Energy Solutions (us) LLC

Rhodia Operations

Zhenxing Cheng

Zhihua Zhang

Chee Fei Chin

Qi Qu

Hoang Van Le

David James Wilson

Stanley Gunawan

Man Hua Chen

Shaopeng Zhang

Ahmed Rabie

Igor Pimkov

Provided are methods for modifying the permeability of subterranean formations for the purposes of selectively reducing excessive production of water and aqueous fluids in oil and gas wells, wherein the methods utilize an emulsion containing a copolymer, which is typically prepared in an aqueous salt media.

Method for controlling production of excessive water and aqueous fluids in oil and gas wells

Water-in-oil emulsions are provided that include an alkyl propylene diamine and an ethoxylated alcohol as the inverting surfactant, which is present in an amount less than 5 percent by weight of the water-in-oil emulsion.

Inverting surfactants for inverse emulsions

A polymer dispersion may include a water soluble copolymer, a water soluble salt, a polyol, and water. A method of preparing a polymer dispersion may include controlled radical polymerization. A method of using the polymer dispersion as a friction reducer in oil field processes.

Polymer dispersion by controlled radical polymerization

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Shanghai, China

Zhenxing Cheng