Rotatable liner hanger with multiple bearings and cones

Details Rotatable liner hanger with multiple bearings and cones Rotatable liner hanger with multiple bearings and cones

E - Fixed Constructions

21

B

166/62

E21B 33/00 (2006.01) E21B 23/04 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2015711

ABSTRACT OF THE DISCLOSURE A multiple cone, multiple bearing liner hanger for hanging a well liner for extension of the casing liner. The multiple slip cone and multiple bearing arrangement provides uniform, positive distribution of liner weight thereby facilitating hanging of heavier liner strings. The multiple bearings ensure proper rotation of the liner during cementation. The multiple cone, multiple bearing liner hanger includes an upper slip assembly with an associated bearing and a lower slip assembly with an associated bearing. The hanger is hydraulically set by first setting the upper slips and thereafter setting the lower slips. A series of shear pins ensure proper setting of the hanger to distribute the hang weight evenly over the slip cones and bearings.

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