Method and apparatus for isolating and treating subsurface strat

Details Method and apparatus for isolating and treating subsurface strat Method and apparatus for isolating and treating subsurface strat

1977-10-17

1978-11-14

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166 57, 166281, 166302, E21B 33138, E21B 4327

Patent

active

041251598

ABSTRACT:
This invention relates to method and apparatus for isolating and treating one of a plurality of selected zones located downhole in a borehole by freezing spaced-apart portions of the formation so that the zone to be treated is located therebetween. Treatment fluid is pumped down the apparatus of the present invention and out into the zone to be treated, with the spaced-apart, frozen portions of the formation effectively isolating the remainder of the wellbore from the treatment zone.

REFERENCES:
patent: 1342780 (1920-06-01), Vedder
patent: 1342781 (1920-06-01), Vedder
patent: 2033560 (1936-03-01), Wells
patent: 2033561 (1936-03-01), Wells
patent: 3194315 (1965-07-01), Rogers
patent: 3301326 (1967-01-01), McNamer
patent: 3738424 (1973-06-01), Osmun et al.
patent: 3815957 (1974-06-01), Spedden et al.
patent: 3871448 (1975-03-01), Vann et al.
patent: 3885629 (1975-05-01), Erb

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