Chevron U.s.a. Inc.

David Espinosa

Varadarajan Dwarakanath

Taimur Malik

Dennis Arun Alexis

Do Hoon Kim

Hong Yang

Logan Jackson

Sukhjit Aujla

Frances Fournier

Ronald Robinson

Tom Lynch

Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

Methods for hydrocarbon recovery

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Houston, TX, United States of America

David Espinosa