滑脱效应影响的低渗储层煤层气运移解析分析  

Analytical solution of coal-bed methane migration with slippage effects in hypotonic reservoir

作　　者：覃建华[1] 肖晓春[2] 潘一山[2] 于丽艳[2] 尹亮亮[2] 

机构地区：[1]中国石油大学(北京)资源与信息学院,北京102249 [2]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《煤炭学报》2010年第4期619-622,共4页Journal of China Coal Society

基　　金：国家自然科学基金重大资助项目(50490275)

摘　　要：采用理论分析方法建立了滑脱效应影响的低渗透储层煤层气运移的数学模型,得到了有限长煤层气体稳态流动的采场压力分布解析式;无限长煤层和球向坐标煤层气体瞬态流动的采场压力分布解析式和相应的产量预测公式。通过具体矿区实例分析了抽采过程中低渗透储层滑脱效应影响的采场压力变化规律和气体产量预测规律。Used theoretical analysis the single-phase gas seepage mathematical model influence by slippage effects was established,obtained the gas steady-flow analysis formula of pore pressure distribution in the finite coal bed; the gas transient flow analysis formula of pore pressure distribution in infinity and sphere coordinate coal bed and gas output prediction formula with gas slippage effects.Through the specific example analyzed the law of the stope pore pressure and gas output forecast changing in hypotonic reservoir with slippage effects in the mining process.

关 键 词：滑脱效应 低渗透储层 解析分析 滑脱因子 

分 类 号：TD712.6[矿业工程—矿井通风与安全]