Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent
1984-04-24
1985-10-08
Novosad, Stephen J.
Wells
Expansible anchor or casing
Expansible means translated by wedge or cam
166237, 166125, E21B 2300
Patent
active
045454345
ABSTRACT:
Well tools for running and setting a well safety valve including a lock mandrel for releasably locking the valve at a no-go landing nipple in a well bore and a running tool for running and setting the lock mandrel. The lock mandrel includes a body provided with a no-go ring, locking dogs on the body, and an expander sleeve movable upwardly in the body for expanding and locking the dogs. The running tool includes a tubular core having an end engageable with an operating tube of the safety valve, an upper latch assembly for engaging the lock mandrel housing to couple the running tool with the lock mandrel, a lower latch assembly for operating the expander sleeve of the lock mandrel to expand the mandrel locking dogs, and a head for connecting the running tool in a wireline tool string. The running tool has locking features which apply a force from a spring of the safety valve to the upper latch assembly to lock the running tool with the lock mandrel. A safety valve is connected to the lock mandrel which is coupled with the running tool. The assembly is lowered in a well to a no-go landing nipple. A control fluid pressure to the safety valve relieves the valve spring force from the running tool core and the running tool is pulled upwardly expanding the lock mandrel dogs and releasing the running tool from the lock mandrel.
REFERENCES:
patent: 2862560 (1958-12-01), Bostock et al.
patent: 3102593 (1963-09-01), Sizer
patent: 3507329 (1970-04-01), Stone, Jr.
patent: 3670821 (1972-06-01), Tamplen
patent: 3856081 (1974-12-01), Canalizo
patent: 4043392 (1977-08-01), Gazda
patent: 4161984 (1979-07-01), Watkins
Garland H. Mathews
Neuder William P.
Novosad Stephen J.
LandOfFree
Well tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2215023