Ecolab USA Inc.

Nalco Company

Fenfen Huang

Duy T Nguyen

A composition comprising an alcohol ether sulfonate is provided for use in methods of removing a fluid from a subterranean hydrocarbon-containing formation.

Foam assisted liquid removal using alcohol ether sulfonates

Disclosed herein are methods of recovering a low molecular weight alcohol or alcohol containing fluid in natural gas and oil production and transmission. Disclosed herein are also methods of recovering hydrocarbon fluid from a well, using fluids comprising an effective foam-forming amount of a fluorosurfactant compound.

Foamers for liquid removal

A method of foaming a fluid for recovering gas from a gas well and enhancing oil production from a gas-lifted oil well penetrating a subterranean oil-bearing formation is disclosed and claimed. The method includes introducing into the fluid a foam-forming amount of a composition comprising at least one compound selected from the following: Xalkyl benzene sulfonate; Xalkylnapthalene sulfonate; alkyldiphenyloxide disulfonate; diallyldiphenyloxide disulfonate; Xalkyl sulfate; naphthalene sulfonate formaldehyde condensate; and combinations thereof. The method of invention further provides foamers that are compatible with a reverse osmosis membrane.

Foamers for downhole injection

A method of foaming a fluid for recovering gas from a gas well and enhancing oil production from a gas-lifted oil well penetrating a subterranean oil-bearing formation is disclosed and claimed. The method includes introducing into the fluid a foam-forming amount of a composition comprising at least one compound having the general formula: Ris selected from a saturated linear or branched alkyl, an unsaturated linear or branched alkyl, a substituted naphthalene, a substituted benzene, a natural oil, and a natural oil derivative. Ris a C-Calkyl. R, R, and Rare independently selected from trimethyl, triethyl, diethyl, monoethyl, benzyl dimethyl, and benzyl diethyl. X is selected from hydrogen, methyl, and ethyl. Zis a negatively charged counterion.

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Sugar Land, TX, United States of America

Fenfen Huang