Sam Gavin Gibbs

Bernard Nolen

A method of inferring gas production utilizing a conduit having an outlet controlled by a valve in communication with a space within a well through which a gas volume is being produced. A selected number of measurements are taken during a selected period of time, with each measurement including closing the outlet valve to allow gas pressure within the conduit to change, sampling the gas pressure within the conduit over a sampling time period, calculating a rate of pressure change from samples taken over the sampling time period, and calculating a rate of gas production in the conduit from the calculated rate of change of pressure, the gas volume, well characteristics and gas properties. The calculated rates of gas production for the selected number of measurements are summed to determine an inferred rate of gas production through the conduit during the selected period of time.

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Midland, TX, United States of America

Bernard Nolen