冀中坳陷沉积演化与岩性油气藏勘探

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1、第31卷增刊1石油钻采工艺Vo1．31Sup．12009年6月OILDRILLING&PRODUCTIoNTECHN0LoGYJune2009文章编号：1OOO一7393(2009)S1—0001—08冀中坳陷沉积演化与岩性油气藏勘探梁宏斌崔周旗卢学军王海潮董雄英彭宁(华北油田公司勘探开发研究院，河北任丘062552)摘要：利用大量钻井、测井、地震信息，结合古生物等分析资料，对冀中坳陷古近系层序格架及沉积演化进行了研究，系统划分出1个一级层序、3个二级层序和13个三级层序，构建了沉积演化经历的5种沉积充填样式和完整的断陷一坳陷期沉积充填序列，探讨了纵向上的上、中、下3套成油组

2、合与岩性油气藏的分布关系。依据构造背景、层序类型和沉积体系“三要素”，在陡坡、洼槽、斜坡和洼中隆起带细分出4类、2o种构造岩相带类型，并按不同成油组合对浅一深层岩性油气藏有利勘探区带进行了综合评价，优选出了14种有利构造岩相带，指出了有利勘探方向，有效地指导了岩性油气藏勘探。关键词：冀中坳陷；古近系；层序格架；沉积演化；成油组合；构造岩相带；岩性油气藏中图分类号：TE121．3文献标识码：ADepositionalevolutionandlithologicreservoirexplorationinJizhongdepressionLIANGH0ngbin，CUIZh0uq

3、i，LUXuejun，WANGHaicha0，DONGXi0ngying，PENGNing(ResearchInstituteofExplorationandDevelopment，HuabeioieldCompany，Renqiu062552，China)Abstract：Basedonanalysesofalargeamountofdrillingdata，loggingcurves，seismicinformationandpaleontologicfos—sils，thesequenceframeworkanddepositionalevolutionofpaleog

4、eneinJizhongdepressionwerestudied．Theresultsshowthatthestrataofpaleogenecanbedividedintoonefirst—ordersequence，threesecond—ordersequencesandthirteenthird—orderse—quenees．Thedepositionalevolutionofpaleogenehasexperiencedfivefillingtypesandmadeaverticalfillingseriesfromfault—subsidencetodepre

5、ssionperiod．Moreover，therelationshipsbetweenthreeoil—bearinggroupsinupper，middleandlowerpartsofverticalsectionanddistributionoflithologicreservoirwereinvestigated．Accordingtothreegeologicalkeyelementsincludingstructuralsetting，sequencetypesandsedimentarysystems，fourtypesandtwentykindsofstru

6、cture—petrographical，zonationsaresummarizedindifferentzones，suchassteepslope，sub—sagarea，gentleslopeandcentraluplift，Fordifferentoil—bearinggroups，comprehensiveevaluationforfavorableexplorationzonesfromshallowtodeepstratawasconducted．Fourteentypesofstructure—petrographicalzonationswerefinal

7、lyselectedasfavorableexplorationzones．Theworkcanprovidereferenceforex—plorationoflithologicreservoireffectively．Keywords：Jizhongdepression；Paleogene；sequenceframework；depositionalevolution；oil—bearinggroup；structure—pe—trographicalzonation；lithologicrese