Numerical Simulation Research on Horizontal Well Fracture Parameters Optimization of Gas Reservoir

The horizontal well has been more and more applied to low-permeable oil and gas reservoirs. Since the low-permeable reservoir has poor connectivity and slow speed of pressure conduction, in order to ensure the horizontal well development effect and to improve the productivity and ultimate recovery of the gas reservoir, the fracturing is still needed to ensure that the wellbore can communicate more reservoirs, and horizontal wells often need to adopt an approach of multiple segment crosscutting fractures,which can achieve good effect. Fracture parameters are important factors to affect the productivity of horizontal wells. In this paper,effects of fracture length, fracture numbers, permeability, porosity and other impact factors on the production after the fracturing were analyzed, and numerical simulation was carried out based on X well data, the optimal design of the horizontal well fracture parameters in Sulige gas field was carried out. The research results show: the simulation of a horizontal well production after fracturing is consistent with actual construction production, so the simulation method has better applicability.