Method and system for detecting events in a conduit

A system for detecting events in a conduit, comprising:

• an optical fiber interrogator for interrogating optical fiber;
• and
• one or more processors communicative with the optical fiber interrogator and memory having stored thereon computer program code configured, when executed by the one or more processors, to cause the one or more processors to perform a method comprising:
• for each of multiple channels of the conduit, each channel comprising a portion of the conduit:
• obtaining phase data for the channel, the phase data being obtained by causing the optical fiber interrogator to interrogate optical fiber positioned alongside the conduit;
• determining one or more baselines from the phase data;
• setting one or more event thresholds for identifying when an event has occurred at the channel;
• after determining the one or more baselines, interrogating the optical fiber to obtain optical fiber readings from the channel;
• extracting parameter data from the optical fiber readings;
• and
• identifying whether an event has occurred at the channel using the optical fiber readings and the one or more event thresholds, wherein an event is determined to have occurred if (parameter value−mean)/(M*std)>1,
• wherein parameter value is a value of the parameter data, mean is a mean of the parameter data, M is a scalar greater than 0, and std is a standard deviation of the parameter data.

A computer-readable medium having stored thereon computer program code executable by the 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 comprising:

• for each of multiple channels of a conduit, each channel comprising a portion of the conduit:
• obtaining sensor data for the channel, the sensor data being obtained from one or more sensors;
• determining one or more baselines from the sensor data;
• setting one or more event thresholds for identifying when an event has occurred at the channel;
• after determining the one or more baselines, using the one or more sensors to measure sensor readings from the channel;
• extracting parameter data from the sensor readings;
• and
• identifying whether an event has occurred at the channel using the measured sensor readings and the one or more event thresholds, wherein an event is determined to have occurred if (parameter value−mean)/(M*std)>1,
• wherein parameter value is a value of the parameter data, mean is a mean of the parameter data, M is a scalar greater than 0, and std is a standard deviation of the parameter data.