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:
Jun. 09, 2015
Filed:
Nov. 09, 2011
Roland Reichenbach-klinke, Traunstein, DE;
Oscar Lafuente Cerda, Ebersberg, DE;
Andrea Assmann, Unterreit, DE;
Björn Langlotz, Trostberg, DE;
Roland Reichenbach-Klinke, Traunstein, DE;
Oscar Lafuente Cerda, Ebersberg, DE;
Andrea Assmann, Unterreit, DE;
Björn Langlotz, Trostberg, DE;
BASF SE, Ludwigshafen, DE;
Abstract
What is proposed is the use of a water-soluble hydrophobically associating copolymer as an additive in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep drillings, wherein the copolymer comprises (a) at least one monoethylenically unsaturated monomer (a) selected fromHC═C(R)—R—O—(—CH—CH—O—)—(—CH—CH(R)—O—)—R  (I), and/orHC═C(R)—O—(—CH—CH—O—)—R  (II),and (b) at least one monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a),wherein the copolymer is obtainable through copolymerization of the monomers (a) and (b) in the presence of at least one surfactant (c).