Method and apparatus for a downhole spectrometer based on tunable optical filters
AssigneeBaker Hughes Incorporated
InventorRocco DiFoggio
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Abstract
Thermally tunable optical sensors are used in sampling tools for analysis of samples from a wellbore. The thermally tunable optical sensors generate a series passbands of wavelength emissions and detect attenuation in a signal thereof. The attenuation detected is processed and used to determine aspects of the samples. Analysis may be completed remotely (outside of the wellbore), within the wellbore (during drilling or otherwise), or as a part of another process such as fluid management, transport and refinement.
Claims17
A sampling tool for providing spectroscopic data for a sample from a wellbore, the tool comprising:
- sampling apparatus for collecting the sample and disposing at least a portion of the sample within a sample chamber;
- the sample chamber comprising at least one thermally tunable optical sensor for interrogating the sample and providing sample analysis data to a controller, the controller producing from the sample analysis data the spectroscopic data for the sample.
A method for providing spectroscopic data for a sample from a wellbore, the method comprising:
- collecting the sample from the wellbore;
- disposing at least a portion of the sample within a sample chamber, the sample chamber comprising at least one thermally tunable optical sensor for interrogating the sample and providing sample analysis data to a controller;
- illuminating the sample with a series of passbands of wavelength emissions;
- detecting the series to produce a detection signal;
- providing the detection signal to a processor;
- and, processing the detection signal to provide the spectroscopy data.
A computer program product stored on machine readable media and comprising instructions for providing spectroscopic data for a sample from a wellbore, the instructions for:
- collecting the sample from the wellbore;
- disposing at least a portion of the sample within a sample chamber, the sample chamber comprising at least one thermally tunable optical sensor for interrogating the sample and providing sample analysis data to a controller;
- illuminating the sample with a series of passbands of wavelength emissions;
- detecting the series to produce a detection signal;
- providing the detection signal to a processor;
- and,
- processing the detection signal to provide the spectroscopy data.
Dependencies are inferred from the claim text.