The model of waterflooding of three-layer oil reservoir saturated with oil having non-Newtonian properties is presented. The paper deals with numerical model of oil displacement by water with the law of movement of oil fr om the limiting gradient shift. It is modeled a flow of non-Newtonian fluid in a porous medium in variables ‘velocity – saturation’. There is a comparison with a case when a limiting gradient of oil shear is neglected. It is shown that the final oil recovery factor will be thus essentially predatory.
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