Casing-engaging well tree isolation tool and method of use

Details Casing-engaging well tree isolation tool and method of use Casing-engaging well tree isolation tool and method of use

E - Fixed Constructions

21

B

E21B 33/03 (2006.01) E21B 37/00 (2006.01)

Patent

CA 2462472

A casing-engaging wellhead isolation and method of the tool protects wellheads from lifting pressures induced by high fluid pressures and high flow rates used to stimulate low pressure wells. A releasable packer assembly mounted to a bottom end of a mandrel of the tool grips the casing and transfers the lifting pressures directly to the casing. Well treatment safety is thereby significantly enhanced.

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