Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2006-03-16
2009-02-24
Bomar, Shane (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S300000, C166S386000, C166S192000
Reexamination Certificate
active
07493956
ABSTRACT:
Devices and methods for selectively closing and opening flow of production fluid (oil, gas, or water) through the flowbore of a production string by chemically altering the phase of fluid media flowing through the production tubing to form a substantially solid plug or blockage. The phase of the fluid media is altered by selectively injecting a predetermined catalyst into a portion of the flowbore wherein it is desired to create a plug or blockage. When it is desired to remove the blockage, a dissolving agent is selectively added to the flowbore via a reversing sub to reverse the phase of the blockage from solid to liquid/gas. As the blockage is dissolved, flow is reestablished within the flowbore.
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Morgan Ryan J.
Shaw Brian S.
Baker Hughes Incorporated
Bomar Shane
Hunter Shawn
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