Method of producing a homogeneous viscous well servicing...

Details Method of producing a homogeneous viscous well servicing... Method of producing a homogeneous viscous well servicing...

C - Chemistry, Metallurgy

09

K

31/26

C09K 8/20 (2006.01) C09K 8/90 (2006.01) E21B 33/12 (2006.01)

Patent

CA 1168427

-25- Abstract of the Disclosure A method of producing a thickened aqueous medium within a borehole comprising adding to the aqueous medium a first hydrophilic polymer which increases the viscosity of the medium at ambient temperature and a second hydro- philic polymer which will not appreciably increase the viscosity at ambient temperature but which increases the viscosity at elevated temperature, mixing the aqueous medium and polymers to increase the viscosity, pumping the partially viscosified medium to the desired location in the borehole and aging the partially viscosified medium sufficient to allow both of the polymers to completely hydrate.

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