Push/pull belleville stack for use with zertech MTM seal

Details Push/pull belleville stack for use with zertech MTM seal Push/pull belleville stack for use with zertech MTM seal

2008-04-29

2008-04-29

Tsay, Frank (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C166S179000

Reexamination Certificate

active

07363975

ABSTRACT:
A settable and unsettable seal arrangement includes a metal-to-metal seal element; a setting/releasing sleeve in operable communication with the seal element; a retraction ring fixedly attached to the setting/releasing sleeve; a load preservation and unsetting sleeve fixedly attached to the seal element; and a resilient member operably disposed between the setting/releasing sleeve and the load preservation and unsetting sleeve and method for setting and unsetting.

REFERENCES:
patent: 4049055 (1977-09-01), Brown
patent: 4561499 (1985-12-01), Berner et al.
patent: 6896049 (2005-05-01), Moyes
patent: 7134506 (2006-11-01), Moyes

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