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US 10,519,360 B2Granted
Liquid inhibitor composition and a method for its preparation and application as a heavy brine corrosion control
AssigneeClariant International Ltd.
InventorsNihal U. Obeyesekere, Thenuka Ariyaratna, Jonathan James Wylde
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Abstract
A composition useful as corrosion inhibitor formulation for application in heavy brine systems, comprising at least one amidoamine; at least one sulfur synergist; at least one phosphate ester. In a preferred embodiment, the composition comprises additionally formulation bonding surfactant; and/or at least one solvent system.
Claims28
A process for inhibiting corrosion in a heavy brine having a density of 1.15 to 2.65 g/cm3, comprising the step of adding a composition comprising
- at least one amidoamine,
- at least one sulfur synergist, and
- at least one phosphate ester, to the heavy brine having a density of 1.15 to 2.65 g/cm3
- wherein the at least one amidoamine corresponds to formula IV
- wherein
- R is —H, —C2H4NH2, —C2H4OH, —(C2H4NH)x—C2H4NH2,
- x is a number from 0 to 200
- R1 is a C3 to C29 aliphatic hydrocarbon group.
5 more elements
Dependencies are inferred from the claim text.