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. 22, 2019
Filed:
Mar. 04, 2014
Shell Oil Company, Houston, TX (US);
Julian Richard Barnes, Amsterdam, NL;
James Laurel Buechele, Houston, TX (US);
Hendrik Dirkzwager, Heemstede, NL;
Willem Johan Louis Genuit, Baarn, NL;
Jeremiah Michael Purcell, Fulshear, TX (US);
Catherine Semien, Katy, TX (US);
Carmen Geraldine Reznik, Friendswood, TX (US);
SHELL OIL COMPANY, Houston, TX (US);
Abstract
The present invention provides an internal olefin sulfonate composition, comprising water and an internal olefin sulfonate mixture having an average carbon number of at least 20, wherein the internal olefin sulfonate mixture comprises hydroxy sulfonates and alkene sulfonates in a weight ratio of hydroxy sulfonates to alkene sulfonates of at least 3.25. The invention further provides a method of treating a crude oil containing formation.