Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2007-11-20
2007-11-20
Shrivastav, Brij (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S306000, C324S318000
Reexamination Certificate
active
11167323
ABSTRACT:
A method and apparatus for obtaining a parameter of interest relating to a region proximate a nuclear magnetic resonance (NMR) logging tool suitable for subterranean well logging is disclosed. The nuclei of the region are subjected to a pulsed NMR technique and are productive of NMR logging data, the nuclei of the region characteristically having a longitudinal relaxation time T1distribution and an apparent transverse relaxation time T2appdistribution. In response to the NMR logging data, an R distribution is defined as R=T1/T2app, the T2appand R distributions are processed as separate bins, along with the NMR logging data, according to a two-dimensional inversion model, and a signal intensity map of R versus T2appis provided that is representative of the parameter of interest relating to the region. In response to a high-intensity signal on the map being within a first range of T2appvalues and a first range of R values, the presence of a light hydrocarbon within the region is identified.
REFERENCES:
patent: 5023551 (1991-06-01), Kleinberg et al.
patent: 5291137 (1994-03-01), Freedman
patent: 5486762 (1996-01-01), Freedman et al.
patent: 5498960 (1996-03-01), Vinegar et al.
patent: 5680043 (1997-10-01), Hurlimann et al.
patent: 6032101 (2000-02-01), Freedman et al.
patent: 6331775 (2001-12-01), Thern et al.
patent: 6392409 (2002-05-01), Chen
patent: 6600316 (2003-07-01), Chen et al.
patent: 6714009 (2004-03-01), Heidler
patent: 2002/0149364 (2002-10-01), Edwards
patent: 2002/0153888 (2002-10-01), Kruspe
patent: 2002/0163334 (2002-11-01), Hagiwara
patent: 2002/0163335 (2002-11-01), Prammer
patent: 2002/0175682 (2002-11-01), Chen
patent: 2003/0001569 (2003-01-01), Chen
patent: 2003/0006766 (2003-01-01), Kruspe
patent: 2003/0006769 (2003-01-01), Edwards
patent: 2003/0107374 (2003-06-01), Chen et al.
patent: 2003/0201772 (2003-10-01), Sigal et al.
patent: 2003/0214286 (2003-11-01), Heidler
patent: 2003/0234648 (2003-12-01), Ganesan
patent: 2004/0032257 (2004-02-01), Freedman
patent: 2004/0140801 (2004-07-01), Schoen
patent: 2004/0169511 (2004-09-01), Minh
patent: 2004/0222791 (2004-11-01), Chen
patent: 2004/0251904 (2004-12-01), Corver et al.
patent: 2004/0251905 (2004-12-01), Gozansky
patent: 2005/0040822 (2005-02-01), Heaton
patent: 2005/0078001 (2005-04-01), Abdelhadi
patent: 2005/0104587 (2005-05-01), Akkurt
patent: 2005/0134266 (2005-06-01), Kabasawa
patent: 2005/0231198 (2005-10-01), Beard et al.
patent: 2005/0242807 (2005-11-01), Freedman
patent: 2005/0257610 (2005-11-01), Gillen
patent: 2005/0270023 (2005-12-01), Freedman
patent: 2006/0290350 (2006-12-01), Hursan et al.
PCT International Search Report for International Application No. PCT/US06/25004; International Filing Date of Jun. 22, 2006; Date of Mailing Jun. 8, 2007.
Chen Songhua
Hursan Gabor G.
Baker Hughes Incorporated
Cantor & Colburn LLP
Fetzner Tiffany A.
Shrivastav Brij
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