Method of measuring fluid phases in a reservoir

Details Method of measuring fluid phases in a reservoir Method of measuring fluid phases in a reservoir

2005-07-19

2005-07-19

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

C073S30400R

Reexamination Certificate

active

06918296

ABSTRACT:
A method identifies a level of each of a plurality of liquids in a reservoir. The method includes using a sensing assembly having first and second electrodes extending along a side of the reservoir, wherein the first and second electrodes combine to form a plurality of capacitors each having a unique capacitance. The method includes the steps of applying an input AC signal voltage to the first electrode. An output AC signal voltage is then measured across the second electrode. The method continues by locating clusters of frequency variations. The method then associates a level identification for each of the plurality of liquids with each of the clusters of frequency variations.

REFERENCES:
patent: 4286208 (1981-08-01), French et al.
patent: 4417472 (1983-11-01), Tward
patent: 4601201 (1986-07-01), Oota et al.
patent: 4733560 (1988-03-01), Dam
patent: 5811677 (1998-09-01), Cournanc
patent: 2004/0149032 (2004-08-01), Sell

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