Influencing factors of stimulated reservoir volume of vertical wells in tight oil reservoirs

The typical fracture network models of vertical well were established based on Triassic Chang 7 tight reservoirs characteristics. The development effects of networks fracturing and regular fracturing numerical simulation models were compared. The effects of different fracture network pattern, fracture spacing and fracture network conductivity on stimulated reservoir volume (VSR) were discussed. The result shows that network fracturing could change the seepage environment, increase reservoir producing extent, and improve well performance greatly. The higher stimulated reservoir volume is created, the higher production is. When the VSR is an constant, the development effect is closely related to fracture volume which is the volume of fracture connecting well bore. The fracture spacing and fracture network conductivity have a significant impact on VSR.