Aiming at the geographical characteristics of China' s coalbed methane (CBM) fields and the problems of CBM surface low-pressure gathering, this work proposes a new CBM surface gathering approch suitable for the current situation of China, which combines both the centralized mode and the distributed mode. We made a joint research and achieved a great technological breakthrough on key technical and scientific issues within the CBM low-pressure gathering system, especially particularly focusing on low-pressure gas gathering technology, skid-mounted liquefaction equipment development, produced-water treatment, environmental protection technologies, and automated data collection and network based on management for CBM production and gathering system. It has formed a complete CBM surface gathering and monitoring process technology adapting to the features of China' s CBM industry, and developed a series of low-cost, safe, economic and practical production equipment and commissioning systems, and all innovation results have been applied in the China' s national CBM development testbed project.%针对我国煤层气田地域特点和煤层气地面低压集输存在的问题,通过实施国家科技重大专项项目,研究提出了集中式与分散式相结合的我国煤层气田地面集输模式,对煤层气田地面集输系统的低压集输工艺、撬装式液化设备、产出水处理与环境保护技术、集输系统自动数据采集和网络化管理等关键技术及科学问题进行了联合攻关,获得了重大技术突破,初步形成了适应我国煤层气产业化特点的地面集输工艺与监测技术体系,研发了一系列低成本、生产安全、经济实用的重要装备和试运行系统,并依托国家煤层气开发示范工程基地进行了实际应用.
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