Device for carrying out interventions in nonflowing deflected pr

Details Device for carrying out interventions in nonflowing deflected pr Device for carrying out interventions in nonflowing deflected pr

1991-11-04

1993-06-08

Neuder, William P.

Wells

Processes

With indicating, testing, measuring or locating

E21B 2310, E21B 4706

Patent

active

052170721

ABSTRACT:
The device comprises an intervention tool consisting for example of a pumping assembly (6) and a measuring assembly (8) which are associated with a tubing (7) and taken down into a well. The connection between at least one of the two assemblies and a surface installation is achieved by means of a multicore cable (11) fitted with a delayed-plugging connector (12) and conveyed to said assembly by a fluid current. In order to avoid the undesirable effects which the pumping fluid may have on the measuring instruments or possible circulation impossibilities with certain pumping means, a bypass valve (17) allowing the exhaust of the fluid outside the tubing is installed on the tubing, close to the concerned assembly or to each one of them. This valve is for example a sliding valve, the connector (12) being fitted with means (13) for opening and closing this valve in the translations thereof near the plugging position thereof.

REFERENCES:
patent: 4159643 (1979-07-01), Watkins
patent: 4729429 (1988-03-01), Wittrisch
patent: 4940094 (1990-07-01), Lessi et al.

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