中国煤层气资源潜力及其勘探方向

煤层气是赋存于煤层中的一种非常规天然气资源，我国煤炭资源丰富，煤层气资源也十分丰富。通过对煤层的吨煤含气量、含气饱和度、含气质量（甲烷浓度）、含气强度（资源丰度）这4项含气性参数的研究，查明了我国华北、华南、西北和东北聚气大区煤层的含气性差异及控制因素；并依据新的评价原则，分三个级别（评价区块、聚气带和聚气大区）对我国煤层气资源量进行了新一轮评价，预测深度浅于2000m的煤层气总资源量为22.5×10

Coal bed methane resource and its exploration direction in China

Coal bed methane is an unconventional natural gas trapped in coal bed. Our country has rich coal and rich coal bed methane. In this paper, the author found out the difference in gas content and its controlling factor through four parameters, such as gas content per ton of coal, gas saturation, gas concentration and gas abundance. New calculation of resource shows that in China coal bed methane shallower than 2000m is about 22.5×1012m3, and the available resource of coal bed methane shallower than 1500m is about 7.29×1012m3, accounting for 32.4% of the total resources of this kind. In the Qinshui basin, Ordos basin and Liupanshui basin, there are many favorable sections for coal bed methane exploration because of high gas content, high saturation, high gas quality and high abundance. They are the most potential areas for coal bed methane exploration.