Wells – Packers or plugs – Flow stopping type; e.g. – plug
Reexamination Certificate
2007-06-26
2010-11-16
Thompson, Kenneth (Department: 3672)
Wells
Packers or plugs
Flow stopping type; e.g., plug
C166S229000, C166S284000
Reexamination Certificate
active
07832473
ABSTRACT:
A method is disclosed for controlling the flow of fluid between a downhole formation and a base pipe located in wellbore proximate the downhole formation. A plurality of chokes are established between the formation and the base pipe to regulate the flow of fluid between the formation and the base pipe. In one embodiment, each choke comprises a nozzle formed in the base pipe. In another embodiment, each choke comprises a nozzle in a housing arranged on the base pipe. A plurality of plugs are pumped downhole for engagement with the nozzles. The pressure in the wellbore is then increased until the plugs engage each nozzle. In an alternative embodiment, plugs are pumped downhole and stop up the housing containing the nozzles. Fluid flow between the base pipe and the downhole formation may be reestablished by dissolving the plugs or by back-flowing the production string to dislodge them.
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Loikith Catherine
Matthews David G.
McGoff Kevin B.
Schlumberger Technology Corporation
Thompson Kenneth
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