Wellhead isolation tool

Details Wellhead isolation tool Wellhead isolation tool

E - Fixed Constructions

21

B

166/42

E21B 23/06 (2006.01) E21B 33/068 (2006.01) E21B 33/12 (2006.01)

Patent

CA 1217128

ABSTRACT OF THE DISCLOSURE A concentric mandrel assembly for use in a wellhead isolation tool is operable from outside the wellhead and casing. An outer mandrel of the assembly carries a packoff nipple, including a resilient seal member, on its lower end and the inner mandrel of the assembly carrier carries an expander on its lower end. Means are provided for axially moving the mandrels relative to one another so that the expander can apply outward force on the resilient seal against the wall of a well casing.

477205

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