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:
Nov. 05, 2024
Filed:
Dec. 08, 2021
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Peter Boul, Houston, TX (US);
Kenneth Dejuan Johnson, Houston, TX (US);
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/487 (2006.01); C04B 14/30 (2006.01); C04B 24/00 (2006.01); C04B 24/16 (2006.01); C04B 24/26 (2006.01); C04B 24/34 (2006.01); C04B 28/08 (2006.01); C09K 8/514 (2006.01); C04B 103/00 (2006.01); C04B 103/32 (2006.01); C04B 103/46 (2006.01); C04B 103/50 (2006.01);
U.S. Cl.
CPC ...
C09K 8/487 (2013.01); C04B 14/30 (2013.01); C04B 24/003 (2013.01); C04B 24/163 (2013.01); C04B 24/2647 (2013.01); C04B 24/34 (2013.01); C04B 28/08 (2013.01); C09K 8/514 (2013.01); C04B 2103/0035 (2013.01); C04B 2103/0059 (2013.01); C04B 2103/32 (2013.01); C04B 2103/46 (2013.01); C04B 2103/50 (2013.01);
Abstract
Fluid loss control additives for a cement slurry are provided. An exemplary fluid loss control additive includes a copolymer containing 2-acrylamido-2-methylpropane sulfonic acid monomer units and acryloylmorpholine monomer units, and a graft copolymer. The graft copolymer contains a humate and, grafted onto the humate, a side-chain polymer containing at least one of acrylamide monomer units, acryloylmorpholine monomer units, acrylic acid monomer units, and 2-acrylamido-2-methylpropane sulfonic acid monomer units.