| 围限压力下煤岩孔隙度的变化特征及应用 |
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| 引用本文： | 苏付义.围限压力下煤岩孔隙度的变化特征及应用[J].煤田地质与勘探,1994,22(3):27-31. |
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| 作者姓名： | 苏付义 |
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| 作者单位： | 地质矿产部华北石油地质局 |
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| 摘 要： | 在对３０多个煤岩样品在不同围限压力下测得的孔隙度进行研究的基础上，结合煤层甲烷开采的生产特点，讨论了煤岩孔隙度在围限压力下的变化特征。进而探讨了煤岩地下孔隙度的计算方法和煤岩有效孔隙体积压缩系数的变化特征。
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| 关 键 词： | 孔隙度 有效孔隙体积压缩系数 围限压力 煤层 |
VARIATIONAL CHARACTERISTIC OF COAL FOROSITY UNDER DIFFERENT CONFINING PRESSURES AND ITS APPLICATION |
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| Su Fuyi.VARIATIONAL CHARACTERISTIC OF COAL FOROSITY UNDER DIFFERENT CONFINING PRESSURES AND ITS APPLICATION[J].Coal Geology & Exploration,1994,22(3):27-31. |
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| Authors: | Su Fuyi |
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| Institution: | North China Bureau of Petroleum Geology |
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| Abstract: | ystematic research on the porosity data obtained under different confining pressures frommore than 30 coal samples is conducted considering the production characteristic of coalbed methane. Resultsshow features of coal porosity varying with the confining pressures.And then, underground coal porositycalculation method and variational characteristic of coal effective pore volume compressibility are discussed.Moreover, an analysis of the difference between coalseam and sandstone as a reservoir is also included in thispaper. |
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| Keywords: | porosity effective pore volume compressibility confining pressure coal seams |
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