Wells – Valves – closures or changeable restrictors – Fluid operated
Reexamination Certificate
2011-06-21
2011-06-21
Stephenson, Daniel P (Department: 3676)
Wells
Valves, closures or changeable restrictors
Fluid operated
C166S305100
Reexamination Certificate
active
07963334
ABSTRACT:
A kit for converting an existing wireline retrievable surface controlled subsurface safety valve (170, 270, 370) into a bypass passageway apparatus (100) allowing the injection of production-enhancing fluid into a wellbore while maintaining the operation of the closure member (374). Bypass passageway (280) can extend between upper (260) and lower (275) adapters external to the existing wireline retrievable surface controlled subsurface safety valve (270) to allow fluid injection bypass thereof. Conversion kit can include a tubing string hanger to suspend a velocity tubing string (407, 507), a gas lift valve (475) for gas lift operations, a locking mandrel (220), and/or a spacer tube (240).
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Bolding Jeffrey L.
Hill Thomas G.
Mailand Jason C.
McGavern, III Cecil G.
Sides, III Winfield M.
BJ Services Company U.S.A.
Stephenson Daniel P
Zarian Midgley & Johnson PLLC
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