煤层气开发技术综述

Summary of CBM Exploitation Technology

目前国内外煤层气开发技术主要包括钻井技术(定向羽状分支水平井钻井技术和空气欠平衡钻井技术)、完井技术(裸眼洞穴完井和套管射孔压裂完井)以及排采技术(有杆抽油泵技术、螺杆泵技术和潜油电泵技术)。在国内煤层气研究开发中仍存在如基础研究薄弱,没有形成从钻井、完井、生产到集输一体化的煤层气生产规模,中央企业和地方企业之间的资料和技术不共享,设备利用率低等诸多问题。定向羽状水平井、空气钻井技术、洞穴完井技术和压裂技术是当前煤层气开发技术的发展趋势,但必须加以改进使之成为适宜中国煤层气储层条件的技术。

At present,CBM exploitation technologies are mainly included drilling technology（directional pinnate branch horizontal well drilling and air underbalanced drilling technologies）,well completion technology（open hole cave well completion and casing perforation fracturing well completion technologies）,drainage and recovery technology（sucker rod pump,screw pump and electric submersible pump technologies） both in home and abroad.In domestic CBM research and exploitation,still have many problems including weak basic research,integrated CBM production scale including drilling,well completion,yield,gathering and transportation has not yet been formed,information and technology can not be shared between central and local enterprises,low equipment utilization rate etc.Directional pinnate branch horizontal well,air drilling,cave well completion and fracturing technologies are development trend of CBM exploitation technology,but should be improved to accord with Chinese CBM reservoir terms and conditions.