Temperature and pressure sensor using four wave mixing technique
AssigneeBaker Hughes Incorporated
InventorSebastian Csutak
Life of this patent
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Abstract
A sensor for measuring at least one of temperature and pressure in a borehole, the sensor including a mixing medium disposed in a housing adapted for insertion into the borehole, the mixing medium exposed to at least one of the temperature and the pressure; wherein the mixing medium is used for four wave mixing of light to provide a signal that indicates at least one of the temperature and the pressure.
Claims22
A sensor for measuring at least one of temperature and pressure, the sensor comprising:
- a light source;
- and
- a mixing medium in optical communication with the light source and exposed to at least one of the temperature and the pressure;
- wherein four wave mixing of light interacting with the mixing medium provides a signal that indicates at least one of the temperature and the pressure.
A method for measuring at least one of temperature and pressure, the method comprising:
- exposing a mixing medium to at least one of temperature and pressure;
- illuminating the mixing medium with at least two beams of light, wherein the light interacts with the mixing medium using four wave mixing of the light;
- measuring a characteristic of light emitted from the mixing medium as a result of the four wave mixing;
- and
- determining the at least one of temperature and pressure from the measuring.
A system for measuring at least one of temperature and pressure in a borehole, the system comprising:
- a logging instrument;
- a light source;
- and
- a mixing medium disposed in the logging instrument and in optical communication with the light source, the mixing medium configured to be exposed to at least one of the temperature and the pressure;
- wherein four wave mixing of light interacting with the mixing medium provides a signal that indicates at least one of the temperature and the pressure.
Dependencies are inferred from the claim text.