公开(公告)号：US20250154838A1

公开(公告)日：2025-05-15

申请号：US18838637

申请日：2023-02-09

Applicant: BASF SE

Inventor： Daniel BARRERA-MEDRANO ,  Anna-Corina SCHMIDT ,  Markus OSTERMAYR ,  Brent BUSBY ,  Jack F. TINSLEY

IPC: E21B21/06 ,  C09K8/584 ,  C09K8/588

Abstract: A device and a process for making aqueous treatment fluids for recovering crude oil from subterranean, oil-bearing formations, comprising water-soluble polymers, preferably polyacrylamides, by firstly diluting an aqueous polymer concentrate comprising 3.5 to 10 wt. % of water-soluble polymer with an aqueous base fluid to a concentration of 0.01 to 2 wt. % of the water-soluble polymer. And secondly, dosing the diluted aqueous polymer concentrate into a blender or a polymer injection unit to obtain an aqueous treatment fluid. The aqueous treatment fluids obtained may be used as fracturing fluids or as enhance oil recovery fluids, among others. Furthermore, a new aqueous polyacrylamide concentrate—and its preparation process—, which may be used as starting material for making aqueous treatment fluids. The new aqueous polyacrylamide concentrate comprises at least water, polyacrylamide, a salt and a polyol or a surfactant.

公开(公告)号：US20210347977A1

公开(公告)日：2021-11-11

申请号：US17286477

申请日：2019-10-17

Applicant: BASF SE

Inventor： Faissal-Ali EL-TOUFAILI ,  Dennis LOESCH ,  Anna-Corina SCHMIDT ,  Tobias Joachim ZIMMERMANN ,  Markus OSTERMAYR ,  Jack F. TINSLEY ,  Brent BUSBY ,  Daniel BARRERA-MEDRANO

IPC: C08L33/26 ,  C09K8/588 ,  E21B43/16

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.