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时间:2019-11-25
《济阳坳陷古近系沙四段上亚段烃源岩沉积有机相研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2011年12月,第l7卷,第4期,586—593页December2011,Vo1.17,No.4,P.586-593济阳坳陷古近系沙四段上亚段烃源岩沉积有机相研究刘庆,张林晔,宋国奇,王茹1.中国石化胜利油田分公司地质科学研究院,东营257015;2.胜利油田博士后工作站,东营257015;3.中国石化胜利油田分公司,东营257015摘要:根据沉积构造、古生物组合、有机质赋存方式等特征研究,明确了沉积过程底水含氧量对古近系湖相烃源岩中有机质的组成和含量的控制作用。在此基础上借鉴沉积有机相和古氧相研究的成果,将济阳坳陷古近系沙
2、四段上亚段湖相烃源岩划分为四种沉积有机相,分别为缺氧相、短暂充氧相、低氧相、充氧相,并且确定了不同类型沉积有机相的判识标志。并结合测井资料开展了烃源岩沉积有机相的单井、连井及平面分布特征分析,提出沙四段上亚段烃源岩的发育存在着明显的东西差异,东部地区明显优于西部地区,而不同走向断裂的活动差异控制了优质烃源岩的分布。沙四段上亚段烃源岩的分布规律对于下一步勘探决策的制定和深层隐蔽油气藏成藏规律研究具有重要意义。关键词:济阳坳陷;沙四段上亚段;沉积有机相;测井曲线;断裂活动中图分类号:P618.130文献标识码:A文章编号:1006—
3、7493(2011)04—0586—08SedimentaryOrganicFaciesofthePalaeogeneUpperE23S4Source—gaRocksinJiyangDepression高LIUQing,ZHANGLin—ye’,SONGGuo.qi。,WANGRu’校f1.GeologyScientificResearchInstituteofShengliOilfieldBranchCompany,SINOPEC,Dongying257015,China;C2.Post—doctoralScientificR
4、esearchStationofShengliOilfield,Dongying257015China;电,3.ShengliOilfieldBranchCompany,SINOPEC,Dongying257015,China质Abstract:Investigationofsedimentarystructures,palaeontologyassociationsandorganicmatteroccurrenceshowsthatthe学SlacustrinedepositionofPalaeogeneupperE2_3s
5、hydrocarbonsourcerocksissignificantlycontrolledbythebottomanoxicityinJiyangDepression.Basedonthepreviousstudiesonsedimentaryorganicfaciesandpalaeo—oxygenfacies,thesourcerocksare报dividedintofourtypesofsedimentaryorganicfaciesincludinganoxicfaciesanaerobicfacies,dysaer
6、obicfacies,andaerobicfacies,andtheidentificationmarkersofeachfaciesaresummarized.Togetherwithwellloggingdata,theupperE23Ssourcerocks—areevaluatedbysinglewell,well—tieanddistributionofsedimentaryorganicfaciesanalyses.Theresultsshowgreatdifferenceintheoccu~enceoftheupp
7、erE23Shydrocarbonsourcerocksfromtheeasttothewest,andtheuppersourcerocksintheeastareobviouslysuperiortothoseinthewest.Inaddition,itisfoundthatthedistributionofexcellentsourcerocksismainlycontrolledbythenorthwestandnortheastfauhingmovement.Thefindingwillhavegreatsignif
8、icanceformakingfutureexplorationstrategyandunderstandingdeepsubtlereservoirformation.Keywords:SedimentaryOrganicFacies,JiyangDepres
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