Selective excitation in earth's magnetic field nuclear...

Details Selective excitation in earth's magnetic field nuclear... Selective excitation in earth's magnetic field nuclear...

2007-05-03

2008-09-09

Shrivastav, Brij B. (Department: 2831)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

C324S307000

Reexamination Certificate

active

07423426

ABSTRACT:
A downhole nuclear magnetic resonance method for measuring a property of a formation, the method includes applying a polarizing magnetic field to the formation, the field including a spatial distribution of magnitude; selecting an investigation region of the formation; decaying the polarizing magnetic field according to a decay shape to provide for substantially exciting only nuclei in the investigation region; and measuring signals induced by precession of the nuclei in the investigation region.

REFERENCES:
patent: 3538429 (1970-11-01), Baker, Jr.
patent: 3731752 (1973-05-01), Schad
patent: 4035718 (1977-07-01), Chandler
patent: 4489276 (1984-12-01), Yu
patent: 4536714 (1985-08-01), Clark
patent: 4538109 (1985-08-01), Clark
patent: 4574242 (1986-03-01), Clark et al.
patent: 4584586 (1986-04-01), Kocsi
patent: 4603297 (1986-07-01), Safinya
patent: 4717878 (1988-01-01), Taicher et al.
patent: RE32913 (1989-04-01), Clark
patent: 5055787 (1991-10-01), Kleinberg et al.
patent: 5600330 (1997-02-01), Blood
patent: 5710511 (1998-01-01), Taicher et al.
patent: 5955884 (1999-09-01), Payton et al.
patent: 6002317 (1999-12-01), Pignataro
patent: 6166543 (2000-12-01), Sezginer et al.
patent: 6229422 (2001-05-01), Pignataro
patent: 6348792 (2002-02-01), Beard et al.
patent: 6366086 (2002-04-01), Sen
patent: 6452388 (2002-09-01), Reiderman et al.
patent: 6459262 (2002-10-01), Wisler et al.
patent: 6541979 (2003-04-01), Omeragic
patent: 6556015 (2003-04-01), Omeragic et al.
patent: 6580273 (2003-06-01), Reiderman et al.
patent: 6584408 (2003-06-01), Omeragic
patent: 6690170 (2004-02-01), Homan et al.
patent: 6727705 (2004-04-01), Frey et al.
patent: 6819110 (2004-11-01), Omeragic et al.
patent: 6819112 (2004-11-01), Gianzero et al.
patent: 6891376 (2005-05-01), Hanstein et al.
patent: 6930652 (2005-08-01), Smith et al.
patent: 6933726 (2005-08-01), Chen et al.
patent: 6937021 (2005-08-01), Rosthal
patent: 7023212 (2006-04-01), Chen et al.
patent: 7138897 (2006-11-01), Ninerbo et al.
patent: 7193420 (2007-03-01), Chen et al.
patent: 7202670 (2007-04-01), Omeragic et al.
patent: 2004/0183538 (2004-09-01), Hanstein et al.
patent: 2004/0263414 (2004-12-01), Chen et al.
patent: 2005/0116718 (2005-06-01), Chen et al.
patent: 2005/0140373 (2005-06-01), Li et al.
patent: 2005/0189945 (2005-09-01), Reiderman
patent: 2006/0192561 (2006-08-01), Chesser et al.
patent: 2006/0192562 (2006-08-01), Davydychev et al.
patent: 2006/0253255 (2006-11-01), Omeragic et al.

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