Wells – Processes – Placing or shifting well part
Reexamination Certificate
2007-06-12
2007-06-12
Gay, Jennifer H. (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S332100
Reexamination Certificate
active
10783404
ABSTRACT:
Systems and methods for positively closing off a section of wellbore and, thereby providing reservoir control. Systems and methods are described for selectively closing off a section of a wellbore to fluid communication. The wellbore completion section may then be reopened to fluid communication upon reconnection of the upper completion section to the lower completion section. Advantageously, the systems and methods of the present invention generally preclude fluid communication between the annulus of the upper completion section and the flowbore of the lower completion section until the lower completion section is closed off to fluid flow.
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Chavers Raymond D.
Cobb John M.
Gomez Alfredo
Walker Graeme J.
Baker Hughes Incorporated
Gay Jennifer H.
Madan Mossman & Sriram P.C.
Stephenson Daniel P
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