Multi-Well Pressure Interference and Gas Channeling Control in W Shale Gas Reservoir Based on Numerical Simulation

Well interference has drawn great attention in the development of shale gas reservoirs. In W reservoir, well increased from 27% to 63% between 2016 and 2019, but production recovery parent wells was only about 40% 2018 2019. Therefore, mechanism influencing factor degree were analyzed this study. A numerical model reservoir developed for history matching, mechanisms analyzed. Sensitivity analysis effect different parameters on carried out. Furthermore, feasibility effectiveness injection pressure boosting prevent demonstrated. The results show that main causes inter-well are: energy before hydraulic fractures child well, spacing, fracture connection, etc. could open under high causing fracturing fluid flow in, while closure happens low influence two-phase seepage becomes more serious. combination liquid phase retention comprehensively affects capacity fractures. Gas can effectively fluids flowing through connected Before fracturing, pressurization reduce stress difference decrease interference. field case indicates channeling be prevented pressurization.