Exxonmobil Research and Engineering Company

Exxonmobil Technology and Engineering Company

Aruna Mohan

Mohsen Shahmirzadi Yeganeh

Anthony S Mennito

Shane Deighton

Daniel Patrick Cherney

Jessica L Vreeland

Aditya Jaishankar

An aqueous injection fluid including: a polymer comprising hydrophilic moieties and a plurality of hydrophobic groups; and a surfactant that changes shape based on salinity and/or temperature.

Formation of in-situ activated injection fluids for enhanced oil recovery applications

A method for selective extraction of naphthenic acids from an acidic crude oil, including: providing an acidic crude oil including naphthenic acids and having a total acid number (TAN) greater than 0.4; mixing the acidic crude oil with a first aqueous solution including water and a weak base to extract a portion of naphthenic acids from the acidic crude oil thereby creating a second aqueous solution containing a mixture of the portion of naphthenic acids, the water and the weak base in an emulsion; separating the second aqueous solution from the emulsion; wherein the second aqueous solution contains an additional portion of the acidic crude oil; adding a salt to the second aqueous solution, thereby causing the additional portion of the acidic crude oil to separate from the second aqueous solution; removing the additional portion of the acidic crude oil from the second aqueous solution; and extracting the portion of the naphthenic acids from the second aqueous solution.

Method for selective extraction of surfactants from crude oil

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Annandale, NJ, United States of America

Aruna Mohan