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US 12,753,338 B2Granted
Corrosion inhibition compositions and methods of use in sour environments
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsNayef M. Alanazi, Muhammad Imran Ul-haq, Ime Bassey Obot, Ahmad A. Sorour
Life of this patent
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Abstract
The disclosure relates to corrosion inhibition compositions and methods of using such compositions to inhibit corrosion in a sour environment. The compositions and methods can be used in various settings, such as an oil and gas carrying pipeline and/or a component in an oil and gas facility that would handle a sour aqueous fluid.
Claims20
A corrosion inhibition composition, comprising:
- a 2-substituted benzothiazole of formula:
- where R is C1-18 alkyl, —SH, —NH2, —NH-phenyl, —OH, —C(O)H, —Si(CH3)3, —CO2H, or —C1-6 alkyl-OH;
- a cationic surfactant of formula:
- where n=12, 14, 16 or 18;
- an ammonium salt selected from the group consisting of ammonium chloride, ammonium bromide, ammonium iodine, ammonium thiocaytanate, ammonium carbonate, and ammonium sulphate;
- a glycol;
- and
- a solvent that comprises water.
5 more elements
A method of using a corrosion inhibition composition, the method comprising:
- disposing the corrosion inhibition composition into a first liquid comprising hydrogen sulfide, thereby forming a second liquid;
- and
- contacting the second liquid with a member selected from the group consisting of an oil and gas carrying pipeline, a crude producing facility, and a crude processing facility, thereby inhibition corrosion of the member,
- wherein the corrosion inhibition composition comprises:
- a 2-substituted benzothiazole of formula:
- where R is C1-18 alkyl, —SH, —NH2, —NH-phenyl, —OH, —C(O)H, —Si(CH3)3, —CO2H, or —C1-6 alkyl-OH;
- a cationic surfactant of formula:
- where n=12, 14, 16 or 18;
- an ammonium salt;
- a glycol;
- and
- a solvent that comprises water.
9 more elements
A corrosion inhibition composition, comprising:
- a 2-substituted benzothiazole of formula:
- where R is C1-18 alkyl, —SH, —NH2, —NH-phenyl, —OH, —C(O)H, —Si(CH3)3, —CO2H, or —C1-6 alkyl-OH;
- a cationic surfactant of formula:
- where n=12, 14, 16 or 18;
- an ammonium salt;
- a glycol;
- and
- a solvent that comprises water,
- wherein the water comprises a member selected from the group consisting of hydrogen sulfide, bisulfide (HS−), and sulfide (S2−).
6 more elements
Dependencies are inferred from the claim text.