E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/19, 166/31
E21B 43/22 (2006.01) C09K 8/90 (2006.01)
Patent
CA 1108983
ABSTRACT OF THE DISCLOSURE A process for producing petroleum from subterra- nean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involved injecting via the injection well into the formation an aqueous solution of lignosulfonate salt modified by alkoxylation as a sacri- ficial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. The process may best be carried out by injecting the lignosulfonates modified by alkoxylation into the formation through the injection well mixed with either a polymer, a surfactant solution and/or a micellar dispersion. This mixture would then be followed by a drive fluid such as water to push the chemicals to the production well.
328540
Gowling Lafleur Henderson Llp
Texaco Development Corporation
LandOfFree
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