Method and device for the controlled disconnection of a...

Details Method and device for the controlled disconnection of a... Method and device for the controlled disconnection of a...

2008-03-18

2008-03-18

Neuder, William P. (Department: 3672)

Wells

Processes

Disassembling well part

C166S065100, C166S057000

Reexamination Certificate

active

07343979

ABSTRACT:
A method and device for controlling the disconnection of a wireline (4), of the kind used in wireline operations in a wellbore, from a wireline tool (8), the wireline (4) being provided with a conductor (6) arranged to communicate signals, the signals being monitored at the wire-line tool (8) by means of a lower monitoring and control circuit (24), and the lower monitoring and control circuit (24) activating, by disappearance of signals from the surface, a disconnect device (12) after a predetermined time, the disconnect device (12) being arranged to disconnect the wireline (4) from the wireline tool (8).

REFERENCES:
patent: 3327784 (1967-06-01), Pardue
patent: 5058683 (1991-10-01), Godfrey et al.
patent: 6032733 (2000-03-01), Ludwig et al.
patent: 6053262 (2000-04-01), Ferguson et al.
patent: 6269883 (2001-08-01), Gissler et al.
patent: 6349767 (2002-02-01), Gissler
patent: 6431269 (2002-08-01), Post et al.
patent: 0552087 (1993-07-01), None
patent: 0898046 (1999-02-01), None
patent: 1197631 (2002-04-01), None

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