Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2005-01-18
2005-01-18
Gutierrez, Diego (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
Reexamination Certificate
active
06844728
ABSTRACT:
A method and an apparatus for obtaining NMR measurements are disclosed. An NMR measurement apparatus, the measured sample, or both elements may be subjected to motion during the measurement. The envelope of an RF carrier signal is modulated according to an envelope to generate a first sequence of RF pulses. The envelope, the phase of the RF signal, and/or a static magnetic field may be varied during the radiation of the first sequence to substantially saturate a first region of the sample. The first sequence may include additional RF refocusing pulses that, when coupled with movement of the NMR measurement apparatus or sample, may also be used to substantially saturate the first region. A second sequence of RF pulses is radiated to establish a resonance region within the first region and measure an attribute of the sample.
REFERENCES:
patent: 4585993 (1986-04-01), Bottomley
patent: 4682106 (1987-07-01), Vatis et al.
patent: 4986272 (1991-01-01), Riederer et al.
patent: 5023551 (1991-06-01), Kleinberg et al.
patent: 5245282 (1993-09-01), Mugler, III et al.
patent: 5280243 (1994-01-01), Miller
patent: 5447155 (1995-09-01), NessAiver
patent: 5557201 (1996-09-01), Kleinberg et al.
patent: 5629623 (1997-05-01), Sezginer et al.
patent: 5705927 (1998-01-01), Sezginer et al.
patent: 5914598 (1999-06-01), Sezginer et al.
patent: 6051973 (2000-04-01), Prammer
patent: 6163153 (2000-12-01), Reiderman et al.
patent: 6232778 (2001-05-01), Speier et al.
patent: 6237404 (2001-05-01), Crary et al.
patent: 6246236 (2001-06-01), Poitzsch et al.
patent: 6246238 (2001-06-01), Hennig
patent: 6255817 (2001-07-01), Poitzsch et al.
patent: 6291995 (2001-09-01), Speier et al.
patent: 6297632 (2001-10-01), Speier
patent: 6326784 (2001-12-01), Ganesan et al.
patent: 6366089 (2002-04-01), Poitzsch et al.
patent: 6373248 (2002-04-01), Poitzsch et al.
patent: 6392410 (2002-05-01), Luong et al.
patent: 6400149 (2002-06-01), Luong et al.
patent: 6492809 (2002-12-01), Speier et al.
patent: 6518757 (2003-02-01), Speier
patent: 6518758 (2003-02-01), Speier et al.
patent: 6528995 (2003-03-01), Speier et al.
patent: 6531868 (2003-03-01), Prammer
patent: 6531869 (2003-03-01), Speier et al.
patent: 6538438 (2003-03-01), Speier et al.
patent: 6566874 (2003-05-01), Speier et al.
patent: 6570381 (2003-05-01), Speier et al.
patent: 20030020473 (2003-01-01), Speier et al.
patent: WO 9829639 (1998-07-01), None
Ganesan Krishnamurthy
Speier Peter
Echols Brigitte L.
Fetzner Tiffany A.
Gutierrez Diego
McEnaney Kevin P.
Schlumberger Technology Corporation
LandOfFree
Preconditioning spins near a nuclear magnetic resonance... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preconditioning spins near a nuclear magnetic resonance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preconditioning spins near a nuclear magnetic resonance... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3407081