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. 19, 2023
Filed:
May. 08, 2019
Schlumberger Technology Corporation, Sugar Land, TX (US);
Schlumberger Norge As, Stavanger, NO;
M-i Drilling Fluids U.k. Ltd., Aberdeen, GB;
Paul Barnes, Aberdeenshire, GB;
Tore Nordvik, Sandsli, NO;
Trevor Lloyd Hughes, Cambridge, GB;
Lynne Patricia Crawford, Essex, GB;
Evgeny Barmatov, Cambridge, GB;
CAMERON INTERNATIONAL CORPORATION, Houston, TX (US);
Abstract
Compositions may include a corrosion inhibitor including a heterocyclic diamine prepared from the reaction of an alkyl diamine and an aldehyde, wherein the alkyl diamine has the general formula: R4NH(CH)NHR5, where n is an integer between 3 and 6, and R4 and R5 are independently hydrogen or a C2-C30 saturated or unsaturated hydrocarbon radical. Methods may include contacting a metal surface with a corrosion inhibitor composition, wherein the corrosion inhibitor includes a heterocyclic diamine corrosion inhibitor from the reaction of an alkyl diamine and an aldehyde, wherein the alkyl diamine has the general formula: R4NH(CH)NHR5, where n is an integer between 3 and 6, and R4 and R5 are independently hydrogen or a C2-C30 saturated or unsaturated hydrocarbon radical.