school of Energy Resources,China University of Geosciences(Beijing)Coal Reservoir Laboratory of National Engineering Research Center of Coalbed Methane Development & Utilization

为给煤层气的高效开发提供理论参考,对煤层气开发地质理论和基于煤层气产出的煤岩学控制机理研究进展及存在的问题进行了系统分析,指出由于煤储层煤岩组成及本构关系差异显著,当前煤岩学主控的煤储层储渗空间特征及其与产能耦合关系研究远不能满足煤层气开发需求,表现为:对煤储层非均质发育特征及其开发动态效应认识不够;储层改造及煤层气排采的针对性不强;生产过程中无法有效地从地质角度规避各种层内(间)矛盾。阐明煤岩制约下的储层有效孔渗空间发育特征、层内(间)本构关系变化及煤层气开发过程储层物性响应成为亟待探索的科学问题。通过研究形成适配的层内—层间、宏观—微观、初始—动态煤岩描述理论和方法将成为促进煤层气开发地质理论发展的重要方向。

in order to provide the theoreical references for high eficient calbed methane( CBM) exploration and development.the systematic analysis was made on the curen situation and existing problems of coal petrology control mechanism on CBM producion and CBM development geologcal theory.The paper poined ou tat there were signficant diferences on the petrological comp.stion and constituive relation of coalresevois. So farthe research about the storage- permeable spas characteristics of coal reservoirs and iscoupling relationship with CBM producion which were dominated by coal petrology was far rom reachingthe techmnolog requirements of CBM development.The spec fc perfomance as the following insuificent understanding of the heterogeneity of coal reservoir development characteristics and development dynamic effect ack of perinencefor reservoir reformation and CBMl drainage t could not avoid the various layersi iner contradiction fron the geocgcal aspects during CBM production. Clarifying the storage- permeable spaces characteristics controlled by cal petrogy.the constitivereation varation in intemal finterlayer.and the reservoir physical propertes response in ClM exploring process have become scietifi: problems and are urget to be explored .Tthe adapted dectptivist theory and method of coal petrology in layer-interiayer,macroscopic-microcosmic and inttal- dynamic will be the future research diection

国家科技重大专项资助项目(2011ZX05034-003,2016ZX05042-002)；国家自然科学基金资助项目(41272175)；