临盘油田临二断块馆陶组储层非均质性研究  

Study on the Reservoir Heterogeneity of Guantao Formation in Lin No.2 Fault Block in Linpan Oilfield

作　　者：瞿晓文[1] 常象春[2] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]山东科技大学地球信息科学与工程学院,山东青岛266510

出　　处：《山东科技大学学报（自然科学版）》2007年第5期11-15,29,共6页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(40502013)

摘　　要：对临二断块馆三段储层特性进行了分析,研究表明:平面上该河道砂体厚度横向变化具有明显的方向性,孔隙度与渗透率的分布相对均质,其分布受沉积微相控制;垂向上,孔隙度高且变化较小,变异系数也较小,渗透率略呈正韵律,渗透率单层突进系数、变异系数、渗透率级差相对较小。心滩坝与河道充填储层非均质性属中等,是油田开发最有利的油层;河道边缘储层非均质性较强,是油田开发中较差的油层。河流相相变快是造成平面非均质性的重要因素;不同沉积方式决定了不同微相的层内非均质性;不同时期发育的河道砂体在较短距离内相互叠置,是造成层间非均质性的主要原因。Physical properties of E2 g3 reservoir in Lin No. 2 Fault Block are analyzed to describe its heterogeneity. The results indicate that lateral variation of channel sand bodies of E2 g3 is directional. Plane occurrences of porosity and permeability are relatively homogeneous under the control of sedimentary microfacies. In vertical, porosity is high and small-changed, so is the coefficient of variation. Occurrences of permeability are slightly positive rhythm and rush coefficient, coefficient of variation and permeability differential in individual horizon are relatively small. Reservoirs of channel bar and channel sand bodies are moderately heterogeneous, as the favorable targets for devel- opment, while reservoirs occurred along channel margin were strongly heterogeneous, being the bad targets for de velopment. Plane heterogeneity was resulted from fast variations of fluvial facies. Intraformational heterogeneity was produced by different sedimentary modes. Channel sand bodies developed in different stages are overlapped in short distance, leading the interlayer heterogeneity.

关 键 词：储层 非均质性 河流相 成因 

分 类 号：P618.11[天文地球—矿床学]