惠民凹陷大芦家地区东营组二段储层特征及其控制因素  

Reservoir characteristics and controlling factors of the second member of Dongying formation in Dalujia area,Huimin depression

作　　者：李晓露 何幼斌[1] 王宁[1] 邢杨[1] 张鑫[1] LI Xiaolu;HE Youbin;WANG Ning;XING Yang;ZHANG Xin(School of Geoscience,Yangtze University,Wuhan 430100,China)

机构地区：[1]长江大学地球科学学院,武汉430100

出　　处：《中国科技论文》2018年第9期1002-1011,共10页China Sciencepaper

基　　金：湖北省创新群体基金项目(2015CFA024)

摘　　要：通过岩心、薄片、测井等基础资料,运用高分辨率层序地层学理论,将小层作为研究对象,对惠民凹陷大芦家地区东营组二段(Ed2)储层岩石类型、孔隙类型和物性进行研究,并根据测井二次解释结果,对区内Ed2储层非均质性及储层控制因素进行了研究分析。研究表明,研究区Ed2储层属于中孔-中渗储层;岩石类型多为长石质石英粉砂岩和细砂岩,储层孔隙类型以次生粒间溶孔为主,发育少量原生粒间孔;层间非均质性较弱,而层内和平面上具有较强的非均质性,沉积微相对储层非均质性强弱具有显著影响;储层物性变化的主要控制因素为沉积环境、成岩作用和基准面旋回,中期基准面旋回变化对储层发育的控制作用更为明显。By the cores,thin-section,well logging and other basic data,applying the high-resolution sequence stratigraphy theory and taking the single layer as the study object,the reservoir of the second member of the Dongying Formation（Ed2）in Dalujia area in Huimin depression has been investigated in detail,including petrological characteristics,pore structure characteristics and physical characteristics.In addition,according to the results of the logging secondary interpretation,the reservoir heterogeneity and the controlling factors of physical property in Ed2 have also been studied.The results show that the Ed2 reservoir in the study area belongs to the middle porosity-middle permeability reservoir.Most of the rock types are feldspar quartz powder sandstone and fine sandstone,the pore type of reservoir is mainly the secondary intergranular dissolution,the development of a small number of primary intergranular pores,the weak interlayer heterogeneity,and the layer of peace surface with strong heterogeneity,the sedimentary microfacies have significant influence on the heterogeneity of the reservoir.The main control factors of reservoir physical property change in this research area are sedimentary environment,diagenesis and Datum cycle three,of which the medium-term base cycle change has more obvious controlling effect on reservoir development.

关 键 词：大芦家油藏 东营组二段 基准面旋回 非均质性 成岩作用 

分 类 号：P534.51[天文地球—古生物学与地层学]