准噶尔盆地南缘煤层气地质研究及技术进展

Geological Research and Technical Progress of Coalbed Methane in Southern Margin of Junggar Basin

由于大倾角、多厚煤层、中低煤阶等有别于国内外已有成功开发区块的独特地质特点,准噶尔盆地南缘煤层气勘查和开发利用先导试验建设中,开展了技术攻关及试验,地质认识获得较大进步,初步建立了适应其地质特点的工艺技术体系。在煤层气开发中也涌现出许多难题,要实现规模有效开发,还需优化、攻关和创新地质精准选区和精细评价技术、地质与工程一体化技术、储层改造工艺技术、多煤层有序开发技术和合层排采层位优选方法等。

Due to the unique geological characteristics of large dip angle, multi thick coal seams, and medium and low coal rank, which are different from the successful development blocks at home and abroad, in the pilot test construction of coalbed methane exploration, development and utilization in the southern margin of Junggar Basin, the technical breakthrough and test have been carried out, great progress has been made in geological understanding, and the process and technology system suitable for its geological characteristics has been preliminarily established. Many problems have also emerged in the development of coalbed methane. To achieve large-scale and effective development, it is also necessary to optimize, tackle key problems and innovate a series of technologies, including the geological precise selection and fine evaluation technology, the geological and engineering integration technology, the reservoir reconstruction technology, the multi coal seam orderly development technology and the combined drainage mining layer optimization method.