Method and apparatus for reducing borehole and eccentricity...

Details Method and apparatus for reducing borehole and eccentricity... Method and apparatus for reducing borehole and eccentricity...

2006-11-13

2009-06-30

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

C324S339000

Reexamination Certificate

active

07554328

ABSTRACT:
An apparatus, method and computer-readable medium for evaluating an earth formation. A logging tool having a non-conductive mandrel and a conducting sleeve having at least one antenna that are electrically connected is conveyed into a borehole in the earth formation. At least one of the antennae has a coil oriented at a non-zero an angle to a longitudinal axis of the logging tool. The at least one antenna is activated, and an effect of a signal received by a receiver coil on the logging tool due to at least one of (A) an eccentering of the logging tool, and (B) a coil misalignment is reduced.

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