Cranfield University

Hoi Yeung

Yi Cao

Prafull Sharma

Liyun Lao

A system () for detecting and locating corrosion on the outer surface of a metal body (). The system includes an extended electromagnetic waveguide () arranged adjacent to the outer surface of the metal body. The electromagnetic waveguide includes a sacrificial component that experiences substantially the same environment as the outer surface of the metal body. The system also includes a waveform generator () arranged to be connected to the waveguide and to inject an electromagnetic waveform into the waveguide. The system also includes a waveform analyser () connected to the waveguide. The waveform analyser is arranged to receive a reflected portion of the injected electromagnetic waveform from the waveguide. The reflected portion of the injected electromagnetic waveform is used by the waveform analyser to determine the location of corrosion of the sacrificial component of the waveguide.

Corrosion detection system

A method of controlling the flow of a multiphase fluid through a pipeline that includes a riser pipe with a choke valve comprises receiving multiple signals dependent on fluid flow properties from a plurality of sensors in the topside area of the riser pipe, analysing the signals to establish a vector of measurement weights, the product of the vector of measurement weights and a corresponding vector of the signal values of a given time being dependent on the severity of a slug flow forming in the system. Further signals dependent on fluid flow properties are received from the plurality of sensors in the topside area of the riser pipe. A set position for the choke valve is then determined from the product of the vector of measurement weights and further values of signals to restrict characteristics of the flow in the topside from moving towards a severely slugging flow regime.

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Cranfield, United Kingdom

Hoi Yeung