METHOD FOR DEVELOPING DEPOSITS WITH LOW viscous oil reservoir temperature

摘要

1. A method for controlling development of an oil field with non-uniform permeability formations with low reservoir temperature of 60 ° C and lower, comprising pumping into the formation an aqueous aluminum salt solution of carbamide and hexamine, characterized in that the injection is carried out portionwise, first injected portion of an aqueous solution containing ., mass%: aluminum 1.5-3.0 salt, urea 3,75-15,0, 2.0-5.0 hexamine and the rest water, forming into a sol formation, and then at least one more portion of an aqueous solution containing, wt.%: aluminum salt 3,5-17,0 urea 16,0-30, 0, hexamine 5.0-10.0 and the rest water, forming a gel in the formation, wherein the ratio of urea: hexamine in aqueous solution to obtain a sol is from 0.75: 1 to 4: 1, to obtain a gel - 1.6 1 to 6: 1.2. A method according to claim 1, characterized in that the aluminum chloride salt is used, or aluminum nitrate, anhydrous or hydrated or partially hydrolyzed form, and Aluminum chlorohydrate comprises aluminum oxide is 10-30%.