Downhole locking apparatus

Details Downhole locking apparatus Downhole locking apparatus

1988-04-22

1989-04-25

Novosad, Stephen J.

Wells

Expansible anchor or casing

Expansible means translated by wedge or cam

166382, 285 3, E21B 2303

Patent

active

048238724

ABSTRACT:
Apparatus for effecting locking engagement with a well conduit recess comprises a locking tool having radially shiftable locking lugs which are shiftable to a locked position in the conduit recess by downward movement of a lock mandrel. A running tool is secured to the lock mandrel by a plurality of radially shiftable latching elements. Downward movement of the running tool produced by wireline manipulation will effect the downward displacement of the lock mandrel to shift the locking lugs outwardly into engagement with the latching recess; however, the latching elements will not release the lock mandrel from the running tool until full radial engagement of the locking lugs in the conduit locking recess has been achieved.

REFERENCES:
patent: 4043390 (1977-08-01), Glotin
patent: 4510995 (1985-04-01), Krause, Jr. et al.
patent: 4545434 (1985-10-01), Higgins
patent: 4595054 (1986-06-01), Schroeder

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