Communications: radio wave antennas – Antennas – Buried underground or submerged under water
Reexamination Certificate
2005-10-04
2010-11-23
Wimer, Michael C (Department: 2821)
Communications: radio wave antennas
Antennas
Buried underground or submerged under water
C324S338000
Reexamination Certificate
active
07839346
ABSTRACT:
The specification discloses a printed circuit board (PCB) based ferrite core antenna. The traces of PCBs form the windings for the antenna, and various layers of the PCB hold a ferrite core for the windings in place. The specification further discloses use of such PCB based ferrite core antennas in downhole electromagnetic wave resistivity tools such that azimuthally sensitivity resistivity readings may be taken, and borehole imaging can be performed, even in oil-based drilling fluids.
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Bittar Michael S.
Hensarling Jesse K.
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Scott Mark E.
Wimer Michael C
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