1165.陜北斜坡南部長2油氣分布主控因素研究

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3、actorsofOilandGasDistributiononChang2inSouthofShanbeiSlopeSpeciality：MineralogyPetrology&GitologyName：WeiJiamin(signature)碰丘逝△lnstructor：WuFuli(signature)ABS’l。RAC’1。OrdosBasinisrichinabundantoilandgasresources，andit’Sth

4、esecondofChineselargestoilandgasbasinsThestudyareaislocatedsouthofShanbeislopeintheOrdosBasinChang2reservoirgroupisthemainproducingformationInordertostudythemaincontrollingfactorsofreservoir’SdistributioninthisareaUndert

5、heguidanceoftheoriesofsedimentologyandpetroleumgeologyonthebasisofabundantdatafromgeologydrilling，logging，welltesting，etcCombinedwithregionalgeologicalsetting，thestratigraphiedistributionandcorrelation，structuralfeatures

6、，sedimentarymicrofaciesandsandstonedistribution，reservoircharacteristics，etcofChang2arecomprehensivestudiedinstudyareaAlso，thetopofChang1reservoirgrouppalaeogeomorphicWaSrestoredbyusingthetheresidualthicknessmethodSOthat

7、merelationshipbetweenreservoir’SdistributionandtheseareanalyzedFinallythemaincontrollingfactorsofoilandgasdistributionaresummarizedResearchshowsthatChang2reservoirgroupcanbedividedinto21，22and23ThetopstructureofChang2res

8、ervoirgroupisthewest—dippingmonoclinicanddevelopingwithEWnoseupliftwhichisrankeddistributionChang2aredeltaplainanddeltafrontfaciesdepositionOverlappingsandsofdistributarychannelandsubaqueousdistributarychannelarethemainr

9、eservoirsThelithologyaremainlyfinegrainedfeldsparsandstoneandlithicfeldsparsandstoneCombiningreservoirproperties，macroscopiccharacteristicsofthereservoirspace，microscopicporestructurecharacteristics，capillarypressurecurv

10、echaracteristicsandthicknessandlithologyofreservoirinthestudyarea，Chang2reservoirisdividedintoclassIIreservoirComparedwiththeneighborhoodarea，Chang2reservoirhaSthecharacteristicsofhighmoisturecontentAftercomprehensiveana

11、lysis，theancientlandformsofChang2reservoirhavedestructiveeffectsButtherelativelyhighsiteofancientlandforms，thenoseupliftinsuperfacestructureofsandbodyandthickriversandbodyarethemaincontrollingfactorsofreservoirsaccumulat