煤层气基础理论、聚集规律及开采技术方法进展

煤层气以呈吸附状态赋存在煤储集层中而有别于常规天然气,导致煤层气藏的形成机制和开发原理与常规天然气藏截然不同。围绕煤层气基础地质理论、煤层气聚集规律和煤层气勘探技术方法三方面,重点研究煤层气的生成、成藏理论、成藏条件,总结出我国以高煤阶无烟煤煤层气富集成藏为代表的煤层气聚集规律,同时对目标区预测技术和低渗强化开采的工艺技术进行分析,提出开展煤层气生成及储集层非均质性研究、煤层气富集成藏机制分布规律和高效勘探开发技术机理研究是解决制约我国煤层气工业取得突破的有效途径。参21

Progress of basic theory and accumulation law and development technology of coal-bed methane

Coal bed methane(CBM) is different from conventional natural gas as it exists in coal reservoir in adsorption status, which leads to the great difference in formation mechanism and development theory. Focused on basic geology theory, accumulation law and exploration technology of CBM, the study of the CBM formation, theory and condition of reservoir formation was carried out to conclude the accumulation law represented by the enrichment of high coal rank anthracite. The prediction technology of target areas and enhanced recovery technology of low permeability reservoir are presented. The researches on CBM formation, reservoir heterogeneity, hydrocarbon accumulation and reservoir formation mechanism, and effective exploration and development technology are effective way to achieve breakthrough of national CBM industry.