Non-Darcy effect on fracture parameters optimization in fractured CBM horizontal well

Based on the result, the variation law of Reynolds number, the effective permeability, the optimal fracture half-length, the optimal fracture width and the optimum dimensionless production index to the free-gas saturation in CBM reservoir are obtained. We can conclude that the non-Darcy turbulent flow effect can decrease the proppant effective permeability in the fractures by mean of the generation of additional pressure drop, which will decrease the fracture diverting capacity and the production rate.