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:
Sep. 20, 2022
Filed:
May. 11, 2018
Applicant:
Ecolab Usa, Inc., St. Paul, MN (US);
Inventors:
Dinesh Mantri, Pune, IN;
Jasbir S. Gill, Naperville, IL (US);
Assignee:
ECOLAB USA Inc., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 5/12 (2006.01); E21B 37/06 (2006.01); F24T 10/20 (2018.01); C09K 8/528 (2006.01); C02F 101/10 (2006.01);
U.S. Cl.
CPC ...
C02F 5/12 (2013.01); C09K 8/528 (2013.01); E21B 37/06 (2013.01); F24T 10/20 (2018.05); C02F 5/125 (2013.01); C02F 2101/10 (2013.01); C02F 2101/101 (2013.01); C02F 2303/22 (2013.01);
Abstract
The disclosure relates to improved methods for inhibiting the formation and deposition of sulfide and silica scale in aqueous systems. In particular, the methods include injecting a composition into an aqueous system or wellbore. The composition includes a sulfide scale inhibitor and a silica scale inhibitor. The sulfide scale inhibitor may be a copolymer of acrylic acid or methacrylic acid and an anionic monomer. The silica scale inhibitor may be a copolymer of acrylic acid or methacrylic acid and an alkoxylated monomer.