西北地区煤层气藏形成条件剖析

On the formation conditions of coalbed methane pool in northwest China

从煤层发育程度、煤相、煤显微组成、煤级、煤变质作用、构造作用、围岩圈闭、地层压力以及水文地质条件等方面对西北地区侏罗系及石炭 -二叠系煤层气藏形成条件进行了详细剖析。研究结果表明 ,西北侏罗系及石炭 -二叠系在上述条件具备时能够形成煤层气藏。

The formation conditions for coalbed methane pool of Jurassic and Carboniferous-Permian in northwest China have been detailedly analyzed by way of coalbed thickness, coal facies, macerals, rank, metamorphism, tectonism, country rocks, stratigraphic pressure and hydraulics. The study results indicate the Jurassic and Carboniferous-Permian coals in NW China are favorable for the formation of coalbed methane pool.