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:
Mar. 19, 2019
Filed:
Mar. 28, 2017
Chevron U.s.a. Inc., San Ramon, CA (US);
Robert George Shong, Houston, TX (US);
Varadarajan Dwarakanath, Houston, TX (US);
Gregory A. Winslow, Houston, TX (US);
Sophany Thach, Houston, TX (US);
CHEVRON U.S.A. INC., San Ramon, CA (US);
Abstract
The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. A specific embodiment relates to the use of an aqueous stream including a compound having the chemical formula: R—R—R, wherein Rcomprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking Rand R; Rcomprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and Rcomprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation.