Isp Investments Inc.

Robert Gibbison

Sarah Orton

Andrew Mint

Edward H Johnson

A method of removing contaminants from produced water of an oil or gas well comprising the step of contacting the produced water with polyvinylpolypyrrolidone (PVPP) to remove the contaminants from the water.

Method of using polyvinypolypyrrolidone to remove contaminants from produced water of an oil or gas well

In accordance with the present invention there is provided a method of removing acidic and/or aromatic contaminants, such as benzene, xylene, toluene, phenols and polyphenols, from produced water of an oil or gas well. The method comprises the step of contacting the produced water with polyvinylpolypyrrolidone (PVPP) to remove the contaminants from said water.

Use of PVPP to remove contaminants from produced water of an oil or gas well

A method of shale inhibition comprises adding a two-phase polymer system of a water soluble copolymer of vinyl pyrrolidone and dimethylaminopropyl methacrylamide and in-situ formed water-insoluble particles of said copolymer, or, alternatively, a water-soluble copolymer of methylvinyl ether and maleic anhydride, into a drilling well fluid under aqueous, high temperature, high salinity conditions.

Shale inhibition

An inkjet-receptive coating composition for efficacious inkjet printing which is a synergistic composition of swellable, water-insoluble polyvinylpolypyrrolidone particles and (fumed) silica or silica gel particles.

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Kent, United Kingdom

Robert Gibbison