Tracking cementing plug position during cementing operations

A system comprising:

• one or more processors;
• and
• at least one computer-readable storage medium having stored therein instructions which, when executed by the one or more processors, cause the system to:
• determine a length of an optical fiber line deployed into a wellbore for a cementing process;
• measure signal intensity data as a function of distance from the optical fiber line, the optical fiber line being attached to a lower cementing plug and an upper cementing plug, the upper cementing plug being attached to the optical fiber line by an attenuation assembly;
• generate signal intensity loss profiles based on the signal intensity data comprising measurements of a signal intensity loss during a round trip delay of a light signal in the optical fiber line;
• and
• determine positions of the lower cementing plug and the upper cementing plug based on the signal intensity loss profiles of the optical fiber line.

A non-transitory computer-readable storage medium comprising:

• instructions stored on the non-transitory computer-readable storage medium, the instructions, when executed by one or more processors, cause the one or more processors to:
• determine a length of an optical fiber line deployed into a wellbore for a cementing process;
• measure signal intensity data as a function of distance from the optical fiber line, the optical fiber line being attached to a lower cementing plug and an upper cementing plug, the upper cementing plug being attached to the optical fiber line by an attenuation assembly;
• generate signal intensity loss profiles based on the signal intensity data comprising measurements of a signal intensity loss during a round trip delay of a light signal in the optical fiber line;
• and
• determine positions of the lower cementing plug and the upper cementing plug based on the signal intensity loss profiles of the optical fiber line.