Bore-hole-jet device for formation testing and a prestarting...

Details Bore-hole-jet device for formation testing and a prestarting... Bore-hole-jet device for formation testing and a prestarting...

2005-11-08

2005-11-08

Dang, Hoang (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S066000, C166S068000, C166S105000, C166S250110, C166S372000

Reexamination Certificate

active

06962197

ABSTRACT:
The invention relates to fluidics, in particular to jet devices for lifting various liquids, essentially for lifting petrol out of wells and for well examination. The inventive jet device comprises a packer and a flow column provided with a bearing assembly. Bypass openings are embodied in said bearing assembly and a jet pump is arranged inside the body thereof. A channel for running a medium mixture off the jet pump into an annular space connected to the bypass openings, a channel for supplying fluid pumped-out from the well to the jet pump and a channel for supplying ejecting medium to a nozzle of the jet pump are embodied inside the body. In addition, a pressure-sealing unit is arranged in the channel for supplying the pumped-out fluid in such a way that it is superposed with respect to the jet pump. A bypass channel is embodied in the pressure-sealing unit in such a way that it enables a logging cable to be passed through said channel and the channel for supplying the pumped-out liquid. The logging cable makes it possible to arrange instruments and equipment in the well below the jet pump in such a way that they can move along the borehole.

REFERENCES:
patent: 4744730 (1988-05-01), Roeder
patent: 2004/0129416 (2004-07-01), Khomynets
patent: 2004/0134663 (2004-07-01), Khomynets
patent: 2129671 (1999-04-01), None
patent: 2143597 (1999-12-01), None
patent: 1146416 (1985-03-01), None
patent: 1321942 (1987-07-01), None
patent: 1545011 (1990-02-01), None
patent: 1668646 (1991-08-01), None

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