Latching device

Details Latching device Latching device

1988-12-05

1990-07-10

Massie, IV, Jerome W.

Wells

Means for guiding insertable element laterally of well axis

166386, E21B 2303

Patent

active

049400894

ABSTRACT:
A latching device for locking and removal of a flow control device from a mandrel receiver comprises a cylindrical stem, a locking sleeve slidably mounted upon the stem, an annular locking ring mounted for a limited axial movement along the lower portion of the locking sleeve and a compression spring. The annular locking ring has upper and lower bevel surfaces which are complementary to bevel surfaces of a mandrel receiver.
an improved retrieval device is disclosed for retrieval of a valve which is locked within the mandrel receiver, the device comprising a cylindrical body having a central opening and an internal wall with a recess and a retrieval tool provided with a compressible C-shaped ring for locking engagement with the recess formed in the cylindrical body, thereby allowing retrieval of the cylindrical body, along with the well tool which is securedly attached to the retrieval device.

REFERENCES:
patent: 3207224 (1965-09-01), Schramm
patent: 3827493 (1974-08-01), Terral
patent: 3863961 (1975-02-01), Dinning
patent: 3874448 (1975-04-01), McGowen, Jr. et al.
patent: 4375237 (1983-03-01), Churchman
patent: 4538681 (1985-09-01), Johnston
patent: 4540048 (1985-09-01), Gazda

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