At the Haynesville Shale well I visited I noticed that there were two separate meter boxes showing current and cumulative flow rates for the well.  Is the flow the total of these two numbers, or do they have two meters and average the numbers to obtain the production?   

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Bud, each meter will provide information for current flow rate, cumulative flow, pressure, temperature, etc. Did you notice if there were two separate meter runs are two meter boxes for a single meter run?
I think it was two meter boxes on a single run, but I am not certain of that.
One is a sales meter and the other is the check meter. The production company will install and test one of the meters while the pipeline company will install and test the other. The details of the contract will dictate who is the sales and who is the check meter. Having two meters on the same meter run is common and acceptable. While both meters may not show the exact readings on spot rates, they should equal out over the month. Any discreptancy is cause to have both meters recalibrated. Either meter should give you an accurate flow rate for the well if it can be accessed. I have seen some meters that will only display the data if you have an access code while others scroll the data in a loop. There are some operators that require two seperate meter runs but this does not increase nor decrease the accuracy of the readings but allows more options for the operators and the ability to use more than 2 meters. I hope this helps.
Thanks. This is a well that had just in production about 2-3 weeks. Both meters were displaying the data in a loop. The cumulative readings on the two meters were within about 1% of each other, so they still may be in the calibration mode.
Bud, sometimes there will be two flow computers (boxes) for a single physical meter with the pipeline company's being the official sales volume and the production company's just providing operational information for monitoring the well's production. More typically there would be a single flow computer (box) with both the pipeline company and production company having access to the output information.

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