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:
Jan. 27, 2015
Filed:
Nov. 23, 2011
Björn Langlotz, Trostberg, DE;
Roland Reichenbach-klinke, Traunstein, DE;
Christian Spindler, Ludwigshafen, DE;
Benjamin Wenzke, Hamburg, DE;
Björn Langlotz, Trostberg, DE;
Roland Reichenbach-Klinke, Traunstein, DE;
Christian Spindler, Ludwigshafen, DE;
Benjamin Wenzke, Hamburg, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for mineral oil production, in which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is injected through at least one injection borehole into a mineral oil deposit, and crude oil is withdrawn from the deposit having a deposit temperature of 35° C. to 120° C., preferably 40° C. to 90° C., through at least one production borehole, wherein the water-soluble, hydrophobically associating copolymer comprises at least acrylamide or derivatives thereof, a monoethylenically unsaturated monomer having anionic groups and a monoethylenically unsaturated monomer which can bring about the association of the copolymer.