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:
Dec. 31, 2019
Filed:
Dec. 01, 2015
Huntsman Petrochemical Llc, The Woodlands, TX (US);
Luis C. Salazar, Montgomery, TX (US);
David C. Lewis, Conroe, TX (US);
Srinivasa Godavarthy, Fort Mill, SC (US);
HUNTSMAN Petrochemical LLC, The Woodlands, TX (US);
Abstract
Methods of enhanced oil recovery are disclosed that use compositions including an alkyl polyether anionic surfactant having the general structure RJA, wherein Ris a C-Cprimary or secondary radical group, J is a random, block, alternating, or alternating block polyether segment having the structure [(PO)(EO)(BO)], wherein x is 4 to 18, y is 0 to 20, and z is 0 to 5, and A is an anionic group; a co-surfactant having the general structure (R)(B)Ph-L-Ph(D)(R), wherein Rand Rare each, independently in each instance, a C-Clinear or branched, primary or secondary alkyl group, B and D are anionic groups, q is 1 to 3, r is 1 to 3, and L is O or CH; and an alkoxy alcohol.