第44卷第5期 2017年10月
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
李志恒，倪小明，李患诚.泌中南正断层附近煤储层压力分事特征研究[J].矿业安全与环保,2017,44(5)；21-24. 文章编号：10084495(2017)05002104
Vol. 44 No. 5 Oct.2017
沁中南正断层附近煤储层压力分布特征研究
李志恒”，倪小明"2，李忠诚”
（1.河南理工大学能源科学与工程学院，河南焦作454000：2.中原经济区煤层（页岩）气河南省协同创新中心，
河南焦作454000；3.中联煤层气有限责任公司，北京100011）
摘要：查明断层附近煤储层压力分布特征能为煤层气井位布置提供重要依据。以沁水盆地中部棉庄南区块典型正断层为研究对象，采用煤层气井排采动液面计算储层压力的方法，得出正断层附近煤储层压力分布特征。采用测并和实验室渗透率一排驱压力测试法，分析了断层附近围岩封盖性和煤层的煤体结构对储层压力变化的影响。研究结果表明：正断层附近700m内，煤储层压力随与断层距高的增加呈指数型增加；超过700m范围，储层压力受断层的影响较小。在断层影响范国内，距断层不同位置的煤体结构变化大是引起储层压力变化大的主控因素。该研究成果可为正断层附近煤层气井的布置提供参考
关键词：正断层；储层压力；渗透率；煤体结构；煤层气井
中图分类号：TD163
文献标志码：A
网络出版时间：201710-0916：15
网络出版地址：http://kns.cnki.net/kcms/detail/50.1062.TD.20171009.1615.012.html
Study on Distribution Characteristics of Coal Reservoir Pressure near Normal
FaultinCentralShizhuangSouthBlockofQinshuiBasin
LI Zhiheng, NI Xiaoming, LI Zhongcheng
(I. School of Energy Science and Engineering, Henan Polytechnic Unirersity, Jiaozuo 454000, China;
2. Collaboratize Innouation Center of Coalbed Methane and Shale Gas for Gentral Plains Economic Region of Henan Prorince,
Jiaozo 454000, China; 3. China United Goalbed Methane Co, ,Lid. ,Beijing 10001J , China)
Abstract : To find out the distribution characteristics of coal reservoir pressure near the fault can provide an important basis for the CBM well layoutt. In this paper the typical normal faults in the central Shizhuang south block of Qinshui Basin were
taken as the research objec distribution characteristics pemeabilitydisplace
emer
surrounding rock near the faul
CBM draina
the coal reservoir pressure in the
distance; over the 700 m range, the reservoir pressure
calculate
the
ervoir pressure, and the Through the logging and sealing property of the The results showed that
with the increase of the fault
exponentially
affected by the fault. In the influence range of the fault, the
main controlling faclors for the change of the reservoir pressure were the great change of the coal bodies in different distance to the fault. The research results can provide reference for the CBM well layout near the normal fault.
Keywords : normal fault; coal reservoir pressure; permeability ; coal structure; CBM well
煤储层压力是表征储层内部能量大小的重要参收稿日期：2016-11-16;2017-04-13修订
基金项目：河南省高校科技创新人才支持计划项目(15HASTTTO50）；河南省高校科技创新团队支持计划项目(14IRTSTHN002)
作者简介：李志恒(1991一)，男，硕士研究生，主要从事煤层气地质方面的研究工作。E-mail:li_zh1991@163.com 万方数据
数之一，其大小对煤层气井产气量具有重要影响国内外研究者在煤储层压力方面进行了卓有成效的研究。试并测试、排采动液面计算等方法是获取储层压力的直接方法(1-6)。一些研究者通过煤层形成后的埋藏史、含气量变化结合吸附势理论，构建相应的数理模型，对储层压力进行了预测[7-9]。研究者根据煤层围岩的封闭性、地下水动力条件、构造运动作
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