Methods and systems for identifying a zone of interest in a wellbore

A system for monitoring a wellbore, comprising:

• optical fiber positioned alongside the wellbore;
• an optical fiber interrogator configured to interrogate the optical fiber;
• and
• one or more computer processors configured to:
• control the optical fiber interrogator so as to interrogate the optical fiber;
• receive, based on the interrogation of the optical fiber, interferometric data from the optical fiber interrogator;
• extract parameter data from the interferometric data, the parameter data comprising data relating to one or more parameters of the wellbore as a function of depth along the wellbore;
• receive production data comprising data relating to surface production from the wellbore;
• and
• generate cross-correlation data by cross-correlating the production data with the parameter data, wherein the cross-correlation data comprises data relating to cross-correlation strength as a function of the depth along the wellbore.

A non-transitory, computer-readable medium having stored thereon computer program code executable by one or more processors and configured, when executed by the one or more processors, to cause the one or more processors to perform a method of identifying a zone of interest in a wellbore, the method comprising:

• receiving production data comprising data relating to surface production from the wellbore;
• receiving parameter data comprising data relating to one or more parameters of the wellbore as a function of depth along the wellbore;
• generating cross-correlation data by cross-correlating the production data with the parameter data, wherein the cross-correlation data comprises data relating to cross-correlation strength as a function of the depth along the wellbore;
• and
• identifying within the cross-correlation data one or more zones of interest, based on the cross-correlation strength and the depth along the wellbore.