煤层气增产技术

Coal-bed gas stimulation technology

介绍了国内外煤层气开采现状、增产措施以及我国煤层气储层的特点,指出我国煤层气资源虽然十分丰富,但其勘探与开发水平还不高;我国煤层气储层的特点,决定了我国开采煤层气的难度较大。此外还分析了目前国内外煤层气增产的3项主要技术:水力压裂改造技术、煤中多元气体驱替技术和定向羽状水平钻井技术。

This paper introduces the development status of coal-bed gas, stimulation measures and the characteristic of coal seams in China, and points out that the resource of coal-bed gas is very rich in China, but the level of exploration and development is not high enough. It is determined by the characteristics of Chinese coal seams that they are difficult to exploit; this paper analyzes three main stimulation technologies: hydraulic fracturing, displacement of multi-gas and oriented pinnate horizontal well-drilling, which can provide technical guidance for developing coal-bed gas more efficiently and reasonably.