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Home My WebLink About2011 Badami ANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL JANUARY 2011 – DECEMBER 2011 TABLE OF CONTENTS A. Progress of Enhanced Recover Project and Reservoir Maintenance Summary 3 B. Voidage Balance by Month of Produced Fluids and Injected Fluids 3 C. Analysis of Reservoir Pressure Surveys Within the Pool 3 D. Results of Analysis of Production and Injection Logs 3 E. Special Monitoring 4 F. Evaluation of Well Testing and Allocation 4 G. Future Development Plans 4 H. Review of Annual Plan of Operations and Development 4 I. Status of Wells Shut-‐In for 365 Days or More 5 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 Special Monitoring Summaries Table 6 Badami Well Testing Frequency Summaries Figure 1 Field Production History Figure 2 Field Gas Disposition History ANNUAL RESERVOIR SURVEILLANCE REPORT BADAMI OIL POOL January 2011-‐December 2011 A. Progress of the Enhanced Recover Project and Reservoir Management Summary Production was from 5 wells with gas injection into one well. Static pressure surveys were obtained from wells B1-‐16, B1-‐18 and B1-‐38. Table 4 contains a summary of the static reservoir pressures acquired in 2011. The total volume of oil produced from the Badami reservoir during the report period was 439,582 stbo. A total of 814,666 mscf of gas was produced of which 322,917 was injected back into the producing formation. No new wells were drilled and completed during the reporting period. A hydraulic fracture treatment was attempted on well B1-‐38, presently produced from the Killian Sands on a tract operation basis, but failed as a result of perforation plugging. Well disposition is detailed in Table 1. The oil production and gas disposition history of the field is shown in Figures 1 and 2. B. Voidage Balance Production and injection volumes and reservoir voidage by month are detailed in tables 2 and 3. Cumulative voidage for 2011 was negative 707,968 reservoir barrels. C. Reservoir Pressure Monitoring Three static pressure surveys were taken at Badami during the report period and are listed in Table 4. These surveys show that the pressures in the individual lobes of the reservoir continue to deplete over time consistent with the depletion drive recovery method employed in the field. D. Production Logging A production log was obtained in well B1-‐38, presently produced from the Killian Sands under a tract operation, prior to attempting to frac the well. The log confirmed gas lift was occurring at the lowermost gas lift mandrel, the flowing bottom hole pressure adjacent to the perforations was 2170 psi. A temperature log was run in well B1-‐28 to determine where the tubing was communicating with the inner annulus. The lowermost gas lift mandrel was found to be washed out based on the condition of the gas lift valve recovered from the mandrel. E. Special Monitoring A pressure build up survey was conducted on well B1-‐38 during the reporting period. Results of the surveys are detailed in Table 5. F. Evaluation of Well Testing and Allocation Table 6 is a summary of well testing frequency for each of the Badami wells. Daily oil production allocation to each well is accomplished by pro-‐rating the oil rates from the most recent well test such that the total oil produced from all wells equals the amount measured by the custody transfer pipeline meter. G. Future Development Plans A second exploration well, Red Wolf #2, will be drilled from a remote ice pad into the Red Wolf prospect within the Badami Unit in April 2012. Drilling rig work overs will be conducted in March 2012 on wells B1-‐21 and B1-‐16 to install artificial lift systems to enable the wells to be produced into the Badami plant. An electric submersible pump will be installed in well B1-‐16 and gas lift system will be installed on B1-‐21. A dummy gas lift valve with swell packer material will be installed in the lowermost gas lift mandrel in well B1-‐28 to restore the mechanical integrity between the inner annulus and tubing. If this repair proves successful, an attempt to place this well back on production will occur in April 2012. Monitoring of well integrity and surveillance activity on the Class I disposal well, B1-‐ 01, will continue pursuant to statutory requirement. Reservoir pressure will be acquired during 2011 to monitor Badami reservoir depletion. H. Review of Plan of Development of Operations and Development The 9th Plan of Development for the Badami Unit (POD) was approved by the Department of Natural Resources on December 14, 2011. The POD expires on July 15, 2013. I. Status of Well Shut-‐in for 365 Days or More (20 AAC 25.115) The following wells were shut-‐in for all of 2011. Badami Shut-‐in Wells 2011 Sw Name Date Shut-‐in Reason for Well Shut-‐in (1) Current Mechanical Condition of Well (2) Future Utility Plans & Possibilities (3) Comments B1-‐16 May 2007 C. Low Production Rate, no known mechanical problems Secured with BPV B. Remedial well work planned B1-‐25 July 2003 D. Mechanical Problem Collapsed tubing and casing at 4504’ MD. Halliburton 9-‐5/8” Fasdrill @2450’ MD w/ 50’ Arctic Set Cement and 9-‐5/8” Halliburton EZSV @ 2347’ MD w/ 50’ of Arctic Set Cement above plug. C. Long term shut-‐in well/No immediate plans B1-‐28 July 2003 D. Mechanical Problem TxIA communication. Secured with tubing tail plug and BPV. B. Remedial well work planned (1) Reasons for Well Shut-‐in A. High GOR, currently uncompetitive to produce due to facility constraints, no known mechanical problems B. High water, currently uneconomic to produce, no know mechanical problems C. Low production rate, no known mechanical problems D. Mechanical Problem E. Other (Specify under comments) (2) Current Mechanical Condition Briefly describe the current mechanical condition including the condition of installed tubing and casing strings. (3) Future Utility A. Evaluating remedial, sidetrack and/or re-‐drill opportunities B. Remedial well work planned C. Long term Shut-‐in well/No immediate plans D. Suspended well E. P&A planned F. Other (Specify under comments) Appendices Table 1 Badami Well Disposition – As of December 31, 2011. Well Completion Date Disposition Comment B1-‐01 8/19/98 Class 1 Disposal Well Completed MIT in Sept. 2010 B1-‐11A 3/04/98 Pre-‐produced injector cased and prop frac’d. Producer 8/24/98 to present. B1-‐14 5/01/98 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 Tri-‐lateral dedicated producer from 8/24/98 to present. B1-‐16 6/13/98 Pre-‐produced injector, cased, prop frac’d. Injector 8/24/98 to 9/25/98. Producer 9/26/98 to 10/21/98. Will not sustain flow, well contains fill, tbg restricted with paraffin, and unable to pump into well. Secured with BPV. B1-‐18A 3/12/10 Sidetracked unilateral producer, cased with slotted liner. Dedicated producer 3/12/10 to present. B1-‐21 1/06/98 Pre-‐produced gas injector, frac’d, 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. Attempt to install artificial lift left fish in tubing. Secured with TTP and BPV. B1-‐25 11/20/98 Producer, unilateral open hole. Dedicated producer. Tubing collapse confirmed 9/07/04. Well suspended 4/08/05. Two CIBP set in surface casing. B1-‐28 10/20/98 Producer, trilateral, open hole. Dedicated producer. Secured for txIA communication 4/18/05. Secured with TTP and BPV. B1-‐36 5/23/99 Producer, unilateral cased and perforated. Dedicated producer 5/30/99 to present. B1-‐38 2/09/10 Producer, unilateral cased and perforated, frac’d no proppant. Dedicated producer 11/05/10 to present. Table 2 Badami Production/Injection – Surface Units BADAMI PRODUCTION / INJECTION - SURFACE UNITS 2011 PRODUCTION Jan Feb Mar April May June July Aug Sept Oct Nov Dec 2010 Total Oil (stb)40,615 35,272 43,287 39,463 43,802 36,227 39,673 35,430 29,214 28,638 33,634 34,327 439,582 Associated Gas (mscf)23,800 20,669 25,366 23,125 25,668 21,229 23,248 20,762 17,119 16,782 19,710 20,116 257,595 Free Gas (mscf)192,487 123,298 45,342 15,569 13,645 19,649 17,782 23,557 27,411 24,885 23,087 30,360 557,071 Water (stb)0 0 0 0 0 0 0 0 0 0 0 0 0 2011 INJECTION Water (stb)0 0 0 0 0 0 0 0 0 0 0 0 0 Gas (mscf)170,073 98,980 15,609 2,758 3,788 3,199 367 3,826 11,895 4,216 1,976 6,230 322,917 Notes: (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 allocations and injection reporting due to not being of significant volume. Volumes here are based on tank levels when the water was pumped into the disposal well and are not the actual water production for any given month. Table 3 Badami Production/Injection – Reservoir Units BADAMI PRODUCTION / INJECTION - RESERVOIR UNITS 2011 PRODUCTION Jan Feb Mar April May June July Aug Sept Oct Nov Dec 2010 Total Oil (rb)52,800 45,854 56,273 51,302 56,943 47,095 51,575 46,059 37,978 37,229 43,724 44,625 571,457 Free Gas (rb)112,220 71,883 26,434 9,077 7,955 11,455 10,367 13,734 15,980 14,508 13,460 17,700 324,772 Water (rb)0 0 0 0 0 0 0 0 0 0 0 0 0 All Fluids (rb)165,019 117,736 82,707 60,378 64,898 58,550 61,942 59,793 53,959 51,737 57,184 62,325 896,229 2011 INJECTION Water (rb)0 0 0 0 0 0 0 0 0 0 0 0 0 Gas (rb)99,153 57,705 9,100 1,608 2,208 1,865 214 2,231 6,935 2,458 1,152 3,632 188,261 All Fluids (rb)99,153 57,705 9,100 1,608 2,208 1,865 214 2,231 6,935 2,458 1,152 3,632 188,261 Voidage (rb)-65,867 -60,031 -73,607 -58,771 -62,689 -56,685 -61,728 -57,562 -47,024 -49,280 -56,032 -58,693 -707,968 Oil Formation Volume Factor, Bo 1.300 rb/stb Gas Formation Volume Factor, Bg 0.000583 rb/scf 0.003276 vol/vol Water Formation Volume Factor, Bw 1.0101 rb/stb Notes: (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 (reservoir temperature 185 degrees F, reservoir pressure: 6400 psi) Table 4 2011 Badami Pressure Monitoring Well Test Date Operation Pressure At Datum (psia) Datum (TVDSS Feet) B1-16 10/11/11 Pressure Static 4,538 10,500 B1-18A 4/25/11 Pressure Static 4,190 10,500 B1-38 2/22/11 Pressure Static 4,120 11,000 Table 5 Badami Special Monitoring Summaries Pressure Build Up Test and Analysis – Well B1-‐38 Metric Horner Build-‐Up Analysis Permeability*Thickness (mDs*ft) 249.0 Reservoir Matrix Permeability (mDs) 5.1 Depth of Damage Zone (feet) 23 Damage Zone Permeability (mDs) 3.5 Skin 1.4 P* (psia) 6409 Duration of Analyzable Data (hours) 39.3 Table 6 Badami Well Testing Frequency Summary Number of well tests in each calendar year. Well 2003 2004 2005 2006 2007 2008 2009 2010 2011 B1-‐11A 11 0 20 84 33 0 0 0 89 B1-‐15 3 0 15 43 0 0 0 4 35 B1-‐16 0 0 0 1 1 0 0 0 1 B1-‐18 1 0 18 64 19 0 0 0 0 B1-‐18A N/A N/A N/A N/A N/A N/A N/A 12 118 B1-‐21 0 0 22 35 18 0 0 1 4 B1-‐25 8 0 0 0 0 0 0 0 0 B1-‐28 9 0 0 0 0 0 0 0 0 B1-‐36 7 0 25 90 36 0 0 20 145 B1-‐38 N/A N/A N/A N/A N/A N/A N/A 22 102 Figure 1 Badami Field Production History 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 8/24/98 8/24/99 8/23/00 8/23/01 8/23/02 8/23/03 8/22/04 8/22/05 8/22/06 8/22/07 8/21/08 8/21/09 8/21/10 8/21/11 8/20/12 Daily Oil Volume (bopd) Badami Field Oil Production Figure 1 Badami Gas Disposition History 0 5,000 10,000 15,000 20,000 25,000 30,000 8/24/98 8/24/99 8/23/00 8/23/01 8/23/02 8/23/03 8/22/04 8/22/05 8/22/06 8/22/07 8/21/08 8/21/09 8/21/10 8/21/11 8/20/12 Daily Gas Volumes (mscfpd) Badami Field Gas Disposition Injection Fuel Flare Endicott (Imported)