Removable packer and tesnion slip assembly

Details Removable packer and tesnion slip assembly Removable packer and tesnion slip assembly

1973-12-13

1976-01-20

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

With holding means functioning only during transportation...

285145, F16L 5500, F16L 5700, F16L 2100

Patent

active

039333760

ABSTRACT:
A packer and tension slip assembly is disposed in the annular area between two coaxial drilling casings having different diameters. The coaxial casings are secured one to the other by placing the inner casing in tension with the outer casing. A packoff unit is attached to and completes the assembly forming an pressure tight seal in the defined annulus. The packer and tension slip assembly also serves to center one string in respect to the other and can be retrieved when no longer required, and subsequently reused.

REFERENCES:
patent: 2315134 (1943-03-01), Roach et al.
patent: 2568581 (1951-09-01), Crain
patent: 2690344 (1954-09-01), Allen
patent: 2850301 (1958-09-01), Allen
patent: 3068027 (1962-12-01), Lewis et al.
patent: 3209829 (1965-10-01), Haeber

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