Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2004-06-12
2008-11-25
Bagnell, David J. (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C166S101000
Reexamination Certificate
active
07455107
ABSTRACT:
In pumping engineering, the inventive device comprises a ring provided with a sealing unit arranged on a casing string and smooth pipe column. The pump body has a channel supplying an active medium, a channel supplying an active medium pumped out of the well and a stepped through channel such that it is possible to mount therein a blocking insert which closes the active medium supply channel or a depression insert whose mounting cuts off the cross section of the pipe column. A logging device is arranged on the lower end of the pipe column, a sealing unit is put on said pipe column between said logging device and the jet pump such that it is axially offsetable with respect to the pipe column, the lower section of the pipe column above the logging device is embodied such that is perforated.
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Andrews David
Bagnell David J.
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