Method and apparatus for improved current focusing in...

Details Method and apparatus for improved current focusing in... Method and apparatus for improved current focusing in...

2007-08-14

2007-08-14

Patidar, Jay M. (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

Using electrode arrays, circuits, structure, or supports

C324S375000, C324S347000, C324S358000

Reexamination Certificate

active

11110620

ABSTRACT:
A galvanic resistivity tool with one or more measurement electrodes and guard electrodes, and one or more shielding electrodes. The potential difference between the measurement electrodes and the guard electrodes is controlled to minimize current flow between the measurement electrodes and the shielding electrodes. This provides improved focusing and avoids effects of contact impedance.

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