METHOD FOR MONITORING OF MAIN PIPELINE CONDITION Russian patent published in 2009 - IPC F17D5/02 

FIELD: oil and gas production.

SUBSTANCE: invention is related to remote control of condition and protection of main pipeline against leaks of pumped product. In method high-frequency oscillation is excited, manipulated by phase by modulating code, which reflects heat radiation from monitored surface of route, or modulating code that reflects location of emergency section and emergency scale, therefore creating a complex channel with phase manipulation, is amplified by power, radiated into air, caught on the pumping station, which is nearest upwards along with motion of transported product, is multiplied with reference voltage, low frequency voltage is separated, as proportional to modulating code, it is multiplied with received complex signal with phase manipulation, harmonic oscillation is separated, which is used as reference voltage, low frequency voltage, which is proportional to modulating code, is registered, visualised and documented.

EFFECT: improved validity of transfer of discrete information about thermal condition of main pipeline, location of emergency section and scale of emergency by application of complex signals with phase manipulation.

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