Corrosion inhibitor for acid stimulation systems
AssigneeBaker Hughes Incorporated
InventorMichael L. Walker
Life of this patent
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Abstract
An oil well being subjected to an acid stimulation may be treated with a corrosion inhibitor including an Ammonium Iodide Ion Source, a first carbonyl containing compound having a general formula: and a second carbonyl containing compound having the general formula: wherein R1 is an alkyl or aromatic group, R2 is a hydrogen, alkyl or aromatic group, and R3 is a hydrogen or an alkyl group having from 1 to 6 carbons; and wherein the alkyl or aromatic groups of R1, R2, or R3 may further comprise a nitrogen, phosphorous, halogen or second oxygen moiety; and wherein the oil well being treated has zone being treated at a temperature of from about 90 to about 500° F.
Claims3
A method of acidizing an oil well comprising employing a corrosion inhibitor before, during or after an acid stimulation of the oil well, the corrosion inhibitor comprising:
- an Ammonium Iodide Ion Source;
- a first carbonyl containing compound selected from the group consisting of ethyl butyrate, cinnamaldehyde, benzaldehyde, and combinations thereof;
- and a second carbonyl containing compound selected from the group consisting of acetaldehyde, formaldehyde, and combinations thereof;
- and wherein the first carbonyl containing compound and the second carbonyl containing compounds are different.
A method of acidizing an oil well comprising employing a corrosion inhibitor before, during or after an acid stimulation of the oil well, the corrosion inhibitor comprising:
- an Ammonium Iodide Ion Source;
- a first carbonyl containing compound selected from the group consisting of ethyl butyrate, cinnamaldehyde, benzaldehyde, and combinations thereof;
- and a second carbonyl containing compound selected from the group consisting of acetaldehyde, formaldehyde, and combinations thereof;
- and wherein the first carbonyl containing compound and the second carbonyl containing compounds are different;
- and wherein the oil well has a zone being treated at a temperature of from about 90 to about 500° F.
Dependencies are inferred from the claim text.