高校地质学报2012，Vol.18Issue(3)：460-464,5.
准噶尔盆地东南部低煤阶煤层气富集条件及主控因素
Accumulation and Geological Controls of Low-Rank Coalbed Methane in Southeastern Junggar Basin
摘要
Abstract
Coalbed methane (CBM) resources in the Junggar Basin, Xinjiang, China are abundant. The most favorable targets for CBM resources occur in the southern Junggar Basin, with stable and thick coal seams, shallow buried depth and higher CBM content. The lack of geological knowledge of CBM accumulation and generation is the reason why the exploration in the region had not achieved for many years. Based on the analysis of CBM accumulating conditions, it was considered that the favorable geological controls of CBM accumulation occur in southern Junggar with the higher coal rank, the better hydrological conditions and the abundant gas supply including the secondary biogenic gas and pyrolzed deep gas. CBM content is low in eastern Junggar because of the lower coal rank, higher groundwater mineralization and the poor CBM preservation. On the basis of the analysis abovementioned, it was suggested that the key geological controls of CBM accumulation in the southern Junggar are the structure, hydrology and cap-rock. Favorable structural positions could control the pyrolyed deep gas supply. The hydrogeological conditions might be favorable of secondary biogenic gas generation. The favorable cap rocks could make CBM to be preserved.关键词
准东南地区/煤层气/富集/主控因素Key words
southeastern Junggar Basin/ coalbed methane/ reservoiring condition/ geological key control分类
天文与地球科学引用本文复制引用
孙钦平,孙斌,孙粉锦,杨青,陈刚,杨敏芳,杨银平..准噶尔盆地东南部低煤阶煤层气富集条件及主控因素[J].高校地质学报,2012,18(3):460-464,5.基金项目
国家科技重大专项项目(2011ZX05033-02)资助 （2011ZX05033-02）
