Dualstream 2 Subsea

Dualstream 2 is a 3-phase measurement solution for allocation or monitoring gas condensate wells. It is typically used on a per well basis. Installation is typically within the jumper or manifold. It is ideal for fields with high levels of liquid. By only deploying standard redundant sensor systems subsea, all flow computation is carried out topside ensuring minimum intervention during the life of the field topside.

  • Real Time 3-phase data
  • GVF> 90%
  • Low Power
  • Fully redundant sensors
  • MODBUS/SIIS/IWIS Capable

Measurement Application
  • Improve Production
  • Reservoir Management
  • Hydrocarbon Allocation
  • Hydrate Mitigation

  • Specifications +


    Measurement Technique
    Dualstream Venturi
    PLR Propriety Algorithm
    Dual DP Proprietary Algorithm

    Operating Range
    Turndown >8:1
    Gas Mass Fraction 50-100%
    Water Liquid Ratio 0-100%

    Performance (95% confidence level)
    Gas Mass Flow Rate ±2%
    Condensate Mass Flow Rate ±10%
    Water Volume Flow Rate ±1 am3/h

    Repeatability
    Gas Mass Flow Rate <0.40%
    Condensate Mass Flow Rate <2.0%
    Water Sensitivity ±0.2 am3/h

    Permanent Pressure Loss
    Pressure Loss Specific To Application (<1 bar)

    Subsea Sensors
    Solartron ISA SST range subsea sensors comprising
    • Venturi differential pressure sensor with diaphragm seals (gauge pressure as secondary variable)
    • PLR differential pressure sensor with diaphragm seals (gauge pressure as secondary variable)
    • Dual DP device differential pressure sensor with diaphragm seals
    • Temperature

    Communication Options
    Output Options MODBUS, SIIS Level II (CANBUS) or IWIS

    Subsea Power Requirements
    24VDC < 15W
    (includes redundant sensors supplied as standard)

    Installation Requirements
    Horizontal
    Upstream Straight Lengths NONE
    Downstream Straight Lengths NONE

    Topside Data Acquisition
    Options include:
    • Dualstream Flow Computer (Safe Area)
    • Dualstream PC (Safe Area)
    • Dualstream PC (Hazardous Area)

    User Required Inputs
    Hydrocarbon composition


  • Downloads +

  • Guidelines +