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沁水盆地南部地区已累计投入40口井的勘探工作量，并取得了重大的勘探成果，证实核区为煤层气高渗富集区。从含煤性、含气性、可采性等方面对该区进行了全面分析，得出以下认识：煤层厚度较大，分布稳定；煤变质程度高，煤的吸附能力强，含气量高，含气饱和度也较高；煤体结构、煤岩类型和煤质好，煤层割理较发育，渗透性较好，适合于压裂改造；区域构造稳定，煤系及上覆连续地层保存较好，后期改造、断裂不严重，构造较简单，煤层气赋存和保存条件好；煤层埋藏较浅；水文地质条件比较有利。综合评价该区煤层气具有良好的可采性，可以作为我国第一个煤层气滚动勘探开发区块。

Exploration Result and Geological Analysis of Coal-bed Gas in the South Part of Qinshui Basin

An exploration work load of 40 wells in total has been finished in the south part of Qinshui Basin and a significant result has been obtained,which proves that this region being of high permeability is rich in coal-bed gas.Through overall analyzing the coal reserves,gas potential and recoverability in the region,it is considered that the thickness of coal-beds with a stable distribution is large;the rank of coal metamorphism is high;and the coal is of strong adsorption capacity,high gas content and high gas saturation;coal body structure,coal petrologic type and coal quality are good;the cleats in coal are developed with fair permeability,which is suitable for fracturing;the occurrence and preservation conditions of coal-bed gas are good because of stable tectonics,well preserved coal measures and overlying strata,a weak late deformation,a few fractures and complete structures;coal-beds are shallowly buried;and hydrogeological condition is relatively favourable.According to comprehensive evaluation it is concluded that the coal-bed gas in the region is of good recoverability,therefore it can be taken as the first coal-bed gas rolling exploration and development area in China.