METHOD FOR CONTROL OF LIQUID TRANSMISSION THROUGH PIPELINE Russian patent published in 2014 - IPC F17D1/12 

FIELD: oil and gas industry.

SUBSTANCE: method includes displacement of a liquid batch through the gate at the pipeline terminal by a separator operated by a compressed gas supplied from the compressor station installed at the pipeline initial point and shutdown of the compressor station. In the process of liquid transmission, using the database including length of the pipeline section, inner diameter of the pipeline, discharge pressure of the compressor station which is sufficient for displacement of the liquid batch, rated gas delivery at the discharge pressure, height points in the route profile for the pipeline section, maximum permitted rate for liquid displacement from the pipeline, time interval sufficient to determine the separator speed, as per the computational procedure in the program control unit the separator speed is calculated, compared with the preset maximum permitted rate for liquid displacement from the pipeline and when the permitted speed is exceeded the compressor station is shut down and further liquid displacement through the gate at the pipeline terminal is made by energy of compressed air.

EFFECT: reduced power consumption.

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