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:
Jul. 18, 2023
Filed:
Jun. 30, 2021
Applicant:
Championx Usa Inc., Sugar Land, TX (US);
Inventors:
Ashish Dhawan, Saint Paul, MN (US);
Kellen Harkness, Saint Paul, MN (US);
Carter M. Silvernail, Saint Paul, MN (US);
Keith A. Monk, Saint Paul, MN (US);
Assignee:
ChampionX USA Inc., Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/03 (2006.01); C09K 8/60 (2006.01); C09K 8/68 (2006.01); C09K 8/74 (2006.01); C09K 8/035 (2006.01); C09K 8/594 (2006.01); C09K 8/588 (2006.01); E21B 33/138 (2006.01); C09K 8/467 (2006.01);
U.S. Cl.
CPC ...
C09K 8/608 (2013.01); C09K 8/035 (2013.01); C09K 8/467 (2013.01); C09K 8/588 (2013.01); C09K 8/594 (2013.01); C09K 8/68 (2013.01); C09K 8/74 (2013.01); E21B 33/138 (2013.01); C09K 2208/12 (2013.01);
Abstract
Multiple charged cationic compounds, which are derived from polyamines through an aza-Michael addition with an α, β-unsaturated carbonyl compound, in a clay treatment composition to reduces clay swelling, clay migration, and sludge formation in a subterranean formation in oil and gas operations are provided. The disclosed methods or compositions are found to be more effective than those methods or compositions commonly used for reducing clay swelling, clay migration, and sludge formation.