S.p.c.m. Sa

Veolia Water Solutions & Technologies Support

Snf Sa

Snf S.a.s.

Ludwig Gil

Cedrick Favero

Mouloud Hendou

Christophe Rivas

Camille Sagne

Cédrick Favero

Rene Pich

René Pich

Jean-Sébastien Fruchart

The present invention concerns a method for treating the production water originating from enhanced hydrocarbon recovery, and containing one or more water-soluble polymers and Feions, consisting of at least partially oxidizing the Feions by introducing at least one reaction activator and oxygen into said production water, the molar ratio of introduced oxygen to Feions being less than or equal to 0.25.

Method for treating production water from a method for enhanced oil and/or gas recovery

The present invention is concerned with the treatment of produced water, that may be obtained from a chemically enhanced oil recovery process using viscosity-increasing polymeric compounds. Said treatment comprises particularly the steps of obtaining a produced water, such as from an oil-water mixture recovered from an oil-bearing formation, wherein the produced water comprises the viscosity-increasing polymeric compounds; and, of directing the produced water to a specific filtration device, and subjecting the produced water to filtration, for obtaining a retentate stream and a permeate stream. Said process allows particularly obtaining a permeate comprising the viscosity-increasing polymeric compounds, said permeate being substantially free of suspended solids, free oil and emulsified oil.

Treatment of produced water, particularly obtained from a chemically enhanced oil recovery process using viscosity-increasing polymers

The present invention is concerned with the treatment of produced water, obtained from a chemically enhanced oil recovery process using viscosity-increasing polymeric compounds. Said treatment comprises particularly the steps of obtaining a produced water, from an oil-water mixture recovered from an oil-bearing formation, wherein the produced water comprises the viscosity-increasing polymeric compounds; and, of directing the produced water to a specific filtration device, and subjecting the produced water to filtration, for obtaining a retentate stream and a permeate stream. Said process allows particularly obtaining a permeate comprising the viscosity-increasing polymeric compounds, said permeate being substantially free of suspended solids, free oil and emulsified oil.

Chemically enhanced oil recovery method using viscosity-increasing polymeric compounds

A process for the enhanced recovery of oil in a deposit introduces into the deposit an alkaline aqueous solution of a water-soluble polymer containing a surfactant. The aqueous solution of water-soluble polymer introduced is prepared with an aqueous solution initially containing Caand Mgions treated with an alkaline agent and a dispersant, so as, prior to the introduction of the polymer and the surfactant into the aqueous solution, to precipitate, under the action of the alkaline agent and of COoptionally dissolved in the aqueous solution, the Caand Mgions. The precipitates are especially in the form of precipitates of calcium carbonate and of magnesium hydroxide and are dispersed owing to the dispersant, which is chosen in order to limit the size of the calcium carbonate and magnesium hydroxide precipitates.

Process for enhanced oil recovery using the ASP technique

Growing community of inventors

Saint Etienne, France

Ludwig Gil