Electricity: measuring and testing – Particle precession resonance – Using well logging device
Patent
1998-11-24
2000-08-22
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Using well logging device
324318, G01V 300
Patent
active
061077976
ABSTRACT:
A logging device for measuring nuclear magnetic resonance characteristics of earth formations surrounding a borehole having means for producing a static magnetic field in formations surrounding the borehole, means for producing an audio frequency magnetic field in the formations, means for rotating the static magnetic field with respect to the audio frequency magnetic field, and means for detecting nuclear magnetic resonance signals from spins in the formation precessing around the earth's magnetic field. A method of measuring nuclear magnetic resonance characteristics of earth formations surrounding a borehole using such a device is also described. In its preferred form, the invention involves an NMR technique and apparatus in which spins in the formations are tipped by adiabatic fast passage, resulting in a relatively large depth of investigation, but does not require treating of the borehole fluid.
REFERENCES:
patent: 4035718 (1977-07-01), Chandler
patent: 4528508 (1985-07-01), Vail, III
patent: 4656422 (1987-04-01), Vail, III et al.
patent: 4710713 (1987-12-01), Strikman
patent: 4717878 (1988-01-01), Taicher et al.
patent: 4724385 (1988-02-01), Vail, III
patent: 4804918 (1989-02-01), Vail, III
patent: 5055787 (1991-10-01), Kleinberg et al.
patent: 5055788 (1991-10-01), Kleinberg et al.
patent: 5332967 (1994-07-01), Shporer
patent: 5363041 (1994-11-01), Sezginer
patent: 5428291 (1995-06-01), Thomann et al.
patent: 5596274 (1997-01-01), Sezginer
patent: 5914598 (1999-06-01), Sezginer et al.
patent: 5977768 (1999-11-01), Sezginer et al.
S. Connolly, G. Glover, D. Nishimura, and A. Macovski, MRM 18, 28, 1991.
Webb, Rev. Sci. Inst., V48, p. 1585, 1978.
Ernst et al., "Principles Of Nuclear Magnetic Resonance In One And Two Dimensions", pp. 91-241, Clarendon Press, 1987.
S. Connolly, D. Nishimura, A. Macovski JMR 83, pp. 324-334, 1989.
M. Garwood and Y. Ke, J. Mag. Res., 94, pp. 511-525, 1991.
T. Hwang, P. Van Zijl and M. Garwood, JMR 124, pp. 250-254, 1997.
R. de Graaf, K. Nicolay, M. Garwood, MRM, 35, pp. 652-657, 1996.
A. Abragam, The Principles Of Nuclear Magnetism, Oxford Univ. Press, 1961 pp. 65-68, 86, Fig. III 5 and III 6.
P. Mansfield, Pulsed Magnetic Resonance, pp. 317-345, 1992.
S.C. Bushong, ScD, "Magnetic Resonance Imaging Physical and Biological Principles", Houston, Texas, pp. 279-297.
Bagguley, D.M.S., "Pulsed Magnetic Resonance: NMR, ESR, And Optics A Recognition Of E.L. Hahn", 1992, pp. 317-345.
Melton and Pollak, JMRA 122, pp. 42-49, 1996.
Solomon, Phys. Rev. Lett. 2, pp. 301-302, 1952.
E.J. Wells And K.H. Abramson, JMR, 1, pp. 378-392, 1969.
Hwang, VanZijil and Garwood, JMR, 133, pp. 200-203, 1998.
Garwood and Ugurbill, "B.sub.1 Insensitive Adiabatic RF Pulses" in "NMR Basic Principles and Progress", M. Ruin and J. Seelig, Eds., pp. 109-144, Springer-Verlag, N.Y., 1992.
A. Tannus and M. Garwood, JMR A 120, pp. 133-137, 1996.
E. Kupce and R. Freeman JMR A 118, pp. 299-303, 1996.
T.L. Hwang and A.J. Shaka, JMR A 112, pp. 275-279, 1995.
M.H. Levitt and R. Freeman JMR 43, pp. 65-80, 1981.
V. Ermakov, J. Bohlen, G. Bodenhausen, JMR A 103, pp. 226-229 1993.
O.A. Trushkin, O.A. Shushnakov, & A.V. Legchenko, "Surface NMR Applied to an Electronconductive Medium", Geophysical Prospecting, 1995, 43, 623-633.
O.A. Shushnakov, "Surface NMR Measurement of Proton Relaxation Times in Medium to Coarse-Grained Sand Aquifier", 1996, Magnetic Resonance Imaging, vol. 14, Nos. 7/8 pp. 959-960.
R.C. Merrick, S.H. Coutruie, & D.L. Best, "An Improved Nuclear Magnetism Logging System and Its Application to Formation Evaluation", Sep. 23-26, 1979, Las Vagas, Nevada, SPE 8361.
Arana Louis
Batzer William B.
Novack Martin M.
Schlumberger Technology Corporation
LandOfFree
Magnetic resonance logging apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic resonance logging apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance logging apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-585012