Use of carbon dioxide soluble nonionic surfactants for enhanced crude oil recovery
US-9850421-B2 · Dec 26, 2017 · US
Foam control compositions
US9499662B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9499662-B2 |
| Application number | US-201113079804-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2011 |
| Priority date | Apr 2, 2010 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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- Title
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Abstract
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Disclosed is a method for inhibiting the formation of foam in aqueous systems by adding foam control composition including a polyoxyethylene and/or a polyoxypropylene nonionic fatty acid derivative and a quaternary ammonium surfactant.
First claim
Opening claim text (preview).
We claim: 1. A foam control composition comprising: a polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid, wherein the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid includes polyoxyethylene and polyoxypropylene units; and a quaternary ammonium surfactant, wherein a weight ratio of the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid to the quaternary ammonium surfactant is from 2:1 to 30:1, and wherein the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid is present in the foam control composition in an amount of 10 wt % to 50 wt %. 2. The foam control composition according to claim 1 , wherein: the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid is characterized by a HLB value of at least 10. 3. The foam control composition according to claim 1 , wherein: the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid is characterized by a HLB value of at least 16. 4. The foam control composition according to claim 1 , wherein: the quaternary ammonium surfactant is characterized by a quaternary function represented by the formula R 1 —N—R 2 CH 3 CH 3 wherein R 1 =C 6 H 6 and R 2 =C n H (2n+1) ; and further wherein n is an integer from 8 to 18. 5. The foam control composition of claim 1 , wherein the weight ratio of the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid to the quaternary ammonium surfactant is from 5:1 to 10:1. 6. The foam control composition of claim 1 , wherein the non-solvent components of the composition consist essentially of the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid, and the quaternary ammonium surfactant. 7. The foam control composition of claim 1 , wherein the quaternary ammonium surfactant is present in the foam control composition in an amount of from 1.67 wt % to 25 wt %. 8. A foam control composition comprising: a fatty amine derived from a fatty acid component selected from a polyoxyethylene non-ionic fatty amine derived from a fatty acid, a polyoxypropylene non-ionic fatty amine derived from a fatty acid, or a polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid, wherein the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid includes polyoxyethylene and polyoxypropylene units; and a quaternary ammonium surfactant, wherein a weight ratio of the fatty amine derived from a fatty acid component to the quaternary ammonium surfactant is from 2:1 to 30:1, and wherein the polyoxyethylene-polyoxypropylene non-ionic fatty amine derived from a fatty acid is present in the foam control composition in an amount of 10 wt % to 50 wt %. 9. The foam control composition of claim 8 , wherein the fatty amine derived from a fatty acid component is an oleyl amine derivative. 10. The foam control composition of claim 8 , wherein the weight ratio of the fatty amine derived from a fatty acid component to the quaternary ammonium surfactant is from 5:1 to 10:1. 11. The foam control composition of claim 8 , wherein the quaternary ammonium surfactant is present in the foam control composition in an amount of from 1.67 wt % to 25 wt %.
Assignees
Inventors
Classifications
- C08G65/2624Primary
containing aliphatic amine groups · CPC title
compounds containing N-atoms · CPC title
by addition of chemical substances · CPC title
Polyalkylene oxides · CPC title
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Frequently asked questions
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- What does patent US9499662B2 cover?
- Disclosed is a method for inhibiting the formation of foam in aqueous systems by adding foam control composition including a polyoxyethylene and/or a polyoxypropylene nonionic fatty acid derivative and a quaternary ammonium surfactant.
- Who is the assignee on this patent?
- Richardson John, Puchovich Mark, Djukanovic Vladimir, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08G65/2624. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 22 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).