Efficiency of reservoir pressure maintenance system in low-permeable heterogeneous reservoirs

Abstract

The article presents a generalization of experience in organizing the reservoir pressure maintenance system in low-permeability reservoirs of Tyumen suite. The author of the article considers the issues of influence of the density of the grid of directional wells and the intensity of waterflooding on the efficiency of the reservoir pressure maintenance system. The question of the need to take into account the orientation of the horizontal wells with multistage hydraulic fracturing system with respect to regional stress in order to minimize the breakthrough of the injected water is disclosed in detail. A comparative characteristic of the efficiency of the reservoir pressure maintenance in the system "along" and "across" of stress is given. A new express method is described for determining the optimal oil production period individually for each injection well, which allows maximizing oil production without additional costs. The author of the article gives recommendations for monitoring and regulating water injection.