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煤层含气性是煤层气成藏的一个基本要素,是煤层气勘探开发决策的重要依据之一。煤层气的富集是生成、储集、封盖保存等方面条件及其动态发展过程的有力配置,是各种地质动力学条件耦合作用的结果。在阐述我国煤储层含气性区域分布规律的基础上,从热动力条件、构造动力条件、沉积动力条件及地下水动力条件4个方面总结了前人关于地质动力学条件控气作用的研究成果,认为目前研究中在一定程度上存在片面性、单一性等问题,指出全面耦合分析动力学条件是煤层气成藏作用研究的一个重要发展方向。
Coalbed gas content is a basic element of CBM reservoir formation and one of the important bases for CBM exploration and development decision-making. The enrichment of CBM is a powerful configuration of conditions for the formation, storage and preservation of the cap and its dynamic development process, and is the result of coupling of various geological dynamic conditions. Based on the study of regional distribution law of gas reservoirs in coal reservoirs in China, the research results of previous studies on the role of gas control in geological dynamics are summarized from the aspects of thermodynamic conditions, structural dynamic conditions, sedimentary dynamic conditions and groundwater dynamic conditions It is considered that there is a one-sidedness and unity in the current research. It is pointed out that the comprehensive coupling analysis of kinetic conditions is an important development direction of CBM accumulation.