系统论述了水、气二相渗流耦合模型全隐式联立求解的方法与原理。该方法是将水相运动方程和气相运动方程左端的达西系数项 ,井点的气、水产量项作隐式处理 ,并将气相和水相方程联立起来进行求解 ,同时隐式求出压力和饱和度值。因此 ,收敛速度快 ,且无条件稳定。该方法应用于沁水盆地 3#煤层气井气、水产量的预测 ,效果良好。 The method and principle of total implicit simultaneous solution of coupled model of water and gas seepage are discussed systematically. In this method, the Darcy coefficient term at the left end of the equation of the gas phase and the gas and water yield at the well point are implicitly treated, and the equations of gas phase and water phase are combined together to solve simultaneously. At the same time, the equation Pressure and saturation values. Therefore, the convergence speed, and unconditionally stable. The method is applied to the prediction of gas and water production of No.3 coalbed methane well in Qinshui Basin with good results.