Patent · US Active

Corrosion inhibitors for drilling fluid brines

US10094203B2 · kind B2 · utility

0Cited by

14References

22Claims

0Family size

Assignee

CES TECHNOLOGY S.A.R.L. · LU

Inventors

Gene H. Zaid · Sterling, US
David Horton · Calgary, CA
Kim Brashear · Sterling, US

Key dates

Filing date	Oct 29, 2015
Grant date	Oct 9, 2018
Priority date	—
Expiry date	Oct 17, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2208/32
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Improved corrosion inhibitors for well brines include a phosphonate or salts thereof, and a gluconic acid or salts thereof. The inhibitors are normally injected downhole into the brines. The most preferred phosphonates are amine polyphosphonates, used in combination with alkali metal salts of gluconic acid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.