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沁水煤田中东部地区深部煤层气开发潜力评价

Evaluation on development potential of deep coalbed methane inmiddle-east area of Qinshui Coalfield

  • 摘要: 为了促进山西省深部煤层气产业进一步发展,基于对山西省煤层气资源勘查开发现状的分析,对沁水煤田中东部榆社-武乡地区构造、煤层基本特征、煤层气含量及储层物性特征的分析研究,认为该研究区构造稳定,深部煤层气开发潜力巨大。研究结果表明:研究区3号和15号煤层含气量平均值分别为18.63 m~3/t和17.58 m~3/t;经估算,全区3号和15号煤层气潜在资源量约2 278×10~8m~3;同时,通过对煤系“三气”的共探技术的总结和评价,发现裸眼多参数测井和随钻气测录井是发现和评价煤系页岩气等非常规天然气重要的勘查手段。根据研究结果,提出了山西省深部煤层气的勘查方向和研究重点。

     

    Abstract: In order to promote a further development of the deep coalbed methane industry in Shanxi Province, based on the analysis on the development status of the coalbed methane resources survey in Shanxi Province, an analysis study was conducted on the structure of Yushe-Wuxiang area, basic characteristics of the seam, coalbed methane content and physical characteristics of the reservoirs in the middle-east part area of Qinshui Coalfield and the study held that in the study area, the structure was stable and the development potential of the deep coalbed methane was tremendous. The study results showed that the gas content of No. 3 seam and No. 15 seam in the study area was 18.63 m3/t and 17.58 m3/t individually in average value. With the estimations, the potential resources volume of the coalbed methane in No. 3 seam and No. 15 seam of the study area was about 2 278×108 m3.Meanwhile, with the summarization and evaluation of the coal measure “three gases” co-exploration technology, the open-hole multi-parameter logging and the gas logging with the drilling was found as the important survey means to discover and evaluate the coal measure shale gas and other unconventional natural gas. According to the available geological information and the knowledge obtained, the further survey orientation and the study focus of the area were provided.

     

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