压裂液吸附对煤层损害的实验研究及影响因素分析  

Experimental Research on Coal-bed's Damage Induced by Fracturing Fluid Adsorption and the Impacted Factors Analysis

作　　者：陈进[1] 刘蜀知[1] 钟双飞[1] 刘福健[2] 

机构地区：[1]西南石油大学,四川成都610500 [2]中油辽河石油勘探局,辽宁盘锦124010

出　　处：《西部探矿工程》2008年第11期62-64,共3页West-China Exploration Engineering

摘　　要：压裂液对煤储层的伤害机理是目前煤层气井压裂技术的主要研究内容之一。由于煤岩的矿物组成和孔隙结构等多方面的特殊性,在压裂施工过程中压裂液对煤层的伤害不同于其对常规油气藏储层的伤害。相关研究表明:在煤层气井压裂施工过程中,压裂液与煤层接触所造成的渗透率的降低,一般是由煤基质的割理被堵塞及煤基质对压裂液的吸附所造成。重点对辽河油田阜新组煤层由于压裂液的吸附所引起的煤层伤害进行了实验研究,并结合相关理论和实验结果,对压裂液吸附对煤层伤害的影响因素进行了分析。At the moment, the damage mechanism induced by fracturing fluid is the major content in coal-bed gas well fracture technique, Beause of some special characters of the coal bed＇s mineral component and pore structure, the damage which induced by the fracturing fluid is different from the hydrocarbon reservoir. Some relevant research indicated that the contact between the fracturing fluid and the coal layer surface will decrease the permeability of the coal layer during the fracturing process, it is the result of two factors, one is the cleat of the coal base is blocked; another is the coal base＇s absorption to the fracturing fluid. This article mainly focus on the research of Fuxin coal-bed＇s damage induced by the coal base ＇s adsorption to fracturing fluid on Liaohe Oil Field, and analyze the affection factors by the absorption fracturing fluid combined with the experiment data and some relevant theories.

关 键 词：煤层气 压裂液 渗透率 损害 吸附 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]