Oilfield stuffing box

Details Oilfield stuffing box Oilfield stuffing box

2011-04-19

2011-04-19

Neuder, William P (Department: 3672)

Wells

Above ground apparatus

With tube rotating means

C166S084100, C166S084300, C166S084400

Reexamination Certificate

active

07926559

ABSTRACT:
A stuffing box (10) is provided for sealing with a rotating rod string (20) extending into a well for powering a pump (22). A sleeve (30) is rotated within the stuffing box housing (24) and receives the sucker rod therein, while one or more bearings (34, 36) guide rotation of the sleeve. A plurality of static seals (50) seal between the sleeve and the sucker rod, while a plurality of dynamic seals (40) seal between the sleeve and the stuffing box housing.

REFERENCES:
patent: 5217068 (1993-06-01), Newton
patent: 5823541 (1998-10-01), Dietle et al.
patent: 6843313 (2005-01-01), Hult
patent: 7044217 (2006-05-01), Hult
patent: 2005/0045323 (2005-03-01), Hult
patent: 2095937 (1998-12-01), None

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