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Home My WebLink About2003 Badami ANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL JANUARY 2003 - DECEMBER 2003 Table of Contents 1. Introduction 1 2. Summary Of Reservoir Management And Enhanced Recovery 1 3. Voidage Balance 2 4. Reservoir Pressure Monitoring 2 5. Production Logging 2 6. Special Monitoring 2 7. Evaluation Of Well Testing And Allocation 2 8. Future Development Plans 3 9. Review Of Annual Plan Of Operations And Development 3 Appendices Table 1 Badami Well Disposition Table 2 Badami Production/Injection - Surface Units Table 3 Badami Production/Injection - Reservoir Units Table 4 Badami Pressure Monitoring Summaries Table 5 Badami Well Testing Frequency Summaries Figure 1 Field Production History Figure 2 Field Gas Disposition Histories Figure 3 B1-11A Well Test Histories Figure 4 B1-15 Well Test Histories Figure 5 B1-18 Well Test Histories Figure 6 B1-25 Well Test Histories Figure 7 B1-28 Well Test Histories Figure 8 B1-36 Well Test Histories Figure 9 B1-14 Gas Injection History Figure 10 B1-21 Gas Injection History ANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL January 2003 – December 2003 1. Introduction As required by Rule 9 of the Badami Oil Pool Area Injection Order, dated August 26, 1998, this report provides a summary of the enhanced oil recovery operations at Badami. It will address the following: · Progress of the enhanced recovery project and reservoir management summary including engineering and geological parameters. · Voidage balance by month of produced fluids and injected fluids. · Analysis of reservoir pressure surveys within the pool. · Results and where appropriate, analysis of production and injection logs, tracer surveys and observation well surveys. · Special monitoring. · Evaluation of well testing and allocation. · Future development plans. · Review of Annual Plan of Operations and Development. 2. Summary of Reservoir Management and Enhanced Recovery The total volume of oil produced from the Badami reservoir during the report period was 281,552 stb. 3,697,960 mmscf of gas was produced of which 3,363,093 mmscf was injected. 5,232 bbls of formation water was produced. 10 wells including the disposal well have been drilled and completed to date. Well disposition is detailed in Table 1. Until August 2003, Badami was on production with five producers making less than 1,500 bopd. Gas injection is through the two injectors, B1-14 and B1-21. However, one injector only may have been active at a given time. In August 2003 production from Badami was suspended after receiving approval from the Department of Natural Resources. No remedial well work was performed on the Badami wells during the report period. The production and gas disposition history of the field during the report period is shown in Figure 1 and 2. Figures 3 through 8 present the well test history of the producers. All of the producers showed a decrease in productivity during the report period. Figures 9 and 10 show the performance history of the gas injectors. Connectivity between producer/injection pairs B1-15/B1-14 and B1-18/B1-21 has been confirmed through production data, GOR trends and higher reservoir pressures. Production decline in these wells is somewhat lower, but this is offset by a more rapid GOR increases. 3. Voidage Balance Production and injection volumes, and reservoir voidage by month are detailed in Tables 2 and 3. Cumulative voidage through December 31, 2003 is negative 563,956 reservoir barrels. 4. Reservoir Pressure Monitoring No bottom hole reservoir pressure surveys were taken at Badami during the report period. Additional reservoir pressure information is gathered while wells area shut-in by measuring closed in wellhead pressures and extrapolating to bottom hole conditions. This method provides a relative measure of areal pressure differences but unfortunately their absolute accuracy are very poor due to the inherent errors in the methodology. As such, only static pressure surveys are included in this report. 5. Production Logging No production logging was performed during the report period on wells completed in the Badami reservoir. 6. Special Monitoring No special monitoring activities were performed during the report period. 7. Evaluation of Well Testing and Allocation The number of well tests for each of the Badami wells is presented in Table 5. The rapid rate decline seen in all of the wells and the limited well stock results in a production well testing frequency that is much higher than typical reservoirs. The methodology for daily oil production allocation to each well has not changed, and was accomplished by pro-rating the oil rates such that the total oil produced from all of the wells equaled that recorded by the fiscal pipeline meter while honoring the well tests. 8. Future Development Plans Currently there are no plans for development drilling or further reservoir development of the Badami Brookian reservoir. No major changes to the current infrastructure are planned, and the field is currently in a warm shutdown mode. Monitoring of well integrity and surveillance activity on the class 1 disposal well will continue. The possibility of successful exploration in the area around the Badami unit may bring forward new options for Badami reservoir. 9. Review of Annual Plan of Operations and Development The field was granted a suspension of production (SOP) by the Department of Natural Resources in 2003. The SOP period allows for the evaluation of options for future utilization of the existing infrastructure. Appendices Table 1 Badami Well Disposition Well Completion Date Disposition Comment B1-11A 3/4/98 Pre-produced injector cased and prop fracced. Producer 8/24/98 to present. Currently shut in. B1-14 5/1/98 Gas injector, cased. Injector 8/24/98 to 9/29/98. Producer 9/30/98 to 11/29/98. Injector 9/30/98 to present Currently shut in. B1-15 7/31/98 Producer, trilateral open hole. Dedicated producer. Supported by injection from B1-14. Currently shut in. B1-16 6/13/98 Pre-produced injector, cased Injector 8/24/98 to 9/25/98. Producer 9/26/98 to 10/21/98. Currently shut in. B1-18 4/3/98 Producer, cased and prop fracced. Dedicated producer. Currently shut in. B1-21 1/6/98 Pre-produced gas injector, fracced, no proppant Producer 8/24/98 to 11/30/98, then converted to gas injector. Currently shut in. B1-25 11/20/98 Producer, unilateral open hole. Unilateral open hole dedicated producer.. Currently shut in. B1-28 10/20/98 Producer, trilateral open hole. Trilateral open hole dedicated producer. Currently shut in. B1-36 5/23/99 Producer. Dedicated producer Currently shut in. As of December 31, 2003 Table 2 Badami Production/Injection - Surface Units BADAMI PRODUCTION / INJECTION - SURFACE UNITS 2003 PRODUCTION Jan Feb Mar April May June July Aug Sept Oct Nov Dec 2003 Total Oil (stb)38,936 39,183 42,163 42,212 40,641 38,766 35,523 4,128 281,552 Associated Gas (mscf)22,816 22,961 24,708 24,736 23,816 22,717 20,816 2,419 164,989 Free Gas (mscf)352,243 115,588 579,670 596,782 603,660 610,038 585,676 89,314 3,532,971 Water (stb)563 99 137 198 241 618 619 57 2,532 2003 INJECTION Water (stb)0 0 0 0 0 0 0 0 0 0 0 0 0 Gas (mscf)333,590 104,462 554,361 572,773 576,178 584,758 556,108 80,863 0 0 0 0 3,363,093 Note (1)Per a discussion between Jack Hartz and Anna Dube on 3/22/00, a solution GOR of 586 was determined using production data from 8/98 to 2/99 and is used in calculating volumes of associated gas. This was done to address the fact there are different types of oil in the reservoir with different GOR. (2)Volumes of produced water are reported here although they are not reported in other production allocation and injection reporting due to not being of significant volume. Volumes are reported for the month the water is removed from the test separator and sent to the disposal well. Table 3 Badami Production/Injection - Reservoir Units BADAMI PRODUCTION / INJECTION - RESERVOIR UNITS Jan Feb Mar April May June July Aug Sept Oct Nov Dec 2003 Total (rb)50,617 50,938 54,812 54,876 52,833 50,396 46,180 5,366 0 0 0 0 366,018 (rb)218,831 80,838 352,629 362,630 366,106 369,186 353,863 53,522 0 0 0 0 2,157,604 (rb)569 100 138 200 243 624 625 58 0 0 0 0 2,557 (rb)270,017 131,875 407,579 417,705 419,183 420,206 400,668 58,946 0 0 0 0 2,526,179 (rb)0 0 0 0 0 0 0 0 0 0 0 0 0 (rb)194,636 60,949 323,446 334,189 336,176 341,182 324,466 47,180 0 0 0 0 1,962,224 (rb)194,636 60,949 323,446 334,189 336,176 341,182 324,466 47,180 0 0 0 0 1,962,224 (rb)-75,381 -70,926 -84,133 -83,516 -83,007 -79,024 -76,202 -11,766 0 0 0 0 -563,956 Oil Formation Volume Factor, Bo (1)1.300 rb/stb Gas Formation Volume Factor, Bg (2)0.00058 rb/scf 0.00328 vol/vol (1)Bo from Average of Badami#1 and Badami#5 (lower sand) PVT analysis. (2)Bg calculation based on gas composition of sample taken 9/18/98 185° f Reservoir temperature 6400 psi Reservoir pressure Table 5 Badami Well Testing Frequency Summary Well Number of Well Tests in 2003 B1-11A 11 B1-15 3 B1-18 1 B1-25 8 B1-28 9 B1-36 7 Figure 1 Field Production History Badami Field Oil Production 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 1-98 1-99 1-00 1-01 1-02 1-03 1-04Daily Oil Volume (bbls) Figure 2 Field Gas Disposition Histories Badami Field Gas Disposition 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 1-98 1-99 1-00 1-01 1-02 1-03 1-04Daily Gas Volume (mmscf)Fuel Flare Injection Endicott Figure 3 B1-11A Well Test Histories Figure 4 B1-15 Well Test Histories Figure 5 B1-18 Well Test Histories Figure 6 B1-25 Well Test Histories Figure 7 B1-28 Well Test Histories Figure 8 B1-36 Well Test Histories Figure 9 B1-14 Gas Injection History Figure 10 B1-21 Gas Injection History