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1、中国石油大学胜利学院本科生毕业设计(论文)孤东二区Ng沉积相研究学生姓名崔新颖学号200610012102专业班级资源勘查工程06级1班指导教师:常兵民2010年6月6日摘要本文主要通过岩心和薄片观察、粒度分析、测井资料解释等手段,对孤东油出二区馆陶组沉积相进行了研究。通过进行单井和连井剖面相分析以及综合相关地质资料,建立了孤东油出二区馆上段沉积微相模型,阐明了该区域内沉积微相的展布与演化规律,揭示了沉积微相对储层物性、剩余汕分布规律的重耍控制作用。研究表明:该区发育馆上段上部曲流河与下部辫状河两种沉积和模式,具备河床亚和、堤
2、岸亚和、河漫亚相和废弄河道亚相四种亚相类型,具有边滩、河道充填沉积、心滩微相、谷底滞留沉积、河道边缘、决口扇、道间洼地和漫滩沉积等8种沉积微相。平面上沉积微相屮以边滩、河道边缘、河漫沉积为主,砂体呈席状、条带状、豆荚状等,分叉、交叉频繁,厚度变化较快。沉积微相对储层物性和剩余汕分布具有控制作用,该区沉积微相模型的建立对储层非均质性研究及控水稳油和寻找剩余油气具有重要意义。关键词:沉积特征;相模式;微相类型;馆上段;孤东油田二区ABSTRACTInthispaper,coreandslicethroughobservation,
3、particlesizeanalysis,loggingdatainterpretationandothermeans,GuantaoGudongOilfieldassedimentaryfacieswerestudied.WellconnectedthroughtothesinglewellandintegratedfaciesanalysisandgeologicaldatarelatedtotheestablishmentoftheisolatedEastOilfieldasintheuppersedimentaryfa
4、ciesmodel,illustratestheregionmicrofaciesdistributionandevolution,revealingthesedimentarymicrofaciesreservoirproperties,theremainingoildistributionoftheimportantcontrolfunction.Theresultsshowthat:thearea-stepsdevelopedintheupperriverandthelowerpartofthebraidedriverf
5、aciesmodeloftwo,withriverfacies,subfaciesembankment,RiverMansubfaciesandabandonedchannelfaciesoffoursub-facies,withbeachside,channeldeposits,theheartbeachfacies,bottomsedimentretention,riveredge,crevassesplay,floodplaindepositslocatedbetweendepressionand8kindsofsedi
6、mentaryfacies.Micro-phasedepositionplanetosidebeach,riveredge,riverdiffusedepositsinthesandtakestheshapeofsheet,strip,pod-like,etc.,bifurcation,cross-frequentchangesinthethicknessoffast.SedimentarymicrofaciesReservoirandtheremainingoildistributioniscontrolled,thedis
7、trictsedimentaryfaciesmodelofthereservoirheterogeneityandcontroloilandwaterstabilityisimportanttofindtheremainingoilandgas.Keywords:Sedimentarycharacteristics;Faciesmodels;Faciestype;Intheupper;GudongOilfield目录亠厶“—1—<刖吕第一章开发情况及区域概况21.开发情况21.1开发历程21.2开发现状及问题22.区域概况2第
8、二章区域地层特征41.砂层组特征42.砂体类型53.储集物性54.标志层特征6第三章沉积微相划分依据61.孤东二区馆上段的沉积特征71.1岩石的颜色特征71.2岩石的结构和成分特征71.3粒度分析71・4•沉积构造和测井响应81.5古生物标志91.6沉积层序92.沉积微相类型