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David Douglas Hilcorp Alaska, LLC Sr. GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: (907) 777-8337 E-mail: david.douglas@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal Received By: Date: Date: 03/13/2025 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 DATA TRANSMITTAL Well: PBU NK-41PB1 + PB2 + PB3 PTD: 197-116 API: 50-029-22778-70-00 (NK-41PB1) 50-029-22778-71-00 (NK-41PB2) 50-029-22778-72-00 (NK-41PB3) Definitive Directional Survey Composited Definitive Directional Surveys 10/28/1997 Main Folder Contents: Please include current contact information if different from above. T40209 T40210 T40211 Gavin Gluyas Digitally signed by Gavin Gluyas Date: 2025.03.13 13:40:50 -08'00' .. I q 7- - , I Lp Halliburton Sperry-Sun North Slope Alaska ,. BPXA ( N~K~ NK-41 Survey Report 15 January, 2004 Surface Coordinates: 5980017.63 N, 721841.17 E (70020' 51.5993" N, 148011' 56.1403" W) Grid Coordinate System: NAD27 Alaska State Planes, Zone 4 ( Surface Coordinates relative to Project H Reference: 980017.63 N, 221841.17 E (Grid) Surface Coordinates relative to Structure: 5485.80 S, 5703.00 E (True) Kelly Bushing Elevation: 60. 10ft above Mean Sea Level Kelly Bushing Elevation: 60. 10ft above Project V Reference RECEIV"'E' 'D"" Kelly Bushing Elevation: 60. 10ft above Structure " '. :' ~J\H 1 6 2004 AJækaOiI &: Gas Cons. ComrMn Anchorage - .. SP'E!I'I')j-SU!fl C R,I L L I N, G 5 e RV I c:: e 5 Survey Ref: svy2728 A Halliburton Company ~(ÇA¡N NE~',) ~H~\N 2 6 2004 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (0/100ft) 0.00 0.000 0.000 -60.10 0.00 0.00 N 0.00 E 5980017.63 N 721841.17 E 0.00 40.70 0.000 0.000 -19.40 40.70 0.00 N 0.00 E 5980017.63 N 721841.17 E 0.000 0.00 100.00 0.270 312.900 39.90 100.00 0.10 N 0.10W 5980017.72 N 721841.06E 0.455 0.00 200.00 0.080 60.420 139.90 200.00 0.29 N 0.21 W 5980017.91 N 721840.95 E 0.304 0.06 300.00 0.230 165.550 239,90 300.00 0.13 N 0.10W 5980017.76 N 721841.06 E 0.262 0,02 ( 400.00 0.250 285.220 339.90 400.00 0.01 S 0.26W 5980017.62 N 721840.91 E 0.415 -0.19 500.00 0.190 313.960 439.90 500.00 0.17 N 0.59W 5980017.78 N 721840.57 E 0.124 -0.29 599.00 0.140 102.510 538.90 599.00 0.25 N 0.59W 5980017.87 N 721840.57 E 0.321 -0.22 699.00 0.280 246.750 638.90 699.00 0.13 N 0.70W 5980017.74 N 721840.47 E 0.402 -0.39 799.00 0.140 348.960 738.90 799.00 0.15 N 0.95W 5980017.76 N 721840.22 E 0.338 -0.54 903.00 0.160 90.670 842.90 903.00 0.28 N 0.83W 5980017.88 N 721840.34 E 0.224 -0.37 1000.00 0.220 242,900 939.90 1000.00 0.19 N 0.86W 5980017,79 N 721840.31 E 0,381 -0.45 1101.00 0.260 339.330 1040.90 1101.00 0.32 N 1.11 W 5980017.91 N 721840.05 E 0.355 -0,53 1200.00 0.230 7.880 1139.90 1200,00 0.72 N 1.16 W 5980018.32 N 721839.99 E 0.126 -0.27 1308.00 0.250 4.380 1247.89 1307.99 1.17 N 1.11 W 5980018.77 N 721840.02 E 0,023 0.09 1399.00 0.280 27.010 1338.89 1398.99 1.57 N 1.00W 5980019.17 N 721840.13 E 0.119 0.46 1500.00 0.290 28.710 1439.89 1499.99 2.01 N 0.76W 5980019.62 N 721840.35 E 0.013 0.94 1599.00 0.270 348.180 1538.89 1598.99 2.46 N 0.69W 5980020.07 N 721840.41 E 0.197 1.32 1700.00 0.320 357.940 1639.89 1699.99 2.98 N 0.75W 5980020.58 N 721840.33 E 0.070 1.65 1805.00 0.770 40.760 1744.88 1804.98 3.80 N 0.30W 5980021.42 N 721840.76 E' 0.550 2.56 1904.00 1.820 48.860 1843.86 1903.96 5.34 N 1.32 E 5980023.01 N 721842.33 E 1.074 4.79 2006.00 3.580 43.780 1945.74 2005.84 8.71 N 4.74 E 5980026.4 7 N 721845.65 E 1.740 9.59 2106.00 5.300 39.200 2045.44 2105.54 14.54 N 9.82 E 5980032.45 N 721850.56 E 1.755 17.32 ( 2206.00 6.410 39.830 2144.91 2205.01 22.41 N 16.32 E 5980040.51 N 721856.82 E 1.112 27.49 2306.00 7.800 43.990 2244.14 2304.24 31.58 N 24.61 E 5980049.92 N 721864.83 E 1 .481 39.85 2406.00 8.350 45.170 2343.15 2403.25 41.58 N 34.47 E 5980060.21 N 721874.39 E 0.574 53.89 2506.00 11.050 46.670 2441.71 2501.81 53.27 N 46.59 E 5980072.26 N 721886.16E 2.712 70.72 2606.00 13.470 46.160 2539.43 2599.53 67.92 N 61.96 E 5980087.35 N 721901.10E 2.422 91.93 2706.00 15.300 47.250 2636.29 2696.39 84.94 N 80.06 E 5980104.91 N 721918.68 E 1.850 116.72 2756.00 16.590 48.380 2684.36 2744.46 94.16 N 90.24 E 5980114.42 N 721928.58 E 2.654 130.42 2800.00 17.510 48,620 2726.43 2786,53 102,71 N 99.90 E 5980123.25 N 721937.98 E 2.097 143,26 2850,00 17,930 49.170 2774.06 2834.16 112,72 N 111.37 E 5980133.59 N 721949,15E 0,904 158.41 2900,00 18,690 49.710 2821.52 2881.62 122,93 N 123.30 E 5980144,15 N 721960,78 E 1.557 174,03 2950.00 19.130 51,560 2868.83 2928,93 133.20 N 135,83 E 5980154,79 N 721973.00 E 1 .487 190.10 3000.00 20.350 52.360 2915.89 2975.99 143,61 N 149,13E 5980165,59 N 721985.98 E 2.499 206,80 15 January, 2004 - 11:14 Page 2 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 3050.00 22.140 51.840 2962.49 3022.59 154.74 N 163.42 E 5980177.14 N 721999.94 E 3.600 224.70 3100.00 24.160 49.920 3008.46 3068.56 167.15 N 178.66 E 5980189.99 N 722014.81 E 4.312 244.19 3150.00 25.600 48.740 3053.82 3113.92 180.86 N 194.61 E 5980204.17 N 722030.34 E 3.046 265.11 3200,00 27.010 47.190 3098.64 3158.74 195.70 N 211.06 E 5980219.49 N 722046.35 E 3.137 287.19 3250.00 27.960 46.010 3143.00 3203.10 211.56 N 227.83 E 5980235.84 N 722062.63 E 2.190 310.23 ( 3300.00 29.010 45.490 3186.94 3247.04 228.20 N 244.91 E 5980252.98 N 722079.21 E 2.158 334.05 3350.00 29.710 45.300 3230.52 3290.62 245.41 N 262.36 E 5980270.70 N 722096,15 E 1.412 358.55 3400.00 31.060 45.670 3273.65 3333.75 263.14 N 280.39 E 5980288.96 N 722113.65 E 2.726 383.82 3450.00 32.540 47.270 3316.15 3376.25 281.28 N 299.50 E 5980307.65 N 722132.21 E 3.406 410.13 3500,00 33.820 48.700 3357.99 3418.09 299.59 N 319.83 E 5980326.56 N 722151.99 E 3.000 437.40 3550.00 35.600 49.930 3399.09 3459.19 318,14 N 341.42 E 5980345.74 N 722173.03 E 3.826 465.71 3600.00 37.190 51.110 3439.34 3499.44 337.00 N 364.33 E 5980365.27 N 722195,36 E 3.4 75 495.15 3650.00 38.380 51.420 3478.86 3538.96 356.17 N 388.22 E 5980385.13 N 722218.68 E 2.410 525.49 3700.00 39.920 51.280 3517.63 3577.73 375.89 N 412.87 E 5980405.57 N 722242.74 E 3.085 556.75 3750.00 41.040 50.680 3555.66 3615.76 396.32 N 438.09 E 5980426.75 N 722267.34 E 2.372 588.92 3800.00 42.520 50.120 3592.95 3653.05 417.56 N 463.76 E 5980448.73 N 722292.36 E 3.053 621.98 3850.00 43.760 49.620 3629.43 3689.53 439.59 N 489.90 E 5980471.53 N 722317.84 E 2.573 655.94 3900.00 45.010 49.190 3665.16 3725,26 462.35 N 516.45 E 5980495.07 N 722343.71 E 2.571 690.72 3950.00 46.100 48.990 3700.17 3760.27 485.73 N 543.43 E 5980519.23 N 722369.98 E 2.199 726.24 4000.00 47.240 48.210 3734.48 3794.58 509.78 N 570.71 E 5980544.08 N 722396.54 E 2.547 762.45 4050.00 48.990 47.220 3767.86 3827.96 534.83 N 598.24 E 5980569.93 N 722423.32 E 3.798 799.57 4100.00 50.380 46.430 3800.21 3860.31 560.92 N 626.04 E 5980596.83 N 722450.33 E 3.030 837.62 4150.00 52.030 46.180 3831.54 3891.64 587.84 N 654.22 E 5980624.58 N 722477.70 E 3.323 876.54 ( 4200.00 53.640 46.070 3861.74 3921.84 615.45 N 682.94 E 5980653.03 N 722505.59 E 3.225 916.33 4250.00 55.440 46.060 3890.75 3950.85 643.71 N 712.26 E 5980682.14 N 722534.07 E 3.600 957.01 4300.00 57.170 46.090 3918.49 3978.59 672.57 N 742.23 E 5980711.87 N 722563.16 E 3.460 998.56 4350.00 58.100 46.250 3945.25 4005.35 701.81 N 772.69 E 5980742.01 N 722592.75 E 1.880 1040.74 4400.00 58.460 46.540 3971.54 4031.64 731.15 N 803.49 E 5980772.24 N 722622.66 E 0.873 1083.22 4450.00 59.140 46.700 3997.44 4057.54 760.52 N 834.57 E 5980802.52 N 722652.87 E 1.387 1125.91 4500.00 60.350 46.530 4022.63 4082.73 790.19 N 865.96 E 5980833.10 N 722683.36 E 2.438 1169.03 4550.00 61.990 46.400 4046.74 4106,84 820.36 N 897.71 E 5980864,20 N 722714.21 E 3.288 1212,77 4600.00 63.170 45.980 4069,77 4129,87 851.08 N 929,74 E 5980895,86 N 722745.31 E 2.475 1257.10 4650.00 64.450 45.440 4091.83 4151.93 882.41 N 961,86 E 5980928.13 N 722776.49 E 2,737 1301.92 4700,00 65.850 45.070 4112.85 4172,95 914,35 N 994.08 E 5980961.01 N 722807.75 E 2,879 1347.27 4750.00 66.990 44.660 4132.85 4192,95 946.83 N 1026.40 E 5980994.43 N 722839.10 E 2.401 1393.07 15 January, 2004 - 11:14 Page 3 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastin9s Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 4800.00 68.430 44.390 4151.81 4211.91 979.81 N 1058.84 E 5981028.36 N 722870.55 E 2.923 1439.33 4850.00 69.450 44.080 4169.78 4229.88 1013.24 N 1091.39 E 5981062.74 N 722902.09 E 2.120 1485.98 4900.00 70.540 43.410 4186.88 4246.98 1047.19 N 1123.88 E 5981097.62 N 722933.56 E 2.517 1532.96 4950.00 71.130 43.200 4203.30 4263.40 1081.55 N 1156.27 E 5981132.94 N 722964.92 E 1.245 1580.19 5000.00 70.520 43,290 4219.72 4279.82 1115.96 N 1188.63 E 5981168.28 N 722996.24 E 1.232 1627.42 (' 5100.00 71.210 43.600 4252.50 4312.60 1184.55 N 1253.59 E 5981238.76 N 723059.15 E 0,750 1721.89 5150.00 71.520 43.770 4268.48 4328.58 1218.81 N 1286.32 E 5981273.98 N 723090.85 E 0.699 1769.27 5200.00 70.950 43.790 4284,56 4344.66 1252.99 N 1319.07 E 5981309.12 N 723122.58 E 1.141 1816.61 5250.00 70.610 43,710 4301.02 4361.12 1287.09 N 1351,72E 5981344.17 N 723154.20 E 0.697 1863.82 5300.00 71.030 43.730 4317.45 4377.55 1321.22 N 1384.36 E 5981379.25 N 723185,82 E 0.841 1911,04 5350.00 71.310 43.720 4333.59 4393.69 1355.42 N 1417.07 E 5981414.41 N 723217.50 E 0.560 1958.37 5400.00 71.760 44.040 4349.42 4409.52 1389.61 N 1449.94 E 5981449,55 N 723249.35 E 1.086 2005,79 5450.00 71.870 44.280 4365.03 4425.13 1423.69 N 1483.04 E 5981484.59 N 723281.42 E 0.506 2053.29 5500.00 71.300 44.170 4380.82 4440.92 1457.68 N 1516.13 E 5981519.55 N 723313.48 E 1.159 2100.72 5550.00 71.130 44.190 4396.92 4457.02 1491.63 N 1549.11 E 5981554.46 N 723345.45 E 0.342 2148.05 5600.00 70.910 44.050 4413.18 4473.28 1525.57 N 1582.03 E 5981589.36 N 723377.35 E 0.514 2195.33 5650.00 70.620 43.720 4429.66 4489.76 1559.60 N 1614.76 E 5981624.34 N 723409,05 E 0.851 2242.54 5700.00 70.300 43.460 4446.38 4506.48 1593.73 N 1647.25 E 5981659.42 N 723440.52 E 0.806 2289.66 5750.00 70.320 43.090 4463.23 4523.33 1628.00 N 1679.52 E 5981694.63 N 723471.76 E 0.698 2336.73 5800.00 70.330 42.880 4480.06 4540.16 1662.44 N 1711.62 E 5981730.01 N 723502.83 E 0.396 2383.81 5850.00 70.460 42.440 4496.84 4556.94 1697.08 N 1743.53 E 5981765.58 N 723533.71 E 0.869 2430.91 5900.00 71.720 41.570 4513.04 4573,14 1732.23 N 1775.19 E 5981801.65 N 723564.30 E 3.010 2478.20 5950.00 72.590 40.850 4528.36 4588.46 1768.03 N 1806.54 E 5981838.36 N 723594.59 E 2.215 2525.76 ( 6000.00 72.890 40.940 4543.20 4603.30 1804.13 N 1837.80 E 5981875.37 N 723624.76 E 0.624 2573.46 6050.00 73.340 41.070 4557.72 4617.82 1840.23 N 1869.19 E 5981912.39 N 723655.07 E 0.934 2621.27 6100.00 73.070 41.010 4572.17 4632.27 1876.34 N 1900.62 E 5981949.40 N 723685.42 E 0.552 2669.10 6150.00 73.510 41 .160 4586.55 4646.65 1912.43 N 1932.09 E 5981986.41 N 723715.81 E 0.926 2716.95 6200.00 73.690 41 .300 4600.66 4660.76 1948.51 N 1963.71 E 5982023.41 N 723746.34 E 0.449 2764.88 6250.00 72.910 41.320 4615.03 4675,13 1984.48 N 1995.32 E 5982060.30 N 723776.88 E 1.560 2812.74 6300.00 72.800 41.330 4629.77 4689.87 2020.36 N 2026.87 E 5982097,10 N 723807.35 E 0,221 2860.49 6350.00 72.500 41.380 4644.68 4704.78 2056,18 N 2058.40 E 5982133,84 N 723837.81 E 0.608 2908,19 6400.00 72.120 41 .450 4659.87 4719.97 2091.91 N 2089.91 E 5982170.48 N 723868.25 E 0.772 2955.80 6450.00 72.020 41 .360 4675.27 4735.37 2127.59 N 2121.38E 5982207.08 N 723898.64 E 0.263 3003.34 6500.00 71.700 41.240 4690.83 4750.93 2163.28 N 2152.74 E 5982243.69 N 723928.93 E 0.679 3050.82 6550.00 72.070 41.320 4706.38 4766.48 2199.00 N 2184.09 E 5982280.31 N 723959.21 E 0.755 3098.32 15 January, 2004 - 11:14 Page 4 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northin9s Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (0/100ft) 6600.00 72.280 41.500 4721.68 4781.78 2234.70 N 2215.57 E 5982316.93 N 723989.63 E 0.542 3145.89 6650.00 72.800 41.690 4736.69 4796.79 2270.37 N 2247.24 E 5982353.52 N 724020.22 E 1.101 3193.56 6700.00 72.770 41.900 4751.48 4811.58 2305.97 N 2279.07 E 5982390.05 N 724050.98 E 0.406 3241.31 6750.00 72.340 42.070 4766.47 4826.57 2341.43 N 2310.98 E 5982426.44 N 724081.83 E 0.919 3288.99 6800.00 71.970 42.140 4781.80 4841.90 2376.74 N 2342.89 E 5982462.68 N 724112.68 E 0,752 3336.58 ( 6850.00 70.800 42.340 4797.76 4857.86 2411.82 N 2374.74 E 5982498.69 N 724143.48 E 2.371 3383.95 6900.00 69.970 42.450 4814.54 4874.64 2446.60 N 2406.50 E 5982534.39 N 724174.19 E 1.673 3431.04 6950.00 69.500 42.390 4831.86 4891.96 2481.23 N 2438.14 E 5982569.94 N 724204.79 E 0.947 3477.94 7000.00 69.130 42.430 4849.52 4909.62 2515.77 N 2469.68 E 5982605.40 N 724235.30 E 0.744 3524.71 7050.00 67.870 42.380 4867.85 4927.95 2550.12 N 2501.06 E 5982640.66 N 724265.64 E 2.522 3571.22 7100.00 68.250 42.290 4886.53 4946.63 2584.40 N 2532.29 E 5982675.85 N 724295.85 E 0.778 3617.60 7150.00 69.390 42.360 4904.59 4964.69 2618.87 N 2563.68 E 5982711.24 N 724326.21 E 2.284 3664.21 7200.00 70.200 42.300 4921.86 4981.96 2653.56 N 2595.28 E 5982746.85 N 724356.77 E 1.624 3711.13 7250,00 69.860 42,150 4938.94 4999.04 2688.36 N 2626.86 E 5982782.56 N 724387.30 E 0.736 3758.11 7300.00 70.820 42,110 4955.76 5015.86 2723.28 N 2658.45 E 5982818.40 N 724417.84 E 1.921 3805.18 7350.00 71,140 42.060 4972.05 5032.15 2758.36 N 2690.13 E 5982854.41 N 724448.47 E 0.647 3852.44 7400.00 71.970 42.020 4987,87 5047.97 2793.58 N 2721.89 E 5982890.56 N 724479.18 E 1.662 3899.86 7450.00 72.670 41.990 5003.06 5063.16 2828,98 N 2753.77 E 5982926.89 N 724509.99 E 1.401 3947.49 7500.00 71.930 41.770 5018.26 5078.36 2864.45 N 2785.57 E 5982963.28 N 724540.73 E 1.538 3995.10 7550.00 72.360 42.120 5033.59 5093.69 2899.85 N 2817.38 E 5982999.60 N 724571.48 E 1.088 4042.68 7600.00 72.210 43.060 5048.80 5108.90 2934.91 N 2849.61 E 5983035.60 N 724602.66 E 1.816 4090.31 7650.00 72.090 43.660 5064.13 5124.23 2969.51 N 2882.29 E 5983071.16 N 724634.30 E 1.167 4137.90 7700.00 72.160 44.340 5079.48 5139.58 3003.74 N 2915.34 E 5983106.35 N 724666.32 E 1.302 4185.48 ( 7750.00 71.640 44.710 5095.01 5155.11 3037.63 N 2948.67 E 5983141.21 N 724698.63 E 1.256 4233.00 7800.00 72.110 45.050 5110.57 5170.67 3071.30 N 2982.20 E 5983175.86 N 724731.15 E 1.141 4280.50 7850.00 71.740 45.110 5126.08 5186.18 3104.86 N 3015.86 E 5983210.40 N 724763.80 E 0.749 4328.01 7900.00 71.540 45.290 5141.83 5201.93 3138.30 N 3049.53 E 5983244.82 N 724796.4 7 E 0.526 4375.44 7950.00 71.660 45.600 5157.61 5217.71 3171.59N 3083.34 E 5983279.09 N 724829.28 E 0.635 4422.85 8000.00 71.740 45.790 5173.31 5233.41 3204.74 N 3117.31 E 5983313.24 N 724862.25 E 0.395 4470.28 8050.00 72.300 46.360 5188.75 5248.85 3237.73 N 3151.56E 5983347.23 N 724895.51 E 1.559 4517.79 8100.00 72.000 46.860 5204.07 5264.17 3270.43 N 3186.15E 5983380.94 N 724929.12 E 1.125 4565.30 8150.00 72.450 47.000 5219.34 5279.44 3302.94 N 3220.93 E 5983414.4 7 N 724962.92 E 0.939 4612.82 8200.00 72.580 46.950 5234.36 5294.46 3335.48 N 3255.79 E 5983448.02 N 724996.81 E 0.277 4660.42 8250.00 72.220 46.630 5249.48 5309.58 3368.11 N 3290.53 E 5983481.67 N 725030.56 E 0.944 4707.99 8300.00 72.350 46,780 5264.69 5324.79 3400.78 N 3325.20 E 5983515.34 N 725064.25 E 0.386 4755,54 15 January, 2004 - 11:14 Page 5 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 8350.00 72.430 47.380 5279.82 5339.92 3433.23 N 3360.10 E 5983548.81 N 725098.17 E 1.155 4803.09 8400.00 72.430 47.450 5294.91 5355.01 3465.48 N 3395.19 E 5983582.10 N 725132.30 E 0.133 4850.64 8450.00 71.980 47.260 5310.19 5370.29 3497.74 N 3430,21 E 5983615.37 N 725166.34 E 0.970 4898.13 8500,00 71.770 47.340 5325.75 5385.85 3529.96 N 3465.13 E 5983648.61 N 725200.30 E 0.447 4945.53 8550.00 72.320 47.470 5341.16 5401.26 3562.15 N 3500.15 E 5983681.83 N 725234.34 E 1.127 4992.98 ( 8600.00 72.230 47.670 5356.38 5416.48 3594.29 N 3535.30 E 5983714.99 N 725268.53 E 0.421 5040.48 8650.00 72.860 48.190 5371.38 5431.48 3626.25 N 3570.71 E 5983747.98 N 725302.98 E 1.604 5088.02 8700.00 72.580 48.370 5386.23 5446.33 3658.02 N 3606.34 E 5983780.80 N 725337.66 E 0.657 5135.59 8750.00 72.410 48.450 5401.27 5461.37 3689.67 N 3642.01 E 5983813.49 N 725372.37 E 0.373 5183.08 8800.00 72.540 48.480 5416.33 5476.43 3721.29 N 3677.70 E 5983846.15 N 725407.11 E 0.266 5230.57 8850.00 72.400 48.320 5431.39 5491.49 3752.94 N 3713.35 E 5983878.84 N 725441.81 E 0.414 5278.07 8900.00 72.450 48.150 5446.49 5506.59 3784.69 N 3748.91 E 5983911.63 N 725476.40 E 0.339 5325.56 8950,00 72,080 48.130 5461.72 5521.82 3816.47 N 3784.37 E 5983944.45 N 725510.92 E 0.741 5373.01 9000.00 72.470 48,260 5476.94 5537.04 3848.22 N 3819.88 E 5983977.23 N 725545.46 E 0.818 5420.47 9050.00 72.630 48.41 0 5491.93 5552.03 3879.93 N 3855.51 E 5984009.98 N 725580.14 E 0.429 5467.99 9100.00 72.240 48.350 5507.02 5567.12 3911.59 N 3891 .15 E 5984042.68 N 725614.83 E 0,788 5515.47 9150.00 72.220 48.210 5522.28 5582.38 3943.28 N 3926.68 E 5984075.41 N 725649.41 E 0.270 5562.91 9200.00 72.480 48.410 5537.44 5597.54 3974.96 N 3962.26 E 5984108.14 N 725684.04 E 0,645 5610,38 9250.00 72.500 48.690 5552.49 5612.59 4006.53 N 3998.01 E 5984140.75 N 725718.83 E 0,536 5657.86 9300.00 72.170 48.540 5567.66 5627.76 4038.03 N 4033.75 E 5984173.29 N 725753.63 E 0.719 5705.30 9350.00 71.910 48.300 5583.08 5643.18 4069.59 N 4069.33 E 5984205.89 N 725788.25 E 0.692 5752.68 9400.00 72.030 48.160 5598.55 5658.65 4101.26 N 4104.79 E 5984238.60 N 725822.76 E 0.358 5800.05 9450.00 72.240 48.130 5613.89 5673.99 4133,02 N 4140.24 E 5984271.39 N 725857.25 E 0.424 5847.47 ( 9500.00 72.330 48.190 5629.10 5689.20 4164.79 N 4175.72 E 5984304.20 N 725891.78 E 0.213 5894,94 9550.00 72.770 48.400 5644.10 5704.20 4196.52 N 4211.33 E 5984336.97 N 725926.44 E 0.967 5942.46 9600.00 72.380 48.250 5659.07 5719.17 4228.24 N 4246.96 E 5984369.73 N 725961.11 E 0.831 5989.98 9650.00 72.970 48.080 5673.96 5734.06 4260.08 N 4282.53 E 5984402.61 N 725995.72 E 1.224 6037.54 9700.00 72.950 47.850 5688.61 5748.71 4292.09 N 4318.03 E 5984435.65 N 726030.26 E 0.442 6085.19 9750.00 72.950 47.700 5703.27 5763.37 4324.21 N 4353.43 E 5984468.81 N 726064.69 E 0.287 6132.85 9800.00 73.060 47.810 5717.89 5777.99 4356.36 N 4388.83 E 5984501.99 N 726099.13 E 0.304 6180.53 9850.00 72.540 48.420 5732.67 5792.77 4388.25 N 4424.39 E 5984534.92 N 726133.72 E 1.562 6228.12 9900.00 72.770 48.660 5747.58 5807.68 4419.85 N 4460.15 E 5984567.56 N 726168.54 E 0.649 6275.65 9950,00 72.400 48.760 5762.54 5822.64 4451.33 N 4496,00 E 5984600.09 N 726203.44 E 0.764 6323.15 10000.00 72,310 48.740 5777.70 5837.80 4482.75 N 4531.82 E 5984632.56 N 726238.32 E 0.184 6370,59 10050.00 72.160 48.720 5792.96 5853,06 4514.15N 4567.61 E 5984665.01 N 726273.16 E 0.302 6417.99 15 January, 2004 - 11:14 Page 6 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. 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Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 10100.00 71.940 49.210 5808.36 5868.46 4545.38 N 4603.49 E 5984697,29 N 726308.10 E 1.031 6465.33 10150.00 72.210 49.920 5823.75 5883.85 4576.24 N 4639.70 E 5984729.20 N 726343.38 E 1 .455 6512.62 10200.00 72.270 50.040 5839.00 5899.10 4606.86 N 4676.17 E 5984760.88 N 726378.92 E 0.258 6559.92 10250.00 72.320 50.060 5854.21 5914.31 4637.44 N 4712,68 E 5984792.54 N 726414.52 E 0.107 6607.23 10300.00 72.720 50.200 5869.23 5929.33 4668.01 N 4749.29 E 5984824.18 N 726450.20 E 0.843 6654.58 ( 10350.00 72.360 50.100 5884.23 5944.33 4698.58 N 4785.90 E 5984855.81 N 726485.90 E 0.745 6701.94 10400.00 72.920 50.140 5899.15 5959.25 4729.18 N 4822.53 E 5984887.48 N 726521.60 E 1.123 6749.33 10450.00 72.410 50.150 5914.05 5974.15 4759.76 N 4859.16 E 5984919.14 N 726557.31 E 1.020 6796.72 10500.00 72.460 50.260 5929.14 5989.24 4790.27 N 4895.79 E 5984950.72 N 726593.02 E 0.232 6844.05 10550.00 72.460 50.470 5944.21 6004.31 4820,68 N 4932.51 E 5984982.21 N 726628,82 E 0.400 6891.37 10600.00 72.020 50.430 5959.46 6019.56 4851.00 N 4969.22 E 5985013.60 N 726664.62 E 0.883 6938.62 10650.00 72.430 50.390 5974.72 6034.82 4881.35 N 5005.91 E 5985045.02 N 726700.40 E 0.824 6985.87 10700.00 72.760 50.390 5989.68 6049.78 4911.77 N 5042.67 E 5985076.51 N 726736.24 E 0.660 7033.22 10750.00 72.910 50.490 6004.43 6064.53 4942.19 N 5079.50 E 5985108.01 N 726772.16 E 0.356 7080.63 10800.00 72.980 50.600 6019.10 6079.20 4972.57 N 5116.41 E 5985139.47 N 726808.15 E 0.253 7128.05 10850.00 72.600 50.950 6033.89 6093.99 5002.77 N 5153.41 E 5985170.75 N 726844.24 E 1.012 7175.41 10900.00 72.600 51.180 6048.84 6108.94 5032.76 N 5190.52 E 5985201.82 N 726880.45 E 0.439 7222.69 10950.00 73.370 51.370 6063.47 6123.57 5062.66 N 5227.82 E 5985232.82 N 726916.84 E 1.582 7270.04 11000.00 73.800 51.290 6077.60 6137.70 5092.63 N 5265.27 E 5985263.89 N 726953.39 E 0.874 7317.54 11050.00 73.300 50.470 6091.76 6151.86 5122.89 N 5302.47 E 5985295.23 N 726989.68 E 1.864 7365.08 11100.00 72.900 50.350 6106.30 6166.40 5153.38 N 5339.34 E 5985326.79 N 727025.63 E 0.832 7412.56 11150.00 73.770 50.760 6120.64 6180.74 5183.81 N 5376.33 E 5985358.31 N 727061.70 E 1.909 7460.08 11200.00 74.290 51.340 6134.39 6194.49 5214.03 N 5413.71 E 5985389.62 N 727098.17 E 1.525 7507.71 ( 11250.00 74.400 51.610 6147.89 6207.99 5244.01 N 5451.38 E 5985420.71 N 727134.94 E 0.565 7555.37 11300.00 73.800 51.620 6161.58 6221.68 5273.87 N 5489.07 E 5985451.67 N 727171.73 E 1.200 7602.96 11350.00 73.640 51.880 6175.60 6235.70 5303.59 N 5526.76 E 5985482.49 N 727208.52 E 0.593 7650.44 11400.00 74.530 51.970 6189.31 6249.41 5333.24 N 5564.61 E 5985513.25 N 727245.48 E 1.788 7697.98 11450.00 74.770 52.110 6202.55 6262.65 5362.90 N 5602.63 E 5985544.02 N 727282.60 E 0.551 7745.64 11500.00 75.290 52.130 6215.46 6275.56 5392.56 N 5640.76 E 5985574.79 N 727319.83 E 1.041 7793.38 11550.00 75.140 52.410 6228.22 6288.32 5422.14 N 5678.99 E 5985605.49 N 727357.18 E 0.619 7841.14 11600.00 74.570 52.680 6241.29 6301.39 5451.49 N 5717.30 E 5985635.97 N 727394,60 E 1.254 7888.78 11650.00 74.500 52.830 6254.62 6314.72 5480.66 N 5755.67 E 5985666,25 N 727432.08 E 0,321 7936.32 11700.00 74.280 52.810 6268.07 6328.17 5509.76 N 5794.03 E 5985696.48 N 727469.57 E 0.442 7983.82 11750,00 74.580 52,610 6281.49 6341.59 5538.94 N 5832.35 E 5985726.78 N 727507.01 E 0.713 8031.34 11800.00 73,940 52.1 00 6295.06 6355.16 5568.33 N 5870.46 E 5985757.29 N 727544.23 E 1.613 8078.87 15 January, 2004 - 11:14 Page 7 of 13 DrillQuest 3.03.05.005 Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. 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Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 11850.00 74.240 51.990 6308.76 6368.86 5597.91 N 5908.37 E 5985787.97 N 727581.25 E 0.636 8126.40 11900.00 74.070 52.320 6322.41 6382.51 5627.42 N 5946.36 E 5985818.60 N 727618.35 E 0,720 8173.94 11950.00 73.900 52.370 6336.21 6396.31 5656.78 N 5984.40 E 5985849.07 N 727655.51 E 0.353 8221.40 12000.00 73.980 52.440 6350.04 6410.14 5686.09 N 6022.48 E 5985879.50 N 727692.70 E 0.209 8268.85 12050.00 73.790 52.790 6363.92 6424.02 5715.26 N 6060.64 E 5985909.78 N 727729.98 E 0.772 8316.26 ( 12100.00 73.790 52.470 6377.88 6437.98 5744.40 N 6098.80 E 5985940.04 N 727767.26 E 0.615 8363.64 12150.00 73.710 51.810 6391.87 6451.97 5773.86 N 6136.70 E 5985970.61 N 727804.27 E 1.277 8411.08 12200.00 73.570 51.270 6405.95 6466.05 5803.70 N 6174.27 E 5986001.54 N 727840.94 E 1.073 8458.56 12250.00 74.130 51.070 6419.86 6479.96 5833.81 N 6211.68 E 5986032.75 N 727877.44 E 1.184 8506.14 12300.00 73.860 50.250 6433.65 6493.75 5864.28 N 6248.85 E 5986064.31 N 727913.70 E 1.666 8553.81 12350.00 73.900 50.180 6447.53 6507.63 5895.01 N 6285.76 E 5986096.12 N 727949.68 E 0.156 8601.50 12400.00 73.690 50.240 6461.48 6521.58 5925.74 N 6322.65 E 5986127.93 N 727985.65 E 0.436 8649.17 12450.00 73.240 50.240 6475.71 6535.81 5956.40 N 6359.50 E 5986159.66 N 728021.57 E 0.900 8696.76 12500.00 73.490 50.280 6490.03 6550.13 5987.02 N 6396,34 E 5986191.37 N 728057.49 E 0.506 8744.32 12550.00 72.800 50.380 6504.52 6564.62 6017.57 N 6433.17 E 5986222,99 N 728093.40 E 1.393 8791.81 12600.00 72.510 50.710 6519.43 6579,53 6047.90 N 6470.02 E 5986254.40 N 728129.34 E 0.856 8839.16 12650.00 72.620 51.100 6534.41 6594.51 6077.98 N 6507,05 E 5986285.56 N 728165.45 E 0,776 8886.45 12700.00 72.230 51.210 6549.51 6609.61 6107.88 N 6544.17 E 5986316.54 N 728201.68 E 0,808 8933.67 12750.00 72.220 51.190 6564.77 6624.87 6137.71 N 6581.28 E 5986347.46 N 728237.88 E 0.043 8980.84 12800.00 72.150 51.270 6580.07 6640.17 6167.52 N 6618.39 E 5986378.36 N 728274.10 E 0.207 9027.99 12850.00 71.610 51.150 6595.62 6655.72 6197.29 N 6655.43 E 5986409.21 N 728310.24 E 1.104 9075.06 12900.00 71.870 51.070 6611.29 6671.39 6227.10 N 6692.39 E 5986440,10 N 728346.30 E 0.542 9122.11 12950.00 71.400 50.000 6627.04 6687.14 6257.26 N 6729.02 E 5986471.33 N 728382.03 E 2.238 9169.19 ( 13000.00 71.630 49.380 6642.89 6702.99 6287.94 N 6765.18 E 5986503.07 N 728417.26 E 1.263 9216.32 13050.00 71.710 49.590 6658.62 6718.72 6318.77 N 6801.27 E 5986534.96 N 728452.42 E 0.430 9263.51 13100.00 71.500 49.130 6674.40 6734.50 6349,68 N 6837.27 E 5986566.91 N 728487.49 E 0.969 9310.69 13150.00 71.700 49.090 6690.18 6750.28 6380.73 N 6873.13 E 5986599.01 N 728522.42 E 0.407 9357.89 13200.00 71.340 49.000 6706.03 6766.13 6411.82 N 6908.95 E 5986631.14 N 728557.30 E 0.740 9405.08 13250.00 71.290 49.040 6722.05 6782.15 6442.88 N 6944.71 E 5986663.25 N 728592.12 E 0.125 9452.21 13300.00 71.000 48.850 6738.21 6798.31 6473.95 N 6980.39 E 5986695.37 N 728626.87 E 0.682 9499.30 13350.00 71.690 48.630 6754.20 6814.30 6505.20 N 7016.00 E 5986727.65 N 728661.54 E 1 .442 9546.47 13400.00 71.910 48.500 6769.82 6829.92 6536.63 N 7051.61 E 5986760.13 N 728696.20 E 0.505 9593.77 13450.00 71 .460 48.650 6785.53 6845.63 6568.04 N 7087.20 E 5986792.57 N 728730.85 E 0.944 9641.04 13500.00 71.710 48.740 6801.32 6861.42 6599.35 N 7122.84 E 5986824.93 N 728765.54 E 0,528 9688,27 13550,00 72.130 48.850 6816,84 6876.94 6630.66 N 7158.60 E 5986857.28 N 728800,36 E 0.866 9735.59 15 January, 2004 - 11:14 Page 8 of 13 DrillQuest 3.03.05.005 . Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 13600.00 72.230 48.780 6832.14 6892.24 6662.00 N 7194.42 E 5986889.67 N 728835.24 E 0.240 9782.97 13650.00 72.140 48.860 6847.44 6907.54 6693.35 N 7230.25 E 5986922.06 N 728870.12 E 0.236 9830.36 13700.00 72.280 48.860 6862.71 6922.81 6724.67 N 7266.10 E 5986954.43 N 728905.04 E 0.280 9877.74 13750.00 72.990 49.050 6877.64 6937.74 6756.01 N 7302.09 E 5986986.82 N 728940.08 E 1 .466 9925.24 13800.00 72.600 49.010 6892.43 6952.53 6787.32 N 7338.16 E 5987019.19 N 728975.20 E 0.784 9972.76 ( 13850.00 72.450 48.980 6907.44 6967.54 6818.61 N 7374.15 E 5987051.53 N 729010.25 E 0.305 10020.22 13900.00 72.060 48.950 6922.68 6982.78 6849.88 N 7410.07 E 5987083.85 N 729045.23 E 0.782 10067.62 13950.00 71.730 48.960 6938.22 6998.32 6881.08 N 7445.91 E 5987116.10 N 729080.14 E 0.660 10114.91 14000.00 71.930 49.350 6953.81 7013.91 6912.15 N 7481.85 E 5987148.22 N 729115.14 E 0.842 10162.17 14050.00 72.270 49.760 6969.18 7029.28 6943.02 N 7518,06 E 5987180.15 N 729150.42 E 1.035 10209.4 7 14100.00 72.280 49.720 6984.40 7044.50 6973.80 N 7554.40 E 5987211.99 N 729185.84 E 0.079 10256.80 14150.00 71.970 49.980 6999.75 7059.85 7004.48 N 7590.78 E 5987243.73 N 729221.29 E 0.793 10304.08 14200.00 72.310 50.310 7015.08 7075.18 7034.98 N 7627.31 E 5987275.30 N 729256,90 E 0.926 10351.34 14250.00 72.720 50.550 7030.11 7090.21 7065.36 N 7664.07 E 5987306,75 N 729292.75 E 0.939 10398.66 14300.00 72.210 50.540 7045.17 7105.27 7095.66 N 7700.88 E 5987338.13 N 729328,65 E 1.020 10445.96 14350.00 72.150 50.330 7060.47 7120.57 7125.98 N 7737.58 E 5987369.52 N 729364.43 E 0.417 10493.20 14400.00 71.860 50.420 7075.92 7136.02 7156.30 N 7774.21 E 5987400.92 N 729400.14 E 0.605 10540.40 14450.00 72.030 50.430 7091.41 7151.51 7186.59 N 7810.85 E 5987432.28 N 729435,87 E 0.341 10587.57 14500.00 72.770 50.620 7106.53 7166.63 7216.89 N 7847.64 E 5987463.65 N 729471.75 E 1.524 10634.86 14550.00 72.250 50.740 7121.56 7181.66 7247.11 N 7884.53 E 5987494.95 N 729507.73 E 1.065 10682.15 14600.00 72.320 50.940 7136.77 7196.87 7277.18 N 7921.46 E 5987526.10 N 729543.75 E 0.406 10729.38 14650.00 72.080 50.980 7152.06 7212.16 7307.17 N 7958.44 E 5987557.17 N 729579.83 E 0.486 10776.56 14700.00 71.810 50.960 7167.55 7227.65 7337.11 N 7995.37 E 5987588,19 N 729615.85 E 0.541 10823.68 ( 14750.00 72.070 51.090 7183.06 7243.16 7367.01 N 8032.32 E 5987619.17 N 729651.91 E 0.576 10870.79 14800.00 71.570 51.380 7198.66 7258.76 7396.75 N 8069.36 E 5987649.99 N 729688.05 E 1.142 10917.84 - 14850.00 72.200 51.370 7214.20 7274.30 7426.41 N 8106.49 E 5987680.74 N 729724.28 E 1.260 10964.90 14900.00 72.560 51.750 7229.34 7289.44 7456.04 N 8143.81 E 5987711 .46 N 729760.71 E 1.021 11012.06 14950.00 72.100 51.870 7244.51 7304.61 7485.49 N 8181.26E 5987742.01 N 729797.27 E 0.948 11059.18 15000.00 72.540 51.910 7259.70 7319.80 7514.90 N 8218.74 E 5987772.51 N 729833.87 E 0.883 11106.29 15050,00 72.500 51.810 7274.72 7334.82 7544.35 N 8256.25 E 5987803.06 N 729870.49 E 0.207 11153.46 15100.00 72.180 51.890 7289.89 7349.99 7573.78 N 8293.72 E 5987833.59 N 729907.07 E 0.658 11200.58 15150.00 72.120 52.420 7305.21 7365.31 7602.98 N 8331.30 E 5987863,89 N 729943.77 E 1,016 11247.61 15200.00 72.390 52.510 7320.45 7380.55 7631.99 N 8369.06 E 5987894.00 N 729980.65 E 0.567 11294.63 15250.00 72.970 52.780 7335.34 7395.44 7660.95 N 8407.00 E 5987924.08 N 730017,72 E 1.269 11341,73 15300.00 72.930 52.930 7350.00 7410.10 7689.82 N 8445.11 E 5987954,06 N 730054.96 E 0.298 11388.88 15 January, 2004 - 11:14 Page 9 of 13 DrillQuest 3.03.05.005 . Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastin9s Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (0/100ft) 15350.00 72.570 53.160 7364.82 7424.92 7718.53 N 8483.27 E 5987983.88 N 730092.25 E 0.843 11435.94 15400.00 72.960 53.280 7379.64 7439,74 7747.12 N 8521.51 E 5988013.59 N 730129.63 E 0.813 11482.99 15450.00 72.300 53.450 7394.57 7454.67 7775.59 N 8559.81 E 5988043.19 N 730167.07 E 1.359 11529.98 15500.00 71.960 53.520 7409.91 7470.01 7803.91 N 8598.05 E 5988072.63 N 730204.46 E 0.693 11576.83 15550.00 71.800 53.580 7425.46 7485.56 7832.14 N 8636.28 E 5988101.98 N 730241.83 E 0.340 11623.59 ( 15600.00 71.820 53.360 7441.07 7501.17 7860.42 N 8674.45 E 5988131.37 N 730279.14 E 0.420 11670.36 15650.00 72.390 53.110 7456.43 7516.53 7888.90 N 8712.56 E 5988160.96 N 730316.40 E 1.235 11717.23 15700.00 72.510 52.850 7471.51 7531.61 7917.60 N 8750.63 E 5988190.78 N 730353.60 E 0.551 11764.23 15750.00 72.530 52.760 7486.53 7546.63 7946.43 N 8788.62 E 5988220.72 N 730390.72 E 0.176 11811.27 15800.00 72.300 52.770 7501.63 7561.73 7975.27 N 8826.56 E 5988250.68 N 730427,80 E 0.460 11858.29 15850.00 72.200 52.700 7516.88 7576.98 8004.10 N 8864.46 E 5988280.62 N 730464.82 E 0.240 11905.27 15900.00 72.590 51.860 7532.00 7592.10 8033.26 N 8902,16 E 5988310.88 N 730501.64 E 1.781 11952.35 15950.00 72.480 51.120 7547.00 7607.10 8062.96 N 8939.48 E 5988341.67 N 730538.07 E 1 .429 11999.56 16000.00 72.500 51.220 7562.05 7622.15 8092.86 N 8976.63 E 5988372.65 N 730574.31 E 0.195 12046.80 16050.00 72.510 51.240 7577.08 7637.18 8122.72 N 9013.81 E 5988403.60 N 730610.59 E 0.043 12094.04 16100.00 72.360 51.190 7592.17 7652.27 8152.58 N 9050,96 E 5988434.55 N 730646.85 E 0.315 12141.26 16150.00 72.520 50.970 7607.25 7667.35 8182.53 N 9088.05 E 5988465.58 N 730683.03 E 0.528 12188.49 16200.00 72.070 50.750 7622.46 7682.56 8212.59 N 9125.00 E 5988496.73 N 730719.07 E 0.993 12235.72 16250.00 72.150 50.690 7637.82 7697.92 8242.72 N 9161.83 E 5988527.93 N 730755.00 E 0.197 12282.90 16300.00 71.920 50.530 7653.24 7713.34 8272.90 N 9198.59 E 5988559.19 N 730790.84 E 0.552 12330.08 16350.00 72.200 50.470 7668.64 7728.74 8303.16 N 9235.29 E 5988590.52 N 730826.64 E 0.572 12377.28 16400.00 72.650 50.390 7683.74 7743.84 8333.52 N 9272.03 E 5988621.96 N 730862.4 7 E 0.913 12424.58 16450.00 72.370 50.260 7698.77 7758.87 8363.97 N 9308.74 E 5988653.4 7 N 730898.25 E 0.612 12471.92 ( 16500.00 72.650 50.220 7713.79 7773.89 8394.47 N 9345.40 E 5988685.05 N 730933.99 E 0.565 12519.26 16550.00 72.820 50.040 7728.63 7788.73 8425.08 N 9382.04 E 5988716.73 N 730969.72 E 0.484 12566.67 16600.00 73.020 49.990 7743.32 7803.42 8455.79 N 9418.67 E 5988748.51 N 731005.41 E 0.411 12614.14 16650.00 73.020 49.910 7757.92 7818.02 8486.56 N 9455.27 E 5988780.35 N 731041.09 E 0.153 12661.65 16700.00 72.740 49.810 7772.64 7832.74 8517.36 N 9491.80 E 5988812.22 N 731076.70 E 0.592 12709.12 16750.00 72.840 49.670 7787.43 7847.53 8548.23 N 9528.25 E 5988844.15 N 731112.21 E 0.334 12756,59 16800.00 72.580 49.590 7802.29 7862.39 8579.15 N 9564.62 E 5988876.14 N 731147.65 E 0.542 12804.04 16850.00 72,250 49.770 7817.40 7877.50 8609.99 N 9600.96 E 5988908.04 N 731183.07 E 0.744 12851.41 16900,00 72.330 49.730 7832,61 7892,71 8640.77 N 9637.32 E 5988939.88 N 731218.49 E 0.177 12898.74 16950.00 72.480 50.260 7847.72 7907.82 8671.41 N 9673.82 E 5988971.59 N 731254.08 E 1.054 12946.08 17000.00 72.520 50.260 7862.76 7922.86 8701,89 N 9710.49 E 5989003.14 N 731289.83 E 0.080 12993.42 17050.00 72.920 50.320 7877,61 7937.71 8732.40 N 9747.22 E 5989034.72 N 731325.64 E 0.808 13040.82 15 January, 2004 - 11:14 Page 10 of 13 DrillQuest 3.03.05.005 . Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastin9s Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (0/100ft) 17100.00 72,660 50.340 7892.40 7952.50 8762.88 N 9783.98 E 5989066.28 N 731361.48 E 0.521 13088.22 17150.00 72.720 50.260 7907.28 7967.38 8793.38 N 9820.71 E 5989097.85 N 731397.29 E 0.194 13135.61 17200.00 72.350 50.140 7922.29 7982.39 8823.91 N 9857.35 E 5989129.45 N 731433.01 E 0.775 13182.96 17250.00 72.380 50.160 7937.44 7997.54 8854.44 N 9893.94 E 5989161.05 N 731468.68 E 0.071 13230.27 17300.00 72.400 50.010 7952.56 8012.66 8885.02 N 9930.49 E 5989192.70 N 731504.31 E 0.289 13277.60 ( 17350.00 72.160 50.040 7967.78 8027.88 8915.62 N 9966.99 E 5989224.37 N 731539.88 E 0.483 13324.90 17400.00 72.480 49.980 7982.97 8043.07 8946.23 N 10003.49 E 5989256.05 N 731575.46 E 0.650 13372.22 17450.00 72.110 49.950 7998.17 8058.27 8976.87 N 10039.95 E 5989287.75 N 731611.01 E 0.742 13419.53 17500.00 72.430 49.970 8013.40 8073.50 9007.51 N 10076.42 E 5989319.46 N 731646.54 E 0.641 13466.84 17550,00 71.920 49.950 8028.70 8088.80 9038.13 N 10112.86E 5989351.15 N 731682.06 E 1.021 13514.12 17600.00 72,120 50,010 8044.14 8104.24 9068.71 N 10149.28 E 5989382.79 N 731717.56 E 0.416 13561.36 17650.00 71.760 50.020 8059.64 8119.74 9099.26 N 10185.70 E 5989414.40 N 731753.07 E 0.720 13608.58 17687.10 71.250 49.500 8071.41 8131.51 9121.99 N 10212.56 E 5989437.92 N 731779.24 E 1.912 13643.54 17698.20 71.500 49.300 8074.95 8135.05 9128.83 N 10220.55 E 5989445.00 N 731787.02 E 2.826 13654.00 17781.80 70.860 48.400 8101.92 8162.02 9180.90 N 10280,13 E 5989498.81 N 731845.04 E 1,275 13732.76 17812.30 71.620 47.400 8111.73 8171.83 9200.26 N 10301.56 E 5989518.79 N 731865.88 E 3.981 13761.55 17905.60 73.200 45.900 8139.93 8200.03 9261.32 N 1 0366.22 E 5989581.73 N 731928.71 E 2.284 13850.34 17998.70 74.240 42.400 8166.03 8226.13 9325.43 N 10428.45 E 5989647.66 N 731989.02 E 3.778 13939.68 18092.60 75.930 38.500 8190.21 8250.31 9394.47 N 10487.30 E 5989718.41 N 732045.79 E 4.398 14030.27 18187.30 78.500 38.300 8211.16 8271.26 9466.84 N 10544.66 E 5989792.45 N 732100.98 E 2.722 14122.28 18280.80 78.850 37.900 8229.53 8289.63 9538.98 N 10601.23 E 5989866.23 N 732155.39 E 0.562 14213.57 18375.90 80.800 35.900 8246.33 8306.43 9613.83 N 10657.42 E 5989942.71 N 732209.34 E 2.914 14306.57 18468.70 82.670 33.800 8259.67 8319.77 9689.19 N 10709.89 E 5990019.59 N 732259.56 E 3.012 14397.39 ( 18561.60 84.770 32.000 8269.83 8329.93 9766.72 N 10760.04 E 5990098.57 N 732307.39 E 2.970 14488.20 18654.00 85.230 31.900 8277.88 8337.98 9844.82 N 10808.75 E 5990178.08 N 732353.77 E 0.509 14578.43 18746.00 85.400 32.000 8285.40 8345.50 9922.63 N 10857.27 E 5990257.29 N 732399.97 E 0.214 14668.32 18842.40 84.630 32.200 8293.77 8353.87 10003.98 N 10908.30 E 5990340.12 N 732448.57 E 0.825 14762.51 18936.50 84.740 32.300 8302.49 8362.59 10083.22 N 10958.30 E 5990420.80 N 732496.20 E 0.158 14854.46 19029.50 84.540 32.500 8311 .18 8371.28 10161.40N 11007.91 E 5990500.41 N 732543.48 E 0.303 14945.37 19120.70 84.420 32.900 8319.95 8380.05 10237.79 N 11056.95 E 5990578,22 N 732590.24 E 0.456 15034.58 19215.90 84,770 32,100 8328.92 8389.02 10317.72 N 11107.88 E 5990659.63 N 732638.77 E 0.914 15127.67 19308.80 84.710 32.200 8337.43 8397.53 10396.05 N 11157.10 E 5990739.37 N 732685.66 E 0.125 15218.42 19402,20 85.140 33.000 8345.70 8405.80 10474.42 N' 11207.23 E 5990819.20 N 732733.44 E 0.969 15309.82 19498.30 85.540 32,600 8353.50 8413.60 10554,93 N 11259,11 E 5990901.21 N 732782.92 E 0.588 15403.98 19592.10 85.890 33.900 8360.51 8420.61 10633.15 N 11310.40E 5990980.92 N 732831,87 E 1.432 15496,07 15 January, 2004 - 11:14 Page 11 of 13 DrillQuest 3.03.05.005 . Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (°/1 OOft) 19685.30 85.880 32.600 8367.20 8427.30 10710.89 N 11361.37 E 5991060.13 N 732880.51 E 1.391 15587,59 19776.96 85.170 30.800 8374.35 8434.45 10788.64 N 11409.38 E 5991139.26 N 732926.21 E 2.105 15677.09 19873.30 85.140 31 .200 8382.49 8442.59 10870.92 N 11458.82 E 5991222.97 N 732973.19 E 0.415 15770.87 19966.30 85.280 31.600 8390.26 8450.36 10950.02 N 11507.11 E 5991303.47 N 733019.11 E 0.454 15861.54 20059.80 84.820 31.600 8398.32 8458.42 11029.36 N 11555.92 E 5991384.22 N 733065.55 E 0.492 15952.74 ( 20157.73 84.800 30.400 8407.18 8467.28 11112.96 N 11606.15 E 5991469.27 N 733113.29 E 1.221 16048.01 20250.20 84.880 30.600 8415.50 8475.60 11192.31 N 11652.89 E 5991549.97 N 733157.66 E 0.232 16137.80 20343.00 84.820 29.300 8423.83 8483.93 11272.39 N 11699.03 E 5991631.38 N 733201.41 E 1.397 16227.71 20437.70 85,260 30.800 8432.02 8492.12 11354.05 N 11746.28 E 5991714.40 N 733246.21 E 1.645 16319.53 20531.90 85.600 31.1 00 8439.52 8499.62 11434.59 N 11794.57 E 5991796.33 N 733292.10 E 0.481 16411.24 20625.00 85.830 31.100 8446.48 8506.58 11514.08N 11842.52 E 5991877.21 N 733337.68 E 0.247 16501.97 20723.60 85.830 30.800 8453.65 8513.75 11598.42 N 11893.10 E 5991963.01 N 733385.74 E 0.303 16598.02 20818.70 84.650 29.500 8461.54 8521.64 11680.36 N 11940.70 E 5992046,33 N 733430.89 E 1.843 16690.29 20910.60 84,880 30.300 8469.93 8530.03 11759.70N 11986.32 E 5992126.98 N 733474.14 E 0.902 16779.30 20996.70 85.080 30.900 8477.46 8537.56 11833.52 N 12029,98 E 5992202.06 N 733515.60 E 0.732 16862.95 21089.70 83.220 30.060 8486.94 8547.04 11913.25N 12076.90 E 5992283.14 N 733560.14 E 2.193 16953.14 21181.80 80.540 28.300 8499.95 8560.05 11992,84 N 12121.35 E 5992364.01 N 733602.22 E 3.471 17041.54 21275.10 78.590 27.700 8516.85 8576.95 12073.85 N 12164.43 E 5992446,27 N 733642.88 E 2.184 17130.02 21371.00 76.800 28.800 8537.28 8597.38 12156.39 N 12208.77 E 5992530.08 N 733684.76 E 2.177 17220.48 21463.50 73.560 28.000 8560.94 8621.04 12235.04 N 12251.30 E 5992609.95 N 733724.94 E 3.601 17306.87 21558.80 71.650 27.1 00 8589.43 8649.53 12315.66 N 12293.37 E 5992691.78 N 733764.60 E 2.197 17394.37 21653.30 69.740 27.600 8620.67 8680.77 12394.87 N 12334.34 E 5992772.17 N 733803.21 E 2.082 17480.10 21745.40 66.350 27.1 00 8655.10 8715.20 12470.73 N 12373.58 E 5992849.16 N 733840.19 E 3.715 17562.21 ( 21840.50 63.350 27.000 8695.51 8755.61 12547.39 N 12412.72 E 5992926.94 N 733877.05 E 3.156 17644.83 21935.90 59.350 26.600 8741.24 8801.34 12622.10 N 12450.47 E 5993002.74 N 733912.56 E 4.209 17725.07 22026.60 55.290 26.800 8790.21 8850.31 12690.29 N 12484.76 E 5993071.91 N 733944.82 E 4.480 17798.20 22122.40 53.720 26.400 8845.83 8905.93 12760.03 N 12519.69 E 5993142.65 N 733977.67 E 1.674 17872.89 22216.20 51.490 24.800 8902.79 8962.89 12827.22 N 12551.90 E 5993210.77 N 734007.88 E 2.736 17943.86 22311.20 49.850 24.400 8963.00 9023.10 12894.03 N 12582.49 E 5993278.45 N 734036.48 E 1.757 18013.44 22403.1 0 48.300 23.800 9023.20 9083.30 12957.41 N 12610.84 E 5993342.64 N 734062.94 E 1.757 18079.00 22499,10 46.610 23.500 9088.11 9148.21 13022.19 N 12639.22 E 5993408.24 N 734089.39 E 1.775 18145.59 22593.90 44,890 22.800 9154,26 9214.36 13084.62 N 12665.92 E 5993471.43 N 734114.23 E 1.890 18209.32 22689,00 42.640 22.400 9222,93 9283.03 13145.35 N 12691.20 E 5993532.88 N 734137.70 E 2.384 18270.84 22784,00 39,720 22,500 9294.43 9354,53 13203.15 N 12715,08 E 5993591,37 N 734159.86 E 3.074 18329.27 22880.30 37.600 20.800 9369.62 9429.72 13259,05 N 12737.29 E 5993647,90 N 734180.41 E 2.462 18385,17 15 January, 2004 - 11:14 Page 12 of 13 DrillQuest 3.03.05.005 , Halliburton Sperry-Sun Survey Report for NIAKUK - NK-41 BPXA North Slope Alaska Measured sub-Sea Vertical Local Coordinates Global Coordinates Dogleg Vertical Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings Rate Section Comment (ft) (ft) (ft) (ft) (ft) (ft) (ft) (0/1 OOft) 22973.20 35.500 20.400 9444.25 9504.35 13310.83 N 12756.76 E 5993700.23 N 734198.34 E 2.275 18436.19 23069.50 33.830 20.600 9523.45 9583.55 13362.13 N 12775.94 E 5993752.08 N 734215.99 E 1.738 18486.66 23742.00 21.580 20.600 10117.72 10177.82 13654.24 N 12885.74 E 5994047.31 N 734317.09 E 1.822 18774.47 All data is in Feet (US Survey) unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well. Northings and Eastings are relative to Well. ( Global Northings and Eastings are relative to NAD27 Alaska State Planes, Zone 4. The Dogleg Severity is in Degrees per 100 feet (US Survey). Vertical Section is from Well and calculated along an Azimuth of 43.341° (True). Magnetic Declination at Surface is 28.103° (28-Jan-99) Based upon Minimum Curvature type calculations, at a Measured Depth of 23742.00ft., The Bottom Hole Displacement is 18774.47ft., in the Direction of 43.3410 (True). ( 15 January, 2004 - 11:14 Page 13 of 13 DrillQuest 3.03.05.005 AOGCC Geological Materials Inventory __ PERMIT 9 7-116 ARCO Log Data Sent Recieved 8354 ~CHLUM GR/CDT/ADN 4/14/98 4/14/98 8355 ~*~-SCHLUM GR/CDT/ADN PB1 4/14/98 4/14/98 WELL DEFIN SRVY /~O 40.70-20613. PB1 8/13/98 8/13/98 WELL DEFIN SRVY '~CO 40.70-21225. PB2 8/13/98 8/13/98 WELL DEF1N SRVY /'~O 40.70-22093. PB3 8/13/98 8/13/98 WELL DEFIN SRVY ?~O 40.70-23742. 8/13/98 8/13/98 ADN ~'~100-2130~ ~0 ~ ;L. 4/26/98 4/29/98 ADN-MD j20~-22093. PB3 12/17/98 12/17/98 ADN-MD ~,t~ 00 -23600 4/14/98 4/14/98 ADN-MD ~/1~7500-20500 PB1 4/14/98 4/14/98 ADN-TVD !,/I~L 8100-9500 PB~ 4/14/98 4/14/98 ADN-TVD t,~8~00-9063 PB 1 12/17/98 12/17/98 ADN-TVD ~....:8~6'0-9204 PB2 12/17/98 12/17/98 ADN-TVD ,,--ff650-8866.4 PB3 12/17/98 12/17/98 ADN-TVD ,,/BL 8300-9200 PB2 4/14/98 4/14/98 CDR t/18150-21200 ~ ~>-3 _ ~--- 4/26/98 4/29/98 CDR-MD ,~200-20600 PB 1 4/14/98 4/14/98 CDR-MD 7~650-22093 PB3 12/17/98 12/17/98 CDR-MD ~2~0-23700 4/14/98 4/14/98 CDR-TVD 0SCL 8300-9200 PB2 4/14/98 4/14/98 CDR-TVD ~ 200-9500 PB1 4/14/98 4/14/98 CDR-TVD ~ 8100-8850 PB3 4/14/98 4/14/98 CDR-TVD ~-,¢4~ 00-8866 PB3 12/17/98 12/17/98 CDR-TVD /~..00-9204 PB2 12/17/98 12/17/98 CDR-TVD ~-200-9063 PB1 12/17/98 12/17/98 CTTNGS DESCP .~HAND DRWN 22000-23742 "~ 12/17/98 12/17/98 CTTNGS DESCP '~AND DRWN 19493.3-20613 PB1 ~/ 12/17/98 12/17/98 CTTNGS DESCP ~"I-IAND DRWN 1900-21226 PB2 ~ 12/17/98 12/17/98 CTTNGS DESCP · HAND DRWN 21500-22093 PB3 '~ 12/17/98 12/17/98 Thursday, September 23, 1999 BOX Page 1 of 2 Was the well cored? Are tests required? Well is in compliance Comments DRY CTTNGS #980 20000-23742 PB1-PB3 ~l'0-407 Completion Date ~/ ' / Are dry ditch samples required? ~ yes yes ~ no yes ~_~o Ifiitial 10/7/97 10/7/97 Daily well ops ... ,, ? , _._' no And received? ~_~_~yes no Analysis _description recieved? ..... yes Received~? no Thursday, September 23, 1999 Page 2 of 2 State of aska · . .kLASF~0IL & GAS CC '~VATION COMMISSION File: ~ot.s casin? si=e, w~., Sf= C3q: Long C~g: Liner: Perf i"--:a---rais - :=ps: Review the well file, and-comment on p!uq~i=g, well head sUatus, and location clearance - provide loc. clear, code. .=lugs: ~i! head =u= of~: . -- Marker Lace:ion Clear=c.: ~ 0 - Conc!usions: ~~ Code BP EXPLORATION BP Exploration (A,a~FIDENTIAL 900 East Benson Boulevard Re, Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 December17th, 1998 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Dear AOGCC Representative, Per the terms of the Tract 75 agreement enclosed are the following bluelines, vellums and Lithology Logs for Niakuk #41. Log Date /ADN TVD NK-41 PB#1 (Vellum) - ADN TVD NK-41 PB#2 (Vellum) CDR TVD NK-41 PB#3 (Vellum) --CDR TVD NK-41 PB#1 (Vellum) - CDR TVD NK-41 PB ~ (Vellum) CDR MD NK-41 PB #3,(.Blueline & ~ellum) ADN TVD NK-41 PB #3,(.Blueline & ~/ellum) ADN MD NK-41 PB ~J.(~lueline &'Vellum) Cuttings Description Logs NK-41A.- Cuttings Description Logs NK-41 Cuttings Description Logs NK-41 PB#1 Cuttings Description Logs NK-41 PB#2 Cuttings Description Logs NK-41 PB#3 6/30/97-7/29/97 8/3/97-8/12/97 8/22/97-9/1/97 6130/97-7/29/97 8/3/97-8/t 2/97 8/22/97-9/1/97 8/22/97-9/1/97 8/22/97-9/1/97 10/6/9 -'~ 9/8/97 b__/" 8/11/97 8/31/97 Please contact me at 564-5126 if you have any questions. [-~incerely,. ~ ~ David Boyer, Sr. Geologist , Central North Slope - Greater Regional Opportunities MS Enclosures RE: ,E!VED DEC :7 ~998 Please sign below and return to Marian Sloan, BPX, Mail Stop MB9-4 for RE: NK-41 logs Subject: RE: NK-41 logs Date: Thu, 10 Dec 1998 19:17:30 -0500 From: "Sloan, Marian (NANA)" <SloanM@bp.com> To: '"Howard Okland'" <howard_okland@admin.state.ak. us> CC: "Douglas, David W (CTG)" <DouglaDW@BP.com> Hallo Howard! Sorry it has taken so long to get back to you regarding your "shopping list"...it has been one of those weeks! We are having copies made for you so it may take a week or so to get you what you are looking for. We did not get Final TVD logs, only the field copies from the Slope and evidently did not receive enough copies at the time. Sorry for the inconvenience. There was not a mud log run on this well. I will get the remainder of your list over to you ASAP. Marian Sloan BP Exploration Technical Assistant PBU Greater Regional Opportunities (907) 564-5127 E-Mail sloanm@bp.com From: Howard Okland [SMTP : howard okland@admin, s ta re. ak. us] Sent: Friday, December 04, 1998 10:25 AM To: sloanm~bp, com; dougladw~bp, com Subject: NK-41 logs Marian, I have a "shopping list" of logs from NK-41 that were not sent to us. I have talked with Dave Douglas and he asked me to email the both of you so we don't loose anything in a verbal request. Sepias ADN-TVD PB #1 ADN-TVD PB #2 CDR-TVD PB #1 CDR-TVD PB #2 CDR- TVD PB #3 Blue Lines And Sepias CDR-~iD PB #3 ADN-TVD PB #3 (maybe not run) t/~'¢1 ~t~/ 'J/r//J/?~?, ., ADN-MD PB #3 (maybe not run) The only other thing that is missing is mud lo (It was marked as required on the Permit.) There may not have been mudloggers on the well, so that's that. I'll be calling Steve Shultz ~ f~.~ (, <, ~.-~ about the mud log. Tnx for your help. Howard howard okland@admin, state, ak. us !),,/, >/.: !, 12/14/98 9:47 AM PERMIT 97-116 97-116 ADN-MD 97-116 CDR-MD 97-116 ADN-MD 97-116 CDR-MD 97-116 ADN-TVD 97-116 ADN-TVD 97-116 CDR-TVD 97-116 CDR-TVD 97-116 8354 97-116 8355 97-116 WELL DEFIN SRVY 97-116 WELL DEFIN SRVY 97-116 WELL DEFIN SRVY 97-116 WELL DEFIN SRVY AOGCC Individual Well Geological Materials Inventory DATA T DATA PLUS ........ DRY CTTNGS #980 ~'~0000-23742 %PB1-PB3 ~/~0900-23600 ~200-23700 ~17500-20500 PB1 m ~.00-20600 PB1 · ~L. BL 8100-9800 PB! ~ BL 8300-9200 PB2 UI~-- BL 200-9500 PB1 L/BL 8300-9200 PB2 ~L 8100-8880 P~3 ~sczn~ S~/CnT/~ ~SCZ~ S~/C~T/~ ~ ~CO 40.70-23742. ~mco ~0.~0-~0~. ~B~ ~mco ~0.70-~. ~B~ ~mCO ~0.70-~0~. ~ Page: 1 Date: 11/25/98 RUN RECVD 10/07/97 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/14/98 FINAL 04/29/98 FINAL 04/29/98 i 04/14/98 1 04/14/98 08/13/98 08/13/98 08/13/98 08/13/98 DAILY WELL OPS R a/~i~/~ TO f/?~/~/ Are dry ditch samples required? ~-no And received? Was the well cored? yes ~~nalysis & description received? Are well tests required? yes ~ Received? Well is in compliance Initial COMMENTS ,6_ ~( [-~ · . ~< Oi;' .... BP EXPLORATION BP Exploration fAlaska,) Inc. 900 East Benson Boulevard Re. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 April 26th, 1998 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Dear AOGCC Representative, Per the terms of the Tract 75 agreement enclosed are the following bluelines and sepias for Niakuk #41 PB #2. Log Date ADN Final 8/3/97-8/12/97 CDR Final 8/3/97-8/12/97 Please contact me at 564-5126 if you have any questions. Sincerely, '~ ~ ~ ,", .~. David Boyer, Sr. Geologist Greater Point Mclntyre Area MS Enclosures Please sign below and return to Marian Sloan, BPX, Mail Stop MB9-4 for reciept of transmittal. BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 April 14th, 1998 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Dear AOGCC Representative, Per the terms o~ the Tract 75 agreement enclosed are t~e ~ollowi~ ~nd ta~es for Nia~u~ ~4~. Log Date NK-41 PB#2 TVD ADN Field NK-41 PB#1 TVD ADN Field NK-41 PB #2 TVD CDR Field NK-41 PB #3 TVD CDR Field NK-41 PB#1 TVD CDR Field 8/3/97-8/12/97 6/30/97-7/29/97 8/3/97-8/12/97 8/22/97-9/1/97 6/30/97-7/29/97._~ Please contact me at 564-5126 if you have any questions. S~incerel.y,~._ . _ r~O Gg,./-rb 'O'avid Boyer, Sr.~Geologist ~,~, , 'C~. '~~ ,~ m,-~, ~, C~¢~'v~ Greater Point Mclntyre Area ~ Enclosures Please sign below and return to Marian Sloan, BPX, Mail Stop MB9-4 for BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 April 14th, 1998 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Dear AOGCC Representative, Per the terms of the Tract 75 agreement enclosed are the following bluelines, sepias and tapes for Niakuk #41A and 41. Log Date NK-41A Gyro survey NK-41A GR Collar Log , NK-41 CDR Final ' NK-41 ADN Final · NK-41 PB#1 CDR Final NK-41 PB#1 ADN Final, 10/28/97 2/1/98 6/30/97-9/10/97 6/30/97-9/10/97 6/30/97-7/29/97 6/30/97-7/29/97 Please contact me at 564-5126 if you have any questions. Sincerely, David Boyer, Sr.(~e~ist "--"~ ~~' Greater Point Mclntyre Area MS Enclosures Please sign below and return to Marian Sloan, BPX, Mail Stop MB9-4 for rec~a?t of trial. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR REOOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska)Inc. 97-116 3. Address 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-22778 4. Location of well at surface 9. Unit or Lease Name 1474' NSL, 717' WEb, SEC. 36, T12N, R15E, UM,.:~~ ~.._____. Niakuk At top of productive interval j~lC""a;~~;~ 10. Well Number 4320' NSL, 1979' EWL, SEC. 21, T12N, R16E, UM .'~ NK-41 At total depth 11. Field and Pool 4557' NSL, 2069' EWL, SEC. 21, T12N, R16E, UM .. ~. H.(,_~Z~ Niakuk Oil Pool 5. Elevation in feet (indicate KB, DF, etc.) ]6. Lease Designation and Seri .~'fq'¢. KBE = 60.2'I ADb312827 12. Date Spudded J13. Date T.D. Re c d 114. Date Co~p., Susp., or Aband.ll5. Water depth, if offshore 16. No. of Completions 7/1/97t 9/8/9~ ~I 9/ll/9~abandoned~ I N/AMSL One 17. Total Depth (MD+TVD)I18. Plug Back Depth (MD+-i-VD)I19. Directional Survey 120. Depth where SSSV set 121. Thickness of Permafrost 23742 10178 FTI 17200 7982 FTI []Yes ~lNo N/A MD 1800' (Approx.) 22. Type Electric or Other Logs Run MWD, Gyro, LWS/DIR/FE/DD, CDR, ADN 23. CASING~ LINER AND CEMENTING RECORD CASING SE%rING DEPTH HOLE SIZE WT. PER FT. GRADE TOP BO~-I-OM SIZE CEMENTING RECORD AMOUNT PULLED 20" 94# H-40 43' 115' 30" 260 sx Arctic Set (Approx.) 13-3/8" 68# L-80 41' 7041' 16" ~_038 sx PF 'E', 54 sx PF 'C', 1190 sx Crass 'G' 9-5/8" 47# L-80 38' 17661' 12-1/4" 742 sx Class 'G' ,,, 24. Perforations open to Production (MD+TVD of Top and 25. TUBING RECORD Bottom and interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) None None MD TVD MD TVD 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED See Attachment "A" 27. PRODUCTION TEST Date First Production I Method of Operation (Flowing, gas lift, etc.) N/AI N/A Date of ]:est Hours Tested PRODUCTION FOR OIL-BBb GAS-MCF WATER-BBb CHOKE SIZE IGAS-OIL RATIO TEST PERIOD I Flow Tubing Casing Pressure CALCULATED OIL-BBb GAS-MCF WATER-BBb OIL GRAVITY-APl (CORR) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. E Form 10-407 Rev. 07-01-80 'Submit In Duplicate 29. Geologic Markers 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids Marker Name Depth Depth recovered and gravity, GOR, and time of each phase. Top Tuffs 22535' 9774' Base Tuffs 22604' 9811' i Top HRZ 22944' 9906' 'Top Kuparuk 23198' 9983' Top Kingak 23480' 10061' 31. List of Attachments Summary of Daily Drilling Reports, Survey ~'2. I ~ereby certify that the foregoing is true and correct to the best of my knowledge Signed ~//~ '-¢,.~~~ . Dan Stoltz ~ ~ ~f',r~...- Title Drilling Superintendent Date NK-41 97-116 Prepared By Name/Number: Carol Withey, 564-4114 Well Number Permit No. / Approval No. INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). ITEM 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 WELL NAME: NK-41 Attachment "A" for Section #26 of Form 10-407 Section #26 Acid, Fracture, Cement Squeeze, Etc. Depth Interval (MD) ............... 19200'-20500' 18045'-19200' 19685' - 21068' 18280'-19685' 17603' - 18280' 21726' - 22093' 22540' - 23742' 17200'-18800' Amount & Kind of Material Used ........................ Kick off Plug #1, 194 bbls 'G' Kick off Plug #2, 97 bbls 'G' Abandonment Plug #1,138 bbls 'G' :Abandonment Plug #2, 123 bbls 'G' Abandonment Plug #3, 76 bbls 'G' Kick off Plug, 32 bbls 'G' Abandonment Plug, 106 bbls 'G' Abandonment Plug, 129 bbls 'G' Operator ARCO Performance Enquiry Report Date 22:27, 04 Aug 98 Page The analysis is from - 04:30, 09 Jul 97 - to - 14:00, 23 Aug 97 Programs in Result Table: NK-41 Drill and Complete Well Type NK-41 Event NK-41 Event NK-41 Event Time From Time To Duration Description E.M.W.(equivalent mud weight) 04:30, 09 Jul 97 04:30, 09 Jul 97 0 hr 0 min Obtained leak off 14.3 03:30, 24 Jul 97 03:30, 24 Jul 97 0 hr 0 min Obtained required level of integrity 17.8 14:00, 23 Aug 97 14:00, 23 Aug 97 0 hr 0 min Obtained required level of integrity 14.0 Hole Size MDR 12-1/4 8-1/2 8-1/2 Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 1 05 August 98 Date/Time 25 Jun 97 26 Jun 97 27 Jun 97 28 Jun 97 29 Jun 97 30 Jun 97 01 Jul 97 02 Jul 97 03 Jul 97 04 Jul 97 05 Jul 97 06 Jul 97 16:00-00:30 00:30-06:00 06:00-09:00 09:00-11:00 11:00-06:00 06:00-06:00 06:00-06:00 06:00-06:00 06:00-10:00 10:00-10:30 10:30-20:00 20:00-22:30 22:30-23:00 23:00-23:30 23:30-00:00 00:00-00:30 00:30-01:00 01:00-02:00 02:00-06:00 06:00-01:00 01:00-01:30 01:30-03:00 03:00-04:00 04:00-05:00 05:00-05:30 05:30-06:00 06:00-06:30 06:30-13:30 13:30-14:00 14:00-15:00 15:00-06:00 06:00-14:00 14:00-15:30 15:30-19:00 19:00-20:00 20:00-21:00 21:00-06:00 06:00-00:00 00:00-00:30 00:30-02:30 02:30-05:30 05:30-06:00 06:00-07:00 07:00-10:30 10:30-14:00 14:00-16:30 16:30-18:30 18:30-23:30 23:30-00:30 00:30-06:00 06:00-07:00 07:00-07:30 07:30-08:00 08:00-10:30 Duration 8-1/2 hr 5-1/2 hr 3 hr 2 hr 19hr 24 hr 24 hr 24 hr 4 hr 1/2 hr 9-1/2 hr 2-1/2 hr 1/2 hr 1/2 hr 1/2 hr 1/2 hr 1/2 hr 1 hr 4 hr 19 hr 1/2 hr 1-1/2 hr 1 hr lhr 1/2 hr 1/2 hr 1/2 hr 7hr 1/2 hr lhr 15hr 8hr 1-1/2 hr 3-1/2 hr lhr lhr 9 hr 18hr 1/2 hr 2 hr 3hr 1/2 hr 1 hr 3-1/2 hr 3-1/2 hr 2-1/2 hr 2 hr 5 hr 1 hr 5-1/2 hr 1 hr 1/2 hr 1/2 hr 2-1/2 hr Activity Rig moved 100.00 % Installed Divertor Installed Divertor (cont...) Racked back drill pipe Rig waited: Orders Rig waited: Orders (cont...) Rig waited: Orders (cont...) Rig waited: Orders (cont...) Rig waited: Orders (cont...) Rigged up Drillstring handling equipment Racked back drill pipe Made up BI-IA no. 1 Tested Divertor Rigged up Survey wireline unit Repaired Top drive Drilled to 180.0 ft Cleared Flowline Serviced Mud shakers Drilled to 460.0 ft Drilled to 460.0 ft (cont...) Circulated at 2328.0 ft Pulled out of hole to 215.0 ft Pulled BHA Made up BHA no. 2 Serviced Top drive R.I.H. to 1100.0 ft R.I.H. to 2328.0 ft (cont...) Drilled to 3168.0 ft Pulled out of hole to 2938.0 ft Drilled to 2948.0 ft Drilled to 4481.0 ft Drilled to 5137.0 fl (cont...) Circulated at 5137.0 ft Pumped out of hole to 2300.0 ft R.I.H. to 5137.0 ft Rigged up Centrifuge Drilled to 5855.0 fl Drilled to 7055.0 fl (cont...) Took MWD survey at 6977.0 ft Circulated at 7055.0 ft Pulled out of hole to 3220.0 ft R.I.H. to 4325.0 ft R.I.H. to 7055.0 ft (cont...) Circulated at 7055.0 ft Pulled out of hole to 215.0 ft Pulled BHA Rigged up Casing handling equipment Ran Casing to 2500.0 ft (13-3/8in OD) Circulated at 2500.0 ft Ran Casing to 13-3/8in (6840.0 ft OD) Ran Casing to 7041.0 ft (13-3/8in OD) (cont...) Rigged down Casing handling equipment Rigged up Handling equipment Circulated at 7041.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 2 05 August 98 Date/Time 07 Jul 97 08 Jul 97 09 Jul 97 10 Jul 97 11 Jul 97 10:30-12:30 12:30-14:00 14:00-14:15 14:15-15:00 15:00-16:00 16:00-16:30 16:30-19:00 19:00-23:00 23:00-00:00 00:00-06:00 06:00-12:00 12:00-18:00 18:00-01:00 01:00-01:30 01:30-03:00 03:00-06:00 06:00-07:00 07:00-08:00 08:00-09:00 09:00-14:00 14:00-14:30 14:30-16:00 16:00-17:30 17:30-19:30 19:30-20:00 20:00-21:00 21:00-22:00 22:00-22:30 22:30-02:00 02:00-02:30 02:30-03:30 03:30-04:30 04:30-06:00 06:00-10:00 10:00-10:30 10:30-12:00 12:00-13:00 13:00-23:00 23:00-00:00 00:00-06:00 06:00-06:01 06:01-07:00 07:00-11:00 11:00-12:00 12:00-14:00 14:00-19:00 19:00-06:00 06:00-07:00 07:00-07:30 07:30-11:30 11:30-13:30 13:30-17:00 17:00-17:30 17:30-18:30 Duration 2 hr 1-1/2 hr 1/4 hr 3/4 hr 1 hr 1/2 hr 2-1/2 hr 4 hr 1 hr 6 hr 6 hr 6 hr 7 hr 1/2 hr 1-1/2 hr 3 hr lhr 1 hr 1 hr 5 hr 1/2 hr 1-1/2 hr 1-1/2 hr 2hr 1/2 hr lhr lhr 1/2 hr 3-1/2 hr 1/2 hr lhr 1 hr 1-1/2 hr 4hr 1/2 hr 1-1/2 hr lhr 10hr lhr 6hr 0 hr 3/4 hr 4 hr 1 hr 2 hr 5 hr llhr 1 hr 1/2 hr 4 hr 2 hr 3-1/2 hr 1/2 hr 1 hr Activity Mixed and pumped slurry - 569.000 bbl Displaced slurry - 1032.000 bbl Functioned DV collar Circulated at 1991.0 ft Mixed and pumped slurry - 472.000 bbl Displaced slurry - 298.000 bbl Cleared Bell nipple Rigged down Divertor Installed Casing head Rigged up Well control Rigged up Well control (cont...) Tested Well control Repaired Well control Installed Well control Rigged up Handling equipment Made up BHA no. 3 R.I.H. to 1103.0 ft Singled in drill pipe to 1986.0 ft Drilled installed equipment - DV collar Singled in drill pipe to 6937.0 ft Circulated at 6937.0 ft Tested Casing - Via annulus and string Serviced Block line Rigged up HCR valve Rigged up Packer assembly Tested HCR valve Rigged down Well control R.I.H. to 6958.0 ft Drilled cement to 7055.0 ft Drilled to 7085.0 ft Circulated at 7085.0 ft Performed formation integrity test Drilled to 7133.0 ft Drilled to 7403.0 ft (cont...) Took MWD survey at 7403.0 ft Drilled to 7567.0 ft Held safety meeting Drilled to 8413.0 ft Held safety meeting Drilled to 8900.0 ft Drilled to 8900.0 ft (cont...) Circulated at 8900.0 ft Pulled out of hole to 7041.0 ft R.I.H. to 8900.0 ft Circulated at 8900.0 ft Took Gyro survey at 8900.0 ft Drilled to 10098.0 ft Drilled to 10125.0 ft (cont...) Cleared Mud shakers Drilled to 10658.0 ft Circulated at 10658.0 ft Backreamed to 8900.0 ft Serviced Top drive R.I.H. to 10658.0 ft Facility NK Main Pad Progress Report Well NK-41 Page 3 Rig POOL7 Date 05 August 98 Date/Time 12 Jul 97 13 Jul 97 14 Jul 97 15 Jul 97 16 Jul 97 17 Jul 97 18 Jul 97 19 Jul 97 20 Jul 97 21 Jul 97 18:30-20:00 20:00-05:30 05:30-06:00 06:00-07:30 07:30-10:30 10:30-11:30 11:30-13:00 13:00-17:00 17:00-20:30 20:30-20:40 20:40-20:45 20:45-00:00 00:00-01:30 01:30-06:00 06:00-12:30 12:30-14:00 14:00-06:00 06:00-19:30 19:30-21:30 21:30-23:15 23:15-00:00 00:00-06:00 06:00-06:00 06:00-03:30 03:30-04:30 04:30-06:00 06:00-14:00 14:00-15:00 15:00-18:30 18:30-20:30 20:30-23:30 23:30-01:30 01:30-04:00 04:00-06:00 06:00-09:30 09:30-10:30 10:30-13:00 13:00-21:00 21:00-22:00 22:00-06:00 06:00-20:00 20:00-22:00 22:00-05:00 05:00-06:00 06:00-06:30 06:30-11:00 11:00-11:30 11:30-12:00 12:00-16:00 16:00-00:30 00:30-03:00 03:00-04:00 04:00-06:00 06:00-07:00 Duration 1-1/2 hr 9-1/2 hr 1/2 hr 1-1/2 hr 3 hr 1 hr 1-1/2 hr 4 hr 3-1/2 hr 0 hr 0 hr 3-1/4 hr 1-1/2 hr 4-1/2 hr 6-1/2 hr 1-1/2 hr 16hr 13-1/2 hr 2 hr 1-3/4 hr 3/4 hr 6hr 24 hr 21-1/2 hr lhr 1-1/2 hr 8 hr lhr 3-1/2 hr 2hr 3 hr 2hr 2-1/2 hr 2hr 3-1/2 hr lhr 2-1/2 hr 8hr 1 hr 8 hr 14hr 2 hr 7 hr 1 hr 1/2 hr 4-1/2 hr 1/2 hr 1/2 hr 4 hr 8-1/2 hr 2-1/2 hr 1 hr 2 hr 1 hr Activity Circulated at 10658.0 ft Drilled to 11500.0 fl Circulated at 11500.0 ft Circulated at 11500.0 ft (cont...) Backreamed to 10288.0 ft Pulled out of hole to 8694.0 ft Backreamed to 7660.0 ft Pulled out of hole to 1000.0 ft Pulled BHA Retrieved Wear bushing Installed BOP test plug assembly Tested BOP stack Made up BHA no. 4 R.I.H. to 4000.0 ft R.I.H. to 11500.0 ft (cont...) Circulated at 11500.0 ft Drilled to 12500.0 ft Drilled to 13497.0 ft (cont...) Circulated at 13497.0 ft Pulled out of hole to 11500.0 ft R.I.H. to 13497.0 ft Drilled to 13779.0 ft Drilled to 15450.0 ft (cont...) Drilled to 15613.0 ft (cont...) Circulated at 15613.0 ft Pulled out of hole to 15100.0 ft Pulled out of hole to 7041.0 ft (cont...) Serviced Block line Pulled out of hole to 400.0 ft Pulled BHA Tested BOP stack Made up BHA no. 5 R.I.H. to 7041.0 ft R.I.H. to 10150.0 ft R.I.H. to 14825.0 ft (cont...) Reamed to 15613.0 ft Circulated at 15613.0 ft Drilled to 15944.0 ft Repaired Drilling tool / logs Drilled to 16599.0 ft Drilled to 17670.0 ft (cont...) Circulated at 17670.0 ft Pulled out of hole to 7041.0 ft Serviced Block line Serviced Top drive R.I.H. to 15935.0 ft Logged hole with LWD: DIR/FE/DD from 15935.0 ft to 16024.0 ft R.I.H. to 17670.0 ft Circulated at 17670.0 ft Pulled out of hole to 400.0 ft Pulled BHA Rigged up Top ram Rigged up Casing handling equipment Rigged up Casing handling equipment (cont...) Facility NK Main Pad Progress Report Well NK-41 Page 4 Rig POOL7 Date 05 August 98 Date/Time 22 Jul 97 23 Jul 97 24 Jul 97 25 Jul 97 26 Jul 97 27 Jul 97 28 Jul 97 07:00-07:30 07:30-06:00 06:00-07:00 07:00-15:30 15:30-16:00 16:00-16:30 16:30-18:30 18:30-19:30 19:30-21:00 21:00-22:00 22:00-22:30 22:30-03:00 03:00-04:00 04:00-06:00 06:00-08:00 08:00-09:15 09:15-17:30 17:30-18:30 18:30-21:00 21:00-21:30 21:30-22:00 22:00-23:00 23:00-01:00 01:00-02:30 02:30-03:30 03:30-06:00 06:00-14:00 14:00-15:30 15:30-06:00 06:00-04:30 04:30-06:00 06:00-08:00 08:00-19:30 19:30-21:30 21:30-22:30 22:30-00:00 00:00-02:00 02:00-02:30 02:30-03:00 03:00-04:00 04:00-05:30 05:30-06:00 06:00-08:00 08:00-08:30 08:30-11:00 11:00-11:30 11:30-13:00 13:00-13:30 13:30-14:30 14:30-15:30 15:30-06:00 06:00-07:30 07:30-13:00 t3:00-14:30 Duration 1/2 hr 22-1/2 hr 1 hr 8-1/2 hr 1/2 hr 1/2 hr 2 hr 1 hr 1-1/2 hr 1 hr 1/2 hr 4-1/2 hr 1 hr 2 hr 2hr 1-1/4 hr 8-1/4 hr lhr 2-1/2 hr 1/2 hr 1/2 hr 1 hr 2 hr 1-1/2 hr lhr 2-1/2 hr 8 hr 1-1/2 hr 14-1/2 hr 22-1/2 hr 1-1/2 hr 2hr 11-1/2 hr 2hr lhr 1-1/2 hr 2hr 1/2 hr 1/2 hr 1 hr 1-1/2 hr 1/2 hr 2 hr 1/2 hr 2-1/2 hr 1/2 hr 1-1/2 hr 1/2 hr 1 hr 1 hr 14-1/2 hr 1-1/2 hr 5-1/2 hr 1-1/2 hr Activity Held safety meeting Ran Casing to 9-5/8in (17100.0 ft OD) Ran Casing to 17661.0 ft (9-5/8in OD) (cont...) Circulated at 17670.0 ft Pumped Water based mud spacers - volume 70.000 bbl Mixed and pumped slurry - 152.000 bbl Displaced slurry - 1286.500 bbl Tested Casing Rigged down Casing handling equipment Installed Slip & seal assembly Rigged up Top ram Tested BOP stack Installed Bell nipple Made up BHA no. 6 Made up BHA no. 6 (cont...) R.I.H. to 4152.0 ft Singled in drill pipe to 9831.0 ft Circulated at 9831.0 ft R.I.H. to 17525.0 ft Serviced Block line Serviced Top drive Tested Casing Drilled cement to 17700.0 ft Circulated at 17700.0 ft Performed formation integrity test Drilled to 17885.0 ft Drilled to 18083.0 ft (cont...) -Circulated at 18083.0 ft Drilled to 18465.0 ft Drilled to 19476.0 ft (cont...) Circulated at 19476.0 ft Circulated at 19476.0 ft (cont...) Pulled out of hole to 6400.0 ft Laid down 1884.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 392.0 ft Pulled BHA Made up BHA no. 7 Serviced Top drive " Repaired Survey instruments ..... Made up BHA no. 7 R.I.H. to 4530.0 ft Circulated at 4530.0 ft Singled in drill pipe to 6420.0 ft · Circulated at 6420.0 ft R.I.H. to 12650.0 ft Circulated at 12650.0 ft R.I.H. to 17650.0 ft Circulated at 17650.0 ft R.I.H. to 19476.0 ft Repaired Drilling tool / logs Drilled to 20248.0 ft Repaired Survey instruments Drilled to 20612.0 ft Circulated at 20612.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 5 05 August 98 Date/Time 29 Jul 97 30 Jul 97 31 Jul 97 01 Aug 97 02 Aug 97 03 Aug 97 14:30-16:30 16:30-17:00 17:00-00:30 00:30-01:30 01:30-05:00 05:00-06:00 06:00-08:30 08:30-09:30 09:30-14:30 14:30-16:00 16:00-17:30 17:30-21:30 21:30-23:30 23:30-02:30 02:30-03:00 03:00-06:00 06:00-07:00 07:00-08:00 08:00-09:00 09:00-10:00 10:00-10:30 10:30-06:00 06:00-22:00 22:00-00:00 00:00-03:00 03:00-04:00 04:00-06:00 06:00-16:00 16:00-19:00 19:00-19:30 19:30-20:00 20:00-23:30 23:30-00:30 00:30-02:30 02:30-03:30 03:30-04:00 04:00-06:00 06:00-06:30 06:30-10:30 10:30-12:00 12:00-13:00 13:00-14:00 14:00-19:00 19:00-21:00 21:00-22:00 22:00-22:30 22:30-23:30 23:30-03:45 03:45-04:15 04:15-05:00 05:00-05:45 05:45-06:00 06:00-07:30 07:30-08:00 Duration 2 hr 1/2 hr 7-1/2 hr 1 hr 3-1/2 hr 1 hr 2-1/2 hr 1 hr 5 hr 1-1/2 hr 1-1/2 hr 4 hr 2hr 3 hr 1/2 hr 3 hr 1 hr 1 hr 1 hr 1 hr 1/2 hr 19-1/2 hr 16hr 2hr 3hr 1 hr 2hr 10hr 3 hr 1/2 hr 1/2 hr 3-1/2 hr lhr 2 hr lhr 1/2 hr 2 hr 1/2 hr 4 hr 1-1/2 hr 1 hr 1 hr 5 hr 2 hr 1 hr 1/2 hr 1 hr 4-1/4 hr 1/2 hr 3/4 hr 3/4 hr 1/4 hr 1-1/2 hr 1/2 hr Activity Circulated at 20612.0 ft Repaired Survey instruments Pulled out of hole to 10760.0 ft Laid down 944.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 407.0 ft Pulled BHA Pulled BHA (cont...) Tested Well control Repaired Handling equipment Repaired Blind ram Made up BHA no. 8 Tested Well control Made up BHA no. 8 R.I.H. to 9700.0 ft Circulated at 9700.0 ft R.I.H. to 16227.0 ft R.I.H. to 17660.0 ft (cont...) Serviced Block line Serviced Drillfloor / Derrick R.I.H. to 20478.0 ft Worked toolstring at 20351.0 ft Reamed to 20565.0 ft Circulated at 20510.0 ft Circulated at 20510.0 ft Circulated at 20250.0 ft Circulated at 20435.0 ft Pulled out of hole to 18642.0 ft Pulled out of hole to 237.0 ft (cont...) Pulled BHA Serviced Drillfloor / Derrick Rigged up Drillstring handling equipment Singled in drill pipe to 2394.0 ft Circulated at 2394.0 ft Pulled out of hole to 0.0 ft Ran Drillpipe to 2394.0 ft (3-1/2in OD) Rigged up Drillstring handling equipment Ran Drillpipe to 7700.0 ft (5-1/2in OD) Circulated at 7700.0 ft Ran Drillpipe in stands to 17600.0 ft Circulated at 17600.0 ft Ran Drillpipe in stands to 20512.0 ft Pulled Drillpipe in stands to 20130.0 ft Washed to 20500.0 ft Circulated at 20500.0 ft Mixed and pumped slurry - 194.000 bbl Displaced slurry - 392.000 bbl Pulled Drillpipe in stands to 19200.0 ft Circulated at 19195.0 ft Mixed and pumped slurry - 97.000 bbl Displaced slurry - 367.000 bbl Pulled Drillpipe in stands to 17602.0 ft Circulated at 17602.0 ft Circulated at 17602.0 ft (cont...) Rigged up Top drive Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 6 05 August 98 Date/Time 04 Aug 97 05 Aug 97 06 Aug 97 07 Aug 97 08 Aug 97 09 Aug 97 10 Aug 97 11 Aug 97 12 Aug 97 08:00-13:30 13:30-14:00 14:00-16:00 16:00-17:00 17:00-20:00 20:00-23:30 23:30-01:00 01:00-04:30 04:30-06:00 06:00-13:00 13:00-13:30 13:30-14:30 14:30-15:00 15:00-06:00 06:00-17:30 17:30-19:00 19:00-06:00 06:00-08:30 08:30-10:30 10:30-21:00 21:00-22:30 22:30-02:30 02:30-05:00 05:00-06:00 06:00-08:30 08:30-09:00 09:00-14:00 14:00-15:00 15:00-16:00 16:00-17:00 17:00-06:00 06:00-15:30 15:30-16:00 16:00-06:00 06:00-12:00 12:00-14:30 14:30-15:30 15:30-16:30 16:30-06:00 06:00-22:30 22:30-01:30 01:30-02:00 02:00-03:45 03:45-06:00 06:00-13:00 13:00-18:00 18:00-18:30 18:30-19:30 19:30-20:15 20:15-21:30 21:30-23:30 23:30-01:00 01:00-01:15 01:15-06:00 Duration 5-1/2 hr 1/2 hr 2 hr 1 hr 3 hr 3-1/2 hr 1-1/2 hr 3-1/2 hr 1-1/2 hr 7 hr 1/2 hr 1 hr 1/2 hr 15hr 11-1/2 hr 1-1/2 hr llhr 2-1/2 hr 2hr 10-1/2 hr 1-1/2 hr 4 hr 2-1/2 hr lhr 2-1/2 hr 1/2 hr 5 hr lhr lhr lhr 13hr 9-1/2 hr 1/2 hr ' 14hr 6hr 2-1/2 hr lhr lhr 13-1/2 hr 16-1/2 hr 3 hr 1/2 hr 1-3/4 hr 2-1/4 hr 7 hr 5 hr 1/2 hr 1 hr 3/4 hr 1-1/4 hr 2 hr 1-1/2 hr 1/4 hr 4-3/4 hr Activity Pulled Drillpipe in stands to 2400.0 ft Rigged up Drillstring handling equipment Laid down 2400.0 ft of 3-1/2in OD drill pipe Rigged down Drillstring handling equipment Made up BHA no. 9 R.I.H. to 7850.0 ft Singled in drill pipe to 9440.0 ft R.I.H. to 17660.0 ft Serviced Block line Serviced Block line (cont...) R.I.H. to 17920.0 ft Reamed to 18045.0 ft Drilled to 18100.0 ft Drilled to 18760.0 ft Drilled to 19042.0 ft (cont...) Circulated at 19042.0 ft Drilled to 19211.0 ft Drilled to 19242.0 ft (cont...) Circulated at 19242.0 ft Pulled out of hole to 120.0 ft Pulled BHA Tested All functions Made up BHA no. 10 R.I.H. to 2000.0 ft R.I.H. to 3300.0 ft (cont...) Circulated at 3300.0 ft R.I.H. to 17680.0 ft Serviced Drillfloor / DeiTick Circulated at 17680.0 ft R.I.H. to 19242.0 ft Drilled to 19630.0 ft Drilled to 19886.0 ft (cont...) Circulated at 19886.0 ft Drilled to 20270.0 ft Drilled to 20445.0 ft (cont...) Circulated at 20445.0 ft Pulled out of hole to 19232.0 ft R.I.H. to 20445.0 ft Drilled to 20842.0 ft Drilled to 21193.0 ft (cont...) Circulated at 21193.0 ft Pulled out of hole to 20445.0 ft Pumped out of hole to 20445.0 ft R.I.H. to 20633.0 ft R.I.H. to 21193.0 ft (cont...) Circulated at 21193.0 ft Rest hole at 21193.0 ft Pulled out of hole to 20445.0 ft R.I.H. to 21193.0 £t Drilled to 21225.0 fl Circulated at 21225.0 ft Pulled out of hole to 20325.0 ft Circulated at 20325.0 ft Pulled out of hole to 11000.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 7 05 August 98 Date/Time 13 Aug 97 14 Aug 97 15 Aug 97 16 Aug 97 06:00-08:30 08:30-10:30 10:30-13:00 13:00-16:00 16:00-20:30 20:30-21:00 21:00-00:00 00:00-02:00 02:00-02:30 02:30-04:30 04:30-05:45 05:45-06:00 06:00-07:00 07:00-08:30 08:30-09:00 09:00-10:30 10:30-11:30 11:30-13:00 13:00-15:00 15:00-15:30 15:30-16:30 16:30-21:30 21:30-23:30 23:30-06:00 06:00-12:00 12:00-16:00 16:00-17:00 17:00-20:00 20:00-00:00 00:00-02:15 02:15-03:00 03:00-06:00 06:00-07:00 07:00-08:00 08:00-14:30 14:30-17:00 17:00-18:00 18:00-18:30 18:30-19:30 19:30-22:30 22:30-23:00 23:00-02:00 02:00-02:30 02:30-05:45 05:45-06:00 06:00-09:00 09:00-10:00 10:00-12:00 12:00-13:30 13:30-16:30 16:30-17:00 17:00-18:30 18:30-19:00 19:00-20:00 Duration 2-1/2 hr 2 hr 2-1/2 hr 3 hr 4-1/2 hr 1/2 hr 3 hr 2 hr 1/2 hr 2 hr 1~ 1/4 hr 1/4 hr 1 hr 1-1/2 hr 1/2 hr 1~1/2 hr 1 hr 1-1/2 hr 2hr 1/2 hr 1 hr 5 hr 2 hr 6-1/2 hr 6hr 4hr lhr 3 hr 4hr 2-1/4 hr 3/4 hr 3 hr 1 hr lhr 6-1/2 hr 2-1/2 hr 1 hr 1/2 hr 1 hr 3 hr 1/2 hr 3hr 1/2 hr 3-1/4 hr 1/4 hr 3 hr 1 hr 2 hr 1-1/2 hr 3 hr l/2 hr 1-1/2 hr 1/2 hr 1 hr Activity Pulled out of hole to 6000.0 ft (cont...) Laid down 1426.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 240.0 ft Pulled BHA Tested All functions Serviced Drillfloor / Derrick Made up BHA no. 11 R.I.H. to 4600.0 ft Circulated at 4600.0 ft Singled in drill pipe to 6000.0 ft R.I.H. to 9500.0 ft Circulated at 9500.0 ft Circulated at 9500.0 ft (cont...) R.I.H. to 13600.0 ft Circulated at 13600.0 ft R.I.H. to 17661.0 ft Serviced Block line Circulated at 17661.0 ft R.I.H. to 20896.0 ft Pulled out of hole to 20648.0 ft Circulated at 20586.0 ft Worked stuck pipe at 20557.0 ft Circulated at 20557.0 ft Reamed to 20654.0 ft Reamed to 20836.0 ft (cont...) Worked stuck pipe at 20836.0 ft Pulled out of hole to 20460.0 ft Circulated at 20460.0 ft Washed to 20612.0 ft Circulated at 20580.0 ft Rest hole at 20580.0 ft Pulled out of hole to 18380.0 ft Pulled out of hole to 17661.0 ft (cont...) Circulated at 17661.0 ft Pulled out of hole to 6400.0 ft Laid down 1426.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 2600.0 ft Held safety meeting Pulled out of hole to 250.0 ft Pulled BHA Rigged up Drillstring handling equipment Singled in drill pipe to 2400.0 ft Circulated at 2400.0 fl Ran Drillpipe in stands to 10860.0 ft Circulated at 10860.0 ft Circulated at 10860.0 ft (cont...) Ran Drillpipe in stands to 13568.0 ft Circulated at 13568.0 ft Ran Drillpipe in stands to 17661.0 ft Circulated at 17661.0 ft Ran Drillpipe in stands to 19095.0 ft Circulated at 19095.0 ft Ran Drillpipe in stands to 20580.0 ft Circulated at 20580.0 fl Facility NK Main Pad Progress Report Well NK-41 Page 8 Rig POOL7 Date 05 August 98 Date/Time 17 Aug 97 18 Aug 97 19 Aug 97 20:00-20:15 20:15-20:30 20:30-01:00 01:00-01:45 01:45-02:00 02:00-03:00 03:00-03:20 03:20-03:30 03:30-03:35 03:35-03:45 03:45-04:00 04:00-04:30 04:30-05:00 05:00-05:30 05:30-06:00 06:00-09:00 09:00-09:15 09:15-09:30 09:30-10:10 10:10-11:15 11:15-12:00 12:00-17:00 17:00-17:15 17:15-17:50 17:50-18:30 18:30-19:30 19:30-05:30 05:30-06:00 06:00-06:05 06:05-11:30 11:30-12:00 12:00-15:00 15:00-19:30 19:30-22:00 22:00-23:00 23:00-23:05 23:05-01:00 01:00-02:30 02:30-03:30 03:30-04:00 04:00-05:30 05:30-06:00 06:00-06:05 06:05-08:30 08:30-09:00 09:00-10:30 10:30-11:00 11:00-13:00 13:00-14:30 14:30-17:00 17:00-18:00 18:00-20:30 20:30-22:30 22:30-23:30 Duration 1/4 hr 1/4 hr 4-1/2 hr 3/4 hr 1/4 hr 1 hr 1/4 hr 0hr 0 hr 0 hr 1/4 hr 1/2 hr 1/2 hr 1/2 hr 1/2 hr 3 hr 1/4 hr 1/4 hr 1/2 hr 1 hr 3/4 hr 5hr 1/4 hr 1/2 hr 1/2 hr lhr 10hr 1/2hr 0 hr 5-1/4 hr 1/2 hr 3 hr 4-1/2 hr 2-1/2 hr lhr 0 hr 1-3/4 hr 1-1/2 hr lhr 1/2 hr 1-1/2 hr 1/2 hr 0 hr 2-1/4 hr 1/2 hr 1-1/2 hr 1/2 hr 2 hr 1-1/2 hr 2-1/2 hr 1 hr 2-1/2 hr 2 hr I hr Activity Ran Drillpipe in stands to 21063.0 ft Singled in drill pipe to 21192.0 ft Circulated at 21068.0 ft Rigged up High pressure lines Held safety meeting Mixed and pumped slurry - 138.000 bbl Displaced slurry - 218.000 bbl Rigged up High pressure lines Displaced slurry - 4.000 bbl Rigged down High pressure lines Rigged up Top drive Displaced slurry - 146.000 bbl Rigged down High pressure lines Pulled Drillpipe in stands to 19660.0 ft Circulated at 19660.0 ft Circulated at 19685.0 ft (cont...) Held safety meeting Rigged up High pressure lines Mixed and pumped slurry - 123.000 bbl Displaced slurry - 376.000 bbl Pulled Drillpipe in stands to 18280.0 ft Circulated at 18280.0 ft Held safety meeting Batch mixed slurry - 76.000 bbl Mixed and pumped slurry - 76.000 bbl Displaced slurry - 350.000 bbl Pulled Drillpipe in stands to 2400.0 ft Rigged up Drillstring handling equipment Rigged up Drillstring handling equipment (cont...) Laid down 2400.0 ft of 3-1/2in OD drill pipe Rigged down Drillstring handling equipment Laid down 1426.0 ft of 5-1/2in OD drill pipe Tested All functions Made up BHA no. 12 R.I.H. to 2058.0 ft Circulated at 2058.0 ft Pulled out of hole to 218.0 ft Pulled BHA Made up BHA no. 13 R.I.H. to 300.0 ft R.I.H. to 1020.0 ft Circulated at 1020.0 fl Circulated at 1020.0 ft (cont...) R.I.H. to 2168.0 ft Circulated at 2168.0 ft R.I.H. to 3290.0 ft Circulated at 3290.0 fl R.I.H. to 4791.0 ft Reverse circulated at 4791.0 ft R.I.H. to 8261.0 ft Circulated at 8261.0 ft R.I.H. to 13101.0 ft Singled in drill pipe to 14550.0 ft Circulated at 14550.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 9 05 August 98 Date/Time 23:30-02:30 20 Aug 97 02:30-05:00 05:00-05:30 05:30-06:00 06:00-07:00 07:00-12:00 12:00-14:00 14:00-15:30 15:30-22:30 22:30-23:00 23:00-00:00 21 Aug 97 00:00-01:00 01:00-02:00 02:00-06:00 06:00-09:30 09:30-10:30 10:30-12:30 12:30-13:30 13:30-16:30 16:30-18:00 18:00-21:00 21:00-06:00 22 Aug 97 06:00-09:00 09:00-12:00 12:00-14:30 14:30-15:30 15:30-22:30 22:30-00:30 23 Aug 97 00:30-06:00 06:00-11:00 11:00-13:00 13:00-13:30 13:30-14:00 14:00-14:30 14:30-06:00 24 Aug 97 06:00-02:30 25 Aug 97 02:30-03:00 03:00-06:00 06:00-06:00 26 Aug 97 06:00-07:00 07:00-09:00 09:00-11:00 11:00-15:30 15:30-16:15 16:15-20:00 20:00-21:00 21:00-01:30 27 Aug 97 01:30-02:30 02:30-05:30 05:30-06:00 06:00-10:00 10:00-11:00 11:00-12:00 12:00-12:30 Duration 3 hr 2-1/2 hr 1/2 hr 1/2 hr 1 hr 5 hr 2 hr 1-1/2 hr 7 hr 1/2 hr 1 hr 1 hr lhr 4 hr 3-1/2 hr 1 hr 2hr lhr 3 hr 1-1/2 hr 3 hr 9hr 3 hr 3hr 2-1/2 hr lhr 7hr 2 hr 5-1/2 hr 5 hr 2 hr 1/2 hr 1/2 hr 1/2 hr 15-1/2 hr 20-1/2 hr 1/2 hr 3 hr 24 hr 1 hr 2 hr 2 hr 4-1/2 hr 3/4 hr 3-3/4 hr 1 hr 4-1/2 hr 1 hr 3 hr 1/2 hr 4 hr 1 hr 1 hr 1/2 hr Activity Laid down 3162.0 ft of 5in OD drill pipe R.I.H. to 17060.0 ft Drilled cement to 17125.0 fl Circulated at 17125.0 ft Circulated at 17125.0 ft (cont...) Drilled cement to 17600.0 ft Circulated at 17600.0 ft Tested Casing - Via annulus and string Pulled out of hole to 101.0 ft Pulled BHA Made up BHA no. 14 Serviced Drillfloor ! Derrick R.I.H. to 600.0 ft Singled in drill pipe to 3060.0 ft R.I.H. to 8602.0 ft Circulated at 8602.0 ft R.I.H. to 13296.0 ft Circulated at 13296.0 ft R.I.H. to 17603.0 ft Drilled cement to 17690.0 ft Circulated at 17690.0 ft Pulled out of hole to 213.0 ft Pulled BHA Made up BHA no. 15 R.I.H. to 5343.0 ft Circulated at 5343.0 ft R.I.H. to 17690.0 ft Set tool face Drilled to 17780.0 ft Drilled to 17925.0 fl (cont...) Circulated at 17925.0 ft Pulled out of hole to 17640.0 ft Performed formation integrity test R.I.H. to 17925.0 ft Drilled to 18680.0 ft Drilled to 19705.0 ft (cont...) Circulated at 19705.0 ft Drilled to 19836.0 ft Drilled to 20933.0 ft (cont...) Drilled to 21001.0 ft (cont...) Circulated at 21001.0 ft Rest hole at 21001.0 ft Pumped out of hole to 17600.0 ft Serviced Draw works Pulled out of hole to 9300.0 ft Repaired Drillstring handling equipment Pulled out of hole to 228.0 ft Pulled BHA Tested Well control Made up BHA no. 16 Made up BHA no. 16 (cont...) R.I.H. to 3160.0 ft Singled in drill pipe to 3627.0 ft Circulated at 4000.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 10 05 August 98 Date/Time 12:30-15:00 15:00-20:00 20:00-20:30 20:30-21:00 21:00-22:00 22:00-00:30 28 Aug 97 00:30-01:00 01:00-06:00 06:00-23:00 23:00-00:00 29 Aug 97 00:00-02:30 02:30-03:30 03:30-05:30 05:30-06:00 06:00-07:00 07:00-12:00 12:00-12:30 12:30-17:30 17:30-20:00 20:00-22:00 22:00-23:30 23:30-00:00 30 Aug 97 00:00-03:00 03:00-05:00 05:00-06:00 06:00-06:30 06:30-07:00 07:00-09:30 09:30-10:00 10:00-11:30 11:30-13:00 13:00-13:30 13:30-15:00 15:00-16:30 16:30-06:00 31 Aug 97 06:00-08:30 08:30-10:00 10:00-11:00 11:00-12:30 12:30-17:30 17:30-18:00 18:00-19:00 19:00-22:00 22:00-22:30 22:30-00:00 01 Sep 97 00:00-03:00 03:00-05:00 05:00-06:00 06:00-07:30 07:30-10:00 10:00-10:30 10:30-11:00 11:00-11:30 11:30-13:00 Duration 2-1/2 hr 5 hr 1/2 hr 1/2 hr 1 hr 2-1/2 hr 1/2 hr 5 hr 17 hr 1 hr 2-1/2 hr 1 hr 2 hr 1/2 hr lhr 5 hr 1/2 hr 5hr 2-1/2 hr 2hr 1-1/2 hr 1/2 hr 3hr 2 hr 1 hr 1/2hr 1/2 hr 2-1/2 hr 1/2 hr 1-1/2 hr 1-1/2 hr 1/2 hr 1-1/2 hr 1-1/2 hr 13-1/2 hr 2-1/2 hr 1-1/2 hr lhr 1-1/2 hr 5hr 1/2 hr 1 hr 3 hr 1/2 hr 1-1/2 hr 3 hr 2 hr 1 hr 1-1/2 hr 2-1/2 hr 1/2 hr 1/2 hr 1/2 hr 1-1/2 hr Activity Singled in drill pipe to 5200.0 ft R.I.H. to 17660.0 fl Serviced Top drive Serviced Block line R.I.H. to 20970.0 ft Circulated at 20970.0 ft Serviced Mud shakers Drilled to 21162.0 fi Drilled to 21685.0 ft (cont...) Functioned Drilling tool / logs Repaired Mud pumps Repaired Drilling tool / logs Circulated at 21685.0 ft Rest hole at 21685.0 ft Rest hole at 21685.0 ft (cont...) Pumped out of hole to 17500.0 ft Serviced Drillfloor / Derrick Pulled out of hole to 5856.0 ft Laid down 1400.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 233.0 ft Pulled BHA Serviced Drillfloor / Derrick Made up BHA no. 17 R.I.H. to 4534.0 ft Singled in drill pipe to 5100.0 ft Singled in drill pipe to 5889.0 ft (cont...) Circulated at 5889.0 ft R.I.H. to 13000.0 ft Circulated at 13000.0 ft R.I.H. to 17680.0 ft Serviced Top drive Repaired Mud pumps R.I.H. to 21685.0 ft Circulated at 21685.0 ft Drilled to 22000.0 ft Drilled to 22093.0 ft (cont...) Functioned Downhole tools Circulated at 22093.0 ft Rest hole at 22093.0 ft Pumped out of hole to 17500.0 ft Serviced Drillfloor ! Derrick Serviced Block line Pumped out of hole to 13500.0 ft Repaired Spinner Pumped out of hole to 11420.0 ft Pulled out of hole to 5992.0 ft Laid down 1416.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 3420.0 ft Pulled out of hole to 233.0 ft (cont...) Pulled BHA Serviced Drillfloor / Derrick Serviced Iron roughneck Serviced Flowline Singled in drill pipe to 615.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date I1 05 August 98 Date/Time 02 Sep 97 03 Sep 97 04 Sep 97 05 Sep 97 06 Sep 97 07 Sep 97 13:00-18:00 18:00-19:00 19:00-21:30 21:30-22:30 22:30-23:45 23:45-00:00 00:00-01:00 01:00-02:00 02:00-04:00 04:00-04:30 04:30-05:15 05:15-05:45 05:45-06:00 06:00-08:00 08:00-09:00 09:00-12:30 12:30-13:00 13:00-19:00 19:00-20:00 20:00-20:30 20:30-23:30 23:30-03:00 03:00-03:30 03:30-05:30 05:30-06:00 06:00-07:00 07:00-07:30 07:30-12:00 12:00-12:30 12:30-14:30 14:30-15:00 15:00-16:30 16:30-01:00 01:00-01:15 01:15-02:00 02:00-03:15 03:15-06:00 06:00-12:30 12:30-13:00 13:00-14:30 14:30-15:30 15:30-00:00 00:00-01:30 01:30-02:30 02:30-03:30 03:30-06:00 06:00-06:00 06:00-10:30 10:30-13:00 13:00-18:00 18:00-22:30 22:30-00:00 00:00-03:00 03:00-04:00 Duration 5 hr 1 hr 2-1/2 hr 1 hr 1-1/4 hr 1/4 hr 1 hr 1 hr 2 hr 1/2 hr 3/4 hr 1/2 hr 1/4 hr 2hr 1 hr 3-1/2 hr 1/2 hr 6hr lhr 1/2 hr 3hr 3-1/2 hr 1/2 hr 2 hr 1/2 hr 1 hr 1/2 hr 4-1/2 hr 1/2 hr 2hr 1/2 hr 1-1/2 hr 8-1/2 hr 1/4 hr 3/4 hr 1-1/4 hr 2-3/4 hr 6-1/2 hr 1/2hr 1-1/2 hr 1 hr 8-1/2 hr 1-1/2 hr 1 hr 1 hr 2-1/2 hr 24 hr 4-1/2 hr 2-1/2 hr 5 hr 4-1/2 hr 1-1/2 hr 3 hr 1 hr Activity Ran Drillpipe in stands to 10713.0 ft Repaired Spinner Ran Drillpipe in stands to 17610.0 ft Circulated at 17610.0 ft Ran Drillpipe in stands to 20240.0 ft Repaired Iron roughneck Ran Drillpipe in stands to 22075.0 ft Rigged up Handling equipment Circulated at 22075.0 ft Mixed and pumped slurry - 32.000 bbl Displaced slurry - 460.000 bbl Pulled Drillpipe in stands to 21700.0 ft Circulated at 21700.0 ft Circulated at 21700.0 ft (cont...) Flow check Pumped out of hole to 17600.0 ft Flow check Pulled out of hole to 615.0 ft Laid down 615.0 ft of Drillpipe Rigged up Drillstring handling equipment Tested Well control Made up BHA no. 18 Functioned downhole tools at 322.0 ft R.I.H. to 5800.0 ft Singled in drill pipe to 6270.0 ft Singled in drill pipe to 7195.0 ft (cont...) Circulated at 7195.0 ft R.I.H. to 17661.0 ft Circulated at 17661.0 ft R.I.H. to 21641.0 ft Washed to 21726.0 ft Drilled cement to 21767.0 ft Drilled to 21855.0 ft Drilled to 21861.0 ft Worked toolstring at 21861.0 ft Drilled to 21917.0 ft Drilled to 21927.0 ft Drilled to 21948.0 ft (cont...) Serviced Mud pumps Drilled to 21955.0 ft Functioned Survey instruments Drilled to 22133.0 ft Drilled to 22141.0 ft Drilled to 22168.0 ft Functioned M.W.D. tool Drilled to 22200.0 ft Drilled to 22905.0 ft (cont...) Drilled to 22910.0 ft (cont...) Rest hole at 22910.0 ft Pumped out of hole to 16950.0 ft Pulled out of hole to 6000.0 ft Laid down 1430.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 236.0 ft Downloaded MWD tool Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page 12 Date 05 August 98 Date/Time 08 Sep 97 09 Sep 97 10 Sep 97 11 Sep 97 12 Sep 97 04:00-04:30 04:30-06:00 06:00-07:00 07:00-08:30 08:30-10:30 10:30-11:30 11:30-13:30 13:30-15:00 15:00-17:00 17:00-18:00 18:00-20:00 20:00-23:00 23:00-06:00 06:00-00:00 00:00-02:30 02:30-03:30 03:30-05:00 05:00-06:00 06:00-07:00 07:00-10:00 10:00-12:30 12:30-19:30 19:30-00:30 00:30-01:30 01:30-04:00 04:00-06:00 06:00-07:30 07:30-11:00 11:00-12:00 12:00-17:00 17:00-19:00 19:00-19:30 t9:30-20:30 20:30-21:30 21:30-22:30 22:30-00:00 00:00-01:00 O1:00-02:30 02:30-04:30 04:30-06:00 06:00-08:00 08:00~10:30 10:30-11:30 11:30-12:30 12:30-17:30 17:30-19:30 19:30-22:30 22:30-23:00 23:00-00:00 00:00-01:00 O1:00-06:00 06:00-06:30 06:30-17:30 17:30-18:30 Duration 1/2 hr 1-1/2 hr 1 hr 1-1/2 hr 2 hr 1 hr 2 hr 1-1/2 hr 2 hr 1 hr 2 hr 3 hr 7 hr 18hr 2-1/2 hr 1 hr 1-1/2 hr lhr 1 hr 3hr 2-1/2 hr 7hr 5hr 1 hr 2-1/2 hr 2hr 1-1/2 hr 3-1/2 hr 1 hr 5hr 2hr 1/2 hr lhr lhr lhr 1-1/2 hr lhr 1-1/2 hr 2 hr 1-1/2 hr 2hr 2-1/2 hr 1 hr 1 hr 5 hr 2 hr 3 hr 1/2 hr 1 hr 1 hr 5 hr 1/2 hr 11 hr 1 hr Activity Pulled BHA Made up BHA no. 19 Made up BHA no. 19 (cont...) R.I.H. to 3600.0 ft Singled in drill pipe to 5026.0 ft Circulated at 5026.0 fl R.I.H. to 12356.0 ft Circulated at 12356.0 ft R.I.H. to 17661.0 ft Serviced Block line Circulated at 17661.0 ft R.I.H. to 22910.0 ft Drilled to 23145.0 ft Drilled to 23742.0 ft (cont...) Circulated at 23742.0 ft Rest hole at 23742.0 ft Pulled out of hole to 21641.0 ft ,:.'~i~-:i(3 k!!! 13: ~.'~:':': ~?,'.r!s;. ~ .......... r ii,'" R.I.H. to 22800.0 ft R.I.H. to 23742.0 ft (cont...) "-' ...... '-""~' Circulated at 23742.0 ft Rest hole at 23742.0 ft Pumped out of hole to 17600.0 ft Pulled out of hole to 5800.0 ft Laid down 930.0 ft of 5-1/2in OD drill pipe Pulled out of hole to 280.0 ft Pulled BHA Pulled BHA Tested BOP stack Serviced Drillfloor / Derrick Ran Drillpipe to 2400.0 ft (3-1/2in OD) Ran Drillpipe in stands to 6000.0 ft Circulated at 6000.0 ft Ran Drillpipe in stands to 10000.0 ft Circulated at 10000.0 ft Ran Drillpipe in stands to 14000.0 ft Circulated at 14000.0 ft Ran Drillpipe in stands to 17600.0 ft Circulated at 17600.0 ft Ran Drillpipe in stands to 23742.0 ft Circulated at 23742.0 ft Circulated at 23742.0 ft (cont...) Mixed and pumped slurry - 106.000 bbl Displaced slurry - 468.000 bbl Pulled out of hole to 22250.0 £t Circulated at 22250.0 ft Pulled out of hole to 18800.0 ft Circulated at 18800.0 ft Mixed and pumped slurry - 129.000 bbl Displaced slurry - 357.000 bbl Pulled out of hole to 16900.0 ft Circulated at 16900.0 ft Circulated at 16900.0 ft Laid down 10230.0 fl of 5-1/2in OD drill pipe Ran Drillpipe in stands to 15000.0 ft Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 13 05 August 98 Date/Time 13 Sep 97 18:30-05:30 05:30-06:00 Duration llhr 1/2 hr Activity Laid down 12245.0 fl of 5-1/2in OD drill pipe Installed Drillstring handling equipment Facility NK Main Pad Progress Report Well NK-41 Rig POOL 7 Page Date 1 04 August 98 Date/Time 13 Sep 97 14 Sep 97 06:00-09:00 09:00-10:30 10:30-12:00 12:00-19:00 19:00-21:30 21:30-00:00 00:00-01:00 01:00-04:30 04:30-06:00 06:00-08:00 08:00-13:00 13:00-14:00 14:00-16:00 16:00-17:00 17:00-18:00 18:00-20:30 20:30-21:30 21:30-22:00 22:00-00:00 Duration 3 hr 1-1/2 hr 1-1/2 hr 7 hr 2-1/2 hr 2-1/2 hr 1 hr 3-1/2 hr 1-1/2 hr 2 hr 5 hr 1 hr 2 hr 1 hr 1 hr 2-1/2 hr 1 hr 1/2 hr 2hr Activity Laid down 2400.0 ft of 3-1/2in OD drill pipe Serviced Drillfloor / Derrick Rigged up Drillstring handling equipment Singled in drill pipe to 3500.0 ft Made up BHA no. 20 Singled in drill pipe to 3270.0 ft Circulated at 3270.0 ft Singled in drill pipe to 6000.0 ft Circulated at 6000.0 ft Repaired Iron roughneck Singled in drill pipe to 10449.0 ft Circulated at 10449.0 ft Singled in drill pipe to 12425.0 ft R.I.H. to 13641.0 ft Circulated at 13641.0 ft Singled in drill pipe to 16000.0 ft Circulated at 16000.0 ft Singled in drill pipe to 16965.0 ft Washed to 17200.0 ft Surface Cement Summary Well NK-41 Rig Pool Rig 7 Date 7/7/97 Started at 7/5/97,1830 HRS On bottom at 7/6/97,0700 HRS String wt on bottom 465 P/U Ibs CASING/LINER SUMMARY: Size 13-38-/B Connection: its BTC - 172 Type Surface Makeup Torque 8000 ft-Ibs THREAD LOCK: on bottom 3 its CENTRALIZER SUMMARY: Size 16" X 13-3/8" 2/Jt on its - Type Spring Bow Centralizers 1 /Jt on its 1 - 40 Total Used 42 124 - 125 FLOAT EQUIPMENT: Landing Collar: Btm of it # 3 6957 Float Collar: Top of it # 1 @ 6998 ' Float Shoe: Btm of it # 1 @ 7041 Marker Jt: SIZE N/A @ Describe any hole problems: None CEMENT SUMMARY Csg on bottom at 700 HRS, Circulated for 2/1/02 Hrs/Min Pumped preflush: 50 bbis of NSCI 10.4 ppg. Start mixing cement at 10:55 HRS. Bottom plug used? Yes Lead cement volume based on Calculated open hole plus 30 % excess. Mixed and pumped cement 325 bbls of Permafrost'E' 12 ppg. 1823�cu. ft. 840,SX Cement Additives: Amount- Units/Addiflve Tail cement volume based on Mixed and pumped cement Cement Additives: Follow with fresh water: Calculated displacement was: Float equipment held? Field cement test: CIP at Reciprocated pipe during job? Pump rate while mixing was Pump rate while displacing was 750' TVD Open hole volume plus 244 bbls of Class'G' 1369- ft. 1190 Amoun Units/Additive 0.20% CFR-3 0.20% Halad 344 10 bbls. 1032 bbls. yes/no N/A _ 14:02 HRS, yes/nu 7,50 BPM 14 BPM Amount Units/Additive 30 % excess. 15.8 ppg. Amount Units/Additive Drop plug. Displace with 1032 bbis mud. Bump plug. Yes DATE: 07/06/97' @ 800 psi @ 650 psi COMMENTS: Stage 2-Op4rtQy collarw! 2500 Psi. Circulate out cement and clean u hole Pump 50 bbls of NSCI spacer w/ red dye, Pump 463 s le blad slurry (Permafrost 'E' @ 12.0 ppa). Pump 9 blels of tail slurry (Permafrost'C' @ 15.6 ppg). Dropped -the closing plug and displace w/ rig 298 bbis at 13 bpm. Cement to surface. Bump the plug and close tht- ES Cementer w/ 1500 psi. CIP @ 16:40 hrs, 7/6/97 Revised: 11 /10/93 by KKS 4� 3 Pr- 1 -- l I J� S X Rig Supervisor: Les Peak �J to r- / = Operator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41 Date: 18:43, 06 Aug 98 DEFINITIVE WDF : Yes Description :Final Definitive Survey Associated wellbore : Current Created/Updated By delappcs on 12:19, 06 Feb 9 Facility Details : Actual Location Coordinates WDF type : Composite Latitude 70 deg 21 min 5.879 sec N Longitude 148 deg 15 min 27.984 sec W Page[: 1 - . .... Eastings 714553.260 feet Northings 5981257.790 feet Geodetic Datum NAD27AFT Mapping Projection TMALSK4F Grid data at Well Reference Point : Convergence 1.696226 deg Scale Factor 0.999956 Tie In Details Tie In Type : Well Reference Coordinates MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 40.70 0.000 0.000 0.00 0.00 TVD (ft) 40.70 Concatenation of survey stations Number of Survey Points : 386 End Depth : 23742.00 ft Extrapolation to TD - average build rate : - average walk rate : 0.000 deg/100ft 0.000 deg/100ft SurveyComposition Details Survey Description Gyrodata drillpipe multishot -continuous MWD - Standard (input as multishot) Start Depth (ft) 100.00 17687.10 End Depth (ft) 17650.00 23742.00 Ail Depths are relative to BRT on rig POOL 7 Ail Azimuths are relative to TRUE North ORI, GINAL 'Operator: ARCO Field: Niakuk Description : Final Definitive Survey Well Definition Survey Details Report Well: NK-41 Date: 18:43, 06 Aug 98 Page: 2 Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 40.70 0.00 0.00 100.00 0.27 312.90 200.00 0.08 60.42 300.00 0.23 165.55 400.00 0.25 285.22 500.00 0.19 313.96 599.00 0.14 102.51 699.00 0.28 246.75 799.00 0.14 348.96 903.00 0.16 90.67 1000.00 0.22 242.90 1101.00 0.26 339.33 1200.00 0.23 7.88 1308.00 0.25 4.38 1399.00 0.28 27.01 1500.00 0.29 28.71 1599.00 0.27 348.18 1700.00 0.32 357.94 1805.00 0.77 40.76 1904.00 1.82 48.86 2006.00 3.58 43.78 2106.00 5.30 39.20 2206.00 6.41 39.83 2306.00 7.80 43.99 2406.00 8.35 45.17 2506.00 11.05 46.67 2606.00 13.47 46.16 2706.00 15.30 47.25 2756.00 16.59 48.38 2800.00 17.51 48.62 2850.00 17.93 49.17 2900.00 18.69 49.71 2950.00 19.13 51.56 3000.00 20.35 52.36 3050.00 22.14 51.84 North (ft) 0.00 0.10 0.29 0.13 -0.01 0.17 0.25 0.13 0.15 0.28 0.19 0.32 0.72 1.17 1.57 2.01 2.46 2.98 3.80 5.34 8.71 14.54 22.41 31.58 41.58 53.27 67.92 84.94 94.16 102.71 112.72 122.93 133.20 143.61 154.74 East TVD(BRT) TVD(SS) (ft) 0.00 -0.10 -0.21 -0.10 -0.26 -0.59 -0.59 -0.70 -0.95 -0.83 -0.86 -1.11 1101.00 1040.90 -1.16 1200.00 1139.90 -1.11 1307.99 1247.89 -1.00 1398.99 1338.89 -0.76 1499.99 1439.89 -0.69 1598.99 1538.89 -0.75 1699.99 1639.89 -0.30 1804.98 1744.88 1.32 1903.96 1843.86 4.74 2005.84 1945.74 9.82 2105.54 2045.44 16.32 2205.01 2144.91 24.61 2304.24 2244.14 34.47 2403.25 2343.15 46.59 2501.81 2441.71 61.96 2599.53 2539.43 80.06 2696.39 2636.29 90.24 2744.46 2684.36 99.90 2786.53 2726.43 111.37 2834.16 2774.06 123.30 2881.62 2821.52 135.83 2928.93 2868.83 149.13 2975.99 2915.89 163.42 3022.59 2962.49 DLS (ft) (ft) (deg/100ft) 40.70 -19.40 0.000 100.00 39.90 0.455 200.00 139.90 0.304 300.00 239.90 0.262 400.00 339.90 0.415 500.00 439.90 0.124 599.00 538.90 0.321 699.00 638.90 0.402 799.00 738.90 0.338 903.00 842.90 0.224 1000.00 939.90 0.381 0.355 0.126 0.023 0.119 0.013 0.197 0.070 0.550 1.074 1.740 1.755 1.112 1.481 0.574 2.712 2.422 1.850 2.654 2.097 0.904 1.557 1.487 2.499 3.600 Easting (feet) 721841.36 721841.25 721841.13 721841.25 721841.09 721840.76 721840.75 721840.65 721840.40 721840.52 721840.49 721840.24 721840.17 721840.21 721840.31 721840.53 721840.59 721840.52 721840.94 721842.52 721845.84 721850.74 721857.00 721865.01 721874.58 721886.35 721901.28 721918.86 721928.76 721938.17 721949.33 721960.96 721973.18 721986.16 722000.12 Northing Latitude Longitud (feet) Deg Min Sec Deg Min Se 5980017.95 n70 20 51.603 w148 11 56.12 5980018.04 n70 20 51.603 w148 11 56.12 5980018.24 n70 20 51.605 w148 11 56.1~ 5980018.08 n70 20 51.604 w148 11 56.1~ 5980017.94 n70 20 51.602 w148 11 56.1~ 5980018.10 n70 20 51.604 w148 11 56.15 5980018.19 n70 20 51.605 w148 11 56.1~ 5980018.06 n70 20 51.604 w148 11 56.1~ 5980018.08 n70 20 51.604 w148 11 56.1t 5980018.20 n70 20 51.605 w148 11 56.1! 5980018.12 n70 20 51.604 w148 11 56.1t 5980018.24 n70 20 51.606 w148 11 56.1t 5980018.64 n70 20 51.610 w148 11 56.1t 5980019.09 n70 20 51.614 w148 11 56.1t 5980019.49 n70 20 51.618 w148 11 56.1t 5980019.94 n70 20 51.622 w148 11 56.1! 5980020.39 n70 20 51.627 w148 11 56.1~ 5980020.91 n70 20 51.632 w148 11 56.1! 5980021.75 n70 20 51.640 w148 11 56.1~ 5980023.33 n70 20 51.655 w148 11 56.0! 5980026.80 n70 20 51.688 w148 11 55.9! 5980032.78 n70 20 51.746 w148 11 55.8, 5980040.83 n70 20 51.823 w148 11 55.6! 5980050.24 n70 20 51.913 w148 11 55.41 5980060.53 n70 20 52.011 w148 11 55.11 5980072.58 n70 20 52.126 w148 11 54.7' 5980087.67 n70 20 52.271 w148 11 54.31 5980105.23 n70 20 52.438 w148 11 53.71 5980114.74 n70 20 52.529 w148 11 53.41 5980123.57 n70 20 52.613 w148 11 53.21 5980133.91 n70 20 52.711 w148 11 52.8: 5980144.47 n70 20 52.811 w148 11 52.51 5980155.11 n70 20 52.913 w148 11 52.1, 5980165.90 n70 20 53.015 w148 11 51.7' 5980177.45 n70 20 53.124 w148 11 51.3. ~perator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41 Date: 18:43, 06 Aug 98 Page: 3 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 3100.00 24.16 49.92 3150.00 25.60 48.74 3200.00 27.01 47.19 3250.00 27.96 46.01 3300.00 29.01 45.49 3350.00 29.71 45.30 3400.00 31.06 45.67 3450.00 32.54 47.27 3500.00 33.82 48.70 3550.00 35.60 49.93 3600.00 37.19 51.11 3650.00 38.38 51.42 3700.00 39.92 51.28 3750.00 41.04 50.68 3800.00 42.52 50.12 3850.00 43.76 49.62 3900.00 45.01 49.19 3950.00 46.10 48.99 4000.00 47.24 48.21 4050.00 48.99 47.22 4100.00 50.38 46.43 4150.00 52.03 46.18 4200.00 53.64 46.07 4250.00 55.44 46.06 4300.00 57.17 46.09 4350.00 58.10 46.25 4400.00 58.46 46.54 4450.00 59.14 46.70 4500.00 60.35 46.53 4550.00 61.99 46.40 4600.00 63.17 45.98 4650.00 64.45 45.44 4700.00 65.85 45.07 4750.00 66.99 44.66 4800.00 68.43 44.39 North (ft) 167.15 180.86 195.70 211.56 228.20 245.41 263.14 281.28 299.59 318.14 337.00 356.17 375.89 396.32 417.56 439.59 462.35 485.73 509.78 534.83 560.92 587.84 615.45 643.71 672.57 701.81 731.15 760.52 790.19 820.36 851.08 882.41 914.35 946.83 979.81 East TVD(BRT) TVD(SS) (ft) 178.66 194.61 3113.92 3053.82 211.06 3158.74 3098.64 227.83 3203.10 3143.00 244.91 3247.04 3186.94 262.36 3290.62 3230.52 280.39 3333.75 3273.65 299.50 3376.25 3316.15 319.83 3418 09 3357.99 341.42 3459 19 3399.09 364.33 3499 44 3439.34 388.22 3538 96 3478.86 412.87 3577 73 3517.63 438.09 3615 76 3555.66 463.76 3653 05 3592.95 489.90 3689 53 3629.43 516.45 3725 26 3665.16 543.43 3760 27 3700.17 570.71 3794 58 3734.48 598.24 3827 96 3767.86 626.04 3860 31 3800.21 654.22 3891 64 3831.54 682.94 3921 84 3861.74 712.26 3950.85 3890.75 742.22 3978.59 3918.49 772.69 4005.35 3945.25 803.49 4031.64 3971.54 834.57 4057.54 3997.44 865.96 4082.73 4022.63 897.71 4106.84 4046.74 929.74 4129.87 4069.77 961.86 4151.93 4091.83 994.08 4172.95 4112.85 1026.40 4192.95 4132.85 1058.84 4211.91 4151.81 DLS Easting (ft) (ft) (d~g/-m!.P0~ft) (feet) 3068.56 3008.46 '4.312-~ 722014.98 3.046 722030.52 3.137 722046.52 2.190 722062.81 2.158 722079.39 1.412 722096.32 2.726 722113.82 3.406 722132.38 3.000 722152.16 3.826 722173.20 3.475 722195.53 2.410 722218.85 3.085 722242.90 2.372 722267.50 3.053 722292.53 2.573 722318.00 2.571 722343.87 2.199 722370.14 2.547 722396.70 3.798 722423.48 3.030 722450.49 3.323 722477.85 3.225 722505.74 3.600 722534.22 3.460 722563.31 1.880 722592.90 0.873 722622.81 1.387 722653.01 2.438 722683.51 3.288 722714.35 2.475 722745.45 2.737 722776.63 2.879 722807.89 2.401 722839.24 2.923 722870.69 Northing Latitude Longitud, (feet) Deg Min Sec Deg Min Se, 5980190.31 n70 20 53.246 w148 11 50.91 5980204.49 n70 20 53.381 w148 11 50.44 5980219.81 n70 20 53.527 w148 11 49.96 5980236.15 n70 20 53.683 w148 11 49.47 5980253.29 n70 20 53.847 w148 11 48.97 5980271.01 nT0 20 54.016 w148 11 48.46 5980289.27 n70 20 54.190 w148 11 47.94 5980307.96 nT0 20 54.369 w148 11 47.38 5980326.87 n70 20 54.549 w148 11 46.78 5980346.05 n70 20 54.731 w148 11 46.15 5980365.58 n70 20 54.917 w148 11 45.48 5980385.44 n70 20 55.105 w148 11 44.79 5980405.88 n70 20 55.299 w148 11 44.07 5980427.05 n70 20 55.500 w148 11 43.33 5980449.04 n70 20 55.709 w148 11 42.58 5980471.84 n70 20 55.926 w148 11 41.81 5980495.37 n70 20 56.150 w148 11 41.04 5980519.53 n70 20 56.379 w148 11 40.25 5980544.38 n70 20 56.616 w148 11 39.45 5980570.23 n70 20 56.862 w148 11 38.65 5980597.13 n70 20 57.119 w148 11 37.84 5980624.87 n70 20 57.384 w148 11 37.01 5980653.32 n70 20 57.655 w148 11 36.17 5980682.43 n70 20 57.933 w148 11 35.32 5980712.16 n70 20 58.217 w148 11 34.44 5980742.30 n70 20 58.504 w148 11 33.55 5980772.53 n70 20 58.793 w148 11 32.65 5980802.81 n70 20 59.082 w148 11 31.74 5980833.39 n70 20 59.373 w148 11 30.82 5980864.48 n70 20 59.670 w148 11 29.9G 5980896.14 n70 20 59.972 w148 11 28.96 5980928.41 n70 21 0.280 w148 11 28.02 5980961.28 n70 21 0.594 w148 11 27.08 5980994.71 n70 21 0.914 w148 11 26.13 5981028.63 n70 21 1.238 w148 11 25.19 Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 4 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se 4850.00 69.45 44.08 1013.24 1091.39 4229.88 4169.78 2.120 722902.23 5981063.01 n70 21 1.567 w148 11 24.23 4900.00 70.54 43.41 1047.19 1123.88 4246.98 4186.88 2.518 722933.69 5981097.90 n70 21 1.901 w148 11 23.28 4950.00 71.13 43.20 1081.55 1156.27 4263.40 4203.30 1.245 722965.05 5981133.21 n70 21 2.239 w148 11 22.34 5000.00 70.52 43.29 1115.96 1188.63 4279.82 4219.72 1.232 722996.38 5981168.55 n70 21 2.577 w148 11 21.39 5100.00 71.21 43.60 1184.55 1253.59 4312.60 4252.50 0.750 723059.28 5981239.03 n70 21 3.251 w148 11 19.49 5150.00 71.52 43.77 1218.81 1286.32 4328.58 4268.48 0.699 723090.97 5981274.24 n70 21 3.588 w148 11 18.54 5200.00 70.95 43.79 1252.99 1319.07 4344.66 4284.56 1.141 723122.70 5981309.38 n70 21 3.924 w148 11 17.58 5250.00 70.61 43.71 1287.09 1351.72 4361.12 4301.02 0.697 723154.33 5981344.43 n70 21 4.260 w148 11 16.62 5300.00 71.03 43.73 1321.22 1384.36 4377.55 4317.45 0.841 723185.94 5981379.51 n70 21 4.595 w148 11 15.67 5350.00 71.31 43.72 1355.42 1417.07 4393.69 4333.59 0.560 723217.62 5981414.66 n70 21 4.932 w148 11 14.71 5400.00 71.76 44.04 1389.61 1449.94 4409.52 4349.42 1.086 723249.47 5981449.81 n70 21 5.268 w148 11 13.75 5450.00 71.87 44.28 1423.69 1483.04 4425.13 4365.03 0.506 723281.53 5981484.85 n70 21 5.603 w148 11 12.7~ 5500.00 71.30 44.17 1457.68 1516.13 4440 92 4380.82 1.159 723313.60 5981519.80 n70 21 5.937 w148 11 11.82 5550.00 71.13 44.19 1491.63 1549.11 4457 02 4396.92 0.342 723345.57 5981554.71 n70 21 6.271 w148 11 10.85 5600.00 70.91 44.05 1525.57 1582.03 4473 28 4413.18 0.514 723377.46 5981589.61 n70 21 6.605 w148 11 9.86 5650.00 70.62 43.72 1559.60 1614.76 4489 76 4429.66 0.851 723409.17 5981624.59 n70 21 6.939 w148 11 8.94 5700.00 70.30 43.46 1593.73 1647.25 4506 48 4446.38 0.806 723440.63 5981659.66 n70 21 7.275 w148 11 7.96 5750.00 70.32 43.09 1628.00 1679.52 4523 33 4463.23 0.698 723471.87 5981694.88 n70 21 7.612 w148 11 7.0~ 5800.00 70.33 42.88 1662.44 1711.62 4540.16 4480.06 0.396 723502.94 5981730.25 n70 21 7.950 w148 11 6.1( 5850.00 70.46 42.44 1697.08 1743.53 4556.94 4496.84 0.869 723533.81 5981765.82 n70 21 8.291 w148 11 5.1~ 5900.00 71.72 41.57 1732.23 1775.19 4573.14 4513.04 3.010 723564.41 5981801.89 n70 21 8.637 w148 11 4.2~ 5950.00 72.59 40.85 1768.03 1806.54 4588.46 4528.36 2.215 723594.69 5981838.60 n70 21 8.989 w148 11 3.32 6000.00 72.89 40.94 1804.13 1837.80 4603.30 4543.20 0.624 723624.87 5981875.60 n70 21 9.344 w148 11 2.4~ 6050.00 73.34 41.07 1840.23 1869.19 4617.82 4557.72 0.934 723655.17 5981912.62 n70 21 9.699 w148 11 1.5( 6100.00 73.07 41.01 1876.34 1900.62 4632.27 4572.17 0.552 723685.52 5981949.64 n70 21 10.054 w148 11 0.51 6150.00 73.51 41.16 1912.43 1932.09 4646.65 4586.55 0.926 723715.91 5981986.65 nT0 21 10.409 w148 10 59.6t 6200.00 73.69 41.30 1948.51 1963.71 4660.76 4600.66 0.449 723746.44 5982023.64 n70 21 10.763 w148 10 58.7~ 6250.00 72.91 41.32 1984.48 1995.32 4675.13 4615.03 1.560 723776.97 5982060.53 n70 21 11.117 w148 10 57.8~ 6300.00 72.80 41.33 2020.36 2026.87 4689.87 4629.77 0.221 723807.44 5982097.33 n70 21 11.470 w148 10 56.8~ 6350.00 72.50 41.38 2056.18 2058.40 4704.78 4644.68 0.608 723837.90 5982134.07 n70 21 11.822 w148 10 55.9~ 6400.00· 72.12 41.45 2091.91 2089.91 4719.97 4659.87 0.772 723868.34 5982170.71 n70 21 12.173 w148 10 55.0~ 6450.00 72.02 41.36 2127.59 2121.38 4735.37 4675.27 0.263 723898.73 5982207.30 n70 21 12.524 w148 10 54.1~ 6500.00 71.70 41.24 2163.28 2152.74 4750.93 4690.83 0.679 723929.02 5982243.91 n70 21 12.875 w148 10 53.2~ 6550.00 72.07 41.32 2199.00 2184.09 4766.48 4706.38 0.755 723959.30 5982280.53 n70 21 13.226 w148 10 52.2~ 6600.00 72.28 41.50 2234.70 2215.57 4781.79 4721.69 0.542 723989.71 5982317.15 n70 21 13.577 w148 10 51.32 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41 Date: 18:43, 06 Aug 98 Page: 5 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 6650.00 72.80 41.69 6700.00 72.77 41.90 6750.00 72.34 42.07 6800.00 71.97 42.14 6850.00 70.80 42.34 6900.00 69.97 42.45 6950.00 69.50 42.39 7000.00 69.13 42.43 7050.00 67.87 42.38 7100.00 68.25 42.29 7150.00 69.39 42.36 7200.00 70.20 42.30 7250.00 69.86 42.15 7300.00 70.82 42.11 7350.00 71.14 42.06 7400.00 71.97 42.02 7450.00 72.67 41.99 7500.00 71.93 41.77 7550.00 72.36 42.12 7600.00 72.21 43.06 7650.00 72.09 43.66 7700.00 72.16 44.34 7750.00 71.64 44.71 7800.00 72.11 45.05 7850.00 71.74 45.11 7900.00 71.54 45.29 7950.00 71.66 45.60 8000.00 71.74 45.79 8050.00 72.30 46.36 8100.00 72.00 46.86 8150.00 72.45 47.00 8200.00 72.58 46.95 8250.00 72.22 46.63 8300.00 72.35 46.78 8350.00 72.43 47.38 North (ft) 2270.37 2305.97 2341.43 2376.74 2411.82 2446.60 2481.23 2515.77 2550.12 2584.40 2618.87 2653.56 2688.36 2723.28 2758.36 2793.58 2828.98 2864.45 2899.85 2934.91 2969.51 3003.74 3037.63 3071.30 3104.86 3138.30 3171.59 3204.74 3237.73 3270.43 3302.94 3335.48 3368.11 3400.78 3433.23 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 2247.24 4796.79 4736.69 1.101 2279.07 4811.59 4751.49 0.406 2310.98 4826.57 4766.47 0.919 2342.89 4841.90 4781.80 0.752 2374.74 4857.86 4797.76 2.371 2406.50 4874.64 4814.54 1.673 2438.14 4891.96 4831.86 0.947 2469.68 4909.62 4849.52 0.744 2501.05 4927.95 4867.85 2.522 2532.29 4946.63 4886.53 0.778 2563.68 4964.69 4904.59 2.284 2595.28 4981.96 4921.86 1.624 2626.86 4999.04 4938.94 0.736 2658.45 5015.86 4955.76 1.921 2690.13 5032.15 4972.05 0.647 2721.89 5047.97 4987.87 1.662 2753.77 5063.16 5003.06 1.401 2785.57 5078.36 5018.26 1.538 2817.38 5093.69 5033.59 1.088 2849.61 5108.91 5048.81 1.816 2882.29 5124.23 5064.13 1.167 2915.34 5139.58 5079.48 1.302 2948.67 5155.11 5095.01 1.256 2982.20 5170.67 5110.57 1.141 3015.86 5186.18 5126.08 0.749 3049.53 5201.93 5141.83 0.526 3083.34 5217.71 5157.61 0.635 3117.31 5233.41 5173.31 0.395 3151.56 5248.85 5188.75 1.559 3186.15 5264.17 5204.07 1.125 3220.93 5279.44 5219.34 0.939 3255.79 5294.46 5234.36 0.277 3290.53 5309.58 5249.48 0.944 3325.20 5324.79 5264.69 0.386 3360.10 5339.92 5279.82 1.155 Easting (feet) 724020.30 724051.06 724081.91 724112.76 724143.56 724174.27 724204.87 724235.38 724265.72 724295.92 724326.28 724356.83 724387.37 724417.91 724448.54 724479.24 724510.06 724540.79 724571.54 724602.72 724634.35 724666.38 724698.69 724731.20 724763.85 724796.52 724829.32 724862.30 724895.56 724929.16 724962.96 724996.84 725030.60 725064.28 725098.20 Northing Latitude Longitud (feet) Deg Min Sec Deg Min SE 5982353.73 n70 21 13.928 w148 10 50.4~ 5982390.27 n70 21 14.278 w148 10 49.5] 5982426.65 n70 21 14.627 w148 10 48.5~ 5982462.89 n70 21 14.974 w148 10 47.65 5982498.89 n70 21 15.319 w148 10 46.7~ 5982534.60 n70 21 15.661 w148 10 45.7~ 5982570.15 n70 21 16.001 w148 10 44.8~ 5982605.60 n70 21 16.341 w148 10 43.9~ 5982640.86 n70 21 16.678 w148 10 43.0~ 5982676.05 n70 21 17.016 w148 10 42.1[ 5982711.44 n70 21 17.354 w148 10 41.1! 5982747.04 n70 21 17.695 w148 10 40.2' 5982782.76 n70 21 18.038 w148 10 39.3, 5982818.60 n70 21 18.381 w148 10 38.4~ 5982854.60 n70 21 18.726 w148 10 37.4! 5982890.75 n70 21 19.072 w148 10 36.5~ 5982927.07 n70 21 19.420 w148 10 35.61 5982963.46 n70 21 19.769 w148 10 34.71 5982999.79 n70 21 20.117 w148 10 33.7' 5983035.79 n70 21 20.462 w148 10 32.81 5983071.34 n70 21 20.802 w148 10 31.8' 5983106.53 n70 21 21.138 w148 10 30.9 5983141.39 n70 21 21.471 w148 10 29.9 5983176.03 n70 21 21.802 w148 10 28.9 5983210.58 n70 21 22.132 w148 10 27.9 5983245.00 n70 21 22.461 w148 10 26.9 5983279.27 n70 21 22.788 w148 10 25.9 5983313.41 n70 21 23.114 w148 10 25.0 5983347.40 n70 21 23.439 w148 10 24.0 5983381.11 n70 21 23.760 w148 10 22.9 5983414.63 n70 21 24.080 w148 10 21.9' 5983448.19 n70 21 24.400 w148 10 20.9 5983481.83 n70 21 24.720 w148 10 19.9 5983515.50 n70 21 25.041 w148 10 18.9 5983548.98 n70 21 25.360 w148 10 17.9 Operator: ARCO Field: Niakuk Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 8400.00 72.43 47.45 3465.49 3395.19 8450.00 71.98 47.26 3497.74 3430.21 8500.00 71.77 47.34 3529.96 3465.13 8550.00 72.32 47.47 3562.15 3500.15 8600.00 72.23 47.67 3594.29 3535.30 8650.00 72.86 48.19 3626.25 3570.71 8700.00 72.58 48.37 3658.02 3606.34 8750.00 72.41 48.45 3689.67 3642.01 8800.00 72.54 48.48 3721.29 3677.70 8850.00 72.40 48.32 3752.94 3713.35 8900.00 72.45 48.15 3784.69 3748.91 8950.00 72.08 48.13 3816.47 3784.37 9000.00 72.47 48.26 3848.22 3819.88 9050.00 72.63 48.41 3879.93 3855.51 9100.00 72.24 48.35 3911.59 3891.14 9150.00 72.22 48.21 3943.28 3926.68 9200.00 72.48 48.41 3974.96 3962.26 9250.00 72.50 48.69 4006.53 3998.00 9300.00 72.17 48.54 4038.03 4033.75 9350.00 71.91 48.30 4069.59 4069.33 9400.00 72.03 48.16 4101.26 4104.79 9450.00 72.24 48.13 4133.02 4140.23 9500.00 72.33 48.19 4164.79 4175.72 9550.00 72.77 48.40 4196.52 4211.33 9600.00 72.38 48.25. 4228.24 4246.96 9650.00 72.97 48.08 4260.08 4282.53 9700.00 72.95 47.85 4292.09 4318.03 9750.00 72.95 47.70 4324.21 4353.43 9800.00 73.06 47.81 4356.36 4388.83 9850.00 72.54 48.42 4388.25 4424.39 9900.00 72.77 48.66 4419.85 4460.15 9950.00 72.40 48.76 4451.33 4496.00 10000.00 72.31 48.74 4482.75 4531.82 10050.00 72.16 48.72 4514.15 4567.61 10100.00 71.94 49.21 4545.38 4603.49 Well Definition Survey Details Report Well: NK-41 Date: 18:43, 06 Aug 98 TVD(BRT) TVD(SS) DLS Easting (ft) (ft) (deg/100ft) (feet) 5355.01 5294.91 0.133 725132.33 5370.29 5310.19 0.970 725166.37 5385.85 5325.75 0.447 725200.33 5401.26 5341.16 1.127 725234.37 5416.48 5356.38 0.421 725268.56 5431.48 5371.38 1.604 725303.00 5446.33 5386.23 0.657 725337.68 5461.37 5401.27 0.373 725372.39 5476.43 5416.33 0.266 725407.13 5491.49 5431.39 0.414 725441.82 5506.59 5446.49 0.339 725476.42 5521.82 5461.72 0.741 725510.93 5537.04 5476.94 0.818 725545.48 5552.03 5491.93 0.429 725580.15 5567.12 5507.02 0.788 725614.84 5582.38 5522.28 0.270 725649.42 5597.54 5537.44 0.645 725684.05 5612.59 5552.49 0.536 725718.83 5627.76 5567.66 0.719 725753.63 5643.18 5583.08 0.692 725788.26 5658.65 5598.55 0.358 725822.76 5673.99 5613.89 0.424 725857.25 5689.21 5629.11 0.213 725891.78 5704.20 5644.10 0.967 725926.43 5719.17 5659.07 0.831 725961.11 5734.06 5673.96 1.224 725995.71 5748.71 5688.61 0.442 726030.25 5763.37 5703.27 0.287 726064.68 5777.99 5717.89 0.304 726099.11 5792.77 5732.67 1.562 726133.71 5807.68 5747.58 0.649 726168.53 5822.64 5762.54 0.764 726203.42 5837.80 5777.70 0.184 726238.30 5853.06 5792.96 0.302 726273.14 5868.47 5808.37 1.031 726308.08 Page: 6 Northing Latitude Longitud~ (feet) Deg Min Sec Deg Min Se, 5983582.25 n70 21 25.677 w148 10 16.871 5983615.53 n70 21 25.995 w148 10 15.85. 5983648.77 n70 21 26.311 w148 10 14.83 5983681.98 n70 21 26.628 w148 10 13.80 5983715.14 n70 21 26.944 w148 10 12.78 5983748.13 n70 21 27.258 w148 10 11.74 5983780.94 n70 21 27.570 w148 10 10.70 5983813.64 n70 21 27.881 w148 10 5983846.29 n70 21 28.192 w148 10 5983878.99 n70 21 28.503 w148 10 5983911.77 n70 21 28.815 w148 10 5983944.59 n70 21 29.128 w148 10 5983977.37 n70 21 29.440 w148 10 5984010.12 n70 21 29.751 w148 10 5984042.82 n70 21 30.062 w148 10 5984075.54 n70 21 30.374 w148 10 5984108.27 n70 21 30.685 w148 10 5984140.88 n70 21 30.996 w148 5984173.42 n70 21 31.305 w148 5984206.02 n70 21 31.615 w148 5984238.73 n70 21 31.927 w148 5984271.52 n70 21 32.239 w148 5984304.32 n70 21 32.551 w148 5984337.09 n70 21 32.863 w148 5984369.85 nT0 21 33.175 w148 5984402.73 n70 21 33.488 w148 5984435.77 n70 21 33.802 w148 5984468.93 n70 21 34.118 w148 5984502.11 n70 21 34.434 w148 5984535.03 n70 21 34.747 w148 5984567.68 n70 21 35.058 w148 5984600.20 n70 21 35.367 w148 5984632.67 n70 21 35.676 w148 5984665.12 n70 21 35.985 w148 5984697.39 n70 21 36.292 w148 9.66 8.61 7.57 6.53 5.49 4.45 3.41 2.37 1.33 0.29 9 59.24 9 58.20 9 57.16 9 56.12 9 55.0~ 9 54.04 9 53.0C 9 51.9~ 9 50.92 9 49.8~ 9 48.85 9 47.81 9 46.77 9 45.72 9 44.6~ 9 43.63 9 42.5~ 9 41.53 Well Definition Survey Details Report ~perator: ARCO Well: NK-41 Page: 7 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud, (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se, 10150.00 72.21 49.92 4576.24 4639.70 5883.85 5823.75 1.455 726343.36 5984729.30 n70 21 36.595 w148 9 40.47 10200.00 72.27 50.04 4606.86 4676.17 5899.11 5839.01 0.258 726378.90 5984760.99 nT0 21 36.896 w148 9 39.40 10250.00 72.32 50.06 4637.44 4712.68 5914.31 5854.21 0.107 726414.49 5984792.64 n70 21 37.196 w148 9 38.34 10300.00 72.72 50.20 4668.01 4749.29 5929.33 5869.23 0.843 726450.17 5984824.28 n70 21 37.497 w148 9 37.27 10350.00 72.36 50.10 4698.58 4785.90 5944.33 5884.23 0.745 726485.87 5984855.91 n70 21 37.797 wl~8 9 36.19 10400.00 72.92 50.14 4729.18 4822.52 5959.25 5899.15 1.123 726521.56 5984887.58 n70 21 38.098 w148 9 35.12 10450.00 72.41 50.15 4759.76 4859.16 5974.15 5914.05 1.020 726557.28 5984919.24 n70 21 38.399 w148 9 34.05 10500.00 72.46 50.26 4790.27 4895.79 5989.24 5929.14 0.232 726592.99 5984950.82 n70 21 38.698 wl~8 9 32.98 10550.00 72.46 50.47 4820.68 4932.51 6004.31 5944.21 0.400 726628.78 5984982.30 n70 21 38.997 w148 9 31.91 10600.00 72.02 50.43 4851.00 4969.22 6019.56 5959.46 0.883 726664.59 5985013.69 n70 21 39.295 w148 9 30.83 10650.00 72.43 50.39 4881.35 5005.91 6034.82 5974.72 0.824 726700.36 5985045.11 n70 21 39.593 w148 9 29.76 10700.00 72.76 50.39 4911.77 5042.67 6049.78 5989.68 0.660 726736.20 5985076.60 n70 21 39.892 w148 9 28.68 10750.00 72.91 50.49 4942.19 5079.50 6064.53 6004.43 0.356 726772.11 5985108.10 n70 21 40.191 w148 9 27.61 10800.00 72.98 50.60 4972.57 5116.41 6079.20 6019.10 0.253 726808.10 5985139.55 n70 21 40.490 wl~8 9 26.53 10850.00 72.60 50.95 5002.77 5153.41 6093.99 6033.89 1.012 726844.19 5985170.84 n70 21 40.787 w148 9 25.44 10900.00 72.60 51.18 5032.76 5190.52 6108.95 6048.85 0.439 726880.40 5985201.91 n70 21 41.081 wl~8 9 24.36 10950.00 73.37 51.37 5062.67 5227.82 6123.58 6063.48 1.582 726916.79 5985232.90 n70 21 41.375 w148 9 23.27 11000.00 73.80 51.29 5092.63 5265.27 6137.71 6077.61 0.874 726953.34 5985263.97 n70 21 41.670 w148 9 22.17 11050.00 73.30 50.47 5122.89 5302.47 6151.86 6091.76 1.864 726989.63 5985295.31 n70 21 41.967 wl~8 9 21.08 11100.00 72.90 50.35 5153.38 5339.34 6166.40 6106.30 0.832 727025.57 5985326.87 n70 21 42.266 w148 9 20.00 11150.00 73.77 50.76 5183.81 5376.33 6180.74 6120.64 1.909 727061.64 5985358.39 n70 21 42.565 w148 9 18.92 11200.00 74.29 51.34 5214.03 5413.71 6194.50 6134.40 1.525 727098.12 5985389.70 n70 21 42.862 w148 9 17.83 11250.00 74.40 51.61 5244.01 5451.38 6207.99 6147.89 0.565 727134.88 5985420.78 n70 21 43.157 w148 9 16.73 11300.00 73.80 51.62 5273.87 5489.07 6221.69 6161.59 1.200 727171.67 5985451.74 n70 21 43.450 w148 9 15.62 11350.00 73.64 51.88 5303.59 5526.76 6235.70 6175.60 0.593 727208.46 5985482.56 n70 21 43.742 w148 9 14.52 11400.00 74.53 51.97 5333.24 5564.61 6249.41 6189.31 1.788 727245.42 5985513.32 n70 21 44.034 w148 9 13.41 11450.00 74.77 52.11 5362.90 5602.63 6262.65 6202.55 0.551 727282.53 5985544.09 n70 21 44.325 w148 '9 12.3G 11500.00 75.29 52.13 5392.56 5640.75 6275.56 6215.46 1.041 727319.76 5985574.86 n70 21 44.617 w148 9 11.18 11550.00 75.14 52.41 5422.14 5678.99 6288.32 6228.22 0.619 727357.11 5985605.56 n70 21 44.907 w148 9 10.07 11600.00 74.57 52.68 5451.49 5717.30 6301.39 6241.29 1.254 727394.53 5985636.03 n70 21 45.196 w148 9 8.94 11650.00 74.50 52.83 5480.66 5755.66 6314.72 6254.62 0.321 727432.01 5985666.32 n70 21 45.482 w148 9 7.82 11700.00 74.28 52.81 5509.76 5794.03 6328.17 6268.07 0.442 727469.50 5985696.54 n70 21 45.768 w148 9 6.70 11750.00 74.58 52.61 5538.94 5832.35 6341.59 6281.49 0.713 727506.93 5985726.84 n70 21 46.055 w148 9 5.58 11800.00 73.94 52.10 5568.33 5870.46 6355.16 6295.06 1.613 727544.15 5985757.35 n70 21 46.344 w148 9 4.46 11850.00 74.24 51.99 5597.91 5908.37 6368.86 6308.76 0.636 727581.17 5985788.03 n70 21 46.634 w148 9 3.35 Well Definition Survey Details Report · Operator: ARCO Well: NK-41 Page: 8 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min SE 11900.00 74.07 52.32 5627.42 5946.36 6382.52 6322.42 0.720 727618.26 5985818.65 n70 21 46.924 w148 9 2.2~ 11950.00 73.90 52.37 5656.78 5984.40 6396.31 6336.21 0.353 727655.43 5985849.12 n70 21 47.212 w148 9 1.12 12000.00 73.98 52.44 5686.09 6022.47 6410.14 6350.04 0.209 727692.61 5985879.55 n70 21 47.500 w148 9 0.0~ 12050.00 73.79 52.79 5715.26 6060.64 6424.02 6363.92 0.772 727729.90 5985909.83 n70 21 47.787 w148 8 58.9( 12100.00 73.79 52.47 5744.40 6098.80 6437.98 6377.88 0.615 727767.17 5985940.09 n70 21 48.073 w148 8 57.7~ 12150.00 73.71 51.81 5773.86 6136.70 6451.97 6391.87 1.277 727804.18 5985970.65 n70 21 48.363 w148 8 56.6[ 12200.00 73.57 51.27 5803.70 6174.26 6466.05 6405.95 1.073 727840.85 5986001.59 n70 21 48.656 w148 8 55.57 12250.00 74.13 51.07 5833.81 6211.68 6479.96 6419.86 1.184 727877.35 5986032.80 n70 21 48.952 w148 8 54.4~ 12300.00 73.86 50.25 5864.28 6248.85 6493.75 6433.65 1.666 727913.60 5986064.35 n70 21 49.251 w148 8 53.3~ 12350.00 73.90 50.18 5895.01 6285.76 6507.63 6447.53 0.156 727949.58 5986096.16 n70 21 49.553 w148 8 52.3~ 12400.00 73.69 50.24 5925.74 6322.65 6521.58 6461.48 0.436 727985.55 5986127.97 n70 21 49.855 w148 8 51.22 12450.00 73.24 50.24 5956.40 6359.50 6535.81 6475.71 0.900 728021.47 5986159.70 n70 21 50.156 w148 8 50.15 12500.00 73.49 50.28 5987.03 6396.34 6550.13 6490.03 0.506 728057.39 5986191.40 n70 21 50.457 w148 8 49.0~ 12550.00 72.80 50.38 6017.57 6433.17 6564.63 6504.53 1.393 728093.30 5986223.03 n70 21 50.757 w148 8 48.0( 12600.00 72.51 50.71 6047.90 6470.02 6579.53 6519.43 0.856 728129.23 5986254.43 n70 21 51.055 w148 8 46.9~ 12650.00 72.62 51.10 6077.98 6507.04 6594.51 6534.41 0.776 728165.35 5986285.59 n70 21 51.351 w148 '8 45.8~ 12700.00 72.23 51.21 6107.88 6544.17 6609.61 6549.51 0.808 728201.57 5986316.58 n70 21 51.644 w148 8 44.7~ 12750.00 72.22 51.19 6137.71 6581.28 6624.88 6564.78 0.043 728237.77 5986347.49 n70 21 51.937 w148 8 43.6~ 12800.00 72.15 51.27 6167.52 6618.39 6640.17 6580.07 0.207 728273.99 5986378.39 n70 21 52.230 w148 8 42.5I 12850.00 71.61 51.15 6197.29 6655.43 6655.72 6595.62 1.104 728310.13 5986409.24 n70 21 52.523 w148 8 41.4! 12900 00 71.87 51.07 6227.10 6692.39 6671.39 6611.29 0.542 728346.18 5986440.13 n70 21 52.816 w148 8 40.4[ 12950 00 71.40 50.00 6257.26 6729.02 6687.14 6627.04 2.238 728381.91 5986471.36 n70 21 53.112 w148 8 39.3, 13000 00 71.63 49.38 6287.94 6765.18 6703.00 6642.90 1.263 728417.14 5986503.09 n70 21 53.413 w148 8 38.21 13050 00 71.71 49.59 6318.78 6801.26 6718.72 6658.62 0.430 728452.30 5986534.98 n70 21 53.716 w148 8 37.2~ 13100 00 71.50 49.13 6349.68 6837.27 6734.50 6674.40 0.969 728487.37 5986566.93 n70 21 54.020 w148 8 36.1' 13150 00 71.70 49.09 6380.73 6873.13 6750.28 6690.18 0.407 728522.30 5986599.03 n70 21 54.325 w148 8 35.1~ 13200.00 71.34 49.00 6411.82 6908.95 6766.13 6706.03 0.740 728557.17 5986631.16 n70 21 54.630 w148 8 34.0' 13250.00 71.29 49.04 6442.88 6944.70 6782.15 6722.05 0.125 728591.99 5986663.27 n70 21 54.935 w148 8 33.0[ 13300.00 71.00 48.85 6473.96 6980.38 6798.31 6738.21 0.682 728626.74 5986695.39 n70 21 55.241 w148 8 31.9t 13350.00 71.69 48.63 6505.20 7016.00 6814.30 6754.20 1.442 728661.41 5986727.67 n70 21 55.548 w148 8 30.9~ 13400.00 71.91 48.50 6536.63 7051.61 6829.92 6769.82 0.505 728696.07 5986760.14 n70 21 55.856 w148 8 29.9( 13450.00 71.46 48.65 6568.04 7087.20 6845.63 6785.53 0.944 728730.71 5986792.58 n70 21 56.165 w148 8 28.8~ 13500.00 71.71 48.74 6599.35 7122.83 6861.42 6801.32 0.528 728765.41 5986824.94 n70 21 56.473 w148 8 27.8~ 13550.00 72.13 48.85 6630.66 7158.60 6876.94 6816.84 0.866 728800.22 5986857.29 n70 21 56.780 w148 8 26.7' 13600.00 72.23 48.78 6662.01 7194.42 6892.24 6832.14 0.240 728835.10 5986889.68 n70 21 57.088 w148 8 25.7~ Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 9 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se 13650.00 72.14 48.86 6693.35 7230.25 6907.54 6847.44 0.236 728869.98 5986922.07 nT0 21 57.396 w148 8 24.67 13700.00 72.28 48.86 6724.67 7266.10 6922.82 6862.72 0.280 728904.89 5986954.44 n70 21 57.704 w148 8 23.62 13750.00 72.99 49.05 6756.01 7302.09 6937.74 6877.64 1.466 728939.94 5986986.82 n70 21 58.012 wl~8 8 22.56 13800.00 72.60 49.01 6787.32 7338.16 6952.53 6892.43 0.784 728975.06 5987019.19 n70 21 58.319 wl~8 8 21.51 13850.00 72.45 48.98 6818.61 7374.15 6967.54 6907.44 0.305 729010.11 5987051.53 n70 21 58.627 w148 8 20.46 13900.00 72.06 48.95 6849.88 7410.07 6982.78 6922.68 0.782 729045.08 5987083.85 n70 21 58.934 w148 8 19.40 13950.00 71.73 48.96 6881.09 7445.91 6998.32 6938.22 0.660 729079.99 5987116.10 n70 21 59.240 w148 8 18.35 14000.00 71.93 49.35 6912.16 7481.85 7013.91 6953.81 0.842 729114.99 5987148.22 n70 21 59.546 w148 8 17.30 14050.00 72.27 49.76 6943.02 7518.06 7029.28 6969.18 1.035 729150.27 5987180.14 n70 21 59.849 w148 8 16.24 14100.00 72.28 49.72 6973.80 7554.40 7044.50 6984.40 0.079 729185.68 5987211.98 n70 22 0.151 w148 8 15.18 14150.00 71.97 49.98 7004.48 7590.78 7059.85 6999.75 0.793 729221.13 5987243.72 n70 22 0.453 w148 8 14.11 14200.00 72.31 50.31 7034.98 7627.31 7075.18 7015.08 0.926 729256.74 5987275.29 n70 22 0.752 w148 8 13.04 14250.00 72.72 50.55 7065.36 7664.07 7090.21 7030.11 0.939 729292.59 5987306.74 n70 22 1.051 w148 8 11.97 14300.00 72.21 50.54 7095.66 7700.88 7105.27 7045.17 1.020 729328.48 5987338.11 n70 22 1.348 w148 8 10.8S 14350.00 72.15 50.33 7125.98 7737.58 7120.57 7060.47 0.417 729364.26 5987369.50 n70 22 1.646 w148 8 9.8~ 14400.00 71.86 50.42 7156.31 7774.21 7136.02 7075.92 0.605 729399.98 5987400.90 n70 22 1.944 w148 8 8.74 14450.00 72.03 50.43 7186.59 7810.85 7151.52 7091.42 0.341 729435.70 5987432.26 n70 22 2.241 w148 8 7.65 14500.00 72.77 50.62 7216.89 7847.64 7166.63 7106.53 1.524 729471.58 5987463.63 n70 22 2.539 w148 8 6.6( 14550.00 72.25 50.74 7247.11 7884.53 7181.66 7121.56 1.065 729507.56 5987494.93 n70 22 2.836 w148 8 5.52 14600.00 72.32 50.94 7277.18 7921.46 7196.88 7136.78 0.406 729543.58 5987526.08 n70 22 3.131 w148 8 14650.00 72.08 50.98 7307.17 7958.44 7212.16 7152.06 0.486 729579.65 5987557.15 n70 22 3.426 w148 8 3.3~ 14700.00 71.81 50.96 7337.11 7995.36 7227.66 7167.56 0.541 729615.68 5987588.16 n70 22 3.720 w148 8 2.2~ 14750.00 72.07 51.09 7367.01 8032.32 7243.16 7183.06 0.576 729651.73 5987619.14 n70 22 4.013 w148 8 1.1[ 14800.00 71.57 51.38 7396.75 8069.36 7258.76 7198.66 1.142 729687.87 5987649.97 n70 22 4.305 w148 8 0.1( 14850.00 72.20 51.37 7426.41 8106.49 7274.30 7214.20 1.260 729724.10 ' 5987680.71 n70 22 4.597 w148 7 59.0~ 14900.00 72.56 51.75 7456.04 8143.81 7289.44 7229.34 1.021 729760.53 5987711.43 n70 22 4.888 w148 7 57.9~ 14950.00 72.10 51.87 7485.49 8181.26 7304.62 7244.52 0.948 729797.09 5987741.98 n70 22 5.177 w148 7 56.82 15000.00 72.54 51.91 7514.90 8218.74 7319.80 7259.70 ~. 0.883 729833.68 5987772.48 n70 22 5.466 w148 7 55.7~ 15050.00 72.50 51.81 7544.35 8256.25 7334.82 7274.72 0.207 729870.30 5987803.03 n70 22 5.755 w148 7 54.62 15100.00 72.18 51 89 7573.78 8293.71 7349.99 7289.89 0 658 729906.88 5987833.55 n70 22 6.044 w148 7 53.5~ 15150.00 72.12 52 42 7602.98 8331.30 7365.31 7305.21 1 016 729943.58 5987863.85 n70 22 6.331 w148 7 52.4~ 15200.00 72.39 52 51 7631.99 8369.06 7380.55 7320.45 0 567 729980.46 5987893.97 n70 22 6.616 w148 7 51.32 15250.00 72.97 52 78 7660.95 8407.00 7395.44 7335.34 1 269 730017.53 5987924.04 n70 22 6.900 w148 7 50.2~ 15300.00 72.93 52 93 7689.82 8445.11 7410.10 7350.00 0 298 730054.76 5987954.01 n70 22 7.184 w148 7 49.1( 15350.00 72.57 53 16 7718.53 8483.26 7424.93 7364.83 0 843 730092.05 5987983.84 n70 22 7.466 w148 7 47.9~ Operator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41 Date: 18:43, 06 Aug 98 Page: 10 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 15400.00 72.96 53.28 7747.12 8521.51 15450.00 72.30 53.45 7775.59 8559.81 15500.00 71.96 53.52 7803.91 8598.05 15550.00 71.80 53.58 7832.14 8636.28 15600.00 71.82 53.36 7860.42 8674.45 15650.00 72.39 53.11 7888.90 8712.56 15700.00 72.51 52.85 7917.60 8750.63 15750.00 72.53 52.76 7946.43 8788.62 15800.00 72.30 52.77 7975.27 8826.56 15850.00 72.20 52.70 8004.11 8864.46 15900.00 72.59 51.86 8033.26 8902.16 15950.00 72.48 51.12 8062.96 8939.48 16000.00 72.50 51.22 8092.86 8976.63 16050.00 72.51 51.24 8122.72 9013.81 16100.00 72.36 51.19 8152.58 9050.96 16150.00 72.52 50.97 8182.53 9088.05 16200.00 72.07 50.75 8212.59 9124.99 16250.00 72.15 50.69 8242.72 9161.83 16300.00 71.92 50.53 8272.90 9198.58 16350.00 72.20 50.47 8303.16 9235.29 16400.00 72.65 50.39 8333.52 9272.03 16450.00 72.37 50.26 8363.97 9308.74 16500.00 72.65 50.22 8394.47 9345.40 16550.00 72.82 50.04 8425.08 9382.04 16600.00 73.02 49.99 8455.79 9418.66 16650.00 73.02 49.91 8486.56 9455.27 16700.00 72.74 49.81 8517.36 9491.80 16750.00 72.84 49.67 8548.23 9528.25 16800.00 72.58 49.59 8579.15 9564.62 16850.00 72.25 49.77 8609.99 9600.96 16900.00 72.33 49.73 8640.77 9637.31 16950.00 72.48 50.26 8671.41 9673.82 17000.00 72.52 50.26 8701.89 9710.49 17050.00 72.92 50.32 8732.40 9747.22 17100.00 72.66 50.34 8762.89 9783.98 TVD(BRT) TVD(SS) DLS Easting (ft) (ft) (deg/100ft) (feet) 7439.74 7379.64 0.813 730129.43 7454.67 7394.57 1.359 730166.87 7470.01 7409.91 0.693 730204.26 7485.56 7425.46 0.340 730241.63 7501.17 7441.07 0.420 730278.94 7516.53 7456.43 1.235 730316.19 7531.61 7471.51 0.551 730353.39 7546.63 7486.53 0.176 730390.51 7561.73 7501.63 0.460 730427.58 7576.98 7516.88 0.240 730464.61 7592.10 7532.00 1.781 730501.43 7607.11 7547.01 1.429 730537.85 7622.15 7562.05 0.195 730574.09 7637.18 7577.08 0.043 730610.37 7652.27 7592.17 0.315 730646.63 7667.36 7607.26 0.528 730682.81 7682.56 7622.46 0.993 730718.85 7697.92 7637.82 0.197 730754.77 7713.34 7653.24 0.552 730790.62 7728.74 7668.64 0.572 730826.41 7743.84 7683.74 0.913 730862.23 7758.87 7698.77 0.612 730898.02 7773.90 7713.80 0.565 730933.76 7788.74 7728.64 0.484 730969.48 7803.42 7743.32 0.411 731005.17 7818.02 7757.92 0.153 731040.85 7832.74 7772.64 0.592 731076.45 7847.54 7787.44 0.334 731111.97 7862.40 7802.30 0.542 731147.41 7877.50 7817.40 0.744 731182.82 7892.71 7832.61 0.177 731218.24 7907.83 7847.73 1.054 731253.83 7922.86 7862.76 0.080 731289.57 7937.71 7877.61 0.808 731325.38 7952.51 7892.41 0.521 731361.22 Northing (feet) Deg Min 5988013.55 n70 22 5988043.14 n70 22 5988072.58 n70 22 5988101.93 n70 22 5988131.32 n70 22 5988160.91 n70 22 5988190.73 n70 22 5988220.67 n70 22 5988250.62 n70 22 Latitude Longitud Sec Deg Min Se 7.746 w148 7 46.87 8.026 w148 7 45.75 8.304 w148 7 44.63 8.581 w148 7 43.51 8.859 w148 7 42.3~ 9.139 w148 7 41.25 9.420 w148 7 40.1~ 9.703 w148 7 39.05 9.987 w148 7 37.9~ 5988280.56 n70 22 10.270 w148 5988310.82 n70 22 10.556 w148 5988341.61 n70 22 10.848 w148 5988372.59 n70 22 11.141 w148 5988403.54 n70 22 11.435 w148 5988434.48 n70 22 11.728 w148 5988465.51 n70 22 12.022 w148 5988496.66 n70 22 12.317 w148 5988527.86 n70 22 12.613 w148 5988559.12 n70 22 12.909 w148 5988590.45 n70 22 13.206 w148 5988621.88 n70 22 13.505 w148 5988653.40 n70 22 13.804 w148 5988684.97 n70 22 14.103 w148 5988716.65 n70 22 14.404 w148 5988748.43 n70 22 14.705 w148 5988780.27 n70 22 15.007 w148 5988812.14 n70 22 15.310 w148 5988844.07 n70 22 15.613 w148 5988876.05 n70 22 15.917 w148 5988907.96 n70 22 16.220 w148 5988939.79 n70 22 16.522 w148 5988971.50 n70 22 16.823 w148 5989003.05 n70 22 17.122 w148 5989034.63 n70 22 17.422 w148 5989066.19 n70 22 17.721 w148 36.82 35.72 34.6: 33.5~. 32.45 31.3[ 30.2I 29.2( 28.1~ 27 . 0, 25.9' 24.8! 23.8~, 22.7, 21.6' 20.6, 19.5'. 18.4, 17.3', 16.3~ 15.2 14.2 13.1 12.0 10.9 9.9t Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 11 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/lOOft) (feet) (feet) Deg Min Sec Deg Min Se 17150.00 72.72 50.26 8793.38 9820.71 7967.38 7907.28 0.194 731397.03 5989097.75 n70 22 18.020 w148 7 8.82 17200.00 72.35 50.14 8823.91 9857.35 7982.39 7922.29 0.775 731432.75 5989129.35 n70 22 18.320 w148 7 7.75 17250.00 72.38 50.16 8854.44 9893.93 7997.54 7937.44 0.071 731468.41 5989160.96 n70 22 18.620 w148 7 6.68 17300.00 72.40 50.01 8885.02 9930.49 8012.66 7952.56 0.289 731504.04 5989192.60 n70 22 18.920 w148 7 5.61 17350.00 72.16 50.04 8915.62 9966.99 8027.88 7967.78 0.483 731539.62 5989224.27 n70 22 19.221 w148 7 4.54 17400.00 72.48 49.98 8946.23 10003.48 8043.07 7982.97 0.650 731575.19 5989255.95 n70 22 19.521 w148 7 3.47 17450.00 72.11 49.95 8976.87 10039.95 8058.27 7998.17 0.742 731610.74 5989287.65 n70 22 19.822 w148 7 2.4C 17500.00 72.43 49.97 9007.51 10076.41 8073.50 8013.40 0.641 731646.28 5989319.35 n70 22 20.123 w148 7 1.34 17550.00 71.92 49.95 9038.13 10112.86 8088.81 8028.71 1.021 731681.79 5989351.04 n70 22 20.424 w148 7 0.27 17600.00 72.12 50.01 9068.71 10149.28 8104.24 8044.14 0.416 731717.29 5989382.68 n70 22 20.724 w148 6 59.2C 17650.00 71.76 50.02 9099.26 10185.70 8119.74 8059.64 0.720 731752.79 5989414.29 n70 22 21.024 w148 6 58.13 17687.10 71.25 49.50 9121.99 10212.56 8131.51 8071.41 1.912 731778.97 5989437.81 n70 22 21.247 w148 6 57.35 17698.20 71.50 49.30 9128.83 10220.54 8135.05 8074.95 2.826 731786.75 5989444.88 n70 22 21.314 w148 6 57.11 17781.80 70.86 48.40 9180.90 10280.13 8162.02 8101.92 1.275 731844.76 5989498.69 n70 22 21.825 w148 6 55.37 17812.30 71.62 47.40 9200.26 10301.56 8171.83 8111.73 3.981 731865.60 5989518.68 n70 22 22.016 w148 6 54.74 17905.60 73.20 45.90 9261.32 10366.22 8200.03 8139.93 2.284 731928.43 5989581.61 n70 22 22.615 w148 6 52.85 17998.70 74.24 42.40 9325.43 10428.45 8226.14 8166.04 3.778 731988.73 5989647.54 n70 22 23.245 w148 6 51.02 18092.60 75.93 38.50 9394.47 10487.30 8250.31 8190.21 4.398 732045.50 5989718.29 n70 22 23.923 w148 6 49.3f 18187.30 78.50 38.30 9466.84 10544.65 8271.27 8211.17 2.722 732100.69 5989792.32 n70 22 24.634 w148 6 47.62 18280.80 78.85 37.90 9538.99 10601.22 8289.63 8229.53 0.562 732155.10 5989866.10 n70 22 25.343 w148 6 45.9~ 18375.90 80.80 35.90 9613.83 10657.42 8306.43 8246.33 2.914 732209.05 5989942.58 n70 22 26.078 w148 6 44.33 18468.70 82.67 33.80 9689.19 10709.88 8319.77 8259.67 3.012 732259.26 5990019.46 n70 22 26.818 w148 6 42.75 18561.60 84.77 32.00 9766.72 10760.04 8329.93 8269.83 2.970 732307.09 5990098.43 n70 22 27.580 w148 6 41.3f 18654.00 85.23 31.90 9844.82 10808.75 8337.99 8277.89 0.509 732353.47 5990177.94 n70 22 28.348 w148 6 39.8~ 18746.00 85.40 32.00 9922.63 10857.27 8345.50 8285.40 0.214 732399.66 5990257.14 n70 22 29.112 w148 6 38.4~ 18842.40 84.63 32.20 10003.98 10908.30 8353.88 8293.78 0.825 732448.26 5990339.96 n70 22 29.912 w148 6 36.9~ 18936.50 84.74 32.30 10083.22 10958.30 8362.59 8302.49 0.158 732495.89 5990420.65 n70 22 30.690 w148 6 35.4~ 19029.50 84.54 32.50 10161.40 11007.91 8371.28 8311.18 0.303 732543.17 5990500.26 n70 22 31.458 w148 6 34.02 19120.70 84.42 32.90 10237.79 11056.95 8380.05 8319.95 0.456 732589.92 5990578.06 n70 22 32.209 w148 6 32.6( 19215.90 84.77 32.10 10317.72 11107.87 8389.02 8328.92 0.914 732638.46 5990659.46 n70 22 32.994 w148 6 31.1( 19308.80 84.71 32.20 10396.05 11157.10 8397.54 8337.44 0.125 732685.34 5990739.20 n70 22 33.764 w148 6 29.6~ 19402.20 85.14 33.00 10474.42 11207.23 8405.80 8345.70 0.969 732733.12 5990819.03 n70 22 34.534 w148 6 28.1~ 19498.30 85.54 32.60 10554.93 11259.11 8413.61 8353.51 0.588 732782.60 5990901.03 n70 22 35.325 w148 6 26.65 19592.10 85.89 33.90 10633.16 11310.40 8420.62 8360.52 1.432 732831.54 5990980.74 n70 22 36.093 w148 6 25.1~ 19685.30 85.88 32.60 10710.89 11361.36 8427.30 8367.20 1.391 732880.19 5991059.95 n70 22 36.857 w148 6 23.65 Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 12 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se 19776.96 85.17 30.80 10788.64 11409.38 8434.46 8374.36 2.105 732925.88 5991139.07 n70 22 37.621 w148 6 22.26 19873.30 85.14 31.20 10870.92 11458.82 8442.59 8382.49 0.415 732972.86 5991222.78 n70 22 38.430 w148 6 20.81 19966.30 85.28 31.60 10950.03 11507.11 8450.36 8390.26 0.454 733018.78 5991303.27 n70 22 39.207 w148 6 19.39 20059.80 84.82 31.60 11029.36 11555.92 8458.43 8398.33 0.492 733065.22 5991384.02 n70 22 39.986 w148 6 17.96 20157.73 84.80 30.40 11112.96 11606.15 8467.29 8407.19 1.221 733112.95 5991469.06 n70 22 40.808 w148 6 16.49 20250.20 84.88 30.60 11192.31 11652.89 8475.60 8415.50 0.232 733157.32 5991549.76 n70 22 41.587 w148 6 15.11 20343.00 84.82 29.30 11272.39 11699.03 8483.93 8423.83 1.397 733201.07 5991631.17 n70 22 42.374 w148 6 13.7~ 20437.70 85.26 30.80 11354.06 11746.27 8492.12 8432.02 1.645 733245.87 5991714.19 n70 22 43.177 w148 6 12.35 20531.90 85.60 31.10 11434.59 11794.57 8499.63 8439.53 0.481 733291.76 5991796.11 n70 22 43.968 w148 6 10.9~ 20625.00 85.83 31.10 11514.08 11842.52 8506.58 8446.48 0.247 733337.33 5991876.99 n70 22 44.749 w148 6 9.55 20723.60 85.83 30.80 11598.42 11893.09 8513.75 8453.65 0.303 733385.39 5991962.78 n70 22 45.578 w148 6 8.05 20818.70 84.65 29.50 11680.37 11940.69 8521.64 8461.54 1.843 733430.54 5992046.10 n70 22 46.383 w148 6 6.65 20910.60 84.88 30.30 11759.70 11986.31 8530.03 8469.93 0.902 733473.79 5992126.74 n70 22 47.162 w148 6 5.32 20996.70 85.08 30.90 11833.53 12029.97 8537.56 8477.46 0.732 733515.24 5992201.82 n70 22 47.888 w148 6 4.05 21089.70 83.22 30.06 11913.25 12076.90 8547.04 8486.94 2.193 733559.79 5992282.90 n70 22 48.671 w148 6 2.65 21181.80 80.54 28.30 11992.84 12121.35 8560.05 8499.95 3.471 733601.86 5992363.77 n70 22 49.453 w148 6 1.3~ 21275.10 78.59 27.70 12073.86 12164.43 8576.95 8516.85 2.184 733642.52 5992446.02 n70 22 50.249 w148 6 0.1( 21371.00 76.80 28.80 12156.39 12208.77 8597.39 8537.29 2.177 733684.40 5992529.82 n70 22 51.060 w148 5 58.8( 21463.50 73.56 28.00 12235.04 12251.30 8621.04 8560.94 3.601 733724.58 5992609.69 n70 22 51.833 w148 5 57.5! 21558.80 71.65 27.10 12315.66 12293.36 8649.53 8589.43 2.197 733764.23 5992691.52 n70 22 52.625 w148 5 56.3~ 21653.30 69.74 27.60 12394.87 12334.34 8680.77 8620.67 2.082 733802.84 5992771.91 n70 22 53.404 w148 5 55.1~ 21745.40 66.35 27.10 12470.73 12373.58 8715.20 8655.10 3.715 733839.82 5992848.89 n70 22 54.149 w148 5 53.9~ 21840.50 63.35 27.00 12547.39 12412.72 8755.62 8695.52 3.156 733876.68 5992926.67 n70 22 54.902 w148 5 52.8[ 21935.90 59.35 26.60 12622.10 12450.47 8801.35 8741.25 4.209 733912.19 5993002.46 n70 22 55.636 w148 5 51.71 22026.60 55.29 26.80 12690.29 1.2484.76 8850.31 8790.21 .~" ~.480'> 733944.45 5993071.63 n70 22 56.306 w148 5 50.7~ 22122.40 53.72 26.40 12760.03 12519.68 8905.93 8845.83 1.674 733977.29 5993142.37 n70 22 56.992 w148 5 49.6' 22216.20 51.49 24.80 12827.22 12551.89 8962.90 8902.80 2.736 734007.50 5993210.48 n70 22 57.652 w148 5 48.71 22311.20 49.85 24.40 12894.03 12582.48 9023.10 8963.00 1.757 734036.10 5993278.17 n70 22 58.308 w148 5 47.8[ 22403.10 48.30 23.80 12957.41 12610.84 9083.30 9023.20 1.757 734062.56 5993342.35 n70 22 58.931 w148 5 46.9! 22499.10 46.61 23.50 13022.19 12639.21 9148.21 9088.11 1.775 734089.00 5993407.95 n70 22 59.568 w148 5 46.1~ 22593.90 44.89 22.80 13084.62 12665.91 9214.36 9154.26 1.890 734113.84 5993471.14 n70 23 0.182 w148 5 45.3t 22689.00 42.64 22.40 13145.35 12691.20 9283.04 9222.94 2.384 734137.32 5993532.58 n70 23 0.778 w148 5 44.6[ 22784.00 39.72 22.50 13203.15 12715.08 9354.53 9294.43 3.074 734159.48 5993591.06 n70 23 1.346 w148 5 43.9[ 22880.30 37.60 20.80 13259.05 12737.29 9429.73 9369.63 2.462 734180.02 5993647.59 n70 23 1.896 w148 5 43.2t 22973.20 35.50 20.40 13310.83 12756.76 9504.35 9444.25 2.275 734197.95 5993699.93 n70 23 2.405 w148 5 42.7( Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 13 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se 23069.50 33.83 20.60 13362.14 12775.94 9583.56 9523.46 1.738 734215.60 5993751.77 n70 23 2.909 w148 5 42.14 23742.00 21.58 20.60 13654.25 12885.73 10177.82 10117.72 1.822 734316.70 5994046.99 n70 23 5.780 w148 5 38.91 Operator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41PB1 Date: 20:19, 06 Aug 98 DEFINITIVE WDF : Yes Description : Final Definitive Survey Associated wellbore : Current Created/Updated By delappcs on 15:21, 04 Feb Facility Details : Actual Location Coordinates Longitude Latitude 70 deg 21 min 5.879 sec N WDF type : Composite 148 deg 15 min 27.984 sec W Eastings 714553.260 feet Northings 5981257.790 feet Geodetic Datum NAD27AFT Mapping Projection TMALSK4F Grid data at Well Reference Point : Convergence 1.696226 deg Scale Factor 0.999956 Tie In Details Tie In Type : Well Reference Coordinates MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 40.70 0.000 0.000 0.00 0.00 TVD (ft) 40.70 Concatenation of survey stations Number of Survey Points : 363 End Depth : 20613.00 ft Extrapolation to TD - average build rate : - average walk rate : 0.000 deg/100ft 0.000 deg/100ft Survey Composition Details Survey Description Gyrodata drillpipe multishot -continuous MWD - Standard (input as multishot) Start Depth (ft) 100.00 17687.10 End Depth (ft) 17650.00 20613.00 Ail Depths are relative to BRT on rig POOL 7 Ail Azimuths are relative to TRUE North ORIGINAL Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB1 Date: 20:19, 06 Aug 98 Page: 2 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 40.70 0.00 0.00 100.00 0.27 312.90 200.00 0.08 60.42 300.00 0.23 165.55 400.00 0.25 285.22 500.00 0.19 313.96 599.00 0.14 102.51 699.00 0.28 246.75 799.00 0.14 348.96 903.00 0.16 90.67 1000.00 0.22 242.90 1101.00 0.26 339.33 1200.00 0.23 7.88 1308.00 0.25 4.38 1399.00 0.28 27.01 1500.00 0.29 28.71 1599.00 0.27 348.18 1700.00 0.32 357.94 1805.00 0.77 40.76 1904.00 1.82 48.86 2006.00 3.58 43.77 2106.00 5.30 39.20 2206.00 6.41 39.83 2306.00 7.80 43.99 2406.00 8.34 45.17 2506.00 11.05 46.67 2606.00 13.47 46.16 2706.00 15.30 47.25 2756.00 16.58 47.40 2756.00 16.58 48.38 2800.00 17.51 48.62 2850.00 17.93 49.17 2900.00 18.69 49.70 2950.00 19.13 51.56 3000.00 20.35 52.35 North (ft) 0.00 0.10 0.29 0.13 -0.01 0.17 0.25 0.13 0.15 0.28 0.19 0.32 0.72 1.17 1.57 2.01 2.46 2.98 3.80 5.33 8.70 14.53 22.39 31.56 41.56 53.25 67.90 84.92 94.23 94.23 102.77 112.78 122.99 133.26 143.66 East TVD(BRT) TVD(SS) (ft) 0.00 -0.10 -0.21 -0.10 -0.26 -0.59 -0.59 -0.70 -0.95 -0.83 -0.86 -1.11 1101.00 1040.90 -1.16 1200.00 1139.90 -1.11 1307.99 1247.89 -1.00 1398.99 1338.89 -0.76 1499.99 1439.89 -0.69 1598.99 1538.89 -0.75 1699.99 1639.89 -0.30 1804.98 1744.88 1.31 1903.96 1843.86 4.73 2005.84 1945.74 9.81 2105.54 2045.44 16.30 2205.02 2144.92 24.59 2304.25 2244.15 34.45 2403.25 2343.15 46.57 2501.82 2441.72 61.94 2599.53 2539.43 80.03 2696.39 2636.29 90.13 2744.47 2684.37 90.13 2744.47 2684.37 99.79 2786.53 2726.43 111.25 2834.16 2774.06 123.18 2881.63 2821.53 135.71 2928.93 2868.83 149.01 2975.99 2915.89 DLS (ft) (ft) (deg/100ft) 40.70 -19.40 0.000 100.00 39.90 0.455 200.00 139.90 0.304 300.00 239.90 0.262 400.00 339.90 0.415 500.00 439.90 0.124 599.00 538.90 0.321 699.00 638.90 0.402 799.00 738.90 0.338 903.00 842.90 0.224 1000.00 939.90 0.381 0.355 0.126 0.023 0.119 0.013 0.197 0.070 0.547 1.075 1.740 1.756 1.114 1.479 0.572 2.716 2.424 1.845 2.579 0.000 2.106 0.898 1.563 1.487 2.508 Easting (feet) 721841.36 721841.25 721841.13 721841.25 721841.09 721840.76 721840.75 721840.65 721840.40 721840.52 721840.49 721840.24 721840.17 721840.21 721840.31 721840.53 721840.59 721840.52 721840.94 721842.51 721845.83 721850.73 721856.99 721865.00 721874.56 721886.32 721901.26 721918.83 721928.65 721928.65 721938.05 721949.22 721960.84 721973.06 721986.04 Northing Latitude Longitude (feet) Deg Min Sec Deg Min Sec 5980017.95 n70 20 51.603 w148 11 56.135 5980018.04 n70 20 51.603 w148 11 56.138 5980018.24 n70 20 51.605 w148 11 56.141 5980018.08 n70 20 51.604 w148 11 56.138 5980017.94 n70 20 51.602 w148 11 56.142 5980018.10 n70 20 51.604 w148 11 56.152 5980018.19 n70 20 51.605 w148 11 56.152 5980018.06 n70 20 51.604 w148 11 56.155 5980018.08 n70 20 51.604 w148 11 56.162 5980018.20 n70 20 51.605 w148 11 56.159 5980018.12 n70 20 51.604 w148 11 56.160 5980018.24 n70 20 51.606 w148 11 56.167 5980018.64 n70 20 51.610 w148 11 56.169 5980019.09 n70 20 51.614 w148 11 56.167 5980019.49 n70 20 51.618 w148 11 56.164 5980019.94 n70 20 51.622 w148 11 56.157 5980020.39 n70 20 51.627 w148 11 56.155 5980020.91 n70 20 51.632 w148 11 56.157 5980021.74 n70 20 51.640 w148 11 56.143 5980023.32 n70 20 51.655 w148 11 56.096 5980026.78 n70 20 51.688 w148 11 55.996 5980032.76 n70 20 51.745 w148 11 55.848 5980040.82 n70 20 51.823 w148 11 55.658 5980050.22 n70 20 51.913 w148 11 55.416 5980060.51 n70 20 52.011 w148 11 55.128 5980072.56 n70 20 52.126'w148 11 54.774 5980087.65 n70 20 52.270 w148 11 54.325 5980105.20 n70 20 52.438 w148 11 53.796 5980114.80 n70 20 52.529 w148 11 53.501 5980114.80 n70 20 52.529 w148 11 53.501 5980123.63 n70 20 52.613 w148 11 53.219 5980133.97 n70 20 52.712 w148 11 52.884 5980144.53 n70 20 52.812 w148 11 52.535 5980155.17 n70 20 52.913 w148 11 52.169 5980165.96 n70 20 53.015 w148 11 51.780 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Description : Final Definitive Survey Well: NK-41PB1 Date: 20:19, 06 Aug 98 Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 3050.00 22.14 51.84 3100.00 24.16 49.92 3150.00 25.60 48.74 3200.00 27.01 47.19 3250.00 27.96 46.01 3300.00 29.01 45.49 3350.00 29.71 45.30 3400.00 31.06 45.67 3450.00 32.54 47.27 3500.00 33.82 48.70 3550.00 35.60 49.93 3600.00 37.19 51.11 3650.00 38.38 51.42 3700.00 39.92 51.27 3750.00 41.03 50.68 3800.00 42.52 50.12 3850.00 43.76 49.62 3900.00 45.01 49.19 3950.00 46.10 48.99 4000.00 47.23 48.21 4050.00 48.99 47.22 4100.00 50.38 46.43 4150.00 52.03 46.18 4200.00 53.64 46.07 4250.00 55.44 46.06 4300.00 57.17 46.09 4350.00 58.10 46.25 4400.00 58.46 46.54 4450.00 59.14 46.70 4500.00 60.35 46.53 4550.00 61.99 46.40 4600.00 63.16 45.98 4650.00 64.45 45.44 4700.00 65.85 45.07 4750.00 66.99 44.66 North (ft) 154.80 167.21 180.92 195.76 211.62 228.26 245.48 263.20 281.34 299.65 318.21 337.06 356.23 375.95 396.38 417.62 439.66 462.42 485.80 509.85 534.90 560.98 587.90 615.52 643.77 672.63 701.87 731.21 760.58 790.25 820.42 851.14 882.47 914.41 946.89 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 163.31 3022.59 2962.49 3.593 178.55 3068.57 3008.47 4.320 194.50 3113.92 3053.82 3.048 210.95 3158.75 3098.65 3.128 227.71 3203.10 3143.00 2.193 244.79 3247.05 3186.95 2.157 262.24 3290.63 3230.53 1.420 280.28 3333.76 3273.66 2.714 299.39 3376.25 3316.15 3.418 319.72 3418.10 3358.00 2.999 341.31 3459.20 3399.10 3.813 364.21 3499.45 3439.35 3.473 388.11 3538.96 3478.86 2.415 412.76 3577.74 3517.64 3.084 437.97 3615.77 3555.67 2.366 463.64 3653.06 3592.96 3.065 489.77 3689.54 3629.44 2.576 516.33 3725.27 3665.17 2.575 543.31 3760.28 3700.18 2.199 570.59 3794.59 3734.49 2.528 598.12 3827.97 3767.87 3.806 625.92 3860.32 3800.22 3.030 654.10 3891.64 3831.54 3.319 682.82 3921.85 3861.75 3.221 712.15 3950.86 3890.76 3.598 742.11 3978.60 3918.50 3.468 772.57 4005.36 3945.26 1.880 803.37 4031.65 3971.55 0.873 834.45 4057.55 3997.45 1.395 865.84 4082.74 4022.64 2.427 897.59 4106.85 4046.75 3.285 929.62 4129.88 4069.78 2.475 961.73 4151.95 4091.85 2.738 993.96 4172.96 4112.86 2.890 1026.28 4192.96 4132.86 2.403 Easting (feet) 722000.00 722014.87 722030.40 722046.41 722062.69 722079.27 722096.21 722113.71 722132.27 722152.05 722173.08 722195.41 722218.73 722242.79 722267.38 722292.41 722317.88 722343.75 722370.02 722396.58 722423.35 722450.37 722477.73 722505.62 722534.10 722563.19 722592.78 722622.69 722652.89 722683.39 722714.23 722745.33 722776.50 722807.76 722839.11 Page: 3 Northing Latitude Longitude (feet) Deg Min Sec Deg Min Sec 5980177.51 n70 20 53.125 w148 11 51.363 5980190.36 n70 20 53.247 w148 11 50.917 5980204.54 n70 20 53.382 w148 11 50.451 5980219.86 n70 20 53.528 w148 11 49.970 5980236.21 n70 20 53.684 w148 11 49.481 5980253.35 n70 20 53.847 w148 11 48.981 5980271.07 n70 20 54.017 w148 11 48.471 5980289.33 nT0 20 54.191 w148 11 47.944 5980308.02 n70 20 54.369 w148 11 47.386 5980326.93 n70 20 54.550 w148 11 46.792 5980346.11 n70 20 54.732 w148 11 46.161 5980365.63 n70 20 54.917 w148 11 45.492 5980385.50 n70 20 55.106 w148 11 44.793 5980405.93 n70 20 55.300 w148 11 44.073 5980427.11 n70 20 55.501 w148 11 43.336 5980449.09 n70 20 55.710 w148 11 42.586 5980471.89 n70 20 55.926 w148 11 41.822 5980495.43 n70 20 56.150 w148 11 41.046 5980519.60 n70 20 56.380 w148 11 40.258 5980544.45 n70 20 56.617 w148 11 39.460 5980570.29 n70 20 56.863 w148 11 38.656 5980597.19 n70 20 57.119 w148 11 37.843 5980624.93 n70 20 57.384 w148 11 37.020 5980653.38 n70 20 57.656 w148 11 36.181 5980682.49 n70 20 57.934 w148'11 35.323 5980712.22 n70 20 58.217 w148 11 34.448 5980742.35 n70 20 58.505 w148 11 33.557 5980772.58 n70 20 58.793 w148 11 32.657 5980802.87 n70 20 59.082 w148 11 31.749 5980833.45 n70 20 59.374 w148 11 30.831 5980864.54 n70 20 59.671 w148 11 29.903 5980896.20 n70 20 59.973 w148 11 28.967 5980928.46 n70 21 0.281 w148 11 28.029 5980961.34 n70 21 0.595 w148 11 27.087 5980994.76 n70 21 0.914 w148 11 26.142 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 4 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 4800.00 68.43 44.39 979.87 1058.73 4211.92 4151.82 2.922 722870.56 5981028.69 n70 21 1.239 w148 11 25.194 4850.00 69.45 44.08 1013.30 1091.28 4229.89 4169.79 2.122 722902.11 5981063.07 n70 21 1.567 w148 11 24.242 4900.00 70.54 43.41 1047.25 1123.76 4246.99 4186.89 2.510 722933.57 5981097.95 n70 21 1.901 w148 11 23.293 4950.00 71.13 43.20 1081.61 1156.16 4263.40 4203.30 1.247 722964.94 5981133.26 n70 21 2.239 w148 11 22.346 4998.00 70.69 42.13 1114.97 1186.90 4279.10 4219.00 2.304 722994.68 5981167.51 n70 21 2.567 w148 11 21.447 5000.00 70.52 43.29 1116.35 1188.18 4279.77 4219.67 55.219 722995.91 5981168.94 nT0 21 2.581 w148 11 21.410 5100.00 71.21 43.60 1184.95 1253.14 4312.54 4252.44 0.746 723058.82 5981239.42 n70 21 3.255 w148 11 19.511 5150.00 71.52 43.77 1219.21 1285.87 4328.52 4268.42 0.701 723090.51 5981274.63 nT0 21 3.592 w148 11 18.555 5200.00 70.95 43.79 1253.39 1318.62 4344.60 4284.50 1.151 723122.24 5981309.77 n70 21 3.928 w148 11 17.597 5250.00 70.61 43.71 1287.50 1351.27 4361.06 4300.96 0.691 723153.86 5981344.82 n70 21 4.264 w148 11 16.643 5300.00 71.03 43.73 1321.63 1383.90 4377.49 4317.39 0.841 723185.47 5981379.90 n70 21 4.599 w148 11 15.689 5350.00 71.31 43.72 1355.83 1416.61 4393.63 4333.53 0.561 723217.15 5981415.06 n70 21 4.936 w148 11 14.733 5400.00 71.76 44.04 1390.01 1449.49 4409.47 4349.37 1.100 723249.00 5981450.20 n70 21 5.272 w148 11 13.772 5450.00 71.87 44.28 1424.09 1482.58 4425.07 4364.97 0.497 723281.07 5981485.24 n70 21 5.607 w148 11 12.804 5500.00 71.30 44.16 1458.09 1515.67 4440.86 4380.76 1.168 723313.13 5981520.20 n70 21 5.941 w148 11 11.837 5550.00 71.13 44.19 1492.04 1548.65 4456.96 4396.86 0.341 723345.10 5981555.11 n70 21 6.275 w148 11 10.873 5600.00 70.91 44.05 1525.99 1581.57 4473.23 4413.13 0.521 723376.99 5981590.01 n70 21 6.609 w148 11 9.911 5650.00 70.62 43.72 1560.01 1614.29 4489.70 4429.60 0.839 723408.69 5981624.99 n70 21 6.943 w148 11 8.954 5700.00 70.30 43.46 1594.14 1646.78 4506.42 4446.32 0.798 723440.15 5981660.06 'n70 21 7.279 w148 11 8.004 5750.00 70.32 43.09 1628.41 1679.06 4523.27 4463.17 0.698 723471.40 5981695.27 n70 21 7.616 w148 11 7.061 5800.00 70.33 42.88 1662.85 1711.16 4540.10 4480.00 0.409 723502.46 5981730.65 n70 21 7.955 w148 11 6.122 5850.00 70.46 42.44 1697.49 1743.07 4556.88 4496.78 0.866 723533.34 5981766.22 n70 21 8.295 w148 11 5.189 5900.00 71.72 41.57 1732.64 1774.72 4573.08 4512.98 3.013 723563.93 5981802.29 n70 21 8.641 w148 11 4.264 5950.00 72.58 40.85 1768.45 1806.08 4588.40 4528.30 2.199 723594.22 5981839.00 n70 21 8.993 w148 11 3.347 6000.00 72.89 40.94 1804.54 1837.34 4603.24 4543.14 0.630 723624.39 5981876.00 n70 21 9.348 w148 11 2.433 6050.00 73.34 41.07 1840.64 1868.73 4617.77 4557.67 0.928 723654.70 5981913.02 n70 21 9.703 w148 11 1.516 6100.00 73.06 41.01 1876.75 1900.16 4632.22 4572.12 0.554 723685.04 5981950.04 n70 21 10.058 w148 11 0.597 6150.00 73.51 41.16 1912.84 1931.63 4646.60 4586.50 0.931 723715.43 5981987.04 n70 21 10.413 w148 10 59.677 6200.00 73.69 41.29 1948.92 1963.24 4660.71 4600.61 0.452 723745.96 5982024.04 n70 21 10.767 w148 10 58.752 6250.00 72.91 41.32 1984.89 1994.85 4675.08 4614.98 1.567 723776.49 5982060.93 n70 21 11.121 w148 10 57.828 6300.00 72.80 41.33 2020.77 2026.40 4689.82 4629.72 0.220 723806.96 5982097.73 n70 21 11.474 w148 10 56.906 6350.00 72.50 41.38 2056.60 2057.93 4704.73 4644.63 0.609 723837.42 5982134.47 n70 21 11.826 w148 10 55.984 6400.00 72.12 41.45 2092.32 2089.45 4719.93 4659.83 0.773 723867.86 5982171.10 n70 21 12.177 w148 10 55.062 6450.00 72.02 41.36 2128.00 2120.91 4735.32 4675.22 0.258 723898.25 5982207.70 n70 21 12.528 w148 10 54.142 6500.00 71.70 41.24 2163.69 2152.27 4750.89 4690.79 0.688 723928.54 5982244.30 n70 21 12.879 w148 10 53.225 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Description : Final Definitive Survey Well: NK-41PB1 Date: 20:19, 06 Aug 98 Page: 5 Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 6550.00 72.07 41.32 6600.00 72.28 41.50 6650.00 72.80 41.69 6700.00 72.77 41.90 6750.00 72.34 42.07 6800.00 71.97 42.14 6850.00 70.80 42.34 6900.00 69.97 42.45 6950.00 69.50 42.39 7000.00 69.13 42.43 7050.00 67.87 42.38 7100.00 68.25 42.29 7150.00 69.39 42.36 7200.00 70.20 42.30 7250.00 69.86 42.15 7300.00 70.82 42.11 7350.00 71.14 42.06 7400.00 71.97 42.02 7450.00 72.67 41.99 7500.00 71.93 41.77 7550.00 72.36 42.12 7600.00 72.21 43.06 7650.00 72.09 43.66 7700.00 72.16 44.34 7750.00 71.64 44~71 7800.00 72.11 45.05 7850.00 71.74 45.11 7900.00 71.54 45.29 7950.00 71.66 45.60 7989.00 72.17 46.63 8000.00 71.74 45.79 8050.00 72.30 46.36 8100.00 72.00 46.86 8150.00 72.45 47.00 8200.00 72.57 46.95 North (ft) 2199.40 2235.10 2270.77 2306.38 2341.84 2377.15 2412.22 2447.01 2481.63 2516.17 2550.52 2584.80 2619.27 2653.96 2688.76 2723.68 2758.76 2793.98 2829.38 2864.84 2900.24 2935.31 2969.91 3004.14 3038.03 3071.70 3105.26 3138.70 3171.99 3197.69 3204.92 3237.92 3270.61 3303.13 3335.66 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 2183.62 4766.44 4706.34 0.765 2215.11 4781.74 4721.64 0.537 2246.77 4796.75 4736.65 1.100 2278.60 4811.54 4751.44 0.414 2310.51 4826.53 4766.43 0.906 2342.42 4841.86 4781.76 0.760 2374.28 4857.82 4797.72 2.372 2406.03 4874.60 4814.50 1.671 2437.67 4891.92 4831.82 0.942 2469.22 4909.59 4849.49 0.753 2500.59 4927.91 4867.81 2.506 2531.83 4946.59 4886.49 0.779 2563.22 4964.65 4904.55 2.270 2594.82 4981.92 4921.82 1.629 2626.40 4999.00 4938.90 0.725 2657.99 5015.82 4955.72 1.909 2689.67 5032.11 4972.01 0.662 2721.44 5047.93 4987.83 1.652 2753.32 5063.12 5003.02 1.402 2785.11 5078.32 5018.22 1.535 2816.92 5093.65 5033.55 1.075 2849.16 5108.86 5048.76 1.820 2881.83 5124.19 5064.09 1.168 2914.89 5139.53 5079.43 1.310 2948.21 5155.07 5094.97 1.237 2981.74 5170.62 5110.52 1.147 3015.40 5186.13 5126.03 0.746 3049.08 5201.88 5141.78 0.522 3082.88 5217.66 5157.56 0.628 3109.60 5229.77 5169.67 2.826 3117.15 5233.18 5173.08 8.254 3151.40 5248.61 5188.51 1.560 3185.99 5263.94 5203.84 1.131 3220.77 5279.20 5219.10 0.938 3255.64 5294.23 5234.13 0.266 Easting (feet) 723958.82 723989.23 724019.82 724050.59 724081.43 724112.28 724143.08 724173.79 724204.39 724234.90 724265.24 724295.45 724325.81 724356.36 724386.90 724417.44 724448.07 724478.77 724509.59 724540.32 724571.07 724602.25 724633.88 724665.91 724698.22 724730.74 724763.39 724796.05 724828.86 724854.80 724862.13 724895.39 724928.99 724962.80 724996.68 Northing Latitude Longitude (feet) Deg Min Sec Deg Min Sec 5982280.93 nT0 21 13.230 w148 10 52.309 5982317.54 nT0 21 13.581 w148 10 51.388 5982354.13 nT0 21 13.932 w148 10 50.462 5982390.66 nT0 21 14.282 w148 10 49.532 5982427.04 nT0 21 14.631 w148 10 48.599 5982463.28 nT0 21 14.978 w148 10 47.665 5982499.28 nT0 21 15.323 w148 10 46.734 5982534.99 nT0 21 15.665 w148 10 45.806 5982570.54 nT0 21 16.005 w148 10 44.880 5982605.99 nT0 21 16.345 w148 10 43.958 5982641.25 nT0 21 16.682 w148 10 43.040 5982676.44 nT0 21 17.019 w148 10 42.127 5982711.82 nT0 21 17.358 w148 10 41.209 5982747.43 nT0 21 17.699 w148 10 40.285 5982783.15 nT0 21 18.042 w148 10 39.362 5982818.98 n70 21 18.385 w148 10 38.438 5982854.99 nT0 21 18.730 w148 10 37.511 5982891.13 nT0 21 19.076 w148 10 36.583 5982927.46 nT0 21 19.424 w148 10 35.650 5982963.85 n70 21 19.773 w148 10 34.720 5983000.17 nT0 21 20.121'w148 10 33.790 5983036.17 nT0 21 20.466 w148 10 32.847 5983071.73 nT0 21 20.806 w148 10 31.892 5983106.92 nT0 21 21.142 w148 10 30.925 5983141.77 nT0 21 21.475 w148 10 29.951 5983176.42 nT0 21 21.806 w148 10 28.970 5983210.96 n70 21 22.136 w148 10 27.986 5983245.38 nT0 21 22.465 w148 10 27.001 5983279.65 nT0 21 22.792 w148 10 26.012 5983306.13 n70 21 23.045 w148 10 25.231 5983313.59 nT0 21 23.116 w148 10 25.010 5983347.58 nT0 21 23.440 w148 10 24.008 5983381.28 nT0 21 23.762 w148 10 22.997 5983414.81 nT0 21 24.081 w148 10 21.980 5983448.36 nT0 21 24.401 w148 10 20.960 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 6 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 8250.00 72.22 46.63 3368.29 3290.37 5309.35 5249.25 0.933 725030.44 5983482.01 n70 21 24.722 w148 10 19.944 8300.00 72.35 46.78 3400.95 3325.04 5324.56 5264.46 0.381 725064.12 5983515.68 n70 21 25.043 w148 10 18.930 8350.00 72.43 47.38 3433.41 3359.94 5339.68 5279.58 1.159 725098.04 5983549.15 n70 21 25.362 w148 10 17.910 8400.00 72.43 47.45 3465.66 3395.04 5354.78 5294.68 0.130 725132.17 5983582.43 n70 21 25.679 w148 10 16.883 8450.00 71.97 47.26 3497.91 3430.05 5370.06 5309.96 0.972 725166.21 5983615.70 n70 21 25.996 w148 10 15.859 8500.00 71.77 47.34 3530.14 3464.98 5385.62 5325.52 0.446 725200.17 5983648.94 n70 21 26.313 w148 10 14.838 8550.00 72.32 47.47 3562.33 3499.99 5401.04 5340.94 1.125 725234.21 5983682.15 n70 21 26.629 w148 10 13.814 8600.00 72.23 47.67 3594.46 3535.14 5416.26 5356.16 0.420 725268.39 5983715.31 n70 21 26.945 w148 10 12.785 8650.00 72.86 48.19 3626.42 3570.55 5431.26 5371.16 1.604 725302.84 5983748.30 n70 21 27.259 w148 10 11.750 8700.00 72.58 48.37 3658.19 3606.19 5446.11 5386.01 0.655 725337.52 5983781.11 n70 21 27.572 w148 10 10.708 8750.00 72.41 48.45 3689.84 3641.85 5461.15 5401.05 0.374 725372.23 5983813.81 n70 21 27.883 w148 10 9.664 8800.00 72.54 48.48 3721.46 3677.54 5476.21 5416.11 0.275 725406.96 5983846.46 n70 21 28.194 w148 10 8.621 8850.00 72.40 48.32 3753.11 3713.20 5491.27 5431.17 0.408 725441.67 5983879.15 n70 21 28.505 w148 10 7.578 8900.00 72.45 48.15 3784.86 3748.75 5506.37 5446.27 0.336 725476.27 5983911.94 n70 21 28.817 w148 10 6.538 8950.00 72.08 48.13 3816.64 3784.22 5521.60 5461.50 0.738 725510.78 5983944.75 n70 21 29.129 w148 10 5.500 9000.00 72.47 48.26 3848.38 3819.72 5536.83 5476.73 0.818 725545.32 5983977.53 n70 21 29.441 w148 10 4.462 9050.00 72.63 48.41 3880.09 3855.36 5551.82 5491.72 0.441 725580.00 5984010.28 n70 21 29.753 w148 10 3.420 9100.00 72.24 48.35 3911.75 3891.00 5566.91 5506.81 0.791 725614.68 5984042.98 n70 21 30.064 w148 10 2.377 9150.00 72.22 48.21 3943.44 3926.54 5582.16 5522.06 0.274 725649.27 5984075.70 n70 21 30.376 w148 10 1.338 9200.00 72.48 48.41 3975.13 3962.12 5597.32 5537.22 0.649 725683.89 5984108.43 n70 21 30.687 w148 10 0.297 9250.00 72.50 48.68 4006.70 3997.85 5612.36 5552.26 0.525 725718.68 5984141.04 n70 21 30.997 w148 9 59.252 9300.00 72.17 48.54 4038.19 4033.60 5627.54 5567.44 0.713 725753.47 5984173.58 n70 21 31.307 w148 9 58.206 9350.00 71.91 48.30 4069.76 4069.18 5642.95 5582.85 0.685 725788.10 5984206.19 n70 21 31.617 w148 9 57.166 9400.00 72.02 48.16 4101.43 4104.64 5658.43 5598.33 0.339 725822.61 5984238.89 n70 21 31.928 w148 9 56.128 9450.00 72.23 48.13 4133'.18 ' 4140.09 5673.77 5613.67 0~425 725857.10 5984271.68 n70 21 32~.240 w148 9 55.091 9500.00 72.33 48.19 4164.95 4175.57 5688.99 5628.89 0.227 725891.62 5984304.48 n70 21 32.553 w148 9 54.053 9550.00 72.77 48.40 4196.69 4211.18 5703.98 5643.88 0.964 725926.28 5984337.26 n70 21 32.865 w148 9 53.012 9600.00 72.38 48.25 4228.41 4246.81 5718.95 5658.85 0.830 725960.95 5984370.02 n70 21 33.176 w148 9 51.969 9650.00 72.97 48.08 4260.25 4282.37 5733.83 5673.73 1.218 725995.56 5984402.89 n70 21 33.489 w148 9 50.929 9700.00 72.95 47.85 4292.26 4317.88 5748.49 5688.39 0.431 726030.10 5984435.94 n70 21 33.804 w148 9 49.891 9750.00 72.95 47.70 4324.38 4353.28 5763.15 5703.05 0.285 726064.53 5984469.09 n70 21 34.120 w148 9 48.855 9800.00 73.06 47.81 4356.53 4388.68 5777.76 5717.66 0.288 726098.96 5984502.27 n70 21 34.436 w148 9 47.819 9850.00 72.54 48.42 4388.42 4424.23 5792.55 5732.45 1.562 726133.55 5984535.20 n70 21 34.749 w148 9 46.779 9900.00 72.77 48.66 4420.02 4460.00 5807.46 5747.36 0.655 726168.37 5984567.84 n70 21 35.060 w148 9 45.733 9950.00 72.40 48.76 4451.50 4495.85 5822.42 5762.32 0.757 726203.27 5984600.37 n70 21 35.369 w148 9 44.684 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 7 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 10000.00 72.31 48.74 4482.91 4531.67 5837.58 5777.48 0.193 726238.14 5984632.83 n70 21 35.678 w148 9 43.636 10050.00 72.16 48.72 4514.32 4567.46 5852.83 5792.73 0.303 726272.99 5984665.28 n70 21 35.986 w148 9 42.589 10100.00 71.94 49.21 4545.55 4603.34 5868.24 5808.14 1.025 726307.92 5984697.56 n70 21 36.293 w148 9 41.540 10150.00 72.20 49.92 4576.41 4639.55 5883.63 5823.53 1.452 726343.20 5984729.47 n70 21 36.597 w148 9 40.481 10200.00 72.27 50.04 4607.03 4676.01 5898.89 5838.79 0.260 726378.74 5984761.15 n70 21 36.898 w148 9 39.414 10250.00 72.32 50.06 4637.61 4712.53 5914.10 5854.00 0.110 726414.33 5984792.81 n70 21 37.198 w148 9 38.346 10300.00 72.72 50.20 4668.18 4749.13 5929.11 5869.01 0.852 726450.01 5984824.44 n70 21 37.499 w148 9 37.275 10350.00 72.36 50.10 4698.75 4785.75 5944.11 5884.01 0.742 726485.71 5984856.08 n70 21 37.799 w148 9 36.204 10400.00 72.92 50.14 4729.34 4822.37 5959.03 5898.93 1.124 726521.41 5984887.74 n70 21 38.100 w148 9 35.132 10450.00 72.41 50.15 4759.93 4859.01 5973.93 5913.83 1.030 726557.13 5984919.40 n70 21 38.400 w148 9 34.060 10500.00 72.46 50.26 4790.44 4895.64 5989.02 5928.92 0.239 726592.83 5984950.98 n70 21 38.700 w148 9 32.989 10550.00 72.46 50.47 4820.85 4932.35 6004.09 5943.99 0.389 726628.63 5984982.46 n70 21 38.999 w148 9 31.915 10600.00 72.02 50.43 4851.17 4969.07 6019.34 5959.24 0.893 726664.43 5985013.86 n70 21 39.297 w148 9 30.841 10650.00 72.42 50.39 4881.52 5005.76 6034.61 5974.51 0.819 726700.20 5985045.27 n70 21 39.595 w148 9 29.767 10700.00 72.76 50.39 4911.93 5042.52 6049.56 5989.46 0.666 726736.04 5985076.76 n70 21 39.894 w148 9 28.692 10750.00 72.91 50.49 4942.36 5079.35 6064.32 6004.22 0.348 726771.95 5985108.26 n70 21 40.193 w148 9 27.614 10800.00 72.97 50.60 4972.73 5116.26 6078.99 6018.89 0.262 726807.95 5985139.71 n70 21 40.491 w148 9 26.534 10850.00 72.60 50.95 5002.93 5153.26 6093.79 6033.69 0.997 726844.03 5985170.99 n70 21 40.788 w148 9 25.452 10900.00 72.60 51.18 5032.92 5190.37 6108.74 6048.64 0.450 726880.24 5985202.06 n70 21 41.083 w148 9 24.366 10950.00 73.37 51.37 5062.83 5227.67 6123.37 6063.27 1.582 726916.64 5985233.06 n70 21 41.377 w148 9 23.275 11000.00 73.80 51.29 5092.79 5265.12 6137.50 6077.40 0.873 726953.18 5985264.12 n70 21 41.671 w148 9 22.179 11050.00 73.30 50.47 5123.05 5302.32 6151.66 6091.56 1.861 726989.47 5985295.47 n70 21 41.968 w148 9 21.091 ~1100.00 72.90 50.35 5153.54 5339.19 6166.19 6106.09 0.832 727025.42 5985327.03 n70 21 42.268 w148 9 20.012 11150.00 73.77 50.76 5183.97 5376.18 6180.53 6120.43 1.907 727061.49 5985358.54 n70 21 42.567 w148 9 18.930 11200.00 74.29 51.34 5214.19 5413.56 6194.29 6134.19 1.521 727097.96 5985389.85 n70 21 42.864 w148 9 17.836 11250.00 74.40 51.61 5244.18 5451.22 6207.78 6147.68 0.578 727134.72 5985420.94 n70 21 43.159 w148 9 16.734 11300.00 73.80 51.62 5274.03 5488.92 6221.48 6161.38 1.198 727171.51 5985451.90 n70 21 43.452 w148 9 15.631 11350.00 73.64 51.88 5303.75 5526.61 6235.49 6175.39 0.583 727208.31 5985482.71 n70 21 43.744 w148 9 14.528 11400.00 74.53 51.97 5333.40 5564.46 6249.20 6189.10 1.773 727245.26 5985513.47 n70 21 44.035 w148 9 13.421 11450.00 74.77 52.11 5363.06 5602.48 6262.44 6202.34 0.556 727282.38 5985544.24 n70 21 44.327 w148 9 12.309 11500.00 75.29 52.13 5392.72 5640.60 6275.35 6215.25 1.033 727319.61 5985575.02 n70 21 44.618 w148 9 11.193 11550.00 75.14 52.41 5422.30 5678.84 6288.11 6228.01 0.616 727356.95 5985605.72 n70 21 44.909 w148 9 10.074 11600.00 74.57 52.68 5451.65 5717.15 6301.18 6241.08 1.260 727394.38 5985636.19 n70 21 45.197 w148 9 8.953 11650.00 74.50 52.83 5480.81 5755.52 6314.51 6254.41 0.315 727431.86 5985666.47 n70 21 45.484 w148 9 7.831 11700.00 74.28 52.81 5509.92 5793.88 6327.96 6267.86 0.441 727469.35 5985696.69 n70 21 45.770 w148 9 6.708 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 8 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 11750.00 74.58 52.61 5539.10 5832.20 6341.38 6281.28 0.693 727506.78 5985726.99 n70 21 46.056 w148 9 5.587 11800.00 73.94 52.09 5568.49 5870.31 6354.95 6294.85 1.622 727544.00 5985757.50 n70 21 46.345 w148 9 4.472 11850.00 74.24 51.99 5598.07 5908.22 6368.66 6308.56 0.631 727581.02 5985788.18 n70 21 46.636 w148 9 3.363 11900.00 74.07 52.32 5627.58 5946.20 6382.31 6322.21 0.717 727618.11 5985818.81 n70 21 46.926 w148 9 2.251 11950.00 73.90 52.37 5656.94 5984.25 6396.10 6336.00 0.349 727655.27 5985849.28 n70 21 47.214 w148 9 1.138 12000.00 73.98 52.44 5686.25 6022.33 6409.93 6349.83 0.198 727692.46 5985879.70 n70 21 47.502 w148 9 0.024 12050.00 73.79 52.79 5715.42 6060.49 6423.81 6363.71 0.780 727729.74 5985909.99 n70 21 47.789 w148 8 58.907 12100.00 73.79 52.47 5744.56 6098.65 6437.77 6377.67 0.613 727767.02 5985940.24 n70 21 48.075 w148 8 57.791 12150.00 73.71 51.81 5774.01 6136.55 6451.76 6391.66 1.270 727804.03 5985970.81 n70 21 48.364 w148 8 56.682 12200.00 73.57 51.27 5803.85 6174.12 6465.84 6405.74 1.088 727840.70 5986001.74 n70 21 48.657 w148 8 55.582 12250.00 74.12 51.07 5833.97 6211.53 6479.75 6419.65 1.180 727877.20 5986032.95 n70 21 48.953 w148 8 54.488 12300.00 73.86 50.25 5864.43 6248.70 6493.54 6433.44 1.663 727913.45 5986064.50 n70 21 49.253 w148 8 53.400 12350.00 73.90 50.18 5895.17 6285.61 6507.43 6447.33 0.156 727949.43 5986096.31 n70 21 49.555 w148 8 52.320 12400.00 73.68 50.24 5925.89 6322.51 6521.38 6461.28 0.445 727985.40 5986128.12 n70 21 49.856 w148 8 51.240 12450.00 73.24 50.24 5956.55 6359.35 6535.62 6475.52 0.896 728021.32 5986159.85 n70 21 50.158 w148 8 50.162 12500.00 73.49 50.28 5987.17 6396.19 6549.93 6489.83 0.509 728057.24 5986191.55 n70 21 50.459 w148 8 49.084 12550.00 72.80 50.38 6017.72 6433.03 6564.43 6504.33 1.385 728093.15 5986223.17 n70 21 50.759 w148 8 48.006 12600.00 72.51 50.71 6048.05 6469.88 6579.33 6519.23 0.865 728129.08 5986254.58 n70 21 51.057 w148 8 46.927 12650.00 72.62 51.10 6078.13 6506.90 6594.31 6534.21 0.770 728165.20 5986285.74 n70 21 51.352 w148 8 45.844 12700.00 72.23 51.21 6108.03 6544.03 6609.41 6549.31 0.804 728201.42 5986316.72 n70 21 51.646 w148 8 44.757 12750.00 72.22 51.19 6137.86 6581.13 6624.68 6564.58 0.040 728237.63 5986347.64 n70 21 51.939 w148 8 43.671 12800.00 72.15 51.27 6167.67 6618.25 6639.98 6579.88 0.208 728273.84 5986378.53 n70 21 52.232 w148 8 42.585 2850.00 71.61 51.15 6197.44 6655.28 6655.53 6595.43 1.086 728309.98 5986409.38 n70 21 52.524 w148 8 41.501 12900.00 71.87 51.07 6227.25 6692.24 6671.19 6611.09 0.533 728346.04 5986440.27 n70 21 52.817 w148 8 40.420 12950.00 71.40 50.00 6257.41 6728.88 6686.94 6626.84 2.247 728381.76 5986471.51 n70 21 53.113 w148 8 39.347 13000.00 71.63 49.38 6288.09 6765.03 6702.80 6642.70 1.265 728416.99 5986503.24 n70 21 53.415 w148 8 38.289 13050.00 71.71 49.59 6318.93 6801.12 6718.52 6658.42 0.435 728452.14 5986535.13 n70 21 53.718 w148 8 37.233 13100.00 71.50 49.13 6349.83 6837.12 6734.30 6674.20 0.963 728487.21 5986567.08 n70 21 54.021 w148 8 36.179 13150.00 71.70 49.09 6380.89 6872.98 6750.08 6689.98 0.412 728522.14 5986599.18 n70 21 54.326 w148 8 35.130 13200.00 71.34 49.00 6411.97 6908.80 6765.93 6705.83 0.737 728557.02 5986631.31 n70 21 54.632 w148 8 34.081 13250.00 71.29 49.04 6443.03 6944.56 6781.94 6721.84 0.135 728591.84 5986663.42 n70 21 54.937 w148 8 33.035 13300.00 71.00 48.85 6474.11 6980.24 6798.10 6738.00 0.670 728626.59 5986695.53 n70 21 55.242 w148 8 31.990 13350.00 71.69 48.63 6505.35 7015.85 6814.09 6753.99 1.437 728661.26 5986727.81 n70 21 55.549 w148 8 30.948 13400.00 71.91 48.50 6536.78 7051.46 6829.71 6769.61 0.506 728695.92 5986760.29 n70 21 55.858 w148 8 29.906 13450.00 71.46 48.65 6568.19 7087.05 6845.42 6785.32 0.943 728730.57 5986792.73 n70 21 56.167 w148 8 28.864 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 9 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 13500.00 71.71 48.74 6599.50 7122.69 6861.21 6801.11 0.531 728765.26 5986825.08 n70 21 56.474 w148 8 27.821 13550.00 72.13 48.85 6630.81 7158.45 6876.73 6816.63 0.860 728800.08 5986857.44 n70 21 56.782 w148 8 26.774 13600.00 72.23 48.78 6662.16 7194.28 6892.03 6831.93 0.248 728834.96 5986889.83 n70 21 57.090 w148 8 25.725 13650.00 72.14 48.86 6693.50 7230.10 6907.33 6847.23 0.231 728869.84 5986922.22 n70 21 57.398 w148 8 24.677 13700.00 72.28 48.86 6724.82 7265.96 6922.60 6862.50 0.268 728904.75 5986954.59 n70 21 57.705 w148 8 23.627 13750.00 72.99 49.05 6756.16 7301.95 6937.53 6877.43 1.467 728939.79 5986986.97 n70 21 58.013 w148 8 22.574 13800.00 72.60 49.01 6787.48 7338.01 6952.31 6892.21 0.771 728974.91 5987019.34 n70 21 58.321 w148 8 21.518 13850.00 72.45 48.98 6818.77 7374.00 6967.33 6907.23 0.320 729009.96 5987051.69 n70 21 58.628 w148 8 20.464 13900.00 72.06 48.95 6850.03 7409.92 6982.57 6922.47 0.772 729044.94 5987084.00 n70 21 58.935 w148 8 19.413 13950.00 71.73 48.96 6881.24 7445.77 6998.11 6938.01 0.668 729079.84 5987116.25 n70 21 59.242 w148 8 18.364 14000.00 71.93 49.34 6912.31 7481.70 7013.70 6953.60 0.831 729114.84 5987148.37 n70 21 59.547 w148 8 17.312 14050.00 72.27 49.76 6943.18 7517.91 7029.07 6968.97 1.049 729150.12 5987180.29 n70 21 59.850 w148 8 16.252 14100.00 72.28 49.72 6973.95 7554.26 7044.29 6984.19 0.094 729185.53 5987212.13 n70 22 0.153 w148 8 15.188 14150.00 71.97 49.98 7004.64 7590.63 7059.64 6999.54 0.798 729220.98 5987243.87 n70 22 0.454 w148 8 14.123 14200.00 72.31 50.31 7035.14 7627.16 7074.98 7014.88 0.927 729256.59 5987275.44 n70 22 0.754 w148 8 13.054 14250.00 72.72 50.55 7065.51 7663.93 7090.00 7029.90 0.941 729292.44 5987306.89 n70 22 1.052 w148 8 11.978 14300.00 72.21 50.54 7095.81 7700.74 7105.06 7044.96 1.016 729328.33 5987338.26 n70 22 1.350 w148 8 10.900 14350.00 72.15 50.33 7126.13 7737.43 7120.36 7060.26 0.422 729364.12 5987369.65 n70 22 1.647 w148 8 9.826 14400.00 71.86 50.42 7156.46 7774.06 7135.81 7075.71 0.617 729399.83 5987401.05 n70 22 1.945 w148 8 8.753 14450.00 72.03 50.43 7186.74 7810.70 7151.31 7091.21 0.350 729435.56 5987432.41 n70 22 2.243 w148 8 7.681 14500.00 72.77 50.61 7217.04 7847.49 7166.43 7106.33 1.516 729471.43 5987463.78 n70 22 2.540 w148 8 6.604 14550.00 72.25 50.74 7247.26 7884.38 7181.46 7121.36 1.071 729507.41 5987495.08 n70 22 2.837 w148 8 5.524 _4600.00 72.32 50.94 7277.34 7921.31 7196.67 7136.57 0.409 729543.43 5987526.23 n70 22 3.133 w148 8 4.443 14650.00 72.08 50.98 7307.33 7958.29 7211.96 7151.86 0.485 729579.50 5987557.30 n70 22 3.427 w148 8 3.360 14700.00 71.81 50-.96 7337.26 7995.21 7227.45 7167.35 0.549 729615.52 5987588.31 n70 22 3.721 w148 8 2.279 14750.00 72.07 51.09 7367.16 8032.17 7242.96 7182.86 0.576 729651.57 5987619.29 n70 22 4.015 w148 8 1.198 14800.00 71.57 51.38 7396.90 8069.21 7258.56 7198.46 1.135 729687.72 5987650.12 n70 22 4.307 w148 8 0.113 14850.00 72.20 51.37 7426.57 8106.34 7274.11 7214.01 1.254 729723.95 5987680.86 n70 22 4.598 w148 7 59.026 14900.00 72.56 51.75 7456.20 8143.66 7289.24 7229.14 1.026 729760.37 5987711.58 n70 22 4.889 w148 7 57.934 14950.00 72.10 51.87 7485.65 8181.10 7304.42 7244.32 0.949 729796.93 5987742.13 n70 22 5.179 w148 7 56.838 15000.00 72.54 51.91 7515.05 8218.59 7319.60 7259.50 0.891 729833.52 5987772.63 n70 22 5.467 w148 7 55.740 15050.00 72.50 51.81 7544.51 8256.10 7334.62 7274.52 0.203 729870.14 5987803.18 n70 22 5.757 w148 7 54.642 15100.00 72.18 51.89 7573.94 8293.56 7349.79 7289.69 0.651 729906.72 5987833.70 n70 22 6.046 w148 7 53.545 15150.00 72.12 52.42 7603.13 8331.15 7365.11 7305.01 1.014 729943.42 5987864.00 n70 22 6.332 w148 7 52.445 15200.00 72.39 52.51 7632.15 8368.91 7380.35 7320.25 0.550 729980.31 5987894.12 n70 22 6.617 w148 7 51.339 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 10 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 15250.00 72.97 52.78 7661.11 8406.85 7395.24 7335.14 1.279 730017.37 5987924.19 n70 22 6.902 w148 7 50.229 15300.00 72.93 52.93 7689.98 8444.95 7409.90 7349.80 0.295 730054.60 5987954.17 n70 22 7.185 w148 7 49.113 15350.00 72.57 53.16 7718.69 8483.11 7424.72 7364.62 0.850 730091.89 5987983.99 n70 22 7.467 w148 7 47.996 15400.00 72.96 53.28 7747.28 8521.36 7439.54 7379.44 0.807 730129.28 5988013.70 n70 22 7.748 w148 7 46.876 15450.00 72.30 53.45 7775.75 8559.65 7454.47 7394.37 1.358 730166.71 5988043.29 n70 22 8.027 w148 7 45.755 15500.00 71.96 53.52 7804.07 8597.90 7469.81 7409.71 0.685 730204.10 5988072.73 n70 22 8.306 w148 7 44.636 15550.00 71.80 53.58 7832.30 8636.12 7485.36 7425.26 0.332 730241.47 5988102.08 n70 22 8.583 w148 7 43.517 15600.00 71.82 53.36 7860.58 8674.29 7500.97 7440.87 0.406 730278.78 5988131.48 n70 22 8.860 w148 7 42.399 15650.00 72.39 53.11 7889.06 8712.41 7516.33 7456.23 1.229 730316.04 5988161.07 n70 22 9.140 w148 7 41.283 15700.00 72.51 52.85 7917.76 8750.47 7531.41 7471.31 0.552 730353.23 5988190.89 n70 22 9.422 w148 7 40.169 15750.00 72.53 52.76 7946.59 8788.46 7546.43 7486.33 0 172 730390.35 5988220.83 n70 22 9.705 w148 7 39.057 15800.00 72.30 52.77 7975.43 8826.41 7561.53 7501.43 0 460 730427.42 5988250.78 n70 22 9.988 w148 7 37.946 15850.00 72.20 52.70 8004.27 8864.31 7576.78 7516.68 0 246 730464.45 5988280.72 n70 22 10.271 w148 7 36.836 15900.00 72.59 51.86 8033.42 8902.00 7591.90 7531.80 1 786 730501.27 5988310.98 n70 22 10.558 w148 7 35.732 15950.00 72.48 51.12 8063.12 8939.33 7606.91 7546.81 1 424 730537.69 5988341.76 n70 22 10.849 w148 7 34.639 16000.00 72.50 51.22 8093.02 8976.47 7621.95 7561.85 0 191 730573.94 5988372.74 n70 22 11.143 w148 7 33.552 16050.00 72.51 51.24 8122.87 9013.66 7636.98 7576.88 0.044 730610.22 5988403.69 n70 22 11.436 w148 7 32.463 16100.00 72.36 51.19 8152.73 9050.81 7652.07 7591.97 0.315 730646.47 5988434.63 n70 22 11.729 w148 7 31.375 16150.00 72.52 50.97 8182.68 9087.90 7667.16 7607.06 0.526 730682.66 5988465.66 n70 22 12.023 w148 7 30.289 16200.00 72.07 50.75 8212.75 9124.85 7682.36 7622.26 1.008 730718.69 5988496.81 n70 22 12.319 w148 7 29.207 16250.00 72.15 50.69 8242.87 9161.68 7697.72 7637.62 0.201 730754.61 5988528.01 n70 22 12.615 w148 7 28.129 16300.00 71.92 50.53 8273.06 9198.44 7713.14 7653.04 0.550 730790.46 5988559.27 n70 22 12.911 w148 7 27.052 .6350.00 72.20 50.47 8303.31 9235.14 7728.55 7668.45 0.579 730826.25 5988590.60 n70 22 13.208 w148 7 25.978 16400.00 72.65 50.39 8333.67 9271.89 7743.64 7683.54 0.913 730862.08 5988622.03 n70 22 13.506 w148 7 24.902 16450.00 72.37 50.26 83-64.12 9308.59 7758.67 7698.57 0.613 730897.87 5988653.55 n70 22 13.805 w148 7 23.827 16500.00 72.65 50.22 8394.62 9345.25 7773.69 7713.59 0.563 730933.61 5988685.12 n70 22 14.105 w148 7 22.753 16550.00 72.82 50.04 8425.23 9381.89 7788.53 7728.43 0.478 730969.33 5988716.80 n70 22 14.405 w148 7 21.680 16600.00 73.02 49.99 8455.95 9418.51 7803.22 7743.12 0.410 731005.02 5988748.58 n70 22 14.707 w148 7 20.608 16650.00 73.02 49.91 8486.72 9455.12 7817.82 7757.72 0.153 731040.70 5988780.42 n70 22 15.009 w148 7 19.536 16700.00 72.74 49.81 8517.52 9491.65 7832.54 7772.44 0.585 731076.30 5988812.29 n70 22 15.312 w148 7 18.466 16750.00 72.84 49.67 8548.39 9528.09 7847.33 7787.23 0.346 731111.81 5988844.23 n70 22 15.615 w148 7 17.399 16800.00 72.58 49.59 8579.31 9564.47 7862.19 7802.09 0.539 731147.25 5988876.21 n70 22 15.918 w148 7 16.333 16850.00 72.25 49.77 8610.16 9600.81 7877.29 7817.19 0.750 731182.66 5988908.11 n70 22 16.221 w148 7 15.269 16900.00 72.33 49.73 8640.93 9637.16 7892.50 7832.40 0.175 731218.09 5988939.95 n70 22 16.523 w148 7 14.204 16950.00 72.48 50.26 8671.57 9673.67 7907.62 7847.52 1.051 731253.67 5988971.65 n70 22 16.824 w148 7 13.135 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 11 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 17000.00 72.52 50.26 8702.05 9710.34 7922.65 7862.55 0.076 731289.42 5989003.21 n70 22 17.124 w148 7 12.061 17050.00 72.92 50.32 8732.55 9747.07 7937.50 7877.40 0.810 731325.23 5989034.78 n70 22 17.423 w148 7 10.986 17100.00 72.66 50.34 8763.05 9783.84 7952.29 7892.19 0.521 731361.08 5989066.35 n70 22 17.723 w148 7 9.909 17150.00 72.72 50.26 8793.54 9820.56 7967.16 7907.06 0.185 731396.88 5989097.91 n70 22 18.022 w148 7 8.833 17200.00 72.35 50.14 8824.07 9857.21 7982.17 7922.07 0.758 731432.60 5989129.51 n70 22 18.322 w148 7 7.760 17250.00 72.38 50.16 8854.60 9893.79 7997.32 7937.22 0.067 731468.27 5989161.11 n70 22 18.622 w148 7 6.689 17300.00 72.40 50.01 8885.18 9930.34 8012.44 7952.34 0.284 731503.90 5989192.76 n70 22 18.922 w148 7 5.618 17350.00 72.16 50.04 8915.78 9966.84 8027.66 7967.56 0.472 731539.47 5989224.42 n70 22 19.222 w148 7 4.549 17400.00 72.48 49.98 8946.39 10003.34 8042.85 7982.75 0.644 731575.04 5989256.10 n70 22 19.523 w148 7 3.480 17450.00 72.11 49.94 8977.03 10039.81 8058.05 7997.95 0.749 731610.59 5989287.81 n70 22 19.824 w148 7 2.412 17500.00 72.43 49.97 9007.67 10076.27 8073.28 8013.18 0.642 731646.12 5989319.51 n70 22 20.125 w148 7 1.344 17550.00 71.92 49.95 9038.29 10112.71 8088.59 8028.49 1.021 731681.64 5989351.19 n70 22 20.425 w148 7 0.277 17600.00 72.12 50.01 9068.87 10149.13 8104.03 8043.93 0.416 731717.14 5989382.84 n70 29 20.725 w148 6 59.210 17650.00 71.76 50.02 9099.42 10185.55 8119.53 8059.43 0.713 731752.64 5989414.45 n70 22 21.025 w148 6 58.143 17687.10 71.25 49.50 9122.15 10212.41 8131.29 8071.19 1.920 731778.81 5989437.96 n70 22 21.249 w148 6 57.357 17710.70 71.06 49.70 9136.62 10229.42 8138.92 8078.82 1.136 731795.39 5989452.93 n70 22 21.391 w148 6 56.858 17805.20 68.89 50.10 9193.81 10297.33 8171.27 8111.17 2.330 731861.57 5989512.10 n70 22 21.952 w148 6 54.869 17897.10 68.01 49.00 9249.26 10362.37 8205.03 8144.93 1.468 731924.94 5989569.45 n70 22 22.497 w148 6 52.964 17992.20 68.80 48.20 9307.74 10428.70 8240.03 8179.93 1.141 731989.51 5989629.87 n70 22 23.071 w148 6 51.021 18085.80 69.60 46.80 9366.85 10493.21 8273.27 8213.17 1.639 732052.23 5989690.86 n70 22 23.651 w148 6 49.132 18178.80 69.98 45.20 9427.48 10555.98 8305.40 8245.30 1.665 732113.18 5989753.31 n70 22 24.247 w148 6 47.292 48273.40 69.98 41.60 9492.05 10617.04 8337.80 8277.70 3.575 732172.30 5989819.66 n70 22 24.881 w148 6 45.503 .8368.60 71.77 41.10 9559.57 10676.46 8368.99 8308.89 1.945 732229.69 5989888.90 n70 22 25.544 w148 6 43.762 18462.50 73.77 38.30 9628.57 10733.73 8396.80 8336.70 3.556 732284.89 5989959.56 n70 22 26.222 w148 6 42.084 .18555.70 73.42 35.70 9699.96 10787.53 8423.13 8363.03 2.702 732336.55 5990032.52 n70 22 26.923 w148 6 40.506 18649.70 73.32 35.00 9773.42 10839.64 8450.03 8389.93 0.721 732386.46 5990107.49 n70 22 27.645 w148 6 38.979 18745.10 73.58 32.70 9849.36 10890.58 8477.21 8417.11 2.327 732435.13 5990184.90 n70 22 28.391 w148 6 37.485 18837.90 72.96 29.70 9925.37 10936.61 8503.93 8443.83 3.167 732478.89 5990262.23 n70 22 29.138 w148 6 36.135 18929.50 72.04 28.50 10001.70 10979.10 8531.47 8471.37 1.603 732519.10 5990339.78 n70 22 29.888 w148 6 34.888 19021.60 71.55 27.30 10079.02 11020.04 8560.25 8500.15 1.347 732557.73 5990418.27 n70 22 30.648 w148 6 33.687 19118.30 70.80 23.70 10161.61 11059.44 8591.46 8531.36 3.608 732594.66 5990501.99 n70 22 31.460 w148 6 32.531 19213.60 69.95 21.80 10244.38 11094.15 8623.47 8563.37 2.079 732626.91 5990585.75 n70 22 32.273 w148 6 31.511 19264.20 70.68 21.70 10288.63 11111.81 8640.52 8580.42 1.455 732643.25 5990630.50 n70 22 32.708 w148 6 30.993 19308.60 70.21 21.80 10327.49 11127.31 8655.38 8595.28 1.080 732657.59 5990669.80 n70 22 33.090 w148 6 30.538 19402.00 69.11 22.00 10408.75 11159.97 8687.84 8627.74 1.195 732687.84 5990751.99 n70 22 33.889 w148 6 29.578 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB1 Page: 12 Field: Niakuk Date: 20:19, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitude (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Sec 19493.30 69.72 22.60 10487.83 11192.41 8719.94 8659.84 0.908 732717.91 5990831.98 n70 22 34.666 w148 6 28.626 19585.60 69.39 21.80 10567.90 11225.09 8752.18 8692.08 0.887 732748.20 5990912.99 n70 22 35.453 w148 6 27.666 19679.30 71.16 24.00 10649.14 11259.41 8783.81 8723.71 2.907 732780.11 5990995.20 nT0 22 36.251 w148 6 26.658 19774.00 71.97 24.40 10731.08 11296.24 8813.76 8753.66 0.945 732814.49 5991078.20 n70 22 37.057 w148 6 25.577 [9865.70 71.76 23.90 10810.60 11331.89 8842.30 8782.20 0.567 732847.78 5991158.73 n70 22 37.838 w148 6 24.530 19960.20 71.68 23.90 10892.64 11368.25 8871.94 8811.84 0.085 732881.68 5991241.80 n70 22 38.644 w148 6 23.462 20052.60 71.17 22.10 10973.25 11402.47 8901.38 8841.28 1.927 732913.51 5991323.40 n70 22 39.437 w148 6 22.457 20151.80 71.58 21.80 11060.44 11437.61 8933.06 8872.96 0.503 732946.05 5991411.58 n70 22 40.294 w148 6 21.425 20243.20 71.88 21.80 11141.03 11469.84 8961.71 8901.61 0.328 732975.88 5991493.08 n70 22 41.086 w148 6 20.478 20335.50 71.97 21.40 11222.61 11502.14 8990.35 8930.25 0.423 733005.75 5991575.58 n70 22 41.888 w148 6 19.529 20428.30 71.71 20.00 11305.10 11533.31 9019.27 8959.17 1.461 733034.46 5991658.95 n70 22 42.698 w148 6 18.613 20522.80 71.35 20.40 11389.21 11564.26 9049.21 8989.11 0.553 733062.90 5991743.94 n70 22 43.525 w148 6 17.704 20613.00 72.00 21.00 11469.31 11594.53 9077.57 9017.47 0.958 733090.79 5991824.90 n70 22 44.313 w148 6 16.815 20613.00 72.00 21.00 11469.31 11594.53 9077.57 9017.47 0.000 733090.79 5991824.90 n70 22 44.313 w148 6 16.815 Operator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41PB2 Date: 20:55, 06 Aug 98 DEFINITIVE WDF : Yes Description : Final Definitive Survey Associated wellbore : Current Created/Updated By delappcs on 17:27, 04 Feb 98 W/DF type - Composite Facility Details : Actual Location Coordinates Latitude 70 deg 21 min 5.879 sec N Longitude 148 deg 15 min 27.984 sec W Eastings 714553.260 feet Northings 5981257.790 feet Geodetic Datum NAD27AFT Mapping Projection TMALSK4F Grid data at Well Reference Point : Convergence 1.696226 deg Scale Factor 0.999956 Tie In Details Tie In Type : Well Reference Coordinates MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 40.70 0.000 0.000 0.00 0.00 TVD (ft) 40.70 Concatenation of survey stations Number of Survey Points : 367 End Depth : 21225.00 ft Extrapolation to TD - average build rate : - average walk rate : 0.000 deg/100ft 0.000 deg/100ft Survey Composition Details Survey Description Gyrodata drillpipe multishot -continuous MWD - Standard (input as multishot) Start Depth (ft) 100.00 17687.10 End Depth (ft) 17650.00 21110.90 Ail Depths are relative to BRT on rig POOL 7 Ail Azimuths are relative to TRUE North ORIGINAL Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB2 Date: 20:55, 06 Aug 98 Page: 2 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 40.70 0.00 0.00 100.00 0.27 312.90 200.00 0.08 60.42 300.00 0.23 165.55 400.00 0.25 285.22 500.00 0.19 313.96 599.00 0.14 102.51 699.00 0.28 246.75 799.00 0.14 348.96 903.00 0.16 90.67 1000.00 0.22 242.90 1101.00 0.26 339.33 1200.00 0.23 7.88 1308.00 0.25 4.38 1399.00 0.28 27.01 1500.00 0.29 28.71 1599.00 0.27 348.18 1700.00 0.32 357.94 1805.00 0.77 40.76 1904.00 1.82 48.86 2006.00 3.58 43.77 2106.00 5.30 39.20 2206.00 6.41 39.83 2306.00 7.80 43.99 2406.00 8.34 45.17 2506.00 11.05 46.67 2606.00 13.47 46.16 2706.00 15.30 47.25 2756.00 16.58 47.40 2756.00 16.58 48.38 2800.00 17.51 48.62 2850.00 17.93 49.17 2900.00 18.69 49.70 2950.00 19.13 51.56 3000.00 20.35 52.35 North (ft) 0.00 0.10 0.29 0.13 -0.01 0.17 0.25 0.13 0.15 0.28 0.19 0.32 0.72 1.17 1.57 2.01 2.46 2.98 3.80 5.33 8.70 14.53 22.39 31.56 41.56 53.25 67.90 84.92 94.23 94.23 102.77 112.78 122.99 133.26 143.66 East TVD(BRT) TVD(SS) (ft) 0.00 -0.10 -0.21 -0.10 -0.26 -0.59 -0.59 -0.70 -0.95 -0.83 -0.86 -1.11 1101.00 1040.90 -1.16 1200.00 1139.90 -1.11 1307.99 1247.89 -1.00 1398.99 1338.89 -0.76 1499.99 1439.89 ~-0.69 1598.99 1538.89 -0.75 1699.99 1639.89 -0.30 1804.98 1744.88 1.31 1903.96 1843.86 4.73 2005.84 1945.74 9.81 2105.54 2045.44 16.30 2205.02 2144.92 24.59 2304.25 2244.15 34.45 2403.25 2343.15 46.57 2501.82 2441.72 61.94 2599.53 2539.43 80.03 2696.39 2636.29 90.13 2744.47 2684.37 90.13 2744.47 2684.37 99.79 2786.53 2726.43 111.25 2834.16 2774.06 123.18 2881.63 2821.53 135.71 2928.93 2868.83 149.01 2975.99 2915.89 DLS (ft) (ft) (deg/100ft) 40.70 -19.40 0.000 100.00 39.90 0.455 200.00 139.90 0.304 300.00 239.90 0.262 400.00 339.90 0.415 500.00 439.90 0.124 599.00 538.90 0.321 699.00 638.90 0.402 799.00 738.90 0.338 903.00 842.90 0.224 1000.00 939.90 0.381 0.355 0.126 0.023 0.119 0.013 0.197 0.070 0.547 1.075 1.740 1.756 1.114 1.479 0.572 2.716 2.424 1.845 2.579 0.000 2.106 0.898 1.563 1.487 2.508 Easting (feet) 721841.36 721841.25 721841.13 721841.25 721841.09 721840.76 721840.75 721840.65 721840.40 721840.52 721840.49 721840.24 721840.17 721840.21 721840.31 721840.53 721840.59 721840.52 721840.94 721842.51 721845.83 721850.73 721856.99 721865.00 721874.56 721886.32 721901.26 721918.83 721928.65 721928.65 721938.05 721949.22 721960.84 721973.06 721986.04 Northing Latitude Longitu, (feet) Deg Min Sec Deg Min S, 5980017.95 n70 20 51.603 w148 11 56.11 5980018.04 n70 20 51.603 w148 11 56.11 5980018.24 n70 20 51.605 w148 11 56.1, 5980018.08 n70 20 51.604 w148 11 56.1[ 5980017.94 n70 20 51.602 w148 11 56.1, 5980018.10 n70 20 51.604 w148 11 56.1! 5980018.19 n70 20 51.605 w148 11 56.1! 5980018.06 n70 20 51.604 w148 11 56.1! 5980018.08 n70 20 51.604 w148 11 56.1, 5980018.20 n70 20 51.605 w148 11 56.1. 5980018.12 n70 20 51.604 w148 11 56.1 5980018.24 n70 20 51.606 w148 11 56.1 5980018.64 n70 20 51.610 w148 11 56.1 5980019.09 n70 20 51.614 w148 11 56.1 5980019.49 n70 20 51.618 w148 11 56.1 5980019.94 n70 20 51.622 w148 11 56.1 5980020.39 n70 20 51.627 w148 11 56.1 5980020.91 n70 20 51.632 w148 11 56.1 5980021.74 n70 20 51.640 w148 11 56.1 5980023.32 n70 20 51.655 w148 11 56.0 5980026.78 n70 20 51.688 w148 11 55.9 5980032.76 n70 20 51.745 w148 11 55.8 5980040.82 n70 20 51.823 w148 11 55.6 5980050.22 n70 20 51.913 w148 11 55.4 5980060.51 n70 20 52.011 w148 11 55.11 5980072.56 n70 20 52.126 w148 11 54.7' 5980087.65 n70 20 52.270 w148 11 54.31 5980105.20 n70 20 52.438 w148 11 53.71 5980114.80 n70 20 52.529 w148 11 53.5 5980114.80 n70 20 52.529 w148 11 53.5 5980123.63 n70 20 52.613 w148 11 53.21 5980133.97 n70 20 52.712 w148 11 52.8 5980144.53 n70 20 52.812 w148 11 52.51 5980155.17 n70 20 52.913 w148 11 52.1. 5980165.96 n70 20 53.015 w148 11 51.7 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB2 Date: 20:55, 06 Aug 98 Page: 3 Description : Final Definitive Survey - All Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 3050.00 22.14 51.84 3100.00 24.16 49.92 3150.00 25.60 48.74 3200.00 27.01 47.19 3250.00 27.96 46.01 3300.00 29.01 45.49 3350.00 29.71 45.30 3400.00 31.06 45.67 3450.00 32.54 47.27 3500.00 33.82 48.70 3550.00 35.60 49.93 3600.00 37.19 51.11 3650.00 38.38 51.42 3700.00 39.92 51.27 3750.00 41.03 50.68 3800.00 42.52 50.12 3850.00 43.76 49.62 3900.00 45.01 49.19 3950.00 46.10 48.99 4000.00 47.23 48.21 4050.00 48.99 47.22 4100.00 50.38 46.43 4150.00 52.03 46.18 4200.00 53.64 46.07 4250.00 55.44 46.06 4300.00 57.17 46.09 4350.00 58.10 46.25 4400.00 58.46 46.54 4450.00 59.14 46.70 4500.'00 60.35 46.53 4550.00 61.99 46.40 4600.00 63.16 45.98 4650.00 64.45 45.44 4700.00 65.85 45.07 4750.00 66.99 44.66 North (ft) 154.80 167.21 180.92 195.76 211.62 228.26 245.48 263.20 281.34 299.65 318.21 337.06 356.23 375.95 396.38 417.62 439.66 462.42 485.80 509.85 534.90 560.98 587.90 615.52 643.77 672.63 701.87 731.21 760.58 790.25 820.42 851.14 882.47 914.41 946.89 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 163.31 3022.59 2962.49 3.593 178.55 3068.57 3008.47 4.320 194.50 3113.92 3053.82 3.048 210.95 3158.75 3098.65 3.128 227.71 3203.10 3143.00 2.193 244.79 3247.05 3186.95 2.157 262.24 3290.63 3230.53 1.420 280.28 3333.76 3273.66 2.714 299.39 3376.25 3316.15 3.418 319.72 3418.10 3358.00 2.999 341.31 3459.20 3399.10 3.813 364.21 3499.45 3439.35 3.473 388.11 3538.96 3478.86 2.415 412.76 3577.74 3517.64 3.084 437.97 3615.77 3555.67 2.366 463.64 3653.06 3592.96 3.065 489.77 3689.54 3629.44 2.576 516.33 3725.27 3665.17 2.575 543.31 3760.28 3700.18 2.199 570.59 3794.59 3734.49 2.528 598.12 3827.97 3767.87 3.806 625.92 3860.32 3800.22 3.030 654.10 3891.64 3831.54 3.319 682.82 3921.85 3861.75 3.221 712.15 3950.86 3890.76 3.598 742.11 3978.60 3918.50 3.468 772.57 4005.36 3945.26 1.880 803.37 4031.65 3971.55 0.873 834.45 4057.55 3997.45 1.395 865.84 4082.74 4022.64 2.427 897.59 4106.85 4046.75 3.285 929.62 4129.88 4069.78 2.475 961.73 4151.95 4091.85 2.738 993.96 4172.96 4112.86 2.890 1026.28 4192.96 4132.86 2.403 Easting (feet) 722000.00 722014.87 722030.40 722046.41 722062.69 722079.27 722096.21 722113.71 722132 27 722152 05 722173 08 722195 41 722218 73 722242 79 722267.38 722292.41 722317.88 722343.75 722370.02 722396.58 722423.35 722450.37 722477.73 722505.62 722534.10 722563.19 722592.78 722622.69 722652.89 722683.39 722714.23 722745.33 722776.50 722807.76 722839.11 Northing Latitude Longitu (feet) Deg Min Sec Deg Min S 5980177.51 n70 20 53.125 w148 11 51.3 5980190.36 n70 20 53.247 w148 11 50.9 5980204.54 n70 20 53.382 w148 11 50.4 5980219.86 n70 20 53.528 w148 11 49.9' 5980236.21 n70 20 53.684 w148 11 49.4. 5980253.35 n70 20 53.847 w148 11 48.9 5980271.07 n70 20 54.017 w148 11 48.4' 5980289.33 n70 20 54.191 w148 11 47.9 5980308.02 n70 20 54.369 w148 11 47.3 5980326.93 n70 20 54.550 w148 11 46.7 5980346.11 n70 20 54.732 w148 11 46.1 5980365.63 n70 20 54.917 w148 11 45.4 5980385.50 n70 20 55.106 w148 11 44.7 5980405.93 n70 20 55.300 w148 11 44.0 5980427.11 n70 20 55.501 w148 11 43.3 5980449.09 n70 20 55.710 w148 11 42.5 5980471.89 n70 20 55.926 w148 11 41.8 5980495.43 n70 20 56.150 w148 11 41.0 5980519.60 n70 20 56.380 w148 11 40.2 5980544.45 n70 20 56.617 w148 11 39.4 5980570.29 n70 20 56.863 w148 11 38.6 5980597.19 n70 20 57.119 w148 11 37.8 5980624.93 n70 20 57.384 w148 11 37.0 5980653.38 n70 20 57.656 w148 11 36.1 5980682.49 n70 20 57.934 w148 11 35.3 5980712.22 n70 20 58.217 w148 11 34.4. 5980742.35 n70 20 58.505 w148 11 33.5! 5980772.58 n70 20 58.793 w148 11 32.6! 5980802.87 n70 20 59.082 w148 11 31.7, 5980833.45 n70 20 59.374 w148 11 30.81 5980864.54 n70 20 59.671 w148 11 29.91 5980896.20 n70 20 59.973 w148 11 28.9~ 5980928.46 n70 21 0.281 w148 11 28.0~ 5980961.34 n70 21 0.595 w148 11 27.01 5980994.76 n70 21 0.914 w148 11 26.1, Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 4 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 4800.00 68.43 44.39 979.87 1058.73 4211.92 4151.82 2.922 722870.56 5981028.69 n70 21 1.239 w148 11 25.1 4850.00 69.45 44.08 1013.30 1091.28 4229.89 4169.79 2.122 722902.11 5981063.07 n70 21 1.567 w148 11 24.2 4900.00 70.54 43.41 1047.25 1123.76 4246.99 4186.89 2.510 722933.57 5981097.95 n70 21 1.901 w148 11 23.2 4950.00 71.13 43.20 1081.61 1156.16 4263.40 4203.30 1.247 722964.94 5981133.26 n70 21 2.239 w148 11 22.3 4998.00 70.69 42.13 1114.97 1186.90 4279.10 4219.00 2.304 722994.68 5981167.51 n70 21 2.567 w148 11 21.4 5000.00 70.52 43.29 1116.35 1188.18 4279.77 4219.67 55.219 722995.91 5981168.94 n70 21 2.581 w148 11 21.4 5100.00 71.21 43.60 1184.95 1253.14 4312.54 4252.44 0.746 723058.82 5981239.42 n70 21 3.255 w148 11 19.5 5150.00 71.52 43.77 1219.21 1285.87 4328.52 4268.42 0.701 723090.51 5981274.63 n70 21 3.592 w148 11 18.5 5200.00 70.95 43.79 1253.39 1318.62 4344.60 4284.50 1.151 723122.24 5981309.77 n70 21 3.928 w148 11 17.5 5250.00 70.61 43.71 1287.50 1351.27 4361.06 4300.96 0.691 723153.86 5981344.82 n70 21 4.264 w148 11 16.6 5300.00 71.03 43.73 1321.63 1383.90 4377.49 4317.39 0.841 723185.47 5981379.90 n70 21 4.599 w148 11 15.6 5350.00 71.31 43.72 1355.83 1416.61 4393.63 4333.53 0.561 723217.15 5981415.06 n70 21 4.936 w148 11 14.7 5400.00 71.76 44.04 1390.01 1449.49 4409.47 4349.37 1.100 723249.00 5981450.20 n70 21 5.272 w148 11 13.7 5450.00 71.87 44.28 1424.09 1482.58 4425.07 4364.97 0.497 723281.07 5981485.24 n70 21 5.607 w148 11 12.2 5500.00 71.30 44.16 1458.09 1515.67 4440.86 4380.76 1.168 723313.13 5981520.20 n70 21 5.941 w148 11 11.~ 5550.00 71.13 44.19 1492.04 1548.65 4456.96 4396.86 0.341 723345.10 5981555.11 n70 21 6.275 w148 11 10.~ 5600.00 70.91 44.05 1525.99 1581.57 4473.23 4413.13 0.521 723376.99 5981590.01 n70 21 6.609 w148 11 9.S 5650.00 70.62 43.72 1560.01 1614.29 4489.70 4429.60 0.839 723408.69 5981624.99 n70 21 6.943 w148 11 5700.00 70.30 43.46 1594.14 1646.78 4506.42 4446.32 0.798 723440.15 5981660.06 n70 21 7.279 w148 11 8.C 5750.00 70.32 43.09 1628.41 1679.06 4523.27 4463.17 0.698 723471.40 5981695.27 n70 21 7.616 w148 11 5800.00 70.33 42.88 1662.85 1711.16 4540.10 4480.00 0.409 723502.46 5981730.65 n70 21 7.955 w148 11 6.1 5850.00 70.46 42.44 1697.49 1743.07 4556.88 4496.78 0.866 723533.34 5981766.22 n70 21 8.295 w148 11 5.1 5900.00 71.72 41.57 1732.64 1774.72 4573.08 4512.98 3.013 723563.93 5981802.29 n70 21 8.641 w148 11 4.2 5950.00 72.58 40.85 1768.45 1806.08 4588.40 4528.30 2.199 723594.22 5981839.00 n70 21 8.993 w148 11 3.3 6000.00 72.89 40.94 1804.54 1837.34 4603.24 4543.14 0.630 723624.39 5981876.00 n70 21 9.348 w148 11 2.4 6050.00 73.34 41.07 1840.64 1868.73 4617.77 4557.67 0.928 723654.70 5981913.02 n70 21 9.703 w148 11 1.5 6100.00 73.06 41.01 1876.75 1900.16 4632.22 4572.12 0.554 723685.04 5981950.04 n70 21 10.058 w148 11 0.5 6150.00 73.51 41.16 1912.84 1931.63 4646.60 4586.50 0.931 723715.43 5981987.04 n70 21 10.413 w148 10 59.6 6200.00 73.69 41.29 1948.92 1963.24 4660.71 4600.61 0.452 723745.96 5982024.04 n70 21 10.767 w148 10 58.7 6250.00 72.91 41.32 1984.89 1994.85 4675.08 4614.98 1.567 723776.49 5982060.93 n70 21 11.121 w148 10 57.8 6300.00 72.80 41.33 2020.77 2026.40 4689.82 4629.72 0.220 723806.96 5982097.73 n70 21 11.474 w148 10 56.9 6350.00 72.50 41.38 2056.60 2057.93 4704.73 4644.63 0.609 723837.42 5982134.47 n70 21 11.826 w148 10 55.9 6400.00 72.12 41.45 2092.32 2089.45 4719.93 4659.83 0.773 723867.86 5982171.10 n70 21 12.177 w148 10 55.0 6450.00 72.02 41.36 2128.00 2120.91 4735.32 4675.22 0.258 723898.25 5982207.70 n70 21 12.528 w148 10 54.1 6500.00 71.70 41.24 2163.69 2152.27 4750.89 4690.79 0.688 723928.54 5982244.30 n70 21 12.879 w148 10 53.2 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB2 Date: 20:55, 06 Aug 98 Page: 5 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 6550.00 72.07 41.32 6600.00 72.28 41.50 6650.00 72.80 41.69 6700.00 72.77 41.90 6750.00 72.34 42.07 6800.00 71.97 42.14 6850.00 70.80 42.34 6900.00 69.97 42.45 6950.00 69.50 42.39 7000.00 69.13 42.43 7050.00 67.87 42.38 7100.00 68.25 42.29 7150.00 69.39 42.36 7200.00 70.20 42.30 7250.00 69.86 42.15 7300.00 70.82 42.11 7350.00 71.14 42.06 7400.00 71.97 42.02 7450.00 72.67 41.99 7500.00 71.93 41.77 7550.00 72.36 42.12 7600.00 72.21 43.06 7650.00 72.09 43.66 7700.00 72.16 44.34 7750.00 71.64 44.71 7800.00 72.11 45.05 7850.00 71.74 45.11 7900.00 71.54 45.29 7950.00 71.66 45.60 7989.00 72.17 46.63 8000.00 71.74 45.79 8050.00 72.30 46.36 8100.00 72.00 46.86 8150.00 72.45 47.00 8200.00 72.57 46.95 North (ft) 2199.40 2235.10 2270.77 2306.38 2341.84 2377.15 2412.22 2447.01 2481.63 2516.17 2550.52 2584.80 2619.27 2653.96 2688.76 2723.68 2758.76 2793.98 2829.38 2864.84 2900.24 2935.31 2969.91 3004.14 3038.03 3071.70 3105.26 3138.70 3171.99 3197.69 3204.92 3237.92 3270.61 3303.13 3335.66 East TVD(BRT) TVD(SS) (ft) 2183.62 2215.11 2246.77 2278.60 2310.51 2342.42 2374 28 2406 03 2437 67 2469 22 2500 59 2531 83 2563.22 2594.82 2626.40 2657.99 2689.67 2721.44 2753.32 2785.11 2816.92 2849.16 2881.83 2914.89 (ft) 4766.44 4706.34 4781.74 4721.64 4796.75 4736.65 4811.54 4751.44 4826.53 4766.43 4841.86 4781.76 4857.82 4797.72 4874.60 4814.50 4891.92 4831.82 4909.59 4849.49 4927.91 4867.81 4946.59 4886.49 4964.65 4904.55 4981.92 4921.82 4999.00 4938.90 5015.82 4955.72 5032.11 4972.01 5047.93 4987.83 5063.12 5003.02 5078.32 5018.22 5093.65 5033.55 5108.86 5048.76 5124.19 5064.09 5139.53 5079.43 DLS (ft) (deg/100ft) 0.765 0.537 1.100 0.414 0.906 0.760 2.372 1.671 0.942 0.753 2.506 0.779 2.270 1.629 0.725 1.909 0.662 1.652 1.402 1.535 1.075 1.820 1.168 1.310 Easting (feet) 723958.82 723989.23 724019.82 724050.59 724081 43 724112 28 724143 08 724173 79 724204 39 724234 90 724265 24 724295 45 724325.81 724356.36 724386.90 724417.44 724448.07 724478.77 724509.59 724540.32 724571.07 724602.25 724633.88 724665.91 2948.21 2981.74 3015.40 3049.08 3082.88 3109.60 3117.15 3151.40 3185.99 3220.77 3255.64 5155.07 5094.97 5170.62 5110.52 5186.13 5126.03 5201.88 5141.78 5217.66 5157.56 5229.77 5169.67 5233.18 5173.08 5248.61 5188.51 5263.94 5203.84 5279.20 5219.10 5294.23 5234.13 1.237' 724698.22 1.147 724730.74 0.746 724763.39 0.522 724796.05 0.628 724828.86 2.826 724854.80 8.254 724862.13 1.560 724895.39 1.131 724928.99 0.938 724962.80 0.266 724996.68 Northing Latitude Longitu (feet) Deg Min Sec Deg Min S 5982280.93 n70 21 13.230 w148 10 52.3 5982317.54 n70 21 13.581 w148 10 51.3 5982354.13 n70 21 13.932 w148 10 50.4 5982390.66 n70 21 14.282 w148 10 49.5 5982427.04 n70 21 14.631 w148 10 48.5 5982463.28 n70 21 14.978 w148 10 47.6 5982499.28 n70 21 15.323 w148 10 46.7 5982534.99 n70 21 15.665 w148 10 45.8 5982570.54 n70 21 16.005 w148 10 44.8 5982605.99 n70 21 16.345 w148 10 43.9 5982641.25 n70 21 16.682 w148 10 43.0 5982676.44 n70 21 17.019 w148 10 42.1 5982711.82 n70 21 17.358 w148 10 41.2 5982747.43 n70 21 17.699 w148 10 40.2 5982783.15 n70 21 18.042 w148 10 39.3 5982818.98 n70 21 18.385 w148 10 38.4 5982854.99 n70 21 18.730 w148 10 37.5 5982891.13 n70 21 19.076 w148 10 36.5 5982927.46 n70 21 19.424 w148 10 35.~ 5982963.85 n70 21 19.773 w148 10 34.7 5983000.17 n70 21 20.121 w148 10 33.7 5983036.17 nT0 21 20.466 w148 10 32.8 5983071.73 n70 21 20.806 w148 10 31.8 5983106.92 n70 21 21.142 w148 10 30.9 5983141.77 n70 21 21.475 w148 10 29.9 5983176.42 n70 21 21.806 w148 10 28.9 5983210.96 n70 21 22.136 w148 10 27.9 5983245.38 n70 21 22.465 w148 10 27.0 5983279.65 n70 21 22.792 w148 10 26.0 5983306.13 n70 21 23.045 w148 10 25.2 5983313.59 n70 21 23.116 w148 10 25.0 5983347.58 n70 21 23.440 w148 10 24.0 5983381.28 n70 21 23.762 w148 10 22.9 5983414.81 n70 21 24.081 w148 10 21.9 5983448.36 n70 21 24.401 w148 10 20.9 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 6 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longit~ (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min ~ 8250.00 72.22 46.63 3368.29 3290.37 5309.35 5249.25 0.933 725030.44 5983482.01 n70 21 24.722 w148 10 19.9 8300.00 72.35 46.78 3400.95 3325.04 5324.56 5264.46 0.381 725064 12 5983515.68 n70 21 25.043 w148 10 18.9 8350.00 72.43 47.38 3433.41 3359.94 5339.68 5279.58 1.159 725098 04 5983549.15 n70 21 25.362 w148 10 17.9 8400.00 72.43 47.45 3465.66 3395.04 5354.78 5294.68 0.130 725132 17 5983582.43 n70 21 25.679 w148 10 16.8 8450.00 71.97 47.26 3497.91 3430.05 5370.06 5309.96 0.972 725166 21 5983615.70 n70 21 25.996 w148 10 15.8 8500.00 71.77 47.34 3530.14 3464.98 5385.62 5325.52 0.446 725200 17 5983648.94 n70 21 26.313 w148 10 14.8 8550.00 72.32 47.47 3562.33 3499.99 5401.04 5340.94 1.125 725234 21 5983682.15 n70 21 26.629 w148 10 13.8 8600.00 72.23 47.67 3594.46 3535.14 5416.26 5356.16 0.420 725268.39 5983715.31 n70 21 26.945 w148 10 12.7 8650.00 72.86 48.19 3626.42 3570.55 5431.26 5371.16 1.604 725302.84 5983748.30 n70 21 27.259 w148 10 11.7 8700.00 72.58 48.37 3658.19 3606.19 5446.11 5386.01 0.655 725337.52 5983781.11 n70 21 27.572 w148 10 10.7 8750.00 72.41 48.45 3689.84 3641.85 5461.15 5401.05 0.374 725372.23 5983813.81 n70 21 27.883 w148 10 9.6 8800.00 72.54 48.48 3721.46 3677.54 5476.21 5416.11 0.275 725406.96 5983846.46 n70 21 28.194 w148 10 8.6 8850.00 72.40 48.32 3753.11 3713.20 5491.27 5431.17 0.408 725441.67 5983879.15 n70 21 28.505 w148 10 7.5 8900.00 72.45 48.15 3784.86 3748.75 5506.37 5446.27 0.336 725476.27 5983911.94 n70 21 28.817 w148 10 6.5 8950.00 72.08 48.13 3816.64 3784.22 5521.60 5461.50 0.738 725510.78 5983944.75 n70 21 29.129 w148 10 5.5 9000.00 72.47 48.26 3848.38 3819.72 5536.83 5476.73 0.818 725545 32 5983977.53 n70 21 29.441 w148 10 4.4 9050.00 72.63 48.41 3880.09 3855.36 5551.82 5491.72 0.441 725580 9100.00 72.24 48.35 3911.75 3891.00 5566.91 5506.81 0.791 725614 9150.00 72.22 48.21 3943.44 3926.54 5582.16 5522.06 0.274 725649 9200.00 72.48 48.41 3975.13 3962.12 5597.32 5537.22 0.649 725683 9250.00 72.50 48.68 4006.70 3997.85 5612.36 5552.26 0.525 725718 9300.00 72.17 48.54 4038.19 4033.60 5627.54 5567.44 0.713 725753 00 5984010.28 n70 21 29.753 w148 10 3.4 68 5984042.98 n70 21 30.064 w148 10 2.2 27 5984075.70 n70 21 30.376 w148 10 1.2 89 5984108.43 n70 21 30.687 w148 10 0.2 68 5984141.04 n70 21 30.997 w148 9 59.2 47 5984173.58 n70 21 31.307 w148 9 58.~ 9350.00 71.91 48.30 4069.76 4069.18 5642.95 5582.85 0.685 725788.10 5984206.19 n70 21 31.617 w148 9 57.1 9400.00 72.02 48.16 4101.43 4104.64 5658.43 5598.33 0.339 725822.61 5984238.89 n70 21 31.928 w148 9 56.1 9450.00 72.23 48.13 4133.18 4140.09 5673.77 5613.67 0.425 725857.10 5984271.68 n70 21 32.240 w148 9 55.C 9500.00 72.33 48.19 4164.95 4175.57 5688.99 5628.89 0.227 725891.62 5984304.48 n70 21 32.553 w148 9 54.0 9550.00 72.77 48.40 4196.69 4211.18 5703.98 5643.88 0.964 725926.28 5984337.26 n70 21 32.865 w148 9 53.0 9600.00 72.38 48.25 4228.41 4246.81 5718.95 5658.85 0.830 725960.95 5984370.02 n70 21 33.176 w148 9 51.9 9650.00 72.97 48.08 4260.25 4282.37 5733.83 5673.73 1.218 725995.56 5984402.89 n70 21 33.489 w148 9 50.9 9700.00 72.95 47.85 4292.26 4317.88 5748.49 5688.39 0.431 726030.10 5984435.94 n70 21 33.804 w148 9 49.8 9750.00 72.95 47.70 4324.38 4353.28 5763.15 5703.05 0.285 726064.53 5984469.09 n70 21 34.120 w148 9 48.8 9800.00 73.06 47.81 4356.53 4388.68 5777.76 5717.66 0.288 726098.96 5984502.27 n70 21 34.436 w148 9 47.8 9850.00 72.54 48.42 4388.42 4424.23 5792.55 5732.45 1.562 726133.55 5984535.20 n70 21 34.749 w148 9 46.7 9900.00 72.77 48.66 4420.02 4460.00 5807.46 5747.36 0.655 726168.37 5984567.84 n70 21 35.060 w148 9 45.7 9950.00 72.40 48.76 4451.50 4495.85 5822.42 5762.32 0.757 726203.27 5984600.37 n70 21 35.369 w148 9 44.6 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 7 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu, (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min 10000.00 72.31 48.74 4482.91 4531.67 5837.58 5777.48 0.193 726238.14 5984632.83 n70 21 35.678 w148 9 43.61 10050.00 72.16 48.72 4514.32 4567.46 5852.83 5792.73 0.303 726272.99 5984665.28 n70 21 35.986 w148 9 42.5: 10100.00 71.94 49.21 4545.55 4603.34 5868.24 5808.14 1.025 726307.92 5984697.56 n70 21 36.293 w148 9 41.5, 10150.00 72.20 49.92 4576.41 4639.55 5883.63 5823.53 1.452 726343.20 5984729.47 n70 21 36.597 w148 9 40.41 10200.00 72.27 50.04 4607.03 4676.01 5898.89 5838.79 0.260 726378.74 5984761.15 n70 21 36.898 w148 9 39.41 10250.00 72.32 50.06 4637.61 4712.53 5914.10 5854.00 0.110 726414.33 5984792.81 n70 21 37.198 w148 9 38.3, 10300.00 72.72 50.20 4668.18 4749.13 5929.11 5869.01 0.852 726450.01 5984824.44 n70 21 37.499 w148 9 37.2' 10350.00 72.36 50.10 4698.75 4785.75 5944.11 5884.01 0.742 726485.71 5984856.08 n70 21 37.799 w148 9 36.21 10400.00 72.92 50.14 4729.34 4822.37 5959.03 5898.93 1.124 726521.41 5984887.74 n70 21 38.100 w148 9 35.11 10450.00 72.41 50.15 4759.93 4859.01 5973.93 5913.83 1.030 726557.13 5984919.40 n70 21 38.400 w148 9 34.0, 10500.00 72.46 50.26 4790.44 4895.64 5989.02 5928.92 0.239 726592.83 5984950.98 n70 21 38.700 w148 9 32.9~ 10550.00 72.46 50.47 4820.85 4932.35 6004.09 5943.99 0.389 726628.63 5984982.46 n70 21 38.999 w148 9 31.91 10600.00 72.02 50.43 4851.17 4969.07 6019.34 5959.24 0.893 726664 43 5985013.86 n70 21 39.297 w148 9 30.8 10650.00 72.42 50.39 4881.52 5005.76 6034.61 5974.51 0.819 726700 10700.00 72.76 50.39 4911.93 5042.52 6049.56 5989.46 0.666 726736 10750.00 72.91 50.49 4942.36 5079.35 6064.32 6004.22 0.348 726771 10800.00 72.97 50.60 4972.73 5116.26 6078.99 6018.89 0.262 726807 10850.00 72.60 50.95 5002.93 5153.26 6093.79 6033.69 0.997 726844 10900.00 72.60 51.18 5032.92 5190.37 6108.74 6048.64 0.450 726880 10950.00 73.37 51.37 5062.83 5227.67 6123.37 6063.27 1.582 726916 11000.00 73.80 51.29 5092.79 5265.12 6137.50 6077.40 0.873 726953 11050.00 73.30 50.47 5123.05 5302.32 6151.66 6091.56 1.861 726989 20 5985045.27 n70 21 39.595 w148 9 29.7 04 5985076.76 n70 21 39.894 w1489 28.6 95 5985108.26 n70 21 40.193 w148 9 27.6 95 5985139.71 n70 21 40.491 w148 9 26.5 03 5985170.99 n70 21 40.788 w148 9 25.4 24 5985202.06 n70 21 41.083 w148 9 24.3 64 5985233.06 n70 21 41.377 w148 9 23.2 18 5985264.12 n70 21 41.671 w148 9 22.1 47 5985295.47 n70 21 41.968 w148 9 21.0 11100.00 72.90 50.35 5153.54 5339.19 6166.19 6106.09 0.832 727025.42 5985327.03 n70 21 42.268 w148 9 20.0 11150.00 73.77 50.76 5183.97 5376.18 6180.53 6120.43 1.907 727061.49 5985358.54 n70 21 42.567 w148 9 18.9 11200.00 74.29 51.34 5214.19 5413.56 6194.29 6134.19 1.521 727097.96 5985389.85 n70 21 42.864 w148 9 17.8. 11250.00 74.40 51.61 5244.18 5451.22 6207.78 6147.68 0.578 727134.72 5985420.94 n70 21 43.159 w148 9 16.71 11300.00 73.80 51.62 5274.03 5488.92 6221.48 6161.38 1.198 727171.51 5985451.90 n70 21 43.452 w148 9 15.61 11350.00 73.64 51.88 5303.75 5526.61 6235.49 6175.39 0.583 727208.31 5985482.71 n70 21 43.744 w148 9 14.51 11400.00 74.53 51.97 5333.40 5564.46 6249.20 6189.10 1.773 727245.26 5985513.47 n70 21 44.035 w148 9 13.41 11450.00 74.77 52.11 5363.06 5602.48 6262.44 6202.34 0.556 727282.38 5985544.24 n70 21 44.327 w148 9 12.31 11500.00 75.29 52.13 5392.72 5640.60 6275.35 6215.25 1.033 727319.61 5985575.02 n70 21 44.618 w148 9 11.1! 11550.00 75.14 52.41 5422.30 5678.84 6288.11 6228.01 0.616 727356.95 5985605.72 n70 21 44.909 w148 9 10.0' 11600.00 74.57 52.68 5451.65 5717.15 6301.18 6241.08 1.260 727394.38 5985636.19 n70 21 45.197 w148 9 8.9! 11650.00 74.50 52.83 5480.81 5755.52 6314.51 6254.41 0.315 727431.86 5985666.47 n70 21 45.484 w148 9 7.8~ 11700.00 74.28 52.81 5509.92 5793.88 6327.96 6267.86 0.441 727469.35 5985696.69 n70 21 45.770 w148 9 6.7( Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB2 Date: 20:55, 06 Aug 98 Page: 8 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 11750.00 74.58 52.61 5539.10 5832.20 11800.00 73.94 52.09 5568.49 5870.31 11850.00 74.24 51.99 5598.07 5908.22 11900.00 74.07 52.32 5627.58 5946.20 11950.00 73.90 52.37 5656.94 5984.25 12000.00 73.98 52.44 5686.25 6022.33 12050.00 73.79 52.79 5715.42 6060.49 12100.00 73.79 52.47 5744.56 6098.65 12150.00 73.71 51.81 5774.01 6136.55 12200.00 73.57 51.27 5803.85 6174.12 12250.00 74.12 51.07 5833.97 6211.53 12300.00 73.86 50.25 5864.43 6248.70 12350.00 73.90 50.18 5895.17 6285.61 12400.00 73.68 50.24 5925.89 6322.51 12450.00 73.24 50.24 5956.55 6359.35 12500.00 73.49 50.28 5987.17 6396.19 12550.00 72.80 50.38 6017.72 6433.03 12600.00 72.51 50.71 6048.05 6469.88 12650.00 72.62 51.10 6078.13 6506.90 12700.00 72.23 51.21 6108.03 6544.03 12750.00 72.22 51.19 6137.86 6581.13 12800.00 72.15 51.27 6167.67 6618.25 12850.00 71.61 51.15 6197.44 6655.28 12900.00 71.87 51.07 6227.25 6692.24 12950.00 71.40 50.00 6257.41 6728.88 13000.00 71.63 49.38 6288.09 6765.03 13050.00 71.71 49.59 6318.93 6801.12 13100.00 71.50 49.13 6349.83 6837.12 13150.00 71.70 49.09 6380.89 6872.98 13200.00 71.34 49.00 6411.97 6908.80 13250.00 71.29 49.04 6443.03 6944.56 13300.00 71.00 48.85 6474.11 6980.24 13350.00 71.69 48.63 6505.35 7015.85 13400.00 71.91 48.50 6536.78 7051.46 13450.00 71.46 48.65 6568.19 7087.05 TVD(BRT) TVD(SS) DLS (ft) (ft) (deg/100ft) 6341.38 6281.28 0.693 6354.95 6294.85 1.622 6368.66 6308.56 0.631 6382.31 6322.21 0.717 6396.10 6336.00 0.349 6409.93 6349.83 0.198 6423.81 6363.71 0.780 6437.77 6377.67 0.613 6451.76 6391.66 1.270 6465.84 6405.74 1.088 6479.75 6419.65 1.180 6493.54 6433.44 1.663 6507.43 6447.33 0.156 6521.38 6461.28 0.445 6535.62 6475.52 0.896 6549.93 6489.83 0.509 6564.43 6504.33 1.385 6579.33 6519.23 0.865 6594.31 6534.21 0.770 6609.41 6549.31 0.804 6624.68 6564.58 0.040 6639.98 6579.88 0.208 6655.53 6595.43 1.086 6671.19 6611.09 0.533 6686.94 6626~84 2.247 6702.80 6642.70 1.265 6718.52 6658.42 0.435 6734.30 6674.20 0.963 6750.08 6689.98 0.412 6765.93 6705.83 0.737 6781.94 6721.84 0.135 6798.10 6738.00 0.670 6814.09 6753.99 1.437 6829.71 6769.61 0.506 6845.42 6785.32 0.943 Easting (feet) 727506.78 727544.00 727581.02 727618.11 727655.27 727692.46 727729.74 727767.02 727804.03 727840.70 727877.20 727913.45 727949.43 727985.40 728021.32 728057.24 728093.15 728129.08 728165.20 728201.42 728237.63 728273.84 728309.98 728346.04 728381.76 728416.99 728452.14 728487.21 728522.14 728557.02 728591.84 728626.59 728661.26 728695.92 728730.57 Northing (feet) Deg Min 5985726.99 n70 21 46.056 w148 5985757.50 n70 21 46.345 w148 5985788.18 n70 21 46.636 w148 5985818.81 n70 21 46.926 w148 5985849.28 n70 21 47.214 w148 5985879.70 n70 21 47.502 w148 5985909.99 n70 21 47.789 w148 5985940.24 n70 21 48.075 w148 5985970.81 n70 21 48.364 w148 5986001.74 n70 21 48.657 w148 5986032.95 n70 21 48.953 w148 5986064.50 n70 21 49.253 w148 5986096.31 n70 21 49.555 w148 5986128.12 n70 21 49.856 w148 5986159.85 n70 21 50.158 w148 5986191.55 n70 21 50.459 w148 5986223.17 n70 21 50.759 w148 5986254.58 n70 21 51.057 w148 5986285.74 n70 21 51.352 w148 5986316.72 n70 21 51.646 w148 5986347.64 n70 21 51.939 w148 5986378.53 n70 21 52.232 w148 5986409.38 n70 21 52.524 w148 5986440.27 n70 21 52.817 w148 5986471.51 n70 21 53.113 w148 5986503.24 n70 21 53.415 w148 5986535.13 n70 21 53.718 w148 5986567.08 n70 21 54.021 w148 5986599.18 n70 21 54.326 w148 5986631.31 n70 21 54.632 w148 5986663.42 n70 21 54.937 w148 5986695.53 n70 21 55.242 w148 5986727.81 n70 21 55.549 w148 5986760.29 n70 21 55.858 w148 5986792.73 n70 21 56.167 w148 Latitude Longit~ Sec Deg Min ~c 9 5.5 9 4.4 9 3.3 9 2.2 9 1.1 9 0.0 8 58.9 8 57.7 8 56.6 8 55.5 8 54.4 8 53.4 8 52.3 8 51.2 8 50.1 8 49.C 8 48.C 8 46.6 8 45.~ 8 44.5 8 43.( 8 42.5 8 41.5 8 40.4 8 39.3 8 38.2 8 37.2 8 36.1 8 35.1 8 34.0 8 33.0 8 31.9 8 30.9 8 29.9 8 28.8 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 9 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 13500.00 71.71 48.74 6599.50 7122.69 6861.21 6801.11 0.531 728765.26 5986825.08 n70 21 56.474 w148 8 27.8 13550.00 72.13 48.85 6630.81 7158.45 6876.73 6816.63 0.860 728800.08 5986857.44 n70 21 56.782 w148 8 26.7 13600.00 72.23 48.78 6662.16 7194.28 6892.03 6831.93 0.248 728834.96 5986889.83 n70 21 57.090 w148 8 25.7 13650.00 72.14 48.86 6693.50 7230.10 6907.33 6847.23 0.231 728869.84 5986922.22 n70 21 57.398 w148 8 24.6 13700.00 72.28 48.86 6724.82 7265.96 6922.60 6862.50 0.268 728904.75 5986954.59 n70 21 57.705 w148 8 23.6 13750.00 72.99 49.05 6756.16 7301.95 6937.53 6877.43 1.467 728939.79 5986986.97 n70 21 58.013 w148 8 22.5 13800.00 72.60 49.01 6787.48 7338.01 6952.31 6892.21 0.771 728974.91 5987019.34 n70 21 58.321 w148 8 21.5 13850.00 72.45 48.98 6818.77 7374.00 6967.33 6907.23 0.320 729009.96 5987051.69 n70 21 58.628 w148 8 20.4 13900.00 72.06 48.95 6850.03 7409.92 6982.57 6922.47 0.772 729044.94 5987084.00 n70 21 58.935 w148 8 19.4 13950.00 71.73 48.96 6881.24 7445.77 6998.11 6938.01 0.668 729079.84 5987116.25 n70 21 59.242 w148 8 18.3 14000.00 71.93 49.34 6912.31 7481.70 7013.70 6953.60 0.831 729114.84 5987148.37 n70 21 59.547 w148 8 17.3 14050.00 72.27 49.76 6943.18 7517.91 7029.07 6968.97 1.049 729150.12 5987180.29 n70 21 59.850 w148 8 16.2 14100.00 72.28 49.72 6973.95 7554.26 7044.29 6984.19 0.094 729185.53 5987212.13 n70 22 0.153 w148 8 15.1 14150.00 71.97 ~49.98 7004.64 7590.63 7059.64 6999.54 0.798 729220.98 5987243.87 n70 22 0.454 w148 8 14.1 14200.00 72.31 50.31 7035.14 7627.16 7074.98 7014.88 0.927 729256.59 5987275.44 n70 22 0.754 w148 8 13.0 14250.00 72.72 50.55 7065.51 7663.93 7090 00 7029.90 0.941 729292.44 5987306.89 n70 22 1.052 w148 8 11.9 14300.00 72.21 50.54 7095.81 7700.74 7105 06 7044.96 1.016 729328.33 5987338.26 n70 22 1.350 w148 8 10.9 14350.00 72.15 50.33 7126.13 7737.43 7120 36 7060.26 0.422 729364.12 5987369.65 n70 22 1.647 w148 8 9.2 14400.00 71.86 50.42 7156.46 7774.06 7135 81 7075.71 0.617 729399.83 5987401.05 n70 22 1.945 w148 8 8.7 14450.00 72.03 50.43 7186.74 7810.70 7151 31 7091.21 0.350 729435.56 5987432.41 n70 22 2.243 w148 8 7.~ 14500.00 72.77 50.61 7217.04 7847.49 7166 43 7106.33 1.516 729471.43 5987463.78 n70 22 2.540 w148 8 6.~ 14550.00 72.25 50.74 7247.26 7884.38 7181.46 7121.36 1.071 729507.41 5987495.08 n70 22 2.837 w148 8 5.5 14600.00 72.32 50.94 7277.34 7921.31 7196.67 7136.57 0.409 729543.43 5987526.23 n70 22 3.133 w148 8 4.4 14650.00 72.08 50.98 7307.33 7958.29 7211.96 7151.86 0.485 729579.50 5987557.30 n70 22 3.427 w148 8 3.3 14700.00 71.81 50.96 7337.26 7995.21 7227.45 7167.35 0.549 729615.52 5987588.31 n70 22 3,721 w148 8 2.2 14750.00 72.07 51.09 7367.16 8032.17 7242.96 7182.86 0.576 729651.57 5987619.29 n70 22 4.015 w148 8 1.1 14800.00 71.57 51.38 7396.90 8069.21 7258.56 7198.46 1.135 729687.72 5987650.12 n70 22 4.307 w148 8 0.1 14850.00 72.20 51.37 7426.57 8106.34 7274.11 7214.01 1.254 729723.95 5987680.86 n70 22 4.598 w148 7 59.0 14900.00 72.56 51.75 7456.20 8143.66 7289.24 7229.14 1.026 729760.37 5987711.58 n70 22 4.889 w148 7 57.9 14950.00 72.10 51.87 7485.65 8181.10 7304.42 7244.32 0.949 729796.93 5987742.13 n70 22 5.179 w148 7 56.8 15000.00 72.54 51.91 7515.05 8218.59 7319.60 7259.50 0.891 729833.52 5987772.63 n70 22 5.467 w148 7 55.7 15050.00 72.50 51.81 7544.51 8256.10 7334.62 7274.52 0.203 729870.14 5987803.18 n70 22 5.757 w148 7 54.6 15100.00 72.18 51.89 7573.94 8293.56 7349.79 7289.69 0.651 729906.72 5987833.70 n70 22 6.046 w148. 7 53.5 15150.00 72.12 52.42 7603.13 8331.15 7365.11 7305.01 1.014 729943.42 5987864.00 n70 22 6.332 w148 7 52.4 15200.00 72.39 52.51 7632.15 8368.91 7380.35 7320.25 0.550 729980.31 5987894.12 n70 22 6.617 w148 7 51.3 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB2 Date: 20:55, 06 Aug 98 Page: 10 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East (ft) (deg) (deg) (ft) (ft) 15250.00 72.97 52.78 7661.11 8406.85 15300.00 72.93 52.93 7689.98 8444.95 15350.00 72.57 53.16 7718.69 8483.11 15400.00 72.96 53.28 7747.28 8521.36 15450.00 72.30 53.45 7775.75 8559.65 15500.00 71.96 53.52 7804.07 8597.90 15550.00 71.80 53.58 7832.30 8636.12 15600.00 71.82 53.36 7860.58 8674.29 15650.00 72.39 53.11 7889.06 8712.41 15700.00 72.51 52.85 7917.76 8750.47 15750.00 72.53 52.76 7946.59 8788.46 15800.00 72.30 52.77 7975.43 8826.41 15850.00 72.20 52.70 8004.27 8864.31 15900.00 72.59 51.86 8033.42 8902.00 15950.00 72.48 51.12 8063.12 8939.33 16000.00 72.50 51.22 8093.02 8976.47 16050.00 72.51 51.24 8122.87 9013.66 16100.00 72.36 51.19 8152.73 9050.81 16150.00 72.52 50.97 8182.68 9087.90 16200.00 72.07 50.75 8212.75 9124.85 16250.00 72.15 50.69 8242.87 9161.68 16300.00 71.92 50.53 8273.06 9198.44 16350.00 72.20 50.47 8303.31 9235.14 16400.00 72.65 50.39 8333.67 9271.89 16450.00 72.37 50.26 8364.12 9308.59 16500.00 72.65 50.22 8394.62 9345.25 16550.00 72.82 50.04 8425.23 9381.89 16600.00 73.02 49.99 8455.95 9418.51 16650.00 73.02 49.91 8486.72 9455.12 16700.00 72.74 49.81 8517.52 9491.65 16750.00 72.84 49.67 8548.39 9528.09 16800.00 72.58 49.59 8579.31 9564.47 16850.00 72.25 49.77 8610.16 9600.81 16900.00 72.33 49.73 8640.93 9637.16 16950.00 72.48 50.26 8671.57 9673.67 TVD(BRT) TVD(SS) DLS Easting (ft) (ft) (deg/100ft) (feet) 7395.24 7335.14 1.279 730017.37 7409.90 7349.80 0.295 730054.60 7424.72 7364.62 0.850 730091.89 7439.54 7379.44 0.807 730129.28 7454.47 7394.37 1.358 730166.71 7469.81 7409.71 0.685 730204.10 7485.36 7425.26 0.332 730241.47 7500.97 7440.87 0.406 730278.78 7516.33 7456.23 1.229 730316.04 7531.41 7471.31 0.552 730353.23 7546.43 7486.33 0.172 730390.35 7561.53 7501.43 0.460 730427.42 7576.78 7516.68 0.246 730464.45 7591.90 7531.80 1.786 730501.27 7606.91 7546.81 1.424 730537.69 7621.95 7561.85 0.191 730573.94 7636.98 7576.88 0.044 730610.22 7652.07 7591.97 0.315 730646.47 7667.16 7607.06 0.526 730682.66 7682.36 7622.26 1.008 730718.69 7697.72 7637.62 0.201 730754.61 7713.14 7653.04 0.550 730790.46 7728.55 7668.45 0.579 730826.25 7743.64 7683.54 0.913 730862.08 7758.67 7698.57 0.613 730897.87 7773.69 7713.59 0.563 730933.61 7788.53 7728.43 0.478 730969.33 7803.22 7743.12 0.410 731005.02 7817.82 7757.72 0.153 731040.70 7832.54 7772.44 0.585 731076.30 7847.33 7787.23 0.346 731111.81 7862.19 7802.09 0.539 731147.25 7877.29 7817.19 0.750 731182.66 7892.50 7832.40 0.175 731218.09 7907.62 7847.52 1.051 731253.67 Northing (feet) Deg Min 5987924.19 n70 22 5987954.17 n70 22 5987983.99 n70 22 5988013.70 n70 22 5988043.29 n70 22 5988072.73 n70 22 5988102.08 n70 22 5988131.48 n70 22 5988161.07 n70 22 5988190.89 n70 22 5988220.83 n70 22 5988250.78 n70 22 Latitude Longitu Sec Deg Min S 6.902 w148 7 50.2 7.185 w148 7 49.1 7.467 w148 7 47.9 7.748 w148 7 46.8 8.027 w148 7 45.7 8.306 w148 7 44.6 8.583 w148 7 43.5 8.860 w148 7 42.3 9.140 w148 7 41.2 9.422 w148 7 40.1 9.705 w148 7 39.0 9.988 w148 7 37.9 5988280.72 n70 22 10.271 w148 5988310.98 n70 22 10.558 w148 5988341.76 n70 22 10.849 w148 5988372.74 n70 22 11.143 w148 5988403.69 n70 22 11.436 w148 5988434.63 n70 22 11.729 w148 5988465.66 n70 22 12.023 w148 5988496.81 n70 22 12.319 w148 5988528.01 n70 22 12.615 w148 7 36.8 7 35.7 7 34.6 7 33.5 7 32.4 7 31.3 7 30.2 7 29.2 7 28.~ 5988559.27 n70 22 12.911 w1487 27.C 5988590.60 n70 22 13.208 w148 5988622.03 n70 22 13.506 w148 5988653.55 n70 22 13.805 w148 5988685.12 n70 22 14.105 w148 5988716.80 n70 22 14.405 w148 5988748.58 n70 22 14.707 w148 5988780.42 n70 22 15.009 w148 5988812.29 n70 22 15.312 w148 5988844.23 n70 22 15.615 w148 5988876.21 n70 22 15.918 w148 5988908.11 n70 22 16.221 w148 5988939.95 n70 22 16.523 w148 5988971.65 n70 22 16.824 w148 7 25.9 7 24.9 7 23.8 7 22.7 7 21.6 7 20.6 7 19.5 7 18.4 7 17.3 7 16.3 7 15.2 7 14.2 7 13.1 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 11 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 17000.00 72.52 50.26 8702.05 9710.34 7922.65 7862.55 0.076 731289.42 5989003.21 n70 22 17.124 w148 7 12.0 17050.00 72.92 50.32 8732.55 9747.07 7937.50 7877.40 0.810 731325.23 5989034.78 n70 22 17.423 w148 7 10.9 17100.00 72.66 50.34 8763.05 9783.84 7952.29 7892.19 0.521 731361.08 5989066.35 n70 22 17.723 w148 7 9.9 17150.00 72.72 50.26 8793.54 9820.56 7967.16 7907.06 0.185 731396.88 5989097.91 n70 22 18.022 w148 7 8.8 17200.00 72.35 50.14 8824.07 9857.21 7982.17 7922.07 0.758 731432.60 5989129.51 n70 22 18.322 w148 7 7.7 17250.00 72.38 50.16 8854.60 9893.79 7997.32 7937.22 0.067 731468.27 5989161.11 n70 22 18.622 w148 7 6.6 17300.00 72.40 50.01 8885.18 9930.34 8012.44 7952.34 0.284 731503.90 5989192.76 n70 22 18.922 w148 7 5.6 17350.00 72.16 50.04 8915.78 9966.84 8027.66 7967.56 0.472 731539.47 5989224.42 n70 22 19.222 w148 7 4.5 17400.00 72.48 49.98 8946.39 10003.34 8042.85 7982.75 0.644 731575.04 5989256.10 n70 22 19.523 w148 7 3.4 17450.00 72.11 49.94 8977.03 10039.81 8058.05 7997.95 0.749 731610.59 5989287.81 n70 22 19.824 w148 7 2.4 17500.00 72.43 49.97 9007.67 10076.27 8073.28 8013.18 0.642 731646.12 5989319.51 n70 22 20.125 w148 7 1.3 17550.00 71.92 49.95 9038.29 10112.71 8088.59 8028.49 1.021 731681.64 5989351.19 n70 22 20.425 w148 7 0.2 17600.00 72.12 50.01 9068.87 10149.13 8104.03 8043.93 0.416 731717.14 5989382.84 n70 22 20.725 w148 6 59.2 17650.00 71.76 50.02 9099.42 10185.55 8119.53 8059.43 0.713 731752.64 5989414.45 n70 22 21.025 w148 6 58.1 17687.10 71.25 49.50 9122.15 10212.41 8131.29 8071.19 1.920 731778.81 5989437.96 n70 22 21.249 w148 6 57.3 17710.70 71.06 49.70 9136.62 10229.42 8138.92 8078.82 1.136 731795.39 5989452.93 n70 22 21.391 w148 6 56.8 17805.20 68.89 50.10 9193.81 10297.33 8171.27 8111.17 2.330 731861.57 5989512.10 n70 22 21.952 w148 6 54.2 17897.10 68.01 49.00 9249.26 10362.37 8205.03 8144.93 1.468 731924.94 5989569.45 n70 22 22.497 w148 6 52.9 17992.20 68.80 48.20 9307.74 10428.70 8240.03 8179.93 1.141 731989.51 5989629.87 n70 22 23.071 w148 6 51.C 18115.20 70.21 44.40 9387.33 10511.96 8283.11 8223.01 3.113 732070.37 5989711.88 n70 22 23.853 w148 6 48.5 18210.00 70.69 44.30 9451.21 10574.41 8314.83 8254.73 0.516 732130.90 5989777.58 n70 22 24.480 w148 6 46.7 18302.00 70.52 43.40 9513.80 10634.53 8345.39 8285.29 0.941 732189.14 5989841.91 n70 22 25.095 w148 6 44.9 18395.10 70.12 45.60 9576.32 10695.97 8376.74 8316.64 2.266 732248.69 5989906.22 n70 22 25.709 w148 6 43.1 18491.60 70.07 43.20 9641.14 10759.44 8409.60 8349.50 2.339 732310.22 5989972.89 n70 22 26.345 w148 6 41.3 18583.00 71..06 41.80 9704.69 10817.67 8440.01 8379.91 1.805 732366.54 5990038.13 n70 22 26.969 w148 6 39.6 18677.60 71.62 38.80 9773.03 10875.63 8470.29 8410.19 3.062 732422.44 5990108.16 n70 22 27.641 w148 6 37.9 18771.10 72.36 36.30 9843.53 10929.81 8499.20 8439.10 2.663 732474.52 5990180.22 n70 22 28.333 w148 6 36.3 18863.00 72.57 35.60 9914.46 10981.26 8526.89 8466.79 0.761 732523.84 5990252.65 n70 22 29.030 w148 6 34.8 18957.90 72.60 34.80 9988.46 11033.45 8555.29 8495.19 0.805 732573.82 5990328.15 n70 22 29.757 w148 6 33.2 19051150 72.79 33.50 10062.41 11083.62 8583.13 8523.03 1.341 732621.77 5990403.55 n70 22 30.484 w148 6 31.8 19148.20 73.68 31.30 10140.58 11133.22 8611.03 8550.93 2.365 732669.03 5990483.16 n70 22 31.252 w148 6 30.3 19241.70 72.73 31.60 10216.94 11179.92 8638.05 8577.95 1.061 732713.45 5990560.86 n70 22 32.002 w148 6 29.0 19337.70 74.25 29.40 10296.24 11226.63 8665.33 8605.23 2.708 732757.79 5990641.51 n70 22 32.781 w148 6 27.6 19425.00 74.01 25.60 10370.71 11265.39 8689.21 8629.11 4.196 732794.33 5990717.09 n70 22 33.513 w148 6 26.41 19526.10 75.67 26.50 10458.37 11308.25 8715.65 8655.55 1.853 732834.57 5990805.98 n70 22 34.375 w148 6 25.21 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB2 Page: 12 Field: Niakuk Date: 20:55, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 19613.60 75.10 27.90 10533.68 11346.95 8737.73 8677.63 1.680 732871.02 5990882.39 n70 22 35.115 w148 6 24.1 19708.30 74.73 27.90 10614.49 11389.73 8762.38 8702.28 0.391 732911.39 5990964.43 n70 22 35.909 w148 6 22.8 19801.30 74.67 26.20 10694.38 11430.53 8786.92 8726.82 1.764 732949.80 5991045.48 n70 22 36.694 w148 6 21.6 19898.00 74.49 25.60 10778.23 11471.24 8812.63 8752.53 0.626 732988.02 5991130.50 n70 22 37.518 w148 6 20.4 19992.50 73.50 24.20 10860.62 11509.49 8838.69 8778.59 1.768 733023.81 5991213.98 n70 22 38.327 w148 6 19.3 20082.60 72.01 24.20 10939.10 11544.76 8865.40 8805.30 1.654 733056.74 5991293.47 n70 22 39.099 w148 6 18.2 20175.70 72.19 24.10 11019.94 11581.01 8894.01 8833.91 0.219 733090.58 5991375.35 n70 22 39.893 w148 6 17.2 20267.70 73.10 25.80 11099.55 11618.05 8921.46 8861.36 2.022 733125.24 5991456.02 n70 22 40.676 w148 6 16.1 20360.50 73.90 26.40 11179.46 11657.20 8947.81 8887.71 1.062 733162.01 5991537.04 n70 22 41.461 w148 6 14.9 20457.60 73.21 25.10 11263.34 11697.66 8975.30 8915.20 1.468 733199.96 5991622.07 n70 22 42.285 w148 6 13.8 20551.60 72.10 26.40 11344.15 11736.63 9003.33 8943.23 1.771 733236.53 5991704.00 n70 22 43.079 w148 6 12.6 20645.10 70.82 24.10 11424.32 11774.45 9033.06 8972.96 2.704 733271.95 5991785.25 n70 22 43.867 w148 6 11.5 20738.40 71.34 24.50 11504.75 11810.77 9063.31 9003.21 0.689 733305.88 5991866.72 n70 22 44.658 w148 6 10.4 20830.70 71.80 23.10 11584.87 11846.10 9092.49 9032.39 1.523 733338.82 5991947.85 n70 22 45.445 w148 6 9.4 20922.50 71.07 24.50 11664.49 11881.22 9121.72 9061.62 1.650 733371.56 5992028.47 n70 22 46.228 w148 6 8.4 21016.70 71.25 24.70 11745.55 11918.33 9152.14 9092.04 0.277 733406.26 5992110.59 n70 22 47.024 w148 6 7.3 21110.90 71.67 23.00 11827.24 11954.44 9182.09 9121.99 1.768 733439.93 5992193.30 n70 22 47.827 w148 6 6.2 21225.00 71.67 23.00 11926.94 11996.76 9217.98 9157.88 0.000 733479.28 5992294.21 n70 22 48.807 w148 6 5.0 Operator: ARCO Field: Niakuk Well Definition Survey Details Report Well: NK-41PB3 7 ?---// Date: 21:18, 06 Aug 98 DEFINITIVE WDF : Yes Description : Final definitive (trend extrapolation) Associated wellbore : Current Created/Updated By williamh on 12:24, 11 Feb 98 Facility Details : Actual Location Coordinates WDF type : Composite Latitude 70 deg 21 min 5.879 sec N Longitude 148 deg 15 min 27.984 sec W Eastings 714553.260 feet Northings 5981257.790 feet Geodetic Datum NAD27AFT Mapping Projection TMALSK4F Grid data at Well Reference Point : Convergence 1.696226 deg Scale Factor 0.999956 Tie In Details Tie In Type : Well Reference Coordinates MD Inc Azi North East TVD (ft) (deg) (deg) (ft) (ft) (ft) 40.70 0.000 0.000 0.00 0.00 40.70 Concatenation of survey stations Number of Survey Points : 374 End Depth : 22093.00 ft Extrapolation to TD - average build rate : -2.200 deg/100ft - average walk rate : -0.322 deg/100ft Survey Composition Details Survey Description Gyrodata drillpipe multishot -continuous MWD - Standard (input as multishot) Start Depth (ft) 100.00 17687.10 End Depth (ft) 17650.00 21933.70 Ail Depths are relative to BRT on rig POOL 7 Ail Azimuths are relative to TRUE North Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB3 Date: 21:18, 06 Aug 98 Page: 2 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 40.70 0.00 0.00 100.00 0.27 312.90 200.00 0.08 60.42 300.00 0.23 165.55 400.00 0.25 285.22 500.00 0.19 313.96 599.00 0.14 102.51 699.00 0.28 246.75 799.00 0.14 348.96 903.00 0.16 90.67 1000.00 0.22 242.90 1101.00 0.26 339.33 1200.00 0.23 7.88 1308.00 0.25 4.38 1399.00 0.28 27.01 1500.00 0.29 28.71 1599.00 0.27 348.18 1700.00 0.32 357.94 1805.00 0.77 40.76 1904.00 1.82 48.86 2006.00 3.58 43.78 2106.00 5.30 39.20 2206.00 6.41 39.83 2306.00 7.80 43.99 2406.00 8.35 45.17 2506.00 11.05 46.67 2606.00 13.47 46.16 2706.00 15.30 47.25 2756.00 16.59 48.38 2800.00 17.51 48.62 2850.00 17.93 49.17 2900.00 18.69 49.71 2950.00 19.13 51.56 3000.00 20.35 52.36 3050.00 22.14 51.84 North (ft) 0.00 0.10 0.29 0.13 -0.01 0.17 0.25 0.13 0.15 0.28 0.19 0.32 0.72 1.17 1.57 2.01 2.46 2.98 3.80 5.34 8.71 14.54 22.41 31.58 41.58 53.27 67.92 84.94 94.16 102.71 112.72 122.93 133.20 143.61 154.74 East TVD(BRT) TVD(SS) (ft) 0.00 -0.10 -0.21 -0.10 -0.26 -0.59 -0.59 -0.70 -0.95 -0.83 DLS Easting Northing Latitude Longitu (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 40.70 -19.40 0.000 721841.36 5980017.95 n70 20 51.603 w148 11 56.1 100.00 39.90 0.455 721841.25 5980018.04 n70 20 51.603 w148 11 56.] 200.00 139.90 0.304 721841.13 5980018.24 n70 20 51.605 w148 11 56.3 300.00 239.90 0.262 721841.25 5980018.08 n70 20 51.604 w148 11 56.] 400.00 339.90 0.415 721841.09 5980017.94 n70 20 51.602 w148 11 56.] 500.00 439.90 0.124 721840.76 5980018.10 n70 20 51.604 w148 11 56.] 599.00 538.90 0.321 721840.75 5980018.19 n70 20 51.605 w148 11 56.3 699.00 638.90 0.402 721840.65 5980018.06 n70 20 51.604 w148 11 56.3 799.00 738.90 0.338 721840.40 5980018.08 n70 20 51.604 w148 11 56.1 903.00 842.90 0.224 721840.52 5980018.20 n70 20 51.605 w148 11 56.~ -0.86 1000.00 939.90 0.381 721840.49 5980018.12 n70 20 51.604 w148 11 56.1 -1.11 1101.00 1040.90 0.355 721840.24 5980018.24 n70 20 51.606 w148 11 56.1 -1.16 1200.00 1139.90 0.126 721840.17 5980018.64 n70 20 51.610 w148 11 56.1 -1.11 1307.99 1247.89 0.023 721840.21 5980019.09 n70 20 51.614 w148 11 56.1 -1.00 1398.99 1338.89 0.119 721840.31 5980019.49 n70 20 51.618 w148 11 56.1 -0.76 1499.99 1439.89 0.013 721840.53 5980019.94 n70 20 51.622 w148 11 56.1 -0.69 1598.99 1538.89 0.197 721840.59 5980020.39 n70 20 51.627 w148 11 56.1 -0.75 1699.99 1639.89 0.070 721840.52 5980020.91 n70 20 51.632 w148 11 56.1 -0.30 1804.98 1744.88 0.550 721840.94 5980021.75 n70 20 51.640 w148 11 56.1 1.32 1903.96 1843.86 1.074 721842.52 5980023.33 n70 20 51.655 w148 11 56.0 4.74 2005.84 1945.74 1.740 721845.84 5980026.80 n70 20 51.688 w148 11 55.9 9.82 2105.54 2045.44 1.755 721850.74 5980032.78 n70 20 51.746 w148 11 55.8 16.32 2205.01 2144.91 1.112 721857.00 5980040.83 n70 20 51.823 w148 11 55.6 24.61 2304.24 2244.14 1.481 721865.01 5980050.24 n70 20 51.913 w148 11 55.4 34.47 2403.25 2343.15 0.574 721874.58 5980060.53 n70 20 52.011 w148 11 55.1 46.59 2501.81 2441.71 2.712 721886.35 5980072.58 n70 20 52.126 w148 11 54.7 61.96 2599.53 2539.43 2.422 721901.28 5980087.67 n70 20 52.271 w148 11 54.3 80.06 2696.39 2636.29 1.850 721918.86 5980105.23 n70 20 52.438 w148 11 53.7 90.24 2744.46 2684.36 2.654 721928.76 5980114.74 n70 20 52.529 w148 11 53.4 99.90 2786.53 2726.43 2.097 721938.17 5980123.57 n70 20 52.613 w148 11 53.2 111.37 2834.16 2774.06 0.904 721949.33 5980133.91 n70 20 52.711 w148 11 52.8 123.30 2881.62 2821.52 1.557 721960.96 5980144.47 n70 20 52.811 w148 11 52.5 135.83 2928.93 2868.83 1.487 721973.18 5980155.11 n70 20 52.913 w148 11 52.1 149.13 2975.99 2915.89 2.499 721986.16 5980165.90 n70 20 53.015 w148 11 51.7 163.42 3022.59 2962.49 3.600 722000.12 5980177.45 n70 20 53.124 w148 11 51.3 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB3 Date: 21:18, 06 Aug 98 Page: 3 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 3100.00 24.16 49.92 3150.00 25.60 48.74 3200.00 27.01 47.19 3250.00 27.96 46.01 3300.00 29.01 45.49 3350.00 29.71 45.30 3400.00 31.06 45.67 3450.00 32.54 47.27 3500.00 33.82 48.70 3550.00 35.60 49.93 3600.00 37.19 51.11 3650.00 38.38 51.42 3700.00 39.92 51.28 3750.00 41.04 50.68 3800.00 42.52 50.12 3850.00 43.76 49.62 3900.00 45.01 49.19 3950.00 46.10 48.99 4000.00 47.24 48.21 4050.00 48.99 47.22 4100.00 50.38 46.43 4150.00 52.03 46.18 4200.00 53.64 46.07 4250.00 55.44 46.06 4300.00 57.17 46.09 4350.00 58.10 46.25 4400.00 58.46 46.54 4450.00 59.14 46.70 4500.00 60.35 46.53 4550.00 61.99 46.40 4600.00 63.17 45.98 4650.00 64.45 45.44 4700.00 65.85 45.07 4750.00 66.99 44.66 4800.00 68.43 44.39 North (ft) 167.15 180.86 195.70 211.56 228.20 245.41 263.14 281.28 299.59 318.14 337.00 356.17 375.89 396.32 417.56 439.59 462.35 485.73 509.78 534.83 560.92 587.84 615.45 643.71 672.57 701.81 731.15 760.52 790.19 820.36 851.08 882.41 914.35 946.83 979.81 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 178.66 3068.56 3008.46 4.312 194.61 3113.92 3053.82 3.046 211.06 3158.74 3098.64 3.137 227.83 3203.10 3143.00 2.190 244.91 3247.04 3186.94 2.158 262.36 3290.62 3230.52 1.412 280.39 3333.75 3273.65 2.726 299.50 3376.25 3316.15 3.406 319.83 3418.09 3357.99 3.000 341.42 3459.19 3399.09 3.826 364.33 3499.44 3439.34 3.475 388.22 3538.96 3478.86 2.410 412.87 3577.73 3517.63 3.085 438.09 3615.76 3555.66 2.372 463.76 3653.05 3592.95 3.053 489.90 3689.53 3629.43 2.573 516.45 3725.26 3665.16 2.571 543.43 3760.27 3700.17 2.199 570.71 3794.58 3734.48 2.547 598.24 3827.96 3767.86 3.798 626.04 3860.31 3800.21 3.030 654.22 3891.64 3831.54 3.323 682.94 3921.84 3861.74 3.225 712.26 3950.85 3890.75 3.600 742.22 3978.59 3918.49 3.460 772.69 4005.35 3945.25 1.880 803.49 4031.64 3971.54 0.873 834.57 4057.54 3997.44 1.387 865.96 4082.73 4022.63 2.438 897.71 4106.84 4046.74 3.288 929.74 4129.87 4069.77 2.475 961.86 4151.93 4091.83 2.737 994.08 4172.95 4112.85 2.879 1026.40 4192.95 4132.85 2.401 1058.84 4211.91 4151.81 2.923 Easting (feet) 722014.98 722030.52 722046.52 722062.81 722079.39 722096.32 722113.82 722132.38 722152.16 722173.20 722195.53 722218.85 722242.90 722267.50 722292.53 722318.00 722343.87 722370.14 722396.70 722423.48 722450.49 722477.85 722505.74 722534.22 722563.31 722592.90 722622.81 722653.01 722683.51 722714.35 722745.45 722776.63 722807.89 722839.24 722870.69 Northing Latitude Longitu (feet) Deg Min Sec Deg Min S 5980190.31 n70 20 53.246 w148 11 50.9 5980204.49 n70 20 53.381 w148 11 50.4 5980219.81 n70 20 53.527 w148 11 49.9 5980236.15 n70 20 53.683 w148 11 49.4 5980253.29 n70 20 53.847 w148 11 48.9 5980271.01 n70 20 54.016 w148 11 48.4 5980289.27 n70 20 54.190 w148 11 47.9 5980307.96 n70 20 54.369 w148 11 47.3 5980326.87 n70 20 54.549 w148 11 46.7 5980346.05 n70 20 54.731 w148 11 46.1 5980365.58 n70 20 54.917 w148 11 45.4 5980385.44 n70 20 55.105 w148 11 44.7 5980405.88 nT0 20 55.299 w148 11 44.0 5980427.05 n70 20 55.500 w148 11 43.3 5980449.04 n70 20 55.709 w148 11 42.5 5980471.84 n70 20 55.926 w148 11 41.8 5980495.37 n70 20 56.150 w148 11 41.0 5980519.53 nT0 20 56.379 w148 11 40.2 5980544.38 n70 20 56.616 w148 11 39.4 5980570.23 n70 20 56.862 w148 11 38.6 5980597.13 n70 20 57.119 w148 11 37.8 5980624.87 n70 20 57.384 w148 11 37.0 5980653.32 n70 20 57.655 w148 11 36.1 5980682.43 n70 20 57.933 w148 11 35.3 5980712.16 n70 20 58.217 w148 11 34.4 5980742.30 n70 20 58.504 w148 11 33.5 5980772.53 n70 20 58.793 w148 11 32.6 5980802.81 n70 20 59.082 w148 11 31.7 5980833.39 n70 20 59.373 w148 11 30.8 5980864.48 n70 20 59.670 w148 11 29.9 5980896.14 n70 20 59.972 w148 11 28.9 5980928.41 n70 21 0.280 w148 11 28.0 5980961.28 n70 21 0.594 w148 11 27.0 5980994.71 n70 21 0.914 w148 11 26.1 5981028.63 n70 21 1.238 w148 11 25.1 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 4 Field: Niakuk Date: 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 4850.00 69.45 44.08 1013.24 1091.39 4229.88 4169.78 2.120 722902.23 5981063.01 n70 21 1.567 w148 11 24.2 4900.00 70.54 43.41 1047.19 1123.88 4246.98 4186.88 2.518 722933.69 5981097.90 n70 21 1.901 w148 11 23.2 4950.00 71.13 43.20 1081.55 1156.27 4263.40 4203.30 1.245 722965.05 5981133.21 n70 21 2.239 w148 11 22.3 5000.00 70.52 43.29 1115.96 1188.63 4279.82 4219.72 1.232 722996.38 5981168.55 n70 21 2.577 w148 11 21.3 5100.00 71.21 43.60 1184.55 1253.59 4312.60 4252.50 0.750 723059.28 5981239.03 n70 21 3.251 w148 11 19.4 5150.00 71.52 43.77 1218.81 1286.32 4328.58 4268.48 0.699 723090.97 5981274.24 n70 21 3.588 w148 11 18.5 5200.00 70.95 43.79 1252.99 1319.07 4344.66 4284.56 1.141 723122.70 5981309.38 n70 21 3.924 w148 11 17.5 5250.00 70.61 43.71 1287.09 1351.72 4361.12 4301.02 0.697 723154.33 5981344.43 n70 21 4.260 w148 11 16.6 5300.00 71.03 43.73 1321.22 1384.36 4377.55 4317.45 0.841 723185.94 5981379.51 n70 21 4.595 w148 11 15.6' 5350.00 71.31 43.72 1355.42 1417.07 4393.69 4333.59 0.560 723217.62 5981414.66 n70 21 4.932 w148 11 14.7 5400.00 71.76 44.04 1389.61 1449.94 4409.52 4349.42 1.086 723249.47 5981449.81 n70 21 5.268 w148 11 13.7 5450.00 71.87 44.28 1423.69 1483.04 4425.13 4365.03 0.506 723281.53 5981484.85 n70 21 5.603 w148 11 12.7 5500.00 71.30 44.17 1457.68 1516.13 4440.92 4380.82 1.159 723313.60 5981519.80 n70 21 5.937 w148 11 11.8 5550.00 71.13 44.19 1491.63 1549.11 4457.02 4396.92 0.342 723345.57 5981554.71 n70 21 6.271 w148 11 10.8 5600.00 70.91 44.05 1525.57 1582.03 4473.28 4413.18 0.514 723377.46 5981589.61 n70 21 6.605 w148 11 9.8 5650.00 70.62 43.72 1559.60 1614.76 4489.76 4429.66 0.851 723409.17 5981624.59 n70 21 6.939 w148 11 8.9 5700.00 70.30 43.46 1593.73 1647.25 4506.48 4446.38 0.806 723440.63 5981659.66 nT0 21 7.275 w148 11 7.9 5750.00 70.32 43.09 1628.00 1679.52 4523.33 4463.23 0.698 723471.87 5981694.88 n70 21 7.612 w148 11 7.0 5800.00 70.33 42.88 1662.44 1711.62 4540.16 4480.06 0.396 723502.94 5981730.25 n70 21 7.950 w148 11 6.1 5850.00 70.46 42.44 1697.08 1743.53 4556.94 4496.84 0.869 723533.81 5981765.82 n70 21 8.291 w148 11 5.1 5900.00 71.72 41.57 1732.23 1775.19 4573.14 4513.04 3.010 723564.41 5981801.89 n70 21 8.637 w148 11 4.2 5950.00 72.59 40.85 1768.03 1806.54 4588.46 4528.36 2.215 723594.69 5981838.60 n70 21 8.989 w148 11 3.3 6000.00 72.89 40.94 1804.13 1837.80 4603.30 4543.20 0.624 723624.87 5981875.60 n70 21 9.344 w148 11 2.4 6050.00 73.34 41.07 1840.23 1869.19 4617.82 4557.72 0.934 723655.17 5981912.62 n70 21 9.699 w148 11 1.5 6100.00 73.07 41.01 1876.34 1900.62 4632.27 4572.17 0.552 723685.52 5981949.64 n70 21 10.054 w148 11 0.5 6150.00 73.51 41.16 1912.43 1932.09 4646.65 4586.55 0.926 723715.91 5981986.65 n70 21 10.409 w148 10 59.6 6200.00 73.69 41.30 1948.51 1963.71 4660.76 4600.66 0.449 723746.44 5982023.64 n70 21 10.763 w148 10 58.7. 6250.00 72.91 41.32 1984.48 1995.32 4675.13 4615.03 1.560 723776.97 5982060.53 n70 21 11.117 w148 10 57.81 6300.00 72.80 41.33 2020.36 2026.87 4689.87 4629.77 0.221 723807.44 5982097.33 n70 21 11.470 w148 10 56.81 6350.00 72.50 41.38 2056.18 2058.40 4704.78 4644.68 0.608 723837.90 5982134.07 n70 21 11.822 w148 10 55.9' 6400.00 72.12 41.45 2091.91 2089.91 4719.97 4659.87 0.772 723868.34 5982170.71 n70 21 12.173 w148 10 55.0~ 6450.00 72.02 41.36 2127.59 2121.38 4735.37 4675.27 0.263 723898.73 5982207.30 n70 21 12.524 w148 10 54.1~ 6500.00 71.70 41.24 2163.28 2152.74 4750.93 4690.83 0.679 723929.02 5982243.91 n70 21 12.875 w148 10 53.2[ 6550.00 72.07 41.32 2199.00 2184.09 4766.48 4706.38 0.755 723959.30 5982280.53 n70 21 13.226 w148 10 52.2~ 6600.00 72.28 41.50 2234.70 2215.57 4781.79 4721.69 0.542 723989.71 5982317.15 n70 21 13.577 w148 10 51.35 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB3 Date: 21:18, 06 Aug 98 Page: 5 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi (ft) (deg) (deg) 6650.00 72.80 41.69 6700.00 72.77 41.90 6750.00 72.34 42.07 6800.00 71.97 42.14 6850.00 70.80 42.34 6900.00 69.97 42.45 6950.00 69.50 42.39 7000.00 69.13 42.43 7050.00 67.87 42.38 7100.00 68.25 42.29 7150.00 69.39 42.36 7200.00 70.20 42.30 7250.00 69.86 42.15 7300.00 70.82 42.11 7350.00 71.14 42.06 7400.00 71.97 42.02 7450.00 72.67 41.99 7500.00 71.93 41.77 7550.00 72.36 42.12 7600.00 72.21 43.06 7650.00 72.09 43.66 7700.00 72.16 44.34 7750.00 71.64 44.71 7800.00 72.11 45.05 .7850.00 71.74 45.11 7900.00 71.54 45.29 7950.00 71.66 45.60 8000.00 71.74 45.79 8050.00 72.30 46.36 8100.00 72.00 46.86 8150.00 72.45 47.00 8200.00 72.58 46.95 8250.00 72.22 46.63 8300.00 72.35 46.78 8350.00 72.43 47.38 North (ft) 2270.37 2305.97 2341.43 2376.74 2411.82 2446.60 2481.23 2515.77 2550.12 2584.40 2618.87 2653.56 2688.36 2723.28 2758.36 2793.58 2828.98 2864.45 2899.85 2934.91 2969.51 3003.74 3037.63 3071.30 3104.86 3138.30 3171.59 3204.74 3237.73 3270.43 3302.94 3335.48 3368.11 3400.78 3433.23 East TVD(BRT) TVD(SS) DLS (ft) (ft) (ft) (deg/100ft) 2247.24 4796.79 4736.69 1.101 2279.07 4811.59 4751.49 0.406 2310.98 4826.57 4766.47 0.919 2342.89 4841.90 4781.80 0.752 2374.74 4857.86 4797.76 2.371 2406.50 4874.64 4814.54 1.673 2438.14 4891.96 4831.86 0.947 2469.68 4909.62 4849.52 0.744 2501.05 4927.95 4867.85 2.522 2532.29 4946.63 4886.53 0.778 2563.68 4964.69 4904.59 2.284 2595.28 4981.96 4921.86 1.624 2626.86 4999.04 4938.94 0.736 2658.45 5015.86 4955.76 1.921 2690.13 5032.15 4972.05 0.647 2721.89 5047.97 4987.87 1.662 2753.77 5063.16 5003.06 1.401 2785.57 5078.36 5018.26 1.538 2817.38 5093.69 5033.59 1.088 2849.61 5108.91 5048.81 1.816 2882.29 5124.23 5064.13 1.167 2915.34 5139.58 5079.48 1.302 2948.67 5155.11 5095.01 1.256 2982.20 5170.67 5110.57 1.141 3015.86 5186.18 5126.08 0.749 3049.53 5201.93 5141.83 0.526 3083.34 5217.71 5157.61 0.635 3117.31 5233.41 5173.31 0.395 3151.56 5248.85 5188.75 1.559 3186.15 5264.17 5204.07 1.125 3220.93 5279.44 5219.34 0.939 3255.79 5294.46 5234.36 0.277 3290.53 5309.58 5249.48 0.944 3325.20 5324.79 5264.69 0.386 3360.10 5339.92 5279.82 1.155 Easting (feet) 724020.30 724051.06 724081.91 724112.76 724143.56 724174.27 724204.87 724235.38 724265.72 724295.92 724326.28 724356.83 724387.37 724417.91 724448.54 724479.24 724510.06 724540.79 724571.54 724602.72 724634.35 724666.38 724698.69 724731.20 724763.85 724796.52 724829.32 724862.30 724895.56 724929.16 724962.96 724996.84 725030.60 725064.28 725098.20 Northing Latitude Longitu, (feet) Deg Min Sec Deg Min S, 5982353.73 n70 21 13.928 w148 10 50.4, 5982390.27 n70 21 14.278 w148 10 49.51 5982426.65 n70 21 14.627 w148 10 48.5: 5982462.89 n70 21 14.974 w148 10 47.6! 5982498.89 n70 21 15.319 w148 10 46.7~ 5982534.60 n70 21 15.661 w148 10 45.7[ 5982570.15 n70 21 16.001 w148 10 44.8( 5982605.60 n70 21 16.341 w148 10 43.9~ 5982640.86 n70 21 16.678 w148 10 43.0~ 5982676.05 n70 21 17.016 w148 10 42.1~ 5982711.44 n70 21 17.354 w148 10 41.1~ 5982747.04 n70 21 17.695 w148 10 40.25 5982782.76 n70 21 18.038 w148 10 39.3~ 5982818.60 n70 21 18.381 w148 10 38.4~ 5982854.60 n70 21 18.726 w148 10 37.4~ 5982890.75 n70 21 19.072 w148 10 36.5( 5982927.07 n70 21 19.420 w148 10 35.62 5982963.46 n70 21 19.769 w148 10 34.7( 5982999.79 n70 21 20.117 w148 10 33.7r 5983035.79 n70 21 20.462 w148 10 32.8! 5983071.34 n70 21 20.802 w148 10 31.8' 5983106.53 n70 21 21.138 w148 10 30.9~ 5983141.39 n70 21 21.471 w148 10 29.9~ 5983176.03 n70 21 21.802 w148 10 28.9~ 5983210.58 n70 21 22.132 w148 10 27.9~ 5983245.00 n70 21 22.461 w148 10 26.9~ 5983279.27 n70 21 22.788 w148 10 25.9~ 5983313.41 n70 21 23.114 w148 10 25.0( 5983347.40 n70 21 23.439 w148 10 24.0( 5983381.11 n70 21 23.760 w148 10 22.9S 5983414.63 n70 21 24.080 w148 10 21.9~ 5983448.19 n70 21 24.400 w148 10 20.9~ 5983481.83 nT0 21 24.720 w148 10 19.9~ 5983515.50 n70 21 25.041 w148 10 18.92 5983548.98 nT0 21 25.360 w148 10 17.90 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 6 Field: Niakuk Date: 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 8400.00 72.43 47.45 3465.49 3395.19 5355.01 5294.91 0.133 725132.33 5983582.25 n70 21 25.677 w148 10 16.8 8450.00 71.98 47.26 3497.74 3430.21 5370.29 5310.19 0.970 725166.37 5983615.53 n70 21 25.995 w148 10 15.8 8500.00 71.77 47.34 3529.96 3465.13 5385.85 5325.75 0.447 725200.33 5983648.77 n70 21 26.311 w148 10 14.8 8550.00 72.32 47.47 3562.15 3500.15 5401.26 5341.16 1.127 725234.37 5983681.98 n70 21 26.628 w148 10 13.8 8600.00 72.23 47.67 3594.29 3535.30 5416.48 5356.38 0.421 725268.56 5983715.14 n70 21 26.944 w148 10 12.7 8650.00 72.86 48.19 3626.25 3570.71 5431.48 5371.38 1.604 725303.00 5983748.13 n70 21 27.258 w148 10 11.7 8700.00 72.58 48.37 3658.02 3606.34 5446.33 5386.23 0.657 725337.68 5983780.94 n70 21 27.570 w148 10 10.7 8750.00 72.41 48.45 3689.67 3642.01 5461.37 5401.27 0.373 725372.39 5983813.64 n70 21 27.881 w148 10 9.6 8800.00 72.54 48.48 3721.29 3677.70 5476.43 5416.33 0.266 725407.13 5983846.29 n70 21 28.192 w148 10 8.6 8850.00 72.40 48.32 3752.94 3713.35 5491.49 5431.39 0.414 725441.82 5983878.99 n70 21 28.503 w148 10 7.5 8900.00 72.45 48.15 3784.69 3748.91 5506.59 5446.49 0.339 725476.42 5983911.77 n70 21 28.815 w148 10 6.5 8950.00 72.08 48.13 3816.47 3784.37 5521.82 5461.72 0.741 725510.93 5983944.59 n70 21 29.128 w148 10 5.4 9000.00 72.47 48.26 3848.22 3819.88 5537.04 5476.94 0.818 725545.48 5983977.37 n70 21 29.440 w148 10 4.4! 9050.00 72.63 48.41 3879.93 3855.51 5552.03 5491.93 0.429 725580.15 5984010.12 n70 21 29.751 w148 10 3.41 9100.00 72.24 48.35 3911.59 3891.14 5567.12 5507.02 0.788 725614.84 5984042.82 n70 21 30.062 w148 10 2.3' 9150.00 72.22 48.21 3943.28 3926.68 5582.38 5522.28 0.270 725649.42 5984075.54 n70 21 30.374 w148 10 1.31 9200.00 72.48 48.41 3974.96 3962.26 5597.54 5537.44 0.645 725684.05 5984108.27 n70 21 30.685 w148 10 0.2! 9250.00 72.50 48.69 4006.53 3998.00 5612.59 5552.49 0.536 725718.83 5984140.88 n70 21 30.996 w148 9 59.2, 9300.00 72.17 48.54 4038.03 4033.75 5627.76 5567.66 0.719 725753.63 5984173.42 n70 21 31.305 w148 9 58.21 9350.00 71.91 48.30 4069.59 4069.33 5643.18 5583.08 0.692 725788.26 5984206.02 n70 21 31.615 w148 9 57.1~ 9400.00 72.03 48.16 4101.26 4104.79 5658.65 5598.55 0.358 725822.76 5984238.73 n70 21 31.927 w148 9 56.1~ 9450.00 72.24 48.13 4133.02 4140.23 5673.99 5613.89 0.424 725857.25 5984271.52 n70 21 32.239 w148 9 55.0I 9500.00 72.33 48.19 4164.79 4175.72 5689.21 5629.11 0.213 725891.78 5984304.32 n70 21 32.551 w148 9 54.0~ 9550.00 72.77 48.40 4196.52 4211.33 5704.20 5644.10 0.967 725926.43 5984337.09 n70 21 32.863 w148 9 53.0( 9600.00. 72.38 48.25 4228.24 4246.96 5719.17 5659.07 0.831 725961.11 5984369.85 n70 21 33.175 w148 9 51.9~ 9650.00 72.97 48.08 4260.08 4282.53 5734.06 5673.96 1.224 725995.71 5984402.73 n70 21 33.488 w148 9 50.9~ 9700.00 72.95 47.85 4292.09 4318.03 5748.71 5688.61 0.442 726030.25 5984435.77 n70 21 33.802 w148 9 49.81 9750.00 72.95 47.70 4324.21 4353.43 5763.37 5703.27 0.287 726064.68 5984468.93 n70 21 34.118 w148 9 48.8[ 9800.00 73.06 47.81 4356.36 4388.83 5777.99 5717.89 0.304 726099.11 5984502.11 n70 21 34.434 w148 9 47.8[ 9850.00 72.54 48.42 4388.25 4424.39 5792.77 5732.67 1.562 726133.71 5984535.03 n70 21 34.747 wl~8 9 46.7' 9900.00 72.77 48.66 4419.85 4460.15 5807.68 5747.58 0.649 726168.53 5984567.68 n70 21 35.058 w148 9 45.7~ 9950.00 72.40 48.76 4451.33 4496.00 5822.64 5762.54 0.764 726203.42 5984600.20 n70 21 35.367 w148 9 44.61 10000.00 72.31 48.74 4482.75 4531.82 5837.80 5777.70 0.184 726238.30 5984632.67 n70 21 35.676 w148 9 43.61 10050.00 72.16 48.72 4514.15 4567.61 5853.06 5792.96 0.302 726273.14 5984665.12 n70 21 35.985 w148 9 42.51 10100.00 71.94 49.21 4545.38 4603.49 5868.47 5808.37 1.031 726308.08 5984697.39 n70 21 36.292 wl~8 9 41.51 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 7 Field: Niakuk Date: 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 10150.00 72.21 49.92 4576.24 4639.70 5883.85 5823.75 1.455 726343.36 5984729.30 n70 21 36.595 w148 9 40.4 10200.00 72.27 50.04 4606.86 4676.17 5899.11 5839.01 0.258 726378.90 5984760.99 n70 21 36.896 w148 9 39.4 10250.00 72.32 50.06 4637.44 4712.68 5914.31 5854.21 0.107 726414.49 5984792.64 n70 21 37.196 w148 9 38.3 10300.00 72.72 50.20 4668.01 4749.29 5929.33 5869.23 0.843 726450.17 5984824.28 n70 21 37.497 w148 9 37.2 10350.00 72.36 50.10 4698.58 4785.90 5944.33 5884.23 0.745 726485.87 5984855.91 n70 21 37.797 w148 9 36.1 10400.00 72.92 50.14 4729.18 4822.52 5959.25 5899.15 1.123 726521.56 5984887.58 n70 21 38.098 w148 9 35.1 10450.00 72.41 50.15 4759.76 4859.16 5974.15 5914.05 1.020 726557.28 5984919.24 n70 21 38.399 w148 9 34.0 10500.00 72.46 50.26 4790.27 4895.79 5989.24 5929.14 0.232 726592.99 5984950.82 n70 21 38.698 w148 9 32.9 10550.00 72.46 50.47 4820.68 4932.51 6004.31 5944.21 0.400 726628.78 5984982.30 n70 21 38.997 w148 9 31.9 10600.00 72.02 50.43 4851.00 4969.22 6019.56 5959.46 0.883 726664.59 5985013.69 n70 21 39.295 w148 9 30.8 10650.00 72.43 50.39 4881.35 5005.91 6034.82 5974.72 0.824 726700.36 5985045.11 n70 21 39.593 w148 9 29.7 10700.00 72.76 50.39 4911.77 5042.67 6049.78 5989.68 0.660 726736.20 5985076.60 n70 21 39.892 w148 9 28.6 10750.00 72.91 50.49 4942.19 5079.50 6064.53 6004.43 0.356 726772.11 5985108.10 n70 21 40.191 w148 9 27.6 10800.00 72.98 50.60 4972.57 5116.41 6079.20 6019.10 0.253 726808.10 5985139.55 n70 21 40.490 w148 9 26.5 10850.00 72.60 50.95 5002.77 5153.41 6093.99 6033.89 1.012 726844.19 5985170.84 n70 21 40.787 w148 9 25.4 10900.00 72.60 51.18 5032.76 5190.52 6108.95 6048.85 0.439 726880.40 5985201.91 n70 21 41.081 w148 9 24.3 10950.00 73.37 51.37 5062.67 5227.82 6123.58 6063.48 1.582 726916.79 5985232.90 n70 21 41.375 w148 9 23.2 11000.00 73.80 51.29 5092.63 5265.27 6137.71 6077.61 0.874 726953.34 5985263.97 n70 21 41.670 w148 9 22.1 11050.00 73.30 50.47 5122.89 5302.47 6151.86 6091.76 1.864 726989.63 5985295.31 n70 21 41.967 w148 9 21.0 11100.00 72.90 50.35 5153.38 5339.34 6166.40 6106.30 0.832 727025.57 5985326.87 n70 21 42.266 w148 9 20.0 11150.00 73.77 50.76 5183.81 5376.33 6180.74 6120.64 1.909 727061.64 5985358.39 n70 21 42.565 w148 9 18.9 11200.00 74.29 51.34 5214.03 5413.71 6194.50 6134.40 1.525 727098.12 5985389.70 n70 21 42.862 w148 9 17.8 11250.00 74.40 51.61 5244.01 5451.38 6207.99 6147.89 0.565 727134.88 5985420.78 n70 21 43.157 w148 9 16.7 11300.00 73.80 51.62 5273.87 5489.07 6221.69 6161.59 1.200 727171.67 5985451.74 n70 21 43.450 w148 9 15.6 11350.00 73.64 51~88 5303.59 5526.76 6235.70 6175.60 0.593 727208.46 5985482.56 n70 21 43.742 w148 9 14.5~ 11400.00 74.53 51.97 5333.24 5564.61 6249.41 6189.31 1.788 727245.42 5985513.32 n70 21 44.034 w148 9 13.4. 11450.00 74.77 52.11 5362.90 5602.63 6262.65 6202.55 0.551 727282.53 5985544.09 n70 21 44.325 w148 9 12.3, 11500.00 75.29 52.13 5392.56 5640.75 6275.56 6215.46 1.041 727319.76 5985574.86 n70 21 44.617 w148 9 11.1~ 11550.00 75.14 52.41 5422.14 5678.99 6288.32 6228.22 0.619 727357.11 5985605.56 n70 21 44.907 w148 9 10.0' 11600.00 74.57 52.68 5451.49 5717.30 6301.39 6241.29 1.254 727394.53 5985636.03 n70 21 45.196 w148 9 8.9, 11650.00 74.50 52.83 5480.66 5755.66 6314.72 6254.62 0.321 727432.01 5985666.32 n70 21 45.482 w148 9 7.8[ 11700.00 74.28 52.81 5509.76 5794.03 6328.17 6268.07 0.442 727469.50 5985696.54 n70 21 45.768 w148 9 6.71 11750.00 74.58 52.61 5538.94 5832.35 6341.59 6281.49 0.713 727506.93 5985726.84 n70 21 46.055 w148 9 5.51 11800.00 73.94 52.10 5568.33 5870.46 6355.16 6295.06 1.613 727544.15 5985757.35 n70 21 46.344 w148 9 4.41 11850.00 74.24 51.99 5597.91 5908.37 6368.86 6308.76 0.636 727581.17 5985788.03 n70 21 46.634 w148 9 3.3! Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 8 Field: Niakuk Date: 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East T VD(BRT) TVD(SS) DLS Easting Northing Latitude Longito (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 11900.00 74.07 52.32 5627.42 5946.36 6382.52 6322.42 0.720 727618.26 5985818.65 n70 21 46.924 w148 9 2.2 11950.00 73.90 52.37 5656.78 5984.40 6396.31 6336.21 0.353 727655.43 5985849.12 n70 21 47.212 w148 9 1.1 12000.00 73.98 52.44 5686.09 6022.47 6410.14 6350.04 0.209 727692.61 5985879.55 n70 21 47.500 w148 9 0.0 12050.00 73.79 52.79 5715.26 6060.64 6424.02 6363.92 0.772 727729.90 5985909.83 n70 21 47.787 w148 8 58.9 12100.00 73.79 52.47 5744.40 6098.80 6437.98 6377.88 0.615 727767.17 5985940.09 n70 21 48.073 w148 8 57.7 12150.00 73.71 51.81 5773.86 6136.70 6451.97 6391.87 1.277 727804.18 5985970.65 n70 21 48.363 w148 8 56.6 12200.00 73.57 51.27 5803.70 6174.26 6466.05 6405.95 1.073 727840.85 5986001.59 n70 21 48.656 w148 8 55.5 12250.00 74.13 51.07 5833.81 6211.68 6479.96 6419.86 1.184 727877.35 5986032.80 n70 21 48.952 w148 8 54.4 12300.00 73.86 50.25 5864.28 6248.85 6493.75 6433.65 1.666 727913.60 5986064.35 n70 21 49.251 w148 8 53.3 12350.00 73.90 50.18 5895.01 6285.76 6507.63 6447.53 0.156 727949.58 5986096.16 n70 21 49.553 w148 8 52.3 12400.00 73.69 50.24 5925.74 6322.65 6521.58 6461.48 0.436 727985.55 5986127.97 n70 21 49.855 w148 8 51.2 12450.00 73.24 50.24 5956.40 6359.50 6535.81 6475.71 0.900 728021.47 5986159.70 n70 21 50.156 w148 8 50.1 12500.00 73.49 50.28 5987.03 6396.34 6550.13 6490.03 0.506 728057.39 5986191.40 n70 21 50.457 w148 8 49.0 12550.00 72.80 50.38 6017.57 6433.17 6564.63 6504.53 1.393 728093.30 5986223.03 n70 21 50.757 w148 8 48.0 12600.00 72.51 50.71 6047.90 6470.02 6579.53 6519.43 0.856 728129.23 5986254.43 n70 21 51.055 w148 8 46.9 12650.00 72.62 51.10 6077.98 6507.04 6594.51 6534.41 0.776 728165.35 5986285.59 n70 21 51.351 w148 8 45.8 12700.00 72.23 51.21 6107.88 6544.17 6609.61 6549.51 0.808 728201.57 5986316.58 n70 21 51.644 w148 8 44.7 12750.00 72.22 51.19 6137.71 6581.28 6624.88 6564.78 0.043 728237.77 5986347.49 n70 21 51.937 w148 8 43.6 12800.00 72.15 51.27 6167.52 6618.39 6640.17 6580.07 0.207 728273.99 5986378.39 n70 21 52.230 w148 8 42.5 12850.00 71.61 51.15 6197.29 6655.43 6655.72 6595.62 1.104 728310.13 5986409.24 n70 21 52.523 w148 8 41.4 12900.00 71.87 51.07 6227.10 6692.39 6671.39 6611.29 0.542 728346.18 5986440.13 n70 21 52.816 w148 8 40.4 12950.00 71.40 50.00 6257.26 6729.02 6687.14 6627.04 2.238 728381.91 5986471.36 n70 21 53.112 w148 8 39.3 13000.00 71.63 49.38 6287.94 6765.18 6703.00 6642.90 1.263 728417.14 5986503.09 n70 21 53.413 w148 8 38.2 13050.00 71.71 49.59 6318.78 6801.26 6718.72 6658.62 0.430 728452.30 5986534.98 n70 21 53.716 w148 8 37.2 13100.00 71.50 49.13 6349.68 6837.27 6734.50 6674.40 0.969 728487.37 5986566.93 n70 21 54.020 w148 8 36.1 13150.00 71.70 49.09 6380.73 6873.13 6750.28 6690.18 0.407 728522.30 5986599.03 n70 21 54.325 w148 8 35.1 13200.00 71.34 49.00 6411.82 6908.95 6766.13 6706.03 0.740 728557.17 5986631.16 n70 21 54.630 w148 8 34.0 13250.00 71.29 49.04 6442.88 6944.70 6782.15 6722.05 0.125 728591.99 5986663.27 n70 21 54.935 w148 8 33.0 13300.00 71.00 48.85 6473.96 6980.38 6798.31 6738.21 0.682 728626.74 5986695.39 n70 21 55.241 w148 8 31.9 13350.00 71.69 48.63 6505.20 7016.00 6814.30 6754.20 1.442 728661.41 5986727.67 n70 21 55.548 w148 8 30.9. 13400.00 71.91 48.50 6536.63 7051.61 6829.92 6769.82 0.505 728696.07 5986760.14 n70 21 55.856 w148 8 29.9, 13450.00 71.46 48.65 6568.04 7087.20 6845.63 6785.53 0.944 728730.71 5986792.58 n70 21 56.165 w148 8 28.8~ 13500.00 71.71 48.74 6599.35 7122.83 6861.42 6801.32 0.528 728765.41 5986824.94 n70 21 56.473 w148 8 27.8~ 13550.00 72.13 48.85 6630.66 7158.60 6876.94 6816.84 0.866 728800.22 5986857.29 n70 21 56.780 w148 8 26.7r 13600.00 72.23 48.78 6662.01 7194.42 6892.24 6832.14 0.240 728835.10 5986889.68 n70 21 57.088 w148 8 25.7~ Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 9 Field: Niakuk Date: 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 13650.00 72.14 48.86 6693.35 7230.25 6907.54 6847.44 0.236 728869.98 5986922.07 n70 21 57.396 w148 8 24.6 13700.00 72.28 48.86 6724.67 7266.10 6922.82 6862.72 0.280 728904.89 5986954.44 n70 21 57.704 w148 8 23.6 13750.00 72.99 49.05 6756.01 7302.09 6937.74 6877.64 1.466 728939.94 5986986.82 n70 21 58.012 w148 8 22.5 13800.00 72.60 49.01 6787.32 7338.16 6952.53 6892.43 0.784 728975.06 5987019.19 n70 21 58.319 w148 8 21.5 13850.00 72.45 48.98 6818.61 7374.15 6967.54 6907.44 0.305 729010.11 5987051.53 n70 21 58.627 w148 8 20.4 13900.00 72.06 48.95 6849.88 7410.07 6982.78 6922.68 0.782 729045.08 5987083.85 n70 21 58.934 w148 8 19.4 13950.00 71.73 48.96 6881.09 7445.91 6998.32 6938.22 0.660 729079.99 5987116.10 n70 21 59.240 w148 8 18.3 14000.00 71.93 49.35 6912.16 7481.85 7013.91 6953.81 0.842 729114.99 5987148.22 n70 21 59.546 w148 8 17.3 14050.00 72.27 49.76 6943.02 7518.06 7029.28 6969.18 1.035 729150.27 5987180.14 n70 21 59.849 w148 8 16.2 14100.00 72.28 49.72 6973.80 7554.40 7044.50 6984.40 0.079 729185.68 5987211.98 n70 22 0.151 w148 8 15.1 14150.00 71.97 49.98 7004.48 7590.78 7059.85 6999.75 0.793 729221.13 5987243.72 n70 22 0.453 w148 8 14.1 14200.00 72.31 50.31 7034.98 7627.31 7075.18 7015.08 0.926 729256.74 5987275.29 n70 22 0.752 w148 8 13.0 14250.00 72.72 50.55 7065.36 7664.07 7090.21 7030.11 0.939 729292.59 5987306.74 n70 22 1.051 w148 8 11.9 14300.00 72.21 50.54 7095.66 7700.88 7105.27 7045.17 1.020 729328.48 5987338.11 n70 22 1.348 w148 8 10.8 14350.00 72.15 50.33 7125.98 7737.58 7120.57 7060.47 0.417 729364.26 5987369.50 n70 22 1.646 w148 8 9.8 14400.00 71.86 50.42 7156.31 7774.21 7136.02 7075.92 0.605 729399.98 5987400.90 n70 22 1.944 w148 8 8.7 14450.00 72.03 50.43 7186.59 7810.85 7151.52 7091.42 0.341 729435.70 5987432.26 n70 22 2.241 w148 8 7.6 14500.00 72.77 50.62 7216.89 7847.64 7166.63 7106.53 1.524 729471.58 5987463.63 n70 22 2.539 w148 8 6.6 14550.00 72.25 50.74 7247.11 7884.53 7181.66 7121.56 1.065 729507.56 5987494.93 n70 22 2.836 w148 8 5.5 14600.00 72.32 50.94 7277.18 7921.46 7196.88 7136.78 0.406 729543.58 5987526.08 n70 22 3.131 w148 8 4.4 14650.00 72.08 50.98 7307.17 7958.44 7212.16 7152.06 0.486 729579.65 5987557.15 n70 22 3.426 w148 8 3.3 14700.00 71.81 50.96 7337.11 7995.36 7227.66 7167.56 0.541 729615.68 5987588.16 n70 22 3.720 w148 8 2.2 14750.00 72.07 51.09 7367.01 8032.32 7243.16 7183.06 0.576 729651.73 5987619.14 n70 22 4.013 w148 8 1.1 14800.00 71.57 51.38 7396.75 8069.36 7258.76 7198.66 1.142 729687.87 5987649.97 n70 22 4.305 w148 8 0.1 14850.00 72.20 51.37 7426.41 8106.49 7274.30 7214.20 1.260 729724.10 5987680.71 n70 22 4.597 w148 7 59.0~ 14900.00 72.56 51.75 7456.04 8143.81 7289.44 7229.34 1.021 729760.53 5987711.43 n70 22 4.888 w148 7 57.9 14950.00 72.10 51.87 7485.49 8181.26 7304.62 7244.52 0.948 729797.09 5987741.98 n70 22 5.177 w148 7 56.8 15000.00 72.54 51.91 7514.90 8218.74 7319.80 7259.70 0.883 729833.68 5987772.48 n70 22 5.466 w148 7 55.7 15050.00 72.50 51.81 7544.35 8256.25 7334.82 7274.72 0.207 729870.30 5987803.03 n70 22 5.755 w148 7 54.6 15100.00 72.18 51.89 7573.78 8293.71 7349.99 7289.89 0.658 729906.88 5987833.55 n70 22 6.044 w148 7 53.5 15150.00 72.12 52.42 7602.98 8331.30 7365.31 7305.21 1.016 729943.58 5987863.85 n70 22 6.331 w148 7 52.4 15200.00 72.39 52.51 7631.99 8369.06 7380.55 7320.45 0.567 729980.46 5987893.97 n70 22 6.616 w148 7 51.3 15250.00 72.97 52.78 7660.95 8407.00 7395.44 7335.34 1.269 730017.53 5987924.04 n70 22 6.900 w148 7 50.2 15300.00 72.93 52.93 7689.82 8445.11 7410.10 7350.00 0.298 730054.76 5987954.01 n70 22 7.184 w148 7 49.1 15350.00 72.57 53.16 7718.53 8483.26 7424.93 7364.83 0.843 730092.05 5987983.84 n70 22 7.466 w148 7 47.9 Well Definition Survey Details Report Operator: ARCO Field: Niakuk Well: NK-41PB3 Date: 21:18, 06 Aug 98 Page: 10 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) (ft) (deg) (deg) (ft) (ft) (ft) 15400.00 72.96 53.28 7747.12 8521.51 7439.74 15450.00 72.30 53.45 7775.59 8559.81 7454.67 15500.00 71.96 53.52 7803.91 8598.05 7470.01 15550.00 71.80 53.58 7832.14 8636.28 7485.56 15600.00 71.82 53.36 7860.42 8674.45 7501.17 15650.00 72.39 53.11 7888.90 8712.56 7516.53 15700.00 72.51 52.85 7917.60 8750.63 7531.61 15750.00 72.53 52.76 7946.43 8788.62 7546.63 15800.00 72.30 52.77 7975.27 8826.56 7561.73 15850.00 72.20 52.70 8004.11 8864.46 7576.98 15900.00 72.59 51.86 8033.26 8902.16 7592.10 15950.00 72.48 51.12 8062.96 8939.48 7607.11 16000.00 72.50 51.22 8092.86 8976.63 7622.15 16050.00 72.51 51.24 8122.72 9013.81 7637.18 16100.00 72.36 51.19 8152.58 9050.96 7652.27 16150.00 72.52 50.97 8182.53 9088.05 7667.36 16200.00 72.07 50.75 8212.59 9124.99 7682.56 16250.00 72.15 50.69 8242.72 9161.83 7697.92 16300.00 71.92 50.53 8272.90 9198.58 7713.34 16350.00 72.20 50.47 8303.16 9235.29 7728.74 16400.00 72.65 50.39 8333.52 9272.03 7743.84 16450.00 72.37 50.26 8363.97 9308.74 7758.87 16500.00 72.65 50.22 8394.47 9345.40 7773.90 16550.00 72.82 50.04 8425.08 9382.04 7788.74 16600.00 73.02 49.99 8455.79 9418.66 7803.42 16650.00 73.02 49.91 8486.56 9455.27 7818.02 16700.00 72.74 49.81 8517.36 9491.80 7832.74 16750.00 72.84 49.67 8548.23 9528.25 7847.54 16800.00 72.58 49.59 8579.15 9564.62 7862.40 16850.00 72.25 49.77 8609.99 9600.96 7877.50 16900.00 72.33 49.73 8640.77 9637.31 7892.71 16950.00 72.48 50.26 8671.41 9673.82 7907.83 17000.00 72.52 50.26 8701.89 9710.49 7922.86 17050.00 72.92 50.32 8732.40 9747.22 7937.71 17100.00 72.66 50.34 8762.89 9783.98 7952.51 TVD(SS) (ft) 7379.64 7394.57 7409.91 7425.46 7441.07 7456.43 7471.51 7486.53 7501.63 7516.88 7532.00 7547.01 7562.05 7577.08 7592.17 7607.26 7622.46 7637.82 7653.24 7668.64 7683.74 7698.77 7713.80 7728.64 7743.32 7757.92 7772.64 7787.44 7802.30 7817.40 7832.61 7847.73 7862.76 7877.61 7892.41 DLS (deg/100ft) 0.813 1.359 0.693 0.340 0.420 1.235 0.551 0.176 0.460 0.240 1.781 1.429 0.195 0.043 0.315 0.528 0.993 0.197 0.552 0.572 0.913 0.612 0.565 0.484 0.411 0.153 0.592 0.334 0.542 0.744 0.177 1.054 0.080 0.808 0.521 Easting (feet) 730129.43 730166.87 730204.26 730241.63 730278.94 730316.19 730353.39 730390.51 730427.58 730464.61 730501.43 730537.85 730574.09 730610.37 730646.63 730682.81 730718.85 730754.77 730790.62 730826.41 730862.23 730898.02 730933.76 730969.48 731005.17 731040.85 731076.45 731111.97 731147.41 731182.82 731218.24 731253.83 731289.57 731325.38 731361.22 Northing (feet) Deg Min 5988013.55 n70 22 5988043.14 n70 22 5988072.58 n70 22 5988101.93 n70 22 5988131.32 n70 22 5988160.91 n70 22 5988190.73 n70 22 5988220.67 n70 22 5988250.62 n70 22 Latitude Longitu Sec Deg Min S 7.746 w148 7 46.~ 8.026 w148 7 45.7 8.304 w148 7 44.~ 8.581 w148 7 43.5 8.859 w148 7 42.3 9.139 w148 7 41.2 9.420 w148 7 40.1 9.703 w148 7 39.0 9.987 w148 7 37.9 5988280.56 n70 22 10.270 w148 5988310.82 n70 22 10.556 w148 5988341.61 n70 22 10.848 w148 5988372.59 n70 22 11.141 w148 5988403.54 n70 22 11.435 w148 5988434.48 n70 22 11.728 w148 5988465.51 n70 22 12.022 w148 5988496.66 n70 22 12.317 w148 5988527.86 n70 22 12.613 w148 5988559.12 n70 22 12.909 w148 5988590.45 n70 22 13.206 w148 5988621.88 n70 22 13.505 w148 5988653.40 n70 22 13.804 w148 5988684.97 n70 22 14.103 w148 5988716.65 n70 22 14.404 w148 5988748.43 n70 22 14.705 w148 5988780.27 n70 22 15.007 w148 5988812.14 n70 22 15.310 w148 5988844.07 n70 22 15.613 w148 5988876.05 n70 22 15.917 w148 5988907.96 n70 22 16.220 w148 5988939.79 n70 22 16.522 w148 5988971.50 n70 22 16.823 w148 5989003.05 n70 22 17.122 w148 5989034.63 n70 22 17.422 w148 5989066.19 n70 22 17.721 wl~8 7 36.8 7 35.7 7 34.6 7 33.5 7 32.4 7 31.3 7 30.2 7 29.2 7 28.1 7 27.0 7 25.9 7 24.8 7 23.8[ 7 22.7, 7 21.6' 7 20.6 7 19.5 7 18.4 7 17.3 7 16.3 7 15.2 7 14.2 7 13.1 7 12.0 7 10.9 7 9.9 Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 11 Field: Niakuk Date~ 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu, (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min 17150.00 72.72 50.26 8793.38 9820.71 7967.38 7907.28 0.194 731397.03 5989097.75 n70 22 18.020 w148 7 8.8] 17200.00 72.35 50.14 8823.91 9857.35 7982.39 7922.29 0.775 731432.75 5989129.35 n70 22 18.320 w148 7 7.7! 17250.00 72.38 50.16 8854.44 9893.93 7997.54 7937.44 0.071 731468.41 5989160.96 n70 22 18.620 w148 7 6.6~ 17300.00 72.40 50.01 8885.02 9930.49 8012.66 7952.56 0.289 731504.04 5989192.60 n70 22 18.920 w148 7 5.6~ 17350.00 72.16 50.04 8915.62 9966.99 8027.88 7967.78 0.483 731539.62 5989224.27 n70 22 19.221 w148 7 4.5, 17400.00 72.48 49.98 8946.23 10003.48 8043.07 7982.97 0.650 731575.19 5989255.95 n70 22 19.521 w148 7 3.4' 17450.00 72.11 49.95 8976.87 10039.95 8058.27 7998.17 0.742 731610.74 5989287.65 n70 22 19.822 w148 7 2.41 17500.00 72.43 49.97 9007.51 10076.41 8073.50 8013.40 0.641 731646.28 5989319.35 n70 22 20.123 w148 7 1.3, 17550.00 71.92 49.95 9038.13 10112.86 8088.81 8028.71 1.021 731681.79 5989351.04 n70 22 20.424 w148 7 0.2' 17600.00 72.12 50.01 9068.71 10149.28 8104.24 8044.14 0.416 731717.29 5989382.68 n70 22 20.724 w148 6 59.2~ 17650.00 71.76 50.02 9099.26 10185.70 8119.74 8059.64 0.720 731752.79 5989414.29 n70 22 21.024 w148 6 58.11 17687.10 71.25 49.50 9121.99 10212.56 8131.51 8071.41 1.912 731778.97 5989437.81 n70 22 21.247 w148 6 57.3! 17698.20 71.50 49.30 9128.83 10220.54 8135.05 8074.95 2.826 731786.75 5989444.88 n70 22 21.314 w148 6 57.11 17781.80 70.86 48.40 9180.90 '10280.13 8162.02 8101.92 1.275 731844.76 5989498.69 n70 22 21.825 w148 6 55.3' 17812.30 71.62 47.40 9200.26 10301.56 8171.83 8111.73 3.981 731865.60 5989518.68 n70 22 22.016 w148 6 54.7, 17905.60 73.20 45.90 9261.32 10366.22 8200.03 8139.93 2.284 731928.43 5989581.61 n70 22 22.615 w148 6 52.8! 17998.70 74.24 42.40 9325.43 10428.45 8226.14 8166.04 3.778 731988.73 5989647.54 n70 22 23.245 w148 6 51.01 18092.60 75.93 38.50 9394.47 10487.30 8250.31 8190.21 4.398 732045.50 5989718.29 n70 22 23.923 w148 6 49.3 18187.30 78.50 38.30 9466.84 10544.65 8271.27 8211.17 2.722 732100.69 5989792.32 n70 22 24.634 w148 6 47.61 18280.80 78.85 37.90 9538.99 10601.22 8289.63 8229.53 0.562 732155.10 5989866.10 n70 22 25.343 w148 6 45.9 18375.90 80.80 35.90 9613.83 10657.42 8306.43 8246.33 2.914 732209.05 5989942.58 n70 22 26.078 w148 6 44.3 18468.70 82.67 33.80 9689.19 10709.88 8319.77 8259.67 3.012 732259.26 5990019.46 n70 22 26.818 w148 6 42.7 18561.60 84.77 32.00 9766.72 10760.04 8329.93 8269.83 2.970 732307.09 5990098.43 n70 22 27.580 w148 6 41.3 18654.00 85.23 31.90 9844.82 10808.75 8337.99 8277.89 0.509 732353.47 5990177.94 n70 22 28.348 w148 6 39.8 18746.00 85.40 32.00 9922.63 10857.27 8345.50 8285.40 0.214 732399.66 "5990257.14 n70 22 29.112 w148 6 38.4. 18842.40 84.63 32.20 10003.98 10908.30 8353.88 8293.78 0.825 732448.26 5990339.96 n70 22 29.912 w148 6 36.9, 18936.50 84.74 32.30 10083.22 10958.30 8362.59 8302.49 0.158 732495.89 5990420.65 n70 22 30.690 w148 6 35.4! 19029.50 84.54 32.50 10161.40 11007.91 8371.28 8311.18 0.303 732543.17 5990500.26 n70 22 31.458 w148 6 34.0~ 19120.70 84.42 32.90 10237.79 11056.95 8380.05 8319.95 0.456 732589.92 5990578.06 n70 22 32.209 w148 6 32.6( 19215.90 84.77 32.10 10317.72 11107.87 8389.02 8328.92 0.914 732638.46 5990659.46 n70 22 32.994 w148 6 31.1( 19308.80 84.71 32.20 10396.05 11157.10 8397.54 8337.44 0.125 732685.34 5990739.20 n70 22 33.764 w148 6 29.6t 19402.20 85.14 33.00 10474.42 11207.23 8405.80 8345.70 0.969 732733.12 5990819.03 n70 22 34.534 w148 6 28.1~ 19498.30 85.54 32.60 10554.93 11259.11 8413.61 8353.51 0.588 732782.60 5990901.03 n70 22 35.325 w148 6 26.62 19592.10 85.89 33.90 10633.16 11310.40 8420.62 8360.52 1.432 732831.54 5990980.74 n70 22 36.093 w148 6 25.1( 19685.30 85.88 32.60 10710.89 11361.36 8427.30 8367.20 1.391 732880.19 5991059.95 n70 22 36.857 w148 6 23.6~ Well Definition Survey Details Report Operator: ARCO Well: NK-41PB3 Page: 12 Field: Niakuk Date~ 21:18, 06 Aug 98 Description : Final definitive (trend extrapolation) Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitu (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min S 19776.96 85.17 30.80 10788.64 11409.38 8434.46 8374.36 2.105 732925.88 5991139.07 n70 22 37.621 w148 6 22.2 19873.30 85.14 31.20 10870.92 11458.82 8442.59 8382.49 0.415 732972.86 5991222.78 n70 22 38.430 w148 6 20.8 19966.30 85.28 31.60 10950.03 11507.11 8450.36 8390.26 0.454 733018.78 5991303.27 n70 22 39.207 w148 6 19.3 20059.80 84.82 31.60 11029.36 11555.92 8458.43 8398.33 0.492 733065.22 5991384.02 n70 22 39.986 w148 6 17.9, 20157.73 84.80 30.40 11112.96 11606.15 8467.29 8407.19 1.221 733112.95 5991469.06 n70 22 40.808 w148 6 16.4! 20250.20 84.88 30.60 11192.31 11652.89 8475.60 8415.50 0.232 733157.32 5991549.76 n70 22 41.587 w148 6 15.11 20343.00 84.82 29.30 11272.39 11699.03 8483.93 8423.83 1.397 733201.07 5991631.17 n70 22 42.374 w148 6 13.7~ 20437.70 85.26 30.80 11354.06 11746.27 8492.12 8432.02 1.645 733245.87 5991714.19 n70 22 43.177 w148 6 12.3' 20531.90 85.60 31.10 11434.59 11794.57 8499.63 8439.53 0.481 733291.76 5991796.11 n70 22 43.968 w148 6 10.9( 20625.00 85.83 31.10 11514.08 11842.52 8506.58 8446.48 0.247 733337.33 5991876.99 n70 22 44.749 w148 6 9.5! 20723.60 85.83 30.80 11598.42 11893.09 8513.75 8453.65 0.303 733385.39 5991962.78 n70 22 45.578 w148 6 8.0' 20818.70 84.65 29.50 11680.37 11940.69 8521.64 8461.54 1.843 733430.54 5992046.10 n70 22 46.383 w148 6 6.6' 20910.60 84.88 30.30 11759.70 11986.31 8530.03 8469.93 0.902 733473.79 5992126.74 n70 22 47.162 w148 6 5.3[ 20996.70 85.08 30.90 11833.53 12029.97 8537.56 8477.46 0.732 733515.24 5992201.82 n70 22 47.888 w148 6 4.0! 21089.70 83.22 30.06 11913.25 12076.90 8547.04 8486.94 2.193 733559.79 5992282.90 n70 22 48.671 w148 6 2.6' 21181.80 80.54 28.30 11992.84 12121.35 8560.05 8499.95 3.471 733601.86 5992363.77 n70 22 49.453 w148 6 1.3' 21275.10 78.59 27.70 12073.86 12164.43 8576.95 8516.85 2.184 733642.52 5992446.02 n70 22 50.249 w148 6 0.11 21371.00 76.80 28.80 12156.39 12208.77 8597.39 8537.29 2.177 733684.40 5992529.82 n70 22 51.060 w148 5 58.81 21463.50 73.56 28.00 12235.04 12251.30 8621.04 8560.94 3.601 733724.58 5992609.69 n70 22 51.833 w148 5 57.5! 21558.80 71.65 27.10 12315.66 12293.36 8649.53 8589.43 2.197 733764.23 5992691.52 n70 22 52.625 w148 5 56.31 21653.30 69.74 27.60 12394.87 12334.34 8680.77 8620.67 2.082 733802.84 5992771.91 n70 22 53.404 w148 5 55.11 21745.40 66.35 27.10 12470.73 12373.58 8715.20 8655.10 3.715 733839.82 5992848.89 n70 22 54.149 w148 5 53.9~ 21840.50 63.35 27.00 12547.39 12412.72 8755.62 8695.52 3.156 733876.68 5992926.67 n70 22 54.902 w148 5 52.81 21933.70 61.30 26.70 12621.03 12450.00 8798.90 8738.80 2.218 733911.76 5993001.37 n70 22 55.626 w148 5 51.7~ 22093.00 57.80 26.19 12743.96 12511.15 8879.62 8819.52 2.217 733969.24 5993126.06 n70 22 56.834 w148 5 49.9~ Well Definition Survey Details Report Operator: ARCO Well: NK-41 Page: 13 Field: Niakuk Date: 18:43, 06 Aug 98 Description : Final Definitive Survey Ail Azimuths are relative to TRUE North MD Inc Azi North East TVD(BRT) TVD(SS) DLS Easting Northing Latitude Longitud, (ft) (deg) (deg) (ft) (ft) (ft) (ft) (deg/100ft) (feet) (feet) Deg Min Sec Deg Min Se, 23069.50 33.83 20.60 13362.14 12775.94 9583.56 9523.46 1.738 734215.60 5993751.77 n70 23 2.909 w148 5 42.14 23742.00 21.58 20.60 13654.25 12885.73 10177.82 10117.72 1.822 734316.70 5994046.99 n70 23 5.780 w148 5 38.91 BP EXPLORATIpN TO: FROM: BP Exploration (Alaska) Inc, P,O. Box 196612 Anchorage, Alaska 99519-6§12 TELECOPY SATELLITEUNIT // Name: r" .~, ~ ...... cOmpany: Name & Ext.' ~ ~//__//~ Department: Fax # NOTES: PAGES TO FOLLOW (Do not include cover sheet) SECURITY CLASSIFICATION I PRIVATE SECRET CONFIDENTIAL .... I SATELLITE FAX MACHINE FAX# .... , $64-519,3__, ..... CONFIRM# 564-5189 .il, OCT E8 '97 ~'~ 05;:07PH SHFIRED SERV'TCES; DRILLTHG ~L AOGCC Individual Well Geological Materials Inventory PERMIT DATA T DATA PLUS 97-116 DRY CTTNGS #980 C 20000-23742 PB1-PB3 Page: 1 Date: 03/09/98 RUN RECVD 10/07/97 10-407 R COMPLETION DATE / / / DAILY WELL ODS R / / / TO / / / Are dry ditch samples required? yes no And received? Was the well cored? yes no Analysis & description received? Are well tests required? yes no Received? yes no Well is in compliance Initial COMMENTS / / / / / / yes no yes no BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 October 7th, 1997 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Dear AOGCC Representative, Per the terms of the Tract 75 agreement enclosed are the following core samples for Niakuk #41, Core Samples Depth Dry Cuttings: NK-41 Dry Cuttings: NK-41 PB1 Dry Cuttings: NK-41 PB2 Dry Cuttings NK-41 PB3 22040-23230' 23230-23742'j 20000-20600'~- 20000-21230'~ 22010-22070'"" Please contact me at 564-4531 if you have any questions. Sincerely, Katie Nitzberg,~r. Gb.__¢~gist Greater Point Mclntyre Area MS Enclosures Please .~ign below and return to Marian rec' pt oftrans tal. Sloan, BPX, Mail Stop MB7-2 for BP EXPLORATION Rp E;q~loraliorl (Alaska) Int.. 900 East Bon.o~ ~ule~rd P~, Box 1~61~ An~har~e, AI~s~ 99519.6612 (g~) ~1~111 DATE: TO: FROM: TELECOPY Company: Location: /q~,,.~..? Fax Number: Department Location: Fax Number: P_AG.E$ TO FOLLO_tSr) Si:j? 1 t 1997 D.it ~ Gas Cons. Comt~ts~" 9/10/97 1. Pick up 75 joints of 3 ~" drill pipe and RIH; circulate and heat. mud while running in. RIH to TD at 23,742': circulate and ensure mud is warm and hole clean. 2. Set 1200 ft abandonment plug from 23,740' to 22,540' as follows: m 27 bbls water w/2 gal/bbl surfactant m 105 bbls 17 ppg cement, mixed on the fly (volume based on 9 V:" hole) -- 3 bbls water w/2 gal/bbl surfactant -- displace with OBM 3. Pick up to t 22,250' and circulate bottoms up. 4. Displace OBM with ±17.3 ppg water base mud to :e18,800' (9 W' hole). Precede WBM with 50 bbl hi-vis OBM spacer, 5. POH to 18,800' circulate bottoms up. 6, Set 1500 ft kick-offplug to -17,300' as follows: -- 27 bbls water w/2 galrobl surfactant m 132 bbls 17 ppg cement, mixed on the fly (volume based on 9 V2" hole) -- 3 bbls water w! 2 galLbbl surfactant -- displace with OBM 7. Pull out of hole and circulate at a high rate to ensure the drill pipe is free of cement. 8. POH and lay down drill pipe and inspect for cement residue. Rattle any joints with cement. 9, Side-track plan to follow. MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: David Johnston, DATE: Chairman THRU: Blair Wondzell, ~ FILE NO: P. I. Supervisor ~/'~. FROM: Chuck Scheve, ¢_.~ SUBJECT: Petroleum Inspector September 2, 1997 az1 kibee, doc BOPE Test Pool Rig 7 Niakuk NK-41 PTD 97-116 Tuesday September 2,1997: I traveled to Pool Rig 7 and witnessed the weekly BOPE test on the Niakuk NK-41 Well. As the attached AOGCC BOPE Test Report shows,the test lasted 2.5 hours and there were no failures. The rig was clean and alt equipment appeared to be in good working order. The location was clear and all excess equipment was properly stored. Summary: ! witnessed the weekly BOPE test on Pool Arctic Rig 7 drilling BPX's Niakuk NK-41 Well. Pool 7, 912/97, test time 2.5 hours, no failures Attachment: az1 kibee.xls X Unclassified STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drlg: X Workover: Drlg Contractor: POOL Rig No. Operator: BP Exploration Well Name: Niakuk NK-41 Casing Size: Set @ Test: Initial Weekly X Other DATE: 9/2/97 7 PTD # 97/116 Rig Ph.# 659-4815 Rep.: Les Peak Rig Rep.: Jim Davidson Location: Sec. 36 T. 12 N R. 15 E Meridian UM MISC. INSPECTIONS: Location Gen.: OK Housekeeping: OK (Gen) PTD On Location OK Standing Order Posted YES FLOOR SAFETY VALVES: Quan. Well Sign YES Upper Kelly / IBOP 1 Drl. Rig OK Lower Kelly / IBOP 1 Hazard Sec. YES" Ball Type 1 · Inside BOP 1 Test Pressure P/F 250/5,000 P 250/5,000 250/5,000 250/5,000 BOP STACK: Annular Preventer Pipe Rams Lower Pipe Rams Blind Rams Choke Ln. Valves HCR Valves Kill Line Valves Check Valve Quan. Test Press. P/F I 250/3500 P 1 250~5,000 P 1 P 250/5,000 250/5,000 1 I 250/5,000 P 2 250/5,000 P 1 250/5,000 .P N/A N/A MUD SYSTEM: Visual Alarm Trip Tank OK OK Pit Level Indicators OK OK Flow Indicator OK OK Meth Gas Detector OK OK H2S Gas Detector OK OK CHOKE MANIFOLD: No. Valves 17 No. Flanges 34 Manual Chokes 1 Hydraulic Chokes 2 Test Pressure 250~5,000 250~5,000 Functioned Functioned P/F P/F ACCUMULATOR SYSTEM: System Pressure Pressure After Closure 200 psi Attained After Closure ~ System Pressure Attained Blind Switch Covers: Master: Nitgn. Btl's: 6 (f~ 2,100 3,150 ! P 1,650 P minutes 22 sec. minutes 30 sec. Yes Remote: Yes Psig. Number of Failures: 0 ,Test Time: 2.5 Hours. Number of valves tested 25 Repair or Replacement of Failed Equipment will be made within 0 days. Notify the Inspector and follow with Written or Faxed verification to the AOGCC Commission Office at: Fax No. 276-7542 Inspector North Slope Pager No. 659-3607 If your call is not returned by the inspector within 12 hours please contact the P. I. Supervisor at 279-1433 REMARKS: Good test Distribution: orig-Well File c- Oper./Rig c- Database c - Trip Rpt File c- Inspector FI-021L (Rev. 12/94) STATE WITNESS REQUIRED? YES X NO 24 HOUR NOTICE GIVEN YES X NO Waived By: Witnessed By: AZ1 KIBEE.XLS Chuck Scheve TONY KNOI/VLE$, GOYEi~NOI~ ALASKA OIL AND GAS CONSERVATION COMMISSION June 19. 1997 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 275-7542 Steve Shultz Senior Drilling Engineer BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519-6612 ac; Tract 75 NK-4 l BP Exploration (Alaska), Inc. Permit No: 97-116 Sur. Loc.: 1474'NSL,717'WEL, SEC 36,T12N, R15E.UM Btmholc Loc.: 4591'NSL,3167'WEL. SEC 21,T12N.R16E. UM Dear Mr. Shultz: Enclosed is thc approved application for permit to drill the above referenced well. The permit to drill docs not exempt you from obtaining additional permits required bv law from other governmental agencies, and docs not authorize conducting drilling operations until all other required permitting determinations are made. A weeklv status report is required from the time the well is spudded until it is suspended or plugged and abandoned. Thc report should be a generalized synopsis of thc week's activitics and is cxclusivclv for the Commission's internal usc. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25.035. Sufficient notice (approximately 24 hours) of thc BOPE test performed bcfore drilling below the surface casing shoe must be given so that a reprcscntativc of thc Commission may witness the test. Notice may be given by contacting thc Commission petroleum ficld inspector on the North Slope David ~. Johnston Chainna~,,~.,~ BY ORDER OF MMISSION dlffEnclosures cc; Department of Fish & Game, Habitat Section w/o encl. Departmcnt of Environmental Conservation w/o cncl. ,--- STATE OF ALASKA ALASKA OIL, ,ND GAS CONSERVATION COMM, . _~ION PERMIT TO DRILL 20 AAC 25.005 REVISED: 06/17/97 la. TyPe of work [] Drill [] Redrill lb. Type of well [] Exploratory [] Stratigraphic Test [] Development Oil [] Re-Entry [] Deepen []Service [] Development Gas [] Sin~lle Zone [] Multiple Zone 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. Plan RTE - 60.2' Undefined 3. Address 6. Property Designation P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 312827 4. Location of well at surface 7. Unit or Property Name 111. Type Bond (See 20 AAC 25.025) 1474' NSL, 717' WEL, SEC. 36, T12N, R15E, UM Tract 75 At top of productive interval 8. Well Number Number 2S100302630-277 3997' NSL, 3723' WEL, SEC. 21, T12N, R16E, UM NK-41 At total depth 9. Approximate spud date Amount $200,000.00 4591' NSL, 3167' WEL, SEC. 21, T12N, R16E, UM 06/25/97 12. Distance to nearest property line113. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ADL 034634, 4591'I NK-20, 13' at 700' TVD 5646 23032' MD / 9997' 'f-VD 16. To be completed for deviated wells 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 1800' Maximum Hole Angle 71.6o Maximum surface 3900 psig, At total depth ('I-VD) 9997' / 4900 psig 18. Casing Program Specifications Setting Depth Size Top Bottom Quantity of Cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 30" 20" 94# H-40 Weld 80' Surface Surface 80' 80' 260 sx Arctic Set (Approx.) 16" 13-3/8" 68# L-80 BTC 7640' Surface Surface 7680' 5010' :~360 sx PF 'E', 1190 sx 'G', 50 sx PF 'C' 12-1/4" 9-5/8" 47# L-80 BTC-Mod 17282' Surface Surface 17323' 8060' 740 sx Class 'G' 8-1/2" 7" 29# L-80 Hydril 511 5859' 17173' 8013' 23032' 9997' 410 sx Class 'G' 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: true measured vertical feet feet Plugs(measured) 0RI6INAL Effective depth: measured feet Junk (measured) true vertical feet Casing Length Size Cemented M D TVD Structural Conductor Surface Intermediate ~ ~'E V~-I'~ Production ~ i . ~- Liner Perforation depth: measured /~_8~ ~jl .&~ 6aS .00~'iSo true vertical '- ~fll~i'_~g.~ 20. Attachments [] Filing Fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Drilling Program [] Drilling Fluid Program []Time vs Depth Plot [] Refraction Analysis [] Seabed Report [] 20 AAC 25.050 Requirements Contact Engineer Name/Number: Larry ,J(Volfson, 564-5510 j Prepared By Name/Number: Kathy Campoamor, 564-5122 21' I hereby certifYsigned Steve Shultzthat the fCf/'going -'"~'--- 'v is/vt~e ~ir~dcc~rrect~,..,~. t°the best of my knowledge ~//~c,~ (~ 'LC.-"'~ Title Senior Drilling Engineer Date ,,_/ ... ""-- ~ '~'~ommission Use Only Permit Number I APl Number ] Appro~ial Date I See cover letter ~.~-//'~//.~" 507. O ~- ~ '" ~ ~-- ~ ~ ~) c~--~ for other requirements Conditions of Approval: Samples Required []Yes []No Mud Log Required [~]Yes [] No Hydrogen Sulfide Measures []Yes .~ No Directional Survey Required J~Yes [] No Required Working Pressure for BOPE [-I 2M; I-}3M; ,,~SM; [-] 10M; E] 15M Other: Original Signed By byorderof 4( / Approved By David W. Johnston Commissioner the commission Date Form 10-401 Rev. 12-01-85 Submit In ~i'riplicate MEMORANDUM TO: THRU: State of Alaska Alaska Oil and Gas Conservation Commission Blair Wondzell, ~ P. I. Supervisor John Spaulding, ~.~ SUBJECT: FROM: Petroleum Insp.//- DATE: July 7, 1997 FILE NO: azllgheg.doc BOPE Test Pool 7 BPX Niakuk NK-41 PTD 97-116 Monday July 7, 1997: I traveled to BPX's Niakuk Field to witness the BOPE Test on Pool Rig 7. The AOGCC BOPE Test Report is atteched for reference. As noted on the test report 6 failures were observed. The blind / shear rams initially would not even hold a Iow pressure test of 500 psi. These were replaced with a brand new set of inserts, this set also would not hold the Iow pressure test, this set was replaced with a set of blind ram inserts, these finally passed the pressure test. The choke line HCR had recently been rebuilt and the stem packing leaked on the Iow pressure test. After several attempts to grease the stem packing, the valve was dissambled and the packing removed. The packing that was in use on the stem was rope packing, this type of packing is not necessasarily designed for high pressure use. The manufacturer requires a chevron style packing for high pressure usage. Two flanges leaked on the choke manifold and one flange leaked on the on the BOPE stack these were all repaired and retested. Summary: I witnessed the BOPE Test on Pool rig 7 Test time 13.5 hrs., 6 failures Attachments: azllgheg.xls X Unclassified Confidential (Unclassified if document removed) STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drlg: X Drlg Contractor: Operator: Well Name: Casing Size: 13 3/8" Test: Initial X Workover: DATE: Pool Rig No. 7 PTD # 97-116 Rig Ph.# BPX / SSD Rig Rep.: Jim Davidson NK,41 Co. Rep.: Les Peak Set @ 7041'md Location: Sec. 26 T. 12N R. 15E Meridian Umiat Weekly Other 7/7/97 659-4815 TEST DATA MISC. INSPECTIONS: _ :ation Gen.: ok i ;:;usekeeping: ok (Gen) PTD On Location yes Standing Order Posted yes Well Sign yes Drl. Rig ok Hazard Sec. yes BOP STACK: Annular Preventer Pipe Rams Lower Pipe Rams Blind Rams Choke Ln. Valves HCR Valves Kill Line Valves Check Valve FLOOR SAFETY VALVES: Upper Kelly / IBOP Lower Kelly / IBOP Ball Type Inside BOP Quan. 1 1 1 1 Test Pressure P/F 500/5,000 P 500/5,000 P 500/5,000 P 500/5,000 P Quan. Test Press. P/F Test I 300/3,000 P Pressure P/F 16 500/5,000 P I 500/5,000 P I 500/5,000 P I 500/5,000 P* I 500/5,000 P* 2 500/5,000 P I 500/5,000 P CHOKE MANIFOLD: NO. Valves No. Flanges Manual Chokes Hydraulic Chokes 38 500/5,000 P 2 P Func~oned Functioned P ACCUMULATOR SYSTEM: System Pressure 3,100 ] P Pressure After Closure 1,600 I P MUD SYSTEM: Visual Alarm 200 psi Attained After Closure minutes 31 Trip Tank ok ok System Pressure Attained 2 minutes 48 Pit Level Indicators ok ok Blind Switch Covers: Master: yes Remote: Flow Indicator ok ok Nitgn. Btl's: 6 ~ 1950 avvg. Meth Gas Detector ok ok Psig. H2S Gas Detector ok ok sec. sec. yes TEST RESULTS Number of Failures: 6 ,Test Time: 13.5 Hours. Number of valves tested 28 Repair or Replacement of Failed Equipment will be made within 2 days. Notify the Inspector and follow with Written or Faxed verification to the AOGCC Commission Office at: Fax No. 276-7542 Inspector North Slope Pager No. 659-3607 or 3687 If your call is not returned by the inspector within 12 hours please contact the P. I. Supervisor at 279-1433 REMARKS: Blind/shear rams failed ~nd were rebuilt twice'choke HCR failed-no rep;acement packing replaced with manual valve until new valve arrives%l flange on BOP stack failed tightened and retested ok,'2 flanges on choke system failed; tightened and tested ok ~ Distribution: orig-Well File c - Oper./Rig c ~ Database c ~ Trip Rpt File c- Inspector STATE WITNESS REQUIRED? YES X NO 24 HOUR NOTICE GIVEN YES X NO Waived By: Witnessed By: FI-021L (Rev_ 12/94) AZ1LGHEG.XLS NK-41 Well Plan Summary Surface Location: 1474' FSL 717' FEL Sec 36 T12N R15E Target Location: 3997' FSL 3723' FEL Sec 21 T12N R16E Bottom Hole Location: 4591' FSL 3167' FEL Sec 21 T12N R16E IAFE Number: I 731190 [ I Rig: [ Pool #7 I I Estimated Start Date: [ 6/25/97 I [Operating days: I 50 ] IMD: I 23,032' I I TVD: [ 9,997' I I~E: I 60.2' I IType of Well (producer or injector): Well Design (conventional, sHmhole, etc.): Producer Conventional / ERD Formation Markers: (all depths RKB) Measured True Vertical Formation Mud Formation Tops Depth, ft Depth, ft Gradient, ppg Weight, ppg Base Permafrost 1,760 1,760 8.55~ 8.8 SV3 5,877 4,440 8.551 9.1 SV1 7,750 5,035 8.551 9.1 Ugnu 9,450 5,570 8.652 9.1 West Sak 15,268 7,410 8.802 9.2 Colville 16,058 7,660 8.80 9.2 Tuffs/Shale Wall 20,011 8,910 9.20 9.6 HRZ 21,611 9,430 9.40 10.43 Kup aruk 22,143 9,635 9.404 10.4 Kingak 22,782 9,895 9.40 10.4 Casing~ubing Program: (aH depths feet RKB) Hole Size Csg/Tbg Wt/Ft Grade Conn. Length Top Btm OD MD/TVD MD/TVD 30" 20" 94# H-40 WLD 80 GL 80/80 16" 13 3/8" 68# L-80 BTC 7640 GL 7680/5010 12 1/4" 9 5/8" 47# L-80 BTC-M 17282 GL 17323/8060 8 1/2" 7" 29# L-80 Hydril Sll 5859 17173/8013 23032/9997 N/A 4 1/2" 12.6# L-80 IBT-Mod 22000 GL 22000/9578 1 Assumed seawater gradient. 2 Formation pressure gradient based on RFT data from NK-17. 3 Mud weight required for wellbore stability. 4 New fault block penetration; assume original reservoir pressure of Niakuk reser¢~'i~.-~ NK-41 Drilling Permit Rev 2 Loggin_eJFormation Evaluation Program: Surface MWD/GR ............ ....................................... ..................................... Production MWD/GR; DWOB/DTOQ CDR/ADN; CDR equipped w/PWD (Pressure While Drilling tool) Wireline: Schlumberger RFT/BHC Cased Hole Logs: Schlumberger USIT/Continuous Gyro Mud Proeram: -- Surface Hole (0-7680'): Fresh Water Surface Hole Mud Interval Density Viscosity YP LSR YP Gel-10 sec Fluid (ppg) (seconds) Loss Initial 8.6-9.2 300-200 70-50 30-40 35-55 12-15 SV3 8.9-9.4 120-200 40-25 18-11 20-35 6-8 Interval TD 9.0-9.4 100-150 25-35 10-15 20-35 6-8 Intermediate Hole (7680'-17323'): Low Solids Non-Dispersed Interval Density Viscosity YP LSR YP pH Fluid (ppg) (seconds) Loss Initial 8.6-8.8 42-48 8-14 4-7 10.5-9.0 12-8 Ugnu 9.0-9.2 48-60 18-25 8-11 9.0-10.0 8-6 West Sak 9.1-9.3 48-60 18-25 8-11 9.0-10.0 8-6 Colville 9.2-9.4 48-60 18-25 8-11 9.0-10.0 8-6 Interval TD 9.2-9.4 48-60 18-25 8-11 9.0-10.0 4 Production Hole (17323'-23032'): Mineral Oil Base Mud Interval Density PV YP LSR YP Electric Fluid (ppg) Viscosity Stability Loss Initial 9.6-9.8 15-20 15-20 10-12 700-1000 <6 HTHP HRZ 10.2-10.4 20-30 15-20 10-12 700-1000 <5 HTHP Interval TD 10.4 20-30 15-20 10-12 700-1000 <5 HTHP Mud Disposal Mud and cuttings will be hauled-off Heald Point and disposed at the appropriate facility. 2 06/17/97--LW NK-41 Drilling Permit Rev 2 Cementing Program Hole Category Casing VolumeI Type of Cement Properties2 Size/Depth Surface First Stage 13 3/8" @ Lead3 Lead Lead 7,680' 840 sx Permafrost "E" Den 12.0 ppg 325 bbls Yield 2.17 ft 3/sx Water 11.6 gps TI' 4.0 hrs Tail4 Tail Tail 1190 sx Class "G" w/ Den 15.8 ppg 244 bbls 0.2 % CFR-3, Yield 1.15 ft 3/sx 0.2 % Halad 344 Water 5.0 gps TT 3.5 hrs Second Stage Stage collar Lead5 Lead Lead @ 2,000' 2520 sx Permafrost "E" Same as above 974 bbls Tail6 Tail Tail. 50 sx Permafrost "C" Den 15.6 ppg 9 bbls Yield 0.94 ft 3/sx Water 3.5 gps TI' 3.5 hrs Intermediate 9 5/8" @ 740 sx7 Class "G" w/ Den 15.8 ppg 17,210 152 bbls 0.2 % CFR-3 Yield 1.15 ft 3/sx 0.2 % Halad 344 Water 5.0 gps 0.1% HR-5 TI' 4.0-5.0 hrs Production 7" @ 410 sx8 Class "G" w/ Den 15.6 ppg 23,205' 88 bbls 2.0 gps Latex Yield 1.2 ft 3/sx 0.36 gps 434B Water 3.5 gps 0.05 gps D3 TI' Batch mix + 1.0 % Gel 4.5 + hrs 0.4 % CFR-3 0.1% HR-5 Rounded up to the nearest 10 sacks. Thickening time required; actual times should be based on job requirements and lab tests. Open hole volume from top of tail to stage collar + 30% excess. 750' TVD open hole volume + 30% excess + 80' shoe joint. Open hole volume from stage collar to surface + 350% excess + casing capacity to stage collar. No fill criteria--sufficient volume to ensure high strength cement outside of stage collar. 2000' open hole volume (12 1/4" x 9 5/8") + 30% excess + 80' shoe joint. 1000' above T. Kuparuk, open hole volume (9 3/4" x 7") + 80' shoe joint; actual hole volume based on caliper. 3 06/17/97--LW NK-41 Drilling Permit Rev 2 Directional: KOP: Max. Hole Angle: Close Approach Wells: Survey Program: 1800' Begin variable build-1.0-2.5°/100 ~build to 71.6° @ 47° azimuth 71.4° 4,783 '-23,032'; Turn to final azimuths43° @ 5,200' Minimum Normal Distance---Survey-to-Survey NK-18 147' @ 4800'; well to be shut-in until surface ....................................................... ..c...a..s..!..n...g...!..s....s...e..t.: ........................................................................................... NK-20 13' @ 700'; well to be shut-in until surface ....................................................... ........................................................................................... NK-21 30' @ 1500'; well to be shut-in until surface casing is set. Surface - 8,800' Single shot MWD surveys; if magnetic ....................................................... ...... Surface - 8,800' In-hole reference gyro; run gyro as deep as ....................................................... ..................................................................................................... ...a...8...0...0.2..--..T? .......................... ...................................................................................... Surface - TD Gyro---Gyrodata continuous mode .-during completion DriHine Hazards/Risks -- Reservoir Pressure This will be the first well in the Segment 6 fault block of the Niakuk field. It' s assumed the Kupamk formation pressure will be the same as the original reservoir pressure found elsewhere in the Niakuk field--9.4 ppg EMW. The maximum anticipated surface pressure is 3900 psi; based on a bottom hole pressure of 4900 psi at 9997' tvd and dry gas to surface. Lost Circulation/Faults The southern fault of Segment 6 is 1500 ft south of the well and has 135 ft of throw. The seismic shows this fault cuts the HRZ and continues up to the top Shale Wall/Top Tuffs. The well trajectory cuts this fault below the Shale Wall and could cause lost circulation. Small faults--20 ft of throw--to the north of the target at the base of the Kuparuk could be a problem only if the wellbore misses the target polygon to the north. Close Approaches NK-18 passes the close approach criteria for flowing wells but by only 12 ft at 4800'md, and will be shut-in at the tail pipe until surface casing is set. NK-20 and NK-21 fail the flowing well criteria and will also be shut-in at the tubing tail until surface casing is set. Well Control: Well control equipment consisting of 5000 psi WP pipe rams, blind rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Diverter, BOPE and mud fluid system schematics on file with AOGCC. 4 06/17/97--LW NK-41 Drilling Permit Rev 2 Contacts: Office Home Pager SSD Drilling Superintendent Adrian Clark 564-4720 345-9066 275-1779 Senior Drilling Engineer Steve Shultz 564-5405 373-1657 275-9459 Operations Drlg Engr Larry Wolfson 564-5510 345-6624 275-1711 Asset Drilling Engineer Dan Stone 654-4002 348-0239 5 06/17/97---LW NK-41 Drilling Permit Rev 2 Operations Summary o . . o . MIRU drilling rig. NU and function test diverter. Spud well and drill 16" hole to 1,800'; directionally drill well to 7,680' per attached directional program. Run and cement 13 3/8" casing in two stages to ensure cement returns to surface. Test casing to 3000 psi for 30 minutes. Install and test BOP to 5000 psi. Note AOGCC witness or waiver on the morning report. M/U 12 1/4" BHA and drill 20' of new hole and perform LOT. Drill to 8800' and run an in-hole reference gyro. Drill to intermediate casing point at 17,323'. Run and cement 9 5/8" casing. Test casing to 3000 psi for 10 minutes. Test BOP to 5000 psi. Note AOGCC witness or waiver on the morning report. P/U 8 1/2" BHA, drill 10' new hole and perform LOT. Drill to TD @ 23,032'. . Run open hole logs. Run and cement 7" production liner. o 10. 11. 12. Run cased hole logs. Run drilling pipe conveyed perforating guns and perforate well. Run 4 1/2" completion. Set packer and test tubing to 4000 psi; annulus to 3500 psi. Freeze protect well. ND BOP and NU tree assembly. Test tree assembly to 5000 psi. 13. Secure well and release rig. Attachments · Directional Plan · Plat of Affected PropertiesmSubmitted w/Rev 1-6/16/97 · Letter of Non-Objection from BPX--Submitted w/Rev 1-6/16/97 · Letter of Non-Objection from ARCO--Submitted w/Rev 1-6/16/97 · Plat of Nearby Wellbores--3 oversize sheets--Submitted w/Rev 1-6/16/97 6 06/17/97--LW AnadrllL Schlumberger Alaska District l[12 Bast 80th AYe~ue Anchorage, AK 99518 (907))49-4511 Pax 344-2L60 DIRECTIONAL WELL PLAN for $~ARBD $SRVICH~ DRILLING ffell ......... : NK-41 (P14) (T75-1 Tgt) Field ........ : Niakuk, Main Pad Computat£e~..: Minimum Curvature Un£~s ........ : F~T Surface Lat..: 70.34766734 ~ Surface ~ong.: 148.L9892609 W Legal DescrlDtion Surface ...... : 1474 FSL 717 FHL S36 T12N R]SE UM Target ....... : 3997 F~L 3723 ~H~ S21 TA2N R~6~ BHL .......... : 4~9~ FSL 3167 PBL S21 T~2N RI6H U~4 LOCATIONS - ALASKA Zone: X-Coord 72194£.38 733823.00 734359.O0 Y-Coord 5980017.95 5993472.00 5994082.39 PROPOSED WELL PROFII.~ STATION ~EASURED I~CLN D~R~CTION IDBNTIFICJ%TION DEPTH ANG~B AZIMUT~ mmm{{:}{m:~mm{:~mm{~ mmm{m~m ~:mmmc mmm{m~::: ~ 0.00 0.00 0.00 ~E PB~OST ~60.20 0~00 ~.00 BUI~ ~.5/~00 ~900.0~ ~.00 47.03 BUrLD 2/~0~ 2000.00 2.50 47.03 VERT]CAL-DBPq]{$ TWD SUB-SEA 0.00 -60.20 1760.20 1700.00 1800.00 1739.80 [899.99 1839.79 [999.95 L939.75 S~CT]ON DHPART O.O0 0.00 0.00 0.87 3.92 Prepared ..... : L7 Jun 1997 Vert sect az-: 43.38 KB eLevation.~ 60.20 It Magnetic Ocin: +28.792 (8) 8ca~e FaCtor.; 0.99995591 Convergence..: +1.69622588 ANADRILL AKA-DPC APPROVED FOP, PERMITTING, ONLY PLAN cs' CDORD]NATES-PROM ALASKA Zone 4 TOOL WEL~HHAD X Y FACB 100 ~mms:;mmmm n~:~Emmmm mmmfr:=~s smmmmo{n:: mmmm 0.00 N 0.00 E 721841.38 59800~7.95 47R 0.00 0.00 ~ 0.00 E 72184L.38 59000[?.9S 47R 0.00 0.00 N 0.00 E g2184L.38 5980017.95 47R 0.00 0.59 N 0.64 H ?21842.00 5980018-$6 47R 2.68 N 2.07 H 72~844.17 5900020.7L 47R 1.50 BUILD 2.5/100 2L00.00 4.50 47.03 2200.00 7.00 47.03 :~-'-,~ ~ 2300.00 9,50 47.03 ,.- .;,~ h.~c; / ?.~i~,~ 2,~ oo. oo t2. oo 47. o3 ...... ,.,=-=~, 2500.00 14,~0 , ~-:,'~ .-~ ...... 2600,00 ~7. O0 ~7.03 '~ .......... = 2700.00 1~.50 ~7.03 (~adrill (c)97 NK41D14 3.0C L0:36 2099.75 2039.55 2199.24 2139.04 2298.20 2238.00 2396.44 2336.24 2493.77 2433.57 2590.0~ 2529.8~ 2684.97 2624.77 [0.01 20.01 34.33 52.94 75.8[ L02.90 134.15 6.84 N 7.34 B 72L848.51 5980025.00 47R 2.00 13.67 N 14.67 E 721855.64 5980032.04 HS 2.50 23,45 N 25.17 E 721855.84 5980042.33 H~ 2.50 36.16 N 38.81 B g21879.[3 5980055.24 HS 2.50 51.78 N 55.58 ~ 72~895.40 590007L.35 }{S 2.50 70.28 N 75.44 ~ 72L914.71 5980090.43 HS 2.50 91.63 N 98.35 B 72L936.97 5980212.45 HS 2.50 '0 0 lqK-41 (PI4) (T75-X Tgi;) 8TATIO~ XDHNTI P£CATION MEASURHD XNCI~N DEPTH ANGLR 2800,00 22.00 2900.00 24.50 3000.00 29.00 3L00.00 29.50 3200.0° 32.00 3300.00 34.50 3400.00 37.00 3500.00 39.50 3600.00 42.00 3700.00 44.50 3800,00 47.00 3900,00 49.50 4000.00 52.00 4100.00 54.50 4200.00 57.00 4300.00 59.50 4400.00 62.00 4500.00 64.50 4600.00 67.00 4700,00 69.50 RND 2.5/L00 BUILD 4775.40 71.39 4?82.54 ~':~"':~o/ 4900.00 71.56 · u~ l"?"? sooo. oo 7 ...... ,.,,~: ,~. .., .-..r ~--..,., PROPOSED WI~Lh PROFII.~ DIRECTION V~RTICAL-DRPTH,~ AZlbKITH TVD SUB-SBA 49.03 2798.47 27L8.27 , 47.03 2870.35 2810.E5 47.03 2960.41 2900.21 47.03 3048.49 2988.29 47.03 3134.42 ~074.22 47.03 47.03 47.03 47.03 47.03 3218.05 315~.85 3299.20 3239.00 3377.72 331~.52 3453.47 3393.27 3526.30 3466.10 9HCTrO~ DSPART 169.50 208.90 · 252.25 299.48 350.50 405.22 4e3.s2 525.30 590.44 658.81 47.03 47.03 4'/. 03 47.03 47.03 3596.08 3535.88 3662.66 3602.46 3725.93 3665.73 3785.75 3725.55 3842.03 378L.83 730.29 804.74 892.02 961.98 1044.46 47.03 4'7.03 47.03 47.03 47.03 3894.65 3834.45 3943.51 3883.3L 3988.51 3928.31 4029.58 3969.38 4066.63 4006.43 1129,32 12~6.38 1305.49 1396.48 3489.16 47.03 47.03 47 ,03 46.31 45.06 4091.87 4031.67 4094.14 4033.94 4103.83 4043.63 4131.29 4071.09 4162.94 4L02.74 3560.07 1566.82 1595.83 1678.07 1772.86 44.00 42.98 42-98 4194.58 4134.38 4225.18 4164,98 4440.20 %380.00 1867,70 1959,48 2604.45 19 Jun 1997 Page 2 COORD]I~ATES-FRO~ AI.d~SKA ZOne4 TOOL DL/ WEbLHEAD X Y FACE 100 1l~.7~ N 124.27 142.68 N 153.'1~ B 72~990.24 5980165.10 HS 2.50 172.29 N 184.94 B 722023,13 ~980195.64 H~ 2.50 20~.56 N 2L9.57 B 722054,99 5980228.91 ~S 2.~0 239.4~ N 256.98 ~ 722091,15 5980264.8~ ~S 2.5~ 276.78 N 297.09 ~ 722L30,13 5980303.39 HS 2.50 316.60 ~ 339.84 ~ 722L71.68 5980344.45 H~ 2.50 358.80 N 385.13 g 722215,70 6980387.97 H~ 2.50 403.2g N 432.89 H 722262.12 5980433~86 RS 2.50 449.99 N 483.02 ~ 722310.84 ~980482.02 H~ 2.50 498.81 ~ 535-42 g 722363.28 5980532-37 HS 2.50 549,66 N 590-01 H 7224L4.83 5980564-81 HS 2.50 602.45 N 646.66 H 722469.90 5980639.25 HS 2.50 657,06 N '/05.28 S 722526.87 5980695.57 NS 2.50 913,40 N q65.76 B 722585.65 5980953.67 NS 2-50 771.36 N 827.97 H 722646.12 5980613.44 RS 2.50 830.83 N 891.81 ~ 722708.16 5980874.~7 HS 2.50 892.69 N 957.14 E 72277L.66 5980937.54 RS 2.50 9~3.84 ~ L023.84 ~ 722836.50 5981001.63 ~ 2.50 10£7.14 N 109~.80 E 722902.54 5981066-92 HS 2.50 1065_57 N 1143.78 E 722953.07 59811L6.~7 1070.19 N 1148.73 ~ 722957.68 5981121.62 1090.00 N 1150.00 H 722978.55 5981142.06 1146.62 N 1229.81 g 723036.66 5981200.42 1213.0£ N 1297.57 ~ ?23102.42 5981268.78 HS 2.50 H8 2-50 911 0.00 901 1.00 901 1.00 1280.63 N 1364.L0 1347,22 N 142'/.27 1819,0~ N 1867.02 723166.91 5981338.34 90L 1.00 723228.08 5981406.76 I-IS 1.00 723653.65 5981891.]9 HS 0.00 ANADRILL AKA-DPC APPROVED FOR PERMITTING ONLY 'U I> m ~K-4m IP14) (??5-z T~U) .-s/o,, c~ .~ .l I- TOP TUFFS DROP 0.5/100 TOP HRZ MEASURIID INCLN DEPTH AI~]L~ 7678.98 71.56 7750,03 71,56 9449,70 71.56 ~$267.78 73.56 ~6058.28 71.56 k7323.08 7£.56 20010.78 ?£.56 21030.07 71.56 2£~00,00 71.21 21200.00 70.71 21300.00 70.23 23400.00 69.71 21500.00 69-21 216U0.00 68.7L 21611.09 68.66 21700.00 68.2£ 21800.00 67,71 21900.00 67,21 22000.00 66,71 22100.00 66.21 BND 0.5/100 DROP 22142,74 66.00 TA]~GST ~m~**~*~m*** 22142,99 66.00 ~X)P KUPARUK 22£42.99 66.00 TOP KINGAK 22782.22 66,00 7~ LNR PT ¢[[> 2303L.98 66.00 TD 23031.98 66.00 PROPOSHD WBLL PROPILH DIRIgCTION VSRTICAL-DEPT~S AZ£~13TH T~D SUB-S~A 42.98 5010.20 4950.00 42.98 5035.20 4975.00 42.98 5570.20 55[0.00 42.98 7410.20 7350.00 42.98 7660.20 7600.00 SECTION DHPART 4314.~4 4389.94 5994.04 L1513.37 L2263.28 42.98 8060-20 8000.00 L3463.L3 42.98 8910.20 8850.00 L60Z2,82 42.98 9232.56 9172.36 16979,77 42.98 9254.87 9194.67 17046,05 42.98 9287.49 9227.29 17L40.57 42-98 9320.93 9260.73 17234.81 42.90 9355.L9 9294.99 17328.76 42.98 9390.27 9330,07 17422.40 42.98 9426.17 9365.97 17515.73 42.98 9430.20 9370.00 ~7526.07 42.98 9462.88 9402.68 L7608.75 42.98 9500-40 9440.20 L7701.44 42.98 9538.72 9478.52 L7793.80 42.98 9577.85 9517.65 17885.83 42-98 9617.79 9557.59 17977.50 42.98 9635.L0 9574.90 18016.58 42.98 9635,20 9575.00 18016.81 42.98 9635.20 9575.00 18016.81 42.98 9895.20 9835-00 18600.76 42.98 9996.78 9936.58 18828.92 42.98 9996,78 9936.58 L8828.92 {AnadriLl (c)97 NK41PL4 3.0C 10:36 AM P) ~7 Jun 1999 Page 3 COORDINATRS-PROM ALRGKA ~one 4 TOO~ Dh/ ~BLL4fllAD X ¥ PACB 100 3069.87 N 3032.77 ~ 724701.82 5983176.12 HS 0.00 3124.73 ~ ~083.90 ~ g24831.30 5983232,46 HS 0,00 4298.75 R 4178.07 E 725690.20 5984418,30 H$ 0.80 8336.48 N ~942.2£ ~ 729532.00 6988585.50 HS 0,00 8865.09 N 8452.50 ~ 730026.8~ 5989£48.98 HS 0.00 9?62.85 N 9270.58 E 730818,51 5990050.54 HS 0,00 11698.~ N t£008.98 E 732500.86 5991966.37 HS 0,00 12335.50 N L1668.26 R 733138.88 5992692.94 I.,g 0.00 12383.98 N tt713.44 g 733182.61 5992742.74 l~g 0.50 12453.£3 N 1L777.89 E 733244.98 5992813.77 l.q 0.50 12522.0~ N 11842,15 12590.80 N 11906.20 22659.31 N 11970.05 12727,59 N 12033.68 L273S.L4 N 12040.73 733307.17 5992884.50 L~ 0.50 733369.15 5992955.17 I.~ 0.50 733430-94 5993025.53 ~ 0.50 733492.53 5993095.66 I.S 0.50 733499.34 5993103.43 I..9 0.50 12795.63 ~ 12097.10 12863.44 N 12160.30 12931.01 N 12223.27 12998.33 N 12286.02 13065.40 N 12348.52 733553,90 5993165,55 L$ 0,50 7336L5.06 5993339,20 ],S 0.50 ~33676.00 5993304.60 I~S 0,50 933736.72 5993373.75 LB 0,50 733797.2L 5993442.64 ~S 0.50 13093.99 N 12375.I7 H 733823.00 5993472.00 85 0,50 13094.15 N 12375.32 B 733823.15 5993472.17 tis 0.00 13094.15 N 12375.32 R 733923.15 5993472.17 HS O.00 13S2L.35 N 12773,49 ~ 734208.46 5993930,95 HS 0,00 13688.26 N 12929.03 E 7343~9.00 5994082.39 0.00 13688,26 N 12929.03 B 734359.00 5994082.39 0,00 ANADRILL AKA-DPC APPROVED FOR PERMITTING ONLY PLAN Z SHARED 'SERVTCES ii i i Narker Tdenl~ilication NO BKB SECfN II~LN A} KB 0 0 0 0.00 O] KOP GUILD i/~O0 i800 t800 0 O.OO C) BUILD t.5/iO0 1900 1900 i O) BUILD 2/~00 2000 2000 4 ~.50 E) BUILD 2.5/100 2~00 2100 10 4.50 F) END ;).5/)00 BUILO 4775 4092 1560 71..39 G) CURVE i/)O0 4813 4104 i596 7i.,56 H) END I/t00 C~VE 51§7 4225 1959 7L56 I) t3-3/6' CSG PT <11> 7679 50~0 43~4 7t.56 J) 9-5/8' CS$ Pr 4l> 17323 8060 13463 K) DROP 0.5/100 21030 9233 16980 L) END 0.5/100 DROP 22~43 9635 ~80~7 M) TARGET ~-xi~x~xx~xx 22143 9635 ~80t7 N) 7" L~ PT <l I> 23032 9997 16829 66.00 DRILLI'~G · i i ii mmm i! m i mm~llm m ii I ~nadrii] Schlumberger NK-41 (Pi4) [T75-~ Tgt) VERTICAL SECTION VIEW Section at: TVD Scale,: Dap Scale.: Drawn ..... : 43.38 ! inch = 2400 teet I inch = 2400 feet 17 Jun i997 O) TD 23032 9997 18829 66.00 A ' ANAD ULL ~ kKA-DP," Al: PRO'~./ED ~ ~,,,~ ~ J F,)R PERM TTII,IG '~' '""'~ ............... ON 'nTm,~ - B~ ~'' ~'~ ..... - . , -~,-~'~'~I~. ,- ' .......... ~~: .......... ' .... .~,~. ~ ...... ..__ 2~~_.. ............ i ,, I 0 ]200 2400 ~00 4800 ~O0 7200 BdO0 9~0 ]0800 ~2000 t3200 t4aO0 ]5600 16~0 teO00 lgRO0 20400 Section Depectuce ~8~lll {cl97 ~4~Pt4 ].~ t~36 AN P) ' ' ' Z I i DRILLIN6" i · SHARED SERV'[CES ,~n,~dr¢]] Schlumberger ii i · i i i NK 4J (P~4) (175-~ Tgt) VERTICAL SECTION VIE~ I I I I I III Section at: 4.t 38 r .......... ~ ..................................... T,~'ClkTELr'~'-~ IDep Scale.: ! inch: 500 feet .... I Drawn.. 17 Jun 1997 __ ~ ,. Hanker Identification ~ BKB SEC~N INCLI A) 9-5/8' CSG P1 <11> ~73~ 8060 13463 7~.51 B) D~P 0.5/~00 2~030 9233 169B0 21.5~ C) E~ 0.5/100 D~P 22~43 ~35 180t7 66.0~ _ O) IARGET Mww*~*~ 22t43 9635 ~80J7 B6.0i E) 7' LNR PI <11 > 23032 9~7 18829 ~.0~ ~~ F] ID ~3032 9~7 tea29 ~ ~~ ~ ANADRILL AKA-DPt j APPRC~VED · ........... < .......... ~-.- ~ ~ B ~.:~~ .................. -f~-~ -~ - . :~3- -.~-. _ ~[~ ................. -~ .... ..... ::}' · -- . ~4500 ~4750 ~500~ ~5250 ~0 ~5750 ~6000 ~62~ ~6~0 ~6750 ~7000 ~7250 ~7500 ~7750 ~eooo ~8250 ~8500 ~eT~ ~9800 Sec t i o~ ~par tune '13 ,05/17/1BB7 18:33 B0?-344-2160 ANADRILL DPC PAGE 07 SHARED" SERVICES DRILLING -- - - i ii i i i i "~"""" ~""'~'"'~':'°" "'~ "'/~ ~/" NK-41 (Pi4) (T75- ~ Tgi) A) KB O 0 N 0 E d ~ ~o~ ~U~LO ~/~oo ~oo o, o ~~ PLAN VIEW ~ ~u~ ~.~/~oo ~oo ~. DI BU~La ~/~o0 20OO 3 N 3 E ,, E) BUILD 2.5/~00 2t00. 7 ~ 7 E CLOSURE ' ~8829 feet at Azimuth 43.37 F) ENO 2.5/~00 eUIL9 4775 1066 N 1t~a E G) c~vE ~/~eo aec3 ~ogo N ~70 E DECLINATION.' +28.792 (E) H) END ~/$00 CURVE 5197 ~347 N 1~27 E SCALE ' ~ inch = 2800 f~et I) 13-3/8" CSG PT <11> 7679 3070 N 3033 E J) 9-5/8' CSG PT <11> 17323 9763 N 927~ E DRAWN ' ' 17 Jun 1997 K) DROP 0.5/t00 25030 t2335 N ~1668 E LI END 0.5/~00 DROP 22~83 13094 N 12375 E MI TARGET ~mm~mm~mm~ 22~43 13094 N 12375 E NJ 7' LNR PT 41> 23032 13688 N ~2929 E ~nadrl]] o] T~ 23032 ~. ~ ~ ......... t5600 .... "-' = ~"~ t4400 I ANAERiLL A~-UI'~ ~'. A 'PROVED ,~oo ~OK i'ERN iTTiNG ~ /. , 10800 .... ~ _ g600 m 8~00' · ' ' ' 720~ -. ~ " 6000 ' ' / ...... 4800 .. / , ·. ' / 3600 , ~ 2400 , / t200 ~ .... 1~o0 ........ t200 0 t200 2400 3600 4800 6000 7200 8400 9600 10800 12000 13200 14400 15500 <- WEST · EAST -> mm m m (knadrill (c}97 NK4$Pt4 3.0C i0:27 ~ P) WELL PERMIT CHECKLISToo. ,,NY ~~ ~ELL NA~E INIT CLASS GEOL AREA _6%PROGRAM :/ex~dev~ UN IT# [] redrlD,~/, ~ ,servn wellbore seg~ ann dtsp para reqn ON/OFF SHORE ~,Q~j ADMINISTRATION 1 2 3 4 5 6 7 8 9 10 11 12 13 RE~ P~S Lease number appropriate ............... Unique well name and number ..... . . .' ...... ~_~ Well located in a de f lned pool .............. Y (_N~ Sufficient acreage available in drilling unit ..... I f deviated, is we 1 lb ore plat included ........ ~ N Operator only affected party .............. ~_ N Operator has appropriate bond in force ......... ~ N Permit can be issued without conservation order .... ~ N Permit can be issued without administrative approval. ..~y.Y N Can permit be approved before 15-day wait ....... N ENGINEERING 14. Conductor string provided ............... O N 15. Surface casing protects all known USDWs ........ ~ N 16. CMT vol adequate to circulate on conductor & surf csg. .~ N 17. CMT vol adequate to tie-in long string to surf csg . . . ~ ~ 18. CMT will cover all known productive horizons ...... ~ N 19. Casing designs adequate for C, T, B & permafrost .... ~ N 20. Adequate tankage or reserve pit ............. ~/ N 21. If a re-drill, has a 10-403 for abndnmnt been approved..~--~~ 22. Adequate wellbore separation proposed .......... ~ N 23. If diverter required, is it adequate .......... O N ~.~ 24. Drilling fluid program schematic & equip list adequate ~ N 25. BOPEs adequate ............ ~ ....... ~Y N 26. BOPE press rating adequate; test to 5~ psig.~~ N 27. Choke manifold complies w/API RP-53 (May 84) ...... ~ N 28. Work will occur without operation shutdown ....... ~ N 29. Is presence of H2S gas probable ............. Y~ GEOLOGY 30. Permit can be issued w/o hydrogen sulfide measures. . . .~ N 31. Data presented on potential overpressure zones ..... ~'~3 N 32. Seismic analysis of shallow gas zones ....... /~.~.~' N 33. Seabed condition survey (if off-shore) ..... ~.~ Y N 34. Contact name/phone for weekly progress reports ..... Y N [exploratory only] GEOLOGY: ENGINEERING: COMMI SS ION: Comments/Instructions: HOW/dlf- A'\FORMS\chekhst rev 01197 Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file .under APPENDIX. No special effort has been made to chronologically organize this category of information. * ALASKA COMPUTING CENTER * ....... SCHLUMBERGER ....... COMPANY NAME : BP EXPLORATION WELL NAME : NK-41 FIELD NAME : NIAKUK BOROUGH : NORTH SLOPE STATE : ALASKA API NUMBER : 50-029-22778-00 REFERENCE NO : 97549 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: **** REEL HEADER **** SERVICE NAME : EDIT DATE : 98/04/ 2 ORIGIN : FLIC REEL NAME : 97549 CONTINUATION # : PREVIOUS REEL : CO~4MENT · B.P. EXPLORATION, NIAKUK NK-41, API #50-029-22778-00 **** TAPE HEADER **** SERVICE NAME : EDIT DATE : 98/04/ 2 ORIGIN : FLIC TAPE NAME : 97549 CONTINUATION # : 1 PREVIOUS TAPE : COM~F~YT : B.P. EXPLORATION, NIAKUK NK-41, API #50-029-22778-00 TAPE HEADER NIAKUK MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR '. LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB ~ER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL : FSL : FEL : ELEVATION (FT FROM MSL O) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: BIT RUN 1 ......... 97549 BOSSE PEAK WELL CASING RECORD 1ST STRING 2ND STRING NK-41 500292277800 BP EXPLORATION SCHLUMBERGER WELL SERVICES 2-APR-98 BIT RUN 2 BIT RUN 3 36 12N 1SE 1474 717 60.05 60.05 19.30 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 8.500 9.625 17661.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 3RD STRING PRODUCTION STRING REMARKS: Well drilled 30-JUN through lO-SEP-97 with MWD GR, CDR, and CDR/ADN, in 5 bit runs. $ $ PA GE: **** FILE HEADER **** FILE NAME : EDIT .001 SERVICE : FLIC VERSION . O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curVes; all bit runs merged. DEPTH INCREMENT: 0.5000 FILE SUMMARY LDWG TOOL CODE .............. $ BASELINE CURVE FOR SHIFTS: GRCH CURVE SHIFT DATA (MEASURED DEPTH) START DEPTH STOP DEPTH 200.0 23746.5 BASELINE DEPTH .............. 88888.0 16945.0 16944.0 16940.5 16936.0 16927 5 16925 5 16913 5 16910 5 16897 0 16890 5 16872 0 16869 0 16861 0 16855 0 16843 0 16840.0 16837.5 16830.0 .......... EQUIVALENT UNSHIFTED DEPTH .......... ....... 88893.0 16950.0 16948.5 16944.5 16940.0 16932.5 16931.0 16919.0 16915.5 16902.0 16895.0 16876.0 16872.5 16864.0 16857.5 16845.5 16842.5 16839.5 16832.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 16827 0 16824 0 16822 0 16801 0 16799 0 16792 5 16786.0 16784 0 16775 0 16771 0 16764 5 16759 0 16752 5 16726.5 16724 5 16708 0 16706 5 16700 5 16697 0 16693 5 16691 5 16687 5 16682 5 16673 5 16668 0 16661 0 16653 5 16646 0 16640 0 16636 0 16607 5 16606 0 16587 0 16574 0 16563 0 16554 0 16544.5 16536.5 16532.0 16530.5 16526.5 16521.0 16514.0 16505.0 16499.5 16491.5 16488.0 16482.5 16479.0 16471.5 16467.0 16464.0 16461.5 16458.0 16449.5 16829.5 16827.0 16825.5 16804.5 16802.0 16795.0 16787.5 16786.0 16778.0 16774.5 16767.5 16761.5 16754.5 16728.5 16727.0 16710.5 16708.5 16703.0 16699.0 16695.0 16692.5 16688.0 16682.5 16673.0 16667.0 16659.5 16651.5 16643.5 16637.0 16632.5 16604.0 16602.0 16583.0 16570.5 16560.0 16550.0 16541.0 16533.5 16529.5 16528.5 16525.0 16520.0 16513.5 16505.0 16500.0 16492.5 16488.0 16482.0 16478.0 16470.5 16465.0 16461.5 16458.5 16454.5 16445.5 2-APR-1998 17:10 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 16442.5 16438.5 16438.0 16435.0 16429.5 16426.5 16424.0 16421.5 16411.5 16409.0 16409.0 16407.0 16405.5 16403.5 16404.5 16403.0 16401.5 16400.0 16398.0 16397.0 16387.5 16386.5 16386.5 16385.0 16372.0 16370.5 16369.5 16367.5 16360.5 16358.5 16358.0 16355.5 16354.0 16351.0 16345.0 16341.5 16338.5 16335.5 16331.0 16328.0 16329.0 16326.5 16321.5 16318.5 16314.0 16310.5 16308.5 16304.5 16303.5 16300.0 16300.0 16297.5 16285.5 16283.0 16278.5 16276.5 16272.0 16270.0 16269.5 16267.0 16184.5 16182.0 16182.5 16179.5 16172.5 16169.5 16168.5 16166.5 16162.5 16162.0 16159.5 16159.5 16153.0 16153.5 16148.0 16149.0 16137.0 16138.5 16135.5 16136.5 16129.5 16130.0 16125.0 16126.0 16123.5 16124.0 16118.0 16116.0 16114.0 16111.5 16109.5 16106.5 16100.0 16097.0 16098.0 16094.5 16075.0 16071.5 16072.5 16068.5 16051.5 16047.5 16048.0 16043.5 16041.0 16036.5 16036.0 16031.0 16033.0 16028.0 2-APR-1998 17:10 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 16030.5 16023.5 16022.0 16016.0 16015 5 16013 0 16001 5 15992 5 15991 0 15984 5 15982 5 15977.0 15974.0 15971.5 15968.5 15967.5 15965.5 15963.5 15961.0 15955.0 15953.0 15943.0 15935.0 15930.0 15916.0 15909.0 15903.0 15888.0 15883.0 15878.5 15874.5 15870.5 15858.0 15849.5 15846.0 15842.0 15836.0 15830.0 15818.0 15811.5 15808.5 15805.0 15799.5 15793.0 15790.0 15785.0 15779.0 15772.5 15769.0 15766.0 15757.5 15750.5 15739.0 15729.0 15724.0 16025.0 16019.0 16017.5 16011.0 16010.0 16007 0 15995 0 15986 0 15984 0 15977 5 15975 0 15969 0 15965 5 15963 0 15961 0 15960 0 15958 5 15957 5 15955 5 15949 5 15948 0 15938 5 15930 5 15926.0 15911 5 15904 5 15898 0 15882 5 15877 5 15874 5 15870 5 15867 0 15854 5 15846.5 15843 0 15840 0 15834 5 15829 0 15818 0 15811 5 15809 0 15805 0 15799 0 15791 5 15788 0 15784 5 15780 5 15774 5 15769 5 15766.0 15756.0 15749.0 15738.5 15729.0 15723.0 2-APR-1998 17:10 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 15718.0 15717 15701.5 15701 15688.5 15688 15681.5 15680 15676.0 15674 15642.5 15641 15633.5 15632 15630.0 15629 15626.0 15625 15618.5 15619 15612.5 15613 15610.0 15610 15607.5 15607 15597.5 15595 15593.5 15590 15589.5 15585 15587.0 15583 15583.5 15580 15583.0 15579 15577.0 15573 15575.0 15570 15573.0 15568 15571.0 15566 15568.0 15562 15566.0 15560 15563.5 15557 15562.5 15556. 15558.0 15551 15556.0 15548 15554.0 15546 15545.5 15538 15538.5 15530 15522.5 15514 15511.0 15502 15502.0 15493 15497.0 15488 15476.0 15467 15462.0 15452 15450.0 15440 15418.5 15408 15413.0 15403 15387.0 15377 15382.0 15373 15376.0 15367 15371.0 15361 15365.5 15356 15361.5 15352 15359.0 15350 15354.5 15344 15353.0 15342 15342.5 15332 15338.0 15328 15335.0 15325 15323.5 15314 15318.5 15309 2-APR-1998 17:10 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 15310.5 15302.0 15300.0 15294.0 15284.5 15245.5 15233.5 15201.0 15196.5 15189.0 15185.0 15174.5 15170.0 15168.5 15161.0 15157.5 15151 5 15148 0 15130 5 15125 5 15119 5 15115 5 15108 5 15100 5 15091 0 15059 5 15052 0 15046.0 15039 0 15031 5 15029 5 15024 5 15012 0 15000 0 14984 0 14980 0 14961 5 14958 5 14939 0 14934 5 14928 5 14924 0 14917 5 14912 5 14909 5 14904 5 14902 5 14898 5 14893 5 14890.0 14888.0 14883.5 14876.0 14871.5 14850.0 15302 0 15293 5 15291 0 15284 5 15274 5 15235 5 15223 0 15190 5 15186 5 15179 0 15174 5 15164 0 15159 0 15157 0 15148 5 15145 0 15139 5 15136 5 15119 0 15114 5 15108 5 15104 5 15097 0 15090 0 15081 5 15050 0 15043 5 15038 0 15030 5 15023.0 15020.5 15015.0 15001.5 14989.0 14973.0 14968.5 14950.0 14946.5 14927.0 14923.5 14917.5 14912.5 14906.0 14900.0 14896.5 14892.0 14889.5 14883.5 14880.0 14877.0 14875.5 14871.5 14865.0 14860.0 14838.5 2-APR-1998 17:10 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 14839.5 14820. $ 14808.0 14790.0 14738.0 14732.0 14715.0 14708.0 14699.5 7055.0 100.0 $ MERGED DATA SOURCE LDWG TOOL CODE .............. $ REMARKS: 14827.5 14808.5 14795.5 14777.0 14725.0 14719.5 14702.5 14695.5 14687.5 7055.0 100.0 BIT RUN NO. MERGE TOP MERGE BASE 1 200.0 15613.0 2 15435.0 17670.0 3 17614.0 21734.0 4 17614.0 22910.0 5 22774.0 23746.5 The depth adjustments shown above reflect the MWD GR to the USIT GRCH logged by SWS. Ail other MWD curves were carried with the GR. This file also contains the Very Enhanced QRO resisitivity with 2' average that was reprocessed at GeoQuest. The ADN quadrant outputs are as follows: ROBB/ROBU/ROBL/ROBR are bottom, upper, left, and right quadrant density; and are also listed as RHO1, RH02, RH03, RH04 in the LDWG listing. The other outputs (Delta Rho, PEF) are listed with their quadrants as DRHB/DRHU/DRHL/DRHR, PEB/PEU/PEL/PER, and the LDWG outputs of CALA and CALS are HDIA and VDIA respectively. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE- 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 76 4 66 1 $ 66 6 73 7 65 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: TYPE REPR CODE VALUE 8 68 0.5 9 65 FT 11 66 13 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 0 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 FET MWD HR 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RA MWD 0Pff~I4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RP MWD OH~ff~4000082 O0 000 O0 0 1 1 1 4 68 0000000000 VRA MWD OH~IM4000082 O0 000 O0 0 1 1 1 4 68 0000000000 VRP MWD OIff~f4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DER MWD OPff4M4000082 O0 000 O0 0 1 1 1 4 68 0000000000 ROP MWD FPHR 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 GR MWD GAPI 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RHO1 IVIWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH02 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH03 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH04 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DRHOMWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 PEF MWD BN/E 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DCALMWD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 CALSf4WD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 CALAMWD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 NPHIMWD PU-S 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 ** DATA ** DEPT. 23746.500 FET.MWD -999.250 RA.MWD -999.250 RP.MWD VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD -999.250 ROP.MWD GR.MWD -999.250 RHO1.MWD -999.250 RHO2.MWD -999.250 RHO3.MWD RHO4.MWD -999.250 DRHO.MWD -999.250 PEF. MWD -999.250 DCAL.MWD CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 DEPT. 200.000 FET.MWD -999.250 RA.MWD -999.250 RP.MWD VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD -999.250 ROP.MWD GR.MWD 17.780 RHO1.MWD -999.250 RHO2.MWD -999.250 RHO3.MWD RHO4.MWD -999.250 DRHO.MWD -999.250 PEF.MWD -999.250 DCAL.MWD CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 -999.250 31.250 -999.250 -999.250 -999.250 329.180 -999.250 -999.250 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 10 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .001 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 .MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NT24BER 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: 0. 5000 FILE SU~R4ARY VENDOR TOOL CODE START DEPTH STOP DEPTH 200.0 15613.0 LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: lO-SEP-97 FAST 4.0C REAL - TIME 23742.0 200.0 23742.0 75 0.1 74.3 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 11 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE GR GAMMA RAY $ TOOL NUMBER ........... MWD GR BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) '. 8.500 17661.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OH~) AT TEMPERATURE (DEGF) : MUD AT ~fEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): OBM 10.50 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) TOOL STANDOFF (IN) EWR FREQUENCY (HZ) REMARKS: ORIGINAL HOLE (NK-41 PB1) TO 17661' WELL SIDETRACKED BELOW 9 5/8" SHOE MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 21734' (RUN 2, 3) CDR/ADN DATA 21000' - TD (RUN 4,5) GR AND TNPH ENVIR. CORRECTED ***THIS IS THE MWD GR DATA (RUN 1)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE .............................. 1 66 0 2 66 0 3 73 12 4 66 1 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 12 TYPE REPR CODE VALUE 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 85 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 ROPE MW1 F/HR 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 GR MW1 GAPI 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 ** DATA ** DEPT. 15613.000 ROPE.MW1 6.260 GR.MW1 107.861 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 13 **** FILE HEADER **** FILE NAM~E : EDIT .003 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE ~ER 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN ~ER: 2 DEPTH INCREMENT: 0.5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH 15435.0 17670.0 LOG HEADER DATA DATE LOGGED .. SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or RE~LL-TIME) : TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : lO-SEP-97 FAST 4. OC MEMORY 23742.0 200.0 23742.0 51 71.9 72.3 TOOL NUMBER CDR 7027 8.500 17661.0 OBM 10.50 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 14 FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE MUD FILTRATE AT (MT): MUD CAKE AT (MT): NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE (NK-41 PB1) TO 17661' WELL SIDETRACKED BELOW 9 5/8" SHOE MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 21734' (RUN 2,3) CDR/ADN DATA 21000' - TD (RUN 4,5) GR AND TNPH ENVIR. CORRECTED ***THIS IS THE CDR DATA (RUN 2)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 36 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 28 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17~10 PAGE: 15 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 ATR LW1 Otfi~M4000082 O0 000 O0 0 3 1 1 4 68 0000000000 PSR LW1 OH~4M 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 ATVR LW1 OP~4M 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 PSVR LW1 OHFIM 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 DER LW1 Otfl~M4000082 O0 000 O0 0 3 1 1 4 68 0000000000 ROPE LWl F/HR 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 GR LW1 GAPI 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 TABR LW1 4000082 O0 000 O0 0 3 1 1 4 68 0000000000 ** DATA ** DEPT. 17670. 000 ATR. LW1 -999. 250 PSR. LW1 -999. 250 ATVR. LW1 -999. 250 PSVR.LW1 -999.250 DER.LW1 -999.250 ROPE.LW1 120.806 GR.LW1 -999.250 TABR. LW1 -999. 250 DEPT. 15435. 000 ATR. LW1 -999. 250 PSR . LW1 PSVR. LW1 -999. 250 DER. LW1 - 999. 250 ROPE. LW1 TABR. LW1 - 999.250 -999. 250 ATVR. LW1 -999. 250 -999. 250 GR. LW1 -999. 250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .003 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .004 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 16 FILE AUgM~ER 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: 0.5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH MWD 17614.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH .......... 21734.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE ......................... CDR RESIST./GR $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (Oh?~4) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE MUD FILTRATE AT (MT): MUD CAKE AT (MT): NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): lO-SEP-97 FAST 4.0C MEMORY 23742.0 200.0 23742.0 100 70.9 85.8 TOOL NUMBER CDR 7027 8.500 17661.0 OBM 10.50 TOOL STANDOFF (IN): LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 17 EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE (NK-41 PB1) TO 17661' WELL SIDETRACKED BELOW 9 5/8" SHOE MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613 ' - 21734 ' (RUN 2, 3) CDR/ADN DATA 21000' - TD (RUN 4,5) GR AND TNPH ENVIR. CORRECTED ***THIS IS THE CDR DATA (RUN 3)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** * * SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 32 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 32 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 ATR LW2 OH~ff44000082 O0 000 O0 0 4 1 1 4 68 0000000000 PSR LW2 0H~4000082 O0 000 O0 0 4 1 1 4 68 0000000000 ATVR LW2 0H~I4000082 O0 000 O0 0 4 1 1 4 68 0000000000 PSVR LW2 OH~M 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 ROPE LW2 F/HR 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 GR LW2 GAPI 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 TABR LW2 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 18 ** DATA ** DEPT. 21734.000 ATR.LW2 -999.250 PSR.LW2 -999.250 ATVR.LW2 PSVR.LW2 -999.250 ROPE.LW2 89.590 GR.LW2 90.103 TABR.LW2 DEPT. 17614.000 ATR.LW2 -999.250 PSR.LW2 -999.250 ATVR.LW2 PSVR.LW2 -999.250 ROPE.LW2 -999.250 GR.LW2 105.413 TABR.LW2 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .004 SERVICE · FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .005 SERVICE : FLIC VERSION · O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: 0.5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH MWD 17614.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : STOP DEPTH 22910.0 lO-SEP-97 FAST 4. OC MEMORY 23742.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 19 TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR ADN AZ. DENS./NEUT. $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) .. DRILLERS CASING DEPTH (FT) : 200.0 23742.0 90 36.0 85.6 TOOL NUMBER CDR 7027 ADN 059 8.500 17661.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): OBM 10.50 NEUTRON TOOL MATRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN): TOOL STANDOFF (IN): 1.0 EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE (NK-41 PB1) TO 17661' WELL SIDETRACKED BELOW 9 5/8" SHOE MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 21734' (RUN 2,3) CDR/ADN DATA 21000' - TD (RUN 4,5) GR AND TNPH ENVIR. CORRECTED ***THIS IS THE CDR/ADN DATA (RUN 4)*** $ LIS FORMAT DATA LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 2O ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE- 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 112 4 66 1 5 66 6 73 7 65 8 68 O. 5 9 65 FT 11 66 9 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUmB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ATR LW3 OH~ff44000082 O0 000 O0 0 5 1 1 4 68 0000000000 PSR LW3 OHT4M4000082 O0 000 O0 0 $ 1 1 4 68 0000000000 ATVR LW3 OH~ff44000082 O0 000 O0 0 5 1 1 4 68 0000000000 PSVR LW3 OH~4 4000082 O0 000 O0 0 $ 1 1 4 68 0000000000 ROPE LW3 F/HR 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 GR LW3 GAPI 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 TABR LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 TABD LW3 4000082 O0 000 O0 0 $ 1 1 4 68 0000000000 ROBB LW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ROBU LW3 G/C3 4000082 O0 000 O0 0 $ 1 1 4 68 0000000000 ROBL LW3 G/C3 4000082 O0 000 O0 0 $ 1 1 4 68 0000000000 ROBR LW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DRHB LW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DRHULW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DRHL LW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DRHR LW3 G/C3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PEB LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PEU LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PEL LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PER LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 CALNLW3 IN 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 TNPH LW3 PU 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 TNRA LW3 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DCALLW3 IN 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 HDIA LW3 IN 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 21 NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELE~I CODE (HEX) VDIA LW3 IN 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 RPM LW3 RPM 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ** DATA ** DEPT. 22910. 000 ATR.LW3 -999.250 PSR.LW3 -999.250 ATVR.LW3 PSVR.LW3 -999.250 ROPE.LW3 -999.250 GR.LW3 -999.250 TABR.LW3 TABD.LW3 -999.250 ROBB.LW3 -999.250 ROBU.LW3 -999.250 ROBL.LW3 ROBR. LW3 -999. 250 DRHB. LW3 -999. 250 DRHU. LW3 - 999. 250 DRHL. LW3 DRHR.LW3 -999.250 PEB.LW3 -999.250 PEU. LW3 -999.250 PEL.LW3 PER.LW3 -999.250 CALN. LW3 -999.250 TNPH.LW3 -999.250 TNRA.LW3 DCAL.LW3 -999.250 HDIA.LW3 -999.250 VDIA.LW3 -999.250 RPM. LW3 -999.250 -999.250 -999.250 -999.250 -999,250 -999.250 -999.250 END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .005 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAXREC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE H~ER **** FILE NA~E : EDIT .006 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER 6 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 5 DEPTH INCRE~IENT: 0.5000 FILE SU~R~RY VENDOR TOOL CODE START DEPTH STOP DEPTH LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE 22 MWD 22775.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION.. DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: 23742.0 lO-SEP-97 FAST 4. OC MEMORY 23742.0 200.0 23742.0 90 36.0 85.6 TOOL STRING (TOP TO BOTTOM) VFalrDORTOOL CODE TOOL TYPE CDR RESIST./GR ADN AZ. DENS./NEUT. $ TOOL NUMBER CDR 7027 ADN 059 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : 8.500 17661.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OH~fi~) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): OBM 10.50 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): SANDSTONE 2.65 TOOL STANDOFF (IN): EWR FREQUENCY (HZ): 1.0 20000 REMARKS: ORIGINAL HOLE (NK-41 PB1) TO 17661' WELL SIDETRACKED BELOW 9 5/8" SHOE MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 21734' (RUN 2,3) CDR/ADN DATA 21000' - TD (RUN 4,5) LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 23 GR AND TNPH ENVIR. CORRECTED ***THIS IS THE CDR/ADN DATA (RUN 5)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** * * SET TYPE - 64EB * * TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 112 4 66 1 5 66 6 73 7 65 8 68 O. $ 9 65 FT 11 66 9 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELE~ CODE (HEX) DEPT FT 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ATR LW4 0Pi~t4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PSR LW4 OH~IM4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ATVR LW4 0H~I44000082 O0 000 O0 0 6 1 1 4 68 0000000000 PSVR LW4 0H~I~4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROPE LW4 F/HR 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 GR LW4 GAPI 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TABR LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TABD LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBB LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBU LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBL LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBR LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHB LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHU LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRILL LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHR LW4 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 24 NAME SERVUNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) PEB LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PEU LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PEL LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PER LW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 CALNLW4 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TNPH LW4 PU 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TNRALW4 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DCAL LW4 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 HDIA LW4 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 VDIA LW4 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 RPM LW4 RPM 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ** DATA ** DEPT. 23741.500 ATR.LW4 -999.250 PSR.LW4 -999.250 ATVR.LW4 PSVR. LW4 -999. 250 ROPE. LW4 31 . 250 GR. LW4 - 999. 250 TABR. LW4 TABD. LW4 -999. 250 ROBB. LW4 -999. 250 ROBU. LW4 -999. 250 ROBL. LW4 ROBR. LW4 -999. 250 DRHB. LW4 -999. 250 DRHU. LW4 -999. 250 DRHL. LW4 DRHR.LW4 -999.250 PEB.LW4 -999.250 PEU. LW4 -999.250 PEL.LW4 PER.LW4 -999.250 CALN. LW4 -999.250 TNPH.LW4 -999.250 TNRA.LW4 DCAL.LW4 -999.250 HDIA.LW4 -999.250 VDIA.LW4 -999.250 RPM.LW4 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAIVE : EDIT .006 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 2 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** TAPE TRAILER **** SERVICE NAME : EDIT DATE : 98/04/ 2 ORIGIN : FLIC TAPE NAME : 97549 CONTINUATION # : 1 PREVIOUS TAPE : CO~4ENT : B.P. EXPLORATION, NIAKUK NK-41, API #50-029-22778-00 LIS Tape Verification Listing Schlumberger Alaska Computing Center 2-APR-1998 17:10 PAGE: 25 **** REEL TRAILER **** SERVICE NAME : EDIT DATE : 98/04/ 2 ORIGIN : FLIC REEL NA~E : 97549 CONTINUATION # PREVIOUS REEL : COf~4ENT : B.P. EXPLORATION, NIAKUK NK-41, API #50-029-22778-00 * ALASKA COMPUTING CENTER * . * ****************************** . ............................ * * ....... SCHLUMBERGER ....... * . ............................ * ****************************** COMPANY NAME : BP EXPLORATION WELL NAME : NK-41PB1 FIELD NAME : NIAKUK BOROUGH : NORTH SLOPE STATE : ALASKA API NUMBER : 50-029-22778-70 REFERENCE NO : 98136 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: **** REEL HEADER **** SERVICE NAME : EDIT DATE : 98/04/ 6 ORIGIN : FLIC REEL NAME : 98136 CONTINUATION # : PREVIOUS REEL : COGENT : B.P. EXPLORATION, NIAKUK NK-41PB1, API #50-029-22778-70 **** TAPE HEADER **** SERVICE NAME : EDIT DATE · 98/04/ 6 ORIGIN : FLIC TAPE NAME : 98136 CONTINUATION # : 1 PREVIOUS TAPE : CO~fENT : B.P. EXPLORATION, NIAKUK NK-41PB1, API #50-029-22778-70 TAPE HEADER NIAKUK MWD/MAD LOGS WELL NAME: API ~ER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION BIT RUN 1 98136 ST. AMOUR PEAK SECTION: TOWNSHIP: RANGE: FNL : FSL : FEL: FWL: ELEVATION(FT FROM MSL O) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2NDSTRING NK-41PB1 500292277870 BP EXPLORATION SCHLUMBERGER WELL SERVICES 6-APR-98 BIT RUN 2 BIT RUN 3 .................. 36 12N 1SE 1474 717 60.05 60.05 19.30 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 8. 500 9. 625 17661.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 3RD STRING PRODUCTION STRING REMJ~KS: Well drilled 30-JUN through 29-JUL-97 with MWD GR, CDR and ADN. Data was collected in 4 runs plus MAD pass. $ $ PAGE: **** FILE HEADER **** FILE NAME : EDIT .001 SERVICE · FLIC VERSION · O01CO1 DATE : 98/04/ 6 M3LY REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUM~ER: 1 EDITED MERGED I4WD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: 0.5000 FILE SUMMARY LDWG TOOL CODE $ BASELINE CURVE FOR SHIFTS: GR CURVE SHIFT DATA (M~ASUREDDEPTH) START DEPTH STOP DEPTH 200.0 20618.0 .......... EQUIVALENT UNSHIFTED DEPTH .......... BASELINE DEPTH MW]3 88888.0 88893.0 16945.0 16950.0 16944.0 16948.5 16940.5 16944.5 16936.0 16940.0 16927.5 16932.5 16925.5 16931.0 16913.5 16919.0 1691 O. 5 16915.5 16897.0 16902.0 16890.5 16895.0 16872.0 16876.0 16869.0 16872.5 16861 . 0 16864.0 16855.0 16857.5 16843 · 0 16845.5 16840.0 16842.5 16837.5 16839.5 1683 O. 0 16832.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 16827.0 16824.0 16822.0 16801.0 16799.0 16792.5 16786.0 16784.0 16775.0 16771.0 16764.5 16759.0 16752.5 16726.5 16724.5 16708.0 16706.5 16700.5 16697.0 16693 5 16691 5 16687 5 16682 5 16673 5 16668 0 16661 0 16653 5 16646.0 16640.0 16636.0 16607.5 16606.0 16587.0 16574.0 16563.0 16554.0 16544.5 16536.5 16532.0 16530.5 16526.5 16521.0 16514.0 16505.0 16499.5 16491.5 16488.0 16482.5 16479.0 16471.5 16467.0 16464.0 16461.5 16458.0 16449.5 16829.5 16827.0 16825.5 16804.5 16802.0 16795 0 16787 5 16786 0 16778 0 16774 5 16767 5 16761 5 16754 5 16728 5 16727 0 16710 5 16708 5 16703.0 16699.0 16695.0 16692.5 16688.0 16682.5 16673.0 16667.0 16659.5 16651.5 16643.5 16637.0 16632.5 16604.0 16602.0 16583.0 16570.5 16560.0 16550.0 16541.0 16533.5 16529.5 16528.5 16525.0 16520.0 16513.5 16505.0 16500.0 16492.5 16488.0 16482.0 16478.0 16470.5 16465.0 16461.5 16458.5 16454.5 16445.5 6-APR-1998 15:07 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 16442.5 16438.0 16429.5 16424 0 16411 5 16409 0 16405 5 16404 5 16401 5 16398.0 16387.5 16386.5 16372.0 16369.5 16360.5 16358.0 16354.0 16345.0 16338.5 16331.0 16329.0 16321.5 16314.0 16308.5 16303.5 16300.0 16285.5 16278.5 16272.0 16269.5 16184.5 16182.5 16172.5 16168.5 16162.5 16159.5 16153.0 16148.0 16137 0 16135 5 16129 5 16125 0 16123 5 16118 0 16114 0 16109 5 16100 0 16098 0 16075 0 16072 5 16051 5 16048 0 16041 0 16036.0 16033.0 16438.5 16435.0 16426.5 16421.5 16409.0 16407.0 16403.5 16403 0 16400 0 16397 0 16386 5 16385 0 16370 5 16367 5 16358 5 16355.5 16351.0 16341.5 16335.5 16328.0 16326.5 16318.5 16310.5 16304.5 16300.0 16297.5 16283.0 16276.5 16270.0 16267.0 16182.0 16179.5 16169.5 16166.5 16162.0 16159.5 16153.5 16149.0 16138.5 16136.5 16130.0 16126.0 16124.0 16116.0 16111.5 16106.5 16097.0 16094.5 16071.5 16068.5 16047.5 16043.5 16036.5 16031.0 16028.0 6-APR-1998 15: 07 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 16030 5 16023 5 16022 0 16016 0 16015 5 16013 0 16001 5 15992 5 15991 0 15984 5 15982 5 15977 0 15974 0 15971 5 15968 5 15967 5 15965 5 15963 5 15961 0 15955.0 15953.0 15943.0 15935.0 15930.0 15916.0 15909.0 15903.0 15888.0 15883.0 15878.5 15874.5 15870.5 15858.0 15849.5 15846.0 15842.0 15836.0 15830.0 15818.0 15811.5 15808.5 15805.0 15799.5 15793.0 15790.0 15785.0 15779.0 15772.5 15769.0 15766.0 15757.5 15750.5 15739.0 15729.0 15724.0 16025.0 16019.0 16017.5 16011.0 16010.0 16007.0 15995.0 15986.0 15984.0 15977.5 15975.0 15969.0 15965.5 15963.0 15961.0 15960.0 15958.5 15957.5 15955.5 15949.5 15948.0 15938.5 1593 O. 5 15926.0 15911.5 15904.5 15898.0 15882.5 15877.5 15874.5 15870.5 15867.0 15854.5 15846.5 15843.0 15840.0 15834.5 15829.0 15818.0 15811.5 15809.0 15805.0 15799.0 15791.5 15788.0 15784.5 15780.5 15774.5 15769.5 15766.0 15756.0 15749.0 15738.5 15729.0 15723.0 6-APR-1998 15:07 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 15718.0 15701.5 15688.5 15681.5 15676.0 15642.5 15633.5 15630.0 15626.0 15618.5 15612.5 15610.0 15607.5 15597.5 15593.5 15589.5 15587.0 15583.5 15583.0 15577.0 15575.0 15573.0 15571.0 15568.0 15566.0 15563.5 15562.5 15558.0 15556.0 15554.0 15545.5 15538.5 15522.5 15511.0 15502.0 15497.0 15476.0 15462.0 15450.0 15418.5 15413.0 15387.0 15382.0 15376.0 15371.0 15365.5 15361.5 15359.0 15354.5 15353.0 15342.5 15338.0 15335.0 15323.5 15318.5 15717.5 15701.5 15688.0 15680.5 15674.5 15641.0 15632.5 15629.0 15625.5 15619.0 15613.5 15610. 5 15607.5 15595.0 15590.0 15585.0 15583.5 15580.0 15579.0 15573.0 15570.5 15568.5 15566.0 15562.5 15560.0 15557.5 15556.0 15551 0 15548 5 15546 5 15538 0 15530 5 15514 5 15502 5 15493 5 15488 0 15467 0 15452 5 15440 0 15408 5 15403 5 15377 5 15373 0 15367 5 15361 5 15356.0 15352 5 15350 5 15344 5 15342 5 15332 5 15328 0 15325 5 15314 0 15309 5 6-APR-1998 15:07 PA GE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 1531 O. 5 15302.0 15300.0 15294.0 15284.5 15245.5 15233.5 15201.0 15196.5 15189.0 15185.0 15174.5 15170.0 15168.5 15161.0 15157.5 15151.5 15148.0 15130.5 15125.5 15119.5 15115.5 15108.5 15100 5 15091 0 15059 5 15052 0 15046 0 15039 0 15031 5 15029 5 15024 5 15012 0 15OOO 0 14984 0 14980 0 14961 5 14958 5 14939 0 14934 5 14928 5 14924 0 14917.5 14912.5 14909.5 14904.5 14902.5 14898.5 14893.5 14890.0 14888.0 14883.5 14876.0 14871.5 14850.0 15302 0 15293 5 15291 0 15284 5 15274 5 15235 5 15223 0 15190 5 15186.5 15179.0 15174.5 15164.0 15159.0 15157.0 15148.5 15145.0 15139.5 15136.5 15119.0 15114.5 15108.5 15104.5 15097.0 15090.0 15081.5 15050.0 15043.5 15038.0 15030.5 15023.0 15020.5 15015.0 15001.5 14989.0 14973.0 14968.5 14950.0 14946.5 14927.0 14923.5 14917.5 14912.5 14906.0 14900.0 14896.5 14892.0 14889.5 14883.5 14880.0 14877.0 14875.5 14871.5 14865.0 14860.0 14838.5 6-APR-1998 15:07 PAGE: LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 14839.5 14827.5 14820.5 14808.5 14808.0 14795.5 14790.0 14777.0 14738.0 14725.0 14732.0 14719.5 14715.0 14702.5 14708.0 14695.5 14699.5 14687.5 7055.0 7055.0 100.0 100.0 $ MERGED DATA SOURCE LDWG TOOL CODE $ REMARKS: BIT RUN NO. MERGE TOP MERGE BASE 1 200.0 15613.0 2 15426.0 17670.0 3 17546.0 19477.0 4 19344.0 20613.0 The depth adjustments shown above reflect the MWD GR to the USI GRCH logged by SWS. Ail other MWD curves were carried with the GR. This file also contains the Very Enhanced QRO resisitivity with 2' average that was reprocessed at GeoQuest. The ADN quadrant outputs are as follows: ROBB/ROBU/ROBL/ROBR are bottom, upper, left, and right quadrant density; and are also listed as RHO1, RH02, RH03, RH04 in the LDWG listing. The other outputs (Delta Rho, PEF) are listed with their quadrants as DRHB/DRHU/DRHL/DRHR, PEB/PEU/PEL/PER. The LDWG outputs of CALA and CALS are HDIA and VDIA respectively. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 76 4 66 1 5 66 6 73 7 65 8 68 O. 5 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: TYPE REPR CODE VALUE 9 65 FT 11 66 13 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 0 ** SET TYPE ~ CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELE~ CODE (HEX) DEPT FT 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 FET MWD HR 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RA MWD 0H~I~4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RP MWD 0H~I4000082 O0 000 O0 0 1 1 1 4 68 0000000000 VRA MWD 0P~4~I4000082 O0 000 O0 0 1 1 1 4 68 0000000000 VRP MWD OPEvI~4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DER MWD 0H~44000082 O0 000 O0 0 1 1 1 4 68 0000000000 ROP MWD FPHR 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 GR MWD GAPI 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RHO1 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH02 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH03 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 RH04 MWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DRHOMWD G/C3 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 PEF MWD BN/E 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 DCALMWD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 CALSMWD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 CAf~MWD IN 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 NPHIMWD PU-S 4000082 O0 000 O0 0 1 1 1 4 68 0000000000 ** DATA ** DEPT. 20618.000 FET.MWD -999.250 RA.MWD -999.250 RP.MWD VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD -999.250 ROP.MWD GR.MWD -999.250 RHO1.MWD -999.250 RHO2.MWD -999.250 RHO3.MWD RHO4.MWD -999.250 DRHO.MWD -999.250 PEF.MWD -999.250 DCAL.MWD CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 DEPT. 20000.000 FET.MWD 0.741 RA.MWD -999.250 RP.MWD VRA.MWD 1000.000 VRP.MWD 1000.000 DER.MWD -999.250 ROP.MWD GR.MWD 97.932 RHO1.MWD 2.610 RHO2.MWD 2.671 RHO3.MWD RHO4.MWD 2.711 DRHO.MWD 0.019 PEF.MWD 3.043 DCAL.MWD CALS.MWD 8.802 CALA.MWD 8.735 NPHI.MWD 31.800 -999.250 123.291 -999.250 -999.250 -999.250 204.544 2.603 0.413 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE 10 DEPT. 19000. 000 FET.MWD VRA . MWD 4. 574 VR P . i4WD GR. MWD 99. 523 RHO1 . MWD RH04 .MWD 2. 629 DRHO.MWD CALS.MWD 8. 868 CALA.MWD DEPT. 18000. 000 FET.MWD VRA . MWD 4. 893 VRP. MWD GR.MWD 94. 735 RHO1 .MWD RH04 . MWD 2. 581 DRHO. MWD CALS . MWD 8. 208 CALA . MWD DEPT. 17000. 000 FET. MWD VRA . MWD 5. 034 VRP. MWD GR.MWD 122. 234 RHO1 .MWD RHO4.MWD -999.250 DRHO.MWD CALS. MWD - 999. 250 CALA. MWD DEPT. 16000. 000 FET. MWD VRA.MWD 3 . 533 VRP.MWD GR.MWD 112. 969 RHO1 .MWD RH0 4 . MWD - 999. 250 DRHO . MWD CALS. MWD - 999.250 CAI_~. MWD DEPT. 15000. 000 FET. MWD VRA . MWD -999.250 VR P . MWD GR.MWD 74.246 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.PlWD -999.250 CALA.MWD DEPT. 14000. 000 FET.MWD VRA . MWD -999. 250 VR P . MWD GR.MWD 73. 414 RHO1 .MWD RHO 4 . MWD -999.250 DRHO . MWD CABS. MWD -999. 250 CALA . MWD DEPT. 13 O00. 000 FET. MWD VRA . MWD -999.250 VRP . MWD GR.MWD 92.328 RHO1.MWD RH04. MWD - 999. 250 DRHO. MWD CABS. MWD -999. 250 CALA. MWD DEPT. 12000. 000 FET.MWD VRA . MWD -999. 250 VR P . MWD GR.MWD 78. 730 RHO1 .MWD RHO4.MWD -999.250 DRHO.MWD CAL S . MWD -999. 250 CALA . MWD DEPT. llO00.O00 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 99.340 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CA~A.MWD 1. 722 RA. MWD 5. 231 DER. MWD 2. 627 RH02. MWD O. 023 PEF. MWD 8. 868 NPHI.MWD 1. 600 RA.MWD 5. 410 DER . MWD 2.581 RHO2 . MWD O. 027 PEF.MWD 7. 868 NPHI.MWD 0.293 RA.MWD 5.461 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD 0.582 RA.MWD 3.748 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD 4.543 5.083 2.643 3.336 31.600 4.788 5.220 2.581 3.691 33.600 4.924 5.113 -999.250 -999.250 -999.250 3.486 3.625 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 RP.MWD ROP.MWD RHO3.MWD DCAL.MWD RP.MWD ROP. MWD RH03 . MWD DCAL . MWD RP.MWD ROP.MWD RHO3.MWD DCAL.MWD RP.MWD ROP. MWD RH0 3 . ~D DCAL . MWD RP.MWD ROP. MWD RH03. MWD DCAL . MWD RP.MWD ROP.MWD RH03. MWD DCAL. MWD RP.MWD ROP. MWD RH03 . MWD DCAL . MWD RP.MWD ROP. MWD RH03 . MWD DCAL. MWD RP.MWD ROP. MWD RH03 . MWD DCAL . MWD 5.270 124. 121 2. 595 0.178 5.378 36. 218 2. 581 O. 045 5.219 153.856 -999.250 -999.250 3.707 141.744 -999.250 -999.250 -999.250 24.092 -999.250 -999.250 -999.250 39.539 -999.250 -999.250 -999.250 76.262 -999.250 -999.250 -999.250 141.553 -999.250 -999.250 -999.250 64.281 -999.250 -999.250 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 11 DEPT. 10000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 24.994 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD DEPT. 9000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 43.470 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF. MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD DEPT. 8000.000 FET.MWD -999.250 RA.MWD VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD GR.MWD 72.543 RHO1.MWD -999.250 RHO2.MWD RHO4.MWD -999.250 DRHO.MWD -999.250 PEF. MWD CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 DEPT. 7000.000 FET.MWD -999.250 RA.MWD -999.250 VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD -999.250 GR.MWD 40.017 RHO1.MWD -999.250 RHO2.MWD -999.250 RHO4.MWD -999.250 DRHO.MWD -999.250 PEF.MWD -999.250 CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 DEPT. 6000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 66.280 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF.MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF. MWD -999.250 NPHI.MWD -999.250 RA.MWD -999.250 DER.MWD -999.250 RHO2.MWD -999.250 PEF. MWD -999.250 NPHI.MWD DEPT. 5000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 84.700 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CAI_~.MWD DEPT. 4000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 81.938 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD DEPT. 3000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 47.266 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 DEPT. 2000.000 FET.MWD -999.250 RA.MWD -999.250 VRA.MWD -999.250 VRP.MWD -999.250 DER.MWD -999.250 GR.MWD 39.130 RHO1.MWD -999.250 RHO2.MWD -999.250 RHO4.MWD -999.250 DRHO.MWD -999.250 PEF.MWD -999.250 CALS.MWD -999.250 CALA.MWD -999.250 NPHI.MWD -999.250 RP.MWD ROP.MWD RHO3.MWD DCAL.MWD RP.MWD ROP. MWD RH03 . MWD DCAL . MWD RP.MWD ROP. MWD RH 0 3 . MWD DCAL . MWD RP.MWD ROP. MWD RH0 3 . MWD DCAL.MWD RP.MWD ROP.MWD RH03. MWD DCAL . MWD RP.MWD ROP.MWD RHO3.MWD DCAL.MWD RP.MWD ROP. MWD RH0 3 . MWD DCAL.MWD RP.MWD ROP. MWD RH03 . MWD DCAL.MWD RP.MWD ROP. MWD RH03 . MWD DCAL.MWD -999.250 796.063 -999.250 -999.250 -999.250 653.563 -999.250 -999.250 -999.250 182.836 -999.250 -999.250 -999.250 33.020 -999.250 -999.250 -999.250 470.970 -999.250 -999.250 -999.250 113.770 -999.250 -999.250 -999.250 714.844 -999.250 -999.250 -999.250 105. 309 - 999. 250 -999.250 -999.250 643. 670 -999.250 -999.250 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 12 DEPT. 1000.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 49.800 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD DEPT. 200.000 FET.MWD VRA.MWD -999.250 VRP.MWD GR.MWD 17.780 RHO1.MWD RHO4.MWD -999.250 DRHO.MWD CALS.MWD -999.250 CALA.MWD -999. -999. -999. -999. -999. -999. -999. -999. -999. -999. 250 RA.MWD 250 DER.MWD 250 RHO2.MWD 250 PEF. MWD 250 NPHI.MWD 250 RA.MWD 250 DER.MWD 250 RHO2.MWD 250 PEF.MWD 250 NPHI.MWD -999.250 RP.~fWD -999.250 ROP.MWD -999.250 RHO3.MWD -999.250 DCAL.MWD -999.250 -999.250 RP.MWD -999.250 ROP.MWD -999.250 RHO3.MWD -999.250 DCAL.MWD -999.250 -999.250 100.140 -999.250 -999.250 -999.250 329.180 -999.250 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .001 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .002 SERVICE · FLIC VERSIO~ ' 001C01 DATE ' 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUM~ER: 2 EDITED MERGEDMAD Depth shifted and clipped curves; all MAD runs merged using earliest passes. DEPTH INCREMENT: 0.5000 FILE SO?4~ARY LDWG TOOL CODE $ MERGED DATA SOURCE LDWG TOOL CODE START DEPTH STOP DEPTH 10291.0 20517.0 MAD RUN NO. MAD PASS NO. MERGE TOP MERGE BASE LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 13 $ REMARKS: This is the MAD pass data collected after run 4 with the CDR. The data has been clipped and edited. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE- 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 24 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 42 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAIVE SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 ATR MAD OPiM~4000082 O0 000 O0 0 2 1 1 4 68 0000000000 PSR MAD 0Pk4~4000082 O0 000 O0 0 2 1 1 4 68 0000000000 DER MAD 0Pi~44000082 O0 000 O0 0 2 1 1 4 68 0000000000 ROPE MAD F/HR 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 GR MAD GAPI 4000082 O0 000 O0 0 2 1 1 4 68 0000000000 ** DATA ** DEPT. 20517.020 ATR.MAD -999.250 ROPE.MAD 60.403 GR.MAD -999.250 PSR.MAD -999.250 DER.MAD -999.250 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 14 DEPT. 20291.520 ATR.MAD -999.250 ROPE.MAD -999.250 GR.MAD 100.444 PSR. MAD -999.250 DER.MAD -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION : O01CO1 DATE ' 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE **** FILE HEADER **** FILE NAME : EDIT .003 SERVICE · FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE FILE HEADER FILE NIIMBER: 3 EDITED MAD PASSES Depth shifted and clipped curves; for each pass of each run in separate files. MAD RUN NUM~ER: 1 MAD PASS iVTJMBER: 1 DEPTH INCRE~IENT: 0.5000 FILE SUMMARY LDWG TOOL CODE START DEPTH MAD 20291.0 $ BASELINE CURVE FOR SHIFTS: GR CURVE SHIFT DATA (MEASURED DEPTH) BASELINE DEPTH .............. 88888.0 16945.0 16944.0 16940.5 16936.0 STOP DEPTH 20517.0 .......... EQUIVALENT UNSHIFTED DEPTH .......... 88893.0 88893.0 88893.0 16950.0 16950.0 16950.0 16948.5 16948.5 16948.5 16944.5 16944.5 16944.5 16940.0 16940.0 16940.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15: 07 PAGE: 15 16927.5 16925.5 16913 5 16910 5 16897 0 16890 5 16872 0 16869 0 16861 0 16855 0 16843 0 16840 0 16837 5 16830.0 16827.0 16824.0 16822.0 16801.0 16799.0 16792.5 16786.0 16784.0 16775.0 16771.0 16764.5 16759.0 16752.5 16726.5 16724.5 16708.0 16706.5 16700.5 16697.0 16693.5 16691.5 16687.5 16682.5 16673.5 16668.0 16661.0 16653.5 16646.0 16640.0 16636.0 16607.5 16606.0 16587.0 16574.0 16563.0 16554.0 16544.5 16536.5 16532.0 16530.5 16526.5 16932.5 16931.0 16919.0 16915.5 16902.0 16895.0 16876.0 16872.5 16864.0 16857.5 16845.5 16842.5 16839.5 16832.0 16829.5 16827.0 16825.5 16804.5 16802.0 16795.0 16787.5 16786.0 16778.0 16774 5 16767 5 16761 5 16754 5 16728 5 16727 0 16710 5 16708 5 16703 0 16699.0 16695.0 16692.5 16688.0 16682.5 16673.0 16667.0 16659.5 16651.5 16643.5 16637.0 16632.5 16604.0 16602.0 16583.0 16570.5 16560.0 16550.0 16541.0 16533.5 16529.5 16528.5 16525.0 16932.5 16931.0 16919.0 16915.5 16902.0 16895.0 16876.0 16872.5 16864.0 16857.5 16845.5 16842.5 16839.5 16832.0 16829.5 16827.0 16825.5 16804.5 16802 0 16795 0 16787 5 16786 0 16778 0 16774 5 16767 5 16761 5 16754 5 16728.5 16727.0 16710.5 16708.5 16703.0 16699.0 16695.0 16692.5 16688.0 16682.5 16673.0 16667.0 16659.5 16651.5 16643.5 16637.0 16632.5 16604.0 16602.0 16583.0 16570.5 16560.0 16550.0 16541.0 16533.5 16529.5 16528.5 16525.0 16932.5 16931.0 16919.0 16915.5 16902.0 16895.0 16876.0 16872.5 16864.0 16857.5 16845 5 16842 5 16839 5 16832 0 16829 5 16827 0 16825 5 16804 5 16802 0 16795 0 16787 5 16786.0 16778.0 16774.5 16767.5 16761.5 16754.5 16728.5 16727.0 16710.5 16708.5 16703.0 16699.0 16695.0 16692.5 16688.0 16682.5 16673.0 16667.0 16659.5 16651.5 16643.5 16637.0 16632 5 16604 0 16602 0 16583 0 16570 5 16560 0 16550 0 16541 0 16533 5 16529 5 16528 5 16525.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 16 16521.0 16514.0 16505.0 16499.5 16491.5 16488.0 16482.5 16479.0 16471.5 16467.0 16464.0 16461.5 16458.0 16449.5 16442.5 16438.0 16429.5 16424.0 16411.5 16409.0 16405.5 16404.5 164 O1.5 16398.0 16387.5 16386.5 16372.0 16369.5 16360.5 16358.0 16354.0 16345.0 16338.5 16331.0 16329.0 16321.5 16314.0 16308.5 16303.5 16300.0 16285.5 16278.5 16272.0 162 69.5 16184.5 16182.5 16172.5 16168.5 16162.5 16159.5 16153.0 16148.0 16137.0 16135.5 16129.5 16520.0 16513.5 16505.0 16500.0 16492.5 16488.0 16482.0 16478.0 16470.5 16465.0 16461.5 16458.5 16454.5 16445.5 16438.5 16435.0 16426.5 16421 5 16409 0 16407 0 16403 5 16403 0 16400 0 16397 0 16386.5 16385.0 16370.5 16367.5 16358.5 16355.5 16351.0 16341.5 16335.5 16328.0 16326.5 16318.5 16310.5 16304.5 16300.0 16297.5 16283.0 16276.5 16270.0 16267.0 16182.0 16179.5 16169.5 16166.5 16162.0 16159.5 16153.5 16149.0 16138.5 16136.5 16130.0 16520.0 16513.5 16505.0 16500.0 16492.5 16488.0 16482 0 16478 0 16470 5 16465 0 16461 5 16458 5 16454 5 16445 5 16438 5 16435 0 16426 5 16421 5 16409.0 16407.0 16403.5 16403.0 16400.0 16397.0 16386.5 16385.0 16370.5 16367.5 16358.5 16355.5 16351.0 16341.5 16335.5 16328.0 16326.5 16318.5 16310.5 16304.5 16300.0 16297.5 16283.0 16276.5 16270.0 16267.0 16182.0 16179.5 16169.5 16166.5 16162.0 16159.5 16153.5 16149.0 16138.5 16136.5 16130.0 16520 0 16513 5 16505 0 16500 0 16492 5 16488 0 16482 0 16478.0 16470.5 16465.0 16461.5 16458.5 16454.5 16445.5 16438.5 16435.0 16426.5 16421.5 16409.0 16407.0 16403.5 16403.0 16400.0 16397.0 16386.5 16385.0 16370.5 16367.5 16358.5 16355.5 16351.0 16341.5 16335.5 16328.0 16326.5 16318.5 16310.5 16304.5 16300.0 16297 5 16283 0 16276 5 16270 0 16267 0 16182 0 16179 5 16169.5 16166.5 16162.0 16159.5 16153.5 16149.0 16138.5 16136.5 16130.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 17 16125.0 16123.5 16118.0 16114.0 16109.5 16100.0 16098.0 16075.0 16072.5 16051.5 16048.0 16041.0 16036.0 16033.0 16030.5 16023.5 16022.0 16016.0 16015 5 16013 0 16001 5 15992 5 15991 0 15984 5 15982 5 15977 0 15974 0 15971 5 15968 5 15967 5 15965 5 15963 5 15961 0 15955.0 15953.0 15943.0 15935.0 15930.0 15916.0 15909.0 15903.0 15888.0 15883.0 15878.5 15874.5 15870.5 15858.0 15849.5 15846.0 15842.0 15836.0 15830.0 15818.0 15811.5 15808.5 16126.0 16126.0 16126.0 16124.0 16124.0 16124 . 0 16116.0 16116.0 16116.0 16111.5 16111.5 16111.5 16106.5 16106.5 16106.5 16097.0 16097.0 16097.0 16094.5 16094.5 16094.5 16071.5 16071.5 16071.5 16068.5 16068.5 16068.5 16047.5 16047.5 16047.5 16043.5 16043.5 16043.5 16036.5 16036.5 16036.5 16031.0 16031.0 16031.0 16028.0 16028.0 16028.0 16025.0 16025.0 16025.0 16019.0 16019.0 16019.0 16017.5 16017.5 16017.5 16011.0 16011.0 16011.0 16010.0 16010.0 16010.0 16007.0 16007.0 16007.0 15995.0 15995.0 15995.0 15986.0 15986.0 15986.0 15984.0 15984.0 15984.0 15977.5 15977.5 15977.5 15975.0 15975.0 15975.0 15969.0 15969.0 15969.0 15965.5 15965.5 15965.5 15963.0 15963.0 15963.0 15961.0 15961.0 15961.0 15960.0 15960.0 15960 0 15958.5 15958.5 15958 15957.5 15957.5 15957 15955.5 15955.5 15955 15949.5 15949.5 15949 15948.0 15948.0 15948 15938.5 15938.5 15938 15930.5 15930.5 15930 15926.0 15926.0 15926 15911.5 15911 5 15911 15904.5 15904 5 15904 15898.0 15898 15882.5 15882 15877.5 15877 15874.5 15874 15870.5 15870 15867.0 15867 15854.5 15854 15846.5 15846 15843.0 15843 15840.0 15840.0 15840.0 15834.5 15834.5 15834.5 15829.0 15829.0 15829.0 15818.0 15818.0 15818.0 15811.5 15811.5 15811.5 15809.0 15809.0 15809.0 5 5 5 5 0 5 5 0 5 5 0 15898 0 5 15882 5 5 15877 5 5 15874 5 5 15870 5 0 15867.0 5 15854.5 5 15846.5 0 15843.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 18 15805.0 15799.5 15793.0 15790.0 15785.0 15779.0 15772.5 15769.0 15766.0 15757.5 15750.5 15739.0 15729.0 15724.0 15718.0 15701.5 15688.5 15681.5 15676.0 15642.5 15633.5 15630.0 15626.0 15618.5 15612.5 15610.0 15607.5 15597 5 15593 5 15589 5 15587 0 15583 5 15583 0 15577 0 15575 0 15573.0 15571.0 15568.0 15566.0 15563.5 15562.5 15558.0 15556.0 15554.0 15545.5 15538.5 15522.5 15511.0 15502.0 15497.0 15476.0 15462.0 15450.0 15418.5 15413.0 15805.0 15799.0 15791.5 15788.0 15784.5 15780.5 15774.5 15769.5 15766.0 15756.0 15749.0 15738 5 15729 0 15723 0 15717 5 15701 5 15688 0 15680 5 15674.5 15641.0 15632.5 15629.0 15625.5 15619.0 15613.5 1561 O. 5 15607.5 15595.0 15590.0 15585.0 15583.5 15580.0 15579.0 15573.0 15570.5 15568.5 15566.0 15562.5 15560.0 15557.5 15556.0 15551.0 15548.5 15546.5 15538.0 15530.5 15514.5 15502.5 15493.5 15488.0 15467.0 15452.5 15440.0 15408.5 15403.5 15805.0 15799.0 15791.5 15788.0 15784.5 15780.5 15774.5 15769.5 15766.0 15756.0 15749.0 15738.5 15729.0 15723 0 15717 5 15701 5 15688 0 15680 5 15674 5 15641 0 15632 5 15629.0 15625.5 15619.0 15613.5 15610.5 15607.5 15595.0 15590.0 15585.0 15583.5 15580.0 15579.0 15573.0 15570.5 15568.5 15566.0 15562.5 15560.0 15557.5 15556.0 15551.0 15548.5 15546.5 15538.0 15530.5 15514.5 15502.5 15493.5 15488.0 15467.0 15452.5 15440.0 15408.5 15403.5 15805.0 15799.0 15791.5 15788.0 15784.5 15780.5 15774.5 15769.5 15766.0 15756.0 15749 0 15738 5 15729 0 15723 0 15717 5 15701 5 15688 0 15680 5 15674.5 15641.0 15632.5 15629.0 15625.5 15619.0 15613.5 15610.5 15607.5 15595.0 15590.0 15585.0 15583.5 15580.0 15579.0 15573.0 15570.5 15568.5 15566. 0 15562.5 15560. 0 15557.5 15556.0 15551 0 15548 5 15546 5 15538 0 15530 5 15514 5 15502 5 15493 5 15488.0 15467.0 15452.5 15440.0 15408.5 15403.5 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 19 15387.0 15382.0 15376.0 15371.0 15365.5 15361.5 15359.0 15354.5 15353.0 15342.5 15338.0 15335.0 15323.5 15318.5 15310.5 15302.0 15300.0 15294.0 15284.5 15245.5 15233.5 15201.0 15196.5 15189.0 15185.0 15174.5 15170.0 15168.5 15161.0 15157.5 15151.5 15148.0 15130.5 15125.5 15119.5 15115.5 15108.5 15100.5 15091.0 15059.5 15052.0 15046.0 15039 0 15031 5 15029 5 15024 5 15012 0 15O00 0 14984 0 14980 0 14961 5 14958.5 14939.0 14934.5 14928.5 15377.5 15373.0 15367.5 15361.5 15356.0 15352.5 15350.5 15344.5 15342.5 15332.5 15328.0 15325.5 15314.0 15309.5 15302.0 15293.5 15291.0 15284.5 15274.5 15235.5 15223.0 15190.5 15186.5 15179 0 15174 5 15164 0 15159 0 15157 0 15148 5 15145 0 15139 5 15136.5 15119.0 15114.5 15108.5 15104.5 15097.0 15090.0 15081.5 15050.0 15043.5 15038.0 15030.5 15023.0 15020.5 15015.0 15001.5 14989.0 14973.0 14968.5 14950.0 14946.5 14927.0 14923.5 14917.5 15377.5 15373.0 15367.5 15361.5 15356.0 15352.5 15350.5 15344.5 15342.5 15332.5 15328.0 15325.5 15314.0 15309 5 15302 0 15293 5 15291 0 15284 5 15274 5 15235 5 15223 0 15190 5 15186 5 15179 0 15174 5 15164.0 15159.0 15157.0 15148.5 15145.0 15139.5 15136.5 15119.0 15114.5 15108.5 15104.5 15097.0 15090.0 15081.5 15050.0 15043.5 15038.0 15030.5 15023.0 15020.5 15015.0 15001.5 14989.0 14973.0 14968.5 14950.0 14946.5 14927.0 14923.5 14917.5 15377 5 15373 0 15367 5 15361 5 15356 0 15352 5 15350 5 15344 5 15342 5 15332 5 15328 0 15325 5 15314 0 15309 5 15302 0 15293 5 15291 0 15284 5 15274 5 15235 5 15223 0 15190.5 15186.5 15179.0 15174.5 15164.0 15159.0 15157.0 15148.5 15145.0 15139.5 15136.5 15119.0 15114.5 15108.5 15104.5 15097.0 15090.0 15081.5 15050.0 15043.5 15038.0 15030.5 15023.0 15020.5 15015.0 15001.5 14989.0 14973.0 14968.5 14950.0 14946.5 14927.0 14923.5 14917.5 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 2O 14924.0 14917.5 14912.5 14909.5 14904.5 14902.5 14898.5 14893.5 14890.0 14888.0 14883.5 14876.0 14871.5 14850.0 14839.5 14820.5 14808.0 14790.0 14738.0 14732.0 14715.0 14708.0 14699.5 7055.0 100.0 $ 14912.5 14906.0 14900.0 14896.5 14892.0 14889.5 14883.5 14880.0 14877.0 14875.5 14871.5 14865.0 14860.0 14838.5 14827 5 14808 5 14795 5 14777 0 14725 0 14719 5 14702 5 14695 5 14687 5 7055 0 100.0 14912.5 14906.0 14900.0 14896.5 14892.0 14889 5 14883 5 14880 0 14877 0 14875 5 14871 5 14865 0 14860 0 14838 5 14827.5 14808.5 14795.5 14777.0 14725.0 14719.5 14702.5 14695.5 14687.5 7055.0 100.0 14912 5 14906 0 14900 0 14896 5 14892 0 14889 5 14883 5 14880 0 14877.0 14875.5 14871.5 14865.0 14860.0 14838.5 14827.5 14808.5 14795.5 14777.0 14725.0 14719.5 14702.5 14695.5 14687.5 7055.0 100.0 REMARKS: This is the edited and clipped MAD pass data. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE- 54EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 24 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 42 12 68 13 66 0 14 65 FT 15 66 68 0g~'666- 6U~I4'HD 609'09 ~'HdOH 0g~'666- ~V~4'HHO 0~'666- ~'HSW 0~U'666- ~'H£V 0~0'£r90~ 0000000000 89 ~ r r £ 0 O0 000 O0 ~80000~ IJVD CV~4 HD 0000000000 89 ~ r r E 0 O0 000 O0 ~80000~ HH/W GV~4~HOH 0000000000 89 ~ r ~ E 0 O0 000 O0 ESOOOO~W~CHO CrCI4 0000000000 89 ~ r r £ 0 O0 000 O0 ~80000~I4~HtO CV[4 HSd 0000000000 89 ~ r r f 0 O0 000 O0 ~80000~AU4~IO 6~7~4 0000000000 89 ~ r r f 0 O0 000 O0 ~80000~ £~ (X~H) HOOD P~{ff~ dI4VS ~WiIN OON SSV~ID HdX£ DOff # HHfFHO OI SSHDOHJ Hd~H ~ZIS gWIIN HWILN HqI~ IdV Id¥ IdV IHV HDIAH~S £IN_O AHHS Hf4VN ~ NVHD - ~JXE £~S ~ r 99 0 r 99 9~ ~H]~VA ~COD Hd~IH ~dXE LO:£r 866r-HdV-9 ~SUT;STq uoT;eOTgTJ~A ~de£ SI5 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 22 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: O. 5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH MWD 200.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 15613.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE GR GA34~A RAY $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : DRILLERS CASING DEPTH (FT) : BOREHOLE CONDITIONS MLrD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OH~ff4) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): 29-JUL-97 FAST 4. OC REAL - TIME 20613.0 200.0 20613.0 75 0.1 75.0 TOOL NUMBER ........... MWD GR 8.500 17661.0 OBM 9.60 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 23 RE~J~KS: ORIGINAL HOLE BEFORE PLUGBACK MWD GR, CDR, CDR/ADN AND CDR MAD MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 17670' (RUN 2) CDR/ADN DATA 17670' - TD (RUN 3,4) GR AND TNPH ENVIR. CORRECTED WASHDOWN MAD PASS MADE 20243'-20517' CDR ***THIS IS THE MWD GR DATA (RUN 1)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 12 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 85 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 ROPE LW1 F/HR 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 GR LW1 GAPI 4000082 O0 000 O0 0 4 1 1 4 68 0000000000 ** DATA ** LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 24 DEPT. 15613 . 000 ROPE. LW1 6. 260 GR. LW1 - 999. 250 DEPT. 15000. 000 ROPE. LW1 121 . O10 GR. LW1 78. 890 DEPT. 14000. 000 ROPE.LW1 45. 160 GR. LW1 81 . 870 DEPT. 13000. 000 ROPE.LW1 120. 430 GR.LW1 92.100 DEPT. 12000.000 ROPE.LW1 219.690 GR.LW1 78.233 DEPT. 11000. 000 ROPE. LW1 83 . 050 GR. LW1 74 . 290 DEPT. 10000.000 ROPE.LW1 677.250 GR.LW1 28.980 DEPT. 9000.000 ROPE.LW1 535.810 GR.LW1 44.920 DEPT. 8000. 000 ROPE. LW1 189. 860 GR. LW1 76. 800 DEPT. 7000.000 ROPE.LW1 33.020 GR.LW1 40.017 DEPT. 6000. 000 ROPE. LW1 470. 970 GR. LW1 66. 280 DEPT. 5000. 000 ROPE. LW1 113 . 770 GR. LW1 84 . 700 DEPT. 4000.000 ROPE.LW1 714.860 GR.LW1 81.935 DEPT. 3000.000 ROPE.LW1 105.310 GR.LW1 47.260 DEPT. 2000. 000 ROPE. LW1 643 . 670 GR. LW1 39. 130 DEPT. 1000. 000 ROPE . LW1 100.140 GR. LW1 49. 800 DEPT. 200.000 ROPE.LW1 329.180 GR.LW1 17.780 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .004 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 25 **** FILE HEADER **** FILE NA~E : EDIT .005 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 2 DEPTH INCREMENT: O . 5000 FILE SUA~VAR Y VENDOR TOOL CODE START DEPTH STOP DEPTH 15426.0 17670.0 LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) DRILLERS CASING DEPTH (FT) BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/C): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : 29-JUL-97 FAST 4. OC MEMORY 20613.0 200.0 20613.0 75 71.5 73.0 TOOL NUMBER CDR 752 8.500 17661.0 OBM 9.60 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 26 FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE BEFORE PLUGBACK MWD GR, CDR, CDR/ADN AND CDR MAD MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 17670' (RUN 2) CDR/ADN DATA 17670' - TD (RUN 3,4) GR AND TNPH ENVIR. CORRECTED WASHDOWN MAD PASS MADE 20243'-20517' CDR ***THIS IS THE CDR DATA (RUN 2)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 36 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 28 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 27 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ATR LW2 OPg~ff4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PSR LW2 0I{~4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ATVR LW2 OH MM4000082 O0 000 O0 0 5 1 1 4 68 0000000000 PSVR LW2 OH~4~ 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 DER LW2 0I{~944000082 O0 000 O0 0 5 1 1 4 68 0000000000 ROPE LW2 F/HR 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 GR LW2 GAPI 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 TABR LW2 4000082 O0 000 O0 0 5 1 1 4 68 0000000000 ** DATA ** DEPT. 17670. 000 ATR.LW2 -999.250 PSR.LW2 -999.250 ATVR.LW2 PSVR.LW2 -999.250 DER.LW2 -999.250 ROPE. LW2 120.806 GR.LW2 TABR. LW2 -999. 250 DEPT. 17000. 000 ATR.LW2 4. 842 PSR.LW2 5.248 ATVR.LW2 PSVR.LW2 5.280 DER.LW2 5.104 ROPE. LW2 153.856 GR.LW2 TABR . LW2 O . 294 DEPT. 16000. 000 ATR.LW2 3. 583 PSR.LW2 3. 878 ATVR. LW2 PSVR.LW2 3. 938 DER.LW2 3. 767 ROPE. LW2 141. 744 GR. LW2 TABR. LW2 0.7 O1 DEPT. 15426.000 ATR.LW2 -999.250 PSR.LW2 -999.250 ATVR.LW2 PSVR.LW2 -999.250 DER.LW2 -999.250 ROPE.LW2 -999.250 GR.LW2 TABR . LW2 -999. 250 -999.250 - 999. 250 4.907 113.328 3.843 117.502 -999.250 68.886 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .005 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15: 07 PAGE: 28 **** FILE HEADER **** FILE NAME : EDIT .006 SERVICE ·FLIC VERSION ·O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER 6 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: 0.5000 FILE SUlV~IARY VENDOR TOOL CODE START DEPTH STOP DEPTH 17502.0 19477.0 LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR ADN AZIM. DENS./NEUT $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: 29-JUL-97 FAST 4. OC MEMORY 20613.0 200.0 20613.0 90 68.0 73.8 TOOL NUMBER ........... CDR 752 ADN 044 8.500 17661.0 OBM 9.60 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 29 MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OPiMM) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT) .. MUD CAKE AT (MT): NEUTRON TOOL MATRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN): TOOL STANDOFF (IN): 1.0 EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE BEFORE PLUGBACK MWD GR, CDR, CDR/ADN AND CDR MAD MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 17670' (RUN 2) CDR/ADN DATA 17670' - TD (RUN 3,4) GR AND TNPH ENVIR. CORRECTED WASHDOWN MAD PASS MADE 20243'-20517' CDR ***THIS IS THE CDR/ADN DATA (RUN 3)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 112 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 9 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 LIS Tape Verification Listing Schlumberger Alaska Compu ting Cent er 6-APR-1998 15:07 PAGE: 3O ** SET TYPE - C~ ** NAME SERVUNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ATR LW3 0H~4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PSR LW3 0H~4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ATVR LW3 0HI~4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PSVR LW3 0I~4~4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROPE LW3 F/HR 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 GR LW3 GAPI 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TABR LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TABD LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBB LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBU LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBL LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ROBR LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHB LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHU LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHL LW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DRHRLW3 G/C3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PEB LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PEU LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PEL LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 PER LW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 CALNLW3 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 TNPH LW3 PU 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 T1VRALW3 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 DCALLW3 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 HDIA LW3 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 VDIA LW3 IN 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 RPM LW3 RPM 4000082 O0 000 O0 0 6 1 1 4 68 0000000000 ** DATA ** DEPT. 19477. 000 ATR. LW3 -999. 250 PSR. LW3 -999. 250 ATVR. LW3 PSVR.LW3 1000.000 ROPE.LW3 185.526 GR.LW3 -999.250 TABR.LW3 TABD.LW3 -999.250 ROBB.LW3 -999.250 ROBU. LW3 -999.250 ROBL.LW3 ROBR.LW3 -999.250 DRHB.LW3 -999.250 DRHU. LW3 -999.250 DRHL.LW3 DRHR. LW3 - 999. 250 PEB. LW3 - 999.250 PEU. LW3 - 999.250 PEL. LW3 PER.LW3 -999.250 CALN. LW3 -999.250 TNPH. LW3 -999.250 TNRA.LW3 DCAL.LW3 -999.250 HDIA.LW3 -999.250 VDIA.LW3 -999.250 RPM.LW3 DEPT. 19000. 000 ATR.LW3 4, 827 PSR.LW3 5. 526 ATVR. LW3 PSVR.LW3 5.382 ROPE.LW3 120.806 GR.LW3 99.345 TABR.LW3 TABD.LW3 2.933 ROBB.LW3 2.617 ROBU. LW3 2.588 ROBL.LW3 ROBR.LW3 2.599 DRHB.LW3 O. 009 DRHU. LW3 O. 090 DRHL.LW3 DRHR.LW3 O. 054 PEB.LW3 3. 477 PEU. LW3 4. 780 PEL.LW3 PER.LW3 4. 016 CALN. LW3 8. 752 TNPH. LW3 32. 400 TNRA.LW3 DCAL.LW3 0.252 HDIA.LW3 9.006 VDIA.LW3 8.939 RPM. LW3 1000.000 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 4. 608 1. 962 2. 638 O. 089 4. 471 20. 757 114. 000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: DEPT. PSVR . LW3 TABD. LW3 ROBR.LW3 DRHR . LW3 PER. LW3 DCAL. LW3 18000 000 5 291 5 714 2 479 0 147 6 248 0 O87 DEPT. 17498.500 PSVR.LW3 -999.250 TABD.LW3 -999.250 ROBR.LW3 -999.250 DRHR.LW3 -999.250 PER.LW3 -999.250 DCAL.LW3 -999.250 A TR . LW3 ROPE. LW3 ROBB. LW3 DRHB . LW3 PEB.LW3 CALN. LW3 HDIA . LW3 4. 806 PSR. LW3 41. 002 GR. LW3 2. 479 ROBU. LW3 O . 147 DRHU. LW3 6.248 PEU. LW3 8.587 TNPH.LW3 7. 868 VDIA. LW3 ATR.LW3 -999.250 PSR.LW3 ROPE. LW3 -999. 250 GR. LW3 ROBB.LW3 -999.250 ROBU. LW3 DRHB.LW3 -999. 250 DRHU. LW3 PEB. LW3 -999. 250 PEU. LW3 CALN. LW3 -999.250 TNPH. LW3 HDIA.LW3 -999.250 VDIA.LW3 5 324 ATVR. LW3 93 775 TABR. LW3 2 479 ROBL. LW3 0 147 DRHL. LW3 6 248 PEL. LW3 36 300 TNRA.LW3 8. 846 RPM. LW3 -999.250 ATVR.LW3 -999.250 TABR.LW3 -999.250 ROBL.LW3 -999.250 DRHL.LW3 -999.250 PEL.LW3 -999.250 TNRA.LW3 -999.250 RPM. LW3 4.805 2.333 2.479 0.147 6.248 22.196 0.000 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .006 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NANiE : EDIT .007 SERVICE : FLIC VERSION : O01CO1 DATE · 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUMBER 7 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: 0.5000 FILE SU~ff~RY VENDOR TOOL CODE START DEPTH STOP DEPTH MWD 19344.0 20613.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15: 07 PAGE: 32 $ LOG HEADER DATA DATE LOGGED: SOFTWARE: SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY or REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR ADN AZIM. DENS./NEUT $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (0H3~4) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): NEUTRON TOOL MATR IX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: 29-JUL-97 FAST 4.0C MEMORY 20613.0 200.0 20613.0 9O 68.0 73.8 TOOL NUMBER CDR 752 ADN 044 8.500 17661.0 OBM 9.60 SANDSTONE 2.65 1.0 20000 ORIGINAL HOLE BEFORE PLUGBACK MWD GR, CDR, CDR/ADN AND CDR MAD MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 17670' (RUN 2) CDR/ADN DATA 17670' - TD (RUN 3,4) GR AND TNPH ENVIR. CORRECTED WASHDOWN MAD PASS MADE 20243 ' -20517' CDR LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 33 ***THIS IS THE CDR/ADN DATA (RUN 4)*** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE- 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 112 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 9 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NA~E SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ATR LW4 0H~4000082 O0 000 O0 0 7 1 1 4 68 0000000000 PSR LW4 OH~ff4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ATVR LW4 0H~i~4000082 O0 000 O0 0 7 1 1 4 68 0000000000 PSVR LW4 OI4~M 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ROPE LW4 F/HR 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 GR LW4 GAPI 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 TABR LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 TABD LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ROBB LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ROBU LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ROBL LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ROBR LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 DRHB LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 DRHULW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 DRHL LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 DRHR LW4 G/C3 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 PEB LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 34 NAME SERVUNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) PEU LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 PEL LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 PER LW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 CALNLW4 IN 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 TNPH LW4 PU 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 TN-RALW4 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 DCALLW4 IN 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 HDIA LW4 IN 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 VDIA LW4 IN 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 RPM LW4 RPM 4000082 O0 000 O0 0 7 1 1 4 68 0000000000 ** DATA ** DEPT. 20613. 000 ATR.LW4 -999.250 PSR.LW4 -999.250 ATVR.LW4 PSVR.LW4 -999.250 ROPE. LW4 123.291 GR.LW4 -999.250 TABR.LW4 TABD. LW4 -999. 250 ROBB. LW4 -999. 250 ROBU. LW4 ~ 999. 250 ROBL. LW4 ROBR. LW4 -999. 250 DRHB. LW4 -999. 250 DRHU. LW4 - 999. 250 DRHL. LW4 DRHR.LW4 -999.250 PEB.LW4 -999.250 PEU. LW4 -999.250 PEL.LW4 PER.LW4 -999.250 CALN. LW4 -999.250 TNPH.LW4 -999.250 TNRA.LW4 DCAL.LW4 -999.250 HDIA.LW4 -999.250 VDIA.LW4 -999.250 RPM. LW4 DEPT. 20000. 000 ATR. LW4 -999. 250 PSR. LW4 -999. 250 ATVR. LW4 PSVR.LW4 1000.000 ROPE.LW4 183.677 GR.LW4 108.222 TABR.LW4 TABD. LW4 2. 556 ROBB. LW4 2. 592 ROBU. LW4 2. 726 ROBL. LW4 ROBR.LW4 2. 652 DRHB.LW4 O. 038 DRHU. LW4 O. 045 DRHL. LW4 DRHR.LW4 0.047 PEB.LW4 3.876 PEU.LW4 4.540 PEL.LW4 PER.LW4 3.339 CALN. LW4 8.896 TNPH.LW4 32.200 TNRA.LW4 DCAL.LW4 0.396 HDIA.LW4 8. 735 VDIA.LW4 8. 735 RPM. LW4 DEPT. 19340. 000 ATR.LW4 -999.250 PSR.LW4 -999.250 ATVR.LW4 PSVR. LW4 -999. 250 ROPE. LW4 -999. 250 GR. LW4 - 999. 250 TABR. LW4 TABD. LW4 -999. 250 ROBB. LW4 -999. 250 ROBU. LW4 - 999. 250 ROBL. LW4 ROBR. LW4 -999. 250 DRHB. LW4 -999. 250 DRHU. LW4 - 999. 250 DRHL. LW4 DRHR.LW4 -999.250 PEB.LW4 -999.250 PEU. LW4 -999.250 PEL.LW4 PER.LW4 -999.250 CALN. LW4 -999.250 TNPH.LW4 -999.250 TNRA.LW4 DCAL.LW4 -999.250 HDIA.LW4 -999.250 VDIA.LW4 -999.250 RPM. LW4 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 1000.000 0.740 2.790 0.042 4.802 20.671 109.000 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15: 07 PAGE: 35 **** FILE TRAILER **** FILE NAME : EDIT .007 SERVICE : ?LIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .008 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE 19Zk4~ER 8 RAW MAD Curves and log header data for each pass of each run in separate files. MAD RUN NUMBER: 4 MAD PASS NLrM~ER: 1 DEPTH INCREMENT: O . 5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH 20247.0 20517.0 LOG HEADER DATA DATE LOGGED: 29- JUL- 97 SOFTWARE: SURFACE SOFTWARE VERSION: FAST DOWNHOLE SOFTWARE VERSION: 4. OC DATA TYPE (MEMORY or REAL-TIME): MEMORY TD DRILLER (FT) : 20613.0 TOP LOG INTERVAL (FT) : 200.0 BOTTOM LOG INTERVAL (FT) : 20613.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG) MINIMUM ANGLE: 71.1 MAXIMU]~ ANGLE: 71.9 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CDR RESIST./GR $ TOOL NUMBER CDR 752 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 36 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) DRILLERS CASING DEPTH (FT) 8.500 17661.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OH~M) AT TEMPERATURE (DEGF): MUD AT I~EASURED TEMPERATURE (MT): MUD AT MAX CIRCULATIONG TEMPERATURE : MUD FILTRATE AT (MT): MUD CAKE AT (MT): OBM 9.60 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): 20000 REMARKS: ORIGINAL HOLE BEFORE PLUGBACK MWD GR, CDR, CDR/ADN AND CDR MAD MWD GR DATA FROM 200' - 15613' (RUN 1) CDR DATA 15613' - 17670' (RUN 2) CDR/ADN DATA 17670' - TD (RUN 3,4) GR AND TNPH ENVIR. CORRECTED WASHDOWN MAD PASS MADE 20243'-20517' CDR ***THIS IS THE MAD PASS CDR DATA *** $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 24 4 66 1 5 66 6 73 7 65 8 68 O. 5 LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 37 TYPE REPR CODE VALUE 9 65 FT 11 66 42 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 4000082 O0 000 O0 0 8 1 1 4 68 0000000000 ATR MAi 0H~4000082 O0 000 O0 0 8 1 1 4 68 0000000000 PSR MAi OH~4M 4000082 O0 000 O0 0 8 1 1 4 68 0000000000 DER MAI 0P~4~4000082 O0 000 O0 0 8 1 1 4 68 0000000000 ROPE MA1 F/HR 4000082 O0 000 O0 0 8 1 1 4 68 0000000000 GR MAi GAPI 4000082 O0 000 O0 0 8 1 1 4 68 0000000000 ** DATA ** DEPT. ROPE.MAi 20517.000 ATR.MA1 -999.250 PSR.MA1 -999.250 DER.MAi 60.403 GR.MA1 -999.250 -999.250 DEPT. 20291.000 ATR.MA1 -999.250 PSR.MA1 -999.250 DER.MAI -999.250 ROPE.MAi -999.250 GR.MA1 100.444 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .008 SERVICE : FLIC VERSION : O01CO1 DATE : 98/04/ 6 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verification Listing Schlumberger Alaska Computing Center 6-APR-1998 15:07 PAGE: 38 **** TAPE TRAILER **** SERVICE NA~E : EDIT DATE · 98/04/ 6 ORIGIN · FLIC TAPE NAME : 98136 CONTINUATION # : 1 PREVIOUS TAPE : COFk4ENT · B.P. EXPLORATION, NIAKUK NK-41PB1, API #50-029-22778-70 **** REEL TRAILER **** SERVICE NAME : EDIT DATE · 98/04/ 6 ORIGIN : FLIC REEL NAME : 98136 CONTINUATION # : PREVIOUS REEL : COt4PIENT : B.P. EXPLORATION, NIAKUK NK-41PB1, API #50-029-22778-70
