Our compact well test separators (Accuflows) are the most optimal production multiphase flow measurement solution available. They combine the accuracy of separation with a compact design, bridging the gap between conventional well test separators and multiphase flow meters (MPFMs). They are designed for the highest level of accuracy and reliability while remaining cost-effective.

Key Features

  • Smaller, lighter, and more efficient than conventional well test separator designs
  • 100% separation efficiency and complete separation of the gas and liquid phases
  • Works in 0-100% GVF and all flow regimes
  • Uses the most accurate flowmeter technologies (Coriolis for liquid, ultrasonic for gas) with high turndown ratios (>100:1)
  • Measurement uncertainties:
    • Water cut / water-liquid ratio (WLR):
      • 2-phase: 2% absolute
      • 3-phase: 0.25% absolute
    • Liquid flow rate: 0.25% of reading
    • Gas flow rate: 3% of reading
  • Water cut determination and flow corrections to standard according to API MPMS, ISO, and AGA standards

Comparison with Conventional Well Test Separators

Conventional Separators

  • Inefficient separation → large skids

  • Large pressure vessels → expensive, heavy

  • Large liquid volume → long purges between tests → less tests, batch measurement

  • Gas backpressure and liquid level control valves → high maintenance and pressure drop

  • Often uses outdated flowmeter technologies with low turndown ratios → lower accuracy, limited range

Accuflows

  • Highly efficient separation → smaller skids

  • Piping only → lower cost, lighter

  • Small liquid volume → quick purges between tests → more tests, continuous/real-time measurement

  • No/fewer control valves and flowmeters with no moving parts or flow obstructions → minimal maintenance and pressure drop

  • Uses latest flowmeter technologies with high turndown ratios → high accuracy and rangeability

Comparison with Multiphase Flow Meters (MPFMs)

MPFMs

  • Often require radioactive sources

  • Difficult to achieve good accuracy due to lack of separation, especially at high GVF or water cut

  • Accuracy highly dependent on field calibration

Accuflows

  • No radioactive sources needed

  • Best accuracy possible since phases are separated

  • Flowmeters and water cut meters are factory calibrated