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US 11,597,868 B2Granted
Composition for remediating iron sulfide in oilfield production systems
AssigneeChampionX USA Inc.
InventorsBrian Michael Bennett, Kim R. Solomon, Carter Silvernail, Ana Ferrer Carrera
Life of this patent
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Abstract
A composition for inhibiting corrosion and/or removing hydrocarbonaceous deposits in oil and gas applications is provided. The composition comprises an iron sulfide dissolver, an organic solvent, and a corrosion inhibitor.
Claims21
A method of inhibiting corrosion at a surface and removing hydrocarbonaceous deposits from the surface, the method comprising:
- continuously adding an iron sulfide dissolver to a fluid which contacts a surface of a wellbore or equipment used in production, processing, transportation, storage or separation of the fluid to inhibit corrosion and/or remove hydrocarbonaceous deposits from the surface,
- the iron sulfide dissolver comprising allaric acid, altaric acid, altraric acid, altronic acid, arabinaric acid, arabinonic acid, dihomocitric acid, fructuronic acid, fuconic acid, galactaric acid, galactonic acid, galacturonic acid, glucaric acid, glucoheptonic acid, gluconic acid, glucuronic acid, gulonic acid, homocitric acid, homoisocitric acid, idaric acid, idonic acid, iduronic acid, isocitric acid, mannaric acid, mannonic acid, octulosonic acid, rhamnonic acid, ribonic acid, tagaturonic acid, xylonic acid, or xyluronic acid, or a salt or derivative thereof, or a combination thereof;
- the fluid comprising natural gas or a liquid hydrocarbon;
- and
- wherein the iron sulfide dissolver inhibits iron sulfide formation on the surface during use of the wellbore or the equipment.
2 more elements
A method of inhibiting corrosion at a surface and removing hydrocarbonaceous deposits from the surface, the method comprising:
- continuously adding an iron sulfide dissolver to a fluid which contacts a surface of a wellbore or equipment used in production, processing, transportation, storage or separation of the fluid to inhibit corrosion and/or remove hydrocarbonaceous deposits from the surface,
- the iron sulfide dissolver comprising allaric acid, altaric acid, altraric acid, altronic acid, arabinaric acid, arabinonic acid, dihomocitric acid, fructuronic acid, fuconic acid, galactaric acid, galactonic acid, galacturonic acid, glucaric acid, glucoheptonic acid, gluconic acid, glucuronic acid, gulonic acid, homocitric acid, homoisocitric acid, idaric acid, idonic acid, iduronic acid, isocitric acid, mannaric acid, mannonic acid, octulosonic acid, rhamnonic acid, ribonic acid, tagaturonic acid, xylonic acid, or xyluronic acid, or a salt or derivative thereof, or a combination thereof;
- the fluid comprising natural gas or a liquid hydrocarbon;
- and
- wherein the iron sulfide dissolver dissolves iron sulfide present on the surface.
2 more elements
Dependencies are inferred from the claim text.