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:
Nov. 19, 2013
Filed:
Oct. 13, 2010
Christian Bittner, Bensheim, DE;
Günter Oetter, Frankenthal, DE;
Jack Tinsley, Mannheim, DE;
Christian Spindler, Ludwigshafen, DE;
Gabriela Alvarez Jürgenson, Mannheim, DE;
Sophie Vogel, Mannheim, DE;
Christian Bittner, Bensheim, DE;
Günter Oetter, Frankenthal, DE;
Jack Tinsley, Mannheim, DE;
Christian Spindler, Ludwigshafen, DE;
Gabriela Alvarez Jürgenson, Mannheim, DE;
Sophie Vogel, Mannheim, DE;
BASF SE, , DE;
Abstract
A process for mineral oil production especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 11 to 40 ethoxy units and a hydrophobic radical having 8 to 32 carbon atoms and at least one further surfactant differing therefrom is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells.