储层特征及其主控因素分析——以鄂北十里加汗地区下二叠统山西组为例  

Reservoir characteristics and main controlling factor analysis:taking Lower Permian Shanxi Formation in Shilijiahan area of North Ordos Basin as an example

作　　者：赵明胜[1] 田景春[2] 张翔[2] 苏炳睿[2] ZHAO Mingsheng;TIAN Jingchun;ZHANG Xiang;SU Bingrui(College of Paleontology,Shenyang Normal University,Shenyang 110034,China;Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]沈阳师范大学古生物学院,辽宁沈阳110034 [2]成都理工大学沉积地质研究院,四川成都610059

出　　处：《断块油气田》2020年第2期155-159,共5页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项“低丰度致密低渗油气藏开发关键技术”(2016ZX05048);辽宁省自然科学基金指导计划项目“辽东本溪地区晚石炭世本溪期煤系地层的沉积环境及物质聚集规律”(2019-ZD-0488);沈阳师范大学博士、引进人才科研项目启动基金“基于矿物成分的玄武岩脆性及其裂缝响应定量研究”(BS201911)。

摘　　要：鄂尔多斯盆地十里加汗地区处于准连续成藏区,是上古界天然气有利的勘查地区。文中对十里加汗地区下二叠统山西组储集砂体的岩石学、孔隙结构及物性特征进行了研究。研究表明,山西组储集砂体物性较差,属于低孔、低渗储集层。孔隙类型多样,发育有残余粒间孔、次生粒间孔、粒内溶孔、铸膜孔、晶间孔、微裂缝等,具有储集意义的主要有残余粒间孔和次生粒间孔。另外,储层发育主要受到沉积作用及后期成岩演化作用的控制,沉积作用奠定了储层的物质基础,成岩演化改善了储集砂体物性。The Shilijiahan area in Ordos Basin,located in a quasi-continuous reservoir-forming area,is a favorable exploration area for natural gas in the Upper Paleozoic.In this paper,the petrology,pore structure and physical properties of the reservoir sand bodies of Lower Permian Shanxi Formation in Shilijiahan area were studied.The results show that the reservoir sand bodies of Shanxi Formation has poor physical property,and belongs to low porosity and low-permeability reservoirs.There are many types of pores in the rock,including residual intergranular pores,secondary intergranular pores,intragranular dissolved pores,casting film pores,intercrystalline pores and microfractures.among them,the residual intergranular pores and secondary intergranular pores contribute greatly to the reservoir.In addition,reservoir development is mainly controlled by sedimentation and subsequent diagenetic evolution.Sedimentation laid the physical foundation,and subssequent diagenetic evolution effectively improved the physical properties of reservoir sand bodies.

关 键 词：储层特征 主控因素 山西组 十里加汗地区 鄂尔多斯盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]