Significant New “Learings” Significant New “Learings” From An Integrated Study Of From An Integrated Study Of An Old Field, Foster/South An Old Field, Foster/South Cowden Field (Grayburg & Cowden Field (Grayburg & San Andres), Ector County, San Andres), Ector County, Texas Texas DE-FC22-93BC14982 DE-FC22-93BC14982 Robert C. Trentham, DGS Center for Energy and Economic Diversification University of Texas of the Permian Basin
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Robert C. Trentham, DGS Center for Energy and Economic Diversification
Significant New “Learings” From An Integrated Study Of An Old Field, Foster/South Cowden Field (Grayburg & San Andres), Ector County, Texas DE-FC22-93BC14982. Robert C. Trentham, DGS Center for Energy and Economic Diversification University of Texas of the Permian Basin. Project Results. - PowerPoint PPT Presentation
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Significant New “Learings” From Significant New “Learings” From An Integrated Study Of An Old An Integrated Study Of An Old
Field, Foster/South Cowden Field Field, Foster/South Cowden Field (Grayburg & San Andres), Ector (Grayburg & San Andres), Ector
County, TexasCounty, TexasDE-FC22-93BC14982DE-FC22-93BC14982
Robert C. Trentham, DGSCenter for Energy and
Economic DiversificationUniversity of Texas of the
Permian Basin
Project ResultsProject Results
• 290,000 BO Incremental Production 1996 to present
• >650,000 BO Incremental Reserves• 3 Re-entries• 4 New Drills• >12 Workovers• Economic life of field extended from 9 to 16
years• Sold to Oxy for well above decline curve price.
Sec 36 Production 1977 to Sec 36 Production 1977 to 19931993
Bottom Line
““Learnings” Came in All Learnings” Came in All AreasAreas
• Reservoir Characterization• Well Testing• Recompletions • Production
Type LogType Log• Queen
• Upper Grayburg –Main Pay
• Lower Grayburg – Minor Pay
• San Andres – Large OOIP
FOSTER FIELD
INTEGATED STUDYINTEGATED STUDY
• GEOLOGICAL MODEL
• 3D SEISMIC / INVERSION MODELING
• FLOW MODELING• HISTORY MATCH• SIMULATION• TESTING, WELL
WORK, MONITORING
• OLD WATERFLOOD• CROSS FLOW
BETWEEN ZONES• NO FRACTURE
STIMULATIONS• BHP DISCREPANCIES• LOW PERMEABILLLTY• WHERE DID THE
ProductionProduction• Outcome of fracture stimulation is
proportional to bottom hole pressure and Oil/Water production rates prior to treatment
• Flowing water recoveries do not condemn a well. Some wells produce many times load and have to have fluid level drop below 1000’ from surface before producing OIL!
Bottom LineBottom Line
$ucce$$ful Project?$ucce$$ful Project?
• PRODUCTION BEFORE WELL WORK (UPPER GRAYBURG ONLY) 37 BO, 9 MCF, 181 BW
• INITIAL PRODUCTION AFTER WORK 467 BO, 145 MCF, 3167 BW
• CURRENT PRODUCTION RATE 280 BO, 65 MCF,
2323 BW
AcknowledgementsAcknowledgements• Dick Weinbrandt• Bill Robinson• DOE Tulsa office• The Staff of Laguna Petroleum • Baker-Hughes (previously Scientific
Software Intercorp)• Paul Laverty• Jim Reeves and Hoxie Smith who