中海油勘探投资组合系统开发与应用

EXPLORATIONMANAGEMENT5455EXPLORATIONMANAGEMENT5657EXPLORATIONMANAGEMENT5859EXPLORATIONMANAGEMENT60CHINAPETROLEUMEXPLORATIONDevelopmentandApplicationofExplorationPortfolioSystemsofCNOOC/MiLijun1,ZhangHouhe2,ChenRong2,WuJingfu2//1.CNOOCExplorationDepartment,Beijing100010;2.CNOOCResearchCenter,Beijing100027Abstract:Theportfoliooptimizingtechnologyisahotspotoftheinternationalpetroleumstudy,whiletheexplorationportfoliosystemisanimportanttooltosupporttheimplementationofexplorationstrategiesandtheplanningofexplorationallocationofthecompany.Basedonsystematicresearchonportfoliooptimizationmethods,anexplorationportfoliosystemfeaturinginadvancedtechnologiesandperfectfunctionisdevelopedinCNOOC.Thesystemcanbeusedfortheeconomicevaluationofexplorationtargets,thesingle-targetandmulti-schemeselection,themulti-targetsyntheticqueuing,thezoneeconomicevaluation,andtheoptimizationofexplorationportfolio.Ithelpstorealizetheintegrationoftheeconomicevaluationofexplorationtargetsandzonesandtheresearchofportfolioandtoenrichthem.Andtheevaluatingprocesscanbemoreappliedtooffshoreexplorationanddevelopment.Thesystemcanbewidelyusedintheevaluationofexplorationtargets,theannualcombinationofdrillingtargets,theseasonaldrillingallocation,andtherollingplanning.Keywords:CNOOC;explorationtarget;explorationzone;economicevaluation;schemeselection;portfolioEmpiricalAnalysisonMarginalOutputofOilandGasExploration/LuoZuoxian//PetroleumExplorationandProductionResearchInstitute,Sinopec,Beijing100083Abstract:Duringexplorationandproduction,thediscoveryofoilandgasreservescanbeconsideredtobetheresultof2Dseismicwork,3Dseismicwork,andwellexploration.Whenthecontributionofexplorationtoreservesdiscoveryismeasured,anoilfieldinChinaisselectedasacase.Aregressivemodelisestablished,takingtheprovedreservesasdependentvariablesandtheexplorationobligationasindependentvariables.Besides,theotherregressivemodelisestablished,takingtheexplorationobligationasdependentvariablesandthe2Dand3Dseismicworkasindependentvariables.Onthebasisoftheregressioncoefficientobtainingfromthetwomodels,thecontributionrateof2Dand3Dseismicworkismeasuredandcalculatedcomprehensively.Thecontributionrateofexplorationobligationtoreservesdiscoverycanbeseenasthebasisformakinginvestmentdecisionsanddeployingworkinoilfields.Keywords:oilandgasreserves;2Dseismic;3Dseismic;wellexploration;regressivemodelResearchonSedimentaryFeaturesandHeterogeneityofReservoirBinKumanOilfield,VolgaBasin/YangShuang1,2,YuJunmin1,ZhaoQuanguo3,LiGuobin1//1ChinaUniversityofGeosciences,Beijing100083;2Exploration&ProductionResearchInstitute,Sinopec,Beijing100083;3LoggingCompanyofPetroChinaHuabeiOilfieldCompany,RenqiuCity,HebeiProvince062552Abstract:ReservoirBisthemajoroilproductionzoneofKumanOilfieldinVolgaBasin,ofwhichtheoilinplaceaccountsfor48.5%ofthetotal.Researchonthesedimentaryfeaturesandheterogeneityofthereservoirisconducted,usingthedrilling,logging,andcoredata.Resultsshowthatthereservoiristidedeltaandtide-deltasedimentaryfacies.Themajoroillayer(C1-andC1-)isdominatedbyduneridges,whilethenon-majoroneisdominatedbytidalchannels,mudflatfacies,andsandflatfacies.Thereservoirpermeabilityvariationcoefficientsrangefrom0.42to1.62,andthemutationcoefficientsarebetween1.87and6.69.Thepermeabilityratioishigher.Theinterlayerheterogeneityandtheinnerheterogeneityarestrong,whiletheplaneheterogeneityisweaker.ComprehensiveevaluationshowsthattheC1-andC1-layersfeatureinstableplanedistributionandgoodconnectivity,andtheyarefavorablefordevelopment.TheC1-,C1-,andC1-layersfeatureinsevereheterogeneity,smallpetroliferousarea,andthinoillayers,andtheyareunfavorablefordevelopment.Keywords:VolgaBasin;KumanOilfield;Breservoir;sedimentaryfeature;heterogeneityAnalysisofInfluencingFactorsonHydrocarbonDiscoveriesinPaleozoicHydrocarbonBasins,Libya/LuJingmei,HuangXingwen//InternationalResearchDepartmentofCNOOCResearchCenter,Beijing100027Abstract:TherearesixhydrocarbonbasinsinLibya,inwhichfourarePaleozoichydrocarbonbasins,i.e.,theGhadamisBasin,theMurzuqBasin,theKufraBasin,andtheCyrenaicaBasin.Theprovedreservesofthebasinsaccountfor9%ofthetotalinthewholecountry.OtherreservescentralizeinMesozoicandCenozoicbasins.Basedonthestudyoftheexplorationhistoryoftheoilfieldsandbasinswithhydrocarbondiscoveries,threefactorsinfluencingPaleozoichydrocarbondiscoveriesarerecognized,namely,thepetroleumgeologyconditions,theexplorationdegree,theworldsituationandnationalpolicies.Thepetroleumgeologyconditionisthemostcriticalone.GhadamisandMurzuqbasinshavefavorablepetroleumgeologyconditionsamongthefourbasins.Inrecentyears,therelationshipbetweenLibyaandU.S.ismuchbetterthanbeforeandthenationalpoliciesarefavorable,sotheexplorationinvestmentinPaleozoicbasins,especiallyintheMurzuqBasin,increasealot,andnewdiscoveriesaremadeincreasingly.ThePaleozoicbasinsarebecominghotspotsinexploration,andtheyshouldbepaidmoreattentionbyChineseoilcompanies.Keywords:Libya;Paleozoic;hydrocarbonbasin;explorationhistory;hydrocarbondiscovery;influencingfactor