Regulation of development of the main deposit of the рashi horizon bavlinskoye field by limiting water injection

Abstract

At the beginning of the 1950s, edge waterflooding, the first of many types of waterflooding, was applied to terrigenous deposits of the Pashi horizon of the Bavlinskoye field. Based on the results of geological and technological modeling, it was obtained that the development of low-permeability sections of the reservoir, intermediate zones in the area of the injection and contraction production rows lags behind and, undoubtedly, leads to a rapid water cut of the produced product and a decrease in the oil recovery factor, therefore the authors in this work conducted numerical experiments to regulate the front advancement of the injected water to the deposits of the Pashi object by limiting the volume of water injected into the reservoir using geological and technological 3D modeling. Analysis of the results of the conducted numerical experiments to regulate the development of the reservoir of the Pashi object by limiting the volume of water injection showed that in this way it is possible to improve the technological indicators of development (increase oil production and reduce water production) and select the most acceptable amount of injected water, which will be technologically and economically viable. Keywords: in-line and in-line waterflooding; oil-bearing contour; injection restriction; daily production; industrial experiment; injection wells ring; well injectivity; monolithic sandstones; filtration flow direction.