Determining bound and unbound fluid volumes using nuclear magnet

Details Determining bound and unbound fluid volumes using nuclear magnet Determining bound and unbound fluid volumes using nuclear magnet

1992-12-31

1994-11-08

Snow, Walter E.

Electricity: measuring and testing

Particle precession resonance

Using well logging device

324300, G01R 3320

Patent

active

053630416

ABSTRACT:
A borehole logging tool comprises a Nuclear Magnetic Resonance (NMR) tool and is pulsed according to a selected sequence. An interpretation is performed which involves a singular value decomposition and compression of data obtained by the tool. The compressed data is then subjected to a nonegative, linear least square fit to obtain a distribution function. The distribution function is used in determining bound fluid volume, unbound fluid volume, total porosity, spin-lattice relaxation time, spin-spin relaxation time, and mean relaxation time using only the pulse NMR tool.

REFERENCES:
patent: 4728892 (1988-03-01), Vinegar et al.
patent: 4933638 (1990-06-01), Kenyon et al.
patent: 4973111 (1990-11-01), Haacke et al.
patent: 5023551 (1991-06-01), Kleinberg et al.
patent: 5055787 (1991-10-01), Kleinberg et al.
patent: 5055788 (1991-10-01), Kleinberg et al.
patent: 5218299 (1993-06-01), Dunkel
"User's Manual," IMSL, Inc., 1987, pp. 309-311.
T. C. Farrar and E. D. Becker, Pulse and Fourier Transform NMR, Academic Press, 1971, pp. 18-22.
J. P. Butler et al., "Estimating solutions of first kind integral equations with nonnegative constraints and optimal smoothing," SIAM J. Numer. Anal. vol. 18, No. 3, Jun. 1981, pp. 381-397.
L. L. Latour et al., Journal of Coll. and Interf. Science, vol. 150, No. 2, May 1992, pp. 535-548.
J. E. Dennis, Jr. and R. B. Schnabel, Numerical Methods for Unconstrained Optimization and Nonlinear Equations, Prentice Hall, 1983, pp. 111-152.
M. Abramowitz and I. A. Stegun, Ed., Handbook of Mathematical Functions, Dover Publications, 1972, pp. 228-229.
G. H. Golub and C. F. VanLoan, Matrix Computations, John Hopkins University Press, 1983, pp. 208-218.
E. Anderson et al., Lapack Users' Guide, Society for Industrial and Applied Mathematics, 1992, pp. 25-27.

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