Storm choke apparatus for submergible pumps

Details Storm choke apparatus for submergible pumps Storm choke apparatus for submergible pumps

1975-09-24

1977-05-03

Raduazo, Henry F.

Rotary kinetic fluid motors or pumps

Including working fluid force responsive vane or flow control

Upstream of runner

417424, 166325, 415158, F04D 2500

Patent

active

040211371

ABSTRACT:
A choke valve (safety valve) is provided in association with a submergible pump employed in oil wells or the like to prevent the flow of well fluid toward the well head when the pump is not operating. Differential pressure across the pump is employed to open the valve, and the valve closes automatically when the pump is de-energized. Bottom-hole pressure merely closes the valve more tightly. A reciprocating tapered valve member controls the opening and closing of a longitudinal passage through a tubular valve housing, the differential pump pressure being applied across an annular piston reciprocating in an annular chamber surrounding the longitudinal passage and connected to the valve member by a plurality of longitudinal piston rods, springs surrounding the piston rods biasing the valve member to a closed position. The storm choke can be operated by fluid pressure applied from the earth's surface in order to permit "killing the well" or flushing sand from the choke.

REFERENCES:
patent: 540003 (1895-05-01), Reed
patent: 2848053 (1958-08-01), Curry
patent: 3246606 (1966-04-01), Nielsen
patent: 3658440 (1972-04-01), Jackson
patent: 3672795 (1972-06-01), Arutunoff et al.
patent: 3807894 (1974-04-01), O'Rourke

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