Coaxial two port waveguide flowline sensor

Details Coaxial two port waveguide flowline sensor Coaxial two port waveguide flowline sensor

1996-06-07

1997-10-14

Snow, Walter E.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

Including borehole fluid investigation

324639, 7315218, G01V 330, G01N 2200, E21B 4900

Patent

active

056776314

ABSTRACT:
A two-port, coaxial, waveguide flowline sensor for transmitting TEM mode electromagnetic radio frequency signals through borehole fluids flowing through a longitudinal flowline cavity of the waveguide. The waveguide flowline sensor responds to changes in the conductivity, dielectric constant, and state of the fluid at high borehole temperatures and pressures. The sensitivity of the sensor is enhanced by impedance mismatches between two feedthrough waveguides comprising the ports of the sensor, and a flowline cavity waveguide.

REFERENCES:
patent: 5341100 (1994-08-01), Taylor

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