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

2006-07-17

2011-12-06

Neuder, William P (Department: 3672)

Wells

Processes

Producing the well

C417S172000

Reexamination Certificate

active

08069924

ABSTRACT:
A well jet device for testing oil-gas wells comprises a body provided with bypass windows and an insert provided with a jet pump. The insert has channels and a mounting seat embodied therein, carrying a sealing unit with a channel for a cable and well instruments fixed thereto. An output channel communicates with an upstream cavity. A supporting sleeve, provided with bypass openings embodied in the wall of the sleeve and with a flange arranged in the lower part thereof, axially movable and spring-loaded with respect to the body, is arranged therein. A recess used for limiting the displacement of the sleeve flange and connected to the bypass windows is formed thereunder. In the lower position of the sleeve, channel for supplying active medium is linked with surrounding space through the bypass openings and windows, whereas in the top position thereof the windows are closed by the sleeve wall.

REFERENCES:
patent: 4744730 (1988-05-01), Roeder
patent: 7743854 (2010-06-01), Khomynets
patent: 2004/0071557 (2004-04-01), Khomynets
patent: 2059891 (1996-05-01), None
patent: 2129672 (1999-04-01), None

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