The Vx Spectra* surface multiphase flowmeter uses advanced full-gamma spectroscopy to accurately capture multiphase flow dynamics while enabling real-time data monitoring and analysis, helping you make better-informed decisions to maximize your reservoir productivity.
The new flowmeter uses full gamma spectroscopy to provide the highest accuracy in multiphase production measurement. The flowmeter introduces two new venturi throat sizes adapted to an extended range of flow rates. The Vx Spectra 19mm monitors low-rate producing wells down to 30 bbl/d, and the 40mm venturi version introduces a mid-range multiphase meter with high flexibility to match oil and gas production flow rates. Modular design configurations offer easy integration with operators’ production facilities.
To confirm the metrological performance of the Vx Spectra surface multiphase flowmeter, extensive testing was conducted, acquiring more than 400 test points at four industry reference flow loop metering facilities. Tests were conducted with various fluids and at different pressures and flow regimes.
Applications
▪ Offshore topside and land production well testing
▪ Continuous production monitoring
▪ Fiscal allocation and custody transfer
▪ Well performance evaluation
▪ Artificial lift system surveillance and optimization
▪ Flow rate measurement in unstable, foaming, or emulsion-prone wells and in low-rate producers
▪ Production measurement for resources ranging from heavy oils to gas condensates
Benefits
■ Accurate flow rate measurements under unstable flow conditions
■ Highly accurate phase measurements unaffected by foams or emulsions
■ Understanding of well dynamics
■ Elimination of major pressure loss in the production stream
■ Precise allocation factor
■ Delivery of real-time measurements
■ Updated flow rates for reservoir monitoring and production forecast
■ Reduced field development costs
■ Unmanned metering operations
■ Simplified surface systems
■ Significant space savings with smaller footprint compared with bulk tanks or separator
■ Easy to maintain
Features
■ Full-gamma spectroscopy
■ Proven metrological performance against reference flow loops
■ Single-point measurement
■ New sizes that expand operating envelope
■ High-frequency measurement for detailed flow dynamics
■ Compact, robust design
■ Modular system with versatile configuration
■ Remote operation and data acquisition
Metrology
Full-spectrum analysis
Current nuclear interpretation relies on empirical correlation to correctly allocate photons to the proper energy-level window. The Vx Spectra flowmeter uses full-gamma spectroscopy to precisely measure in all energy levels of the gamma-source spectrum, providing the most accurate individual oil, gas, and water fraction measurements to date.
High-frequency, single-point measurement
Based on the robust principle of Vx* multiphase well testing technology, the Vx Spectra flowmeter is the only multiphase meter in the industry that measures in high frequency at a single point in the venturi throat, thereby avoiding cross correlation of measurements from multiple locations throughout the system. This technique ensures accurate and repeatable flow rate measurements in any multi- phase flow regime and in production fluids ranging from heavy oil to wet gas.
Improved production allocation factor
Accurate production monitoring secures a precise allocation factor that helps you make better-in- formed decisions to maximize reservoir productivity.
Reduced footprint
Specially engineered for surface production facilities, the compact Vx Spectra flowmeter saves significant rig space on offshore platforms compared with conventional metering equipment.
Greater reliability
Its modular design and advanced electronic components increase reliability to minimize downtime and reduce running costs while improving measurement integrity.
Modular equipment
With a highly versatile configuration, the Vx Spectra flowmeter allows customization to fit your surface equipment requirements.
Expand the operating envelope with four venturi sizes
Based on more than 15 years’ experience in multiphase flowmetering, three new venturi throat sizes are available in the Vx Spectra flowmeter to expand the operating envelope.
▪ The 19-mm venturi version successfully monitors low-rate producers.
▪ The 29-mm and 40-mm venturi versions introduce solutions to midrange multiphase metering operations and are appplicable to the majority of the world’s oil production fields.
▪ The 65-mm venturi version addresses high-rate oil producers and the majority of wet gas flow rates worldwide.
Data Management and Analysis
Maximize the value from high-frequency production data with continuous online monitoring
Production data analysis and diagnostics
Extract the maximum benefit from high- frequency multiphase flow measurements with PRODcast Vx* production testing monitoring software. Historical and real-time data can be analyzed by functional workflows fed by SCADA, historians, and corporate databases. PRODcast Vx software is built on the Avocet* production operations software platform, and the solution stores and manages your production testing data.
■ Optimize well testing programs to accelerate field production allocation through high- frequency and reliable measurements.
■ Monitor production measurements obtained by the Vx Spectra flowmeter in a collaborative interface linked to your local connectivity infrastructure.
■ Remotely access automated equipment verification of permanently installed Vx technology flowmeters for enhanced operations planning and reduced costs.
■ Integrate historical and real-time validated data with production optimization workflows.
Well test management
PRODcast Vx software enables the continuous evaluation of production tests for one well
or a group of wells to optimize the well test sequence, frequency, and duration. Users can apply unique practices to each well based on behavior, instead of using a standard approach. The streamlined workflow is integrated with traceable actions for production test validation.
■ Identify well test candidates
■ Quickly validate production well tests
Reduce well test rejection rates with an intuitive interface linked to your production data repository.
More than 800 flow loop test points verify Vx Spectra flowmeter accuracy and reliability under diverse condition.
Physically testing a multiphase flowmeter in flowing conditions, rather than relying on error propagation calculations or similar analytical techniques, is critical to accurately verify metrological performance.
Flow loop testing lets you test multiphase flowmeter performance against redundant single-phase flowmeters that guarantee a high-quality reference measurement. These tests precisely evaluate multiphase measurement accuracy by minimizing all possible unknowns in a controlled environment.
The Vx Spectra multiphase flowmeter was tested for robustness and accuracy using an extensive test matrix performed at different metering reference facilities—Alfa Laval Flatøy, OneSubsea Horsøy, SINTEF, NUS, DNV GL and NEL—in both wet-gas and high-viscosity flow loops.
During testing, the Vx Spectra flowmeter acquired more than 800 flow loop points, which were performed with varying pressures, test fluids, and different flow regimes. Results confirmed excellent metrological accuracy and repeatability, independent of a reference test flow loop facility.
Enhance production testing and monitoring with the only multiphase flowmeter that accurately measures multiphase flow rates using full-spectrum analysis.
With industry-leading metrology delivered in a compact design, the Vx Spectra surface multiphase flowmeter provides a precise production outlook for your reservoir development decisions, so you can be certain.
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