鄂尔多斯盆地上古生界致密砂岩气藏储层成岩作用及成岩相——以苏里格气田桃X区块为例  

Diagenesis and diagenetic facies of tight sandstone reservoir of the upper paleozoic in the Ordos Basin ——taking the Tao-X block as an example

作　　者：马志欣[1,2] 朱亚军[1,2] 杜鹏[1,2] 郝骞[1,2] 李浮萍[1,2] 段志强[1,2] 石林辉 李武科[1,2] 赵占良[1,2] 

机构地区：[1]中国石油长庆油田苏里格气田研究中心,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《湖北大学学报（自然科学版）》2015年第6期520-526,共7页Journal of Hubei University：Natural Science

基　　金：国家重大科技专项(2011ZX05015-001);中国石油天然气股份有限公司(2010E-23)联合资助

摘　　要：以苏里格气田桃X区块上古生界二叠系盒8段储层为例,采用铸体薄片鉴定、电镜扫描、阴极发光、镜质体反射率、X线衍射及流体包裹体测温等多种分析测试手段,对储层的成岩作用、成岩序列及孔隙演化进行研究.研究结果表明:造成储层致密的主要原因是成岩期强烈的压实作用、压溶作用及石英、方解石和高岭石的胶结作用,而溶蚀作用对储层次生孔隙形成起到建设性作用;储层成岩作用阶段已达中成岩B亚期,根据控制孔隙演化的主要成岩作用,将储层成岩相划分为6种类型,阐述了各成岩相类型的孔隙演化模式,其中溶蚀-胶结相、高岭石-硅质胶结相为形成储层主要成岩相.By casting thin section,scanning electron microscopy,cathodoluminescence,vitrinitereflectance rate,X-ray diffraction,temperature of fluid inclusions and other analytical testing methods,weanalyzed the diagenesis,pore evolution model and the diagenetic stage of He 8（P1h8）formation reservoir ofthe upper Paleozoic of block Tao-X block in Sulige gas field. The results showed that the strong diageneticcompaction pressure solution and quartz,calcite,and kaolinite cementation combined were the mainformation reason of tight reservoir,and the dissolution played a positive role in the formation of secondaryporosity. In the study area,the diagenesis stage has reached the sub-stage B of diagenesis,according to themain diagenesis of porosity evolution,diagenetic facies could be divided into six types,various types ofdiagenetic facies porosity evolution model was eatablished in this paper.The dissolution- cementation andhalloysite-siliceous cementation faces were the most constructive facies.

关 键 词：苏里格气田 致密砂岩气藏 成岩作用 孔隙演化 成岩相 

分 类 号：P618.13[天文地球—矿床学]