Workshops

Three workshops complete the program and their topics are

  • Flow issues up- and downstream of Multiphase Pumps,
  • Long Distance Subsea Power Transmission, and
  • Multiphase Pumps for High Differential Pressure.

Led by competent industry specialists and moderators, this is an outstanding possibility to enhance your knowledge and participate in profound discussions.

WORKSHOP I - FLOW ISSUES UP- AND DOWNSTREAM OF MULTIPHASE PUMPS

Multiphase flow in pipelines has been investigated since decades already. However, still available models and computer simulation programs bear certain risks for day-to-day operations, and there is a great chance to do things wrong. This is not only true for upstream, but also downstream scenarios of multiphase pumps. 

While pipeline separation effects are responsible for gas slugs of uncertain duration at pump inlet, downstream issues may even result in a no flow scenario!

An introductory presentation about the issues and challenges envisaged will be given by Ivar Brandt, SPT Group in Norway, who serve the industry with the well-known OLGA simulation program.

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WORKSHOP II LONG DISTANCE SUBSEA POWER TRANSMISSION

New Subsea Installations are often remotely located and thus have to be tied back over long distances to supply control signals and power. Especially the operation of variable speed electric motors poses different challenges. Since there are no submersible DC-Motors available and reliable subsea converters are still in development, AC has to be transmitted over long distances although the losses in the cable are much higher than with DC. In addition the quality of the sinus signal is affected too, and the power system reacts slower to sudden changes of the motor load. These challenges require new solutions that shall be discussed in this workshop.

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WORKSHOP III -HIGH DIFFERENTIAL PRESSURE REQUIREMENTS IN MULTIPHASE SERVICE

Requirements on subsea multiphase pumps to provide very high differential pressures due to very long tie back distances is increasing. The background for this requirement and alternatives will be evaluated. The influence on the multiphase boosting process and consequences on rotors and efficiency will be discussed, latest research results on materials and rotor design will be presented.

Serial installation of multiphase pumps as well as the possibility of developing hybrid-pumps are options to fullfill the high differential pressure requirement.

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