Method and apparatus for directional resistivity measurement...

Details Method and apparatus for directional resistivity measurement... Method and apparatus for directional resistivity measurement...

2006-04-05

2008-08-19

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

C324S339000

Reexamination Certificate

active

07414407

ABSTRACT:
A resistivity tool has a body with at lest one pair of grooves on its exterior oriented orthogonal to the tool axis. A coil antenna is oriented orthogonal to the grooves in a hole intersecting the grooves and oriented orthogonal to the tool axis. The antenna and an antenna core define a plurality of small antenna loops.

REFERENCES:
patent: 4536714 (1985-08-01), Clark
patent: 4766384 (1988-08-01), Kleinberg et al.
patent: 5138263 (1992-08-01), Towle
patent: 5491488 (1996-02-01), Wu
patent: 5530358 (1996-06-01), Wisler et al.
patent: 6297639 (2001-10-01), Clark et al.
patent: 6577129 (2003-06-01), Thompson et al.
patent: 2004/0113626 (2004-06-01), Wang et al.

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