Plugging wellbores

Details Plugging wellbores Plugging wellbores

1982-06-28

1984-10-09

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

175 72, 252 85A, 252 85P, 252 85LC, 523130, C08K 501, C08K 534, C08L 2300, E21B 33138

Patent

active

044755945

ABSTRACT:
A process for plugging a porous area of well bore which comprises pumping a shear thickening composition into the well under conditions of low shear to the portion of the well bore desired to be plugged at which point subjected to high shear to form a paste which plugs or seals the porous area. The shear thickening composition comprises a water-in-oil emulsion having granular bentonite dispersed in the oily phase, said oily phase having both an oil soluble amine and a polyamine derivative surfactant dissolved therein. The aqueous phase will preferably comprises a polyacrylamide solution. This process may be used for plugging wells having depths in excess of 8,000 feet.

REFERENCES:
patent: 2836555 (1958-05-01), Armentrout
patent: 2890169 (1959-06-01), Prokop
patent: 3082823 (1963-03-01), Hoover
patent: 3172892 (1965-03-01), Le Suer et al.
patent: 3275075 (1966-09-01), Gogarty et al.
patent: 3448800 (1969-06-01), Parker et al.
patent: 3909421 (1975-09-01), Gaddis
patent: 4128598 (1978-12-01), Makino et al.
patent: 4173540 (1979-11-01), Lonstrup et al.
patent: 4391925 (1983-07-01), Mintz et al.
patent: 4397354 (1983-08-01), Dawson et al.

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