Dielectric measuring apparatus for determining oil and water mix

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73152, 324318, G01V 100, G01V 300, E21B 4900

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active

051329034

ABSTRACT:
A method and apparatus for measuring a mixture of oil and water in a well borehole is set forth. The measurement is a measurement of mixture dielectric constant obtained by exposing a pair of windows to the mixture of well borehole liquids. Each window is formed in coaxial cable portions having cuts in the respective surrounding ground sheaths thereof wherein the sheaths are positioned so that the windows are adjacent and parallel. The two windows form a gap which may be approximately three times wider than the windows formed in the sheath. A signal generator drives the system at a specified voltage and frequency, and changes in signal coupled between the cables are measured where the changes derive from changes in the dielectric constant of the mixture of oil and water coupled in the circuit.

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patent: 4514693 (1985-04-01), Meador
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patent: 4812739 (1989-03-01), Swanson
patent: 4820970 (1989-04-01), Swanson
patent: 4839594 (1989-06-01), Misic et al.
patent: 4912971 (1990-04-01), Jeambey

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