煤层气井气体钻井技术发展现状与展望

煤层气储层的特殊性对煤层气钻井时的储层保护提出了更高的要求。用气体钻井方式开采煤层气是一种有效的保护储层的手段，被国外油田广泛采用。气体钻井方式的选择必须考虑地层的适用性、应用模式、后期完井方式以及经济性。通过对国外煤层气开发中气体钻井的应用情况、煤层特点、气体钻井应用于煤层气的技术模式进行分析，结合我国煤层气特点及气体钻井技术现状，探讨了在我国煤层气开发中开展气体钻井的可行性。

Developing status and prospects of gas drilling technology in CBM well

the particularity of coal bed methane reservoir has made the reservoir protection being put into a higher level during the drilling in CBM well.Gas drilling was considered to be one of effective methods to develop the coal bed methane and was used commonly on aboard.The selection of gas drilling manner must take into account the suitable,applied mode,later completion method and the economic.The application,characteristics of coal bed and technique mode of gas drilling applied to coal bed methane development...