煤层气水平井开发技术现状及发展趋势

煤层气是一种非常规天然气资源，传统的煤层气开采方式为地面直井排水降压开采，但这种方式开采煤层气单井产量低、经济效益比较差。目前针对这种问题煤层气常用的增产措施为水平井技术。煤层气水平井是一种成本不是很高但增产效果非常好的技术，已经越来越多的应用于煤层气的开采。文中主要介绍了煤层气羽状分支水平井技术现状和发展趋势，通过国内外技术煤层气水平井技术的介绍，得出煤层气水平井技术是一种适合中国煤层气开发的关键技术，必须在充分了解煤储层地质特性的基础上应用水平井。

Status of Coalbed Methane Horizontal Well Technology and Trend of Development

Coalbed methane(CBM) is a kind of unconventional natural gas resources.Traditional way for CBM development is surface(vertical wells)drainage buck,but this method may cause low production of single well and the economic return relatively poor.At present,one of the countermeasures to stimulate CBM production is horizontal well technology.CBM horizontal well technology is a high yield technology with low cost,which has been increasingly used in CBM development.This paper mainly presents the current status and development trend of the Multi-lateral horizontal well technology.Through the introduction to CBM horizontal well technology at home and abroad,a conclusion can be conducted that CBM horizontal well technology is an important technology suitable to be applied in China's CBM development when it is used on the basis of fully understanding of the geological characteristics of coal reservoirs.