考虑滑脱效应的水气耦合煤层气渗流数值模拟

建立了考虑滑脱效应影响的水、气两相流阶段的非线性渗流耦合模型，采用数值模拟手段研究了考虑水气耦合作用下的煤层气运移规律.得到了以下重要结论：在考虑水气耦合的煤层气渗流时，滑脱效应对压力场的影响不明显；气相相对渗透率对水相饱和度的影响很大，气相相对渗透率越大，相对研究区域水相饱和度变化的范围越大，变化越显著；时间效应对水相饱和度变化速率有很大的影响.

Coal-bed methane percolation numerical simulationconsidering gas slippage and water-gas-coupling

Established the non-linear seeping coupling model that considers the gas slippage and the situation that coal-bed methane dissolving in water.The law of coal-bed methane seeping was researched when both considered the gas slippage and water-gas coupling by finite element numerical simulation method.Some important conclusion can be gained: when considering water-gas two phase flow,the influence to the pressure field is not obvious by gas slippage;the gas relative permeability has significant influence to the water saturation;the time effect has significant influence to the changing rate of water saturation.