| 黔西县官寨井田煤层气地质特征及开发地质评价 |
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| 引用本文： | 江勇.黔西县官寨井田煤层气地质特征及开发地质评价[J].中国煤炭地质,2008,20(4):39-41. |
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| 作者姓名： | 江勇 |
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| 作者单位： | 江勇（贵州煤矿地质工程咨询与地质环境监测中心,贵州,贵阳,550006） |
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| 摘 要： | 官寨井田位于贵州省黔西县南部，含丰富的煤炭资源。为查明井田内煤层气分布特征和开发潜力，从构造、围岩、煤层埋深、水文地质等方面分析了煤层气赋存地质条件及煤赋层特征，认为井田内主要煤层4、9号煤均为无烟三号煤，煤层厚度大（主要煤层总厚度为13.20～21.30m），煤层气含量大，4号煤为9.08～24.30m^3/t，9号煤为14.95～24.90m^3/t，煤层顶底板岩性渗透率低，透气性弱，有利于煤层气富集。井的中北部煤层气赋存条件好，含气量在13m^3/t以上，最高可达24.9m/t，是今后煤层气开发的首选地段。区内煤层气总资源量丰富，煤层埋藏适中，地理位置有一定区位优势，交通便利，煤层气的开发利用将会取得较好的社会和经济效益。
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| 关 键 词： | 煤层气 赋存地质条件 煤赋层特征 开发利用评价 官寨井田 |
| 文章编号： | 1674-1803(2008)04-0039-03 |
CBM Geological Features and Exploitation Evaluation in Guanzhai Minefield, Qianxi County |
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| Jiang Yong.CBM Geological Features and Exploitation Evaluation in Guanzhai Minefield, Qianxi County[J].Coal Geology of China,2008,20(4):39-41. |
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| Authors: | Jiang Yong |
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| Institution: | Jiang Yong (Guizhou Coalmine Geological Engineering Consultant and Geological Environmental Monitoring Center, Guiyang, Guizhou 550006) |
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| Abstract: | The Guanzhai minefield is situated in southern part of the Qianxi County, Guizhou Province, it possesses abundant coal resources. To find out CBM distributing features and exploitation potential, analyzed CBM hosting geological condition and coal reservoir characteristics from aspects of geological structure, surrounding rock, coal seam burying depth and hydrogeology, considered that the main Nos.4 and 9 coals are all No.3 anthracite with large seam thickness （total thickness of main coal seams is 13.20-21.30m）, large CBM content, in No.4 coal seam is 9.08-24.30m^3/t, No.9 coal seam14.95-24.90m^3/t, coal seam roofs and floors have low permeability for both liquid and gas in favor of CBM concentration. Middle north part of the minefield has good CBM hosting condition, CBM content is above 13m^3/t, maximum can be 24.90m^3/t as high, thus the preferred sector for exploitation henceforth. Total CBM resources is abundant in the area, medium coal seam burying depth, preponderant geographic location, convenient traffic, thus better socioeconomic performance can be expected in CBM exploitation and utilization. |
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| Keywords: | CBM hosting geological condition coal hosting features exploitation and utilization evaluation Guanzhai minefield |
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