Wells – Expansible anchor or casing
Patent
1989-03-09
1990-07-31
Kisliuk, Bruce M.
Wells
Expansible anchor or casing
166217, E21B 2302
Patent
active
049443453
ABSTRACT:
A lock mandrel for selectively locking a well tool at a desired landing nipple in a well bore, and a running tool for installing the lock mandrel. The lock mandrel includes an upwardly operable expander sleeve for locking the mandrel responsive to an upward force and a selector key assembly for landing the lock mandrel at a landing nipple having a selector profile compatible with the profile on the selector keys of the lock mandrel. The running tool includes a latch key assembly for coupling the running tool with the lock mandrel and an operator lug assembly for operating the lock mandrel. The running tool also includes a non-load bearing shear pin for holding the running tool in a running mode and a emergency release apparatus for releasing the lock mandrel in the well bore and retrieving the lock mandrel with the running tool in the event that the locking mechanism of the lock mandrel is not fully operable in the well bore.
REFERENCES:
patent: 2862564 (1958-12-01), Bostock
patent: 4396061 (1983-08-01), Tamplen et al.
patent: 4437522 (1984-03-01), Krause, Jr. et al.
patent: 4545434 (1985-10-01), Higgins
patent: 4583591 (1986-04-01), Krause, Jr. et al.
patent: 4595054 (1986-06-01), Schroeder
patent: 4745974 (1988-05-01), Higgins
patent: 4823872 (1989-04-01), Hopmann
Kisliuk Bruce M.
Otis Engineering Corporation
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