Apparatus and method for plugging voids in a ground stratum

Details Apparatus and method for plugging voids in a ground stratum Apparatus and method for plugging voids in a ground stratum

1978-01-16

1980-03-04

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166117, 166295, 175 72, 206219, 2065247, E21B 3313

Patent

active

041912543

ABSTRACT:
Apparatus and method of filling voids in a ground stratum in the vicinity of a well bore are enclosed. The apparatus is a self-contained device and, for example, it can be placed in the well bore in the vicinity of the voids to be plugged by dropping the apparatus down a drill string. Once in place it will automatically respond to the well pressure to provide the required plugging. To accomplish this the apparatus includes precursors of polymers such as precursors of polyurethanes, epoxy type polymers, polyesters or other polymers which are released from the apparatus and flow into the voids.

REFERENCES:
patent: 2761511 (1956-09-01), Billue
patent: 3153449 (1964-10-01), Lebourg
patent: 3190373 (1965-06-01), Weathersby
patent: 3271332 (1966-09-01), Bond et al.
patent: 3339716 (1967-09-01), Taylor
patent: 3340873 (1967-09-01), Solowey
patent: 3379253 (1968-04-01), Chism
patent: 3417824 (1968-12-01), Van Poollen
patent: 3637019 (1972-01-01), Lee
patent: 3739947 (1973-06-01), Baumann et al.
patent: 4083406 (1978-04-01), Metz

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