Well tool

Details Well tool Well tool

1981-03-30

1983-04-05

Purser, Ernest R.

Wells

Expansible anchor or casing

Expansible means translated by wedge or cam

166317, 166322, 166382, 285315, E21B 2300

Patent

active

043788394

ABSTRACT:
A subsurface safety valve is combined with a locating means for locating the safety valve as it is pumped down into the well. A locking mandrel is provided that locks the safety valve in position after it has been located by a downward force being exerted on the locking means. When it is desired to remove the subsurface safety valve a pulling tool is run in and a downward force exerted to release the locking means permitting it thereafter to be retrieved from the well by reverse circulation.

REFERENCES:
patent: 840791 (1970-05-01), Moore, Jr.
patent: 3507329 (1970-04-01), Stone, Jr.
patent: 3638723 (1972-02-01), Carroll
patent: 3863715 (1975-02-01), Yonker

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