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XHVZE I Pages NOT Scanned in this Well History File This page identifies those items that were not scanned during the initial scanning Project. They are available in the original file and viewable by direct inspection. File Number of Well History File PAGES TO DELETE Complete RESCAN [] Color items- Pages: [] GraYScale, halftones, pictures, graphs, charts - Pages: [] Poor Quality Original- Pages: [] Other- Pages: DIGITAL DATA n Diskettes, No. a Other, No/Type 'OVERSIZED .Logs of vadous kinds n Other COMMENT~: -... -. Scanned by: ~e,~,~ M~-~-D'ar~ ~o~Wl TO RE-SCAN Notes; • • gyro/data Gyrodata Incorporated 23000 Northwest Lake Dr. # ; Houston, TX 77095 'J '_.' (281) 213-6300 Fax: (281) 213 -6301 May 17, 2013 SCANNED ," z _ 2 2313 State of Alaska - AOGCC Attn: Christine Shartzer 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Re: Drill Site: 18, Well #18 -21A Prudhoe Bay, Alaska Enclosed, please find two (2) copies, and one (1) disk of the completed survey for the above referenced well. We would like to take this opportunity to thank you for using Gyrodata, and we look forward to serving you in the future. Sincerely, /` ° ) Rob Shoup Vice President, Special Projects RS:kr Serving the Worldwide Energy Industry with Precision Survey Instrumentation • • gyro/data Gyrodata krrsorporatd 23000 Northwest Lake Dr Houston, TX 77095 (281) 213 -6300 Fax: (2811 213-6301 SURVEY REPORT BP Exploration Drill Site: 18, Well: 18-21A Schlumberger Truck & Crane Prudhoe Bay, AK AK0113GCM 107 31 Jan 2013 )4))3 I 1UlOr w Serving the Worldwide �a�?!' � %:'!'�1- .S €:' 1'i ?� {t ?recision S'J: ".r•?`,t In,9'o')JfaG'1' ^.: �n A Gyrodata Directional Survey for BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK • Job Number: AK0213GCM107 Azimuth Correction: Run Date: 31 Jan 2013 Gyro: Bearings are Relative to True North Report Generated: 15 May 2013 02:42 Surveyor: Henry Drew Vertical Section Calculated from Well Head Location Calculation Method: MINIMUM CURVATURE Closure Calculated from Well Head Location Survey Latitude: 70.297034 deg. N Longitude: 148.443615 deg. W Horizontal Coordinates Calculated from Well Head Location 410 A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS 18 -21 A, 4-1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213 GCM 107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 0.00 0.00 0.00 0.00 0.00 0.0 0.0 0.00 N 0.00 E 0 - 8750' RATE GYROSCOPIC CONTINUOUS MULTISHOT SURVEY RUN INSIDE 4 -1/2" AND THEN 3 -1/2" TUBING ALL MEASURED DEPTHS AND COORDINATES REFERENCED TO ORIGINAL RKB ORIGINAL RKB= 50' ELEV OF TUBING HANGER FURNISHED BY BP= 21.82' FROM TUBING HANGER TO SWAB= 7' FROM SWAB TO GYRO = 7.5' ZERO ON SWAB @ 13.68' 100.00 0.36 244.17 0.36 100.00 0.3 244.2 0.14 S 0.28W 200.00 0.27 96.18 0.61 200.00 0.4 227.9 0.30 S 0.33W 300.00 0.31 98.46 0.04 300.00 0.4 154.9 0.36 S 0.17 E 400.00 0.34 101.10 0.03 400.00 0.9 122.3 0.46 S 0.73 E 500.00 0.20 31.64 0.33 499.99 1.2 108.4 0.37 S 1.11 E 600.00 0.22 57.66 0.10 599.99 1.4 95.0 0.12 S 1.37 E 700.00 0.24 69.25 0.05 699.99 1.7 88.1 0.06 N 1.72 E • 800.00 0.35 86.49 0.14 799.99 2.2 86.1 0.15 N 2.22 E 900.00 0.54 91.25 0.19 899.99 3.0 87.0 0.16 N 3.00 E 1000.00 1.96 115.47 1.48 999.96 5.0 96.7 0.59 S 5.02 E 1100.00 5.07 127.85 3.18 1099.76 10.8 111.9 4.03 S 10.05 E 1200.00 7.40 128.31 2.33 1199.17 21.5 120.0 10.74 S 18.59 E 1300.00 10.23 128.52 2.83 1297.97 36.7 123.5 20.26 S 30.60 E 1400.00 12.20 125.84 2.04 1396.06 56.1 124.7 31.98 S 46.11 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 1500.00 13.94 124.76 1.76 1493.47 78.7 124.9 45.04 S 64.57 E • 1600.00 16.87 123.34 2.95 1589.86 105.3 124.7 59.88 S 86.60 E 1700.00 17.88 126.46 1.37 1685.30 135.1 124.7 76.98 S 111.07 E 1800.00 20.37 128.35 2.57 1779.78 167.9 125.3 96.90 S 137.07 E 1900.00 24.07 128.05 3.70 1872.33 205.6 125.8 120.28 S 166.78 E 2000.00 25.85 127.90 1.78 1962.99 247.8 126.2 146.24 S 200.05 E 2100.00 28.07 125.63 2.45 2052.12 293.1 126.3 173.34 S 236.38 E 2200.00 30.70 124.66 2.67 2139.25 342.2 126.1 201.57 S 276.51 E 2300.00 31.47 125.62 0.92 2224.89 393.8 126.0 231.29 S 318.72 E 2400.00 31.43 126.22 0.32 2310.20 446.0 126.0 261.90 S 360.98 E 2500.00 31.50 126.60 0.21 2395.49 498.2 126.0 292.88 S 402.98 E 2600.00 31.69 127.01 0.29 2480.67 550.6 126.1 324.27 S 444.93 E 2700.00 31.89 127.44 0.30 2565.67 603.2 126.2 356.14 S 486.88 E 2800.00 32.01 127.83 0.24 2650.52 656.1 126.3 388.45 S 528.79 E • 2900.00 32.08 127.89 0.08 2735.28 709.2 126.4 421.02 S 570.68 E 3000.00 32.03 127.44 0.24 2820.04 762.2 126.5 453.45 S 612.69 E 3025.00 32.08 127.36 0.26 2841.22 775.5 126.5 461.51 S 623.23 E 3050.00 32.22 127.44 0.59 2862.39 788.8 126.5 469.59 S 633.80 E 3075.00 32.13 127.50 0.38 2883.55 802.1 126.6 477.69 S 644.36 E 3100.00 32.21 127.56 0.34 2904.71 815.4 126.6 485.80 S 654.92 E 3125.00 32.35 127.57 0.56 2925.85 828.8 126.6 493.93 S 665.50 E 3150.00 32.33 127.54 0.10 2946.97 842.1 126.6 502.09 S 676.10 E - A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. lb 3175.00 32.41 127.58 0.33 2968.09 855.5 126.6 510.25 S 686.72 E 3200.00 32.46 127.57 0.20 2989.19 868.9 126.6 518.42 S 697.34 E 3225.00 32.39 127.41 0.44 3010.29 - 882.3 126.6 526.58 S 707.98 E 3250.00 32.31 127.30 0.40 3031.41 895.7 126.7 534.70 S 718.61 E 3275.00 32.21 127.08 0.62 3052.55 909.1 126.7 542.76 S 729.24 E 3300.00 32.31 127.13 0.41 3073.69 922.4 126.7 550.81 S 739.88 E 3325.00 32.20 127.10 0.44 3094.83 935.7 126.7 558.86 S 750.52 E 3350.00 32.32 127.18 0.51 3115.97 949.1 126.7 566.92 S 761.16 E 3375.00 32.42 127.38 0.59 3137.09 962.5 126.7 575.03 S 771.81 E 3400.00 32.19 127.46 0.94 3158.22 975.8 126.7 583.15 S 782.42 E 3425.00 32.28 127.72 0.66 3179.37 989.2 126.7 591.28 S 792.99 E 3450.00 31.99 128.13 1.45 3200.54 1002.5 126.7 599.45 S 803.48 E 3475.00 31.93 128.31 0.45 3221.75 1015.7 126.7 607.64 S 813.87 E 3500.00 31.84 128.56 0.64 3242.97 1028.9 126.8 615.85 S 824.22 E • 3525.00 31.99 128.56 0.60 3264.20 1042.1 126.8 624.09 S 834.55 E 3550.00 32.16 128.51 0.69 3285.38 1055.4 126.8 632.36 S 844.94 E 3575.00 32.29 128.36 0.61 3306.53 1068.7 126.8 640.65 S 855.38 E 3600.00 32.48 128.20 0.83 3327.64 1082.1 126.8 648.94 S 865.89 E 3625.00 32.63 127.94 0.82 3348.71 1095.5 126.9 657.24 S 876.48 E 3650.00 32.79 127.84 0.68 3369.75 1109.0 126.9 665.53 S 887.14 E 3675.00 32.95 127.89 0.65 3390.74 1122.6 126.9 673.86 S 897.86 E 3700.00 32.92 127.92 0.14 3411.73 1136.2 126.9 682.21 S 908.58 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. II 3725.00 33.05 127.96 0.53 3432.70 1149.8 126.9 690.58 S 919.31 E 3750.00 33.03 128.06 0.23 3453.65 1163.4 126.9 698.97 S 930.05 E 3775.00 32.79 128.11 0.97 3474.64 1177.0 126.9 707.35 S 940.75 E 3800.00 32.72 128.27 0.45 3495.67 1190.5 127.0 715.72 S 951.38 E 3825.00 32.68 128.30 0.17 3516.71 1204.0 127.0 724.08 S 961.98 E 3850.00 32.79 128.28 0.44 3537.73 1217.5 127.0 732.46 S 972.59 E 3875.00 32.97 128.36 0.74 3558.73 1231.1 127.0 740.88 S 983.24 E 3900.00 32.58 128.21 1.59 3579.75 1244.6 127.0 749.26 S 993.86 E 3925.00 32.72 128.24 0.56 3600.80 1258.1 127.0 757.61 S 1004.46 E 3950.00 32.46 127.33 2.22 3621.86 1271.6 127.0 765.86 S 1015.10 E 3975.00 32.48 126.57 1.63 3642.96 1285.0 127.0 773.92 S 1025.82 E 4000.00 32.70 125.88 1.73 3664.02 1298.5 127.0 781.88 S 1036.69 E 4025.00 32.99 125.07 2.11 3685.02 1312.0 127.0 789.75 S 1047.73 E 4050.00 33.41 124.28 2.41 3705.94 1325.7 127.0 797.54 S 1058.99 E • 4075.00 33.61 123.78 1.36 3726.79 1339.5 127.0 805.26 S 1070.42 E 4100.00 33.72 123.61 0.58 3747.59 1353.3 126.9 812.95 S 1081.95 E 4125.00 33.85 123.56 0.53 3768.37 1367.2 126.9 820.64 S 1093.54 E 4150.00 33.93 123.56 0.32 3789.12 1381.1 126.9 828.35 S 1105.15 E 4175.00 33.95 123.29 0.61 3809.87 1395.1 126.8 836.03 S 1116.80 E 4200.00 33.74 122.63 1.69 3830.63 1409.0 126.8 843.61 S 1128.48 E 4225.00 33.69 122.45 0.45 3851.42 1422.8 126.7 851.07 S 1140.18 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 4250.00 33.72 122.38 0.20 3872.22 1436.6 126.7 858.51 S 1151.89 E • 4275.00 33.76 122.33 0.19 3893.01 1450.5 126.7 865.94 S 1163.62 E 4300.00 33.84 122.33 0.32 3913.79 1464.3 126.6 873.38 S 1175.37 E 4325.00 33.86 122.30 0.10 3934.55 1478.2 126.6 880.82 S 1187.14 E 4350.00 33.83 122.24 0.18 3955.31 1492.1 126.5 888.26 S 1198.92 E 4375.00 33.89 122.24 0.24 3976.07 1506.0 126.5 895.69 S 1210.70 E 4400.00 33.99 122.22 0.40 3996.81 1519.9 126.5 903.13 S 1222.50 E 4425.00 33.94 122.22 0.20 4017.55 1533.9 126.4 910.58 S 1234.32 E 4450.00 33.91 122.11 0.27 4038.29 1547.8 126.4 918.01 S 1246.13 E 4475.00 34.04 122.18 0.54 4059.02 1561.7 126.3 925.44 S 1257.96 E 4500.00 34.09 121.92 0.62 4079.73 1575.7 126.3 932.87 S 1269.83 E 4525.00 34.04 121.58 0.79 4100.44 1589.6 126.3 940.24 S 1281.74 E 4550.00 33.92 121.08 1.22 4121.17 1603.5 126.2 947.51 S 1293.67 E 4575.00 33.84 120.82 0.66 4141.93 1617.4 126.2 954.67 S 1305.63 E • 4600.00 33.89 120.82 0.20 4162.69 1631.3 126,1 961.81 S 1317.59 E 4625.00 33.91 120.90 0.20 4183.44 1645.2 126.1 968.96 S 1329.56 E 4650.00 33.85 120.99 0.31 4204.19 1659.1 126.0 976.13 S 1341.51 E 4675.00 34.05 121.01 0.80 4224.93 1673.0 126.0 983.32 S 1353.48 E 4700.00 33.67 121.03 1.52 4245.69 1686.8 126.0 990.50 S 1365.42 E 4725.00 33.74 121.04 0.28 4266.49 1700.7 125.9 997.65 S 1377.30 E 4750.00 33.85 121.04 0.44 4287.27 1714.5 125.9 1004.82 S 1389.22 E 4775.00 33.88 121.10 0.18 4308.02 1728.4 125.8 1012.01 S 1401.15 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 0 4800.00 33.95 121.08 0.28 4328.77 1742.3 125.8 1019.21 S 1413.10 E 4825.00 33.86 121.03 0.38 4349.52 1756.2 125.8 1026.41 S 1425.04 E 4850.00 33.77 121.06 0.37 4370.29 1770.1 125.7 1033.58 S 1436.96 E 4875.00 33.86 121.18 0.45 4391.06 1783.9 125.7 1040.77 S 1448.87 E 4900.00 33.94 121.21 0.33 4411.81 1797.8 125.7 1047.99 S 1460.80 E 4925.00 33.92 121.26 0.14 4432.56 1811.8 125.6 1055.23 S 1472.73 E 4950.00 33.72 121.32 0.81 4453.32 1825.6 125.6 1062.46 S 1484.62 E 4975.00 33.72 121.34 0.04 4474.12 1839.5 125.6 1069.67 S 1496.48 E 5000.00 33.76 121.35 0.16 4494.91 1853.3 125.5 1076.90 S 1508.34 E 5025.00 33.74 121.28 0.17 4515.69 1867.2 125.5 1084.12 S 1520.20 E 5050.00 33.72 121.35 0.17 4536.49 1881.0 125.5 1091.33 S 1532.06 E 5075.00 33.53 121.33 0.76 4557.30 1894.8 125.4 1098.53 S 1543.89 E 5100.00 33.63 121.31 0.40 4578.13 1908.6 125.4 1105.72 S 1555.70 E 5125.00 33.62 121.42 0.25 4598.95 1922.4 125.4 1112.92 S 1567.52 E • 5150.00 33.63 121.48 0.14 4619.77 1936.2 125.3 1120.15 S 1579.33 E 5175.00 33.39 121.61 1.00 4640.61 1950.0 125.3 1127.37 S 1591.09 E 5200.00 33.42 121.66 0.16 4661.48 1963.7 125.3 1134.59 S 1602.81 E 5225.00 33.25 121.83 0.78 4682.37 1977.5 125.3 1141.82 S 1614.49 E 5250.00 33.30 121.97 0.37 4703.27 1991.1 125.2 1149.06 S 1626.14 E 5275.00 33.24 122.23 0.62 4724.17 2004.8 125.2 1156.35 S 1637.76 E 5300.00 33.02 122.56 1.14 4745.11 2018.5 125.2 1163.67 S 1649.29 E 5325.00 32.33 122.94 2.88 4766.15 2032.0 125.2 1170.97 S 1660.64 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 0 5350.00 32.39 123.09 0.40 4787.27 2045.3 125.2 1178.26 S 1671.87 E 5375.00 32.37 123.18 0.21 4808.38 2058.7 125.2 1185.58 S 1683.08 E 5400.00 32.20 123.53 1.01 4829.52 2072.1 125.1 1192.92 S 1694.23 E 5425.00 32.12 123.67 0.44 4850.68 2085.4 125.1 1200.29 S 1705.31 E 5450.00 31.90 123.91 1.02 4871.88 2098.6 125.1 1207.66 S 1716.33 E 5475.00 32.06 124.05 0.71 4893.08 2111.9 125.1 1215.06 S 1727.31 E 5500.00 32.19 124.13 0.55 4914.26 2125.2 125.1 1222.51 S 1738.32 E 5525.00 32.19 124.38 0.53 4935.41 2138.5 125.1 1230.01 S 1749.32 E 5550.00 32.39 124.36 0.80 4956.55 2151.8 125.1 1237.55 S 1760.35 E 5575.00 32.58 124.31 0.77 4977.64 2165.2 125.1 1245.12 S 1771.44 E 5600.00 32.73 124.39 0.62 4998.68 2178.7 125.1 1252.73 S 1782.57 E 5625.00 32.94 124.37 0.84 5019.69 2192.3 125.1 1260.38 S 1793.76 E 5650.00 33.07 124.45 0.55 5040.66 2205.9 125.1 1268.08 S 1804.99 E 5675.00 32.70 124.69 1.57 5061.65 2219.5 125.1 1275.78 S 1816.17 E • 5700.00 32.73 124.74 0.16 5082.68 2233.0 125.1 1283.48 S 1827.28 E 5725.00 32.89 124.76 0.64 5103.70 2246.5 125.1 1291.20 S 1838.41 E 5750.00 33.06 124.80 0.69 5124.67 2260.1 125.1 1298.96 S 1849.58 E 5775.00 33.21 124.65 0.68 5145.60 2273.8 125.1 1306.74 S 1860.82 E 5800.00 33.27 124.53 0.36 5166.51 2287.5 125.1 1314.52 S 1872.10 E 5825.00 33.48 124.47 0.85 5187.39 2301.3 125.1 1322.31 S 1883.43 E 5850.00 33.68 124.38 0.82 5208.22 2315.1 125.1 1330.13 S 1894.84 E I A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS 18 -21 A, 4-1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 5875.00 33.86 124.50 0.77 5229.00 2329.0 125.1 1337.99 S 1906.30 E • 5900.00 34.06 124.37 0.85 5249.73 2343.0 125.1 1345.89 S 1917.82 E 5925.00 34.25 124.16 0.89 5270.42 2357.0 125.1 1353.79 S 1929.42 E 5950.00 34.43 123.69 1.28 5291.07 2371.1 125.0 1361.66 S 1941.12 E 5975.00 34.62 123.54 0.83 5311.66 2385.3 125.0 1369.50 S 1952.92 E 6000.00 34.81 123.56 0.76 5332.21 2399.5 125.0 1377.37 S 1964.78 E 6025.00 34.55 123.49 1.05 5352.77 2413.7 125.0 1385.23 S 1976.64 E 6050.00 34.47 123.32 0.50 5373.37 2427.9 125.0 1393.03 S 1988.47 E 6075.00 34.36 123.08 0.70 5394.00 2442.0 125.0 1400.76 S 2000.29 E 6100.00 34.44 122.89 0.54 5414.62 2456.1 125.0 1408.45 S 2012.14 E 6125.00 34.46 122.79 0.24 5435.24 2470.2 125.0 1416.12 S 2024.02 E 6150.00 34.45 122.90 0.25 5455.85 2484.4 125.0 1423.79 S 2035.90 E 6175.00 34.55 123.05 0.52 5476.46 2498.5 125.0 1431.50 S 2047.78 E 6200.00 34.73 123.11 0.73 5497.03 2512.7 124.9 1439.26 S 2059.69 E 6225.00 34.98 123.19 1.02 5517.54 2527.0 124.9 1447.07 S 2071.65 E 6250.00 35.21 123.24 0.93 5538.00 2541.4 124.9 1454.94 S 2083.67 E 6275.00 35.42 123.35 0.88 5558.39 2555.8 124.9 1462.88 S 2095.75 E 6300.00 35.67 123.40 1.01 5578.74 2570.3 124.9 1470.87 S 2107.89 E 6325.00 35.70 123.34 0.18 5599.04 2584.9 124.9 1478.89 S 2120.07 E 6350.00 35.74 123.32 0.17 5619.34 2599.5 124.9 1486.91 S 2132.26 E 6375.00 35.59 123.06 0.85 5639.65 2614.1 124.9 1494.89 S 2144.46 E 6400.00 35.21 122.57 1.90 5660.03 2628.6 124.9 1502.74 S 2156.63 E - , A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS 18 -21 A, 4-1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. • 6425.00 35.09 122.14 1.10 5680.47 2642.9 124.9 1510.44 S 2168.79 E 6450.00 35.18 122.02 0.45 5700.91 2657.3 124.8 1518.08 S 2180.98 E 6475.00 35.31 122.02 0.52 5721.33 2671.7 124.8 1525.73 S 2193.21 E 6500.00 35.34 121.98 0.15 5741.73 2686.2 124.8 1533.39 S 2205.47 E 6525.00 35.54 121.95 0.80 5762.10 2700.6 124.8 1541.07 S 2217.77 E 6550.00 35.76 122.00 0.89 5782.41 2715.2 124.8 1548.78 S 2230.13 E 6575.00 35.97 121.88 0.89 5802.67 2729.8 124.8 1556.53 S 2242.56 E 6600.00 36.22 121.96 1.02 5822.87 2744.5 124.7 1564.32 S 2255.06 E 6625.00 36.39 122.04 0.71 5843.02 2759.3 124.7 1572.16 S 2267.61 E 6650.00 36.31 122.16 0.43 5863.15 2774.1 124.7 1580.04 S 2280.17 E 6675.00 35.84 122.10 1.89 5883.36 2788.8 124.7 1587.87 S 2292.63 E 6700.00 35.58 122.09 1.04 5903.66 2803.4 124.7 1595.62 S 2305.00 E 6725.00 35.48 122.13 0.41 5924.01 2817.9 124.7 1603.34 S 2317.30 E • 6750.00 35.55 122.21 0.34 5944.35 2832.4 124.7 1611.08 S 2329.59 E 6775.00 35.67 122.20 0.48 5964.68 2847.0 124.7 1618.83 S 2341.91 E 6800.00 35.77 122.33 0.50 5984.98 2861.5 124.6 1626.62 S 2354.25 E 6825.00 35.91 122.39 0.58 6005.24 2876.2 124.6 1634.46 S 2366.62 E 6850.00 35.97 122.56 0.47 6025.48 2890.8 124.6 1642.34 S 2379.00 E 6875.00 36.00 122.58 0.13 6045.71 2905.5 124.6 1650.25 S 2391.38 E 6900.00 35.85 122.77 0.75 6065.96 2920.2 124.6 1658.16 S 2403.72 E 6925.00 35.81 122.89 0.32 6086.23 2934.8 124.6 1666.10 S 2416.02 E 6950.00 35.87 123.04 0.43 6106.49 2949.4 124.6 1674.06 S 2428.30 E ■11 A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. III 6975.00 35.70 123.21 0.79 6126.77 2964.0 124.6 1682.05 S 2440.54 E 7000.00 35.62 123.30 0.38 6147.09 2978.6 124.6 1690.04 S 2452.73 E 7025.00 35.60 123.35 0.14 6167.41 2993.2 124.6 1698.04 S 2464.90 E 7050.00 35.72 123.36 0.48 6187.72 3007.7 124.6 1706.05 S 2477.07 E 7075.00 35.83 123.32 0.45 6208.01 3022.4 124.6 1714.09 S 2489.28 E 7100.00 35.66 123.22 0.72 6228.30 3037.0 124.5 1722.10 S 2501.49 E 7125.00 35.37 123.09 1.20 6248.65 3051.5 124.5 1730.04 S 2513.65 E 7150.00 34.73 122.73 2.69 6269.11 3065.8 124.5 1737.84 S 2525.70 E 7175.00 34.57 122.54 0.77 6289.68 3080.0 124.5 1745.51 S 2537.67 E 7200.00 34.49 122.50 0.33 6310.27 3094.2 124.5 1753.13 S 2549.62 E 7225.00 34.40 122.42 0.40 6330.89 3108.3 124.5 1760.72 S 2561.55 E 7250.00 34.18 122.29 0.93 6351.55 3122.4 124.5 1768.25 S 2573.45 E 7275.00 34.24 122.25 0.26 6372.22 3136.4 124.5 1775.76 S 2585.33 E 7300.00 34.47 122.21 0.92 6392.86 3150.5 124.5 1783.28 S 2597.27 E • 7325.00 34.56 122.25 0.37 6413.46 3164.7 124.5 1790.84 S 2609.25 E 7350.00 34.36 122.24 0.80 6434.07 3178.8 124.5 1798.38 S 2621.21 E 7375.00 34.34 122.18 0.16 6454.71 3192.9 124.4 1805.90 S 2633.15 E 7400.00 34.22 122.02 0.60 6475.37 3207.0 124.4 1813.39 S 2645.08 E 7425.00 34.25 121.80 0.51 6496.04 3221.0 124.4 1820.82 S 2657.02 E 7450.00 34.16 121.48 0.80 6516.71 3235.1 124.4 1828.19 S 2668.98 E 7475.00 33.91 120.74 1.94 6537.43 3249.1 124.4 1835.42 S 2680.96 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 7500.00 33.81 120.47 0.72 6558.19 3262.9 124.4 1842.51 S 2692.95 E 7525.00 33.83 120.40 0.18 6578.96 3276.8 124.4 1849.56 S 2704.95 E 7550.00 33.84 120.38 0.06 6599.73 3290.7 124.3 1856.60 S 2716.96 E 7575.00 33.68 120.34 0.65 6620.51 3304.6 124.3 1863.63 S 2728.94 E 7600.00 33.70 120.36 0.09 6641.31 3318.4 124.3 1870.63 S 2740.91 E 7625.00 33.54 120.41 0.65 6662.13 3332.2 124.3 1877.63 S 2752.85 E 7650.00 33.57 120.44 0.14 6682.96 3346.0 124.3 1884.63 S 2764.77 E 7675.00 33.63 120.45 0.24 6703.79 3359.8 124.3 1891.64 S 2776.69 E 7700.00 33.59 120.56 0.29 6724.61 3373.6 124.2 1898.67 S 2788.62 E 7725.00 33.48 120.63 0.47 6745.45 3387.4 124.2 1905.70 S 2800.51 E 7750.00 33.42 120.81 0.46 6766.31 3401.2 124.2 1912.74 S 2812.35 E 7775.00 33.48 120.89 0.30 6787.16 3414.9 124.2 1919.80 S 2824.18 E 7800.00 33.50 121.03 0.32 6808.01 3428.7 124.2 1926.90 S 2836.01 E 7825.00 33.46 121.22 0.45 6828.87 3442.5 124.2 1934.03 S 2847.82 E • 7850.00 33.42 121.35 0.33 6849.73 3456.2 124.2 1941.18 S 2859.59 E 7875.00 33.39 121.45 0.25 6870.60 3470.0 124.2 1948.35 S 2871.34 E 7900.00 33.14 121.58 1.04 6891.50 3483.7 124.1 1955.52 S 2883.03 E 7925.00 33.17 121.70 0.29 6912.43 3497.3 124.1 1962.69 S 2894.67 E 7950.00 33.11 121.81 0.34 6933.36 3511.0 124.1 1969.89 S 2906.29 E 7975.00 32.88 122.10 1.12 6954.33 3524.6 124.1 1977.09 S 2917.84 E 8000.00 32.36 122.33 2.14 6975.39 3538.1 124.1 1984.28 S 2929.24 E 8025.00 32.13 122.52 1.01 6996.53 3551.4 124.1 1991.43 S 2940.50 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 8050.00 32.11 122.60 0.19 7017.71 3564.7 124.1 1998.58 S 2951.71 E • 8075.00 31.98 122.73 0.59 7038.90 3577.9 124.1 2005.74 S 2962.87 E 8100.00 31.82 122.83 0.67 7060.12 3591.1 124.1 2012.89 S 2973.98 E 8125.00 31.91 122.92 0.41 7081.35 3604.3 124.1 2020.06 S 2985.06 E 8150.00 32.05 122.88 0.57 7102.56 3617.6 124.1 2027.25 S 2996.18 E 8175.00 32.40 122.84 1.40 7123.71 3630.9 124.1 2034.48 S 3007.38 E 8200.00 32.67 122.93 1.10 7144.79 3644.3 124.1 2041.78 S 3018.67 E 8225.00 32.89 122.87 0.89 7165.80 3657.9 124.1 2049.13 S 3030.03 E 8250.00 33.02 122.93 0.54 7186.78 3671.5 124.1 2056.52 S 3041.45 E 8275.00 33.16 123.01 0.59 7207.73 3685.1 124.1 2063.95 S 3052.90 E 8300.00 33.26 123.05 0.41 7228.64 3698.8 124.1 2071.41 S 3064.38 E 8325.00 33.45 123.07 0.76 7249.53 3712.6 124.1 2078.91 S 3075.90 E 8350.00 33.79 123.06 1.36 7270.34 3726.4 124.0 2086.46 S 3087.50 E • 8375.00 34.17 122.94 1.54 7291.08 3740.4 124.0 2094.07 S 3099.22 E 8400.00 34.80 122.56 2.66 7311.68 3754.5 124.0 2101.73 S 3111.13 E 8425.00 35.43 122.28 2.60 7332.13 3768.9 124.0 2109.44 S 3123.27 E 8450.00 35.73 122.01 1.35 7352.46 3783.4 124.0 2117.18 S 3135.58 E 8475.00 36.11 122.03 1.52 7372.71 3798.1 124.0 2124.96 S 3148.02 E 8500.00 36.38 122.01 1.08 7392.87 3812.9 124.0 2132.79 S 3160.55 E 8525.00 36.33 122.04 0.21 7413.01 3827.7 124.0 2140.65 S 3173.11 E 8550.00 36.25 122.14 0.40 7433.16 3842.5 124.0 2148.51 S 3185.65 E 8575.00 35.85 122.56 1.88 7453.37 3857.2 124.0 2156.38 S 3198.08 E A Gyrodata Directional Survey BP ALASKA Lease: PRUDHOE BAY Well: DS18 -21A, 4 -1/2" TUBING Location: WELLHEAD, NORTH SLOPE BOROUGH, AK Job Number: AK0213GCM107 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. • 8600.00 35.64 122.99 1.31 7473.66 3871.8 124.0 2164.29 S 3210.36 E 8625.00 35.59 123.30 0.75 7493.98 3886.3 124.0 2172.25 S 3222.55 E 8650.00 35.67 123.62 0.81 7514.30 3900.9 124.0 2180.28 S 3234.70 E 8675.00 35.91 123.88 1.14 7534.58 3915.5 124.0 2188.40 S 3246.86 E 8700.00 36.36 123.90 1.80 7554.77 3930.2 124.0 2196.62 S 3259.09 E 8725.00 36.92 124.32 2.45 7574.83 3945.2 124.0 2204.99 S 3271.45 E 8750.00 37.92 124.81 4.17 7594.69 3960.4 124.0 2213.61 S 3283.95 E Final Station Closure: Distance: 3960.36 ft Az: 123.98 deg. • BP ALASKA 15 May 14:56 Presented Survey Well: PRUDHOE BAY DS18 -21A 4 -1/2" TUBING Gyrodata Location: WELLHEAD, NORTH SLOPE BOROUGH, AK AK0213GCM107 DEFINITIVE BOTTOM HOLE LOCATED 35 Mb: __8750-00___ 30 • 25 z 0 - ill z 20- :, U 15 • 10 -- 5 0 I I I I I I 1 1 1 1 I I I ' ' I I I I I I I I I I I 1 1 1 1 I l I l I I I I I I I I I I 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 MEASURED DEPTH (ft) BP ALASKA 15 May 14:57 Presented Survey Well: PRUDHOE BAY DS18-21A 4-1/2" TUBING Gyrodata Location: WELLHEAD, NORTH SLOPE BOROUGH, AK AK0213GCM107 DEFINITIVE 240 220 200 • 180 ----- ----- 160 = I- 140 N _ 120- B.O_TTOMH_OLE LOCATED MD: 8750.00 100 de • 80 60 40 !III I I 111 1111 1111 1111 1111 1111 1111 I I I I I I 1 I 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 MEASURED DEPTH (ft) BP ALASKA 15 May 14:57 Presented Survey Well: PRUDHOE BAY DS18 -21A 4-1/2" TUBING Gyrodata Location: WELLHEAD, NORTH SLOPE BOROUGH, AK AK0213GCM107 DEFINITIVE - BOTTOM HOLE LOCATED MD: 8750. -00- __ 7000 6000 --- 5000 a w - 4000 Q U - w > 3000 - • 2000 -- 1000 0_- / ////,// 1 1 1 1 1 1 1 1 1 1 1 I I I I I l l l 1 1 1 1 I I I I 1 1 1 1 I I I l 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 MEASURED DEPTH (ft) BP ALASKA 15 May 14:57 Presented Survey Well: PRUDHOE BAY DS18 -21A 4 -1/2" TUBING Gyrodata ` Location: WELLHEAD, NORTH SLOPE BOROUGH, AK AK0213GCM107 DEFINITIVE BOTTOM HOLE 4.0 LOCATED MD: 8750.00 3.5 I , 1 • 3.0 • o -- o • t rn .8 2.5 4 r • w - w 2.0 v -) - • • C7 • • w J L9 __ p 1.5 • • • • 4 til till • 1 0.5 4 kirsvii r • A • , 11 1 0.0_ , „ I I I I I I I „, „ I I 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 MEASURED DEPTH (ft) BP ALASKA 15 May 14:57 Presented Survey Well: PRUDHOE BAY DS18-21A 4-1/2" TUBING Gyrodata ' Location: WELLHEAD, NORTH SLOPE BOROUGH, AK AK0213GCM107 DEFINITIVE 0 -200 -400 -600 - -800 c.9 -1000- z -1200 0 -1400 -1600 -1800 BOTTOM HO -2000- LOCATED MD: 8750.01 -2200 - I I I I I I I I I I I I I 0 500 1000 1500 2000 2500 3000 EASTING (ft) Survey QC - RGS -CT Specification Sheet • I SURVEY QUALITY CONTROL - SPECIFICATION DATA PRE -JOB CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg /min) 64 270.72 - 913.01 - 0.00022831 -1.66 63 270.72 - 907.09 - 0.00022683 -2.04 62 223.96 -1498.64 - 0.00037489 -6.98 61 223.96 - 1498.92 - 0.00037496 -12.02 60 45.15 -1476.04 - 0.00036929 -3.63 59 45.15 - 1471.78 - 0.00036823 -3.39 58 0.89 - 1582.98 - 0.00039368 -7.55 57 0.89 - 1591.47 - 0.00039578 -6.86 56 330.54 - 1221.56 - 0.00030334 -6.68 55 330.54 - 1216.73 - 0.00030214 -7.19 54 299.81 -899.01 - 0.00022388 -4.83 53 299.81 - 899.10 - 0.00022390 -3.65 52 270.45 - 951.95 - 0.00023804 -0.62 51 270.45 - 950.21 - 0.00023760' -0.28 50 240.63 - 1319.13 - 0.00033033 1.39 49 240.63 - 1319.11 - 0.00033033 1.52 48 211.04 - 1649.35 - 0.00041190 1.86 47 211.04 - 1650.80 - 0.00041226 3.82 46 181.63 - 1642.63 - 0.00040850 3.42 45 181.63 - 1641.91 - 0.00040832 3.07 44 151.24 - 1267.20 - 0.00031464 0.79 43 151.24 - 1264.14 - 0.00031389 0.78 42 120.85 - 927.90 - 0.00023103 1.43 41 120.85 - 923.94 - 0.00023004 -0.26 40 90.88 - 963.06 -0.00024080 0.01 39 90.88 - 959.75 - 0.00023997 0.25 38 60.20 - 1348.07 - 0.00033756 -2.76 37 60.20 - 1346.36 - 0.00033713 -2.13 36 30.26 - 1669.77 - 0.00041694 -4.82 35 30.26 - 1667.54 - 0.00041639 -5.48 34 0.76 - 1613.24 - 0.00040117 -24.13 33 0.76 - 1618.22 - 0.00040240 -21.25 32 271.10 - 980.69 - 0.00024519 -6.85 31 271.10 - 977.79 - 0.00024447 -6.09 30 224.93 -1530.60 - 0.00038289 -10.69 29 224.93 - 1530.96 - 0.00038298 -13.24 28 44.51 - 1526.26 - 0.00038180 -6.84 27 44.51 - 1524.71 - 0.00038141 -6.79 26 359.83 - 1623.69 -0.00040371 -8.56 25 359.83 - 1625.94 - 0.00040427 -9.89 24 330.44 - 1264.94 - 0.00031408 -12.34 23 330.44 - 1256.05 - 0.00031188 -14.37 22 301.06 - 961.60 - 0.00023940 -8.55 21 301.06 - 960.28 - 0.00023907 -10.70 20 271.21 - 1003.06 - 0.00025077 -4.75 19 271.21 - 997.45 - 0.00024937 -4.95 18 241.09 - 1354.32 - 0.00033912 -1.54 17 241.09 - 1356.42 - 0.00033964 -1.80 16 209.94 - 1691.55 - 0.00042234 -0.96 15 209.94 - 1686.66 - 0.00042113 -3.80 14 180.23 - 1650.29 - 0.00041032 -0.78 13 180.23 - 1646.46 - 0.00040937 -2.04 12 150.08 - 1283.34 - 0.00031864 -5.20 11 150.08 - 1273.59 - 0.00031623 -6.50 10 119.33 - 981.55 - 0.00024441 -5.67 9 119.33 - 983.13 - 0.00024480 -6.52 8 89.55 - 1024.95 - 0.00025629 -6.77 7 89.55 - 1019.55 - 0.00025494 -7.99 6 60.19 - 1381.14 - 0.00034582 -5.65 5 60.19 - 1372.22 - 0.00034359 -8.18 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 1 of 11 AK0213GCM107 II • Survey QC - RGS -CT Specification Sheet . • „ + . 4 30.47 - 1704.26 - 0.00042554 -9.04 3 30.47 - 1702.36 - 0.00042506 -11.51 2 0.08 - 1675.67 - 0.00041661 -11.79 1 0.08 - 1673.11 - 0.00041597 -12.16 MBO = -0.61 Gravity Error = - 1329.61 Scale Factor Uncertainty = - 0.00033165 Rate Error = -5.35 POST - 30B CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg /min) 15202 269.91 - 3026.92 - 0.00075382 -7.46 15201 269.91 - 3017.08 - 0.00075139 -9.25 15200 225.65 -1577.92 - 0.00039472 -10.55 15199 225.65 - 1559.76 - 0.00039018 -12.04 15198 45.78 - 1559.89 - 0.00039022 -0.93 15197 45.78 - 1557.64 - 0.00038966 -2.45 15196 1.24 397.19 0.00009917 -3.44 15195 1.24 405.10 0.00010115 -4.35 15194 330.06 - 243.34 - 0.00006054 -5.99 15193 330.06 - 234.34 - 0.00005831 -7.50 15192 300.73 - 1900.54 - 0.00047229 -7.43 15191 300.73 - 1897.93 - 0.00047164 -11.79 15190 271.09 - 2952.05 - 0.00073517 -3.51 15189 271.09 - 2940.35 - 0.00073228 -5.38 15188 238.54 - 2231.64 - 0.00055782 -0.17 15187 238.54 - 2229.16 - 0.00055720 -1.28 15186 209.27 - 576.98 - 0.00014437 0.94 15185 209.27 - 573.47 - 0.00014349 2.03 15184 180.07 433.55 0.00010825 -0.79 15183 180.07 436.94 0.00010909 -0.73 15182 149.51 - 207.82 -0.00005171 -6.19 15181 149.51 - 202.34 - 0.00005035 -5.20 15180 119.46 - 1880.15 - 0.00046732 -5.40 15179 119.46 - 1870.07 - 0.00046482 -6.89 15178 89.64 - 2842.18 - 0.00070810 -1.03 15177 89.64 - 2835.91 - 0.00070654 -1.17 15176 60.28 - 2205.19 - 0.00055124 0.82 15175 60.28 - 2194.95 - 0.00054869 0.29 15174 29.43 - 529.70 - 0.00013255 -0.67 15173 29.43 - 526.92 - 0.00013186 -1.75 15172 0.13 454.88 0.00011358 -17.55 15171 270.31 - 2810.16 - 0.00070010 -8.40 15170 270.31 - 2803.00 - 0.00069833 -10.67 15169 223.75 - 1359.56 - 0.00034019 -11.72 15168 223.75 - 1347.27 - 0.00033712 -20.25 15167 45.25 - 1406.60 - 0.00035197 -0.50 15166 45.25 - 1398.27 - 0.00034989 0.17 15165 358.75 458.92 0.00011457 -2.98 15164 358.75 458.84 0.00011455 -1.19 15163 329.50 - 180.94 - 0.00004502 -13.66 15162 329.50 - 172.41 - 0.00004290 -13.88 15161 299.96 - 1777.28 - 0.00044181 0.08 15160 299.96 - 1780.93 - 0.00044271 -2.94 15159 269.15 - 2787.91 - 0.00069470 -2.63 15158 269.15 - 2782.58 - 0.00069338 -4.31 15157 239.77 - 2156.38 - 0.00053909 0.90 15156 239.77 - 2146.99 - 0.00053675 0.48 15155 208.50 - 473.16 - 0.00011840 1.68 15154 208.50 - 470.16 - 0.00011765 0.02 15153 180.26 463.79 0.00011580 -1.78 15152 180.26 470.60 0.00011751 -0.79 15151 149.75 - 155.44 - 0.00003868 -4.08 15150 149.75 - 152.53 - 0.00003796 -4.50 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 2 of 11 AK0213GCM107 • • • • • Survey QC - RGS -CT Specification Sheet gyr /data 15149 118.14 - 1847.91 - 0.00045941 -5.98 15148 118.14 - 1848.77 - 0.00045963 -7.11 15147 90.41 - 2750.70 - 0.00068536 -3.09 15146 90.41 - 2742.86 - 0.00068342 -3.34 15145 61.05 - 2183.33 - 0.00054580 -0.01 15144 61.05 - 2172.79 - 0.00054317 -0.00 15143 31.34 - 614.26 - 0.00015373 1.03 15142 31.34 - 608.50 - 0.00015229 0.14 15141 0.58 454.70 0.00011354 -1.92 MBO = -0.70 Gravity Error = - 1288.23 Scale Factor Uncertainty = - 0.00032127 Rate Error = -4.16 INITIALISATION Gyro Compass Reading / Station Raw Inclination Raw Azimuth Abs (ER.,e.: -ERm ) 77 10.21 129.26 0.0775 78 10.21 129.28 0.0739 79 10.21 129.30 0.0728 • 80 10.21 129.26 0.0727 81 10.21 129.30 0.0728 82 10.21 129.27 0.0709 Average 10.21 129.28 0.0734 Tolerance on Average* 0.0821 Standard Deviation 0.00 0.02 0.0022 Tolerance on St. Dev. ** 0.1 0.2 0.0381 Advanced Initialisation Azimuth Advanced Initialisation Standard Deviation Tolerance = TBA * Tolerance on Average of earth horizontal rate difference is given by (1 /Cos1) * J[(CosA *Sins *0.1) +0.08 0 /hr ** Tolerance on Standard Deviation of earth horizontal rate difference tolerance is given by (1 /CosI) *J[(CosA *SinI *0.1) /(n -1))) ° /hr DRIFT TUNES Drift Tune Ending Ending Ending Ending Residual Gx Bias Residual Gy Bias Number Time Depth Indination Azimuth Start End Start End 1 485.00 1525.50 _ 14.48 124.36 0.000 -0.001 -0.001 0.001 2 761.92 2251.15 31.18 125.14 -0.001 -0.001 -0.003 0.002 3 1424.67 4100.34 33.64 123.87 -0.002 0.002 0.000 -0.000 4 1401.88 6001.63 34.73 123.90 -0.002 0.004 -0.001 0.002 5 1410.87 7914.39 33.25 122.19 _ -0.001 0.001 -0.002 0.000 6 973.19 8750.02 37.95 125.23 -0.002 0.002 0.003 -0.002 7 849.14 7913.28 33.14 122.01 0.003 -0.003 ,-0.002 0.002 8 1513.20 6001.39 34.64 123.96 0.006 -0.006 -0.002 0.001 + 9 1520.24 4100.68 34.06 124.34 0.006 -0.006 0.001 -0.001 10 1032.24 3100.09 32.50 128.14 0.000 -0.000 -0.003 0.003 11 954.85 2250.13 31.58 126.11 0.002 -0.002 0.001 -0.001 12 848.66 1524.86 _ 14.91 125.03 0.000 -0.001 -0.003 0.002 13 517.67 1300.04 10.74 129.29 0.001 -0.001 0.000 -0.000 Average 0.001 -0.001 -0.001 0.001 Standard Deviation 0.003 0.003 0.002 0.002 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 3 of 11 AK0213GCM107 • • Survey QC - RGS -CT Specification Sheet gYrOidata I Tolerance for both the Average and the Standard Deviation 1 0.033 ° /hr 1 0.033 ° /hr 1 0.033 ° /hr 1 0.033 ° /hr I INCLINATION AND AZIMUTH INRUN AND OUTRUN COMPARISON I Depth I Corrected Indination Corrected Azimuth Inrun * I Outrun * I Difference Inrun * I Outrun * I Difference 100.00 0.36 0.34 0.02 243.73 258.22 -14.49 200.00 0.27 0.34 -0.07 96.63 231.16 - 134.53 300.00 0.31 0.29 0.02 98.92 216.25 - 117.33 400.00 0.34 0.25 0.09 101.58 222.37 - 120.79 500.00 0.20 0.21 -0.01 31.55 231.84 159.72 600.00 0.22 0.23 -0.01 57.70 221.89 - 164.19 700.00 0.24 0.26 -0.03 69.40 208.92 - 139.52 800.00 0.35 0.42 -0.07 86.78 177.68 -90.90 900.00 0.54 0.59 -0.05 91.51 143.65 -52.14 1000.00 1.96 1.93 0.03 116.05 122.78 -6.73 1100.00 5.07 4.97 0.10 128.49 128.13 0.36 1200.00 7.40 7.46 -0.06 128.89 129.20 -0.31 1300.00 10.21 10.05 0.15 128.52 129.28 -0.76 1325.00 10.67 10.71 -0.04 128.04 129.09 -1.05 1350.00 11.33 11.41 -0.08 127.06 128.10 -1.04 1375.00 11.89 12.00 -0.11 126.39 127.34 -0.95 1400.00 12.14 12.24 -0.10 125.78 126.79 -1.01 1425.00 12.78 12.91 -0.13 125.48 126.40 -0.92 1450.00 12.93 12.99 -0.05 125.29 126.18 -0.89 1475.00 13.34 13.44 -0.10 124.86 126.09 -1.23 1500.00 13.93 13.94 -0.01 124.71 125.69 -0.98 1525.00 14.50 14.56 -0.06 124.34 125.08 -0.73 1550.00 15.77 15.75 0.02 123.54 124.37 -0.83 1575.00 16.26 16.26 0.00 123.02 124.08 -1.07 1600.00 16.86 16.87 -0.01 123.24 124.31 -1.07 1625.00 17.04 17.00 0.04 123.70 124.58 -0.88 1650.00 17.39 17.36 0.03 124.19 125.28 -1.09 1675.00 17.70 17.67 0.04 125.51 126.49 -0.98 1700.00 17.90 17.86 0.04 126.40 127.40 -1.00 1725.00 18.38 18.34 0.04 127.47 128.49 -1.02 1750.00 18.67 18.62 0.05 127.93 128.81 -0.89 1775.00 19.50 19.45 0.04 128.46 129.29 -0.82 1800.00 20.41 20.33 0.07 128.39 129.20 -0.81 1825.00 21.16 21.13 0.03 128.16 129.08 -0.93 1850.00 22.36 22.33 0.03 128.11 128.88 -0.77 1875.00 23.06 23.05 0.01 127.98 128.81 -0.83 1900.00 24.07 24.06 0.01 128.13 128.83 -0.70 1925.00 24.63 24.63 -0.00 128.19 128.93 -0.74 1950.00 25.12 25.13 -0.01 128.19 128.94 -0.75 1975.00 25.35 25.37 -0.01 128.24 128.96 -0.72 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 4 of 11 AK0213GCM107 0 • Survey QC - RGS -CT Specification Sheet 2000.00 25.84 25.85 -0.01 127.96 128.72 -0.75 2025.00 26.19 26.19 -0.00 127.80 128.52 -0.72 1 2050.00 26.73 26.73 -0.01 127.28 128.06 -0.78 2075.00 27.40 27.41 -0.01 126.48 127.26 -0.78 2100.00 28.07 28.07 0.00 125.67 126.47 -0.80 2125.00 28.75 28.74 0.00 125.03 125.80 -0.77 2150.00 29.46 29.47 -0.01 124.70 125.38 -0.68 2175.00 30.10 30.11 -0.01 124.70 125.40 -0.70 2200.00 30.68 30.70 -0.02 124.73 125.47 -0.74 2225.00 31.08 31.11 -0.02 125.02 125.76 -0.74 2250.00 31.27 31.28 -0.01 125.11 125.86 -0.75 2275.00 31.41 31.44 -0.03 125.50 125.98 -0.48 2300.00 31.45 31.49 -0.05 125.72 126.40 -0.67 2325.00 31.39 31.43 -0.04 126.05 126.78 -0.73 2350.00 31.40 31.45 -0.05 126.03 126.56 -0.53 2375.00 31.50 31.52 -0.03 126.24 126.93 -0.69 2400.00 31.40 31.45 -0.05 126.41 126.90 -0.50 2425.00 31.51 31.53 -0.02 126.45 127.16 -0.71 2450.00 31.49 31.49 -0.01 126.47 127.19 -0.72 2475.00 31.36 31.40 -0.04 126.62 127.15 -0.53 2500.00 31.49 31.49 -0.00 126.67 127.41 -0.74 2525.00 31.54 31.54 -0.00 126.77 127.47 -0.70 2550.00 31.58 31.62 -0.03 126.83 127.40 -0.57 2575.00 31.62 31.61 0.01 127.04 127.77 -0.73 2600.00 31.69 31.67 0.02 127.10 127.79 -0.69 2625.00 31.82 31.81 0.01 127.17 127.87 -0.70 2650.00 31.73 31.72 0.01 127.36 127.97 -0.61 2675.00 31.80 31.80 -0.00 127.42 127.96 -0.54 2700.00 31.90 31.87 0.03 127.50 128.26 -0.76 2725.00 31.80 31.80 0.00 127.73 128.30 -0.58 2750.00 31.91 31.88 0.03 127.85 128.52 -0.67 2775.00 31.98 31.95 0.03 127.95 128.56 -0.61 2800.00 32.01 32.01 0.01 127.91 128.62 -0.70 2825.00 32.10 32.06 0.04 128.04 128.66 -0.62 2850.00 32.09 32.07 0.03 128.14 128.69 -0.56 2875.00 32.22 32.16 0.06 128.10 128.78 -0.68 2900.00 32.10 32.06 0.04 128.05 128.61 -0.56 2925.00 32.16 32.12 0.04 128.20 128.57 -0.37 2950.00 32.03 31.97 0.06 127.86 128.22 -0.36 2975.00 31.96 31.91 0.04 127.76 128.10 -0.33 3000.00 32.07 31.99 0.08 127.59 128.16 -0.56 3025.00 32.12 32.05 0.07 127.58 128.02 -0.45 3050.00 32.26 32.18 0.08 127.60 128.16 -0.56 3075.00 32.16 32.11 0.05 127.72 128.16 -0.44 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 5 Of 11 AK02136C4107 • • Survey QC - RGS -CT Specification Sheet girrOidata 3100.00 32.24 32.19 0.05 127.75 128.25 -0.50 3125.00 32.37 32.33 0.04 127.76 128.26 -0.50 3150.00 32.34 32.33 0.01 127.78 128.18 -0.40 3175.00 32.42 32.40 0.02 127.84 128.21 -0.37 3200.00 32.47 32.45 0.02 127.84 128.17 -0.33 3225.00 32.39 32.41 -0.02 127.70 128.01 -0.31 3250.00 32.34 32.28 0.06 127.47 128.01 -0.53 3275.00 32.24 32.19 0.05 127.35 127.69 -0.34 3300.00 32.34 32.27 0.06 127.31 127.83 -0.51 3325.00 32.24 32.18 0.05 127.40 127.67 -0.27 3350.00 32.34 32.30 0.04 127.49 127.74 -0.25 3375.00 32.45 32.38 0.07 127.57 128.07 -0.51 3400.00 32.21 32.19 0.02 127.75 128.04 -0.29 3425.00 32.30 32.27 0.04 127.99 128.32 -0.33 3450.00 32.00 31.98 0.03 128.44 128.69 -0.25 3475.00 31.93 31.94 -0.01 128.65 128.85 - 0.20 I I 3500.00 31.87 31.81 0.06 128.77 129.23 -0.46 3525.00 32.02 31.96 0.06 128.75 129.24 -0.49 3550.00 32.19 32.15 0.04 128.79 129.12 -0.33 3575.00 32.33 32.25 0.08 128.57 129.04 -0.47 3600.00 32.53 32.44 0.09 128.39 128.89 -0.50 3625.00 32.67 32.59 0.08 128.19 128.56 -0.37 3650.00 32.84 32.75 0.09 128.15 128.41 -0.26 3675.00 32.98 32.93 0.05 128.18 128.48 -0.31 3700.00 32.95 32.89 0.06 128.19 128.53 -0.33 3725.00 33.07 33.03 0.05 128.24 128.56 -0.32 3750.00 33.06 33.00 0.06 128.32 128.68 -0.36 3775.00 32.81 32.79 0.02 128.48 128.62 -0.14 3800.00 32.74 32.71 0.03 128.60 128.82 -0.22 3825.00 32.69 32.67 0.02 128.62 128.85 -0.23 3850.00 32.82 32.77 0.05 128.55 128.88 -0.32 3875.00 32.99 32.94 0.05 128.60 128.99 -0.39 3900.00 32.58 32.59 -0.01 128.53 128.77 -0.23 3925.00 32.72 32.72 0.00 128.52 128.83 -0.31 3950.00 32.46 32.48 -0.02 127.67 127.87 -0.21 3975.00 32.48 32.48 -0.01 126.87 127.14 -0.27 4000.00 32.70 32.70 0.00 126.17 126.47 -0.30 4025.00 33.00 32.98 0.01 125.23 125.80 -0.57 4050.00 33.40 33.41 -0.01 124.45 124.99 -0.53 4075.00 33.61 33.60 0.00 123.96 124.48 -0.52 4100.00 33.71 33.73 -0.02 123.86 124.24 -0.37 4125.00 33.81 33.88 -0.08 123.78 124.22 -0.44 4150.00 33.91 33.95 -0.04 123.80 124.20 -0.40 4175.00 33.94 33.97 -0.04 123.54 123.91 -0.37 SURV -Q167 (OPS SUR- MA-003) 19 Nov 03 / Rev 1S Page 6 of 11 AK0213GCM107 • • Survey QC - RGS -CT Specification Sheet gy 4200.00 33.71 33.77 -0.06 122.93 123.20 -0.27 4225.00 33.67 33.73 -0.06 122.76 123.02 -0.26 4250.00 33.67 33.77 -0.09 122.71 122.93 -0.22 I I 4275.00 33.74 33.78 -0.04 122.59 122.95 -0.36 4300.00 33.81 33.86 -0.05 122.61 122.92 -0.30 4325.00 33.84 33.89 -0.05 122.61 122.88 -0.27 4350.00 33.81 33.87 -0.06 122.56 122.79 -0.24 4375.00 33.85 33.93 -0.08 122.57 122.79 -0.22 4400.00 33.96 34.02 -0.06 122.51 122.82 -0.31 4425.00 33.91 33.96 -0.06 122.51 122.81 -0.30 4450.00 33.88 33.94 -0.06 122.45 122.66 -0.21 4475.00 34.01 34.07 -0.06 122.48 122.76 -0.28 4500.00 34.05 34.13 -0.08 122.21 122.51 -0.30 4525.00 34.01 34.07 -0.07 121.89 122.14 -0.25 4550.00 33.89 33.94 -0.05 121.38 121.65 -0.27 4575.00 33.81 33.87 -0.06 121.17 121.34 -0.18 4600.00 33.86 33.93 -0.06 121.18 121.35 -0.18 4625.00 33.87 33.95 -0.08 121.22 121.45 -0.23 4650.00 33.83 33.88 -0.05 121.29 121.56 -0.27 4675.00 34.02 34.07 -0.05 121.33 121.57 -0.24 4700.00 33.64 33.71 -0.07 121.37 121.56 -0.19 4725.00 33.70 33.78 -0.08 121.39 121.57 -0.18 4750.00 33.81 33.87 -0.06 121.34 121.63 -0.29 4775.00 33.86 33.91 -0.04 121.43 121.65 -0.21 4800.00 33.92 33.97 -0.06 121.41 121.62 -0.21 4825.00 33.83 33.91 -0.08 121.38 121.55 -0.17 4850.00 33.73 33.82 -0.09 121.43 121.58 -0.15 4875.00 33.82 33.90 -0.08 121.53 121.71 -0.17 4900.00 33.90 33.98 -0.08 121.56 121.73 -0.17 4925.00 33.87 33.97 -0.10 121.63 121.77 -0.14 4950.00 33.67 33.77 -0.10 121.68 121.83 -0.15 4975.00 33.67 33.77 -0.10 121.71 121.85 -0.14 5000.00 33.72 33.81 -0.10 121.69 121.89 -0.19 5025.00 33.69 33.77 -0.08 121.61 121.82 -0.20 5050.00 33.68 33.76 -0.08 121.70 121.88 -0.19 5075.00 33.49 33.56 -0.07 121.69 121.86 -0.17 5100.00 33.58 33.67 -0.08 121.66 121.83 -0.18 5125.00 33.57 33.67 -0.10 121.78 121.93 -0.16 5150.00 33.58 33.67 -0.09 121.83 122.00 -0.17 5175.00 33.36 33.42 -0.06 121.97 122.13 -0.16 5200.00 33.37 33.48 -0.11 121.99 122.20 -0.22 5225.00 33.21 33.29 -0.08 122.24 122.30 -0.05 5250.00 33.25 33.35 -0.10 122.35 122.47 -0.12 5275.00 33.21 33.28 -0.07 122.56 122.77 -0.20 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 7 of 11 AK0213GCM107 • • Survey QC - RGS -CT Specification Sheet g r / ata 5300.00 32.99 33.06 -0.07 122.91 123.08 -0.17 5325.00 32.28 32.38 -0.10 123.36 123.39 -0.03 5350.00 32.35 32.43 -0.08 123.47 123.58 -0.11 5375.00 32.32 32.42 -0.10 123.56 123.69 -0.13 5400.00 32.17 32.23 -0.06 123.87 124.06 -0.19 5425.00 32.09 32.15 -0.06 124.03 124.19 -0.16 5450.00 31.86 31.94 -0.08 124.32 124.36 -0.04 5475.00 32.04 32.08 -0.04 124.41 124.57 -0.16 5500.00 32.15 32.22 -0.07 124.49 124.64 -0.15 5525.00 32.16 32.21 -0.05 124.74 124.90 -0.16 5550.00 32.38 32.41 -0.03 124.70 124.90 -0.19 5575.00 32.56 32.60 -0.04 124.64 124.85 -0.21 5600.00 32.72 32.75 -0.04 124.75 124.91 -0.16 5625.00 32.92 32.94 -0.02 124.69 124.92 -0.23 5650.00 33.06 33.08 -0.01 124.82 124.97 -0.15 5675.00 32.68 32.73 -0.05 125.12 125.14 -0.02 5700.00 32.72 32.74 -0.02 125.13 125.23 -0.10 5725.00 32.90 32.89 0.01 125.09 125.31 -0.22 5750.00 33.06 33.06 0.01 125.14 125.33 -0.18 5775.00 33.22 33.20 0.02 124.99 125.19 -0.19 5800.00 33.28 33.27 0.02 124.93 125.02 -0.09 5825.00 33.49 33.47 0.02 124.83 124.99 -0.16 5850.00 33.67 33.69 -0.02 124.76 124.88 -0.12 5875.00 33.88 33.85 0.04 124.90 124.98 -0.07 5900.00 34.07 34.05 0.03 124.76 124.86 -0.10 5925.00 34.27 34.23 0.04 124.58 124.63 -0.05 5950.00 34.44 34.43 0.01 124.09 124.17 -0.08 5975.00 34.62 34.62 -0.00 123.94 124.01 -0.07 6000.00 34.82 34.79 0.03 123.90 124.10 -0.20 6025.00 34.56 34.54 0.02 123.88 123.98 -0.10 6050.00 34.48 34.47 0.02 123.76 123.75 0.01 6075.00 34.37 34.36 0.01 123.54 123.50 0.04 6100.00 34.44 34.45 -0.01 123.35 123.32 0.03 6125.00 34.47 34.45 0.03 123.19 123.27 -0.08 6150.00 34.47 34.43 0.04 123.31 123.36 -0.05 6175.00 34.58 34.51 0.07 123.44 123.53 -0.09 6200.00 34.76 34.71 0.05 123.56 123.53 0.02 6225.00 35.00 34.95 0.06 123.60 123.66 -0.07 6250.00 35.23 35.19 0.04 123.64 123.72 -0.09 6275.00 35.43 35.40 0.03 123.72 123.86 -0.14 6300.00 35.68 35.65 0.04 123.83 123.86 -0.03 6325.00 35.70 35.70 -0.01 123.76 123.79 -0.03 6350.00 35.74 35.75 -0.02 123.75 123.77 -0.02 6375.00 35.60 35.59 0.01 123.46 123.53 -0.07 SURV -Q167 (OPS SUR-MA -003) 19 Nov 03 / Rev IS Page 8 of 11 AK02136C4107 0 • Survey QC - RGS -CT Specification Sheet gir r 6400.00 35.22 35.21 0.01 123.04 122.97 0.06 6425.00 35.10 35.09 0.01 122.58 122.57 0.01 6450.00 35.19 35.18 0.01 122.47 122.44 0.04 6475.00 35.32 35.29 0.03 122.44 122.47 -0.03 6500.00 35.36 35.33 0.03 122.43 122.41 0.01 6525.00 35.55 35.53 0.03 122.35 122.44 -0.09 6550.00 35.78 35.73 0.04 122.43 122.44 -0.00 6575.00 35.98 35.96 0.02 122.34 122.30 0.04 6600.00 36.23 36.20 0.03 122.36 122.43 -0.07 6625.00 36.41 36.36 0.05 122.49 122.47 0.02 6650.00 36.33 36.30 0.03 122.61 122.58 0.03 6675.00 35.85 35.84 0.01 122.58 122.50 0.08 6700.00 35.59 35.59 -0.00 122.57 122.49 0.08 6725.00 35.49 35.48 0.01 122.62 122.52 0.10 6750.00 35.57 35.53 0.04 122.66 122.63 0.03 6775.00 35.68 35.66 0.02 122.69 122.59 0.10 6800.00 35.77 35.76 0.02 122.76 122.78 -0.02 6825.00 35.91 35.93 -0.02 122.90 122.76 0.14 6850.00 35.98 35.97 0.02 123.04 122.95 0.08 6875.00 36.01 35.99 0.02 123.05 123.00 0.05 6900.00 35.86 35.85 0.01 123.28 123.15 0.13 6925.00 35.81 35.82 -0.00 123.40 123.25 0.14 6950.00 35.85 35.89 -0.03 123.54 123.41 0.13 6975.00 35.71 35.71 -0.00 123.70 123.59 0.12 7000.00 35.62 35.64 -0.02 123.82 123.67 0.15 7025.00 35.60 35.61 -0.01 123.85 123.72 0.12 7050.00 35.72 35.73 -0.02 123.86 123.73 0.13 7075.00 35.81 35.85 -0.04 123.79 123.72 0.07 7100.00 35.66 35.68 -0.02 123.73 123.58 0.16 7125.00 35.36 35.38 -0.02 123.62 123.44 0.18 7150.00 34.73 34.74 -0.02 123.22 123.12 0.10 7175.00 34.55 34.59 -0.04 123.01 122.95 0.06 7200.00 34.48 34.50 -0.02 122.99 122.89 0.09 7225.00 34.40 34.41 -0.01 122.93 122.79 0.14 7250.00 34.18 34.19 -0.01 122.80 122.66 0.13 7275.00 34.24 34.25 -0.00 122.72 122.65 0.08 7300.00 34.46 34.47 -0.01 122.67 122.63 0.03 7325.00 34.57 34.56 0.01 122.73 122.66 0.07 7350.00 34.38 34.36 0.01 122.77 122.58 0.19 7375.00 34.35 34.34 0.01 122.69 122.55 0.14 7400.00 34.22 34.23 -0.00 122.51 122.41 0.10 7425.00 34.24 34.25 -0.00 122.25 122.22 0.04 7450.00 34.16 34.17 -0.01 121.98 121.86 0.11 7475.00 33.92 33.91 0.01 121.28 121.09 0.19 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 9 of 11 AK0213GCM107 • 0 Survey QC - RGS -CT Specification Sheet WO/data 7500.00 33.82 33.81 0.01 120.99 120.81 0.18 7525.00 33.84 33.83 0.01 120.90 120.77 0.13 7550.00 33.84 33.84 0.00 120.86 120.77 0.09 7575.00 33.69 33.68 0.00 120.87 120.69 0.17 7600.00 33.70 33.70 -0.00 120.89 120.71 0.18 7625.00 33.55 33.54 0.01 120.93 120.77 0.15 7650.00 33.58 33.57 0.01 120.93 120.83 0.10 7675.00 33.64 33.63 0.00 120.93 120.85 0.07 7700.00 33.59 33.59 0.00 121.08 120.92 0.16 7725.00 33.49 33.48 0.01 121.17 120.97 0.19 7750.00 33.43 33.41 0.02 121.34 121.16 0.18 7775.00 33.49 33.47 0.03 121.38 121.27 0.11 7800.00 33.51 33.50 0.01 121.57 121.37 0.20 7825.00 33.47 33.46 0.02 121.76 121.55 0.21 7850.00 33.43 33.42 0.01 121.89 121.69 0.20 7875.00 33.40 33.38 0.02 121.97 121.81 0.16 7900.00 33.15 33.14 0.01 122.14 121.90 0.24 7925.00 33.16 33.18 -0.02 122.20 122.07 0.13 7950.00 33.11 33.12 -0.01 122.35 122.15 0.20 7975.00 32.88 32.90 -0.02 122.65 122.43 0.22 8000.00 32.36 32.36 -0.00 122.81 122.73 0.08 8025.00 32.14 32.12 0.01 122.96 122.97 -0.01 8050.00 32.10 32.11 -0.01 123.06 123.01 0.05 8075.00 31.97 31.98 -0.01 123.20 123.14 0.06 8100.00 31.82 31.82 -0.00 123.29 123.25 0.04 8125.00 31.91 31.91 0.01 123.37 123.36 0.01 8150.00 32.04 32.06 -0.02 123.27 123.37 -0.09 8175.00 32.39 32.40 -0.01 123.26 123.30 -0.04 8200.00 32.67 32.67 0.00 123.35 123.39 -0.04 8225.00 32.89 32.88 0.01 123.29 123.31 -0.02 8250.00 33.02 33.01 0.01 123.36 123.38 -0.02 8275.00 33.16 33.15 0.01 123.43 123.47 -0.03 8300.00 33.27 33.25 0.02 123.53 123.45 0.08 8325.00 33.48 33.42 0.06 123.54 123.49 0.05 8350.00 33.81 33.76 0.05 123.51 123.49 0.03 8375.00 34.18 34.14 0.04 123.37 123.39 -0.02 8400.00 34.81 34.78 0.03 123.00 123.01 -0.00 8425.00 35.44 35.41 0.03 122.73 122.70 0.03 8450.00 35.73 35.72 0.01 122.43 122.47 -0.04 8475.00 36.11 36.10 0.01 122.45 122.49 -0.04 8500.00 36.39 36.37 0.02 122.41 122.47 -0.06 8525.00 36.34 36.31 0.03 122.42 122.53 -0.12 8550.00 36.26 36.24 0.02 122.58 122.58 -0.00 8575.00 35.86 35.85 0.01 123.02 122.99 0.03 8600.00 35.65 35.64 0.02 123.44 123.41 0.03 SURV -Q167 (OPS SUR -14A -003) 19"' Nov 03 / Rev 15 Page 10 of 11 AK0213GCM207 • . Survey QC - RGS -CT Specification Sheet WM/data 8625.00 35.61 35.58 0.02 123.74 123.74 -0.00 8650.00 35.68 35.65 0.03 123.99 124.12 -0.13 8675.00 35.93 35.88 . 0.04 124.29 124.34 -0.05 8700.00 36.37 36.34 0.03 124.30 124.38 -0.08 8725.00 36.92 36.92 0.00 124.75 124.76 -0.01 8750.00 37.91 37.89 0.02 125.23 125.23 -0.01 Average - 0.0044 - 0.2326 Standard Deviation 0.0460 0.30 Tolerance for both the Average and the Standard Casing 0.3° Casing 0.5° Deviation Drillpipe 0.3° Drillpipe 0.75° * Inclination and Azimuth interpolated to same depths as shown. SURV -Q167 (OPS SUR-MA -003) 19 Nov 03 / Rev 15 Page 11 of 11 AK0213GCM107 • • • Survey QC - RGS -CT Analysis Sheet W /data SURVEY QUALITY CONTROL - DATA ANALYSIS REFERENCE SYSTEMS • Grid System I I Grid Correction 0.00 Azimuth reference: Grid / True North TRUE NORTH Vertical reference: RKB /MSL/Other RKB I If other give details I TIE ON DATA . Depth 0.00 Inclination 0.00 Azimuth 0.00 I TVD 1 0.00 Northings 0.00 Eastinqs 0.00 Latitude 70.2970 Az. Ref: Grid/True True Grid Corrected Y /N? N Description I CALIBRATION I Tool Number 1 4094 I Calibration Date 109 Jan 2013 I OPERATING TEMPERATURE Calibration range From 49.73 To 119.49 Gyro operating range From 56.56 To 81.97 I Spec' - Within calibration range FIELD ROLL TEST (Only valid on fixed structures. When not possible input roll test data performed after return to base) Cal value Pre job offset Post job offset Abs dif.cal.post Abs dif.pre.post Spec' • Accel Scale 0.000061 - 0.000332 - 0.000321 0.000321 0.000010 Cal /Post - 0.00015 Mass Unbalance 22.45 -0.61 -0.70 0.70 0.09 Pre /Post - 0.4 ° /hr INITIALISATION Depth (Approx) 1300.08 No of stns 6 Spec' - Min No. - 6 Azimuth Mean 129.28 Std deviation 0.02 Spec' - Azi SD 0.2° Inclination Mean 10.21 Std deviation 0.00 Spec' - Inc SD 0.1° Earth Horizontal Rate Mean (Abs(meas - theor)) 1 0.07 Std deviation 0.00 Spec' - See 0167 DRIFT TUNE Residual x gyro bias Mean -0.001 Std dev' 0.003 Spec's - Mean and SD - 0.333 ° /hr Residual y gyro bias Mean 0.001 _ Std dev' 0.002 Spec's - Mean and SD - 0.333 ° /hr TOOLFACE RATE I Maximum toolface rate 1 247.84 I Spec' - 400 ° /sec I IN /OUT COMPARISON AZI' N/A IF INC' <15° Inclination Difference Mean -0.00 Std dev' 0.05 Spec's - Casing 0.3° /Drill pipe 0.3° Azimuth Difference Mean _ -0.23 Std dev' 0.31 Spec's - Casing 0.5° /Drill pipe 0.75° Lateral Divergence/1000 2.47 Spec - 5.0/1000 Vertical Divergence /1000 0.03 Spec' - 2.0/1000 DEPTH CONTROL Wireline Company Schlumberger I Line type 5/32 Encoder SF I Schlumberger Max Depth (TD) 8750 CCL Corrected NO Zero Depth (Rig up) RKB @ 50ft Rezero Depth -8 Given pup joint depth NA Measured P3 NA Strech cor. At TD divided by TD /1000 .3095 Spec' - 1.5/1000 Dif. Between rigup and rezero depths divided by TD /1000 .9195 Spec' - 2.0/1000 Dif. Between given and meas depth divided by meas /1000 NA Spec' - 2.0/1000 SURV -Q165 (OPS SUR-MA -010) 22 Jan 2004 / Revision 20 Page 1 of 1 AK02136CM107 • • Survey QC - RGS -CT Acceptance Sheet gYrOidata FIELD AND SURVEY INFORMATION Operator BP ALASKA Field / Platform WELLHEAD Well Number PRUDHOE BAY DS18 -21A Survey section From 0.0 ft. to 8750.00 R. Date 2/1/2013 Gyrodata Job No AK0213GCM107 Gyrodata Surveyors Henry Drew Job Objective High Accuracy Gyro Survey SURVEY PERFORMANCE In Spec' QC Parameter Yes /No /NA Possible Actions Contact Duty Engineer to discuss options: Operational temperature within Yes 1. Recalibrate tool to higher temperature specification 2. Resurvey with backup tool 3. Resurvey 'Hot' section at higher speed Roll test data within specification Contact Duty Engineer to discuss options: Only valid on land /fixed installations Yes 1. Recalibrate tool and reprocess survey 2. Resurvey with backup tool Continuous initialisation within Take new initialisation, after three failures: specification Yes 1. Contact Duty Engineer or, 2. Resurvey with back up tool. Contact Duty Engineer to discuss options: Toolface rate within specification Yes Resurvey section from previous bias check Investigate and comment if effects are negligible Contact Duty Engineer to discuss options: Drift tunes within specification Yes 1. Reprocess with different software settings 2. Resurvey with backup tool Inrun /Outrun comparison within Contact Duty Engineer to discuss options. specification Yes Resurvey is usually not required if either inrun or outrun meet all other QC parameters Depth control within specification Yes Contact Duty Engineer to discuss options. Action taken: Note: Provided satisfactory action has been taken, parameters out with specification will not necessarily fail a survey. SURVEY ACCEPTED Gyrodata Representative Client's Representative SURV -Q166 (OPS SUR -MA -003) 13 Nov 03 / Revision 12 Page 1 of 1 AK0213GCM107 Page 1 of 2 Schwartz, Guy L (DOA) From: Sayers, Zach J [Zach.Sayers @bp.com] Sent: Thursday, January 17, 2013 1:32 PM To: Schwartz, Guy L (DOA) ���� Cc: Lastufka, Joseph N; Cubas, Jorge 9 2013 Subject: RE: 18-21B Additional Scope of Work (PFD 196 -198) Please see the addition of step 9 -10 to the operations plan for 18 -21B. 18 -21B Operational Summary: Planned Pre -Rig Abandonment and Preparation Operations: 1. E Pull 3 -1/2" KB Patch at 3870' MD. Drift to deviation with a 2.75" OD centralizer. 2. W Function test LDS tubing, replace if damaged. 3. E Set 3 -1/2" CIBP ^' 11250' 4. E Jet cut tubing - 10925' MD 5. F CMIT -TxIA to 3500 psi. 6. V Set BPV and test to 2000 psi (via IA) 7. 0 Remove S- Riser, Remove wellhouse, level pad - Complete Proposed Procedure: 1. MIRU Parker 272. 2. CMIT -TxIA to 3500 psi. 3. ND tree, Install blanking plug, NU BOP. 4. Test BOPE to 3,500psi, 250 psi low. Pull blanking plug. 5. RU lubricator and pull BPV. Circulate out freeze protection and displace to seawater. 6. Pull 3 1/2" Tubing of -20 7. PU 7" casing scraper. RIH to tubing stub ^' 10925' MD, ensure casing is clean. POOH. LD scraper assembly. ( 8. PU 4" DP, run a 7" EZSV for 29# liner. Set the EZSV at - 10'795' MD 9. PU and run RTTS packer. Perform PT to isolate / verify leak location in 9 -%" casing. POOH. 10. Run 7" 26# Vam Top HC Scab liner. 11. PU 7" whipstock, bottom trip anchor and 6" window milling assembly (to include full gauge string mills). Orient and set the whipstock. 12. Mill a window in the 7" casing from approximately 10775'- 10788' MD' plus 20' of formation. Using 8.6 ppg seawater drilling fluid. 13. Perform a FIT /LOT. POOH for drilling BHA. V 14. MU a 6" BHA with a PDC bit and DIR /GR /RES /NEU /DEN. RIH and drill ahead, per directional plan ,( and rig site geologist, to TD. tee-e) 15. CBU at TD. Back ream to shoe, logging as required by geologist. Open circ sub and circulate the ��,, well clean at the shoe and POOH. O 16. Run and a cement a 4 -1/2 ", 12.6 #, 13Cr -80, liner from TD to 200' above liner. Set the liner top packer and displace the well to seawater. tV_ Z/S 17. After cement reaches ^'1000 psi compressive strength, pressure test well to 3500 psi for 30 minutes and chart. 18. RIH with DPC perf guns. Perf intervals will be determined from LWD Togs. Plan to perforate overbalance. POOH, LD DP and perf guns. 19. Run the 4 -1/2 ", 12.6 #, 13Cr -80 completion tying into the 4 -1/2" liner top. 20. Reverse circulate in corrosion inhibited brine. 1/17/2013 Page 2 of 2 y 4 • • 21. Drop ball & rod and set the production packer and individually test the tubing to 3,500 psi and annulus to 3,500 psi for 30 minutes each. Shear GLM. 22. Set BPV. Test from below to 3500 psi. 23. ND BOPE. Install banking plug. NU and test the tree to 5,000 psi (tree will be changed with 4- 1/16 ") 24. Pull blanking plug. Freeze protect the well to 2,200' TVD. 25. RDMO. Post -Rig Work: 1. Pull BPV. 2. Pull ball and rod. 3. Re- install wellhouse and FL's. 4. Generic GLV's. Thank you, Zach Sayers Drilling Engineer From: Schwartz, Guy L (DOA) [mailto:guy.schwartz @alaska.gov] Sent: Wednesday, January 16, 2013 5:22 PM To: Sayers, Zach 3 Cc: Lastufka, Joseph N; Cubas, Jorge Subject: RE: 18 -21B Additional Scope of Work (PTD 196 -198) Please send me an updated procedure to amend the P & A sundry 312 -369 for 18- 21A.... An outline and updated schematic should take care of the change. Guy Schwartz Senior Petroleum Engineer AOGCC 793 -1226 (office) 444 -3433 (cell) From: Sayers, Zach 3 [mailto:Zach.Sayers(Lbp.com] Sent: Wednesday, January 16, 2013 4:15 PM To: Schwartz, Guy L (DOA) Cc: Joseph.Lastufka@bp.com; Cubas, Jorge Subject: 18 -21B Additional Scope of Work Mr. Schwartz, Due to a failing MIT -IA and suspected leak in the 9-%" casing, we will be adding a 7" scab liner to the scope of work for the sidetrack of the well 18 -21A. Thank you, Zach Sayers Drilling Engineer Alaska Drilling & Wells (907) 564 -5790 — Direct (907) 575 -5189 — cell 1/17/2013 wP \�V/j, t v THE STATE Alaska Oil and Gas ° Conservation Commission f A LAS GOVERNOR SEAN PARNELL 333 West Seventh Avenue rh Anchorage, Alaska 99501 -3572 � Main: 907.279.1433 Fax: 907.276.7542 John Egbejimba Engineering Team Leader / Y BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519 -6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 18 -21A Sundry Number: 312 -369 Dear Mr. Egbejimba: Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, it Cathy 11 . Foerster Chair DATED this of of November, 2012. Encl. RECEIVED STATE OF ALASKA ALARA OIL AND GAS CONSERVATION COMOSION �;EP 2 $ 2092 A ' APPLICATION FOR SUNDRY APPROVAL % �' �'` AOGCC 1 20 AAC 25.280 1. Type of Request: ❑ Abandon 7! Plug for Redrill • ❑ Perforate New Pool ❑ Repair Well ❑ Change Approved Program ❑ Suspend ❑ Plug Perforations ❑ Perforate ❑ Pull Tubing ❑ Time Extension ❑ Operations Shutdown ❑ Re -Enter Suspended Well ❑ Stimulate ❑ Alter Casing ❑ Other 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. • 0 Development ❑ Exploratory 196 - 198 ' 3. Address: ❑ Service ❑ Stratigraphic 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519 -6612 50- 029 - 21944 -01-00 • 7. If perforating, closest approach in pool(s) opened by this operation to nearest 8. Well Name and Number: property line where ownership or landownership changes: PBU 18 -21A • Spacing Exception Required? ❑ Yes ® No 9. Property Designation: 10. Field / Pool(s): ADL 028321 & 028326 • Prudhoe Bay / Prudhoe Bay . 11. PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 14073' • 8774' . 14073' 8774' None 8385', Unknown Casing Length Size MD TVD Burst Collapse Structural Conductor 110' 20" 110' 110' 1490 470 Surface 3800' 13 -3/8" 3800' 3496' 3450 1950 Intermediate 9876' 9 -5/8" 9876' 8258' 6870 4760 Production Liner 2057' 7" 9585 - 11642' 8114' - 8744' 8160 7020 Liner 1258' 4 -1/2" 11300' - 12558' 8724' - 8781' Liner 1550' 2 -3/8" 12000' - 13550' 8772' - 8804' Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): 11610' - 13518' 8742' - 8802' 4 -1/2 ", 12.6# x 3 -1/2 ", 9.3# L -80 11299' Packers and SSSV Type: 7" x 4 -1/2" TIW SS Horizontal Packer Packers and SSSV 11312' / 8725' MD (ft) and TVD (ft): 12. Attachments: 13. Well Class after proposed work: ® Description Summary of Proposal ® BOP Sketch ❑ Detailed Operations Program ❑ Exploratory ® Development ❑ Service ❑ Str 14. Estimated Date for 15. Well Status after proposed work: Commencing Operations: December 1, 2012 ❑ Oil ❑ WINJ ❑ WDSPL ❑ Plugged 16. Verbal Approval: Date: ❑ Gas ❑ GINJ ❑ GSTOR ❑ Abandoned Commission Representative: ❑ WAG ❑ SPLUG ® Suspended • 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Jorge Cubas, 564 -4971 Printed Name Jo Egbejimba Title Engineering Team Leader r Prepared By Name /Number: Signature ,, / . ( Phone 564 -5859 Date y' /.0 0_ Terrie Hubble, 564 -4628 • i Commission Use Only Conditions of approval: Notify Commission so that a representative may witness 2 1� �� 2 t Sundry Number: J J (oCom i -- ❑ Plug Integrity ' Test ❑ Mechanical Integrity Test ❑ Location Clearance Other: 3S yfL, 5 (•e * AI rn4 6 P /4. art 4- - f--4-1- z- r✓ �iE� ' ) Subsequent Form Required: /d _god / t/ {� APPROVED BY /— / Approved By: 7w COMMISSIONER .C� MISSION Date S --( 2 — Form 10 -403 Revised 01/20 I C 1 NU , In Du plicate `� � /e R I G I N A L NUV � , �4 • • To: Alaska Oil & Gas Conservation Commission From: Jorge Cubas b p Drilling Engineer Date: Sep. 20, 12 Re: 18 -21A Sundry Approval Sundry approval is requested for well 18 -21A. 18 -21A is a CST extension completed in 1997 in Zone . 1A with 1000' of slotted liner. The well developed TxIA communication shortly after being brought online. A tubing patch was set over GLM #1 in spring 1998 and restored integrity. The well cycled with good ontime until it was shut -in at the end of 2002 for choke problems. After – 1 year, the choke was repaired and the well was back on production. It produced with good ontime until it was shut -in in mid - 2006 because the patch started leaking. A caliper of the tubing was also run in 2006 and indicated the tubing was in poor condition. The leaking patch was pulled and new patch was run in March 2008, which restored integrity. 18-21A well continued to cycle with degrading rate and ontime until it was . shut -in for high GOR in 2011. REASON FOR SIDETRACK 18 -21A is no longer a competitive producer due to a high GOR, and there are no remaining wellwork • options. The proposed sidetrack will access reserves in a –50 acre Zn l A target in eastern DS 18 and be completed with a 4 -1/2" tubing and liner for increased future utility. The proposed plan for 18 -21B is to drill a sidetrack of 5050' from the TSGR to Zn 1A. The existing well will be plugged and abandoned by using a CIBP and cemented liner. The following describes work planned and is submitted as an attachment to Form 10 -403. A schematic diagram of the proposed sidetrack is attached for reference. is ((mew' . io k et( rOd'Gey 4K a r Af,.v ' /die f qd aveigfe OA, 5 ,o4 yee'tA'f S�Ov "e'-e 094.ry Pre -Rig Work: (scheduled to begin December 1, 2012) " )// z 1. S Pull 3 -1/2" KB Patch at 3870' MD. Drift to deviation with a 2.75" OD centralizer. 2. E Set 3 -1/2" CIBP at 11250' MD ■ 3. F CMIT -TxIA to 3000 o 4. E Jet cut TBG at 1 X125' MD 5. F Circ out well to seawater. 6. V Set BPV and test to 2000 psi (via IA). e A .3�1 Rig Work: (scheduled to begin on January 29, 2013) 3t 1. MIRU - ' — d lye . fcesb 2. Pull BPV & existing Tubing 3. Set 7" Whipstock at 10,775', change -out pack offs and mill window 4. Drill 5,050' of 6 -1/8" Production hole to TD 5. Run 4-1/2" solid liner and cement with 120 bbl. cement: 6. Perforate Wellbore as per subsurface team s1 7. Run 4 -1/2" Completion, set BPV . ` 8. ND /NU /Rig Release 1" fro , Post -Rig Work: • • 1. Pull BPV 2. Re- install wellhouse and FL's. 3. Generic GLV's Jorge Cubas Drilling Engineer 564 -4971 ire* = 4-1/16' FAAC • IMLLHEAD= FMC SAF NOTES: WELL ANGLE > 70' e 10595' TLATOR = ' AXELSON 1 8-21 A KB. EtEV = 50.0' BF. ELEV = WA 13-3/8' CSG. H 64. CA H. t 1(15 1" 680, K-55 BTC. I 1987 I-14-1/2" LICO BAL-O SSSV AAP, D = 3.817 I Max Angle = 98 @ 1383t 6 = 1k67 10 12.34T ALI Datum TVD= 8754' SS 130' CONDUCTOR, 91.5#, FI-40, ID = 19.125' Mal • 1 3810' H4-1/7 X 3-1/2' X0,13 = 2.992' 1 eiji 7 I 13318' CSG, 680, L-80 BID ID = 12.415' 1- 3800. 3870' - 3908'1_13 KB PATCH. ID = 1.825' (03/19/08) 4-1/2' 713G-IPC, 12.6k L-80 BTC, - 3810. GAS UFT MANDRELS 0152 bpf, ID = 3.958' Ea MD 7VD DE IllgaigAmErma PORT Wg.. 3 H MmMAG:22 DIA lEll 0 03/2 Minimum ID = 1.303" @ 11999' STA # 1 = DMY BEHIND PATCH " 3-1/2 GS FISH NECK ---I - 8385' 1-IFISli SUCKLFE TOOLSTRIVG 28.3' OAL, (09/16/12) 1 • I 8809' H3-1/2" ODS X NP, D = 2.813" 1 ITOP OF r LNR -1 9585' , 9686' H 9-5o8' X r 11W LNR FIGR, ID = 6.180' • 1 9-5/8' CSG, 470, L-80 AB MOD BUTT, ID = 8.681' -I 9875' 1 2 r 11300' H44,4- ilw POL6H® RISER WTX-NP, CI= 2.813' I 3-1/7 7BG4PC, 9.3#, L-80 EUE 8RD MOD, -1 11299' i = _ 1 11311' H3-1/7 TIW OVERSHOT SEAL ASSY .0087 bpf, ID 2.992' I 1 11312 Hr X4-1/2 T1W SS HORIZ PKFL I3 = 3.52' ■..., 11316' I - 15 - 11W PAILLOUT EXTENSION, ID = 4.94' 11321' I-15-1/2 X4-1/2' X0, ID = 3.958' 1 I I I I I r LNR, 290, L-80 Bit, .0371 bpf, ID = 6.184' -I 11847 IA : rj ■ 1 I TOP OF 2-3/8' LM H 12ow 11 11 1 11999' H3-1/2' GS FISHNECK, ID = 2.00' I I I I 1 • 11 I ! I I I I 1 I I 1 I I 4-1/2' LNR, 11.5#, L-80 FL4S, ,0155 bpi, ID = 4.000' H 12553* i k 11, • \ • \ • \ PERFORATION SUI , AMNRY , \ \ REF LOG: CST ON 05/22/89 \ \ \ ANGLE AT TCP PERF: 87° (E 11610' \ ?? FISH - LOST 4 SLPS & LINR ELEMENT 14zrte: Refer to Roduction DB for historical perf data SE SIT I4TETWAL OpniSqz DATE FROM ECIPSE PATCH - 08/22/97 4-1/2' SLID 11610 - 12515 ' 0 05/27/89 2-3/8* SLID 12030 - 13518 0 02/25/97 • 13518' -12-3/8' SEAL SUB, ID = 1.303' I 12-3/8" LM, 4.60, L-80, .0039 bpf, 13 = 1.941' H 13660. I 12.75' C HOLE TD 14073' DATE REV BY' COMENTS : DATE - REV BY COASENTS MUM:4E BAY IHT 05/19/89 ORDINAL COMPLETION 04/02/08 KOCIPJC PULL PATCH (03/19/08) KEIL: 18-21A 02/25/97 CTD SIDETRACK (18-21A) i 04/02/08 TEL/ PJC SET KB PATCH (03/28/08) PEfiLfT P43: '1961980 01/28/02 a-VKAK OORRECTIONS 106/26/12 PJC DPAM4G CORRECTIONS API ME 50-029-21944-01 02/24/02 GC/KAK ()Fel HOLE DEPTH 07/11/12 PJC ERAVA4G CORRECTIONS SEC 19, T11N, R15E, 1219' FILL & 416' PAL 06/14/03 CMYTU KB la.EVATION CORFECTIOh 09118/12 LEC/JIAD ASH SL TOOLSTRFIG (09/16/12) 09/13/03 QMDITLP D4ILIM IA & FERF ANGLE : 1 1 BP etplocation (Alaska) VO TREE = ID _ 41,16" FMS • 18 -21 A S AF NOTES: WELL ANGLE > 70° © 10595' ' ACTUATOR - ' AXELSON KB. EEV = 50.0' PRE -RIG BF. ELEV = N/A KOP= 1300' 13 -3/8° CSG, —1 64' 1-4> I Max Angle = 98° @ 13837' 68#, K -55 BTC, 1982' I — I4 - 1/2" CAMCO BAL -O SSSV NP, D = 3.812" Datum MD = 13567' ID = 12.347 u Datum TVD = 8754' SS 130" CONDUCTOR, 91.5#, H-40, ID = 19.125' H 78' 3810' —14 -112" X 3 -1/2" XO, D = 2.992" I 13 -3/8' CSG, 68#, L-80 BTC, ID = 12.415' —1 3800' 4-1/2" TBG -IPC, 12.6#, L-80 BTC, — 3810' GAS LIFT MANDRELS .0152 bpf, ID = 3.958" ' ST MD ND DEV TYPE VLV LATCH PORT DATE '1 3884 3566 33 MMG -2 DMY RK 0 2 8385 7298 34 MMG -2 DMY RK 0 03/21/97 Minimum ID = 1.303" @ 11999' STA # 1 = DMY BEHIND PATCH 3 -1/2" GS FISH NECK I 1 I 8809' H3-1/2" OT S X NP, D= 2.813" TOP OF 7° LNR — 9585' 9585' H 9-5/8" X7' TIW LNR HGR, ID = 6.180° 9-5/8" CSG, 47#, L-80 AB MOD BUTT, ID = 8.681° —1 9875' 1 - ft'Y1^ . 11250' — I 3 CEP TBG CUT DEPTH I—I 10925' > 11300' IH 4- 314° TM/ POLISHED RISE W/X -NP, ID = 2.813" I ■ 3 -1/2" TBG -PC, 9.3#, L -80 EUE 8RD MOD, —I 11299' xi/ — 11311' — 3-1/2" 11W OVERSHOT SEAL ASSY 11312' H7" X4-1/2" TNV SS HORIZ PKR, ID = 3.52" 11316' — 15' TIW MILLOUT EXTENSION, D = 4.94" 11321' — - X4 -1/2" )Q), ID = 3.958° I I 1 11 r LNR, 294, L -80 BTC, .0371 bpf, ID = 6.184' IH 11642' 1 1 ■ 1 T' 12000' 1 'R H I TOP OF 2 -3/8" Ll I 1 1999' I — 3-1/2" GS FISHNECK, ID = 2.00" 1' 1 �� 11 11 �1 4-1/2' LNR, 11.5#, L-80 FL4S, .0155 bpf, ID = 4.000' 1 I I -� 12558' 1, \ � PERFORATION SUMMARY \ ♦ REF LOG CBT ON 05/22/89 • ANGLE AT TOP PE E: 87° @ 11610' Note: Refer to Roduction DB for historical pert data ?? FISH - LOST 4 SLPS & LWR ELEMENT SIZE SPF NTE2VAL Opn /Sqz DATE FROM ECLPSE PATCH - 08/22/97 4-1/2" SLID 11610 - 12515 0 05/27/89 2 -3/8" SLID 12030 - 13518 0 02/25/97 13518• - 23/8" SEAL SUB, ID = 1.303' I 12 - 3/8" LNR, 4.6#, L .0039 bpf, D = 1.941" 13550' 12.75° OPEN HOLE TD H 14073' I . DATE REV BY COMM34TS DATE REV BY COMMENTS FRUDHOE BAY UNIT 05/19/89 ORIGINAL COMPLETION 04/02/08 KDGPJC PULL PATCH (03/19/08) WELL: 18-21A 02/25/97 CTD SIDETRACK (18 -21A) 04/02/08 TEU PJC SET KB PATCH (03/28/08) PERMIT No: '1961980 01/28/02 CI-VKAK CORRECTIONS 06/26/12 PJC DRAWING CORRECTIONS API No: 50- 029 - 21944-01 02/24/02 GC/KAK OPEN HOLE DEPTH 07/11/12 PJC DRAVVNG CORRECTIONS SEC 19, TUN, R15E, 1219' FM_ & 416' FWL 06/14/03 CMO/TLP KB ELEVATION CORRECf1OF 09/18/12 LEC7JMD FISIt SL TOOLSTRNG (09/16/12) 09/13/03 CMO/TLP DATUN MD & PERE ANGLE 09/27/12 JRC PRE-RIG I I BP Exploration (Alaska) TREE = 4-1/16" FMC • S NOTES: WELL ANGLE > 70° © '*** 4 ACTUATOR= AXELSON - [WELLHEAD = FMC 18-21B 1/V CHROME TBG & LNR ' Proposal BF. ELEA/ = N/A ll KOP = 13W t x Max Angle = _ © ' — 4 - 1/2" HES X NIP, ID = 1812" Datum MD = N/A I Datum TVD = 8800' SS GAS LIFT MANDRELS 30" CONDUCTOR, 91.54, H-40, ID = 19.125" — 78' ST MD TVD DEV TYPE VLV LATCH PORT DATE 13-3/8" CSG, 68#, K-55 BTC, ID = 12.347" — 64' / 4 2 2 13-3/8" CSG, 68#, L-80 BTC, ID = 12.415" — 3800' 1 Minimum ID = " @ ' 9885. --I 9-5/8" X7" TM/ LNR HGR, ID = 6.18' ITOP OF 7" LNR H 9585' .111 11 _ —14-112" HES X NIP, ID = 3.813" o 9650' H 7" X 4-1/2" TNT FKIR, ID = " I A 9-5/8" CSG, 47#, L-80 AB MOD BUTT, ID = 8.681" — 9875* 60 I — 4-1/2" HES X NIP, ID = 3.813" TSGR 9758' — 14-1/2" HES M NIP, ID = 3.725" I ....... 10575' 1-17" X 5" LNR TIEBACK, D= ' I TOP OF 4-1/2" LNR I----I 10575' I---- — 17" X5" LTP, ID = 4-1/2" TBG, 12.64/, 13CR-80 . -- I 10600' ,...,. ,.... I--14-1/2" WLEG, ID = 3.958" 1 .0152 bpf, ID = 3.958' ,........„..... — 7° X5" BKR LNR HGR, ID = " „o 7" ._i I VVI-IPSTOCK (XX/XX/XX) H 10775' 1...‹ I--15" X4-1/2" XO, ID = " 7" LNR, 29#, L-80 BTC, .0371 bpf, ID = 6.184" I— ii841. PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: ° © ' Note: Refer to Production DB for histoncal pert data SIZE SPF INTERVAL Opn/Sqz DATE PBTD --I 4-1/2" LNR, 12.6#, 13CR , — I 15825' .0152 bpf, ID = 3.958" DATE REV BY COMENTS DATE REV BY COIAENTS PRUDHOE BAY UNIT 05/19/89 ORIGINAL COMPLETION VVELL: 18-21B 02/25/97 CTD SIDETRACK (18-21A) PMT No: 07/24/12 MSE PROPOSED RST API No: 50-029-21944-02 09/27/12 JRC PROPOSED RST SEC 19, T11N, R15E, 1219' FM.. & 416' FVVL BP Exploration (Alaska) • • .. .., PARKER 272 BOP STACK RAM TYPE BOP: DUTCH LOCK DOWN FLANGE SHAFFER LXT DOUBLE BOP 13 5/8 " -5M 13 5/8 " -5M STUDDED TOP 13 5/8 " -5M FLANGED BOTTOM _- " " " " " ""-" "`- W/(2) 14" UL2 OPERATOR, UPPER CAVITY ANNULAR BOP: - -- SHAFFER LXT 13 5/8 " -5M AND (2) 14" PSLK W /BSTR OPERATOR, 13 -5/8" 5M STUDDED TOP LOWER CAVITY 0 13 -5/8" 5M FLANGED BOTTOM 0 I I DRILLING CROSS: 13 5/8 " -5M FLANGED TOP I. iii? • ■ 1: 13 5/8 " -5M FLANGED BOTTOM • 7a O •- 0 ° ° � O - i� W (2) 3 1/8 " -5M SIDE OUTLETS • ° • 0 0 1 - 1 3 - Il 3 4.8•••••• 0 00 ' 0 moo ■ II 3) • 0 0 • I KILL LINE: ,�.�� C101%1 2 1/16" 5M FLEX HOSE I � L.Y ; ? .11. /, \.II ,;- . ��� .�����ai .v . . ... I'� 2 1/16" 5M X 3 -1/8" 5M D.S.A. 1 ?, I I \ % 1 ? ,. I ∎ ∎ ∎ � ' %I. %O 3 -1/8" 5M FLANGED MANUAL GATE VALVE 3 -1/8" 5M FLANGED HYDRAULIC GATE VALVE I a ..•.., 0 X01, • I :I :I ■- ° 0 0 • I I CHOKE LINE: RAM TYPE BOP: 3 -1/8" 5M FLANGED MANUAL GATE VALVE SHAFFER LXT SINGLE 13 5/8" 5M 3 -1/8" 5M FLANGED HYDRAULIC GATE VALVE 13 5/8 " -5M STUDDED TOP 8" 5M FLEX HOSE 13 5/8 "- 5M FLANGED BOTTOM 3 1 / W /(2) 14" UL2 OPERATOR • • Page 1 of 1 • R . Subject: FW: INTENT PLUG for RE -DRILL WELLS: Corrected From: Davies, Stephen F (DOA) Sent: Monday, February 08, 2010 10:52 AM To: Foerster, Catherine P (DOA); McMains, Stephen E (DOA); Schwartz, Guy L (DOA); Saltmarsh, Arthur C (DOA); Aubert, Winton G (DOA) Subject: RE: INTENT PLUG for RE -DRILL WELLS: Corrected Revised procedure with an additional step per Cathy's comment: INTENT PLUG for RE -DRILL WELLS ( IPBRD) Type Work Code in RBDMS 1 When a Form 10 -403 is submitted requesting approval to plug a well for redrill, the initial reviewer (Art / or Steve D.) will check to make sure that the "Plug for Redrill" box in the upper left corner of the 403 form is checked. If the "Abandon" box is checked, we will cross that erroneous entry out and initial it on both copies of the Form 10 -403 (AOGCC's and operator's copies). 2. On the Form 10 -403 if "Abandon" is checked in Box 15 (Well Status after proposed work), Art or Steve V D. will cross that erroneous entry out and initial it on both copies of the Form 10 -403 (AOGCC's and operator's copies). Instead, we will check the "Suspended" box. Guy and Winton will serve as quality control for steps 1 and 2. 3. When Steve McMains receives the Form 10 -403 with a check in the "Plug for Redrill" box, he will enter the existing code "IBPRD" into RBDMS. This code automatically generates a comment under the History tab stating "Intent: Plug for Redrill." 4. When Steve McMains receives any Form 10 -407, he will check the History tab in RBDMS for this comment. If he sees the "Intent: Plug for Redrill" code, and cannot find any evidence that a subsequent re -drill has been COMPLETED, he will assign a status of SUSPENDED to the well bore in RBDMS, no matter what status is listed on the 10 -407. Steve will also change the status on the 10 -407 form to SUSPENDED, and will date and initial his change. If Steve does not see the "Intent: Plug for Redrill" comment or code, he will enter the status listed on the Form 10 -407 into RBDMS. 5. When the Form 10 -407 for the redrill is received, Steve M. will change the original well's status from suspended to abandoned. 6. The first week of every January and July, Steve M. and Steve D. will check the "Well by Type Work Outstanding" user query in RBDMS to ensure that all of the Plug for Redrill wells have been handled properly. At this same time, Steve M. and Steve D. will also review the list of suspended wells for accuracy. Thanks, Steve D. I I file: //F: \Daily_ Document_ Record \Procedures_Instructions \FW INTENT PLUG for RE- DRI... 4/6/2012 STATE OF ALASKA ~ ~~ ZQ~$ ALA OIL AND GAS CONSERVATION COM I REPORT OF SUNDRY WELIAI>~11R~a~DIiS~ Commission 1. Operations Abandon ~ Repair Well ~ Plug Perforations ~ Stimulat Q{~~~ Other ~ tubing patch Performed: Alter Casing ~ Pull Tubing [~ Perforate New Pool ~ Waiver ~ Time Extension Change Approved Program ~ Operat. Shutdown Perforate ~ Re-enter Suspended Well 2. Operator BP Exploration (Alaska), Inc. 4. Current Well Class: 5. Permit to Drill Number: Name: Development ~ Exploratory 19s-198o ' 3. Address: P.O. Box 196612 Stratigraphic ~ Service ` ' 6. API Number: Anchorage, AK 99519-6612 50-029-21944-01-00 7. KB Elevation (ft): 9. Well Name and Number: 50 KB PBU 18-21A 8. Property Designation: 10. Field/Pool(s): ADLO-028326 PRUDHOE BAY Field/ PRUDHOE OIL Pool 11. Present Well Condition Summary: Total Depth measured 14073 " feet Plugs (measured) None true vertical 8773.72 feet Junk (measured) Effective Depth measured 14073 feet t.~LriJ~ D'63~~ ~~~; ,~ ~ ~~~~ true vertical 8792 feet Casing Length Size MD TVD Burst Collapse Conductor 110' 20" Surface - 110' Surface - 110' Surface 3750' 13-3/8" 72# L-80 Surface - 3795' Surface - 3496' 5380 2670 Production 9826' 9-5/8" 47# L-80 Surface - 9876' Surface - 8258' 6870 4760 Liner 2057' 7" 29# L-80 9876' - 11641' 8258' - 8744' 8160 7020 Slotted Liner 1258' 4-1/2" SLTD 11.5# L-8C 11610' - 12515' 8742' - 8784' 8430 7500 Pre Drilled Liner 1550' 2-3/8" 4.6# L-80 12000' - 13550' 8772' - 8804' 11200 11780 Perforation depth: Measured depth: SL 11610' - 12215' PRE-DRILL-LINER - 12031' - 13518' _ True Vertical depth: 8742' - 8783' _ 8782' - 8802' _ _ Tubing: (size, grade, and measured depth) 4-1/2" 12.6# L-80 Surface - 3810' 3-1/2" 9.3# I-80 3810' - 11299' Packers and SSSV (type and measured depth) 7"x4-1/2" TIW SS HORIZ PKR 11312' 0 0 0 0 0 0 12. Stimulation or cement squeeze summary: Intervals treated (measured): ((,' ( `~ ~}uu Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: SHUT-IN Subsequent to operation: SHUT-IN 14. Attachments: 15. Well Class after oroposed work' Copies of Logs and Surveys Run Exploratory ~`' Development ~ _ Service Daily Report of Well Operations X 16. Well Status after proposed work: Oil Gas WAG GINJ i„~. WINJ ~ WDSPL 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: N/A Contact Gary Preble Printed Name Gary Prebl Title Data Management Engineer Signature Phone 564-4944 Date 4/7/2008 Form 10-404 Revi ed 04/2006 ~ ®~ ~ ~ ~) ~ ~ /,i a~' ~ /'~ fSu~mjt~ Original Only ~ \ ! v rte"-'' Y/~l~ /L~-~" Y 9 ~ • 18-21A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ACTIVITYDATE 3/10/200 3/11 /200 SUMMARY 8 '*'*'`*WELL SHUT IN ON ARRIVAL *** DRIFT W/2.80" CENT W/2.70" LIB. TAG @ 3793' SLM SHOWS IMPRESSION 'OF AROUND EDGE MATCHES UP TO ID OF 3 1/2" PIPE. '!DRIFT W/ 1.70" CENT W/1.5" BULLNOSE THROUGH PATCH TO 8000' SLM. `'MADE 2 RUNS W/2 .5" BRUSH TO 3791' SLM.. ATTEMPT TO PULL PIECE OF PATCH PU- LLED 28" OF ECLIPSE PACKER ASSEMBLY W/ 2 7/8" BRUSH FROM 3971' SLM '***CONT ON WSR 3/11/08**** 8 `***CONT FROM WSR 3/10/08***'` (pre fish tub patch) RAN 3 1/2" BRUSH, 2.25" LIB TO TOP OF REMAINDER OF PATCH @ 3875' SLM, 3879' MD PULLED SPACER SECTION OF 3 1/2" ECLIPSE PATCH FROM 3875'SLM ATTEMPT TO PULL LOWER ANCHOR @ 3890' SLM. UNABLE TO LATCH. RAN 2.75" TAPERED LIB TO TOP OF LOWER PACKER SECTION FROM ECLIPES PATCH @ 3890' SLM. "`LIB SHOWS THAT LOWER ANCHOR IS CLEAR OF DEBRIS. DOES NOT SHOW SERRATIONS FOR PULLING TOOL TO LATCH. ~~**CONT ON WSR 3/12/08*"`'` 3 ~'`**CONT FROM WSR 3/11/08'`'`** RIGGED DOWN FROM WELL ****WELL TURNED OVER TO DSO UPON DEPARTURE""* ***WELL SI ON ARRIVAL "** FUNCTION TEST & PT WLV'S TO 3000 PSI....GOOD RAN 2 1/2" GS & RELEASABLE SPEAR TO 3888' SLM...NO BITES RAN 2 1/2" GR & RELEASABLE SPEAR TO 3888' SLM...NO BITES. GO TO WEATHER HOLD *'`* JOB IN PROGRESS/ CONT ON 03-19-08 WSR *** • • 3/19/2008'*`* RESUME WORK FROM WEATHERHOLD *** (PATCH) '' RAN 2.70 CENT, 2' 1 7/8" STEM, 2.75" LIB. SD @ 3888' SLM. (picture of fish 'neck ) !'RAN 2 1/2" GR, 2.40" RELEASABLE SPEAR. PULLED BTM PACKER FROM ,;3888' SLM.( missing 1 element a ::RAN 3' 1 7/8" STEM, 2.70" CENT, 3 1/2" LOOSE BL-BRUSH. STOP @ 11187 :SLM DUE TO DEVIATION.( recovered 2/3 of element ) ARAN 2.74" WFD DMY DRIFT. MAKE TARGET DEPTH OF 4000' SLM, NO 'PROBLEMS ENCOUNTERED. RDMO ''`'`* WELL LEFT SI, DSO NOTIFIED OF WELL STATUS *** 3/28/2008 **'`WELL SHUT IN ON ARRIVAL"** INJTIAL WHP 1.100/400/0 'SET BAKER 3-1/2" "KB" STRADDLE,PATCH. MiD-ELEMENTS 3871'-3906'_..._- OAL 40.28', MIN I D 1.825". ~ •° 'TOP OF ASSEMBLY AT 3869.5'. BOTTOM ASS~~MBLY 3909.5', TAGGED ';AFTER SET. 'WWELL SHUT IN. FINAL WHP 1100/400/0 '*""JOB COMPLETE*'`'` 4/6/2008 T/I/0 = 1020/400/0 Temp = S/I -MIT IA PASSED to 2400 psi (Restore tubing !'integrity) -Pressured up IA to 2400 psi with 24.5 bbls 95*F crude. (2nd test) IA -:lost 20 psi in 1st 15 min and 10 psi in 2nd 15 min for a total loss of 30 psi in 30 -min test. Bled IA to initial pressure. FWP's = 1020/400/20 ~''** Casing valves open to guages, tags hung, DSO notified of well status *** FLUIDS PUMPED BBLS 1 diesel 1 Total o1, BB OP, B c:LOalk'~ILM.DOC PERMIT AOGCC Individual Well Geological Materials Inventory DATA T DATA PLUS 96-198 DIR SRVY ~86-14060 Page: 1 Date: 01/21/99 RUN RECVD 04/29/97 10-407 ~OE~ETION D~TE ~/~/ D~ILM WE~ O~S ~ ~1t~1~ TO ~1~1~ Are dry ditch samples required? y~ And received? Was the well cored? yes ~Analysis & description received? Are well tests required? yes ~..~Received? yes~a~ .... Well is in compliance Initial COMMENTS STATE OF ALASKA ,LASKA OIL AND GAS CONSERVATION COMMI~.... REPORT OF SUNDRY WELL OPERATIONS 1. 'Operations performed: Operation Shutdown_ Stimulate__ Plugging_ Perforate_ Pull tubing _ Alter casing _ Repair well _ Other_X 2. Name of Operator: 5. Type of Well: 6. Datum of elavation (DF or KB feet): ARCO Alaska, Inc. Development_X 50' RKB 3. Address: Exploratory_ 7. Unit or Property: P.O. Box 100360 Stratagrapic_ Anchorage, AK 99510-0360 Service_ Prudhoe Bay Unit 4. Location of well at surface: 8. Well number: 1219' FNL, 416' FWL, Sec 19, T11N, R15E, UM. 18-21A At top of productive interval: 9. Permit number/approval number: 1229' FSL, 4459' FWL, Sec 19, T11N, R15E, UM. 96-198 At effective depth: 10. APl number: 50-029-21944-01 At total depth: 11. Field/Pool: 1048' FNL, 2618' FEL, Sec 29, T11N, R15E, UM. Prudhoe Bay Oil Pool 12. Present well condition summary RECEIVED Total Depth: measured 14073 feet Plugs (measured) true vertical 8792 feet 1 'l 1998 Effective Depth: measured 14073 feet Junk (measured) true vertical 8792 feet ,~daska 0i! & Gas Cons. Commission Casing Length Size Cemented Measured depth ~"~P'C'r~e~r~ical depth Concmtor 110' 20" 2150# Poleset 110' 110' Surface 3750' 13-3/8" 2500 Sx CS III & 3800' 3496' 600 Sx Class G Production 9826' 9-5/8" 750 Sx Class G 9876' 8258' Liner 2057' 7" 550 Sx Class G 11642' 8744' Slotted Liner 1258' 4-1/2" Uncemented 12558' 8781' Pre Drilled Liner 1550' 2-3/8" Uncemented 13550' 8804' Perforation Depth measured 4-1/2" Slotted Liner: 11610- 12515'; 2-3/8" Pre Drilled Liner: 12031 - 13518' true vertical 4-1/2" Slotted Liner: 8742 - 8783'; 2-3/8" Pre Drilled Liner: 8782 - 8802' Tubing (size, grade, and measured depth) 4-1/2", 12.6#, L-80, Tubing @ 3810' MD; 3-1/2", 9.3#, L-80, Tubing @ 11299' MD Packers and SSSV (type and measured depth) TIW Mod SS High Angle Mech Set Packer @ 11312' MD; Camco BAL-O SSSV @ 1982' MD 13. Stimulation or cement squeeze summary Intervals treated (measured) see attached 0~--~, [ :~----,!~\,AL, . ~ . Intervals treated (measured) ~i ~ 14. Representitive Daily Averaae Production or Iniection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 1394 24843 0 884 Subsequent to operation 1006 11865 0 734 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run _ Daily Rep~ of Well Op. era~ns X Oil X Gas_ Suspended Service 17. I hereb.~ti~7~,re, go~;~ i~u~e and2ect to th~.est of my knowledge. Signed ~ ~,,~,,,¢~/ ~ o,,' /""'~ ~ ~' Title: Engineering Supervisor Date Form 10-404 Rev 06/15/88 SUBMITIN DUPLICATE "-~ 18-21A DESCRIPTION OF WORK COMPLETED TUBING PATCH INSTALLATION 8/15/97: Performed Leak Detection Log that indicated a leak existed at the bottom of the Tubing Patch set across GLM #1 (Patch set 4/15/97; previously reported). 8/22/97: RIH & pulled the leaking 3-1/2" Eclipse Tubing Patch (1.812" ID) at 3878 - 3898' MD (seal to seal). POOH w/Patch minus 4 lost slips & lower rubber element. Fished for lost slips & element; no recovery. RD. 8/23/97: Drifted to try and grab rubber element & slips to 11150' MD. POOH; no recovery. RD. 4/18/98: RIH & set a 3-1/2" Eclipse Tubing Patch (1.75" ID) across GLM #1 at 3874 - 3897' MD (seal to seal). POOH. RD. 4/19/98: TIFL failed. 5/2/98: RIH & pulled the Tubing Patch (listed above). 5/6/98: RIH w/video camera to view tubing around GLM #1. Tubing condition appeared good. POOH w/camera. RD. 5/12/98: RIH w/CT & jetted tubing wash from 3800 to 3950' MD w/60 bbls 50% Diesel - 50% Xylene @ 3 bpm. POOH. 5/17/98: RIH & set a 3-1/2" Eclipse Tubing Patch (1.75" ID) across GLM #1 at 3879 - 3909' MD (seal to seal). POOH. 5/20/98: TIFL passed. RD. RD. Placed the well on production & obtained a valid welltest. STATE OF ALASKA .,SKA OIL AND GAS CONSERVATION COMMIS'~ .... ¢ REPORT OF SUNDRY WELL OPERATIONS · Operations performed: Operation Shutdown_ Stimulate~ Plugging_ Perforate __ Pull tubing _ Alter casing _ Repair well _ Other _X 2. Name of Operator: ARCO Alaska, Inc. 3. Address: P.O. Box 100360 Anchorage, AK 99510-0360 4. Location of well at surface: 1219' FNL, 416' FWL, Sec 19, T11N, R15E, UM. At top of productive interval: 1229' FSL, 4459' FWL, Sec 19, T11N, R15E, UM. At effective depth: At total depth: 1048' FNL, 2618' FEL, Sec 29, T11N, R15E, UM. 5. Type of Well: Development _X Explorato[y _ Stratagrapic _ Service _ 6. Datum of elavation (DF or KB feet): 50' RKB 7. Unit or Property: Prudhoe Bay Unit 8. Well number: 18-21A 9. Permit number/approval number: 96-198 10. APl number: 50-029-21944-01 1. Field/Pool: Prudhoe Bay Oil Pool 12. Present well condition summary Total Depth: measured 14073 feet Plugs (measured) true vertical 8792 feet Effective Depth: measured 14073 feet Junk (measured) true vertical 8792 feet ORIGINAL Casing Length Size Cemented Measured depth True vertical depth Conductor 110' 20" 2150# Poleset 110' 110' Surface 3750' 13-3/8" 2500 Sx CS III & 3800' 3496' 600 Sx Class G Production 9826' 9-5/8" 750 Sx Class G 9876' 8258' Liner 2057' 7" 550 Sx Class G 11642' 8744' Slotted Liner 1258' 4-1/2" Un cemented 12558' 8781' Pre Drilled Liner 1550' 2-3/8" Uncemented 13550' 8804' measured 4-1/2" Slotted Liner: Perforation Depth 11610- 12515'; 2-3/8" Pre Drilled Liner: 12031 - 13518' true vertical 4-1/2" Slotted Liner: 8742 - 8783'; 2-3/8" Pre Drilled Liner: 8782 - 8802' Tubing (size, grade, and measured depth) 4-1/2", 12.6#, L-80, Tubing @ 3810' MD; 3-1/2", 9.3#, L-80, Tubing @ 11299' MD. Packers and SSSV (type and measured depth) TIW Mod SS High Angle Mech Set Packer @ 11312' MD; Camco BAL-O ss~Jv'~L-;~, ,,~ ~.~,,it; ~'- 3. Stimulation or cement squeeze summary Intervals treated (measured) Intervals treated (measured) see attached Alas~¢a 0il .& Gas Cons. Cornmiss Representitive Daily Average Production or Injection Data OiI-Bbl Gas-Mcr Water-Bbl Prior to well operation 1170 16861 0 Subsequent to operation 1285 20368 0 Casing Pressure Tubing Pressure - 1123 841 I 15. Attachments 116. Status of well classification as: I Copies of Logs and Surveys run _ Daily Report of Well Operations _ X Oil _X Gas _ 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed ¢...A.,,1~L "~"h · ~ Title: Engineering Supervisor Form 10-404 Rev 06/15/88 Suspended _ Service _ Date %- Z 2- - ? '7 SUBMIT IN DUPLICATE 18-21A DESCRIPTION OF WORK COMPLETED TUBING PATCH INSTALLATION 4/15/97: RIH & set a 3-1/2" Eclipse Tubing Patch (1.812" ID) across GLM #1 at 3878 - 3898' MD (seal to seal). POOH. Rigged down. Placed the well on production & obtained a valid welltest. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG I Status of Well Classification of Service Well Oil X Gas Suspended__ Abandoned. Service__ 2 Name of Operator 7 Permit Number ARCO Alaska, Inc. 96-198 3 Address 8 APl Number P.O. BOX 100360, Anchorage, AK 99510-0360 ~, 50-029-21944-01 4 Location of well at surface~SIII;T~i~ 9 Unit or Lease Name 1219' FNL, 416' FWL, Sec 19, T11N, R15E, UM. ~. ~,,~)?.,';;-'-"~'i''..,:i PRUDHOE BAY UNIT At Top Producing interval ~' ' J'.': !';'; i 10 Well Number 1229' FSL, 4459' FWL, Sec 19, T11N, R15E, UM.._~(~-/~.~/,~.. ! 18-21A At Total Depth ~ ""i-:~'~i~: i~" i 11 Field and Pool 1048' FNL, 2618' FEL, Sec 29, T11N, R15E, UM. _,~F¢~.¢.-; PRUDHOE BAY FIELD 5 Elevation in feet (indicate KB, DF, etc.) 6 Lease Desighation and Serial No. 50' RKB ADL 28326 PRUDHOE BAY OIL POOL 12 Date Spudded 13 Date T.D. Reached 14 Date Comp., Susp., or Aband. 15 Water Depth, if offshore 16 No. of Completions 2/17/97 2/22/97 2/25/97 N/A 1 17 Total Depth (MD+TVD) 18 Plug Back Depth (MD+TVD) 19 Directional Survey 20 Depth where SSSV set 21 Thickness of Permafrost 14073' MD / 8792' TVD 14073' MD / 8792' TVD YES_X NO__ 1982' feet MD 1900' feet (approx) 22 Type Electric or Other Logs Run MWD, GR. 23 CASING, LINER AND CEMENTING RECORD SETTING DEPTH CASING SIZE WT. PER FT. GRADE TOP BO'FrOM HOLE SIZE CEMENTING RECORD AMT PULLED 20" 91.5# H-40 Surf 110' 30" 2150# Poleset 13-3/8" 68# K-55/L-80 Surf 3800' 17.5" 2500 Sx CS II1 & 600 Sx Class G 9-5/8" 47# L-80 Surf 9876' 12.25" 750 Sx Class G 7" 29# L-80 9585' 11642' 8.5" 550 Sx Class G 4-1/2" 11.5# L-80 11300' 12558' 6" Uncemented 2-3/8" 4.6# FL4S 12000' 13550' 2.8" Uncemented 24 Perforations open to Production (MD+TVD of Top and Bottom and 25 TUBING RECORD interval, size and number) SIZE DEPTH SET MD PACKER MD 4-1/2" Tbg 3810' 11312' 4-1/2" Slotted Liner: 3-1/2" Tbg 11299' 11610 - 12515' MD; 8742 - 8783' TVD. 26 ACID, FRACTURE, CEMENT SQUEEZE, ETC. 2-3/8" Pre-Drilled Liner: DEPTH INTERVAL MD AMT & KIND MATERIAL USED 12031 - 13518' MD; 8782 - 8802' TVD; (2) - 3/8" holes per ft. 27 PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) 3/8/97 Flowing Date of Test Hours Tested PRODUCTION FOR OIL - BBL GAS - MCF WATER - BBL CHOKE SIZE GOR 3/10/97 4 TEST PERIOD __ 10115 Flow Tubing Press Casing Pressure CALCULATED OIL - BBL GAS - MCF WATER - BBL OIL GRAVITY - APl (corr) 1227 24 HOUR RATE _X 1134 11470 17 28 CORE DATA Brief description of ]ithology, porosity, fractures, apparent dips and presence of oil, gas, or water. Submit core chips. * This !0-407 submitted as directed per the 10-401 form approved 12/27/96 (Permit # 96-198). ,"4PR R q 1997 4laska 0il .& Gas 60~1s. uC0mmiss~, Form 10-407 Submit in duplicate ORI¢I k NAME Top Sadlerochit GEOLOGIC MARKERS MEAS DEPTH 9970' TRUE VERT DEPTH 8303' FORMATION TESTS Include interval tested, pressure data, and fluids recovered and gravity, GOR, and time of each phase, N/A 31 LIST OF ATTACHMENTS Summary of 18-21A Coil Tubing Wellbore Extension Drilling Operations. 321 hereby certify that the foregoing is true and correct to the best of my knowledge Signed ~::2~__ '"'~ ' ~ Enqineering_ Supervisor Date INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and Icg on all types of lands and leases. 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 18-21A DESCRIPTION OF WORK COMPLETED CTU WELLBORE EXTENSION DRILLING OPERATIONS 2/1 4/97: MIRU CTU. NU BOP & PT equipment. 2/1 5/97: Bullheaded 250 bbls 2% KCl Water to kill the well. MU 2.8" milling BHA. 2/1 6/97: Fullbore loaded the well w/FIo Pro, then RIH w/milling BHA. Milled on packoff bushing & guide shoe from 12515' to 12545' MD. POOH w/BHA. RIH w/milling BHA. 2/1 7/97: Continued mill out through the shoe & drilled into the formation to 12565' MD. POOH w/BHA. MU & RIH w/drilling BHA. Drilled a 2.8" horizontal wellbore extension to 12627', then reran GR pass from 12400 to 12625' MD. Resumed drilling to 12767' MD. 2/18/97: Drilled to 12945', then circulated in new FIo Pro & drilled to 13346' MD. 2/19/97: Drilled to 13420', then washed & backreamed hole to 11435' MD. 13556' MD. Wiper tripped to 12580' then RIH & drilled to 13767' MD. RIH & resumed drilling to Wiper tripped to 9000'. 2/20/97: POOH w/BHA; stuck at 8832' & 8770' but pulled free. RIH w/2.8" milling BHA. Milled & washed hole down to 12640' MD. POOH w/BHA; no overpulls. MU & RIH w/drilling BHA. Reamed to bottom & continued drilling to 13783' MD. 2/21/97: Drilled to 13975' MD. Attempted to drill deeper; no progress. Backreamed hole to liner shoe at 12558' MD. RIH to bottom & attempted to drill ahead; no progress. Circulated in new FIo Pro, then drilled to 13966' MD. Hydraulics limited WOB and drilling progress. Pumped Hi-Vis sweep. 2/22/97: Drilled to 14035' then short tripped to 12250' MD. RIH & drilled to 14073' MD, then decided to TD well due to WOB limitations. POOH w/BHA laying in Hi-Vis pill. MU liner assembly. 2/23/97: RIH w/2.375" drilled liner assembly. Sat liner down at 13570' MD; could not work deeper. POOH w/liner, set BOP slips, set injector on deck, & RIH w/jointed 1" washpipe. Landed seal stinger, opened slips, & RIH w/1556' liner assembly while circulating Hi-Vis lube pill. Sat down liner at 13219' MD. Worked liner past tight spots to 13550' MD while circulating lube pill; couldn't work deeper. Released from liner to leave TOL at 12000' MD. POOH & circulated out FIo Pro from 11600' w/2% KCl Water. 2/24/97: LD 1" washpipe, then RIH to 2500' & FP well w/Methanol. 2/25/97: PT tree. Released Nabors 3S. POOH. Set BPV, RD CTU, & NU tree. Placed the well on production & obtained a valid welltest. 18-21A DIRECTIONAL SURVEY API500292194401 Survey Type: SINGLE SHOT Company: TELECO Survey Date: 5/18/89 Survey Top: 0' MD Survey Btm: 12,294' MD Kickoff Depth: 1,226' MD Max. Dogleg: 26.8"/100' @ 13,498' MD Survey Type: MEASURED WHILE DRILLING Company: ANADRILL Survey Date: 2/23/97 Survey Top: 12,386' MD Survey Btm: 14,060' MD Avg. Angle below KOP: 51 ° Max. Angle: 94.7° @ 12,580' MD MD TVD SS INCLINE AZIMUTH DOGLEG ASPX ASPY 0 0.00 0.00 0.00 0.0 692,182.6 5,960,658.7 924 924.00 0.00 125.60 0.0 692,182.6 5,960,658.7 1,045 1 044.96 2.60 115.50 2.2 692,185.1 5,960,657.6 1,136 1 135.73 5.50 129.90 3.4 692,190.4 5,960,654.0 1,226 1 225.11 7.90 128.90 2.7 692,198.7 5,960,647.6 1,319 1 415 1 511 1 607 1 702 1 830 1 925 2 021 2 178 2311 2 629 3 008 3 328 3 677 4 123 4 471 4 798 5 105 5486 5 890 6 173 6 458 6 771 7 085 7401 7 745 8 025 8213 8434 8 621 8 809 8 997 9 188 9 375 9 563 316.93 411.15 504.64 597.21 687.96 808.61 896.14 982.86 121.40 235.64 506.64 828.40 099.03 393.04 765.18 054.19 326.09 581.50 902.30 242.06 -50.00 874.OO 994.96 1 085.73 1 175.11 1 266.93 1 361.1 5 1 454.64 1 547.21 1 637.96 1,758.61 1 846.14 1 932.86 2 071.40 2 185.64 2 456.64 2.778.40 3.049.03 3.343.04 3.715.18 4 304.19 4 276.09 4 531.50 4 852.30 5,192.06 10.30 129.30 2.6 692,210.3 5,960,638.6 11.80 127.50 1.6 692 225.0 5,960,627.6 14.40 126.40 2.7 692 242.8 5,960,615.0 16.30 125.70 2.0 692 263.7 5,960,600.6 18.10 124.30 1.9 692 287.1 5,960,585.0 20.90 128.20 2.4 692 322.1 5,960,560.6 24.80 128.20 4.1 692.351.7 5,960,538.5 26.00 127.10 1.3 692 384.9 5,960,514.2 30.10 122.90 2.9 692,446.5 5,960,473.6 31.50 125.70 1.5 692,503.7 5,960,436.7 31.60 126.80 0.2 692,640.3 5,960,341.8 32.20 126.40 0.2 692,804.1 5,960,226.5 32.30 126.40 0.0 692,944.1 5,960,128.7 32.90 126.80 0.2 693,097.9 5,960,020.5 34.00 124.00 0.4 693,301.9 5,959,883.4 33.70 124.00 0.1 693,465.3 5,959,779.1 33.80 121.90 0.4 693,620.2 5,959,684.3 33.60 122.20 0.1 693,766.8 5,959,597.6 31.70 125.00 0.6 693,940.9 5,959,488.4 33.80 125.00 0.5 694,123.1 5,959,367.7 476.40 5,426.40 34.40 123.60 0.4 710.28 5,660.28 35.30 122.90 0.4 965.41 5,915.41 35.50 123.00 0.1 220.73 6,170.73 35.70 121.90 0.2 479.26 6,429.26 34.50 122.60 0.4 764.45 6,714.45 33.50 120.80 0.4 998.61 6,948.61 33.00 122.00 0.3 156.11 7,106.11 33.20 120.00 0.6 338.45 7,288.45 35.60 121.90 1.2 490.31 7,440.31 35.80 122.00 0.1 638.53 7,588.53 40.10 124.70 2.5 773.56 7,723.56 48.00 127.80 4.4 894.37 7,844.37 53.50 129.90 3.0 002.29 7,952.29 56.00 130.60 1.4 102.45 8,052.45 59.60 130.30 1.9 694.256.4 694.394.8 694.549.4 694.706.1 694.862.2 695028.4 695.161.4 695.250.8 695.359.4 695.453.4 695.551.5 695.658.6 695.776.0 695.895.0 696018.6 5,959,281.7 5,959,195.9 5,959,101.2 5,959,007.1 5,958,914.1 5,958,817.3 5,958,740.7 5,958,690.1 5,958,628.6 5,958,573.2 5,958,512.0 5,958,437.3 5,958,347.5 5,958,251.8 5,958,151.8 9,800 8,220.77 8,170.77 60.50 130.00 0.4 696,178.9 5,958,023.4 Page 1 of 3 18-21A DIRECTIONAL SURVEY MD TVD SS INCLINE AZIMUTH DOGLEG ASPX ASPY 10,035 8,333.80 8,283.80 62.00 129.00 0.7 696,341.2 5,957,896.5 10,219 8,415.75 8,365.75 65.10 128.50 1.7 696,472.3 5,957,796.7 10,407 8,491.76 8,441.76 67.20 127.80 1.2 696,610.2 5,957,694.0 10,595 8,560.20 8,510.20 70.10 127.50 1.6 696,751.5 5,957,590.6 10,785 8,618.74 8,568.74 74.00 127.00 2.1 10,878 8,643.28 8,593.28 75.40 127.50 1.6 10,973 8,666.10 8,616.10 76.80 127.10 1.5 11,067 8,686.44 8,636.44 78.20 127.50 1.6 11,162 8,704.57 8,654.57 79.80 126.80 1.8 11,257 11,351 11,447 11 536 11 639 11 726 11 826 11 920 12.015 12,109 12 203 12 294 12 386 12 516 12 580 12 627 12 657 12 687 12717 12,747 12,777 12,808 12 837 12.867 12.897 12 927 12 957 12.989 13017 13 O47 8,719.02 8,669.02 82.70 127.10 3.1 8,728.60 8,678.60 85.60 127.10 3.1 8,734.71 8,684.71 87.10 125.70 2.1 8,738.75 8,688.75 87.70 126.10 0.8 8,744.23 8,694.23 86.20 126.40 1.5 8,750.15 86.00 126.40 0.2 8,757.13 86.00 126.40 0.0 8,764.34 85.20 126.40 0.9 8,772.95 84.40 127.50 1.4 8,780.98 85.80 127.50 1.5 8,786.31 8,788.85 8,788.69 8,783.47 8,778.89 8,775.40 8 774.33 8 774.83 8 775.77 8 775.80 8 775.70 8 776.02 8 776.53 8,777.94 8,780.16 8,782.57 8,784.69 8,786.50 8,788.40 8,790.94 8,700.15 8,707.13 8,714.34 8 722.95 8 730.98 8 736.31 8 738.85 8 738.69 8 733.47 8 728.89 8 725.4O 8 724.33 8.724.83 8.725.77 8 725.80 8 725.7O 8 726.02 8 726.53 8 727.94 8 730.16 8 732.57 8 734.69 8 736.50 8 738.40 8 740.94 87.70 127.80 2.1 89.10 127.10 1.7 91.10 127.10 2.2 93.50 127.10 1.9 94.70 127.20 1.9 93.80 121.90 11.4 90.30 123.00 12.2 87.80 122.70 8.4 88.60 121.90 3.8 91.30 121.90 9.0 89.10 123.00 8.2 89.70 128.40 17.53 88.30 130.20 7.9 86.30 131.70 8.3 85.20 135.60 13.5 85.60 139.20 12.0 86.30 142.20 10.2 87.20 145.00 9.2 85.00 145.40 8.0 85.30 146.80 4.8 696 898.1 696 970.8 697 045.6 697 120.0 697 195.8 697 272.2 697 348.2 697 426.7 697 500.1 697 584.5 697 655.7 697 737.5 697 814.3 697 891.3 697 967.1 698 042.8 698 116.4 698 191.2 698.296.7 698.348.6 698.387.8 698,413.5 698,439.2 698,464.9 698,490.8 698,516.5 698,542.1 698,565.0 698,588.1 698,610.3 698,631.1 698,650.6 698,670.2 698,686.7 698,704.0 5,957,485.0 5,957,432.5 5,957,378.5 5,957,324.8 5,957,270.4 5,957,215.9 5,957,161.4 5,957,106.6 5,957,056.3 5,956,997.6 5,956,947.9 5,956,890.8 5,956,837.1 5,956,782.2 5,956,727.1 5,956,671.7 5,956,618.3 5,956,564.7 5,956,489.0 5,956,451.8 5,956,426.2 5,956,410.8 5,956,395.1 5,956,379.8 5,956,364.6 5,956,349.1 5,956,331.7 5,956,313.9 5,956,294.9 5,956,274.8 5,956,253.3 5,956,230.6 5,956,205.4 5,956,182.9 5,956,158.5 13,077 13,107 13,137 13,167 13,197 8,792.98 8,793.95 8,794.97 8,796.80 8,798.74 8,742.98 8,743.95 8,744.97 8,746.80 8,748.74 86.90 151.60 16.8 89.40 1 54.00 11.6 86.70 152.30 10.6 86.30 150.70 5.5 86.30 149.30 4.7 698,720.0 698,734.4 698,748.6 698,763.6 698,779.2 5,956,133.2 5,956,106.9 5,956,080.5 5,956,054.6 5,956,029.0 13 13 13 13 13 13 13 227 253 295 324 356 386 417 8,800.34 8,801.00 8,801.1 5 8,801.43 8,802.10 8,802.47 8,802.09 8,750.34 8,751.00 8,751.1 5 8,751.43 8,752.10 8,752.47 8,752.09 87.60 148.60 4.9 89.50 147.10 9.3 90.10 143.90 7.8 88.80 138.90 17,81 88.80 136.70 6.9 89.80 134.20 9.0 91.60 133.50 612 698 795.3 698 809.7 698 834.4 698 853.0 698 875.1 698 896.7 698 919.6 5,956,003.8 5,955,982.2 5,955,948.2 5,955,926.0 5,955,902.8 5,955,882.0 5,955,861.1 Page 2 of 3 18-21A DIRECTIONAL SURVEY MD TVD SS INCLINE AZIMUTH DOGLEG ASPX ASPY 13,443 8,801.48 8,751.48 91.10 130.60 11.3 698 939.3 5,955,844.2 13,477 8,801.06 8,751.06 90.30 128.40 6.9 698 966.1 5,955,823.2 13,498 8,801.52 8,751.52 87.20 123.70 26.80 698 983.4 5,955,811.3 13,537 13,567 13,597 13,780 13,981 14,060 8,803.22 8,803.95 8,804.05 8,799.55 8,792.18 8,791.52 8,753.22 8,753.95 8,754.05 8,749.55 8,742.18 8,741.52 87.80 89.40 90.20 92.60 91.55 89.40 121.60 118.00 117.30 101.10 78.40 72.80 5.6 13.1 3.5 9.0 11.3 7.6 699 016.7 699 043.1 699 070.0 699 243.7 699443.1 699 519.1 5,955,791.2 5,955,776.9 5,955,763.7 5,955,708.1 5,955,714.1 5,955,735.7 Page 3 of 3 ~PI: 50-029-21944-01 AF~: APl170 WELL ).{F, AI) LOCATION: LAT(li/-S) 0.00 D~(F.,/-W) 0,.00 Ut)~T, S~CT. DRIGIH: LAT(N/-S)-4246.40 D~(~/-W) 5902,00 AZIRJl'H ~ Vl~. SL~'~. DRIGIH TD TARG~'T IS 115.60 tI£ IH POIHT(TIP) : ~ l/f~l' I)tFI'H IhNCI..T. hW~TI~ I.ATrruI)£(~-S) 1238~.00 8738,70 91,10 127.10 -4246.40 ~ P_~?I01~ MRASURI~) INTERVAL VERTICAL Vhl~TI~ STATION AZIMUTH LATITUDE DEPARTt~q~ DISPI.ACEMID~r a~ AZIMUTH DEPTH DIe'TH StL~TIO~ INt].N. N/-S E/-W de~/ f~ f~ f~ ft deg deg ft fr f~ deg lO~)ft 123~.00 0,0 ~738.70 0,00 91.10 127.10 -424~.40 5702.00 7270.87 I25,73 0,00 12516.00 130.0 ;8733.48 127.37 ?3.50 127.10 -4324.75 6005.59 7400.72 125.76 1.85 12580.00 64.0 6728.91 189.95 94.70 127.20 -4363.30 6056.48 7464.53 125.77 1 12627.00 47.0 8725.42 236.26 ?3.80 121.90 -4389.87 6095.07 7511.38 125.76 11.41 12657.00 30.0 6724.35 266.04 ?0.30 123.00 -4405.95 6120.36 7541.30 125.75 12.23 12687.00 30.0 3724.85 L*~.~O 87.80 122.70 -4422.22 6145.56 7571.26 125.74 8.39 12717.00 30.0 &725.79 325.60 8~.60 121.90 -4438.25 6170.90 7601.19 125.72 3.77 12747.00 30.0 6725.81 3b'5.42 91.30 121.90 -4454.10 6196.37 7631.12 125.71 9.00 12777.00 30.0 6725.71 385.22 89.10 123.00 -.M70.19 6221.68 7661.07 125.70 8.20 12808.00 31.0 6726.04 415.74 89.70 128.40 -4468.2.7 6246.65 7692.05 125.70 17.53 12837.00 29.0 8726.54 443.94 88.30 130.20 -4506.64 6269.26 7720.99 125.71 7.66 12867.00 30.0 6727.95 472.86 86.30 131.70 -4b'26.28 6291.92 7750.83 125.73 8.33 12897.00 30.0 8730.18 ~01.33 85.20 I35.60 -4546.92 6313.56 7780.46 125.76 13.47 12927.00 30.0 8732.58 529.13 85.60 139.20 -4568.93 6333.60 7809.74 125.81 12.03 12957.00 30.0 6734.70 556.27 86.30 142.20 -4592.08 6352.75 7838.66 125.86 10.24 12989.00 32.0 ~.'~.52 584.53 87.20 145.00 -4617.60 6371.70 7869.10 125.93 9.18 13017.00 28.0 8738.42 608.86 85.00 145.40 -4640.73 6387.65 7895.47 126.00 7.98 13047.00 30.0 6740.96 634.67 85.30 146.60 -4665.b'5 6404.32 7923.55 126.07 4.76 13077.00 30.0 6743.00 659.65 86.90 151.60 -4691.25 6419.64 7951.07 126.16 16.83 13107.00 30.0 6743.97 683.59 89.40 154.00 -4717.91 6433.34 7977.88 126.25 11.55 13137.00 30.0 8744.99 707.42 86.70 152.30 -4744.66 6446.88 8(X54.63 126.35 10.63 13167.00 30.0 8746.82 731.74 86.30 150.70 -4770.97 6461.17 8031.74 126.44 5.49 13197.00 30.0 ~748.76 756.~ 86.30 149,30 -4796,90 6476,14 8059.19 126,53 4,66 13227.00 30.0 6750.36 781.58 87.60 148.60 -4822.56 6491.59 8086.89 126.61 4.92 13253.00 26.0 8751.01 803.61 89.50 147.10 -4844.57 6505.42 8111.12 126.67 9.31 13295.00 42.0 83'51.16 840.09 90.10 143.90 -4879.18 6529.20 8150.~ 126.77 7.75 13324.00 29.0 S751.44 666.23 88.80 138.90 -4901.63 6547.29 8178.93 126.82 17.81 I3356.00 32.0 6752.11 895.89 68.80 136.70 -4925.53 6568.78 8210.34 126.86 6.87 13386.00 30.0 375'2.47 924.14 89.80 134.20 -4946.91 6589.82 8240.00 126.90 8.97 13417.00 31.0 6752.10 ?b'3.61 91.60 133.50 -4968.38 6612.17 8270.77 126.92 6.23 13443.00 26.0 67'51.48 978.56 91.10 130.60 -4985.79 6631.47 8296.66 126.94 11.31 13477.00 34.0 8751.07 1011.59 90.30 12.8.40 -5007.41 ./-,557.70 8330.62 126.95 6.88 13498.00 21.0 6751.53 1032.24 87.20 123.70 -5019.76 6674.67 8351.60 126.95 26.80 13537.00 39.0 6753.23 1070.92 87.80 121.60 -5040.78 6707.48 6390.45 126.93 5.59 13567.00 30.0 6753.96 1100.84 89.40 118.00 -50b'5.68 6733.50 8420.21 126.90 13.13 13597.00 30.0 ~7S4.07 1130.82 ?0.20 117.30 -50~9.60 6760.07 8449.82 126.87 3.~ 13627.00 30.0 8~753.44 1160.81 92.20 114.70 -5082.75 6787.02 8479.27 126.83 10.93 ..~ 13657.00 30.0 ~7b'2.00 1190.76 ?3.30 114.00 -5095.10 6814.32 8508.53 126.79 4.35 13687.00 30.0 ~.750.48 1220.63 92.50 109.00 -5106.08 6842.19 8537.43 126.73 16.86 13717.00 30.0 ~49.14 1250.39 92.60 109.00 -5115.64 6870.53 8.'565.98 126.67 0.31 PE~)4~LIU~) I~ UER?ICAL UER~ICAL ~A?ION AZI~EKKH LATI?UDE D~~ DISPL~CE3~4T at AZI~Ull4 DI~I~rH DI~IH SEC?ION ft ft ft ft deg deQ ft ft ft deg 13748.00 31.0 8747,66 1381.00 ?2,90 105.40 -5124.~ 6900.10 8595.17 126.60 13780.00 32,0 8746.12 1312.I9 ?2.60 101.10 -5132,32 6731.21 .~624.52 126,52 13803.00 23.0 8744.60 1334.27 ?5.00 ?~.20 -5136.~ 6953.79 ,5645.08 126.45 13837.0O 34.0 8740.75 1366.31 ?8.00 ?5.30 -5140.63 ,5987,2? 6674.58 126.34 13854.00 17.0 8738.41 1381.90 ?7.80 ?3.50 -5141.92 7004.08 8668,07 126.28 I~_~_3.00 2?,0 8734,45 1408.16 77,?0 8?.50 -5142,67 7032.80 8712.48 126,I8 13931.00 48,0 8728,0~ 1447,76 97,30 84,10 -5140,01 7080,28 8749.2? 125,98 13(751.00 20,0 8725,81 1466,53 ?5,80 82,70 -5137.73 7100.02 8763.?3 125,89 13981.00 30,0 8723,~0 1470,97 71,50 78.40 -5132,81 712~,54 6784.?~ 125,75 14017.00 36,0 8723.40 1519,06 ~,10 75.99 -5124,81 7164,63 8~08.83 125,58 14060.00 43,0 8723,59 1551.30 69,40 72,~ -5113.21 7206,03 8~,3-~5.~ 125.36 SURt;EY AT 14060,00' t~qS PfU]Jt~'TED ?O THE BIT AT TD. A WASHI)(M~N WA~S ~ Iq] TIE ~ DEPTH IN TO A ~ RAY FLAG ~ICH SHIFItrl) THE D]~I14 DOll4 +13' AT TD. ~ FINAL TD OF TH~ WELL ~AS 14073.00'. ~ FII~ DOt~ N(K REFI2C~ THIS CHP~E. D~ lOOft 11.64 13,45 13,30 !4,41 10,55 13,&7 11,22 10,23 20.25 7,96 P~E NO, CO,ANY ARCO ALASKA INC WI~LL ~ DS 18-21A IZIr. J%TION 1 LIS~_.IR~ FII~LD LOrJ%TION 2 N~B~ ALASKA D~: 23-1~B-97 MASTIC DECLINATION 28°?0 ~PI: At~,, ~I,L ~E~BI~ 0 ft 1t~J~6,0 12516.0 1~:~0.0 12627.0 12657,0 T~P INCD~ ft ~ 873B,70 8733,48 2,40 8~8,91 1.20 8725,42 -0,90 6724,35 -3,50 ANALYSIS CUItlNC CH(; I RAT AZ~ CHGCLIIMAZIq C~ deg deg/lOOft deg deg ~ _RAT~ deg/lOOft 0.00 0,00 0,00 0,0O 0,00 2.40 1.65 0,0O 0,00 0.00 3,60 1,67 0,10 0,10 0,16 2,70 -t,91 -5.30 -5,20 -11,28 -0,80 -tl,67 1,10 -4,10 3,67 CU3SL~ Tf~L I~CE DI~ DI~ ft d~ deg/lOOft deg/lOOft~*2 0,00 0,00 0,0O 0,0O -25,45 0,58 1,85 1,42 -38,01 4,65 1,88 0,05 -45,14 99,46 11,41 20,27 0,00 0.00 12,23 2,74 12687,0 12717.0 12747,0 12777,0 12806,0 8724,85 -2.50 8/25,79 0.80 8725,81 2.70 8725,71 -2.20 8726,04 0,60 -3.30 -6.32 -0.20 -4,40 -1,00 -2.~0 2.67 -0,~ -5,20 -2,67 0.20 9.00 0,00 -5,20 0,00 -2.00 -7,33 1.10 -4.10 3.67 -1,40 1,94 5.40 1,30 17,42 -52,29 ~73,18 8,39 12,78 -b'5,69 45,00 3,77 15,41 -~,87 0,00 9,00 17,43 -62.25 153.43 8.20 2,67 -48.61 162,55 17,53 30,09 12837.0 12867,0 12897,0 12927,0 12957,0 8726,54 -1,40 6727,95 -2,00 8720,18 -1.10 8732,58 0,40 8734,70 0.70 -2,&O -4.&3 1,80 3,10 6.21 -4.80 -6,67 1,50 4,60 -5.90 -3,67 3,90 8,50 13,00 -5.50 1.33 3,60 12,10 12,0O -4.60 2,33 3,0O t5,10 10,00 -74,44 I?.7,90 7,86 32,32 -62,27 143,20 8,33 1,56 -91,44 105,93 13,47 17,14 -102,45 63,79 12,03 4,7? -67,68 83.69 10.24 5.97 12989,0 13017,0 13047.0 13077,0 13107,0 8726,52 8738,42 -2,20 6740,96 0,30 8743,0O 1,60 8743,97 2,50 -3.90 2,81 2,80 17,90 8,~ -6,10 -7,&6 0,40 18,30 1.43 -5,&O 1,00 1.40 19,70 4,67 -4,20 5,33 4,80 24,50 16,00 -1.70 8,33 2,40 26,90 8,0O -129,95 72,24 9,18 3,23 -143,66 169.75 7,98 4,26 -158,74 77,92 4,76 10,76 -175,21 71,70 16,83 40,2~ -115,05 76,94 11,55 17,61 13137.0 13167.0 13197.0 13227.0 13~.0 8744.~ -2,70 874&82 -0,40 8748,76 0,00 &~0.26 1,30 8751,01 1,90 -4,40 -9,00 -1,70 25,20 -5,&7 -4.&O -1,33 -1,60 23,60 -5,33 -4,80 0,0O -1,40 22,20 -4,67 -3,50 4,33 -0.70 21,50 -2,33 -I.60 7.31 -1.50 20.0O -5.77 -211.44 147.84 10.62 3.05 -228.92 104.11 5,49 17.15 -245,74 90.05 4.66 2.77 -262,12 28.2~ 4,92 0.~ -193.25 43,86 9.31 16o88 13295,0 13324,0 13356,0 1~_'~__,0 13417,O 8751,16 0,60 8751,44 -1 6752,11 0,00 8752,47 1.00 8752,10 1,60 -!,00 1.43 -3.20 16.&O -7,62 -2,30 -4,48 -5,0O I1.60 -17.24 -2,20 0,00 -2.20 9,60 -6,88 -1.30 3.32 -2,50 7,10 -8,33 0,50 5.61 -0,70 6,40 -2,26 -296,72 79.3? 7,75 3,71 -309,25 104,59 17,81 34,70 -321,22 ?0,02 6,87 34,19 -321,22 68,21 8,97 7,00 -~.92 ~.30 6,~ 8.85 13443,0 8751,48 -0.50 13477.0 &751,07 -0,~ 13498,0 8751,53 -3,10 13537.0 8753,23 0.60 135~7,0 8753.96 1.60 0,00 -i.92 -2,90 3,50 -11,15 -0,80 -2,35 -2,20 1,30 -6,47 -3,90 -14,76 -4,70 -3,40 -22,38 -3,20 1,54 -2,10 -5,50 -5,38 -!.70 5,22 -3.60 -9.10 -12.00 -348,19 ?9,75 11,31 19,56 -356,25 109,97 6,88 13,03 -359,98 123,45 26,80 94,85 -364,62 74,09 5.59 54.38 -340,92 21,22 13,13 25,11 135T7.0 8754.07 0.80 13&27,0 8753,44 2,00 13657,0 87b'2,00 1,10 13&07,0 6750,48 -0.60 13717.0 8747,14 0,10 -0.90 2.67 -0,70 -9,80 -2,23 1.10 6,67 -2,60 -12,40 -8,67 2,20 3,67 -0,70 -13,10 -2,23 1.40 -2,67 -5,0O -18,10 -16,67 1.50 0,33 0,0O -18,10 0,00 -:367,69 41,15 3,54 31,95 -3&7,79 52,40 10,93 24,64 -367,03 32,44 4,35 21,96 -2&4,79 98,97 16,&6 41,71 -366,72 &6,08 0,31 55,16 SU~ ANALYSIS w~ CIROJI.AR AR~ PLql4OI)~=~x ft ft deg decj deo/lOOft deq de<) TU~ RATE CLOSL~ TC~ FA~£ DLS DLS~ deg/. lOOft ft deg deg/lOOft deq/lOOft~*2 13748.0 8747.66 0.30 1.80 0.97 -3,60 -21,70 13780.0 8746,12 -0.20 1.50 -0.94 -4o30 -26,00 13803.~ 8744.60 2.40 3.?0 10,43 -1.70 -27.90 13837.0 8740.75 3,00 6.90 8.82 -3.70 -31.80 13854.0 8738,41 -0.20 6.70 -1,18 -1,80 -33,60 -11.61 -3S6.61 65.15 11,64 36,b'5 -13.44 -349,67 93.89 13,45 5,67 -8.26 -343.48 3~.2~ 13.30 -11,47 -332,74 52,05 14.41 3,28 -10.59 -361.24 0,00 10.55 22.69 12Lq$3.0 8734,45 O. 10 6,80 0,34 -4,00 -37,60 iS~931.0 8728,09 -0.60 6,20 -1,25 -5,40 -43,00 1S751.0 8725,81 -1.50 4,70 -7.50 -1.40 -44,40 I~81.0 8723,90 -4,30 0,40 -14,33 -4,30 -48,70 14017.0 8723,40 -1.40 -1,00 -3o89 -2,50 -51.20 -13,79 -314.77 88,28 13.67 10,74 -11,25 -291,71 ?6.03 11,22 5.10 -7,00 -281.07 137,08 10,23 4,96 -14,33 -263.79 134,70 20,25 33,40 -6,94 -3T.6.59 96.28 7,96 34,14 14060.0 8723.5? -0.70 -1,70 -1.63 -3,10 -54,30 -7,21 -212.85 102.73 7.3? 1.32 NOT~: g~ AT 14060.00' WAS PROJE~ TO THE BIT AT TO. A ~ WAS DON~ 'lq] TIE TH~ DEPTH IN TO A C~ RAY FLAG ~ICH SHII~ l'~ DB:TH DO~ +13' AT TO. ~ FINAL TI) OF TH~ WtiLL WAS 14073,00'. ~ ~ FI~ I)0~ NOT ~ THIS TONY KNOWLE$, GOVERNOR ALASKA OIL AND GAS CONSERVATION COMMISSION 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 December 27, 1996 Erin Oba, Engineering Supervisor ARCO Alaska, Inc. P O Box 100360 Anchorage, AK 99510-0360 Re: Well No.: Company Permit No: Surf Loc Btmhole Loc Prudhoe Bay Unit 18-21A ARCO Alaska, Inc. 96-198 1219'FNL, 416'FWL, Sec. 19, T1 iN, R15E, UM 1051 'FNL, 2148'FEL, Sec 29, T1 IN, R15E, UM Dear Ms. Oba: Enclosed is the approved application for permit to re-drill the above referenced ~vell. The permit to re-drill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not 'authorize conducting re-drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25.035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling a new hole. Notice may be given by contacting the Commission's petroleum field inspector on the North Slope pager at 659- 3607. Sincerely, Tuckerman Babcock Commissioner BY ORDER OF THE COMMISSION dlf/encl c: Dept ofFish & Game, Habitat Section - w/o encl Dept of Environmental Conservation - w/o encl Steve McMains - AOGCC STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 2O AAC 25.005 la. Type of Work Drill __ Redrill X lb. Type of Well Exploratory__ Stratigraphic Test _ Development Oil x__ Re-Entry__ Deepen X Service _ Development Gas __ Single Zone x~ Multiple Zone _ 2.. Name of Operator 5.Datum Elevation (DF or KB) 10. Field and Pool ARCO Alaska, Inc. RKB 50' 3. Address 6. Properly Designation P. O. Box 100360, Anchorage, AK 99510-0360 ADL 28326 Prudhoe Bay/Prudhoe Bay Oil 4. Location of well at surface 7. Unit or property Name 11. Type Bond (see 20 ,&AC 25.025) 1219' FNL, 416' FWL, Sec 19, T11N, R15E, UM. Prudhoe Bay Unit Statewide At top of productive interval 8. Well number Number 1229' FSL, 4459' FWL, Sec 19, T11N, R15E, UM. 18-21A #U-630610 At total depth 9. Approximate spud date Amount (Proposed) 1051' FNL, 2148' FEL, Sec 29, T11N, R15E, UM. January, 1997 $200,000 12. Distance to nearest 13. Distance to nearest well 14. Number of acres in properly 15. Proposed depth (MD and TVD) property line No Close Approach 14470' MD / 8780' TVD 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035(e)(2)) kickoff depth N/A Maximum hole angle 94° Maximum surface 2800 psig At total depth (TVD) 3500 psig 18. Casing program Setting Depth size Specification Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 2-3/4" 2-3/8" 4.6 L-80 FL4S 2030' 12450' 8735' 14470' 8780' N/A (Slotted Liner) 19. To be completed for Redrill, Re-entry, and Deepen OperationS.Present well condition summary ~)~ Total depth: measured 12580 feet Plugs(measured) true vertical 8780 feet Effective depth: measured 12515 feet Junk (measured) true vedical 8783 feet , Casing Length Size Cemented Measured depth me~/enical e~ Conductor 1 1 0' 2 0" 2150 Cf: Poleset 1 I 0' 1 1 0' Surface 3750' 13-3/8" 2500 Sx CS III, 600 Sx CI G, 3800' 3498' Liner 2057' 7" 550 Sx CIG 1 1 642' 8745'~../ Slotted Liner 1258' 4-1/2" 12558' 8782 Perforation depth: measured Slotted Liner: 11610 - 12515' true vertical Slotted Liner: 8742 - 8783' 20. Attachments Filing fee ~x Property plat __ BOP Sketch ~ Diverter Sketch _ Drilling program Drilling fluid program__ Time vs depth pict__ Refraction analysis __ Seabed report _20 AAC 25.050 requirements _ 21. I hereby certify that the foregoing is true and correct to the best of my knowledge ~¢.,~[~ ~,<j ? ~,~l 5'~¢~',/~ Wr-.~C'cJ ; 2~,~"./..~O~", Signed ~'~ /~,/~. ~ Titlle Engineering Supervisor Date Commission Use Only Permc~N~um b'~ ~ I APl number } Approval date1 ~.._~:~, See letter for -- ~' 50- O _,%,g---- '-3--.,/. 9/'"/_/-~ '- O,/ / "2~ '""¢~ ? cover other requirements Conditions of approval Samples required ~Y e s ~ N o Mud Icg required__ Y e s ~ N o Hydrogen sulfide measures _.~ Y e s N o Directional survey required __~ Yes __ N o Required working pressure for BOPE __ 2Mt __ 3 M · 5 M ' I 0 M ' I 5 M -/~3500 psi for CTU Other: Ong~na~ Signed By by order of Approved by Tuckerman Babcock Commissioner the commission Date Form 10-401 Rev. 7-24-89 Submit in triplicate DS 18-21A CT Extension and Completion Intended Procedure Objective: Directionally drill ~1800', 2-3/4" horizontal extension from the existing wellbore. Complete with 2-3/8" slotted liner. Intended Procedure' RU CTU/Nabors 3S. RIH and mill out shoe in 4-1/2" slotted liner. · Load well with +8.9 ppg polymer mud. Directionally drill ~1800' of 2-3/4" horizontal hole to access Romeo reserves. · Run 2-3/8" slotted liner to TDo · RD CTD, return well to production. December 12, 1996 DS 18-21A Proposed Wellbore Sketch Extension of Wellbore & Completion 4-1/2" Camco BaI-O Nipple 3=1/2"' Otis "X" Nipple 7" Liner top 9-5/8'" Shoe 9876' 1982' 8809' 9585' 4-1/2" Production Tubing 3=1/2" X 4-1/2" XO @ 3810' 3-1/2" Production Tubing 3-1/2" Camco GLMs 7" Liner Shoe 11,641' 4-1/2" Slotted Liner to 12,558' 2.75" Openhole +/-1800' 2.375" Slotted Line~ 11,3OO' MD TIW Overshot Seal Assy w/x nipple, SS Packer @ 11312' 2.375" TOL ~12,450' 12,558' TD +/- 14,400' DRILE _ DS 18-21 Ext Prudhem Buy, Alaska Grid North_ Tr.e (4..47) Planned .'Extension Existing Well PLANE OF VERT SECrn S55.69E 8700 -- -£ 8750 8800 ............. ["I-I,I-- 4000 4800 -5600 . , .... [-["1-'[ Vertical Section Scale 1 inch: 400 it O0 0 0 Scale 1 inch: 800 ff IIII _1_.I_ LI~ ~rd 1 Mt) 1_43~ 91.5~ -TI"I' 1-i .... L LLL DS t 8-21 Ext. Directional Plan $~-IL: 692,182.80 5,960,659,50 M.DEPTH ANGLE DIR ft deg deg 2386.00 91 .I 0 $54,36°E 12400.00 91 .:36 $54.38°E 2500.00 93.19 8~54.50°E 2579.86 94.65 $54.60°E 12600.00 94.20 $54.48'E C~L TVD V/$ N+/8- E+NV- ff ff ft fL It 0,00 8788.72 7270.82 -4094.04 6008.63 14,00 8788.42 7284.8t -4'!02.t9 6020.01 100.00 8784.46 7384.70 -4160.30 6101.29 79.86 8779.00 7464.36 -4206,50 6166~0 20.'~4 8777.44 7484.43 -4218.15 6182.55 12700,00 92,36553.88°E 100.00 12800.00 90.45 S53.28'E 100.00 12889.24 88.75S52.74°E 89.24 12900.00 88.75 S52.74'E t0.76 13000.00 88.75 S52.74°E 100.00 13100,00 88.75 E~52.74"E 100.00 13200.00 88.75 $52,74°E 100.00 13300.00 88.75 $52.74"E t00.{30 13400.00 88.75 $§£.74"E 100.00 13500.00 88.75 S52.74°E t00.01~ 13582.94 88.75 S52.74°E 82.94 13600.00 88.81S53.93"E 17.06 13700.00 89.16 $60.93°E 100.00' 13800.00 89.52 S67.92°E !00,00 13900.00 89.89 S74.91°E 100.00 14000.00 90.26 $81,90°E 100.00 14100.00 90.63 S88.89°E !00.00 t4200,00 90.99 N84.12'E 100.00 14300.00 91.33 N77.13°E 14357.82 91..46 N74.48°E 37.82 14400.00 91,46 N74.48°E 62.18 14477.63 91,46 N74.48°E 77.63 8771.66 7584.23 -4276.57 6263.50 8769.2t 7684.12 -4335.92 6343.94 876~84 7773.26 -4389,62 6415~1 8770.07 7784,00 -4396.13 6423.77 8772.26 7883~85 -4456.66 6503.35 8774.44 7985.69 ~,517.18 8582,92 8776.63 8083,53 -4577.71 6662.49 8778.81 8183.37 -4638.24 6742.06 8781.00 8285~ -4698,77 6821.63 87,83.19 8383,06 -4759.30 6901.20 8785.00 8465.87 -4809.50 6967.20 8785.36 8482.91 -4819.68 6989.88 8787.14 8582.79 -4873.47 7065.09 8788.30 8681.56 -4916~2 7155.22 8788.82 8777.76 -4948.48 7249.95 8788.69 8869.96 -4.968.57 7347.84 8787.91 8956,77 ~976.6D 7447.46 8786,50 9036,91 -4972.44 7,547,30 8784.47 9109.17 -4956.16 7645.88 8783,,5~ 9134.22 -4946.89 7682.53 8781.97 9174,33 -4930.26 7742.42 8780.00 9224.40 -4909.50 7817,20 D'LEG ASP X ASP Y 0O ft ff 0 698,191.43 5,956,565.&6 · 84 698,202.81 5,956,557.Sl .83 698,284.09 5,956,499.20 · 83 698,349.00 5,956,453,00 2 698,365,35 5,956,441.35 2 698,446.30 5,956,382.93 2 698,526.74 5,956,323.58 2 698,598.0~, 5,956,269,88 0 698,606,57 5,956,263.37 0 698,686.15 5,956,202.84 0 698,765,72 5,956,142.32 0 698,845.29 5,956,08~.79 0 698,924.85 5,956,021.26 0 699,004.43 5,9~5,960.73 0 699,084.00 5,,955,900.20 0 699,150.00 5,955,850.00 7 699,163.68 5,955,839.82 7 699,247.89 5,955,786.03 7 699,338.02 5,955,7¢?-88 7 699,432.75 5,955,711.02 7 699,530.64 5,955,690.93 7 699,630.26 5,955,682.90 7 699,730.10 5,955,687,06 7 699,828.68 5,955,703.34 7 iS90,86,5.33 5,955.712.61 0 699,925.22 5,955,729.24 0 700,000.00 5,955,750.00 Bottom Hore Closure 9231 ft 122,1" C T Drilling Wellhead Detail Head ~~_~~ Stuffing Box (Pack-Off), 10,000 psi Working Pressure 7 R~ser Methanol Injection i Otis 7' WLA Quick Connect - _ I ~'~ Annular BOP (Hydril),7-1/16" ID 5,000 psi working pressure I 2" Cutters or Combination Cutter/Blinds Slip/Pipe rams 2" Alignment Guide Flange-- 7-1/16", 5M Ram Type Dual ~' ~ Gate BOPE Flanged Fire Resistant Manual Valve Kelly Hose To Dual ~ ~ ChokeManifold Manual Valves Drilling spool 7-1/16", 5M by 7-1/16", 5M Ram Type Dual Gate BOPE Manual over Hydraulic 7-1/16" ID with Pipe/Slip Rams 0.458' ($.5") Manual Master Valve 2" Pump-In ~Tubing Hanger rl 9-5/8" Annulus 13-3/8" Annulus Fire Resistant Kelly Hose to Flange by Hammer Up 1/4 Turn Valve on DS Hardline 10' from Tree 60~40 Trplx ] Shop Fuol Boilers Water Muc Pump Room / Pipe rack Ext. Dowell Drilling Equipment Trailer Ext. Preferred Major Equipment Layout for CT Drilling in DS 18-21A WELL PERMIT CHECKLIST FIELD & POOL COMPANY WIELLNAME/Z~Z~/. /x~--7-~./,Z~ PROGRAtVI:expO dev~r~ servel wellbomseg Oann. disposal para mq GEOL AREA ?? ,,-) UNIT# /'.,/,/"~ .~<:::::3 ON/OFF SHORE INn'CLASS N N N N N N Sufficient acreage ~vaila~ie in drilling unit. ......... N If deviated, is welibore pb.t included ............. N Operator onty affected party .................. N Operator has appropriate bond in force ........... N Permit ca~ be issued without conservation order ..... N Permit can be issued wi~out administrative approval... N Can permit be approved before 15-day wait. ........ N ADMINISTRATION 1. Permit fee attached ...................... 2. Lease number appropriate ................... 3. Unique well name &nd number ................ 4. Well loc&ted in a defined pool ................. 5. Well located proper distance from dflg unit boundary .... 6. Well located proper distance from older wells ........ . 8. 9. 10. 11. A~R DATE / 12. REMARKS APPR DA -GEOLOGY .......... APP_R DATE 14. Conductor string provided ................... Y N 15. Surface casing protects all known USDWs .......... Y hi 16. CMT vol adequate to circulate on conductor & surf csg .... Y N 17. CMT vol adequate to tie-in long s~ing to surf csg ....... Y N ,, 19. Casing designs adequate for C, T. B & perma,frost. ..... 20. Adequate tankage or reserve pit. .............. 21. If a re-drill, has a 10403 for abndnmnt been approved. · . .--Y'-N--- 22. Adequate wellboresepa.mdonproposed ........... .(~N ~ ~ ~ //)/~'_ ~.~/ *T"~ .~- ~_ .~, "~,,j.._, 23. If diverter required, is it adequate ............... 24. Drilling fluid program scherr~ti¢ & equip list adequate .... (~)N 25. ElOPEs adequate ........................ ~ N 26. ElOPE press raQng adequate; test to "~~ psig.(~N 27. Choke manifold complies w/APl RP-53 (May 84) ....... (.,~N ,~.--.~ 28. Work will occur wi~out operation shutdown .......... (.~N 29. Is presence of H2S gas probable ............... L.Y.~N 30. Permit can be issued w/o hydrogen sulfide measures ..... Y N/,/ 31. Dat~ presented on potential overpressure zones ....... Y/ ./q.,//, / 32. Seismic analysis of shallow gas zones ............. /Y N ' ' ' 33. Seabed condi~on survey (if off-shore) .......... ./[. Y N 34. Com2ct name/phone for weekly progress repo~ ..../... Y N le..xptoratory ono'J GEOLOGY: ENGINEERING: COMMISSION: BEW DWJ JDH ~ JDN TAB Comments/Instructions: HOW4b- A.'~--QR~ my ~
