通延川南地区煤层气资源丰富,以其含气量高、地质构造简单、埋藏深度适中等有利条件引起了国内外煤层气地质学家的广泛关注,成为中国煤层气勘探活动最活跃的热点地区之一。该文从水文地质条件、构造条件、煤层埋深和围岩封闭条件4个方面探讨区内煤层气控气因素。结果表明水文地质条件和构造条件是延川南地区煤层气富集的主控因素,为该地区煤层气资源的进一步勘探开发提供有力支撑。 Due to its rich gas resources, simple geological structure and moderate depth of burial, favorable geological conditions have led to extensive attention of CBM geologists both at home and abroad, making it the most active hot area for CBM exploration in China one. This paper discusses the CBM controlling factors in the area from four aspects of hydrogeological conditions, tectonic conditions, the depth of coal seams and the confinement of surrounding rocks. The results show that hydrogeological conditions and tectonic conditions are the main controlling factors of CBM enrichment in Yanchuannan area, which provide strong support for the further exploration and development of CBM resources in this area.