Processing NMR data in the presence of coherent ringing

Details Processing NMR data in the presence of coherent ringing Processing NMR data in the presence of coherent ringing

2005-01-04

2005-01-04

Fulton, Christopher W. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

Reexamination Certificate

active

06838875

ABSTRACT:
A method for processing Nuclear magnetic resonance (NMR) well logging data in the presence of coherent transient signals and offsets is disclosed. The method comprises the addition of R and X-Channel transients and offsets to the relaxation model appropriate for a user selected pulse sequence. The effects of the ringing and offsets are automatically compensated for by fitting R and X-Channel spin-echo data to the relaxation model.

REFERENCES:
patent: 4480227 (1984-10-01), Brown
patent: 5291137 (1994-03-01), Freedman
patent: 5486762 (1996-01-01), Freedman et al.
patent: 6049205 (2000-04-01), Taicher et al.
patent: 6069477 (2000-05-01), Chen et al.
patent: 6084408 (2000-07-01), Chen et al.
patent: 6121774 (2000-09-01), Sun et al.
patent: 6166543 (2000-12-01), Sezginer et al.
patent: 6184681 (2001-02-01), Heidler et al.
patent: 6229308 (2001-05-01), Freedman
patent: 6232778 (2001-05-01), Speier et al.
patent: 6255818 (2001-07-01), Heaton et al.
patent: 6344744 (2002-02-01), Taicher et al.
patent: 6388441 (2002-05-01), Chen
patent: 6392409 (2002-05-01), Chen
patent: 6400147 (2002-06-01), Toufaily et al.
patent: 6452389 (2002-09-01), Edwards
patent: 6459992 (2002-10-01), Freedman et al.
patent: 6462542 (2002-10-01), Venkataramanan et al.
patent: 6498484 (2002-12-01), Sun et al.
patent: 6518757 (2003-02-01), Speier
patent: 6522137 (2003-02-01), Sun et al.
patent: 6522138 (2003-02-01), Heaton
patent: 6525534 (2003-02-01), Akkurt et al.
patent: 6531868 (2003-03-01), Prammer
patent: 6534980 (2003-03-01), Toufaily et al.
patent: 6559638 (2003-05-01), Adelerhof
patent: 6559639 (2003-05-01), Minh et al.
patent: 6570382 (2003-05-01), Hurlimann et al.
patent: 6573716 (2003-06-01), Toufaily et al.
patent: 20010033163 (2001-10-01), Sigal et al.
patent: WO 0233444 (2002-04-01), None
McKeon et al., An Improved NMR Tool Design for Faster Logging, pp. 1-14.
Freedman et al., Measurement of Total NMR Porosity Adds New Value to NMR Logging, SPWLA 38thAnnual Logging Symposium , Jun. 15-18, 1997, pp. 1-14.
Sigal et al., A Method for Enhancing the Vertical Resolution of NMR Logs, SPE International, Oct. 1-4, 2000, pp. 733-743.
Akkurt et al., The Key to Improving the Vertical Resolution of Multi-Frequency NMR Logging Tools, SPWLA 42ndAnnual Logging Symposium , Jun. 17-20, 2001.

Affiliated with

Also associated with

Rating

Processing NMR data in the presence of coherent ringing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Processing NMR data in the presence of coherent ringing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing NMR data in the presence of coherent ringing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3371317