Ecolab USA Inc.

Nalco Company

Edward Maharaih

Anthony G Sommese

Kimberly Jantunen Cross

Anoop Chengara

Processes for recovering hydrocarbons from subterranean formations are disclosed. The hydrocarbon can be contacted with water or steam and one or more additives, and subsequently recovered. The hydrocarbon can be selected from the group consisting of heavy or light crude oil, bitumen, an oil sand ore, a tar sand ore and combinations thereof. The additive can be, for example, a fluorinated hydrocarbon, one or more alcohols, combinations of alcohols, and combinations of one or more alcohols and one or more fluorinated hydrocarbons. Compositions or mixtures including hydrocarbons, water or steam, and additives are also disclosed.

Additives for improving hydrocarbon recovery

Disclosed and claimed is a method for improving the froth quality and bitumen recovery in primary bitumen extraction processes by coagulant addition in the underwash feed water. Preferred coagulants are cationic or amphoteric polymers. Coagulant addition in the underwash feed water reduces the solids content reporting to the primary bitumen froth in a primary separation vessel (PSC). This treatment program can also be combined with dispersant addition in the dilution make-up feed water into a PSC. Preferred dispersants are low molecular weight anionic polymers.

Growing community of inventors

Calgary, Canada

Edward Maharaih