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Home My WebLink About2012 Eider Oil Pool Annual Reservoir Surveillance Report Duck Island Unit Eider Oil Pool January 2012 through December 2012 Completed: March 2013 2 Table of Contents Page A.ProgressofEnhancedRecoveryProjectImplementa tionandReservoirManagement Summary....................................................................................................................................3 B.VoidageBalancebyMonthofProducedFluidsand InjectedFluidsandCumulativeStatus....4 C.AnalysisofReservoirPressureSurveysWithinth ePool.........................................................5 D.ResultsandAnalysisofProductionandInjection LogSurveys,TracerSurveysand ObservationWellSurveys...........................................................................................................7 E.ReviewofPoolProductionAllocationFactorand IssuesOverthePriorYear..........................7 F.FutureDevelopmentPlans......................................................................................................7 3 A) Progress of Enhanced Recovery Project Implementation and Reservoir Management Summary BPXAdrilledtwowellsintotheEiderreservoir:2 -56A/EI01(“Eider1”)and2-30A/EI02 (“Eider2”).TheEider2wellwasshutinMay1999 attheendoftheapprovedtest period,andtheEider1wellwasshutinSeptember 1999.BPXAconvertedtheEider1 well to water injection in June 2000 after receivin g the proper Endicott partner approval.ProductionfromEider2wellrecommenced inJune2000withthestartof water injection. Over the next couple of years, st atic bottomhole pressure (SBHP) measurementswereobtainedinbothEiderwellstod eterminetheextentofpressure support.WithSBHP’srisingintheEider1wellan dfallingintheEider2well,there was a clear indication that the producer / injector pair were not in pressure communicationwithoneanother.BPXAconvertedthe Eider1wellbacktoproduction inJuly2004andsubsequentlyperforatedshallower sandsinbothwells.TheEider2 wellwassidetracked(2-30B/ME-01)in2009totheM inketarget,aSagRiver/Ivishak formationsatelliteprospect. Producer2-56A/EI01wasbroughtonlineoncein2009 toconductawelltestwhich indicated that the production characteristics of th e well had not changed. (1 bopd, watercut~100%).Sincethiswelltest,thewellha sbeenshut-induetouncompetitive watercut. There were 0 daysof production from the Ivishak fo rmation for the time period of January2012throughDecember2012.Cumulativeprod uctionthroughDecember2012 was2.75mmstboil,26.52bscfgas,and5.52mmstb water. TherewasnoinjectionintotheIvishakformationf orthetimeperiodofJanuary2012 through December 2012. Cumulative injection throug h December 2012 was 4.33 mmstbwater. All produced fluids have been processed through the Endicott facility as stipulated underconditionswithintheEndicottFacilityShari ngAgreement.Producedgas,other thanthatusedforfuel,hasbeenre-injectedinto theEndicottreservoirgascap. 4B) Voidage Balance by Month of Produced Fluids and Injected Fluids and Cumulative Status 5 C) Analysis of Reservoir Pressure Surveys Within the Pool OnepressuresurveywascompletedinJune2012in2 -56A/EI01. Well Date Extrapolated Pressure at -9700’ TVDss Datum (psia) Data Source 2-56A/EI01 6/30/2012 4370 SBHP Pressure data since startup are graphically represented in the next figure that is a plot of pressure versus time. These data indicate pressures have not changed significantly in the past year. 6 Eider Pressure Data 7 D) Results and Analysis of Production and Injection Log surveys, tracer surveys and observation well surveys No production, injection logging or tracer surveys were performed during 2012 on wells in the Eider Pool E) Review of pool production allocation factors and issues over the prior year The allocation factor for Eider well has been set at 1.0 when the wells are producing. F) Future Development Plans Annual pressure testing and reservoir characterization work on the Eider pool will continue. Upon identification of any potential targets, BPXA will evaluate wellwork and sidetrack opportunities in order to increase recovery from the Eider PA. The potential to redeploy the remaining Eider well to targets outside the Eider Participating Area may also be considered.