Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2007-07-10
2007-07-10
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
10547257
ABSTRACT:
A method and apparatus are provided for determining the gas flow rate of a gas-liquid mixture which has a gas volume fraction (GVF) of at least 85% and which is conveyed along a conduit. The conduit is fitted with a differential pressure flow meter and a fluid densitometer. The method comprises: measuring the pressure difference across the differential pressure flow meter and measuring the density of the mixture using the densitometer; estimating the GVF of the mixture from the measured density; and calculating the gas flow rate from the measured pressure difference and measured density. A corrective term which comprises the estimated GVF is used in the calculation to correct the gas flow rate for the high GVF value of the mixture.
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Destefanis Jody Lynn
Gahlings Steven
Gaudier Dale
Schlumberger Technology Corporation
Thompson Jewel
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