收稿日期: 2009-08-11
修回日期: 2009-11-14
网络出版日期: 2010-06-10
基金资助
国家科技重大专项“大型油气田及煤层气开发”项目“煤层气与煤炭协调开发关键技术”(编号:2008ZX05040);“973”煤层气项目“高丰度煤层气富集机制及提高开采效率基础研究”(编号:2009CB2196)联合资助.
Study of Permeability of Coal Seam Based on Data Well Production in South Qinshui Basin
Received date: 2009-08-11
Revised date: 2009-11-14
Online published: 2010-06-10
张培河 . 基于生产数据分析的沁水南部煤层渗透性研究[J]. 天然气地球科学, 2010 , 21(3) : 503 -507 . DOI: 10.11764/j.issn.1672-1926.2010.03.503
The south Qinshui basin is one of the most hot areas in the coalbed methane (CBM) exploitation and the first commercial exploitation of CBM in China. No 3 and No 15 coal seams is the developed seam of CBM, with gas production of 2 000~5 000 m3/d for single well. The permeability is generally about 1.0×10-3μm2 by input or drawdown test. Base on data of CBM production in different blocks, the permeability of coal seam is amended by historical matching of numerical simulation. The amended permeability is in range of (0.47~3.95)×10-3μm2, which is about 6.76 times than that of well test. The positive relationship between CBM production and amended permeability of coal seam exists. The permeability of coal seam in the south of Qinshui basin is high, especially at the Panzhuang and Duanshi areas.
Key words: Production data; Permeability; Historical matching; Well test.
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