3m Innovative Properties Company

George Gi Moore

Thomas P Klun

Zai-Ming Qiu

Jimmie Rae Baran, Jr

John Charles Clark

Alan R Kirk

Michael S Terrazas

Gregory D Clark

Method of treating a hydrocarbon-bearing formation having brine and treated hydrocarbon-bearing formations. The method includes contacting a hydrocarbon-bearing formation with a composition comprising solvent and a polymer. The polymer comprises divalent units represented by formula: (formula I); and a plurality of alkyleneoxy groups. In some embodiments, the solvent at least one of solubilizes or displaces the brine in the formation. In some embodiments, the solvent includes at least one of a polyol or polyol ether independently having from 2 to 25 carbon atoms and at least one of water, a monohydroxy alcohol, an ether, or a ketone, wherein the monohydroxy alcohol, the ether, and the ketone each independently have up to 4 carbon atoms. Hydrocarbon-bearing formations and proppants treated with the polymer are also disclosed.

Methods for treating hydrocarbon-bearing formations having brine

A process for preparing fluorochemical monoisocyanates comprises reacting at least one fluorochemical alcohol represented by the formula CFSONCH(CH)OH, wherein n=2 to 5, and m=2 to 4, with 4,4'-diphenylmethane diisocyanate (MDI) in a solvent in which the resulting fluorochemical monoisocyanate is not soluble; wherein the molar ratio of fluorochemical alcohol:MDI is from about 1:1 to about 1:2.5.

Process for preparing fluorochemical monoisocyanates

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Afton, MN, United States of America

George Gi Moore