白音查干凹陷油气成藏特征分析

石油与天然气地质211OIL&GASGEOLOGY20003:1999-07-27:0253-9985(2000)01-0061-04张新建,方建明,唐文忠(,457001):白音查干凹陷的油气藏主要分布于下白垩统巴彦花群腾格尔组中上部,稠油油藏在成油门限之上,稀油油藏在成油门限之下油藏类型主要有:(1)逆牵引背斜油藏;(2)披覆背斜油藏;(3)断块断鼻油藏油气藏的类型和规模受控于生油洼陷区域生储盖组合背斜构造或早期形成的断块构造以及沉积相带或砂体类型:油气藏;分布;类型;控藏因素;白音查干凹陷:张新建,男,39岁,高级工程师,石油地质:P618130:A,NE,150km,15~28km,3200km2,:(K1bd)(K1bt)(K1ba),(K1bd,K1bt),2000104t,111(1)(K1bd,K1bt,K1ba2)(K1bt,K1bd1)K1btK1ba2,K1bt,K1bt,(2)(600~1000m),,(3);(22)12(1),700~1500m,082~086g/cm3,50mPas,,(2)(),(3,:09661g/cm3,:18627mPas)2,,,05km2,50m,,,,2123,211圈闭条件好,,,(1)212低孔低渗型储层,,,,13%,3010-3m2;11%,8510-3m2,,1Fig.13DstructuralmapofoillayertopofTenggarFormationinSanghestructure213不同断块不同层段含油性差异大,3,,90m32,,214原油性质较好,-,20851g/cm3,1412mPas,17!;308616g/cm3,375mPas,16!CaCl2,2263,:221披覆背斜圈闭,,,(2),,(50m)26Fig.2ProfileofoilpoolsinDa6Well222中高孔中渗型储层(),,,,3222%,39010-3m2;6232%,15310-3m2,-223原油密度大粘度大6221,(500m),,,309661g/cm3,18627mPas224油藏充满程度相对较高,,,,25%~36%,6,T550m,10km2,25m,35km2,35%23241,231断块面积小幅度低,500m,(100m),30~100m,05~20km2(3)3Fig.3Profileshowingoilpoolsoffaultblockandfaultnose232中孔中低渗型储层,,2224%,19010-3m2;4141%,410-3m2,-233断块间断块内含油性不同,;,22-1200m,,,,2-1,234原油性质较好,,208409g/cm3,71mPas,15!40822g/cm3,47mPas,15!,235油藏充满程度低,,,210m,1/10;02km2,15%,1~3m,(),,,2-750m-840m(),,,331,:,,,,32,,,,,,,,,33,,,631:23,63,2(K1bt)34,,()(),,,,ANALYSISOFOILGASPOOLCHARACTERISTICSINBAIYINCHAGANDEPRESSIONZhangXinjianFangJianmingTangWenzhong(ScientificResearchInstituteofExplorationandDevelopment,ZhongyuanPetroleumExplorationBureau,Puyang,Henan)Abstract:OilgaspoolsofBaiyinchaganDepressionareprincipallydistributedintheMiddleandUpperpartsofTenggarFormationofBayanhuaGroup,LowerCretaceous.Thereservoirsofthickoilisabovetheoilgenerationthreshold,thinoilisbelowthat.Theremainoilgaspooltypesofthedepressionare:(1)thereversedraganticlinoilpools;(2)drapeanticlinoilpools;(3)faultblockandfaultnoseoilpools.Thepooltypesandscalesarecontrolledbyoilsourcesag,regionalsourcereservoircaprockcomplex,anticlinalstructuresorfaultblocksandsedimentaryfaciesorsandbodytypes.Keywords:oilgaspool;distribution;type;controllingfactor;BaiyinchaganDepression(上接第52页)15,,,.[J].,1992,27(2):34~4016.[M].:,1979.5617,.[J].(B),1994,24(3):303~30918,,.[J].,1999,20(5):365~370MULTIMECHANISMOFHYDROCARBONGENERATIONOFCHINA∀SPETROLIFEROUSBASINSGuoZhanqian1,YangXingke2(1.ResearchInstituteofPetroleumExplorationandDevelopment,DaqingPetroleumAdministration,Daqing,Heilongjiang;2.DepartmentofGeology,NorthwestUniversity,Xi∀an,Shaanxi)Abstract:ThehydrocarbongenerationmechanismofChina∀spetroliferousbasinscouldbedividedintoorganicmechanism,inorganicmechanismandsyntheticmechamismduetotheirsources.Exceptingzonalhydrocarbongenerationmodel,kitchenandcatalyticmodelsoforganichydrocarbongenerationmechanismshouldbetakenintoconsiderableaccount.Thekitchenmodelmeansthattheeruptionandintrusionofigneousmagmaresultedintheaccelerationofmaturationoforganicmatterinsediments.CalalyticmodelmeansthatelementssuchasPd,Fe,Mn,Zn,Cuetc.couldimprovethecombinationofcarbonandhydrogenandproducemorehydrocarbon.ThiscalalyticmodelmightexistinSongliaoBasin,DagangandXinjiangOilfields.Theimportantindicationofinorganichydrocarbongenerationmechanismistheantitoneofcarbonisotopicratioinmethanhomologue,thishasbeenprovedinTarimandSongliaoBasins.ExperimentresultsindicatethatCO2andH2couldbesynthesizedintomethanehydrocarbonwithmeltenironasmedium.Basalt,olivinebasaltandperidotiteburiedindeepstratamayactjustasthemeltenironinlaboratory.Therefore,thereshouldbethecaseofsynthetichydrocarbongenerationmechanismindeepoftheearth.Keywords:hydrocarbongenerationmechamism;hydrocarbongenerationmodel;petroliferousbasin6421