摘要
煤即可作为煤层气的生烃母质，也可作为其储集层，煤中显微组分直接决定了煤层气中气体成分即其相对含量，同时也影响到煤生烃的阶段性，这都很大程度上决定了煤层最终的生烃能力；同时煤中显微组分的类型和相对含量对煤的裂隙和对煤层气的吸附强弱有很大的影响，并且也会导致煤层气中伴生气体有害的气体成分，影响煤层气的工业利用。因此，基于煤岩学的煤的显微组分的研究对于煤层气的勘探、开发和利用具有极其重要的意义。本文将主要从煤岩学的研究内容入手，探究煤的主要显微组分特征及其生烃差异和煤显微组分对产烃能力的影响，为煤层气的资源预测提供基本的理论指导。
The coal is the bio.precursors of CBM,but also as its reservoir.Macerals of coal di- rectly determine the gas composition in coalbed methane, and also affect the stage of coal hydrocar- bon generation,which largely determines the final hydrocarbon generation of seam.The type and the relative content of the coal have great influence on adsorption strength of the coal fracture or coaibed macerals,and can lead to harmful gas asSOCiated in coal bed methane ,impact the industrial utiliza- tion of coalbed methane.Therefore,reaserchs on coal macerals based~ on coal petrology has great significance for the exploration, development and utilization of coalbed methane.This paper will start from the research content of coal petrology to explore the impact of hydrocarbon production capacity on main maceral characteristics of coal,hydrocarbon generation differences of coal and macerals. Then provide basic theoretical guidance for the coalbed methane resource projections
