| 黔西上二叠统煤的孔隙特征及其控制因素 |
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| 引用本文： | 蔡佳丽,汤达祯,许浩,李松,陈贞龙,陶树,赵兴龙.黔西上二叠统煤的孔隙特征及其控制因素[J].煤田地质与勘探,2011,39(5):6-10,14. |
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| 作者姓名： | 蔡佳丽 汤达祯 许浩 李松 陈贞龙 陶树 赵兴龙 |
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| 作者单位： | 1. 中国地质大学煤层气国家工程中心煤储层实验室, 能源学院, 北京 100083; |
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| 基金项目： | 国家自然科学基金重点项目(40730422); 国家科技重大专项课题(2008ZX05034-001) |
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| 摘 要： | 作为一种多孔介质，煤的孔隙性质直接影响煤层气的富集和扩散，因而对煤孔隙特征的研究至关重要。通过压汞测试和低温氮吸附测试数据，系统分析了黔西上二叠统煤的孔隙形态、孔隙类型及孔径分布特征，并从煤岩显微组分及煤级方面探讨了该区煤储层孔隙发育的控制因素。研究结果表明:黔西煤样孔隙度为1.4%～9.5%，且由北至南有减小趋势；孔隙类型以吸附孔为主，其中高煤级煤孔隙以一端封闭型孔居多，与低煤级区相比，其渗透性和连通性较差，但黔西地区整体优于沁水盆地；煤级是影响煤储层孔隙变化的主控因素，随着煤级增加，孔隙度呈现由低到高的变化趋势。
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| 关 键 词： | 黔西 煤储层 孔隙特征 控制因素 |
| 收稿时间： | 2011-01-07 |
Pore characteristics and controlling factors of Upper Permian coal in western Guizhou |
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| CAI Jiali,TANG Dazhen,XU Hao,LI Song,CHEN Zhenlong,TAO Shu,ZHAO Xinglong.Pore characteristics and controlling factors of Upper Permian coal in western Guizhou[J].Coal Geology & Exploration,2011,39(5):6-10,14. |
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| Authors: | CAI Jiali TANG Dazhen XU Hao LI Song CHEN Zhenlong TAO Shu ZHAO Xinglong |
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| Institution: | 1. Coal Reservoir Laboratory of National CBM Engineering Center, School of Energy Resources, China University of Geosciences, Beijing 100083, China;2. Research Institute of Petroleum Exploration and Development, East China Company, SINOPEC, Nanjing 210011, China;3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China |
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| Abstract: | Coal as a porous media,the properties of its pores will affect the enrichment and diffusion of coal bed gas directly so that it is very essential to discuss the pore characteristics of coal.By using the data from the mer-cury-injection tests and low temperature nitrogen adsorption tests,the authors analyzed the pore shape,types and distribution of the Upper Permian coal samples in western Guizhou systematically.Moreover,the geological control of the pore occurrence in the coal reservoir was discussed in the... |
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| Keywords: | western Guizhou coal reservoir pore geological control |
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