范章群,夏致远
FAN Zhangqun1, XIA Zhiyuan2 (1. Xi'an Branch

• 1:煤炭科学研究总院西安研究院
• 2:佛山市华特气体有限公司

摘要(Abstract)：

煤基质形状因子是研究煤层气扩散速率及数值模拟的重要参数,研究不同几何形态下的煤基质形状因子具有重要意义。通过求解煤层气扩散的定解问题,并假定时间无限长的条件下,将时变的形状因子简化为常量形状因子,从而推导出板状、柱状和球状基质的形状因子表达式,并指出这3种几何形态的形状因子值存在显著差异。
Coal matrix shape factor is an important parameter in studying numerical simulation and diffusion rate, so doing research on shape factor of different shape and size of matrix is meaningful. With assumption that the diffusion time is very long, the time-dependent factor is simplified to constant, so the expressions of factors of plate-like, columnar and spherical coal matrix, are obtained by solving diffusion equation in initial and boundary conditions. At the end, the conclusion is that the values of the three kinds of geometric shape present significant difference.

关键词(KeyWords)： 煤基质;形状因子;煤层气
coal matrix; shape factor; coalbed methane; CBM

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(50534070);; 国家科技重大专项大型油气田及煤层气开发项目(2008ZX05040-004)

作者(Author): 范章群,夏致远
FAN Zhangqun1, XIA Zhiyuan2 (1. Xi'an Branch

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