Reduction of motion artifacts in NMR

Electricity: measuring and testing – Particle precession resonance – Using well logging device

Reexamination Certificate

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Reexamination Certificate

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10839478

ABSTRACT:
NMR spin echo signals, acquired on a MWD logging tool, are susceptible to errors magnetic flux density has a gradient and the magnet on the logging tool is moving relative to the earth. The errors can be corrected by having the excitation pulse cover a smaller or a larger volume than the refocusing pulses. Correction may also be made by selective saturation, or by echo averaging.

REFERENCES:
patent: 2346216 (1944-04-01), Fraser
patent: 5023551 (1991-06-01), Kleinberg et al.
patent: 5185574 (1993-02-01), Ehman et al.
patent: 5389877 (1995-02-01), Sezginer et al.
patent: 5705927 (1998-01-01), Sezginer et al.
patent: 6032101 (2000-02-01), Freedman et al.
patent: 6049205 (2000-04-01), Taicher et al.
patent: 6051973 (2000-04-01), Prammer
patent: 6163153 (2000-12-01), Reiderman et al.
patent: 6268726 (2001-07-01), Prammer et al.
patent: 6297632 (2001-10-01), Speier
patent: 6344744 (2002-02-01), Taicher et al.
patent: 6452389 (2002-09-01), Edwards
patent: 6459263 (2002-10-01), Hawkes et al.
patent: 6466013 (2002-10-01), Hawkes et al.
patent: 6518755 (2003-02-01), Edwards
patent: 6566874 (2003-05-01), Speier et al.
patent: 6600316 (2003-07-01), Chen et al.
patent: 6686737 (2004-02-01), Kruspe et al.
patent: 6690167 (2004-02-01), Reiderman et al.
patent: 2004/0008027 (2004-01-01), Prammer
patent: WO01/59484 (2001-08-01), None

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