Multi-channel infrared optical phase fraction meter
US8569686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2013 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Feb 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3559
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that includes first and second wavelength bands. The first wavelength band substantially transmits through first and second phases of the flow stream and is substantially absorbed by a third phase. In contrast, the second wavelength band is substantially absorbed by the second phase relative to the first and third phases. One or more detectors simultaneously detect attenuation of the first and second wavelength bands upon the infrared radiation passing through at least a portion of the flow stream, and a phase fraction of the second phase is determined based on the attenuation. As an example, the first, second and third phases are gas, water and oil, respectively, produced from a well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.