"Non-intrusive gas flow measurement at injection wells on an offshore platform"
Revolutionizing offshore gas flow measurement at injection wells, with non-intrusive ultrasonic technology
Ultrasonic technology transforms injection well monitoring
"During a Gas Injection operation, gas is pumped down into the reservoir deep underground. This gas then spreads and increases the pressure within the oil well. This increase in pressure allows the operator to extract more oil from the reservoir, so it is for this reason that Gas Injection is seen as a pressure maintenance procedure. It is extremely important for process optimisation and safety that the operators know how much gas is used during a Gas Injection procedure. Flow measurement is therefore essential. Extreme process pressures of up to 300 bar, and their associated difficult environmental conditions, make this application challenging, in particular for wetted instrumentation, therefore a reliable, maintenance-free flow measurement solution is needed."
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Product Solutions
The FLUXUS G736 gas flow meter combines precision digital signal processing with the well-known advantages of non-intrusive ultrasonic technology: ease of installation, retrofittable design, high accuracy, and outstanding performance. With 4 ultrasonic transducers operating in reflect mode, 8 independent ultrasonic paths traverse the gaseous medium providing superior flow averaging of up to 4 planes of the pipe section. With this configuration, the G736 flow meter averages out crossflow profile effects and achieves optimum non-intrusive flow compensation for undesirable installation locations where insufficient upstream straight pipe proximity to bends, elbows or other adjacent instrumentation creates flow disturbances.
- Temperature compensated transducers. Our transducers are automatically compensated for ambient temperature changes according to ANSI/ASME MFC-5.1-2011.
- Easy installation without process interruptions - retrofittable and compact design.
- Maintenance-free - no moving parts, no wear and tear, gel/grease-free permanent transducer coupling pads.
Fluid type
All gases
Accuracy
Measurement uncertainty of the measuring system (volumetric flow rate): ±0.3 % of reading ±0,005 m/s (±0.02 ft/s)
Measurement uncertainty at the measuring point (volumetric flow rate): ±1…2 % of reading ±0,005 m/s (±0.02 ft/s)
Measurement uncertainty at the measuring point (volumetric flow rate): ±1…2 % of reading ±0,005 m/s (±0.02 ft/s)
Repeatability
0.15 % of reading ±0,005 m/s (±0.02 ft/s)
The Flexim FLUXUS G721 is a technological breakthrough in the ultrasonic clamp-on volume and mass flow measurement of gases. Highly sophisticated signal filters, faster than ever processing capacities and advanced measurement algorithms make the FLUXUS G721 ultrasonic clamp-on gas flow meter the standard setting measuring solution for any industrial application - even for the most challenging ones. The meter adapts itself automatically to the respective measurement conditions and compensates for flow profile disturbances, such as beam dispersal and structure-borne noise, allowing for even more precise and reliable measurements. Extreme fast measurement cycles enable precise real time monitoring of highly dynamic processes.
- Certified for operation within hazardous areas (FMc Class I Division 2, ATEX/IECEx Zone 2)
- Reliable measurements of wet gas (up to liquid volume fraction of 5%).
- High operational safety with no risk of leaks.
Fluid type
All gases
Accuracy
Measurement uncertainty of the measuring system (volumetric flow rate): ±0.3 % of reading ±0,005 m/s (±0.02 ft/s)
Measurement uncertainty at the measuring point (volumetric flow rate): ±1…2 % of reading ±0,005 m/s (±0.02 ft/s)
Measurement uncertainty at the measuring point (volumetric flow rate): ±1…2 % of reading ±0,005 m/s (±0.02 ft/s)
Repeatability
0.15 % of reading ±0,005 m/s (±0.02 ft/s)
