Study on the Influence of Reservoir and Production Parameters on Reorientation Fracture

In order to improve the oil production in turnaround fracture well, the influence model of initial fracture on the stress field near the fracture is established, according to the reservoir stress field theory and production percolation theory of oil and gas well. The influence of reorientation fracture about the initial horizontal geostress difference, production pressure drop, reservoir permeability, fracture length and width are studied in turnaround fracture well. The impact of various factors on reorientation fracture is cleared by means of orthogonal experimental design and intuitive analysis method. Among several factors, initial horizontal geostress difference is the most important factor affecting the fracture reorientation, production pressure drop is the second place, reservoir permeability and fracture width are in the middle, and fracture length has the least effect on reorientation fracture. The research result given by this paper can provide a guidance for well and layer selection in turnaround fracture well.