# US 10,119,930 B2 · Method for non-linear high salinity water cut measurements

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- Number: US 10,119,930 B2
- Document ID: US10119930B2
- Status: Granted
- Kind: B2
- Application number: 15/637,633
- Filed: 2017-06-29
- Published: 2017-12-21
- Granted: 2018-11-06
- Earliest claimed: 2015-01-14
- Assignees: Saudi Arabian Oil Company
- Applicants: Saudi Arabian Oil Company
- Inventors: Michael John Black; Mohamed Nabil Noui-Mehidi
- Web page: https://patentgrep.com/patent/US10119930B2

## CPC

- G01N 27/221: {by investigating the dielectric properties (using microwaves G01N22/00; measuring loss factors or dielectric constants per se G01R27/26)}
- G01N 25/00: Investigating or analyzing materials by the use of thermal means (G01N3/00 - G01N23/00 take precedence)
- G01N 27/223: {for determining moisture content, e.g. humidity (rain detectors on vehicle windows B60S1/0825)}
- G01N 33/2823: {Raw oil, drilling fluid or polyphasic mixtures}
- G01N 33/2835: {Specific substances contained in the oils or fuels}
- G01N 33/2847: {Water in oils}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

The present disclosure relates to a method for determining a water cut value of a composition comprising a hydrocarbon. In some embodiments, the disclosure relates to an apparatus for determining the water cut value of the composition that comprises one or more of a capacitance probe, a temperature probe, a salinity probe, and a computer.

## Claims

### Claim 1

An apparatus for determining a water cut value of a hydrocarbon composition, the apparatus comprising:
a capacitance probe in fluid contact with the hydrocarbon composition and that is operable to induce a frequency value into the hydrocarbon composition, to detect a mixture permittivity value associated with the induced frequency value and to form an associated signal for the detected mixture permittivity value;
a temperature probe in fluid contact with the hydrocarbon composition and that is operable to detect the temperature value of the composition and form an associated signal for the detected temperature value;
a salinity probe in fluid contact with the hydrocarbon composition and that is operable to detect the salinity value of the composition and form an associated signal for the detected salinity value; and
a computer comprising:
a signal processing device having a non-transitory computer memory operable to receive the associated signal for the detected mixture permittivity value, an associated signal for the detected temperature value, and an associated signal for the detected salinity value;
data stored on a readable medium;
a programmed product stored in the non-transitory computer memory, the programmed product comprising instructions that are executable for:
converting the associated signal for the detected mixture permittivity value into detected mixture permittivity;
converting the associated signal for the detected temperature value into the detected temperature value;
converting the associated signal for the salinity value into the detected salinity value;
associating the detected mixture permittivity value of the hydrocarbon composition with the induced frequency value;
converting the detected salinity value into a determined salinity value using data stored on the readable medium;
converting the detected mixture permittivity value into a determined ratiometric mixture permittivity value;
comparing the determined ratiometric mixture permittivity value at the determined salinity and induced frequency values with the data stored on the readable medium; and
determining the water cut value for the hydrocarbon composition.

### Claim 2 (depends on 1)

The apparatus of claim 1 where the data stored on the readable medium includes a complex theoretical model ratiometric mixture permittivity value equation.

### Claim 3 (depends on 1)

The apparatus of claim 1 where the data stored on the readable medium includes an empirically-determined ratiometric mixture permittivity value equation.

### Claim 4 (depends on 1)

The apparatus of claim 1 where the data stored on the readable medium includes empirically-determined data of ratiometric mixture permittivity values, induced frequency values, salinity values and water cut values for a hydrocarbon composition.

### Claim 5 (depends on 1)

The apparatus of claim 1 where the data stored on the readable medium includes detected salinity values, determined salinity values and associated temperature values.

### Claim 6 (depends on 1)

The apparatus of claim 1 where the apparatus is operable to induce a frequency sweepingly into the hydrocarbon composition.

### Claim 7 (depends on 1)

The apparatus of claim 1 where the capacitance probe comprises two or more capacitance probes operable to induce a different frequency value into the hydrocarbon composition.

### Claim 8 (depends on 7)

The apparatus of claim 7 where the two or more capacitance probes comprise at least one capacitance probe capable of inducing a normalization frequency value into the hydrocarbon composition.