作　　者： ; ; ; ; ;

机构地区： 中国矿业大学北京

出　　处： 《天然气地球科学》 2011年第2期352-360,共9页

摘　　要： 通过对大宁—吉县地区煤岩的生储气能力、煤储层渗透性、煤层气保存条件等煤层气成藏条件的分析,认为研究区发育承压水和断层封堵复合型煤层气藏,煤层气富集规律主要受沉积环境、煤储层渗透性、现今地应力以及水动力环境等的影响。钻探资料证实,河间湾沼泽相、构造宽缓部位以及地应力低值区为煤层气最有利富集区,是该区中煤阶煤层气勘探最有利的地区。 This paper studied the key elements of CBM pool that affected by coal generating and storing capacity,permeability of coal seals and preservation of coalbed methane in Daning-Jixian area.Results showed that the CBM pool of this area was sealed off by tectonic and artesian hydrodynamic force.Deposition environment,coalbed permeability,current terrestrial stress and hydrodynamic environment affected the coalbed methane enrichment and high production.It was proved by exploration that high production area was in marsh facies,broad structural and low terrestrial stress area,which was one of CBM exploration optimum in mid-rank coal in China.

关 键 词： 大宁 吉县地区 煤层气 成藏条件 气藏类型 富集规律

领　　域： [石油与天然气工程]