Ecofriendly emulsifier synthesis from esterified waste vegetable oil for wellbore drilling fluids
US-10385254-B2 · Aug 20, 2019 · US
Green corrosion inhibitor from waste vegetable oil for oil and gas applications
US11866664B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11866664-B2 |
| Application number | US-202117344863-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 10, 2021 |
| Priority date | Jun 10, 2021 |
| Publication date | Jan 9, 2024 |
| Grant date | Jan 9, 2024 |
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- Title
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Abstract
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An ecofriendly corrosion inhibitor composition and a method for inhibiting corrosion on a metal surface with the ecofriendly corrosion inhibitor composition are provided. The ecofriendly corrosion inhibitor composition includes 10-30 weight % of fatty acids derived from waste vegetable oils and 70-90 weight % of heavy aromatic naphtha. The fatty acids derived from waste vegetable oils include oleic acid, linoleic acid, and palmitic acid. In the method, the ecofriendly corrosion inhibitor composition is added to a hydrocarbon fluid exposed to the metal surface and the corrosion inhibitor composition inhibits corrosion on the metal surfaces.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for inhibiting corrosion on a metal surface, the method comprising: adding an ecofriendly corrosion inhibitor composition to a hydrocarbon fluid exposed to the metal surface, wherein the corrosion inhibitor composition comprises: 20 weight % of fatty acids derived from waste vegetable oils, wherein the fatty acids comprise approximately 60-70 weight % of oleic acid, approximately 10-20 weight % of linoleic acid, and approximately 5-10 weight % of palmitic acid; and 80 weight % of heavy aromatic naphtha (HAN), wherein the corrosion inhibitor composition inhibits corrosion on metal surfaces. 2. The method of claim 1 , wherein the ecofriendly corrosion inhibitor composition is added to the hydrocarbon fluid in a concentration of approximately 10 ppm to approximately 500 ppm. 3. The method of claim 2 , wherein the ecofriendly corrosion inhibitor composition is added to the hydrocarbon fluid in a concentration of approximately 200 ppm. 4. The method of claim 1 , wherein the ecofriendly corrosion inhibitor composition is free of nitrogen compounds. 5. The method of claim 1 , wherein the corrosion is caused by carbon dioxide gas or hydrogen sulfide gas. 6. The method of claim 1 , wherein the corrosion is caused by naphthenic acid. 7. The method of claim 1 , wherein the fatty acids are converted from the waste vegetable oils via base hydrolysis with methanol and subsequent base hydrolysis with NaOH in water.
Assignees
Inventors
Classifications
- C10G75/02Primary
by addition of corrosion inhibitors · CPC title
Compositions for in situ inhibition of corrosion in boreholes or wells · CPC title
Anticorrosion additives · CPC title
Limiting deterioration of equipment · CPC title
Organic additives · CPC title
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- What does patent US11866664B2 cover?
- An ecofriendly corrosion inhibitor composition and a method for inhibiting corrosion on a metal surface with the ecofriendly corrosion inhibitor composition are provided. The ecofriendly corrosion inhibitor composition includes 10-30 weight % of fatty acids derived from waste vegetable oils and 70-90 weight % of heavy aromatic naphtha. The fatty acids derived from waste vegetable oils include o…
- Who is the assignee on this patent?
- Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C10G75/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 09 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).