| 宁夏汝箕沟矿区煤层气地质学特征 |
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| 引用本文： | 张学文, 穆桂松, 孟方, 苏现波. 宁夏汝箕沟矿区煤层气地质学特征[J]. 煤田地质与勘探, 2005, 33(3): 33-35. |
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| 作者姓名： | 张学文 穆桂松 孟方 苏现波 |
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| 作者单位： | 中国地质大学,北京,100083;河南省教育学院,郑州,450003;河南理工大学,河南,焦作,454000 |
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| 摘 要： | 根据煤田勘探、煤矿开采阶段的资料,结合室内外观测测试,探讨了二号煤的煤层气地质学特征: a. 汝箕沟矿区二号煤厚度巨大、连续性强、含气量高,为煤层气开发奠定了物质基础; b. 煤阶高,但基质孔隙、割理、外生裂隙发育,储层渗透性好; c. 区域上异常高压的分布范围可能比较广泛,且吸附等温线反映出利于降压排采的特征。这些都充分说明该区煤层气的勘探开发可与沁水盆地相媲美,且在煤厚、渗透性、异常压力、吸附等方面优于沁水盆地。
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| 关 键 词： | 汝箕沟矿区 煤层气 地质学特征 勘探开发 |
| 文章编号： | 1001-1986(2005)03-0033-03 |
| 收稿时间： | 2004-08-03 |
| 修稿时间： | 2004-08-03 |
Coalbed gas geological characteristics of No.2 coal in Rujigou district, Ningxia |
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| ZHANG Xue-wen, MU Gui-song, MENG Fang, SU Xian-bo. Coalbed gas geological characteristics of No.2 coal in Rujigou district, Ningxia[J]. COAL GEOLOGY & EXPLORATION, 2005, 33(3): 33-35. |
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| Authors: | ZHANG Xue-wen MU Gui-song MENG Fang SU Xian-bo |
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| Affiliation: | 1. Geological University of China, Beijing 100083, China;2. Education Institute of Henan Province, Zhengzhou 450003, China;3. Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | According to the data collected from different stages of coal exploration, coal mining, field investigation and laboratory measurements, the reservoir characteristics of No.2 coal are emphasized in this paper. The results show: a. No.2 coal seam is thick, laterally extensive, and high gas content, and that is the foundation for coalbed methane development; b. Although the coal rank is high, the matrix pores, cleats, and fractures are well-developed, therefore, the reservoir permeability is high; c. Perhaps the abnormal high reservoir pressure distributes regionally, as well as the adsorption isotherm showed that the coalbed gas can be quickly developed during depressurizing process. The conditions of coalbed gas ara more favorable for development in the Rujigou district than that in the Qinshui basin with the correlations of coal thickness, permeability, abnormal high pressure, and adsorption. |
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| Keywords: | Rujigou coal district coalbed gas geological characteristics exploration and development |
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