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Home My WebLink About2006 BadamiANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL JANUARY 2006 - DECEMBER 2006 Table of Contents 1. Introduction 3 2. Summary of Reservoir Management and Enhanced Recovery 3 3. Voidage Balance 4 4. Reservoir Pressure Monitoring 4 5. Production Logging 4 6. Special Monitoring 4 7. Evaluation of Well Testing and Allocation 5 8. Future Development Plans 5 9. Review of Annual Plan of Operations and Development 5 10. Status of wells shut-in for 365 Days or More 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 Well Test History of B1-11A Figure 4 Well Test History of B1-15 Figure 5 Well Test History of B1-16 Figure 6 Well Test History of B1-18 Figure 7 Well Test History of B1-21 Figure 8 Well Test History of B1-36 Figure 9 Gas Injector Performance History ANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL January 2006 – December 2006 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 Production at Badami was restarted September 15, 2005 after a field wide shut-in since August 2003. Production since restart is from five wells. Gas injection is occurring into one well since restart. Since the last annual surveillance report, one well has been secured because of collapsed casing and tubing (Well B1-25). Two other wells are shut-in due to either fill through the perforated interval and above (Well B1-16) or until the cause of communication between the tubing and the annulus can be determined (Well B1-28). B1- 28 has a tubing tail plug installed to isolate the producing formations from the tubing. The total volume of oil produced from the Badami reservoir during the report period was 480,488 stbo. A total of 4,202,168 mmscf of gas was produced of which 3,732,274 mmscf was injected back into the producing formation. Two thousand three hundred and forty-one (2,341) stock tank barrels of formation water was reported produced. No new wells were drilled or completed.. Well disposition is detailed in Table 1. A Brush and Flush maintenance program has been instituted to mitigate a persistent paraffin buildup problem to help sustain production. The production and gas disposition history of the field during the report period is shown in Figures 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. Figure 9 shows the performance history of the gas injector. Connectivity between producer/injection pair B1-15/B1-14 has been re-confirmed through production data, GOR trends, and higher reservoir pressures since re-start. Production decline in B1-15 is somewhat lower than historic production data before shut down, but this is offset by 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 for year 2006 was negative736,794 reservoir barrels. 4. Reservoir Pressure Monitoring Only one static pressure was taken at Badami during the report period in well B1-18. This static shows that the pressure in this lobe of the reservoir has dropped significantly since start up. Fifteen statics were taken in 2005 in preparation for the field start up. 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 Table 5 is a summary of well testing frequency for each of the Badami wells. Daily oil production allocation to each well is accomplished by a method of pro-rating the oil rates such that the total oil produced from all wells equals the fiscal pipeline meter. 8. Future Development Plans Currently there are no plans for development drilling of the Brookian reservoir in 2007. No major changes to the current infrastructure are planned. The field is being evaluated for possible warm shutdown. Monitoring of well integrity and surveillance activity on the Class 1 disposal well, B1-01, will continue as required. 9. Review of Annual Plan of Operations and Development The field was granted a 6th POD by the Department of Natural Resources in June of 2005, which expires June, 2008. 10. Status of Wells Shut-in for 365 Days or More (20 AAC 25.115) The following wells were shut-in all of 2006. B1-25 is secured/safedout following a March 2005 RWO that failed to resolve collapsed tubing and casing. B1-28 is shut-in and secured with a tubing tail plug due to tubing by inner annulus communication. Appendices Table 1 Badami Well Disposition Well Completion Date Disposition Comment B1-01 8/19/98 Class 1 Disposal Well Completed MIT in 2006 B1-11A 3/4/98 Pre-produced injector cased and prop fracced. Producer 8/24/98 to present. 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. B1-15 7/31/98 Producer, trilateral open hole. Trilateral open hole dedicated producer. Dedicated producer. Supported by injection from B1-14. B1-16 6/13/98 Pre-produced injector, cased, prop fracced. Injector 8/24/98 to 9/25/98. Producer 9/26/98 to 10/21/98. Currently shut-in; will not sustain flow. B1-18 4/3/98 Producer, cased and prop fracced. Dedicated producer. B1-21 1/6/98 Pre-produced gas injector, fracced, no proppant. Converted back to producer. Producer 8/24/98 to 11/30/98. Injector 12/01/98 to Aug 2003. Producer Oct 2005 to present. B1-25 11/20/98 Producer, unilateral open hole. Unilateral open hole dedicated producer. Suspended/secured/safed out due to collapsed tubing and casing. B1-28 10/20/98 Producer, trilateral open hole. Trilateral open hole dedicated producer. Currently shut-in and secured with a tubing tail plug due to tubing by inner annulus communication. B1-36 5/23/99 Producer. Dedicated producer As of December 31, 2006 Table 2 Badami Production/Injection - Surface Units Table 3 Badami Production/Injection - Reservoir Units Table 4 2006 Badami Pressure Monitoring Summary W e ll Da te Ope ra ti on Com m e nt B1-18 7/1/06 Press ure Static Pres sure at datum: 1958 ps i 2005 Badami Pressure Monitoring Summary Table 5 Badami Well Testing Frequency Summary Well Number of Well Tests in 2003 Number of Well Tests in 2004 Number of Well Tests in 2005 Number of Well Tests in 2006 B1-11A 11 0 20 84 B1-15 3 0 15 43 B1-16 0 0 0 1 B1-18 1 0 18 64 B1-21 0 0 22 35 B1-25 8 0 0 0 B1-28 9 0 0 0 B1-36 7 0 25 90 Figure 1 Field Production History Badami Field Oil Production02,0004,0006,0008,00010,00012,00014,00016,00018,0008/24/988/24/998/23/008/23/018/23/028/23/038/22/048/22/058/22/06Daily Oil Volume (bopd) Figure 2 Field Gas Disposition Histories Badami Field Gas Disposition05,00010,00015,00020,00025,00030,00035,0008/24/988/24/998/23/008/23/018/23/028/23/038/22/048/22/058/22/06Daily Gas Volumes (mscfpd)InjectionFuelFlareEndicott (Imported) Figure 3 Well Test History B1-11A Figure 4 Well Test History B1-15 Figure 5 Well Test History B1-16 Figure 6 Well Test History B1-18 Figure 7 Well Test History B1-21 Figure 8 Well Test History B1-36 Figure 9 Gas Injector Performance History