18502904. In-pipe Localization of Tools Using Time Between Signals (SAUDI ARABIAN OIL COMPANY)
In-pipe Localization of Tools Using Time Between Signals
Organization Name
Inventor(s)
Mohammed H. Al-sharif of Thuwal SA
Khalid S. Ghamdi of Dhahran SA
Mohammed T. Abdulmohsin of Dhahran SA
In-pipe Localization of Tools Using Time Between Signals
This abstract first appeared for US patent application 18502904 titled 'In-pipe Localization of Tools Using Time Between Signals
Original Abstract Submitted
Systems and methods for estimating location of features in a pipeline can be based on a device with two arrays axially spaced apart from each other by a distance. Measurements of signals from the first array and the second array of electromagnetic sensors are acquired and, based on the measurements, welds in walls of the pipeline are detected. An instantaneous velocity of the device can be estimated based, at least in part, by dividing the distance between first array of electromagnetic sensors and the second array of electromagnetic sensors by time elapsed between first array of electromagnetic sensors passing the weld and the second array of electromagnetic sensors passing the weld. The position of the device in the pipeline can be estimated based, at least in part, on the estimates of the instantaneous velocity of the device over time.