地学前缘 ›› 2016, Vol. 23 ›› Issue (3): 10-16.DOI: 10.13745/j.esf.2016.03.002

• “煤层气地质与工程”特约栏目 • 上一篇    下一篇

深部煤层气储层地质研究进展

李松，汤达祯，许浩，陶树   

  1. 煤层气国家工程中心煤储层实验室; 中国地质大学(北京) 能源学院, 北京 100083
  • 收稿日期:2015-06-23 修回日期:2014-11-30 出版日期:2016-05-15 发布日期:2016-05-15
  • 通讯作者: 汤达祯(1957—)，男，博士，教授，煤油气地质与工程专业。
  • 作者简介:李松(1985—)，男，博士，讲师，能源地质与工程专业。E-mail:lisong@cugb.edu.cn
  • 基金资助:

    国家自然科学基金项目(41272175，41530314)；国家科技重大专项(2011ZX05034)；中澳天然气技术伙伴关系基金研究生晋级奖学金；中央高校基本科研业务费专项资金项目（2652015321）

Progress in geological researches on the deep coalbed methane reservoirs

LI Song,TANG Dazhen,XU Hao,TAO Shu   

  1. Coal Reservoir Laboratory of National Engineering Research Center of Coalbed Methane Development and Utilization; School of Energy Geology, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2015-06-23 Revised:2014-11-30 Online:2016-05-15 Published:2016-05-15

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摘要：

深部煤层气资源潜力巨大，将是非常规天然气勘探开发的一个新领域。美国和加拿大部分地区已经成功实现了深部煤层气开发的商业化水平，而中国由于受当前开发技术和经济条件的限制，至今尚未形成规模性的开采。基于对近年来有代表性的学术论著的研究分析，从煤岩孔裂隙结构、吸附解吸性质、气体在煤层中的扩散渗流过程、煤储层的可改造特征等4个方面总结了深部煤层气储层物性的理论研究进展。研究指出深部煤储层处在高温、高压和高地应力的复杂地质环境中，煤储层储渗演化、煤层气吸附解吸扩散渗流平衡关系、煤岩应力应变行为等趋于复杂，开展特殊地质条件下的深部煤储层物性演化机理的研究，对我国深部煤层气资源的勘探开发具有重要的理论和现实意义。

关键词: 深部煤层气, 储层, 孔裂隙结构, 力学性质, 含气量, 渗透性

Abstract:

The potential of deep coalbed methane (CBM) resource is huge, which makes it a new field in the unconventional natural gas exploration and development. The U.S. and Canada have successfully achieved the commercial development of deep CBM in some area, while exploration and development of deep CBM in China are still limited due to technological limitations. Based on the study of representative publications in recent years, this paper wholly summarized the progress in researches on physical properties of deep CBM reservoirs from the following four aspects: pore and fracture structures, adsorption and desorption characteristics, diffusion and seepage processes of gas in coal reservoir, and the transformability of coal reservoir. Since deep coal reservoirs are located in complex geological environments with high temperature, high pressure and high stress; thus, the permeability evolution of coal reservoir, the equilibrium relationship among CBM adsorption, desorption, diffusion and seepage, as well as the stress and strain behavior of coal tend to be more complex. Therefore, the studies of the evolution mechanism of deep coal reservoir properties under special geological conditions have theoretical and practical significance for the exploration and development of deep CBM in China.

Key words: deep CBM, reservoir, pore and fracture structure, mechanical property, gas content, permeability

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