Title:
BORE-HOLE JET DEVICE FOR FORMATION TESTING AND A PRESTARTING PROCEDURE FOR SAID DEVICE
Document Type and Number:
WIPO Patent Application WO2002035101
Kind Code:
A8
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.
Inventors:
KHOMYNETS ZINOVIY DMITRIEVICH (UA)
Application Number:
PCT/RU2001/000439
Publication Date:
July 17, 2003
Filing Date:
October 23, 2001
Export Citation:
Assignee:
KHOMYNETS ZINOVIY DMITRIEVICH (UA)
KOSANYAK IVAN NIKOLAEVICH (RU)
KOSANYAK IVAN NIKOLAEVICH (RU)
International Classes:
F04F5/24; (IPC1-7): F04F5/02
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