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EP-4735666-A2 - CORROSION INHIBITOR HAVING CARBON-BASED NANOPARTICLES

EP4735666A2EP 4735666 A2EP4735666 A2EP 4735666A2EP-4735666-A2

Abstract

Corrosion inhibitor compositions that include carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents. A method includes contacting a fluid comprising the corrosion inhibitor composition with a metal surface to inhibit corrosion on the metal surface.

Inventors

  • MOLONEY, Jeremy

Assignees

  • ChampionX LLC

Dates

Publication Date
20260506
Application Date
20240628

Claims (20)

  1. 1. A corrosion inhibitor composition comprising: carbon-based nanoparticles; one or more corrosion inhibitor compounds; and one or more solvents.
  2. 2. The corrosion inhibitor composition of claim 1, wherein the carbon-based nanoparticles i) are not covalently bonded to a compound in the corrosion inhibitor composition, ii) do not react with any compound in the corrosion inhibitor composition, or both i) and ii).
  3. 3. The corrosion inhibitor composition of claim 1 , wherein the one or more corrosion inhibitor compounds comprises one or more imidazoline compounds or derivatives thereof, one or more quaternary ammonium compounds, one or more organic sulfur compounds, one or more phosphate esters, one or more monomeric or oligomeric fatty acids, one or more alkoxylated amines, or combinations thereof.
  4. 4. The corrosion inhibitor composition of claim 1 , wherein the corrosion inhibitor composition from about 1 wt% to about 99 wt% of the one or more corrosion inhibitor compounds.
  5. 5. The corrosion inhibitor composition of claim 1 , wherein the carbon-based nanoparticles comprise carbon nanotubes, carbon dots, carbon quantum dots, graphene, graphene quantum dots, graphene oxide, or combination thereof.
  6. 6. The corrosion inhibitor composition of claim 1, wherein at least one dimension of the carbon-based nanoparticles is in a range of from 1 nm to less than 1 ,000 nm.
  7. 7. The corrosion inhibitor composition of claim 1 , having from about 0.1 wt% to about 50 wt% of the carbon-based nanoparticles based on a total weight of the corrosion inhibitor composition.
  8. 8. The corrosion inhibitor composition of claim 1 , wherein the corrosion inhibitor composition comprises from about 0.1 wt% to about 1 wt% of the carbon-based nanoparticles.
  9. 9. The corrosion inhibitor composition of claim 1 8, wherein a weight ratio of the one or more corrosion inhibitor compounds to the carbon-based nanoparticles is in a range of from 10:1 to 500:1.
  10. 10. The corrosion inhibitor composition of claim 1 , wherein the one or more solvents is selected from water, alcohols, hydrocarbons, ketones, ethers, aromatics, amides, nitriles, sulfoxides, esters, glycol ethers, aqueous systems, isopropanol, methanol, ethanol, 2- ethylhexanol, heavy aromatic naphtha, toluene, ethylene glycol, ethylene glycol monobutyl ether (EGMBE), diethylene glycol monoethyl ether, xylene, brine, seawater, glycols, glycol derivatives, ketones, pentane, hexane, cyclohexane, methylcyclohexane, heptane, decane, dodecane, diesel, toluene, xylene, heavy aromatic naphtha, fatty acid derivatives, or combinations thereof.
  11. 11. The corrosion inhibitor composition of claim 1 , wherein the one or more solvents comprises xylene.
  12. 12. The corrosion inhibitor composition of claim 1 , further comprising one or more additional components selected from asphaltene inhibitors, paraffin inhibitors, scale inhibitors, emulsifiers, water clarifiers, dispersants, emulsion breakers, hydrogen sulfide scavengers, gas hydrate inhibitors, biocides, pH modifiers, surfactants, functional agents and other additives, or combinations thereof.
  13. 13. A method of inhibiting corrosion on a metal surface of an equipment, comprising: i) contacting a fluid comprising a corrosion inhibitor composition with the metal surface, wherein the corrosion inhibitor composition comprises carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents; ii) adding, introducing, or injecting the corrosion inhibitor composition into a fluid that is or will be in contact with the metal surface; or iii) both i) and ii).
  14. 14. The method of claim 13, wherein the metal surface is a carbon steel, wherein the metal surface is part of equipment used in: a production, transportation, storage, and/or separation of crude oil or natural gas; a coal-fired process; a waste-water process; a farm; a slaughter house; a land-fill; a municipality waste-water plant; a coking coal process; a biofuel process; a cooling water system for a nuclear power plant; a geothermal heating or cooling process; a desalination process; a farm; or a land-fill.
  15. 15. The method of claim 13, wherein the fluid comprises water and one or more hydrocarbons selected from crude oil, heavy oil, processed residual oil, bituminous oil, coker oils, coker gas oils, fluid catalytic cracker feeds, gas oil, naphtha, fluid catalytic cracking slurry, diesel fuel, fuel oil, jet fuel, gasoline, kerosene, or combinations thereof.
  16. 16. The method of claim 13, further comprising producing the fluid from a wellbore formed in a subterranean formation, transporting the fluid in an oil or gas pipeline, storing, or separating the fluid, prior to said contacting, introducing, adding, or injecting of the corrosion inhibitor composition.
  17. 17. The method of claim 13, wherein the corrosion inhibitor composition is present in the fluid in an amount of from 5 ppmw to 5,000 ppmw or in an amount of from 50,000 ppmw to 900,000 ppmw based upon a total weight of the fluid.
  18. 18. The method of claim 13, wherein the corrosion inhibitor composition exhibits an increase in a percentage protection against corrosion of the metal surface in comparison to an otherwise similar corrosion inhibitor composition that does not include the carbon-based nanoparticles.
  19. 19. A method of inhibiting corrosion on a metal surface of an equipment, comprising: coating a metal surface of a pipe, a pipeline, a heat exchanger, a buffer storage vessel, or a treatment vessel with a corrosion inhibitor composition comprising carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents.
  20. 20. A method comprising: transporting or moving a fluid in an oil or gas pipeline, wherein the fluid comprises water, one or more hydrocarbons, and a corrosion inhibitor composition, wherein the one or more hydrocarbons is selected from crude oil, heavy oil, processed residual oil, bituminous oil, coker oils, coker gas oils, fluid catalytic cracker feeds, gas oil, naphtha, fluid catalytic cracking slurry, diesel fuel, fuel oil, jet fuel, gasoline, kerosene, or combinations thereof, wherein the corrosion inhibitor composition comprises carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents.

Description

CORROSION INHIBITOR HAVING CARBON-BASED NANOPARTICLES FIELD OF THE DISCLOSURE [0001] The present disclosure generally relates to corrosion inhibitor compositions. BACKGROUND [0002] Oil and gas production infrastructure can include equipment (e.g., pipelines, flow lines, valves, separation equipment) that is constructed of mild carbon steel. The internal metal surfaces of the equipment are subject to corrosion, particularly for production fluid that has a high concentration of water and/or corrosive agents. Contact of the internal metal surfaces with water and/or corrosive agents can lead to corrosion, and even equipment failure. The rate of corrosion deterioration in oil and gas field equipment can depend upon production parameters such as oil/water ratio, brine composition, temperature, pH, and the concentration of corrosive agents that are present in the subterranean formation, such as CO2 and H2S. [0003] In order to preserve the integrity of oil and gas infrastructure, corrosion inhibitors can be added into the production fluid upstream of the equipment that is to be protected. For example, corrosion inhibitors can protect the metal surface of pipeline and/or equipment through formation of a passivation film on the metal surface. This passivation layer oil wets the metal surface, which in turn prevents contact of the metal surface from the corrosive agents in the produced fluids. [0004] Despite the availability of corrosion inhibitor formulations, there is ongoing effort to find improved compounds, compositions, and methods. SUMMARY [0005] Disclosed are corrosion inhibitor compositions that can include carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents. [0006] Also disclosed are methods for inhibiting corrosion of a metal surface used to contain or convey a fluid. One method can include contacting a fluid comprising the corrosion inhibitor composition as disclosed herein with the metal surface. Another method can additionally or alternatively include adding, introducing, or injecting the corrosion inhibitor composition into the fluid prior to or during contact of the fluid with the metal surface. Another method can additionally or alternatively include coating the metal surface with the corrosion inhibitor composition. [0007] Other technical features may be readily apparent to one skilled in the art from the following descriptions and claims. DETAILED DESCRIPTION [0008] The term “alkyl,” as used herein, refers to a linear or branched hydrocarbon radical, e.g., having 1 to 32 carbon atoms (i.e., 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27, 28, 39, 30, 31, or 32 carbons). Alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, iso-butyl, secondary-butyl, and tertiary-butyl. Alkyl groups may be unsubstituted or substituted by one or more suitable substituents. [0009] The term “aryl,” as used herein, means monocyclic, bicyclic, or tricyclic aromatic radicals such as phenyl, naphthyl, tetrahydronaphthyl, indanyl and the like; optionally substituted by one or more suitable substituents, e.g., 1 to 5 suitable substituents. [0010] The term “arylalkyl,” as used herein, refers to an aryl group attached to the parent molecular moiety through an alkyl group. Arylalkyl groups may be unsubstituted or substituted by one or more suitable substituents. [0011] The term “alkoxy,” as used herein, refers to an alkyl group, as defined herein, appended to the parent molecular moiety through an oxygen atom. [0012] The term “hydroxy,” as used herein, refers to an — OH group. [0013] As used herein, any recited ranges of values contemplate all values within the range including the end points of the range, and are to be construed as support for claims reciting any sub-ranges having endpoints which are real number values within the recited range. By way of example, a disclosure in this specification of a range of from 10 to 15 shall be considered to support claims to values of 10, 11 , 12, 13, 14, and 15, and to any of the following ranges: 10-11 , 10-12, 10-13, 10-14, 10-15, 11-12, 11-13, 11-14, 11-15, 12-13; 12-14, 12-15, 13-14, 13-15, and 14-15. [0014] Disclosed herein are corrosion inhibitor compositions and methods for inhibiting corrosion. CORROSION INHIBITOR COMPOSITION [0015] The corrosion inhibitor compositions generally include carbon-based nanoparticles, one or more corrosion inhibitor compounds, and one or more solvents. The carbon-based nanoparticles are generally present in the corrosion inhibitors in an effective amount for corrosion inhibition as disclosed herein. The compositions can additionally include any additional component described herein. [0016] It has been found that combining carbon-based nanoparticles with corrosion inhibitor compounds disclosed herein, and for use of the same in methods for inhibiting corrosion, increases corrosion inhibition performance in comparison