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Abstract

A system has a gas processing plant having a compressor, at least one natural gas liquids (NGL) train fluidly coupled to the compressor to receive mixed natural gas liquids from the gas processing plant, a valve fluidly coupling the gas processing plant to the at least one natural gas liquids train, and a control system coupled to the gas processing plant, the at least one natural gas liquids train, and the valve. The control system determines when to actuate the valve using a virtual sensing system based on a compressor shutdown condition, a compressor trip condition, a compressor recycle condition, an exclusion switch, a flow rate of the compressor, a running flow capacity of the first compressor, a required bypass flow of the compressor, and bypass flow distribution of the at least one natural gas liquids train.

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First Claim