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河北南部地区石炭—二叠系煤层煤种丰富,峰峰、邯郸矿区煤层的宏观煤岩类型以半亮煤和半暗煤为主;显微煤岩类型为微镜煤、微镜惰煤及微暗煤;煤的结构以细、中宽条带状结构为主,在半亮煤和半暗煤中最多;有机显微组分以镜质组最高,一般可占50%～91%,惰质组占10%～35%,壳质组含量一般不超过5%,对煤层气来说,这是比较有利的烃源条件;区内大淑村矿2煤的矿物质含量最低,其煤的吸附能力较其它矿区高;主煤层镜质组最大反射率具有北高南低的分布规律,揭示了煤的生烃强度具有由南向北逐渐增高的趋势。该区煤层气源岩不仅影响煤的生烃能力,还影响着煤层对甲烷的吸附能力和煤层气的开采能力。
The Carboniferous-Permian coal seams are abundant in the southern part of Hebei Province. The macro-types of coal seams in Fengfeng and Handan are dominated by semi-bright coal and semi-dark coal. The types of micro-coal and rock are micromirror coal, The structure of coal is dominated by fine and medium-wide banded structure, and the most is in semi-bright coal and semi-dark coal. The organic micro-components are the highest in vitrinite group, which can generally account for 50% -91% The inertinite group accounts for 10% -35%, and the content of the crust group generally does not exceed 5%. This is a favorable hydrocarbon source condition for CBM; the coal content of Dashu Village Mine in the area is the lowest, The adsorption capacity of coal is higher than that of other mining areas. The maximum reflectivity of the vitrinite in the main coal seam is distributed from north to south, revealing that the hydrocarbon generation intensity of coal tends to increase gradually from south to north. The CBM source rocks in the area not only affect the hydrocarbon generation capacity of coal, but also affect the methane adsorption capacity and CBM production capacity of the coal seam.