The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2014
Filed:
Jun. 10, 2009
Applicants:
David Rousseau, Nanterre, FR;
René Tabary, Saint German en Laye, FR;
Inventors:
David Rousseau, Nanterre, FR;
René Tabary, Saint German en Laye, FR;
Assignee:
IFP Energies Nouvelles, Rueil-Malmaison Cedex, FR;
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/27 (2006.01); E21B 43/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
An enhanced oil recovery method using injection of aqueous polymer solutions into the reservoir rock, includes the stages of: injecting a first aqueous solution of non-associative hydrophilic polymers into the reservoir in a predetermined proportion so that they adsorb on the reservoir rock; and then injecting a second aqueous solution of associative polymers into the reservoir for oil recovery, with limited adsorption considering the adsorption of the non-associative polymers of the first solution.