A new Production prediction model of staged fracturing horizontal wells for tight gas reservoirs

Numerical simulations have been frequently used to predict reservoir productivity and optimize the development scheme of non-conventional reservoirs. In this study, a new numerical simulation model of the gas flow based on the embedded discrete fracture model, which considers the start-up pressure gradient and stress sensitivity in the matrix system, is established. The proposed model is numerically solved and validated using the field production data. Based on the novel model, the sensitivity effect of the start-up pressure, stress sensitivity, and fracture layouts on production are considered. The results indicate the production of each fracture is distributed as U-shaped, the production of the outermost two fractures have the highest production.