高渗透性煤储层分布的构造预测

高渗透性煤储层分布的构造预测

张建博1 2, 秦勇2, 王红岩1, 陈金刚2

1. 中国石油勘探开发研究院廊坊分院，廊坊 065007; 2. 中国矿业大学，徐州 221008

收稿日期:2003-09-20 修回日期:2003-09-20 出版日期:2003-09-20 发布日期:2003-09-20

Predication for the Occurrence of High Permeability Coalbed Gas Reservoirs With Tectonics Analysis

ZHANG Jian-bo1 2, QIN Yong2, WANG Hong-yan1, CHEN Jin-gang2

1. Langfang Branch, China Institute of Oil Exploration and Development, Langfang 065007, China; 2. China University of Mining and Technology, Xuzhou 221008, China

Received:2003-09-20 Revised:2003-09-20 Online:2003-09-20 Published:2003-09-20

摘要/Abstract

摘要： 以我国山西沁水盆地为例，采用现代构造应力场和构造曲率分析相结合的方法，就构造对煤储层高渗透性区发育特征的控制规律及其地质机理进行了研究。结果表明：沁水盆地下二叠统山西组主煤储层试井渗透率与现代构造应力场最大主应力差之间具有指数正相关关系，煤储层构造裂隙在构造主曲率大于O．1×10^4／m的地段可能相对发育；高构造曲率与高最大主应力差相匹配的地段在盆地中-南部呈NNW向展布，是较高渗透性煤储层发育的地带；构造应力实质上是通过对天然裂隙开合程度的控制而对煤储层渗透率施加影响。

Abstract: With the Shan’xi Qinshui Basin as a case，the geological mechanisms of structures controlling the occurrence of coalbed gas reservoirs with high-permeability were studied through a comprehensive analysis of modem tectonic stress field and curvature．The results showed that the testing well permeability of the major lower Permian Shan ’xi Formation coal reservoirs is positively and exponentially correlated to the main maximum stress difference of modem tectonic stress field an d the structural fissures in the coal reservoirs occur mostly in the zones with the structural curvature more than 0.1×10-4 /m．The zones matched high curvature to high main stress difference in the central and southern basin extend in the NNW strike，where the coal reservoir permeability is relatively high．The tectonic stress affects coal reservoir substantially through controlling the open-close degree of the fissures in coal reservoir．

张建博 , 秦勇, 王红岩, 陈金刚. 高渗透性煤储层分布的构造预测[J]. J4.

ZHANG Jian-bo1 2, QIN Yong2, WANG Hong-yan1, CHEN Jin-gang2. Predication for the Occurrence of High Permeability Coalbed Gas Reservoirs With Tectonics Analysis[J]. J4.