苏里格气田SN区块盒8段储层特征研究  

Research of reservoir characteristics of He8 Member in Block X of Sulige gasfield

作　　者：崔越华[1,2] 费世祥[1,2] 于秀英 张保国[1,2] 刘雪玲[1,2] 王金成[1,2] 安志伟[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程试验室 [3]中国石油长庆油田苏里格南作业分公司

出　　处：《低渗透油气田》2015年第1期33-39,共7页

基　　金：基金项目：中国石油天然气股份有限公司科技重大专项“长庆油田油气当量上产5000万吨关键技术研究”（编号：2011E-1306）.

摘　　要：针对苏里格气田SN区块中二叠统石盒子组盒8段储层岩石学、孔隙发育及物性特征开展综合研究。研究表明．盒8段储层岩石类型主要为岩屑石英砂岩和岩屑砂岩，其中盒8上亚段与盒8下亚段主要岩石类型分别为岩屑砂岩和岩屑石英砂岩．岩石组分差别较小；储层孔隙类型主要为溶孔、晶间孔和局部裂缝，原生残余粒间孔相对较少，偶见裂缝发育：孔隙结构整体表现为小孔隙、小喉道、孔喉连通性差的显著特征；物性整体较差，非均质性强，为典型的低孔、低渗储层。对盒8段储层进行了综合评价分类，整体以Ⅱ类与Ⅲ类储层为主，Ⅱ类储层物性相对较好，为研究区内的有利储层。A comprehensive study is carried out for the He8 Member of Permian Shihezi Formation in Block SN of Sulige gasfield on the petrology, pore development and physical characteristics The results show that, reservoir rock types of the He8 Member are mainly lithie quartzose sandstone and lithic sandstone. The main rock types of those on and under the He8 are respectively lithic sandstone and lithic quartzose sandstone, with a small dif- ference in their rock eomponents. Pore types of the reservoirs are mainly solution pores, intercrystalline pores and local fissures, with relatively less o- riginal residual intergranular pores, and developed fractures occasionally met by chance. The overall pore structure shows salient features of small pores, small throats, and poor pore-throat connectivity. The physical properties are overall poor, with strong heterogeneity. Therefore they are typically low porosity and low permeability reservoirs. The He8 Member reservoirs are evaluated and classified comprehensively. They overall take type Ⅱ and Ⅲ reservoirs as dominated. The reservoir properties of type Ⅱ are relatively better, as favorable reservoirs in the study area.

关 键 词：苏里格气田SN区块 盒8段 储层特征 储层评价 有利储层 

分 类 号：P618.130.2[天文地球—矿床学]