Packoff nipple

Details Packoff nipple Packoff nipple

E - Fixed Constructions

21

B

E21B 43/26 (2006.01) E21B 33/068 (2006.01) E21B 33/126 (2006.01)

Patent

CA 2057219

A packoff nipple for use on the mandrel of a wellhead isolation tool features a two step extrusion sealing arrangement activated by a primary element forcing the expansion of a packing ring to fill voids in the tubing or casing brought about by pipe erosion, corrosion, out of round or off center mandrel conditions. Extremely high pressures are sealed off from the wellhead. The packoff nipple sealing elements are protected from damage when running the nipple through restricted areas in the wellhead and the tubing or casing.

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