| 鄂尔多斯盆地东部上古生界煤层气储层特征 |
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| 引用本文： | 刘新社,席胜利,周焕顺.鄂尔多斯盆地东部上古生界煤层气储层特征[J].煤田地质与勘探,2007,35(1):37-40. |
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| 作者姓名： | 刘新社 席胜利 周焕顺 |
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| 作者单位： | 1. 西北大学地质系,陕西,西安,710069;中国石油长庆油田勘探开发研究院,陕西,西安,710021
2. 中国石油长庆油田勘探开发研究院,陕西,西安,710021 |
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| 基金项目： | 国家“973”项目(2003CB214601)，国家重大基础研究计划项目(2002CCC01400)资助 |
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| 摘 要： | 鄂尔多斯盆地东部上古生界煤层气储层的孔隙类型以气孔和植物组织孔占优势,孔隙体积比中,大孔和微孔达80%~90%。煤层的有效孔隙度低,使裂隙成为煤层气的主要运移通道。主干裂隙走向受古应力场的控制,与主应力方向相一致;裂隙发育程度从北向南具有明显的分带性。综合分析认为,南部吴堡—柳林和乡宁—韩城一带煤层气储集条件有利,是煤层气勘探开发的有利地区。
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| 关 键 词： | 煤层气 储集特征 石炭系 二叠系 鄂尔多斯盆地 |
| 文章编号： | 1001-1986（2007）00-0037-04 |
| 修稿时间： | 2006-09-11 |
Features of upper Paleozoic coalbed methane reservoir in eastern Ordos Basin |
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| LIU Xin-she,XI Sheng-li,ZHOU Huan-shun.Features of upper Paleozoic coalbed methane reservoir in eastern Ordos Basin[J].Coal Geology & Exploration,2007,35(1):37-40. |
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| Authors: | LIU Xin-she XI Sheng-li ZHOU Huan-shun |
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| Abstract: | It is indicated that as far as the upper Paleozoic coal bed meathane reservoir is considered,the gas pole and plant tissue holes are the dominant storing spaces in eastern Ordos Basin. The large pores and micro-pores are amount to 80% - 90% of the pore volume. The poor effective porosity of coal makes the cracks asthe principal migration tunnel. Meanwhile,the orientation of main crack is controlled by stress field, and accords with the principal stress. The cracks are obviously zonally developed from the north to the south. Based on the analysis above stated, it is therefore concluded that, Wupu - Liulin and Xiangning-Hancheng areas should be taken as target areas for coalbed methane exploration. |
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| Keywords: | coalbed methane reservoir feature Carboniferous Permian Ordos Basin |
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