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HarougeOilOperationsWellDrillingProgramEnNagaWellB21-NC177Conc177/B21/Design/DrillingProgram/B21-177DrillingProgramPage1-24Preparedby:AChiterRevision:Final-01Nov9,2008HarougeOilOperationsONSHORELIBYASIRTEBASINDRILLINGPROGRAMWell:B21-NC177Field:EnNagaObjectiveFormation:ZeltenWellType:InjectionEnNagaNorthPhaseIIDevelopmentProjectNovember9th,,2008资料下载网(点击进入）HarougeOilOperationsWellDrillingProgramEnNagaWellB21-NC177Conc177/B21/Design/DrillingProgram/B21-177DrillingProgramPage2-24Preparedby:AChiterRevision:Final-01Nov9,2008WELLDRILLINGPROGRAMWellNameB21-NC177Classification(A-O)DevelopmentinjectorWellConfigurationVerticalcasedholeField/ConcessionEnNaga/NC177SurfaceLocationLatitude27°36’7.476”NorthLongitude18°28’17.543”EastElevation(Approximately)GL974ft(Confirmedaftersurvey)KB1005ftEstimatedTotalDepth~6543ftKB(5569ftSubsea)PrimaryObjectiveZelteninjectionPurposeofDrillingProducewaterfromupperGIRandinjectintoZeltenOperatorHarougeOilOperationsCompletionPerforate95/8”casingandrunESPtoprovideadditionalinjectionpressure.Estimatedwellcost$4.3mmUSDDrillingcontractor/rigGW#118LoggingcompanyCNLCCementingcompanyHalliburtonDrillingFluidsAlamia.MudLogingAlamiaDrillingSummaryHoleSectionHoleSizeDepth(ft)CsgSizeCommentsConductor17½/26”±12020”Surface17½”±1630133/8”Possiblelosscirculation,unconsolidatedsandsIntermediate12¼”±654395/8”PossibleH2S资料下载网(点击进入）HarougeOilOperationsWellDrillingProgramEnNagaWellB21-NC177Conc177/B21/Design/DrillingProgram/B21-177DrillingProgramPage3-24Preparedby:AChiterRevision:Final-01Nov9,2008GeneralApplications:Losses:TreatlosseswithLCMmaterialorkeepLCMinmudsystemtotreataspenetrated.Wellheads:The135/8”casingbowldoesnothavelockdownforwearbushing.Thereforewearbushingnotrunwhiledrilling12¼”holeaswearbushingwouldspinandwearbowl.Shouldalsoconsidertheslipandsealassemblycasingbowlwhichdoesnotrequireanywelding.PDCBitPerformance:B14:ReedHycalogDSX813-Interval3333-5626ft,ROP17ft/hr,100RPM,585GPMB15:ReedHycalogDSX813-Interval3626-5635ft,ROP14ft/hr,120RPM,580GPMB16:SecurityFMH3653Zonlow/mediummotor-Interval3260–4606(ROP27ft/hr)and4608–5761ft(ROP21ft/hr),160-220RPM,450GPMB16:ReedHycalogDSX813-Interval6331–6549(ROP14.5ft/hr)and6549–8560ft(ROP18.9ft/hr),90-RPM,700GPM,20KWOB.B18:ReedHycalogRSX813-Interval4120–5920(8½”)(ROP19.3ft/hr)140-RPM,550GPM,10KWOBAmendementsAmendmentswillbeissuedfromDrillingDepartment“Tripoli”andapprovedbytheDrillingOperationsCoordinatorandDrillingManager.AlldrillingmudrelatedissuesregardingchangesshallnottakeplacewithouttheapprovalfromtheDrillingDepartment(Tripoli).资料下载网(点击进入）HarougeOilOperationsWellDrillingProgramEnNagaWellB21-NC177Conc177/B21/Design/DrillingProgram/B21-177DrillingProgramPage4-24Preparedby:AChiterRevision:Final-01Nov9,2008SUBSURFACEDATAINFORMATIONLithologyAsperIntenttoDrill’sStratigraphicSummaryforEnNaga.MainobjectiveistodrilltobottomofZeltenBat6543ft,setcasing95/8”andcompleteasaninjectorwell.TheinjectionmethodenvisagedistoproducewaterfromUpperGirreservoirandinjectthiswaterintoZeltenAoilreservoirwithoutitcomingtosurface.InordertoincreaseinjectedvolumeitisproposedtouseanESPtoprovideadditionalpressureinjection.Logging–Wireline26”Conductor:Nologsrequired.17-1/2”SurfaceHole:Nologsrequired12-1/4”ProductionHole:DLL-MSFL-CNL-TLD-PE,CAL-NGS-BHC-SP,FMIorequivalentRFTacrossupperGIRlowerGIRandZELTEN,USIT,CBL,GRincasedholeCoring/TestingNocorerequired.CompletionProgramtobeissuedatalaterdate.FormationTopsSeeDrillingSummary.SampleRequirementsTypeInterval(ft)NumberRequiredFrequency0-120Three(3)DryEvery30Feet120-1630Three(3)DryEvery30FeetCUTTINGS1630–TDThree(3)DryThree(3)DryEvery30FeetEvery10feetinreservoir.AsperGeologyDepartmentrequirements.OffsetDrillingInformation.Offsetdatafromwellsinfield:WellSurfaceCasingSize&DepthCementReturnsCommentsLeak-offValue-EMWProductionCasingSize&DepthCementReturnsCommentsJ195/8”@2898ftn/a13.7ppg@3072ft7”@5745ftn/aCasingleaknocementandgroundwatercorosion.B1133/8”@3109ftn/an/a95/8”@6750ftn/a7”linerset@8740ftB2133/8#@2096ftFull11.7ppg@2080ft---CasingstuckandCIP,TDwas2415ft.B3133/8”@2166ftFull12.0ppg@2166ft95/8”@8455ftFullCasingstuckandCIP,TDwas3084ft.B495/8”@3019ftFull13.8ppg@3020ft7”@6505ftn/a资料下载网(点击进入）HarougeOilOperationsWellDrillingProgramEnNagaWellB21-NC177Conc177/B21/Design/DrillingProgram/B21-177DrillingProgramPage5-24Preparedby:AChiterRevision:Final-01Nov9,2008B595/8”@3010ftNone13.9ppg@3020ft7”@6498ftn/aLost110bblsduringsurfacejob.B695/8”@3025ftFull13.9ppg@3035ft7”@6535ftn/aB795/8”@3135ftn/a13.7ppg@3145ft7”@6518ftn/aBitballingB895/8”@2898ftn/a13.5ppg@3070ft7”@5580ftn/aB9B10B11133/8”@3053ftn/an/a95/8”@5645ftFullB12133/8”@3083ftNonen/a95/8”@5645ftn/aB13133/8”@3122ftn/a12.0ppg@3127(PIT)95/8”@5803ftFullB14133/8”@2990ftn/an/a95/8”@5626ftn/aB15133/8”@3125ftFull14.1ppg@3135ft95/8”@5635ftFullB16133/8”@3112ftFull12.3ppg@3115ft95/8”@8556FTn/aNolosscirculationB18133/8”@1724ftFull95/8”@3989FTsetatthisdepthbecauseoftotallossat3185.losscirculationWellDriller