中国煤层气产业化开发的技术选择

Technology Selection on Industrialization Development of Coal Bed Methane in China

中国煤层气藏具有低渗、低压、低饱和、构造煤发育、非均质性强烈以及高的构造应力场环境等地质特征,在对煤层气3种开发技术的特点和要求分析的基础上,认为在我国用常规垂直井开采煤层气具有很大的地质局限性,指出煤、气一体化开采是中国煤层气规模化、产业化开发的最佳技术选择,它包括在采动影响区进行地面井开采和较为成熟的井下抽放2个方面。

China coal bed methane （CBM） reservoirs have six geologic particularities, including poor permeability, low reservoir pressure, low saturation, regionally appeared pulverized coal lenses, intensive heterogeneity and high tectonic stress field, etc. Based on the analysis of characteristics and demand to CBM development with 3 techniques, the author thinks that the commonly vertical wells develop CBM reservoir have many geological limitations in china. It is pointed out that the best technology option of industrialized development of CBM is integration of coal and gas exploitation, including 2 techniques, which are CBM development by gob surface wells in mining zone and CBM withdrawal through underground coal mines.