沁水盆地南部注二氧化碳提高煤层气采收率微型先导性试验研究  

Micro-pilot test for enhanced coalbed methane recovery by injecting carbon dioxide in south part of Qinshui Basin

作　　者：叶建平[1] 冯三利[1] 范志强[1] 王国强[1] William D.Gunter Sam Wong John R.Robinson 

机构地区：[1]中联煤层气有限责任公司,北京100011 [2]Alberta Research Council

出　　处：《石油学报》2007年第4期77-80,共4页Acta Petrolei Sinica

基　　金：国家"十五"重大科技攻关项目(2004BA616A-08-03)"注CO2提高煤层气采收率技术研究";中国加拿大合作项目(协议编号:7019346)"中国煤层气技术开发/CO2埋藏"部分成果

摘　　要：在沁水盆地南部TL-003井进行了单井注入CO2提高煤层气采收率试验。采用间歇式注入方式,共向3号煤层注入192.8t液态CO2。生产和储层模拟评价结果表明,大部分CO2被煤层吸附,能显著提高单井产量和采收率。多井试验模拟显示,在沁南无烟煤煤层中注入CO2,能显著地提高煤层气采收率,同时实现了埋藏CO2的目标。A new kind of technology for using CO2 injection was proposed to enhance coalbed methane （CBM） recovery and store CO2 in the non-mineable deep coal seams. The micro-pilot test for CO2 injection was performed in TL-003 Well of the southern Qinshui Basin. In the micro-pilot test, 192.8 tons of liquefied CO2 were intermittently injected into No. 3 coal seam. A set of high-quality data were obtained, including the injection rates, surface and bottom-hole pressures and temperatures during injecting CO2 period, the bottom-hole pressures and temperatures during shut-in period, and the bottom-hole pressures and temperatures, gas and water production rates, and gas composition during production period. The history match of the dataset from the micro-pilot test was successful with the CMG simulator. The multi-well simulation and numerical prediction indicated that CO2 was almost adsorbed into No. 3 coal seam, and the coalbed methane recovery increased markedly, while CO2 could be stored in No. 3 coal seam for a long term in south part of Qinshui Basin.

关 键 词：沁水盆地 煤层气 二氧化碳 注入方式 提高采收率 先导试验 

分 类 号：TE357[石油与天然气工程—油气田开发工程]