Shear thickening compositions containing polyacrylic acid and po

Details Shear thickening compositions containing polyacrylic acid and po Shear thickening compositions containing polyacrylic acid and po

1985-03-14

1987-08-04

Barr, Josephine L.

Wells

Processes

Cementing, plugging or consolidating

166295, 522130, 252 8551, C09K 702, C09K 706, E21B 3313, E21B 33138

Patent

active

046839534

ABSTRACT:
The dispersed aqueous phase of a shear thickening composition, useful as a well control fluid which comprises a water-in-oil emulsion having hydratable, water-expandable hydrophillic clay, dispersed in the continuous, surfactant-containing oily phase thereof, hydratable, water-expandable hydrophillic clay, is prepared by mixing an aqueous solution of a polyacrylamide with an aqueous solution of polyacrylic acid wherein the concentration of the polymer in each separate solution used to prepare said aqueous phase is less than about 2 wt %.

REFERENCES:
patent: 3448800 (1969-06-01), Parker et al.
patent: 4128528 (1978-12-01), Frisque et al.
patent: 4173999 (1979-11-01), Messenger
patent: 4391925 (1983-07-01), Mintz et al.
patent: 4397354 (1983-08-01), Dawson et al.

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