Patent ID: 8762107

Claim:
A method for determining calibration factors of an induction logging tool, the method comprising: placing the induction logging tool in a first position at a height above a surface of the earth, the induction logging tool comprising a first receiver coil, a second receiver coil, and a third receiver coil, each receiver coil having a distinct orientation; performing a first set of measurements of conductivity using the first, second, and third receiver coils with the induction logging tool in the first position at the height; placing the induction logging tool in a second position that is rotated about a longitudinal axis of the tool from the first position at the same height above the surface of the earth; performing a second set of measurements of conductivity using the first, second, and third receiver coils with the induction logging tool in the second position at the same height; and determining the calibration factors that correct conductivity measurements performed by the induction logging tool in a borehole penetrating the earth using the first and second sets of measurements.