METHOD AND APPARATUS FOR DETECTING NAPHTHENIC ACIDS
First Claim
1. A method of determining the concentration of naphthenic acids in formation fluids, said method comprising the steps ofallowing said formation fluids flow through the body of a downhole tool;
- radiating said flow with infrared radiation to obtain infrared absorption parameters at one or more wavelengths under downhole conditions, anddetermining the concentration of said naphthenic acid by converting said absorption parameters.
1 Assignment
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Accused Products
Abstract
A method and apparatus for determining the concentration of organic acids in formation fluids is provided including pumps for pumping fluids from a subterranean formation into the body of a downhole tool and sources for illuminating the flow with infrared radiation to obtain the infrared absorption or a related parameter at one or more wavelengths, and processors for converting the measured absorption into the concentration of the organic acids, using for example a multi-value calibration matrix which relates IR absorption spectral values to concentration measurement under downhole conditions.
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Citations
14 Claims
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1. A method of determining the concentration of naphthenic acids in formation fluids, said method comprising the steps of
allowing said formation fluids flow through the body of a downhole tool; -
radiating said flow with infrared radiation to obtain infrared absorption parameters at one or more wavelengths under downhole conditions, and determining the concentration of said naphthenic acid by converting said absorption parameters. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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2. (canceled)
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9. An apparatus for determining the concentration of naphthenic acids in formation fluids, said apparatus comprising
a flow line for allowing said formation fluids to flow from a downhole formation through a body of said apparatus at a downhole location; -
one or more sources of infrared radiation for radiating flow in said flow line with infrared radiation; one or more detectors to obtain absorption parameters at one or more wavelengths under downhole conditions, and a processor for determining the concentration of said naphthenic acid by converting said absorption parameters. - View Dependent Claims (11, 12, 13, 14)
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10. (canceled)
Specification