Downhole anomaly localization and interpretation using acoustic and electromagnetic logging

A system for detecting a downhole anomaly, the system comprising:

• an acoustic tool;
• an electromagnetic tool;
• at least one processor;
• and
• a memory coupled to the at least one processor having instructions stored therein, which when executed by the at least one processor, cause the at least one processor to perform a plurality of functions, including functions to:
• receive, via the acoustic tool, one or more acoustic measurements within and/or around a casing at a plurality of corresponding depths;
• determine, based on the one or more acoustic measurements, a presence of a flow at one or more flow depths in the casing, wherein the presence of the flow indicates that there is flow behind the casing or a leak in the casing;
• receive, via the electromagnetic tool, one or more electromagnetic measurements within and/or around the casing at the one or more flow depths;
• determine, based on the one or more electromagnetic measurements, an integrity of the casing at the one or more flow depths in the casing;
• and
• determine, based on the integrity of the casing at the one or more flow depths, a presence or absence of a leak at the one or more flow depths in the casing.