High-power well logging method and apparatus

Details High-power well logging method and apparatus High-power well logging method and apparatus

2006-12-26

2006-12-26

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

C340S853100, C340S854400, C340S854500, C340S854600, C340S854700, C340S854800, C340S855700, C340S855800, C340S855900

Reexamination Certificate

active

07154412

ABSTRACT:
A power delivery system for a wireline tool includes two independent power transmission loops operating on a standard six-conductor cable. The two loops each connect directly to a respective terminals of a DC auxiliary power supply. Each loop also couples through a transformer to an AC instrument power supply. Another transformer for telemetry signals facilitates bidirectional communication between the downhole tool and an uphole computer.

REFERENCES:
patent: 3459956 (1969-08-01), Brock
patent: 3603923 (1971-09-01), Nelligan
patent: 3916685 (1975-11-01), Paap et al.
patent: 4605268 (1986-08-01), Meador
patent: 4720996 (1988-01-01), Marsden et al.

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