Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2007-12-31
2010-11-16
Neuder, William P (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S380000
Reexamination Certificate
active
07832485
ABSTRACT:
A method of deploying a tool into a pressurized well is provided that includes providing the well with a wellhead having a blow out preventer coupled thereto; setting a pressure barrier within the well at a distance below the blow out preventer that is at least as long as the length of the tool to create a pressure chamber between the blow out preventer and the pressure barrier; and opening the blow out preventer to allow for conveyance of the tool into the pressure chamber.
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Flowers Joseph K.
Pessin Jean-Louis
Saheta Vishal
Shampine Rod
Cate David
Dae Michael
Nava Robin
Neuder William P
Schlumberger Technology Corporation
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