Method of recovering hydrocarbons from an underground formation

Details Method of recovering hydrocarbons from an underground formation Method of recovering hydrocarbons from an underground formation

E - Fixed Constructions

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B

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E21B 33/138 (2006.01) E21B 43/02 (2006.01) E21B 43/24 (2006.01) E21B 43/25 (2006.01) E21B 43/27 (2006.01)

Patent

CA 1248744

K 9627 A B S T R A C T METHOD OF RECOVERING HYDROCARBONS FROM AN UNDERGROUND FORMATION To prevent dissolution of sand grains or of the original bond between these grains around a well when hot aqueous fluid is passed through the well in an oil recovery process, the sand grains are at least once treated with a solution of Co ions in a solvent such as water. Such treatment with Co ions of sand grains is also beneficial when the grains have been consolidated by means of a silicon polyhalide. Attack of the bond between the grains by formation water is then considerably decreased. EQRH04

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