Valving system for a downhole hydraulically actuated pump

Details Valving system for a downhole hydraulically actuated pump Valving system for a downhole hydraulically actuated pump

2005-09-27

2005-09-27

Thorpe, Timothy S. (Department: 3746)

Pumps

Motor driven

Fluid motor

C417S392000, C091S287000, C091S352000, C166S068000

Reexamination Certificate

active

06948917

ABSTRACT:
An engine for actuating a hydraulic downhole pump having a piston vertically reciprocated in a cylinder includes a reversing valve carried with the power piston and serving, when in a first position, to direct fluid flow to force the piston upwardly and in a second position to provide bypass fluid flow to cause the piston to move downwardly. A pilot valve carried by the power piston and serving, when in a lower position, to direct fluid flow to move the reversing valve from the first to the second position. A probe is configured to move the pilot valve to the lower position when the piston reaches an upper limit of travel.

REFERENCES:
patent: 1828857 (1931-10-01), Coberly
patent: 2081223 (1937-05-01), Coberly
patent: 2631541 (1953-03-01), Dempsey
patent: 2787961 (1957-04-01), Chenault
patent: 2843046 (1958-07-01), Knowles
patent: 2921531 (1960-01-01), Brennan et al.
patent: 2949857 (1960-08-01), Coberly
patent: 3109379 (1963-11-01), English
patent: 3118382 (1964-01-01), English
patent: 3374746 (1968-03-01), Chenault
patent: 3502028 (1970-03-01), Cooper
patent: 3653786 (1972-04-01), McArthur et al.
patent: 3865516 (1975-02-01), Roeder
patent: 4076458 (1978-02-01), Jones
patent: 4202656 (1980-05-01), Roeder
patent: 4406598 (1983-09-01), Walling
patent: 4534168 (1985-08-01), Brantly
patent: 4544335 (1985-10-01), Roeder
patent: 4611974 (1986-09-01), Holland
patent: 4768589 (1988-09-01), Roeder
patent: 4925374 (1990-05-01), Carrens
patent: 5104296 (1992-04-01), Roeder
patent: 5209651 (1993-05-01), Kelleher et al.
patent: 5494102 (1996-02-01), Schulte
patent: 5651664 (1997-07-01), Hinds et al.
patent: 5667364 (1997-09-01), O Mara et al.

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