Process
The patented Accuflow 2-Phase Series multiphase metering system features a combined vertical and horizontal pipe configuration, engineered for efficient phase separation. Multiphase fluids — oil, water, and gas — enter the vertical section tangentially, creating a cyclonic action that separates the majority of gas, which rises into the gas flow line. Remaining gas carried with the liquid stream enters the horizontal section, where it is fully separated from the liquid.
The liquid level in the horizontal pipe is maintained at the center using a control valve positioned in the gas flow line. The system’s large gas/liquid interface, thin gas-bearing emulsion layer, and quiescent horizontal flow all work together to ensure efficient removal of free gas bubbles from the liquid stream, optimizing measurement accuracy and reliability.
Features
- Measurement uncertainties:
- Water cut / water-liquid ratio (WLR): 2% absolute
- Liquid flow rate: 0.25% of reading
- Gas flow rate: 3% of reading
- Works in 0-100% GVF and all flow regimes
- 100% separation efficiency and complete separation of the gas and liquid phases
- Less than 5 psi / 0.3 bar pressure drop across entire skid
- Uses the most accurate flowmeter technologies (Coriolis for liquid, ultrasonic for gas) with high turndown ratios (>100:1)
- Water cut determination and flow corrections to standard according to API MPMS, ISO, and AGA standards
Benefits
- Smaller, lighter, lower cost, and lower maintenance than conventional well test separators
- High quality, continuous well test data with extra diagnostic data for:
- Evaluating reservoir properties, well performance, and fluid characteristics
- Production optimization
- Reservoir modeling
- Guiding economic decisions
- AI/ML model training
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