Distributed acoustic sensing (das) for event detection monitoring

A system for distributed acoustic sensing (DAS)-based acoustic event monitoring in a downhole well, the system comprising:

• a fiber-optic cable configured to be deployed within the downhole well;
• an DAS unit configured to transmit the at least one interrogating optical signal through the fiber-optic cable and to receive at least one backscattered optical signal generated in response thereto;
• and
• a memory storing computer-executable instructions which, when executed by at least one processor, cause the at least one processor to execute the method comprising:
• analyzing the at least one backscattered optical signal generated by a DAS unit, to determine at least one optical-signal property;
• identifying, based on the at least one optical-signal property, the occurrence of an acoustic event within the downhole well at a given depth location;
• and
• generating an output associated with the acoustic event.