Wells – Valves – closures or changeable restrictors – Fluid operated
Patent
1991-04-01
1993-02-02
Melius, Terry Lee
Wells
Valves, closures or changeable restrictors
Fluid operated
166332, E21B 3410
Patent
active
051831147
ABSTRACT:
Disclosed is a sliding sleeve valve and a selective pressure operated shifting tool engageable in the selected sleeve valve for shifting the valve sleeve between open and closed positions. The sleeve valve is connectible in a well conduit and is especially useful in highly deviated and horizontal wells. The sleeve valve has a longitudinal flow passage through, centralizers for centralizing the valve in well conduits, longitudinal flow slots on the valve body and ports connecting the flow slots and flow passage. The pressure operated shifting tool is connected to reeled tubing by a quick disconnect. The shifting tool includes an invertible shifting module which may be inverted to shift the valve sleeve to closed or open position. The shifting tool keys are locked retracted for running and on complete shifting of the sleeve are automatically released from the valve sleeve and returned to locked retracted position for retrieving. Complete shifting of the sleeve is signaled by circulation down reeled tubing back to surface. The shifting tool also includes a section which may be operated to retract and release the shifting tool keys from the valve sleeve if the sleeve is not completely shifted.
REFERENCES:
patent: 3051243 (1962-08-01), Grimmer
patent: 3211232 (1965-10-01), Grimmer
patent: 3552718 (1971-01-01), Schwegman
patent: 4603740 (1986-08-01), Edwards et al.
patent: 4917191 (1990-04-01), Hopman et al.
patent: 4928770 (1990-05-01), Murray
patent: 4928772 (1990-05-01), Hopman
patent: 4979561 (1990-12-01), Szarka
"Operation and Utilization of Hydraulic-Actuated Service Tools for Reeled Tubing" by Fowler, Jr. and Pleasants, Society of Petroleum Engineers paper SPE 20678, Sep. 23, 1990.
Hammett Robert C.
Mashaw, Jr. Howard R.
Cox Roland O.
Melius Terry Lee
Otis Engineering Corporation
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