阜新盆地刘家区煤储层综合分析

在对阜新盆地刘家区构造演化及构造特征、煤层发育特征、煤的化学成分及排采试验资料分析的基础上,对研究区煤层气含量、煤的吸附性、煤层渗透率、煤储层压力、临界解吸压力、煤体结构、煤层气产出特点进行了综合研究。认为研究区煤层分布广、厚度大、丰度高,煤的吸附能力强;而且埋深与辉绿岩侵入体是控制煤层气含量的主要因素,成煤后期构造运动是影响煤储层渗透率的关键因素。煤层气开发有利区应在向斜翼部和岩墙、岩床附近煤变质程度高的区域。

Multidisciplinary Analysis of Coalbed Methane Reservoir in Liujia Mining Area, Fuxin Basin

On the basis of structural evolution and structural features,coalbed development features,chemical composition of coal and discharge /recovery testing data analyses of the Liujia district,Fuxin basin,a multidisciplinary analysis have made for target area coalbed methane content ,adsorptivity of coal,coalbed permeability,coal reservoir pressure,critical desorption pressure,coal texture,coalbed methane occurrence condition.The author regards:coal seams in the target area have charac-teristics of vast distribution,thick,high abundance,high adsorptive capacity;reservoir depth and diabase intrusive are main factors to control methane content ;post coal-forming tectogenesis is a key factor to affect reservoir permeability.Favorable methane exploitation area should be in both limbs of a syncline and next to dykes and sills where coal is highly metamor-phosed.