Use of radication-induced polymers as friction reducing agents

Details Use of radication-induced polymers as friction reducing agents Use of radication-induced polymers as friction reducing agents

C - Chemistry, Metallurgy

08

J

196/68, 204/91.5

C08J 3/28 (2006.01) C08F 2/46 (2006.01) C08F 2/54 (2006.01) C08F 20/56 (2006.01) F17D 1/16 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01)

Patent

CA 1084869

ABSTRACT OF THE DISCLOSURE Drag reduction of fluids containing a water phase, e.g. hydrocarbon-in-water mixture, flowing through a conduit, is reduced by incorporating within the water phase a polymer obtained by radiation-induced polymerization of acrylamide, methacrylamide, acrylic acid, methacrylic acid, alkali metal salts thereof, or mixtures thereof. The polymerization is preferably carried out in 10-60% aqueous monomer solution with gamma radiation. The mixture of monomers, before radiation, preferably contains 25-99% acrylamide and 75-1% sodium acrylate. The polymer preferably shows viscoelastic effects at high concentrations in a solvent. Concentrations of about 1-10,000 ppm of the polymer in the water phase is desired. Examples of fluids useful with this invention include hydrocarbon-in-water and water-in-hydrocarbon slurries, the hydrocarbon is preferably comminuted oil shale or coal, congealed particles of crude oil and/or wax, viscous crude oil, etc.

290380

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