利用CO2-ECBM技术在沁水盆地开采煤层气和埋藏CO2的潜力  

Analysis on the potential of the carbon dioxide-enhanced coalbed methane (CO_2-ECBM) recovery in the Qinshui basin

作　　者：王烽[1,2] 汤达祯[1] 刘洪林[2] 刘玲[1] 李贵中[2] 王勃[2] 

机构地区：[1]中国地质大学(北京)能源学院 [2]中国石油勘探开发研究院廊坊分院

出　　处：《天然气工业》2009年第4期117-120,共4页Natural Gas Industry

基　　金：国家自然科学重点基金项目(编号:40730422);国家重点基础研究发展计划(973计划)项目(编号:2009CB219604)

摘　　要：利用CO2-ECBM技术在深部煤层进行CO2埋藏不仅对减缓全球气候变暖具有重大意义,而且能够促进煤层气增产,是CO2减排最有效方式之一。沁水盆地为一NNE复向斜构造,其边缘地区由于断裂发育、强水动力条件和煤矿的开采,不利于CO2埋藏。盆地中心区稳定的构造环境、弱水动力条件及良好的区域性盖层为CO2埋藏提供了很好的保存条件。依据前人关于CO2/CH4等温吸附特性相关实验参数,初步评价了CO2-ECBM技术在沁水盆地开采煤层气和埋藏CO2的潜力。结果表明:CO2-ECBM技术可使沁水盆地煤层气可采量增加1.04×1012m3,埋藏CO2量可达47.7×108t。The geological storage of CO2 in deep coal seams by use of the CO2 sequestration and enhanced coalbed methane (CO2-ECBM) technology, which is an effective means to reduce the release of CO2 into the atmosphere, will not only help slow down global warming but also stimulate the increase of the recovery ratio of coalbed methane. The Qinshui basin presents NEE synclinoria structure, the marginal area of which has disadvantages for CO2 storage because of well-developed faults and fractures, coal mining and a strong hydrodynamic condition; while the centre of which provides good advantages for CO2 storage due to its stable structure, favorable regional caprocks and weak hydrodynamic condition. According to the related laboratory parameters of CO2/CH4 adsorption isotherm collected by the predecessors, this paper preliminarily analyzed on the potential of CO2-ECBM in the Qinshui basin. The result from this analysis shows that this CO2-ECBM recovery will possibly help increase the recovery ratio of coalbed methane up to 1.04 tcm and the quantity of CO2 storage up to 4.77 billion tons.

关 键 词：沁水盆地 CO2-ECBM 温室气体 煤层气 采收率 CO2/CH4置换比 

分 类 号：P618.11[天文地球—矿床学] TQ116.2[天文地球—地质学]