Multiple pipes deformation detection using electromagnetic techniques

A system comprising:

• an electromagnetic (EM) logging tool disposed in a wellbore, wherein the EM logging tool comprises:
• one or more transmitters disposed on the EM logging tool configured for transmitting a first EM field from the one or more transmitters into two or more nested pipes to energize the two or more nested pipes with the first EM field thereby producing an eddy current in the one or more nested pipes;
• and
• one or more receivers disposed on the EM logging tool configured for measuring a second EM field generated by the eddy current in the two or more nested pipes with the one or more receivers to form a plurality of measurements;
• and
• an information handling system configured for:
• forming an EM log from the plurality of measurements;
• differentiating an EM log distortion into different types of structural irregular zone comprising eccentricity, deformation, localized corrosion, and/or a combination thereof by utilizing a spectral analysis on the EM log;
• and
• determining the structural irregular zone type and severity qualitatively with magnitude and orientation of the EM log distortion.