Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2008-04-17
2009-08-11
Gay, Jennifer H (Department: 3676)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S075150, C166S097100, C137S268000
Reexamination Certificate
active
07571773
ABSTRACT:
Multiple ball launch assemblies comprise a plurality of ball launch pods disposed around an outer wall surface of a housing. The ball launch pods are operatively associated with a flow tube disposed within the housing. An actuator assembly rotates the flow tube to align a first opening in the flow tube with a first ball launch pod so that a first ball is launched into the wellbore. Further rotation of the flow tube aligns subsequent openings in the flow tube with subsequent corresponding ball launch pods so that subsequent balls are launched into the wellbore.
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Bahr Glenn A.
Mailand Jason C.
Sides, III Winfield M.
West Lonnie C.
Baker Hughes Incorporated
Gay Jennifer H
Greenberg & Traurig, LLP
Matheny Anthony F.
Michener Blake
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