Dow Global Technolgoies LLC

Rohm and Haas Company

Martha P Hernandez

Troy E Knight

Pramod D Patil

Susan K Falcone-Potts

Aaron W Sanders

Gyongyi Gulyas

Robert J Wright

Sayeed Abbas

Amit Katiyar

David L Frattarelli

Joydeep Mukherjee

Brenna White

Eric P Ripplinger

Disclosed is a temperature stabilized aqueous wettability composition and method of use for the recovery of petroleum from subterranean formulations. Said aqueous wettability composition comprises a polyethylene oxide nonionic surfactant, a disulfonated anionic surfactant, and one or more alcohol.

Low-temperature stabilized surfactant blend for enhanced oil recovery

The present invention includes a foam-forming composition for use in enhanced oil recovery, and a method of using said foam-forming composition for recovering oil. The foam-forming composition of the present invention comprises a nonionic surfactant, in particular an alcohol-alkoxylate, and an anionic surfactant, in particular an alkyl diphenyloxide (di)sulfonate, where the foam-forming composition promotes a formation of a stable foam formed of a COand water.

Co-surfactant foam-forming composition for enhanced oil recovery

Embodiments of the present disclosure include modified nonionic surfactant formulations having a nonionic surfactant and a pour point depressant, where the modified nonionic surfactant formulations have a pour point of &#x2212;54&#xb0; C. to &#x2212;75&#xb0; C. In one or more embodiments, the modified nonionic surfactant formulations can be introduced into a flow of carbon dioxide, where the flow of carbon dioxide and the modified nonionic surfactant formulation are injected into an oil containing reservoir. In one or more embodiments, an emulsion of the carbon dioxide and the nonionic surfactant form in the oil containing reservoir, where the use of the pour point depressant provides minimal interference in forming the emulsion.

Modified nonionic surfactant formulations for enhanced oil recovery

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene; and (b) at least one peracid oxidant compound, under conditions to form a divinylarene dioxide product; wherein the peracid oxidant compound is capable of providing an increased yield of a divinylarene dioxide product.

Process for preparing divinylarene dioxides

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Richwood, TX, United States of America

Martha P Hernandez