鄂尔多斯盆地定边地区延安组延10低渗储层微观特征  

MICROSCOPIC CHARACTERISTICS OF LOW-PERMEABILITY YAN 10 MEMBER OF YAN'AN FORMATION IN DINGBIAN AREA,ORDOS BASIN

作　　者：崔宏伟[1] 陈义才[1] 任庆国[2] 王战永[1] 张雁[3] 

机构地区：[1]成都理工大学能源学院 [2]中国石化胜利油田公司孤岛采油厂 [3]中国石油长庆油田公司采油三厂

出　　处：《天然气勘探与开发》2011年第2期15-17,33,共4页Natural Gas Exploration and Development

摘　　要：根据岩性、铸体薄片、物性、孔隙结构等分析化验资料对鄂尔多斯盆地定边地区延安组延10储层特征的研究结果表明:延10储层岩性主要是岩屑长石砂岩,其次是含长石石英砂岩以及长石砂岩;储集空间以剩余原生粒间孔、粒间溶孔为主,属于中孔低渗储层,渗透率变化范围较大;储层属中孔细喉型,排驱压力和中值压力较低。Based on some data from lithological,casting thin-section,physical property and porous structure analysis,a systematically study on reservoir characteristics of Yan 10 Member is implemented.Results illustrate that:(1) the reservoir is mainly composed of debris feldspar,partly quartzose sandstone with feldspar and feldspar sandstone;(2) its space mainly includes residual primary intergranular pore and dissolution pore;(3) it is featured by middle porosity and low permeability,large variation in permeability;(4) for the reservoir,both displacement pressure and medium pressure are very low;and(5) it is a medium-porous and fine-throat reservoir.

关 键 词：鄂尔多斯盆地 延安组 物性特征 储层特征 

分 类 号：P618.13[天文地球—矿床学]