Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2005-04-19
2005-04-19
Bagnell, David (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S322000, C166S192000, C166S277000
Reexamination Certificate
active
06880641
ABSTRACT:
A system for communicating hydraulic fluid to a wireline retrievable safety valve (44) comprises a tubing retrievable safety valve (50) having a non annular hydraulic chamber (60) in a sidewall portion thereof and a communication tool (100) that is selectively locatable within the tubing retrievable safety valve (50). The communication tool (100) creates a fluid passageway (150) between the non annular hydraulic chamber (60) and the interior of the tubing retrievable safety valve (50) by penetrating through the sidewall portion and into the non annular hydraulic chamber (60). Thereafter, when the wireline retrievable safety valve (44) is positioned within the tubing retrievable safety valve (50), hydraulic fluid is communicatable thereto through the fluid passageway (150).
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Dennistoun Stuart M.
Gazda Imre I.
Smith Roddie Robert
Bagnell David
Halliburton Energy Service,s Inc.
Stephenson Daniel
Youst Lawrence R.
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