Numerical Simulation of Influencing Factors of Hydraulic Fracture Network Development in Reservoirs with Pre-Existing Fractures

The intersection behavior of hydraulic fractures and single natural has been studied in detail; however, fractured reservoirs, are numerous interlaced the multiple occurs during fracturing process. This is more complex there a lack research on this topic at present. In study, numerical simulation model interaction between series was established, main factors that affect formation scale fracture network reservoir were using method, parameters also studied. results showed trend, situ stress difference, injection flow rate have an impact network. larger smaller network, which gradually changes from clusters to fractures. rate, uniform field, direction closer principal stress, so lower extension pressure, On contrary, farther away direction, pressure higher