Composite landing collar for cementing operation

Details Composite landing collar for cementing operation Composite landing collar for cementing operation

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) E21B 33/16 (2006.01)

Patent

CA 2370006

A composite landing collar is disclosed which is preferably adhesive bonded to the liner string using a high temperature epoxy. The spacing during bonding is maintained within dimensional limits using spacers. The body features a bi-directional material, with an appropriate ratio in the warp and fills directions, for about a quarter of the wall thickness. A unidirectional material with the fibers axially aligned aids in reduction of thermal stresses in the thick wall during curing, as well as reducing shear stress concentration along the adhesive bonding interface.

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