Intelligent pipeline small leaks and thefts detection methods and systems

This invention describes methods and systems for finding tiny leaks or thefts in pipelines. One approach monitors changes in fluid flow at both ends of the pipe, using the fluid's energy wave speed and a complex mathematical model to pinpoint the problem. Another method analyzes pressure data, filtering out common pressure fluctuations to identify unusual waves that indicate a leak or theft, then verifies the location and amount to prevent false alarms.