Induction log sonde feedpipe having a plurality of tubes arrange

Details Induction log sonde feedpipe having a plurality of tubes arrange Induction log sonde feedpipe having a plurality of tubes arrange

1993-07-28

1995-10-31

O'Shea, Sandra L.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

G01V 318

Patent

active

054633192

ABSTRACT:
An induction log is constructed in a sonde and has at least one or more transmitter coils and at least one or more receiver coils. The sonde supports a power supply and telemetry equipment along with transmitter and receiver apparatus for the coils. The transmitter coils require current levels as much as 1 amperes while the receive signals form output signals which are merely a fraction of a microvolt. The feedpipe array is preferably a feedpipe adapted to be centered in the axial lengthwise portion of the sonde and is further provided with a plurality of openings to enable leads for the coils to be connected. The feedpipe array is formed with a set of multiple steel tubes which are collectively assembled as a bundle on the interior of a copper sleeve.

REFERENCES:
patent: 3181057 (1965-04-01), Bravenec
patent: 3249858 (1966-05-01), Gouilloud
patent: 4651101 (1987-03-01), Barber et al.
patent: 5132624 (1992-07-01), Kitson

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