Method and system for logging a well while fishing for the loggi

Details Method and system for logging a well while fishing for the loggi Method and system for logging a well while fishing for the loggi

1994-07-19

1995-12-26

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166 651, 166277, 166301, 166385, E21B 2300, E21B 3100, E21B 2904, E21B 4700

Patent

active

054779219

ABSTRACT:
This invention provides a method and system for logging an earth formation with a logging tool that is stuck (lodged) in a well bore traversing the earth formation while fishing for the stuck logging tool. This procedure is accomplished by re-establishing communication between the stuck logging tool and surface equipment during the fishing process. Communication is established by reconnecting the electrical conductors in the supporting cable after the cable has been severed in order to install fishing equipment in the well bore around the cable supporting the logging tool. The procedure to reconnect the electrical conductors requires identifying conductors in each end of the severed cable and appropriately matching conductors from each cable end to achieve electrical communication. Once there is electrical communication between the stuck logging tool and surface logging equipment, logging procedures can be continued even during the fishing for the stuck logging tool.

REFERENCES:
patent: 4105070 (1978-08-01), Lavigne et al.
patent: 4678038 (1987-07-01), Rankin
patent: 4690214 (1987-09-01), Wittrisch
patent: 4725783 (1988-02-01), Miyairi et al.
patent: 5370545 (1994-12-01), Laurent

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