METHOD AND SYSTEM FOR THE CONTINUOUS REMOTE TRACKING OF A PIG DEVICE AND DETECTION OF ANOMALIES INSIDE A PRESSURIZED PIPELINE

摘要

Method for remote monitoring the position and advance speed of a pig device inside a pipeline consisting of pipe sections joined by welding, comprising: continuous acquisition and registration, by a plurality of measurement stations equipped with vibroacoustic sensors discretely located along the pipeline, of vibroacoustic signals due to hydraulic pressure transients and/or vibrations generated by the pig device in movement in the contact/friction phases on the welding seams and/or other physical variations of the pipeline; analysis and processing, by a centralized control unit, of the signals to reveal, identify and reference the hydraulic/acoustic transients produced by the pig device during said contact/friction; continuous calculation of the linear position and advance speed of the pig device in relation to the time lapse between the vibroacoustic signals registered by at least two measurement stations installed along the pipeline.