Foot valve for pumping wells

Details Foot valve for pumping wells Foot valve for pumping wells

1987-08-17

1988-10-11

Massie, Jerome W.

Wells

Processes

Producing the well

166373, 166108, 417448, E21B 4300, F04B 700

Patent

active

047764015

ABSTRACT:
Methods of and apparatus for plugging a well below a rod pump to permit bleeding off the pressure thereabove so that the pump can be removed from the well for replacement or repairs and reinstalled for further pumping operations, the pump being connected to a valve mechanism in the well in a manner which permits the valve to be closed as a result of lifting the pump, this connection being releasable to permit the pump to be pulled free of the valve and withdrawn from the well after the well pressure has been bled from above the closed valve. When the pump is installed again, the pump automatically reconnects to the valve. This invention is particularly useful in wells which are stimulated by the injection of steam.

REFERENCES:
patent: 233549 (1880-10-01), Rose
patent: 1832323 (1931-11-01), Rigby
patent: 2180605 (1939-11-01), Otis
patent: 2189703 (1940-02-01), Burt et al.
patent: 2384192 (1945-09-01), Otis et al.
patent: 4286663 (1981-09-01), Mittle
patent: 4662831 (1987-05-01), Bennett

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