High resolution gamma measurements and imaging

Radiant energy – Geological testing or irradiation – Well testing apparatus and methods

Reexamination Certificate

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C250S366000

Reexamination Certificate

active

07544928

ABSTRACT:
A method for measuring radiation in a borehole, the method including placing a detector comprising a scintillator and a plurality of photodetectors in the borehole; detecting a radiation interaction with a first photodetector; detecting the radiation interaction with at least a second photodetector; and determining a location of the interaction from the detecting; wherein the location provides information regarding formations surrounding the borehole.

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patent: 4618765 (1986-10-01), Sonne
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patent: 5508514 (1996-04-01), Sallwasser et al.
patent: 6308561 (2001-10-01), Samworth et al.
patent: 6619395 (2003-09-01), Spross
patent: 6738720 (2004-05-01), Odom et al.
patent: 6872937 (2005-03-01), Williams et al.

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