鄂尔多斯盆地延长油田H区块长4+5储层特征研究  

Research on Characteristics of Chang 4+5 Reservoir in Block H of Yanchang Oilfield in Ordos Basin

作　　者：何强 贾婷 孙孔明 HE Qiang;JIA Ting;SUN Kong-ming(Sichuan Nengtou Oil and Gas Exploration and Development Company Limited,Chengdu 610095,China;The Third Oil Production Plant of Changqing Oil Field Branch,Yan'an,750006,China)

机构地区：[1]四川省能投油气勘探开发有限公司,成都610095 [2]长庆油田分公司第三采油厂,陕西延安750006

出　　处：《西安文理学院学报（自然科学版）》2022年第3期117-120,共4页Journal of Xi’an University(Natural Science Edition)

基　　金：陕西省自然科学基金项目:“页岩油储层微—纳米孔喉系统量化表征及对可动流体赋存状态控制机理研究”(2022JQ-290)。

摘　　要：为提升延长油田H区块长4+5储层特征认识水平,本次研究运用录井、测井、薄片分析、电镜扫描等手段,对研究区长4+5储层岩石类型及成分、物理性质变化、喉道差异性以及岩石变化过程进行了综合研究,并分析了油层组物理性质差异性主要影响因素.研究表明,H区块长4+5储层主要为长石砂岩,胶结物主要为方解石,颗粒分选较好,岩心分析平均φ为8.9%,平均K为0.86mD,综合评价属于超低渗透性储层.In this paper,in order to improve the understanding level of Chang 4+5 reservoir characteristics in block H of Yanchang oilfield,by using of well log,logging,thin section anal⁃ysis,electron microscope scanning and other means,the rock type and composition,physical property change,throat difference and rock change process of Chang 4+5 reservoir in the study area are comprehensively studied,and the main influencing factors of physical property differ⁃ence of oil formation are analyzed.The research shows that Chang 4+5 reservoir in block H is mainly feldspathic sandstone,the cement is mainly calcite,the particle sorting is good,and the averageφof core analysis is 8.9%and the average K is 0.86mD.It belongs to ultra-low perme⁃ability reservoir through comprehensive evaluation.

关 键 词：长4+5储层 物理性质 超低渗透性储层 

分 类 号：O438.2[机械工程—光学工程]