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US 11,029,248 B2Granted
Determining a contamination level of a fluid sample
AssigneeSchlumberger Technology Corporation
InventorRonald E. G. van Hal
Life of this patent
Estimating the term…
Abstract
In some examples, an optical density of a contaminant in a fluid sample is computed. An optical density of a target fluid in the fluid sample is computed using optical densities of the fluid sample at a plurality of wavelengths. Based on the computed optical density of the contaminant and the computed optical density of the target fluid, a level of contamination by the contaminant in the fluid sample is determined.
Claims11
A method of a system comprising a processor, comprising:
- receiving optical densities of a fluid sample at a plurality of wavelengths, the fluid sample comprising a target fluid and a contaminant;
- computing an optical density of the contaminant;
- determining a correlation factor based on a relationship between target fluid optical densities at multiple wavelengths;
- computing an optical density of the target fluid using the received optical densities of the fluid sample at the plurality of wavelengths and the correlation factor;
- and
- determining, based on the computed optical density of the contaminant and the computed optical density of the target fluid, a level of contamination by the contaminant in the fluid sample;
- wherein the relationship is between differences between optical densities of the target fluid at a first pair of wavelengths and differences between optical densities of the target fluid at a second pair of wavelengths where at least one of the wavelengths in one pair of the first and second pairs of wavelengths is not present in the other pair of the first and second pairs of wavelengths.
4 more elements
A system comprising:
- at least one processor to:
- receive optical densities of a fluid sample at a plurality of wavelengths, the fluid sample comprising a formation fluid and a contaminant;
- determine a correlation factor based on a relationship between formation fluid optical densities at the plurality of wavelengths;
- compute an optical density of the formation fluid using the received optical densities of the fluid sample at the plurality of wavelengths and the correlation factor;
- and
- determine, based on the computed optical density of the formation fluid, a level of contamination by the contaminant in the fluid sample;
- wherein the relationship is between differences between optical densities of the target fluid at a first pair of wavelengths and differences between optical densities of the target fluid at a second pair of wavelengths where at least one of the wavelengths in one pair of the first and second pairs of wavelengths is not present in the other pair of the first and second pairs of wavelengths.
4 more elements
Dependencies are inferred from the claim text.