Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate
2007-11-01
2009-10-06
Porta, David P (Department: 2884)
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
C250S256000, C250S263000, C250S268000
Reexamination Certificate
active
07598485
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.
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Baker Hughes Incorporated
Boosalis Faye
Cantor & Colburn LLP
Porta David P
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