Mass flowmeter - Coriolis

[oillio]

Good Afternoon,

Does anyone work with mass flowmeter such as micro motion.

I would like to understand why there is a difference between the water cut done by the flowmeter and the water cut coming from labo analysis...

Is it the gas effect? how can we correct this difference.

Thank you.

Best Regards,

 

[zdas04]

The MicroMotion infers a flow rate from the displacement of the piping within the meter. That displacement is a function of the density and velocity of the fluid. There are an infinite number of combinations of density and velocity that result in a given displacement. You give the software a snapshot of the fluid properties that you expect to traverse the meter and it does a pretty good job of using that information to develop the proportions of each fluid and a volume flow rate that matches the displacement of that fluid. If your fluid properties are changing with time (as they always do in a well-stream) then if the MicroMotion ever matches the Lab report it would be amazing.

The thing is you will never know which result is closer to average reality. Your sample for the lab was a snapshot. The MicroMotion is looking at data continuously. It could be that the MicroMotion is closer to the cumulative water cut that you're sending to processing than the lab result is. I'd be real careful about applying a correction factor to the data.

David