Custody Transfer and Fiscal Metering (Oil and Gas)

http://www.newparadigm.ab.ca/info/New/VGFootPrints.ppt

You might also want to check out this company. They have worked closely with the NBS and Shell Oil. http://measurementtech.com/

Dear synchronicityengineering

just a tip, if you highlight your word you wish to hotlink, then right click, select 'create link', you can enter the url for the link and the code will build a hyperlink for you. like this

Chris

Foot printing could refer to the initial flowcurves of the meters you are using in the metering system.

Beside this it is known that certain meters' technologies have recognisible flowpattern. Whatever manufacturer you choose the shape of the flowcurve will always be the same. That could also be the reference to "foot printing"

Normally what we would do for a flowmetering system is to calibrate and linearise the meters.

For gas metering, you would have to send the meters in a flow lab before start-up and for periodic recalibration.

For liquid metering, you would have to send the meters in a flow lab before start-up. You would have a stationary or mobile calibration mean that will allow you to recalibrate the meter locally. Such as reservoir gaging or even better a calibration loop called flow prover (bidirectional, single direction, piston style).

You also have technologies that do no require a flowcalibration : orifice plates. But they represent a lot of operating and installation constraint and the turn-down ratio is not good.

This subject is vast. I do not want to write a book on it. Hopefully my comment will have addressed your question.