Method And Apparatus For Identifying Fluid Attributes
First Claim
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1. A method comprising:
- measuring absorbance by a sample of a formation fluid at a plurality of wavelengths of electromagnetic radiation with a spectrometer; and
distinguishing between multiple fluid types to identify a fluid type of the sample most likely to match an actual fluid type of the sample based on the measured absorbance at two or more wavelengths of the plurality of wavelengths.
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Abstract
A method for identifying the type of a sampled formation fluid, such as a hydrocarbon, is provided. In one embodiment, the method includes measuring absorbance by a sample of a formation fluid at multiple wavelengths of electromagnetic radiation with a spectrometer. The method also includes distinguishing between multiple fluid types to identify a fluid type of the sample most likely to match an actual fluid type of the sample based on the measured absorbance at two or more wavelengths of the multiple wavelengths. Additional systems, devices, and methods are also disclosed.
25 Citations
20 Claims
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1. A method comprising:
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measuring absorbance by a sample of a formation fluid at a plurality of wavelengths of electromagnetic radiation with a spectrometer; and distinguishing between multiple fluid types to identify a fluid type of the sample most likely to match an actual fluid type of the sample based on the measured absorbance at two or more wavelengths of the plurality of wavelengths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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irradiating a formation fluid with light having at least a first wavelength and a second wavelength; detecting a portion of the light that is transmitted through the formation fluid; calculating a first optical density of the formation fluid with respect to the first wavelength of light and a second optical density of the formation fluid with respect to the second wavelength of light; deriving an optical density ratio from the first optical density and the second optical density; and characterizing a physical attribute of the formation fluid based on the optical density ratio. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus comprising:
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a downhole sampling tool including an intake configured to receive a formation fluid within the downhole sampling tool and a downhole fluid analysis module having a spectrometer and configured to enable measurement of optical densities of the received formation fluid at different wavelengths of electromagnetic radiation; and a controller operable to characterize a fluid type of the received formation fluid using the optical densities of the received formation fluid. - View Dependent Claims (17, 18, 19, 20)
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Specification