OTC 2015: Emerson launches wetgas meter

Offshore staff
Houston - Emerson Process Management has introduced the Roxar subsea wetgas meter for production measurement, reduced risk, and improved flow assurance in gas and gas condensate fields.

Hydrates, corrosion, scaling, and water coning in the reservoir challenge offshore gas producers, and are all caused by formation water breakthrough into the well. The new meter allows the earliest possible detection of water from gas wells, said Roxar. It comes with water sensitivity, accuracy, and rapid response together with the industry’s first built-in salinity measurement system.  

Speaking at Emerson Process Management’s OTC press conference, Sharon McCurdy, sales manager, flow metering, said that the meter detects changes in water content as little as ppm, representing “less than a drop of water finely distributed in a volume equal to that of four car fuel tanks.”

It also features what the company says is the industry’s first built-in salinity measurement system – a dedicated salinity probe for gas applications that is fully integrated into the meter. This system alerts the reservoir engineer if formation water is entering the flow

The next generation Roxar subsea Wetgas Meter generates an uncertainty specification of ±0.02% abs water volume fraction at gas void fraction (GVF) 99-100%. The wet gas meter provides real-time, accurate hydrocarbon measurement for operators’ fiscal allocation obligations. This is due to the meter’s multivariate analysis functionality and true three-phase measurement based on a microwave and gamma densitomer. The multivariate analysis functionality also provides pressure, volume, and temperature independence on water fractions - especially in high GVF flows.

The meter’s measurement speed rates at 20 times per second.


Roxar Subsea wet gas meter
Roxar Subsea wet gas meter. Emerson photo.

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