Method of using biosurfactants as acid corrosion inhibitors in well treatment operations
AssigneeBaker Hughes Incorporated
InventorsStanley Gunawan, Mark A. Vorderbruggen, Charles David Armstrong
Life of this patent
Estimating the term…
Abstract
Corrosive effects arising during well treatment applications are inhibited and/or prevented by introducing into the well composition containing a corrosion inhibitor of a biosurfactant selected from glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids; polyol lipids; lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan; siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids. The composition may also contain a corrosion inhibitor intensifier.
Claims20
A method of inhibiting corrosion during a well treatment operation which comprises introducing into a well a composition comprising a corrosive inhibiting effective amount of a biosurfactant selected from the group consisting of glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids;
- polyol lipids;
- lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan;
- siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids.
A method of treating an alloy surface during a well treatment operation comprising the step of contacting the alloy surface with a treatment fluid comprising an aqueous acidic fluid and a corrosion inhibitor selected from the group consisting of glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids;
- polyol lipids;
- lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan;
- siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids, wherein reduction in corrosion of the alloy surface is greater than when the alloy surface is only contacted with the aqueous acidic fluid.
A method of inhibiting corrosion of a steel surface in contact with an acidic fluid during a well treatment operation comprising the steps of:
- (a) contacting the acidic fluid with a corrosion inhibitor selected from the group consisting of glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids;
- polyol lipids;
- lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan;
- siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids;
- and
- (b) contacting the steel surface with the acidic fluid and the corrosion inhibitor.
A composition for use in the acid treatment of wells, comprising:
- (a) a corrosion inhibitor comprising a biosurfactant selected from the group consisting of glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids;
- polyol lipids;
- lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan;
- siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids;
- and
- (b) corrosion inhibitor intensifier in an acidic solution.
Dependencies are inferred from the claim text.