Oil field corrosion inhibition
AssigneeWestvaco Corporation
InventorsDavid E. Knox, Eugene R. Fischer
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Abstract
An inhibitor formulation including the product obtained by reacting maleic anhydride or fumaric acid with fatty acids containing unsaturation in the presence of a suitable catalyst, such as iodine, clay, or silica, is disclosed to provide improved corrosion inhibition in oil field equipment and piping over conventional dimer/trimier based inhibitor formulations.
Claims9
A method for inhibiting corrosion in downwell oil field equipment and piping which is in contact with an oil/water medium taken from a producing well by coating said equipment and piping with a formulation including a reaction product of C.sub.18 unsaturated fatty acids and a compound selected from the group consisting of maleic anhydride and fumaric acid, wherein said product is selected from the group consisting of a fatty acid Diels-Alder adduct and a fatty acid-ene reaction product, wherein the formulation is added to said oil/water medium.
Dependencies are inferred from the claim text.