Systems and methods for measuring flow rates and densities of th

Details Systems and methods for measuring flow rates and densities of th Systems and methods for measuring flow rates and densities of th

1994-10-24

1996-07-16

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

73200, G01F 1508

Patent

active

055356320

ABSTRACT:
Multiphase fluid flowstreams of gas, oil and water are measured by flowmeters which include an embodiment using a turbine flowmeter and a densitometer with total accuracy in the range of .+-.15%, and an embodiment using a gas-liquid separator and a Coriolis flowmeter for flowstreams of a relatively high gas-to-liquid ratio with accuracies of .+-.5% when the gas carry-over in the liquid flowstream is less than about 5%. A second alternate embodiment includes a water fraction meter, a turbine flowmeter and a densitometer for measuring flows with relatively low gas-to-liquid ratios but accurate measure of the water fraction. A meter capable of handling relatively high gas-to-liquid ratio but with residual gas in the liquid flowstream of less than 5% includes a separator, a Coriolis meter for measuring the liquid density and mass flow rate in the liquid flowstream and a densitometer and turbine flowmeter for measuring the fluid in the gas flowstream leaving the separator. A fourth alternate embodiment includes a turbine flowmeter and a densitometer in both flowstreams leaving the separator and a water fraction meter in the liquid flowstream wherein mixtures with high gas-to-liquid ratio and residual gas in the liquid flowstream of up to about 20% may be measured.

REFERENCES:
patent: 4688418 (1987-08-01), Cheung et atl.
patent: 4760742 (1988-08-01), Hatton
patent: 4773257 (1988-09-01), Aslesen et al.
patent: 4776210 (1988-10-01), Baillie et al.
patent: 4852395 (1989-08-01), Kolpak
patent: 4881412 (1989-11-01), Northedge
patent: 5090253 (1992-02-01), Kolpak
patent: 5127272 (1992-07-01), Dean et al.
patent: 5211842 (1993-05-01), Tuss et al.
patent: 5224372 (1993-07-01), Kolpak

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