System and method for locating an anomaly

A computer readable medium storing computer executable instructions for performing a method for determining a direction to an anomaly in a formation near a wellbore, in a system comprising a device with at least one transmitter for transmitting electromagnetic signals and a receiver for detecting transient responses induced by the electromagnetic signals, the method comprising:

• calculating at least one of an apparent azimuth angle and an apparent dip angle based on the transient responses obtained by transmitting the electromagnetic signals through the formation near the wellbore and detecting the transient responses at the at least one receiver;
• monitoring the at least one calculated apparent angle over time;
• and
• determining the direction to the anomaly from the at least one calculated apparent angle after the at least one monitored apparent angle deviates from a zero value.

A system for determining a direction to an anomaly in a formation near a wellbore, the system comprising:

• at least one transmitter for transmitting electromagnetic signals through the formation near the wellbore;
• at least one receiver for detecting transient responses induced by the electromagnetic signals;
• and
• a computer readable medium storing instructions for:
• calculating at least one of an apparent azimuth angle and an apparent dip angle based on the transient responses;
• monitoring the at least one calculated apparent angle over time;
• and
• determining the direction to the anomaly from the at least one calculated apparent angle after the at least one monitored apparent angle deviates from a zero value.