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HomeMy WebLinkAbout2005 Northstar Oil Pool Annual Reservoir Performance Report Northstar Field Northstar Oil Pool January 2005 through December 2005 2 Table of Contents A. Progress of Enhanced Recovery Project B. Voidage Balance by Month of Produced Fluid and Injected Fluids C. Summary and Analysis of reservoir pressure surveys within the pool D. Results and Analysis of Production and Injection Log surveys, tracer surveys, observation well surveys and any other special monitoring. E. Review of pool production allocation factors and issues over the prior year F. Review of Annual Plan of Operations and Development and Future Development Plans G. Status of wells shut-in for 365 days or more Attachment 1: Map of well Locations Attachment 2: Northstar Field 2005 Overview Statistical Summary, including corrected Statistical Summaries for 2001 – 2004 Attachment 3: Corrected Voidage Balance by Month of Produced Fluid and Injected Fluids – 2001 - 2004 Attachment 4: Northstar Field 2005 Reservoir Pressure Report, Form 10-412 3 A) Progress of Enhanced Recovery Project During 2005, two additional production wells (NS05 and NS28) were brought on line. The locations of these wells in addition to the other Northstar wells are shown in Attachment 1. Production and injection statistics are summarized in Attachment 2. Average oil production was 55,700 bopd and average gas injection was 454.5 mmscfd. During 2005, gas injection was just slightly less than reservoir voidage. At year end, the reservoir had an overall voidage replacement ratio of 0.996. 4 B) Voidage Balance by Month of Produced Fluid and Injected Fluids – 2005 2005 MonthOil, MRBFree Gas, MRBWater, MRBTotal Voidage, MRBYearCum, MRBCum since start-up, MRBFormation Gas, MRBImport Gas, MRBTotal Injection, MRBYearCum, MRBCum since start-up, MRBNet Injection, MRBYearCum, MRBCum since start-up, MRBJan-20054,7314,8063739,5379,537212,8337,9148428,7568,756212,018-781-781-815Feb-20053,9854,5893538,57418,111221,4087,2121,2088,42117,177220,439-153-935-969Mar-20054,8326,88440111,71529,827233,12310,07969410,77327,950231,212-942-1,877-1,911Apr-20054,3054,6163648,92138,748242,0447,4581,6049,06237,012240,274141-1,736-1,770May-20054,7234,7564359,47848,226251,5227,8691,7519,62046,632249,894141-1,594-1,628Jun-20054,0524,6243958,67656,902260,1997,3031,3898,69255,324258,58616-1,579-1,613Jul-20054,2335,1354009,36866,271269,5677,9331,5349,46764,791268,05499-1,480-1,514Aug-20054,0035,2263929,22975,500278,7967,8731,4969,36974,160277,422139-1,340-1,374Sep-20053,2884,2723117,55983,059286,3556,4401,3727,81281,972285,234253-1,087-1,121Oct-20054,2705,82741810,09893,157296,4538,6431,36610,00991,981295,243-89-1,176-1,210Nov-20054,0416,46136610,502103,659306,9559,1141,52110,634102,615305,877132-1,044-1,078Dec-20053,8256,1703839,995113,654316,9508,6761,2579,934112,549315,811-61-1,105-1,1392005 Totals50,28863,3664,592113,65496,51416,035112,549-1,105Produced FluidsInjected FluidsNet Injection (Injection - Production) Produced water (MRB) was removed from the Total Voidage (MRB) calculation for years 2001 through 2005. Corrected Voidage Balance by Month of Produced and Injection Fluids charts for 2001 to 2004 are shown in Attachment 3. 5 C) Summary and Analysis of reservoir pressure surveys within the pool Static bottom hole pressures collected in 2005 are summarized below. Well Date Extrapolated Pressure at -11,100' TVDss Datum, psia Data Source NS13 7-Jan-05 5,155 Cidra Data NS14 7-Jan-05 5,153 Cidra Data NS24 19-Jan-05 5,177 Cidra Data NS14 2-Feb-05 5,148 Cidra Data NS13 14-Feb-05 5,157 Cidra Data NS16 14-Feb-05 5,094 Cidra Data NS21 14-Feb-05 5,117 Cidra Data NS06 18-Feb-05 5,132 Cidra Data NS24 26-Feb-05 5,159 Cidra Data NS14 7-Mar-05 5,136 Cidra Data NS24 26-Mar-05 5,084 SBHP NS14 29-Mar-05 5,090 SBHP NS05 11-Apr-05 5,076 Cidra Data NS14 24-Apr-05 5,107 Cidra Data NS24 29-Apr-05 5,109 Cidra Data NS08 12-May-05 5,113 SBHP NS19 17-May-05 5,101 PBU NS05 21-Jun-05 5,140 Cidra Data NS22 21-Jun-05 5,119 Cidra Data NS24 21-Jun-05 5,107 Cidra Data NS28 21-Jun-05 5,087 Cidra Data NS05 24-Jul-05 5,099 Cidra Data NS21 24-Jul-05 5,090 Cidra Data NS22 24-Jul-05 5,121 Cidra Data NS24 8-Aug-05 5,123 Cidra Data NS05 6-Sep-05 5,112 Cidra Data NS21 6-Sep-05 5,090 Cidra Data NS13 21-Oct-05 5,102 Cidra Data NS16 27-Oct-05 5,091 Cidra Data NS21 2-Nov-05 5,092 Cidra Data NS24 2-Nov-05 5,122 Cidra Data NS24 27-Nov-05 5,124 Cidra Data NS16 4-Dec-05 5,092 Cidra Data NS28 6-Dec-05 5,116 Cidra Data 6 These pressures are graphically represented in the next figure that is a plot of pressure by well versus time. These data indicate pressures dropped slightly during 2005 due to less than balanced voidage make-up. A complete listing of data from these surveys is shown in Attachment 4 on the AOGCC Reservoir Pressure Report form. 7 Northstar Well Pressure Data5,0605,0805,1005,1205,1405,1605,1805,2005,2205,2405,260Oct-01Jan-02Apr-02Jul-02Oct-02Jan-03Apr-03Jul-03Oct-03Jan-04Apr-04Jul-04Oct-04Jan-05Apr-05Jul-05Oct-05Jan-06psiaNS05NS06NS07NS08NS09NS09NS12NS13NS14NS15NS16NS17NS18NS19NS20NS21NS22NS23NS24NS25NS28 8 D) Results and Analysis of Production and Injection Log surveys, tracer surveys, observation well surveys and any other special monitoring. No injection profiles and seven production profiles were obtained in 2005. In addition to the production log in NS24, a borax log was run 03/27/05 identifying a channel. The following table summarized these as well as previous profile results. Well NameWell TypeDateTypeShublik D Ivishak Zone E Ivishak Zone D Ivishak Zone C3 Ivishak Zone C2 Ivishak Zone C1 Ivishak Zone BNS23Injector7/13/2003Memory S/T/P62913181618NS27Injector7/21/2004S/T/P512192638NS13Producer10/4/2004S/T/P/Grad/Ghost/DEFT12591910NS08Producer12/7/2004S/T/P/Gradio/Ghost553195NS09Producer12/11/2004S/T/P/Gradio5429170NS24Producer3/26/2005Memory S/T/P/Gradio43570NS14Producer3/29/2005S/T/P/Gradio/Ghost55432NS19Producer5/16/2005Memory S/T/P100NS14Producer6/26/2005Memory S/T/P/FCAP174538NS06Producer6/30/2005S/T/P/Gradio/Ghost494011NS28Producer8/20/2005Memory S/T/P/DEFT/Ghost100NS05Producer10/7/2005Memory S/T/P60400Percentage of flow to/from interval. Blank intervals are not perforated. A tracer study was initiated in 2004. Unique chemical tracers were injected into the six Northstar gas injection wells (NS17, NS23, NS25, NS27, NS29 and NS31) on April 12, 2004. Gas samples are taken from each producer once every two weeks. Results to date are shown in the following plots. 9 NS05 Tracer Response 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb v/v)Tracer Response NS25 Tracer Response NS29 Tracer Response NS23 NS06 Tracer Response 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb v/v)Tracer Response NS25 Tracer Response NS27 10 NS07 Tracer Response 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb v/v)Tracer Response NS27 Tracer Response NS29 NS08 Tracer Response 0.00 0.20 0.40 0.60 0.80 1.00 1.20 0 50 100 150 200 250 300 350 400 450 500 Days After InjectionTracer Conc. (ppb)Tracer Response- NS29Tracer Response - NS23Tracer Response - NS 27 11 NS09 Tracer Response 0.00 0.05 0.10 0.15 0.20 0.25 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb)Tracer Response- NS29 Tracer Response - NS23 Tracer Response - NS 27 Tracer Response - NS25 NS12 Tracer Response 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb)Tracer Response - NS25 12 NS13 Tracer Response 0 0 0 1 1 1 1 1 2 2 2 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc. (ppb)Tracer Response - NS29 Tracer Response - NS23 Tracer Response - NS27 NS14 Tracer Response 0 0 0 0 0 1 1 1 1 1 1 0 50 100 150 200 250 300 350 400 450 500 Days After InjectionTracer Conc. (ppb v/v)Tracer Response - NS29 Tracer Response - NS23 13 N15 Tracer Reponses 0 0 0 0 0 1 1 0 100 200 300 400 500 600 700 Days After InjectionTracer Conc.(ppb v/v)Tracer Reponse - NS29 Tracer Response - NS17 NS16 Tracer Response 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 0 100 200 300 400 500 600 700 Days After injectionTracer Conc. (ppb)Tracer Response - NS29 14 NS18 Tracer Response 0 0.05 0.1 0.15 0.2 0.25 0.3 0 100 200 300 400 500 600 700 Days After injectionTracer Conc. (ppb v/v)Tracer Response - NS17 Tracer Response - NS29 NS19 Tracer Response 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0 100 200 300 400 500 600 700 Days After injectionTracer Conc. (ppb v/v)Tracer Response - NS29 This point is believed to be in error due to proximity of the NS19 and the fact that NS19 is still producing at solution GOR. 15 NS22 Tracer Response 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0 100 200 300 400 500 600 700 Days After injectionTracer Conc. (ppb v/v)Tracer Response - NS31 NS 24 Tracer Responses 0 0 0 0 0 1 1 1 1 0 100 200 300 400 500 600 700 Days After injectionTracer Conc. (ppb v/v)Tracer Response - NS29 Tracer Response - NS23 16 NS28 Tracer Responses 0 0.1 0.2 0.3 0.4 0.5 0.6 0 100 200 300 400 500 600 Days AfterIinjectionTracer Conc.(ppb v/v)Tracer Response - NS29 17 E) Review of pool production allocation factors and issues over the prior year Theoretical production is calculated for each Northstar producing well on a daily basis. A well’s theoretical production is calculated using average wellhead flowing pressure and hours on production as follows: ltheoreticaaof n whsi whfproduced QQP Phours =·-·124 Where: hoursproduced = hours on line Pwhf = average wellhead flowing pressure Pwhsi = shut-in wellhead pressure n = flow exponent Qaof = absolute open flow of well with Pwhf = 0 psi Qtheoretical = theoretical production The input parameters (n, Qaof and Pwhsi ) for each well are determined from well test data and systems analysis and are reviewed each time new test data becomes available. The actual total production for a day is divided by the summation of the theoretical production from each well to calculate a daily allocation factor. This allocation factor is then multiplied by each well’s theoretical production to calculate allocated production. Allocation factors for 2005 had an average value of 1.0928 and a median of 1.0932. 18 F) Review of Annual Plan of Operations and Development and Future Development Plans Northstar concluded 2005 with six injection wells, seventeen producing wells and two Class I disposal wells on line. During 2005, the NS05 and NS28 producers were brought on line. This drilling activity is summarized in the following table. Northstar - Year End Wells Year Count Producers Injectors Class I Disposal 1 NS07 NS27 NS10 2 NS08 NS29 3 NS09 NS31 4 NS13 5 NS14 2002 6 NS15 1 NS07 NS27 NS10 2 NS08 NS29 3 NS09 NS31 4 NS13 NS17 5 NS14 NS23 6 NS15 7 NS24 8 NS18 9 NS22 10 NS06 11 NS12 12 NS19 2003 13 NS20 1 NS07 NS27 NS10 2 NS08 NS29 NS32 3 NS09 NS31 4 NS13 NS17 5 NS14 NS23 6 NS15 NS25 7 NS24 8 NS18 9 NS22 10 NS06 11 NS12 12 NS19 13 NS20 14 NS16 2004 15 NS21 19 Northstar - Year End Wells Year Count Producers Injectors Class I Disposal 1 NS05 NS17 NS10 2 NS06 NS23 NS32 3 NS07 NS25 4 NS08 NS27 5 NS09 NS29 6 NS12 NS31 7 NS13 8 NS14 9 NS15 10 NS16 11 NS18 12 NS19 13 NS20 14 NS21 15 NS22 16 NS24 2005 17 NS28 MMS wells in bold Future Development Plans We recognize the possibility that satellite hydrocarbon accumulations may exist within expected drilling reach from the island. These targets will be the subject of additional appraisal. Infill wells and or sidetracks to optimize recovery from the Northstar pool are also possible. As of March 2006, three additional infill development wells are planned and one well is planned for a target outside the current Northstar Producing Area. Two of the infill wells (NS14A & NS30) have been drilled to TD and are awaiting final completion. Drilling is ongoing on a third well (NS34) and a fourth well (NS11) is scheduled. 20 G) Status of Wells Shut-in for 365 days or More (20 AAC 25.115) No Northstar wells were shut-in for 365 days or more during 2005. 21 Well Status 12/31/05 Bottomhole Locations Abandoned Disposal Well Gas Injector Not Complete Oil Producer Ivishak Boundary Lease Boundary Unit Boundary Township / Range Boundary Northstar Well Status for AOGCC Annual Performance Report E. M. Fueg 3/27/06 Projection Information Alaska State Plane Zone 4 Clarke 1866, NAD 1927R13ER12E R14ER14ET14N T13N R13ER13ER12ER13ER13ER14ER13EADL312808 Y0181 ADL312799 Y0179 ADL312798 Y1645 ADL312809 NS13 NS16 NS26 NS15 NS14A NS11 NS30 NS12 NS34 NS05 NS06 NS07 NS08 NS09 NS10 NS14 NS17 NS18 NS19 NS20 NS21 NS22 NS23 NS24 NS25 NS27 NS28 NS29 NS31 NS32 bp LEGEND T R A N S - ALA S K A PIP ELIN E 32 MILES 10 Attachment 1: MAP OF NORTHSTAR WELL LOCATIONS 22 Attachment 2 NORTHSTAR FIELD 2005 OVERVIEW STATISTICAL SUMMARY WELL STATISTICS 2005 (12/31/05) Full year (1) As of 12/05 (2) Producers 17 16 Injectors 8 7 NOTES: (1) Well count data reflects ONLY those wells which contributed to production/injection during the respective year (2) Active wells as of December 2005 PRODUCTION/INJECTION STATISTICS Production 2005 Cumulative: Start- Up through 12/31/05 Oil (BBL) 22,421,483 89,636,187 Gas (MCF) 142,131,405 367,677,560 Water (BBL) 4,361,019 8,231,854 Injection W ater (BBL) into NS10 & NS32Disposal W ell 4,634,231 9,894,642 Gas (MCF) 165,712,093 466,574,682 Balance Cum Production (MRB) 113,654 316,950 Cum Injection (MRB) 112,549 315,811 Over/Under (MRB) -1,105 -1,139 DAILY AVERAGE RATE DATA 2005 Production Oil, BOPD 61,429 Gas, MCF/D 11,948 W ater, BW PD 389,401 Injection W ater, BW PD 12,697 Gas, MCFPD 454,006 AVER AGE RESERVOIR PRESSURE Average of surveys obtained in 2005, psia 5,115 23 Changes to the Voidage calculation for years 2001 – 2005 have also changed the Overview Statistical Summaries filed with past Annual Reports. Updated Corrected Statistical Summaries for 2001-2004 follow. NORTHSTAR FIELD 2004 OVERVIEW STATISTICAL SUMMARY WELL STATISTICS 2004 (12/31/04) Producers 15 Injectors 6 NOTES: (1) Well count data reflects ONLY those wells which contributed to production/injection during the respective year (2) Active wells as of December 2004 PRODUCTION/INJECTION STATISTICS Production 2004 Cumulative: Start-Up through 12/31/04 Oil (BBL) 25,078,477 67,214,704 Gas (MCF) 104,382,882 225,546,155 Water (BBL) 2,817,059 3,870,835 Injection 3,029,981 5,260,411 Water (BBL) into NS10 & NS32Disposal Well 131,501,283 300,862,589 Gas (MCF) Balance 89,970 203,296 Cum Production (MRB) 89,310 203,262 Cum Injection (MRB) -660 -34 Over/Under (MRB) DAILY AVERAGE RATE DAT A 2004 (366 days) Production Oil, BOPD 68,520 Water, BW PD 7,697 Gas, MCF/D 285,199 Injection Water, BW PD 8,279 Gas, MCFPD 359,293 AVERAGE RESERVOIR PRESSURE Average of surveys obtained in 2004, psia 5,178 24 NORTHSTAR FIELD 2003 OVERVIEW STATISTICAL SUMMARY WELL STATISTICS 2003 (12/31/03) Producers 13 Injectors 5 NOTES: (1) Well count data reflects ONLY those wells which contributed to production/injection during the respective year (2) Active wells as of December 2003 PRODUCTION/INJECTION STATISTICS Production 2003 Cumulative: Start-Up through 12/31/03 Oil (BBL) 22,968,022 42,136,227 Gas (MCF) 70,861,557 121,163,273 Water (BBL) 894,229 1,053,776 Injection W ater (BBL) into NS10 & NS32Disposal Well 1,193,004 2,230,430 Gas (MCF) 101,268,254 169,361,306 Balance Cum Production (MRB) 65,512 113,327 Cum Injection (MRB) 68,697 113,953 Over/Under (MRB) 3,185 626 DAILY AVERAGE RATE DAT A 2003 Production Oil, BOPD 62,926 W ater, BW PD 2,450 Gas, MCF/D 194,141 Injection W ater, BW PD 3,269 Gas, MCFPD 277,447 AVERAGE RESERVOIR PRESSURE Average of surveys obtained in 2003, psia 5,164 25 NORTHSTAR FIELD 2002 OVERVIEW STATISTICAL SUMMARY WELL STATISTICS 2002 (12/31/01) Producers 6 Injectors 3 NOTES: (1) Well count data reflects ONLY those wells which contributed to production/injection during the respective year (2) Active wells as of December 2002 PRODUCTION/INJECTION STATISTICS Production 2002 Cumulative: Start-Up through 12/31/02 Oil (BBL) 17,902,653 19,168,205 Gas (MCF) 47,615,650 50,301,716 Water (BBL) 152,461 159,547 Injection Water (BBL) into NS10 & NS32Disposal Well 935,119 1,037,426 Gas (MCF) 64,396,277 68,093,052 Balance Cum Production (MRB) 45,311 47,814 Cum Injection (MRB) 43,087 45,255 Over/Under (MRB) -2,224 -2,559 DAILY AVERAGE RATE DAT A 2002 Production Oil, BOPD 49,048 Water, BW PD 418 Gas, MCF/D 130,454 Injection Water, BW PD 2,562 Gas, MCFPD 176,428 AVER AGE RESERVOIR PRESSURE Average of surveys obtained in 2002, psia 5,115 26 NORTHSTAR FIELD 2001 OVERVIEW STATISTICAL SUMMARY WELL STATISTICS 2002 (12/31/01) Producers 2 Injectors 2 NOTES: (1) Well count data reflects ONLY those wells which contributed to production/injection during the respective year (2) Active wells as of December 2001 PRODUCTION/INJECTION STATISTICS Production 2001 Cumulative: Start-Up through 12/31/01 Oil (BBL) 1,265,552 89,636,187 Gas (MCF) 2,686,066 367,677,560 Water (BBL) 7,086 8,231,854 Injection Water (BBL) into NS10 & NS32Disposal Well 102,307 102,307 Gas (MCF) 3,696,775 3,696,775 Balance Cum Production (MRB) 2,503 2,503 Cum Injection (MRB) 2,168 2,168 Over/Under (MRB) -335 -335 DAILY AVERAGE RATE DAT A 2001 Production Oil, BOPD 3,458 W ater, BW PD 19 Gas, MCF/D 7,339 Injection W ater, BW PD 0 Gas, MCFPD 10,100 Updated 3/15/05 – clp 27 Attachment 3 Voidage Balance by Month of Produced Fluid and Injected Fluids Produced water (MRB) was removed from the Total Voidage (MRB) calculation for years 2001 through 2005. Corrected Voidage Balance by Month of Produced and Injection Fluids charts for 2001 to 2004 are shown below. 2004 MonthOil, MRBFree Gas, MRBWater, MRBTotal Voidage, MRBYearCum, MRBCum since start-up, MRBFormation Gas, MRBImport Gas, MRBTotal Injection, MRBYearCum, MRBCum since start-up, MRBNet Injection, MRBYearCum, MRBCum since start-up, MRBJan-20045,4691,3151846,7836,783120,1104,9322,0396,9716,971120,923187187813Feb-20042,556651913,2069,990123,3162,3391,5063,84510,816124,7686398261,452Mar-20045,0491,7041836,75216,742130,0695,0401,9627,00217,818131,7702501,0761,702Apr-20044,2631,7051725,96922,711136,0374,5221,2845,80623,624137,576-1639131,539May-20045,2373,2942018,53131,242144,5686,7551,4308,18531,809145,761-3465671,193Jun-20044,9063,1752528,08139,323152,6496,4148787,29239,101153,053-789-222404Jul-20044,8533,8022788,65647,978161,3057,0059017,90647,007160,960-749-971-345Aug-20043,4492,0332115,48353,461166,7874,2871,3025,58952,596166,548106-865-239Sep-20045,1333,6273248,76062,221175,5477,0171,8448,86261,458175,410102-763-137Oct-20045,1713,5483748,71970,940184,2676,9621,7568,71970,176184,129-1-764-138Nov-20044,9624,1683309,13080,071193,3977,4501,9169,36679,542193,494235-52997Dec-20045,1684,7313689,89989,970203,2968,1471,6219,76889,310203,262-131-660-342004 Totals56,21733,7532,96689,97070,87018,44089,310-660Produced FluidsInjected FluidsNet Injection (Injection - Production) Note: MRB stands for thousand reservoir barrels. 28 2003 MonthOil, MRBFree Gas, MRBWater, MRBTotal Voidage, MRBYearCum, MRBCum since start-up, MRBFormation Gas, MRBImport Gas, MRBTotal Injection, MRBYearCum, MRBCum since start-up, MRBNet Injection, MRBYearCum, MRBCum since start-up, MRBJan-20033,3861,394274,7804,78052,5943,6311,5655,1955,19550,451416416-2,143Feb-20034,4531,237595,69010,47058,2844,1911,2155,40610,60155,856-285131-2,428Mar-20034,3731,837896,21016,67964,4944,7191,6816,40017,00162,256190321-2,238Apr-20033,0301,156524,18620,86668,6803,1341,7494,88421,88467,1406971,019-1,540May-20034,6221,422766,04526,91174,7254,4691,0395,50827,39272,647-537481-2,078Jun-20034,7871,656716,44333,35481,1684,8281,6656,49433,88679,14151532-2,027Jul-20034,2641,570645,83439,18887,0024,3711,6656,03639,92285,177202734-1,825Aug-20034,2581,125705,38344,57192,3853,9361,8135,74845,67190,9263661,100-1,459Sep-20034,6150954,61549,18697,0002,9842,0165,00050,67195,9263851,485-1,074Oct-20035,1989361186,13355,320103,1344,3842,1646,54757,218102,4734141,899-660Nov-20034,2669011195,16760,486108,3013,7281,9385,66662,884108,1394992,398-161Dec-20034,0929341025,02665,512113,3273,6452,1685,81368,697113,9537873,1856262003 Totals51,34514,16894265,51248,02020,67768,6973,185Net Injection (Injection - Production)Injected FluidsProduced Fluids Note: MRB stands for thousand reservoir barrels. 29 2002 MonthOil, MRBFree Gas, MRBWater, MRBTotal Voidage, MRBYearCum, MRBCum since start-up, MRBFormation Gas, MRBImport Gas, MRBTotal Injection, MRBYearCum, MRBCum since start-up, MRBNet Injection, MRBYearCum, MRBCum since start-up, MRBJan-20022,405042,4052,4054,9091,5156792,1942,1944,362-211-211-546Feb-20022,198022,1984,6037,1071,1095861,6953,8896,057-504-715-1,050Mar-20023,378023,3787,98210,4851,9771,4223,3997,2889,45620-694-1,029Apr-20022,376002,37610,35712,8611,5551,2912,84610,13412,302471-224-559May-20022,3558912,44412,80215,3051,5426282,17012,30414,473-274-498-833Jun-20023,97232744,30017,10119,6052,9737053,67815,98218,151-622-1,119-1,454Jul-20023,853714104,56721,66824,1723,3171,1674,48420,46722,635-83-1,202-1,537Aug-20024,0131,043185,05626,72429,2283,7471,0714,81825,28427,453-238-1,440-1,775Sep-20022,949476153,42530,14932,6532,4449763,42028,70430,873-5-1,445-1,780Oct-20024,0401,042365,08235,23137,7343,7919194,71033,41535,583-372-1,817-2,152Nov-20023,6491,192304,84140,07242,5753,6728684,54037,95540,123-301-2,117-2,452Dec-20023,7291,510375,23945,31147,8144,0351,0975,13243,08745,255-107-2,224-2,5592002 Totals38,9196,39216145,31131,67611,41143,087-2,224Produced FluidsInjected FluidsNet Injection (Injection - Production) Note: MRB stands for thousand reservoir barrels. 30 2001 MonthOil, MRBFree Gas, MRBWater, MRBTotal Voidage, MRBYearCum, MRBCum since start-up, MRBFormation Gas, MRBImport Gas, MRBTotal Injection, MRBYearCum, MRBCum since start-up, MRBNet Injection, MRBYearCum, MRBCum since start-up, MRBJan-200100000000000000Feb-200100000000000000Mar-200100000000000000Apr-200100000000000000May-200100000000000000Jun-200100000000000000Jul-200100000000000000Aug-200100000000000000Sep-200100000000000000Oct-20011001111-45-44-44-44-45-45-45Nov-200169801698699699390200589545545-109-154-154Dec-20011,804061,8042,5032,5031,1504741,6232,1682,168-181-335-3352001 Totals2,503072,5031,5406292,168-335.0Produced FluidsInjected FluidsNet Injection (Injection - Production) Note: MRB stands for thousand reservoir barrels.