Well jet device and the operating method thereof

Details Well jet device and the operating method thereof Well jet device and the operating method thereof

2006-07-07

2009-06-23

Gay, Jennifer H (Department: 3676)

Wells

Processes

Producing the well

C417S167000, C417S172000

Reexamination Certificate

active

07549478

ABSTRACT:
Well jet device comprises a packer mounted on a pipe string provided with a central channel embodied therein and jet pump. The pump has channels supplying a working medium to a nozzle, removing the media mixture and supplying a medium pumped from the well, respectively. Said nozzle is connected to the annular space by the channels and the channel is connected to the pipe string internal cavity through the channel on the side, where the diffuser of the pump enters and exits. A working medium flow switch is arranged in the body. An annular channel communicating with the channel via the channel and the nozzle is above said abutment flange and the steady bush comprises bypass holes and mounting seat for mounting a sealing unit with a hole for passing a logging cable with instruments therethrough or for arranging a depression insert provided with a return valve.

REFERENCES:
patent: 4744730 (1988-05-01), Roeder
patent: 2004/0071557 (2004-04-01), Khomynets
patent: 2176336 (2001-11-01), None
patent: 2222717 (2004-01-01), None
patent: 972051 (1982-11-01), None
patent: 1689594 (1991-11-01), None

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