盆地模拟技术研究现状及发展方向

EXPLORATIONTECHNIQUES55EXPLORATIONTECHNIQUES5657EXPLORATIONTECHNIQUES58--65CHINAPETROLEUMEXPLORATIONStudyonHydrocarbonAccumulationinDafeng-XinghuaRegioninSubeiBasin/ZuoGuoping,TuXiaolong,XiaJiufeng,XuMeiru//PetroChinaHangzhouGeologicalResearchInstitute,HangzhouCity,ZhejiangProvince310023Abstract:EarlyPaleogene-NeogeneoftheDafeng-Xinghuaregionhasbeenaffectedbyextensionalstrike-slip,presentingastructuralframeworkofÒearlyfaultdepressionandlatesagÓ.Researchshowsthathydrocarbonaccumulationintheregionhasthelawsasfollows:thereservoirdistributioniscontrolledbythehydrocarbon-generatingcenter,thescaleofreservoirsisdeterminedbythesizeofsags,todiscovergoodsandbodiesisveryimportantbecausetheoilbearingseriesissingleandtheindividualreservoiristhinandchangesfasthorizontally,thelargefaultleadingtodeepsagsiscriticaltooilandgasmigrationandnowoilreservoirsarelocatedinthevicinityofthelargefault.Inaddition,theactivityofmostreservoirswiththecharacteristicsoflateralsealinghasceasedbeforesourcerocksgetmature.Structuraltrapsarefavorableoilandgasaccumulationzones,sostructuralreservoirsandstructural-lithologicreservoirsgeneratedfromsmallcomplexfaultsarethemaintypes.Takentogether,themainideaoftodiscoveroilintrapsinoil-richsandbodiesbasedonfaultsisputforward.Keywords:fault;trap;sourcerocks;structuralreservoir;structural-lithologicreservoir;Dafeng-XinghuaregionQuantitativeResearchonCorrelationbetweenReservesAbundanceandDiffusionLossofGasinLargeandMediumGasFieldsinChina/LiJianmin,FuGuang,GaoYuhui//EarthSciencesInstituteofDaqingPetroleumInstitute,DaqingCity,HeilongjiangProvince163318Abstract:47largeandmediumgasfieldsinChinaisbasedonlowabundanceofreserves,thesecondishighandmiddleabundanceofreserves,andtheleastisultra-lowreserves.ThemethodofestimatinggasdiffusionlossissetupbyusingtheFickÕslaw,andthegasdiffusionlossofthe47gasfieldsisestimated.Resultsshowthatthediffusionlossofdifferentgasfieldsvariesalot.Theminimumisonly0.92108m3,whilethemaximumis2286.81108m3.Thelatterisover2200timeshigherthantheformer.Throughtheresearchonthecorrelationbetweenreservesabundanceanddiffusionlossofgasinthe47gasfields,itisshownthatthelowergasreservesabundanceis,thegreatergasdiffusionlossgets,andviceversa.GasdiffusionlossisanimportantcauseofthedecreaseofgasreservesabundanceoflargeandmediumgasfieldsinChina.Keywords:largeandmediumgasfields;naturalgas;diffusionandloss;reservesabundance;quantitativeresearchZeoliteDistributionCharacteristicsandContributingFactorsinSouthernRegionofWestQaidamBasin/GanGuiyuan,LeiZhenfeng,ZhaoDongsheng,LiYuankui,CuiJun//ResearchInstituteofPetroleumExplorationandDevelopment,PetroChinaQinghaiOilfieldCompany,DunhuangCity,GansuProvince736202Abstract:ThezeolitefoundthesouthernregionofWestQaidamBasinismostlyanalcime.Grainyandmassivezeoliteisdistributedinsandstoneintergranularholes,cracks,andcarbonateemposieu.Thezeoliteintheregioncanbeformedbybothmetasomasisandmid-lowtemperatureepithermaldeposition.Analcimeisdistributedinsparrycalcitecement,whilenatroliteisinquartzandfeldsparclasticparticles.Analcimeisdistributedinsparrycalciteandearlycalcitecementiswrappedinnatrolitecement,whichshowsthattheformationofzeoliteislaterthanthatofsparrycalcite.Massivezeoliteismainlydevelopedinreservoirs,andmostlyinoilandgasbearingintervals.Keywords:QaidamBasin;thesouthernregionofWestQaidamBasin;zeolitetypes;distributioncharacteristics;contributingfactorsanalysisMajorLithologicalDistributionandLogResponseAnalysisofVolcanicRockBearingStratainHailarBasin/ZhangMeiling1,ShaoYang1,GaoBoyuan2,LinLili1//1.DaqingPetroleumInstituteofEarthSciences,DaqingCity,HeilongjiangProvince163318;2.CollegeofGeo-ResourcesandInformation,ChinaUniversityofPetroleum,DongyingCity,ShandongProvince257061Abstract:InHailarbasin,thestructureoflithologicalprofilesiscomplex,notonlycontainingvolcaniclavaandnormalsedimentaryrocks,butcontainingtransitionalvolcaniclithology.Basedonalargenumberofcoreexperimentalanalysisanddetailedlogdataanalysis,majorlithologicaltypesanddistributionlawsinNantunFormationandthestratabelowtheFormationaresummedup.WhatÕsmore,thevariationoflogresponsecorrespondentwithmajorlithologyisanalyzedindetails.Theresultoflogresponseanalysisprovidesbasisforcomplexlithologyidentificationinthebasin.Keywords:lithologicaldistribution;logresponse;volcanicrockbearing;HailarBasinBasinModelingTechnologyDevelopmentSituationandItsMainTrends/MiShiyun//ResearchInstituteofPetroleumExploration&Development,PetroChina,Beijing100083Abstract:Ofthiscentury,basinmodelinghassteppedintoahardtimeofitsdevelopment.Thefamousoverseascommercialsoftwarecorporationshavestillbeenworkinghardandhavemadesomeprogressesindifferentaspects.Furthermore,somenewcomersinthisfieldhavejoinedin.From1990stothebeginningofthecentury,basinmodelinginChinaremainedinternationallevelonthewhole,sowehaveagoodbasefordevelopment.Asalong-termresearchproblem,3-Dhydrocarbonmigrationandaccumulationmodelingfacesmanydifficultiesandchallenges,suchasaccuratealgorithmforsimulationequation,consideringandquantitativelyprocessingfaultandothergeologicalfactors,t