Cup tool for high pressure mandrel

Details Cup tool for high pressure mandrel Cup tool for high pressure mandrel

2005-07-19

2005-07-19

Bagnell, David (Department: 3672)

Wells

Packers or plugs

Cup type

C166S387000, C285S328000, C285S110000

Reexamination Certificate

active

06918441

ABSTRACT:
A cup tool for use with a mandrel of a wellhead isolation tool has a substantially right-angled stepped shoulder over which an elastomeric sealing element is forced by elevated fluid pressures. A top end of the elastomeric sealing element is inhibited from extrusion past the stepped shoulder during the insertion of the mandrel, thereby reducing the risk of damaging the sealing element before the mandrel is fully inserted through the wellhead. Once the sealing element is exposed to elevated fluid pressures, the top end of the elastomeric sealing element is forced upwardly over the stepped shoulder, and extruded into an annulus between the mandrel and a well casing or production tubing to provide a high-pressure fluid seal.

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U.S. Appl. No. 09/537,629 entitled “Blowout Preventer Protector and Method of Using Same,” filed Mar. 29, 2000.

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