METHOD FOR DEVELOPING THE OIL DEPOSIT Russian patent published in 2018 - IPC E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the oil and gas production industry, in particular to the methods for developing heterogeneous oil layers at the latest stages of their development. Use of the coagulant, which is obtained from titanium-containing ore leucoxene in the form of its 1–30 % aqueous suspension for treating the watered oil reservoir by means of pumping this suspension into the mentioned oil reservoir at the total injection volume of 600–3,600 m³ in cycles with the number of cycles of 3–5, the holding time between the cycles of 36–72 hours, after the end of the last period of exposure to the formation, the injection of bottom water, drilling mud, water from any natural source, reservoir or specially prepared dispersions based on wood flour, clay powder, dolomite, limestone and other finely ground materials, with the fine suspension content of at least 1,000 mg/dm^3, is continued, the concentration of these fine suspensions in water is sufficient for formation in the reservoir in the zones with increased permeability for a short time – from one to four months in case of coagulation of suspensions by the coagulant, for the formation of barriers by means of filling 0.1–0.3 pore volumes of highly permeable medium in the coagulant location area.

EFFECT: technical result is the increased efficiency of the method for developing the oil deposit.

3 cl, 3 tbl