煤层气

构造对高煤级煤储层渗透率的系统控制效应—以沁水盆地为例

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  • (郑州大学工程力学系,河南 郑州 450001)
陈金刚(1973-),男,河南邓州人,博士,副教授 ,硕士生导师,主要从事煤层气地质方面的研究.

收稿日期: 2006-09-15

  修回日期: 2006-12-20

  网络出版日期: 2008-06-20

基金资助

河南省高校青年骨干教师基金项目;国家“973”计划煤层气项目(编号:2002CB211704)联合资助.

SYSTEMATIC CONTROL EFFECT OF STRUCTURES ON PERMEABILITY OF HIGH COAL RANK RESERVOIRS

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  • (Zhengzhou University, Zhengzhou 450002, China)

Received date: 2006-09-15

  Revised date: 2006-12-20

  Online published: 2008-06-20

摘要

以我国目前极具煤层气勘探开发价值的高煤级煤盆地——沁水盆地为例,并基于丰富的煤储层试井渗透率资料和煤层气赋存的构造背景,采用定性分析和定量分析相结合的方法,探讨了构造对高煤级煤储层渗透率系统控制效应。研究结果表明:构造样式对煤储层渗透率起着重要的控制作用;中等构造曲率有利于煤储层渗透率的提高;煤储层渗透率随现代构造应力场主应力差的增大呈指数形式急剧增加,但当埋藏深度大于临界深度时,这种控制作用越来越弱,而垂向应力的控制作用将占据主导地位.


本文引用格式

陈金刚, 张景飞 . 构造对高煤级煤储层渗透率的系统控制效应—以沁水盆地为例[J]. 天然气地球科学, 2007 , 18(1) : 134 -136 . DOI: 10.11764/j.issn.1672-1926.2007.01.134

Abstract

Qinshui Basin is a high coal rank basin which has a great potential of gas in China. Based on the abound well-testing permeability data, system fracture observation results and its tectonic setting, the control effect of structural setting on high coal rank reservoirs is discussed using the composite methods of qualitative and quantitative analyses. Some achievements and recoveries are made as follows: The tectonic styles play an important role in controlling the permeability of coal reservoirs. The relation between main curvature and permeability showsthat the tectonic curvature, ranging from 0.05 to 0.2, is favorable for enhancing permeability. The permeability of high rank coal increases exponentially withthe increase of the main stress difference of modern tectonic stress field, however, with the increase of burial depth, the control effect of modern tectonic stress field on the permeability of coal reservoirs below the critical burial depth will become weaker and weaker, whereas the control effect of vertical stress will increase.

 

参考文献

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