低渗砂岩气藏酸化研究  

Research for the Acidizing of Low Permeability Gas Reservoirs

作　　者：杨其彬[1,2] 隋文[2] 鲜青华 陈磊[2] 陈培胜[2] 张秀芹[2] 冯绍云 

机构地区：[1]西北大学地质学系,710069 [2]胜利油田采油院,257000 [3]河口采油厂,257300

出　　处：《内蒙古石油化工》2009年第24期155-157,共3页Inner Mongolia Petrochemical Industry

摘　　要：低孔低渗致密岩性气藏孔隙喉道小,极易受到污染,导致储层渗流条件差、气井产量低,开展低渗透气藏酸化是提高气井产量和气藏储量动用程度的有效手段和重要途径。本文针对鄂尔多斯盆地盒8段储层基质酸化的需要,从影响气藏酸化的主要因素入手,应用双51井盒8层岩心,结合岩心的微观孔喉变化、扫描电镜实验,对酸化前后的储层岩心进行了系统分析,结果表明,岩性是酸化工作液的主要依据,酸溶物的含量决定了储层物性的改善程度。Being tiny pore strcture for tight gas reservoir,it is easy to be polluted. This leads to permeability becoming bad and output decreasing. The aciding is one of the important approach to improve the produce and producing reserves. To meet the aciding need for the He 8 in Ordos Basin,this paper develops the system analysis for the rock and aeiding rock by means of microstructure and the SEM using the rock core for Shuang 51 Well. The result shows that lithology is the main criteria for aciding fluid optimization and the degree of improvement is due to the dissolve capability.

关 键 词：低渗气藏 基质酸化 微观结构 扫描电镜 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程] TE357.14