Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1984-04-20
1986-07-01
Novosad, Stephen J.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166318, 166325, 166385, 166386, E21B 3414
Patent
active
045974497
ABSTRACT:
A fluid restriction tool having a valve closure member which may be moved from a closed position by the passage of a wireline tool and which moves out of the way of a wireline tool upon removal thereof so that the valve closure member may return to its closed position.
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Neuder William P.
Novosad Stephen J.
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