沁水盆地煤层储集性能

单秀琴

doi:10.11743/ogg19980411

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沁水盆地煤层储集性能
RESERVOIR CHARACTERISTICS OF COAL FORMATIONS IN QINSHUI BASIN
1998年19卷第4期页码：321-325
网络首发：1998-12-25，

纸质出版：1998
DOI： 10.11743/ogg19980411
稿件说明：

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单秀琴. 沁水盆地煤层储集性能[J]. 石油与天然气地质, 1998,19(4):321-325. DOI： 10.11743/ogg19980411.

Shan Xiuqin. RESERVOIR CHARACTERISTICS OF COAL FORMATIONS IN QINSHUI BASIN[J]. 1998, 19(4): 321-325. DOI： 10.11743/ogg19980411.

摘要

沁水盆地煤层孔隙分为5种类型

孔渗性较高

煤层吸附回线以密闭型为主

毛管压力曲线主要为裂隙孔隙型

孔隙分布以大孔为主

孔容及孔比表面积大

具中等吸附能力。因而该地区煤层储集性能较好

煤层气易于开采。

Abstract

Coal formation pores such as cleats and intergranular pores could be divided into five types in this area.The adsorption and desorption curves are mainly closed;the coalbed capillary pressure curves are principally fissure-pore type;large pores are widely distributed;the pore volume and specific area are both large;and the adsorption property is in middle-class.Therefore

the performance of coalbed reservoirs is good and coalbed methane could be easily developed in this area.