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US 2003/0188864 A1Published application
Recovery composition and method
OwnerEdward L. Boudreauinventor
Life of this patent
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Abstract
A method and composition are described for improving recovery of oil from an oil reservoir. The method includes adding an effective amount of a fatty acid alkyl ester oil recovery composition to an oil reservoir and recovering oil from the reservoir. The composition may include in predominant proportion a fatty acid alkyl ester as well as effective concentrations of a surfactant, a colloid, and an acid. One exemplary composition includes 96% soy methyl ester, 3% surfactant, and 1% vinegar.
Claims29
A method comprising:
- adding an effective amount of a recovery composition comprising a fatty acid alkyl ester, at least one of a surfactant and a colloid, and an acid to an oil reservoir;
- and
- removing oil from the oil reservoir.
A method for stimulating an oil reservoir comprising:
- shutting down a production well;
- adding an effective amount of a recovery composition comprising a fatty acid alkyl ester, at least one of a surfactant and a colloid, and an acid to the oil reservoir via the production well casing after shutting down the production well;
- and
- adding an effective amount of steam to the oil reservoir via the production well casing after adding the recovery composition.
1 more element
A method for stimulating an oil reservoir comprising:
- shutting down a steam line;
- adding an effective amount of a recovery composition containing a fatty acid alkyl ester and a colloid to the oil reservoir via the steam line after shutting down the steam line;
- and
- adding an effective amount of steam to the oil reservoir via the steam line casing after adding the recovery composition.
1 more element
A composition comprising:
- a fatty acid alkyl ester;
- at least one of a surfactant and a colloid;
- and
- an acid.
1 more element
Dependencies are inferred from the claim text.