Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2006-04-04
2006-04-04
Thompson, Kenneth (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S386000, C166S317000, C166S318000, C166S332100
Reexamination Certificate
active
07021389
ABSTRACT:
The present invention provides a bi-directional ball seat and method of use. In at least one embodiment, the present invention provides a fluid control system that includes a radial protrusion that can be selectively engaged and disengaged upstream and/or from a ball seat. For example, a ball can be placed in a passageway, engaged with a downstream ball seat, and the radial protrusion radially extended into the passageway distally from the seat relative to the ball. A reverse movement of the ball is restricted by the active radial movement of the radial protrusion into the passageway. The control system can be used to control a variety of tools associated with the well. Without limitation, the tools can include crossover tools, sleeves, packers, safety valves, separators, gravel packers, perforating guns, decoupling tools, valves, and other tools know to those with ordinary skills in the art.
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Bishop Floyd Romaine
Ross Richard J.
Traweek Marvin Bryce
Turner DeWayne M.
Walker David J.
BJ Services Company
Locke Liddell & Sapp LLP
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