Solenoid operated tubing safety valve

Details Solenoid operated tubing safety valve Solenoid operated tubing safety valve

1977-11-07

1979-07-17

Purser, Ernest R.

Wells

With electrical means

166 53, 166332, 251139, E21B 4312

Patent

active

041612159

ABSTRACT:
A wireline retrievable, subsurface tubing safety valve that is opened and held open by the transmission of electric current from the surface. Interruption of the current supply results in automatic closure of the valve. The device includes a pressure equalizing valve which enables the valve to be opened against a high differential pressure.

REFERENCES:
patent: 3125321 (1964-03-01), Domelen
patent: 3178151 (1965-04-01), Caldwell
patent: 3731742 (1973-05-01), Sizer et al.
patent: 3762683 (1973-10-01), Sangl

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