Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2008-08-28
2010-12-07
Shrivastav, Brij B (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S300000
Reexamination Certificate
active
07847544
ABSTRACT:
A system for measuring at least one of a temperature and a pressure of an earth formation is disclosed. The system includes: a downhole tool disposed in a borehole and configured to be movable within the borehole; at least one nuclear quadrupole resonance (NQR) measurement device including a transmitter configured to emit a radiofrequency magnetic field having at least one selected frequency band into the earth formation to cause a component thereof to produce a NQR signal, and a detector configured to detect the NQR resonance signal; and a processor in operable communication with the measurement device and configured to generate NQR data from the NQR signal and calculate at least one of the temperature and the pressure of the earth formation therefrom. A method of measuring at least one of a temperature and a pressure of an earth formation is also enclosed.
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Blanz Martin
Edwards Carl
Kwak Hyung Tae
Baker Hughes Incorporated
Cantor & Colburn LLP
Shrivastav Brij B
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