Well jet device

Details Well jet device Well jet device

2008-01-10

2010-10-05

Bagnell, David J (Department: 3676)

Wells

With below and above ground modification

Eduction pump or plunger in well

C166S101000, C166S250010, C166S105000, C166S372000, C417S172000

Reexamination Certificate

active

07806174

ABSTRACT:
A jet pump mounted on a pipe string and a packer, and a through channel with a sealing unit having a logging cable channel is in the pump body. A check valve is in a channel, for supplying a medium pumped out from a well, at the input thereof in the lower body. A guiding bush with a movable rod, arranged parallel to the logging cable, is fixed to the body under the valve. The top of the rod is positioned under the check valve closing element and a fork, over which the logging cable passes, fastens to the lower end of the rod. The closing element can be pressed out from a seat and brought into contact with the fork while a downhole instrument is lifted. The invention extends functionality by isolating pipe string spaces above and under the jet pump when the instrument is below the pump.

REFERENCES:
patent: 2004/0071557 (2004-04-01), Khomynets
patent: 2059891 (1996-05-01), None
patent: 2160364 (2000-12-01), None
patent: 2188970 (2002-09-01), None
patent: 02/081928 (2002-10-01), None

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