Cup tool for high pressure mandrel

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

E - Fixed Constructions

21

B

E21B 33/03 (2006.01) E21B 33/068 (2006.01) E21B 33/126 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2406011

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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