Process for the detection and quantitation of corrosion and scale inhibitors in produced well fluids
AssigneeConoco Inc.
InventorsErwin Buck, John B. Sudbury
Life of this patent
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Abstract
Corrosion and scale inhibitors in fluids produced from a subterranean formation are separated, detected, and quantified by thin layer chromatography through the use of selected developing solvents and visualization reagents.
Claims18
The process which comprises detecting and quantifying a corrosion or scale inhibitor in a fluid produced form a subterranean formation by subjecting the fluid to thin layer chromatography using one or more solvents to selectively move the inhibitor form the fluid, visualizing chromatograms of the separated inhibitor and thereafter comparing the visualized inhibitor with one or more standards.
The process which comprises introducing a corrosion inhibitor into a subterranean formation, detecting and qualifying the concentration of the corrosion inhibitor in fluid produced form the subterranean formation by (a) subjecting the fluid to thin layer chromatography using one or more solvents to selectively move the inhibitor from the fluid, (b) visualizing the separated inhibitor, and (c) comparing the visualized inhibitor with one or more standards, and then using such comparison to determine when additional inhibitor is required.
The process which comprises introducing a corrosion inhibitor into a subterranean formation, detecting the concentration of the corrosion inhibitor in fluid produced form the subterranean formation by (a) subjecting the fluid to thin layer chromatography using one or more solvents to selectively move the inhibitor from the fluid and (b) visualizing the separated inhibitor, and then introducing additional inhibitor into the formation if the separated inhibitor is not visualized at a prescribed concentration.
Dependencies are inferred from the claim text.