Quantitative evaluation indexes of the spatial steering effect of directional perforation hydraulic fractures

To better evaluate the spatial steering effect of directional perforation hydraulic fractures, evaluation indexes for are first proposed in this paper. Then, these used to quantitatively existing physical experimental results. Finally, with help RFPA 2D -Flow software, influence length and azimuth on process fracture analysed using four indexes. It is shown by results that deflection trajectory, distance, angle initiation pressure fractures can be as quantitative fractures. The paths basically same. They all gradually deflect maximum horizontal principal stress direction from hole finally represent a double-wing bending fracture. increase increasing azimuth, sensitivity also increases. With length, distance increases gradually. However, decrease gradually, does sensitivity.