OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2024 - IPC E21B43/20 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used in the development of a deposit with high-viscosity oil in a carbonate or terrigenous reservoir. Disclosed is oil deposit development method, which includes pumping of working agent into injection wells and extraction of products from production wells, wherein preliminarily selecting a section of the deposit with production and injection wells located at a distance of not more than 350 m, at a ratio of injection wells to production wells of 1:4 and more, respectively, perforated thickness of the productive formation is determined, then one of the injection wells of the deposit section is stopped and a working agent is pumped into it, working agent used is a foam system consisting of carbon dioxide and titanium dioxide nanoparticles, at following volume ratio of components of titanium dioxide nanoparticles to carbon dioxide of 1:5, respectively, in volume of 6 m³ per 1 m of perforated thickness of productive formation, at pressure not exceeding maximum permissible pressure on formation, then injection well is put into operation, injection well shutdown and working agent pumping are repeated in all injection wells in the deposit area. Thus, the proposed method of developing an oil deposit increases efficiency due to increased coverage of the formation by action and increased oil recovery factor of the oil formation.

EFFECT: increased efficiency of the method due to increased coverage of the formation by action and increased oil recovery factor of the oil formation.

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