Hydrodynamic model application to create a reverse oil cone in water-oil zones

Abstract

For the conditions of the development of bottom water-drive reservoirs in terrigenous deposits with low permeability of oil-saturated rocks in the dome of the formation, we propose a technology of reverse oil cone creating for effective residual oil reserves development. To visualize the oil recovery process, we created a hydrodynamic model, which makes it possible to increase the efficiency of the proposed technology, as well as to regulate the technology parameters. We considered the issues of the following models creating: the water cone formation during the near-roof part of the formation perforation; the a cone of oil formation in the process of water withdrawing from reservoirs with cutoff water saturation; erosion of the oil cone during its production from the interlayers with the highest oil saturation. The parameters influencing the efficiency of proposed reverse cone technology application are determined.