公开(公告)号：US20210388256A1

公开(公告)日：2021-12-16

申请号：US17286469

申请日：2019-10-17

Applicant: BASF SE

Inventor： Faissal-Ali EL-Toufailli ,  Dennis Loesch ,  Anna-Corina Schmidt ,  Tobias Joachim Zimmermann ,  Markus Ostermayr ,  Jack F. Tinsley ,  Brent Busby

IPC: C09K8/68 ,  C09K8/88 ,  E21B43/267 ,  E21B15/00

Abstract: Process of fracturing subterranean, oil- and/or gas-bearing formations by injecting an aqueous fracturing fluid into a wellbore at a rate and pressure sufficient to penetrate into the formation, and to initiate or extend fractures in the formation, wherein the aqueous fracturing fluid is obtained by mixing at least an aqueous base fluid and an aqueous polyacrylamide concentrate having a concentration of 3.1 to 14.9% by weight of polyacrylamides, relating to the total of all components of the aqueous polyacrylamide concentrate, and wherein at least a part of the aqueous fracturing fluid injected additionally comprises a proppant.