Back to results
US 2017/0363542 A1Published application
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.
Claims19
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;
- computing an optical density of the target fluid using the received optical densities of the fluid sample at the plurality of wavelengths;
- 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.
2 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;
- compute an optical density of the formation fluid using the received optical densities of the fluid sample at the plurality of wavelengths;
- and
- determining, based on the computed optical density of the formation fluid, a level of contamination by the contaminant in the fluid sample.
2 more elements
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 optical densities of the contaminant at the plurality of wavelengths;
- computing optical densities of the target fluid at the plurality of wavelengths based on the received optical densities of the fluid sample at the plurality of wavelengths using a relationship between optical densities at multiple wavelengths for a first type of formation fluid;
- computing a composition of the target fluid based on the computed optical densities of the target fluid;
- determining, based on the composition, whether the target fluid is of a second type of formation fluid different from the first type of formation fluid;
- in response to determining that the target fluid is of a second type of formation fluid different from the first type of formation fluid, re-computing optical densities of the target fluid at the plurality of wavelengths based on the received optical densities of the fluid sample at the plurality of wavelengths using a relationship between optical densities at multiple wavelengths for the second type of formation fluid;
- and
- determining, based on the computed optical densities of the contaminant and the re-computed optical densities of the target fluid, a level of contamination by the contaminant in the fluid sample.
5 more elements
Dependencies are inferred from the claim text.