Patent ID: 7268555

Claim:
A method of establishing the utility of a resistivity logging tool for use in an earth formation, the method comprising: (a) conveying a logging tool into a borehole in the earth formation; (b) exciting a transmitter antenna on the logging tool at a plurality of rotational angles in a substantially homogenous interval, the transmitter antenna having a first axial direction; (c) receiving a first signal responsive to the excitation with a first receiver antenna having an axial direction different from the first axial direction at each of the plurality of rotational angles; (d) receiving a second signal responsive to the excitation with a second receiver antenna having an axial direction substantially parallel to the first axial direction at each of the plurality of rotational angles; (e) using the first signals and the second signals at each of the plurality of rotational angles to estimate a misalignment angle between the transmitter antenna and the first receiver antenna; (f) correcting the first signal at least one of the plurality of rotational angles; and (g) using the corrected signal to estimate a resistivity property of the earth formation thereby establishing the utility of the logging tool.