A method for determination of gas and water rates from different separate layers based on the data of the temperature and pressure profiles along the wells is developed. The developed physics model is based on the first principles of mass, moment and energy conservations of flowing fluid along the wellbore column. It allows prediction of flow rate depth distribution in the well. Temperature and pressure depth profiles from gas production well in gas field (Australia) have been treated to determine the gas rates from different production layers. The accumulated rates measured in the field are compared to the modeling results, showing good accuracy of the model predictions. Compared to traditional flow metering, the proposed method is advantageous in low-flow-rate unconventional gas reservoirs.

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