Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2007-10-18
2010-11-16
Arana, Louis M (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S307000
Reexamination Certificate
active
07834622
ABSTRACT:
A magnet assembly for measuring properties of a formation from a borehole, the magnet assembly including a first device and a second device, each device adapted for insertion into the borehole, the first device producing a first magnetic field, the second device producing a second magnetic field; wherein the second magnetic field is configurable for one of reinforcing and reducing the first magnetic field; and wherein the first device comprises a permanent magnet and the second device comprises at least one of one of a switchable magnet and switching windings.
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Beard David R.
Edwards Carl M.
Reiderman Arcady
Arana Louis M
Baker Hughes Incorporated
Cantor & Colburn LLP
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