Activation of water-in-oil emulsions of friction reducing polymers for use in saline fluids
 Friction loss in a saline liquid flowing through a conduit is reduced by combining fresh water and a water-in-oil emulsion of a water soluble friction reducing polymer, subjecting the combined material to mixing to invert the emulsion and introducing the inverted emulsion directly into the flowing saline liquid. In one aspect the water-in-oil emulsion is combined with saline water containing a surfactant to effect inversion prior to introduction of the combination into the flowing saline liquid. 
Conoco Inc.
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Y10T Y10T C09K F17D
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Fred R. Yung N.
Wiggins Lee