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Multiple Wire-Mesh Sensors Applied to the Characterization of Two-Phase Flow inside a Cyclonic Flow Distribution

César Y Ofuchi1,2, Henrique K Eidt3,4, Carolina C Rodrigues5,6

  • 1Graduate Program in Electrical and Computer Engineering (CPGEI), Federal University of Technology-PR, Curitiba 80230-901, Brazil. ofuchi@utfpr.edu.br.

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Wire-mesh sensors effectively studied gas-liquid slug flow in subsea oil and gas separation equipment. This research demonstrated improved flow distribution, potentially reducing the size of subsea gas-liquid separators.

Keywords:
cyclonic chamberflow distributionsubsea gas–liquid separationtwo-phase flowwire-mesh

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Area of Science:

  • Multiphase flow dynamics
  • Chemical engineering
  • Offshore oil and gas technology

Background:

  • Wire-mesh sensors are crucial for measuring gas-liquid two-phase flow in industrial settings.
  • Subsea phase separation in the oil and gas industry requires precise understanding of flow behavior.

Purpose of the Study:

  • To investigate gas-liquid slug flow dynamics within a subsea phase separation device.
  • To evaluate the effectiveness of wire-mesh sensors in analyzing flow behavior in novel offshore equipment.

Main Methods:

  • Utilized tomographic wire-mesh sensors and a camera to study flow inside a four-outlet distribution device.
  • Analyzed void fraction profiles and flow symmetry across the outlets.

Main Results:

  • Observed an ascending liquid film and a central gas vortex within the cyclonic chamber due to centrifugal forces.
  • Confirmed symmetrical flow and favored separation of smaller bubbles, crucial for separator sizing.
  • Demonstrated an even flow distribution across outlets with less than 10% variation.

Conclusions:

  • Wire-mesh sensors are successfully applied to novel subsea oil and gas equipment.
  • The studied flow distribution system exhibits promising performance for reducing subsea gas-liquid separator size.