Wellhead hydraulic drive unit

Details Wellhead hydraulic drive unit Wellhead hydraulic drive unit

2005-02-15

2005-02-15

Dang, Hoang (Department: 3672)

Wells

With below and above ground modification

Eduction pump or plunger in well

C166S077400

Reexamination Certificate

active

06854515

ABSTRACT:
The present invention provides a wellhead hydraulic drive unit to operate various styles of downhole pumps, which is installed as an integral part of a wellhead thereby eliminating the need for a stuffing box. The wellhead hydraulic drive unit comprises a hollow hydraulic cylinder having a piston positioned therein, a hydraulic fluid supply attached to the hydraulic cylinder for raising the piston within the hydraulic cylinder, a hollow ram slideably received within the inner wall of the hydraulic cylinder and connected to the piston for reciprocation in response to the piston; and a production tube inserted through the ram for enabling well fluid to be discharged from the well.

REFERENCES:
patent: 2159526 (1939-05-01), Humason
patent: 3051237 (1962-08-01), Corley, Jr. et al.
patent: 4305461 (1981-12-01), Meyer
patent: 4432706 (1984-02-01), Gilbertson
patent: 4462464 (1984-07-01), Brown et al.
patent: 4745969 (1988-05-01), Henderson
patent: 4781543 (1988-11-01), Sommer et al.
patent: 4991650 (1991-02-01), McLeod
patent: 5800063 (1998-09-01), Stanley
patent: 20030066656 (2003-04-01), Hughes et al.

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