Experimental study of water effects on gas desorption during highpressure water injection  

作　　者：ZHANG Guo-hua LIU Xian-xin BI Ye-wu PU Wen-long 

机构地区：[1]Safety Engineering College, Heilongliang University of Science and Technology, Harbin 150027, China

出　　处：《Journal of Coal Science & Engineering(China)》2011年第4期408-413,共6页煤炭学报（英文版）

摘　　要：For the question of applying high-pressure water injection to increase gas extraction efficiency by increasing the permeability of water to drive gas action, an independently designed gas desorption experimental measuring device was used under the condition of external solution invasion. The law of water effect on gas desorption was obtained after water invasion through experiment for the first time. The results show that water＇s later invasion not only can make the quantity of gas dcsorp- tion greatly reduced, but also can make gas desorption end early. Therefore, when evaluating the applications of high-pressure water injection to increase gas extraction efficiency, we should take water damaging effects on gas desorption into account.

关 键 词：gas desorption gas extraction high pressure water injection later invasion 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程] TQ116[化学工程—无机化工]