IP Library › Granted Patent US 12,247,167
Granted Patent B2
US 12,247,167 · App. 17/644,450 · Granted Mar 11, 2025

Salt tolerant friction reducer

Inventors: Wenwen Li (Pearland, TX); Rajesh Saini (Cypress, TX)
Assignee: SAUDI ARABIAN OIL COMPANY
C09K8/905C08F220/06C08F220/282C08F220/56C09K8/68C09K2208/28
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Quick Facts
Patent No.
US 12,247,167
App. No.
17/644,450
Granted
Mar 11, 2025
Kind
B2
Abstract

Provided are water-soluble polymers that may include a water-soluble bipolymer, a water-soluble anionic terpolymer, and a water-soluble cationic terpolymer. The water-soluble polymers may include a reaction product of a first monomer that has a vinyl-containing group linked to a pendant carbohydrate moiety; a second monomer that has a vinyl group, a carbonyl group and a nitrogen; an anionic monomer in a water-soluble anionic terpolymer; and a cationic monomer in a water-soluble cationic terpolymer. Further provided are aqueous solutions that may include a water-soluble bipolymer, a water-soluble anionic terpolymer, and a water-soluble cationic terpolymer. Further provided are methods of use that may include introducing an aqueous solution into a formation such that the formation fractures, where the aqueous solution may include a water-soluble bipolymer, a water-soluble anionic terpolymer, and a water-soluble cationic terpolymer.

Claims (7)

1. An aqueous solution comprising:

a water-soluble anionic terpolymer that is a reaction product of a first monomer that has a vinyl-containing group that is an acryloyl group linked to a pendant carbohydrate moiety, a second monomer that has a vinyl group, a carbonyl group and a nitrogen, and an anionic monomer,

where the first monomer is glucose acrylate, the second monomer is acrylamide, and the anionic monomer is acrylic acid, and

where the aqueous solution has a salinity in a range of from about 4,000 mg/L to about 57,000 mg/L total dissolved solids.

2. A method of use comprising:

introducing an aqueous solution into a formation such that the formation fractures, where the aqueous solution comprises a water-soluble anionic terpolymer that is a reaction product of a first monomer that has a vinyl-containing group that is an acryloyl group linked to a pendant carbohydrate moiety, a second monomer that has a vinyl group, a carbonyl group and a nitrogen, and an anionic monomer, and where the aqueous solution has a salinity in a range of from about 4,000 mg/L to about 57,000 mg/L total dissolved solids,

wherein the first monomer is glucose acrylate, the second monomer is acrylamide, and the anionic monomer is acrylic acid.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 18, 2023
From: SAUDI ARAMCO UPSTREAM TECHNOLOGIES COMPANY
To: SAUDI ARABIAN OIL COMPANY
Reel/Frame 065268/0033 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2023
From: ARAMCO SERVICES COMPANY
To: SAUDI ARAMCO UPSTREAM TECHNOLOGIES COMPANY
Reel/Frame 065255/0383 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2022
From: LI, WENWEN; SAINI, RAJESH
To: ARAMCO SERVICES COMPANY
Reel/Frame 059087/0004 →
Continuity (2)
Provisional Application 63135887 · Jan 11, 2021
Related Publication 20220220367A1 · Jul 14, 2022
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