Downhole multiphase flow sensor

Details Downhole multiphase flow sensor Downhole multiphase flow sensor

1996-05-15

1998-04-07

Dougherty, Elizabeth L.

Measuring and testing

Borehole or drilling

Fluid flow measuring or fluid analysis

7315218, 7315219, 7315221, 7315229, E21B 4900

Patent

active

057366373

ABSTRACT:
A system for evaluating multiphase flow of a fluid downhole in a borehole. Dielectric permittivity electrodes generate a capacitance output signal through the fluid, and conductivity electrodes generate a conductivity output signal through the fluid. The electrodes are powered with an AC generator operating at the same or different frequencies. The capacitance and conductivity output signals can be alternately generated by operating a controller, and such signals can be combined with a multiplexer engaged with the controller. The signal can be processed downhole or can be transmitted to a receiver positioned at the well surface for processing and interpretation of the multiphase data.

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patent: 5596150 (1997-01-01), Arndt et al.

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