Method of providing homogeneous aqueous polyacrylamide concentrates and use thereof

US11725102B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Faissal-Ali El-Toufaili · Ludwigshafen, DE
• Dennis Loesch · Altrip, DE
• Anna-Corina Schmidt · Trostberg, DE
• Tobias Joachim Zimmermann · Munich, DE
• Markus Ostermayr · Ludwigshafen am Rhein, DE
• Jack Tinsley · Mannheim, DE
• Brent Busby · Richmond, US
• Daniel BARRERA-MEDRANO · Ludwigshafen, DE

Key dates

• Filing date: Oct 17, 2019
• Grant date: Aug 15, 2023
• Expiry date: Oct 17, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2208/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process of providing polyacrylamides to a site-of-use comprising at least the steps of mixing a polyacrylamide powder at a manufacturing site with an aqueous liquid, thereby obtaining a homogeneous aqueous polyacrylamide concentrate, transporting said concentrate in a transport unit from the manufacturing site to the site-of-use, and removing the homogeneous aqueous concentrate from the transport unit at the site-of-use. Process of treating subterranean, oil and/or gas bearing formations by injecting an aqueous treatment fluid into at least one wellbore, wherein the aqueous treatment fluid is manufactured by mixing at least an aqueous base fluid with said homogeneous aqueous polyacrylamide concentrate at the site-of-use.