When multiple fractures are created in a horizontal well, the effects of stress shadow or stress interference become an important consideration. Fracture spacing, fracture width distributions and propagation paths are all associated with stress shadow effects. Consequently, to make rational decisions on completion strategies and production performance analysis, operators need to make clear the stress shadow effects among multi-fractures.
In this paper, a multi-fracture propagation model was established to study the effects of stress shadow numerically. In the model, the stress field of multiple fractures was calculated by pseudo 3D boundary element method. Fluid flow was described by the lubrication equation. Fracture propagation velocities and paths were explicitly determined by subcritical fracture propagation law and maximum energy release rate law respectively. Multiple fr