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:
Aug. 14, 2018
Filed:
Apr. 28, 2017
Saudi Arabian Oil Company, Dhahran, SA;
Leiming Li, Sugar Land, TX (US);
Feng Liang, Cypress, TX (US);
Sehmus Ozden, Houston, TX (US);
Ghaithan A. Al-Muntasheri, Houston, TX (US);
B. Raghava Reddy, Pearland, TX (US);
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
In accordance with one or more embodiments, this disclosure describes a viscoelastic surfactant fluid for a subterranean formation comprising: brine solution; at least one polyacrylamide viscosity modifier with a weight averaged molecular weight (Mw) from 250,000 g/mol to 40,000,000 g/mol; and a viscoelastic surfactant according to formula (I): where Ris a saturated or unsaturated hydrocarbon group of from 17 to 29 carbon atoms, Rand Rare each independently selected from a straight chain or branched alkyl or hydroxyalkyl group of from 1 to 6 carbon atoms; Ris selected from H, hydroxyl, alkyl or hydroxyalkyl groups of from 1 to 4 carbon atoms; k is an integer of from 2-20; m is an integer of from 1-20; and n is an integer of from 0-20.