位于鄂尔多斯盆地东南缘的延川南煤层气田从勘探发现到效益开发经历了近10年，其产能建设和开发上产的整个历程，在我国深部煤层气领域的勘探开发探索中具有很强的代表性和示范作用，气田突破了800 m以浅的经济开发极限深度，实现了规模效益开发。基于对延川南煤层气田的地质特征、成藏规律以及开发生产动态的综合分析，研究了其富集高产要素以及勘探开发技术。大量实践证实了研究区煤层气藏具有三大地质特征：①埋深大、煤阶高、含气量高，资源条件较为有利；②孔隙度低、渗透率低、微孔发育有利于吸附，但孔隙连通性较差不利于产出；③储层压力系数低，开发难度较大。在深入分析深部煤层气地质成果的基础上，总结提出了“沉积控煤、构造控藏、水动力控气、地应力控缝、物性控产”的延川南深部煤层气田成藏富集高产的五要素协同控制理论，形成了适用于深部煤层气勘探开发的四大关键技术体系：①构建了以“串枝化”、“井工厂”为特色的集约化大平台钻完井技术；②形成了适用于深煤层开发的有效增产改造技术；③制定了基于解吸理论的智能化精细排采控制技术；④集成了适宜于复杂地貌的地面集输以及气田数字化技术，为同类型的深部煤层气的产能建设和经济有效开发提供了技术支撑。

South Yanchuan Coalbed Methane Field in the southeastern margin of the Ordos Basin has experienced nearly 10 years from exploration and discovery to benefit development；the whole process of capacity building and development and production has a strong representative and demonstration role in the exploration and development of deep coalbed methane in China. The gas field has broken the 800-meter development limit, and it has greatly realized the scale benefit development. Based on the comprehensive analysis of the geological characteristics and the enrichment law of the South Yanchuan coalbed methane field located in the southeastern margin of the Ordos Basin, the paper studied its enrichment and high production factors as well as exploration and development technologies. Abundant exploration and development practice has proved that CBM reservoirs in the study area have three main characteristics: ①deep burial, high coal rank, high gas content and favorable resource conditions; ②low porosity, low permeability and micro-pore development is conducive to adsorption, but poor pore connectivity is not conducive to production; ③low reservoir pressure coefficient makes development difficult.On the basis of in-depth analysis of the geological achievements of deep CBM geology, a five-factor synergistic control theory of deep CBM reservoir formation and high production is put forward, which includes sedimentary control, structural control, hydrodynamic control, insitu stress control and permeability control, and physical property control. Four key technical systems suitable for deep CBM exploration and development were formed:①the intensive large platform drilling and completion technology characterized by “series branching” and “well factory”;②an effective production and transformation technology for deep coal seam development;③an intelligent drainage and production control technology based on the desorption theory;④ground gathering and digital gas field technology, which provides technical support for the economic and effective development of the same type of deep seam methane productivity construction.