Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2009-08-14
2011-10-25
Koval, Melissa (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S307000, C702S012000
Reexamination Certificate
active
08044662
ABSTRACT:
In some embodiments, apparatus and systems, as well as methods, may operate to acquire data representing a plurality of nuclear magnetic resonance (NMR) echo trains associated with a material, such as a geological formation. Additional operations may include inverting a model of at least one of the plurality of NMR echo trains to provide an estimated distribution of transverse relaxation time constants, inverting models of selected ones of the plurality of NMR echo trains using the estimated distribution of transverse relaxation time constants to provide an estimated diffusion distribution, and inverting a model of selected ones of the plurality of NMR echo trains, using the estimated distributions of transverse relaxation time constants and diffusion, to provide an apparent and an intrinsic probability density function to identify fluid types in the material.
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Cherry Ronald E.
Fransson Carl-Magnus
Hara Fransson, legal representative Carla B.
Baldridge Benjamin M
Halliburton Energy Service,s Inc.
Koval Melissa
Schwegman Lundberg & Woessner, P.A.
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