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.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
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)
关键词
滑脱效应
低渗透储层
解析分析
滑脱因子
slippage effect
hypotonic reservoir
analysis solution
Klinkenberg factor