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Compositions for oil recovery and methods of their use
US8973668B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8973668-B2 |
| Application number | US-201414478491-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 5, 2014 |
| Priority date | Oct 15, 2008 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Embodiments of the present disclosure include compositions for use in enhanced oil recovery, and methods of using the compositions for recovering oil. Compositions of the present disclosure include a nonionic, non-emulsifying surfactant having a CO 2 -philicity in a range of about 1.5 to about 5.0, carbon dioxide in a liquid phase or supercritical phase, and water, where the nonionic, non-emulsifying surfactant promotes a formation of a stable foam formed of carbon dioxide and water.
First claim
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What is claimed: 1. A method for recovering oil from a reservoir formation that is penetrated by at least one injection well and one production well, comprising: selecting a nonionic, non-emulsifying surfactant having a CO 2 -philicity in a range of about 1.5 to about 5.0, where the nonionic, non-emulsifying surfactant has a formula: RO—(CR 1 R 2 CR 3 R 4 O) x (C 2 H 4 O) y —H where R is selected from the group of branched alkyl, cyclic alkyl, and groups having 3 to 11 ca…
Assignees
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Classifications
- C08G65/2609Primary
Chemistry & Metallurgy · mapped topic
- C09K8/584Primary
Chemistry & Metallurgy · mapped topic
Fixed Constructions · mapped topic
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- What does patent US8973668B2 cover?
- Embodiments of the present disclosure include compositions for use in enhanced oil recovery, and methods of using the compositions for recovering oil. Compositions of the present disclosure include a nonionic, non-emulsifying surfactant having a CO 2 -philicity in a range of about 1.5 to about 5.0, carbon dioxide in a liquid phase or supercritical phase, and water, where the nonionic, non-emuls…
- Who is the assignee on this patent?
- Sanders Aaron W, Johnston Keith P, Nguyen Quoc, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C08G65/2609. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2015 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).