COMPOSITION OF REAGENT FOR DEVELOPMENT OF OIL FIELD BY FLOODING AND METHOD OF ITS APPLICATION Russian patent published in 2019 - IPC C09K8/575 E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular, to compositions and methods for controlling coverage of oil beds by flooding, and can be used in development of oil deposits developed with maintenance of formation pressure by pumping water or other agents (gases and air). Oil reagent reagent composition comprising titanium coagulant obtained from titanium-containing leucoxene ore, additionally contains aluminum hydroxochloride and carbamide in following ratio of components, wt%: titanium coagulant 10–40, aluminum hydroxochloride 20–40, carbamide 40–60. Method of developing an oil deposit by pumping an aqueous suspension into an oil formation, where an aqueous suspension of the above-mentioned reagent is injected into oil formation 5–20 wt%. Invention is developed in dependent items of the formula.

EFFECT: high efficiency of the composition by increasing the service life, improving the rheological properties of the gel obtained in formation conditions, increased strength of gel, reduced time of gel formation, absence of syneresis, and due to application of composition of formation coverage increase by 10–30%, and oil yield by 0,01–2 %.

7 cl, 1 ex, 2 tbl