Rohm and Haas Company

Dow Global Technolgoies LLC

Peter M Rozowski

Wanglin Yu

Joseph Manna

Somil Chandrakant Mehta

Joydeep Mukherjee

Susan K Falcone-Potts

Claribel Acevedo Velez

Norman Edward Byrne

Supriyo Das

Mukherjee Joydeep

Das Supriyo

Yu Wanglin

A method for recovering oil from an oil bearing formation including the steps of: i) recovering an oil-water mixture from the oil-bearing formation; ii) separating at least a portion of the oil from the oil-water mixture to form a produced water; iii) adding a polymeric alkylene oxide surfactant having a Mw of less than 10000 Da to the produced water; iv) passing the produced water through a polymeric membrane to form a permeate stream and a retentate stream; and v) injecting the permeate stream into the oil bearing formation.

Filtration and reuse of surfactant-containing produced water for oil recovery

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using anionic polymers. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the anionic polymers. The anionic polymers comprise: A) 2-80% by weight of at least one C-C&#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid monomer; B) 15-80% by weight of at least one nonionic, copolymerizable &#x3b1;,&#x3b2;-ethylenically unsaturated monomer; C) 1-50% by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable &#x3b1;,&#x3b2;-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5% by weight of at least one crosslinker.

Polymers as additives for the separation of oil and water phases in emulsions and dispersions

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Bellaire, TX, United States of America

Peter M Rozowski