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中国无烟煤分布区的特点是聚煤期后的地质时代构造活动强烈，使煤层原始结构遭受严重破坏，因此含气量虽高，但渗透率低、可解吸气量低。根据对中国无烟煤区煤层气勘探现状和存在主要问题的分析，认为这类地区煤层气勘探中选区不当和增产措施不配套，是勘探未获得实质性进展的主要原因。指出次生裂缝发育带是高渗透性煤层分布带，是有望获得突破的有利勘探选区，套管射孔压裂是有效的增产措施。图２表２参４（梁大新摘）
The anthracite distribution in China is characterized by strong tectonic activity in the geological age after the coal-accumulating period and serious damage to the original structure of the coal seam. Therefore, the gas content is high but the permeability is low and the amount of desorbable gas is low. Based on the analysis of CBM exploration status and major problems in China’s anthracite, it is considered that the improper selection of CBM and stimulation measures in such CBM exploration are the main reasons for the lack of substantial progress in exploration. It is pointed out that the secondary fracture development zone is a highly permeable coal seam distribution zone and is a favorable prospecting area that is expected to have a breakthrough. Casing perforation and fracturing is an effective stimulation measure. Figure 2 Table 2 Reference 4 (Liang Daxin Abstract)