Delivery of polymeric antiprecipitants in oil wells...

Details Delivery of polymeric antiprecipitants in oil wells... Delivery of polymeric antiprecipitants in oil wells...

C - Chemistry, Metallurgy

09

K

31/21

C09K 8/528 (2006.01) C09K 8/54 (2006.01) C09K 8/78 (2006.01)

Patent

CA 1163429

ABSTRACT A method of treating an oil well to inhibit precipitation of salts in brine associated with oil in oil producing formation surrounding the well comprising pumping into said oil well a water-in-oil emulsion consisting of water, a polymeric antiprecipitant having a molecular weight in the range of 500 - 25,000 and a mixture of two or more surfactants having an HLB value of between 5 and 12.

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