WATER H-1 SPIN-LATTICE RELAXATION AS A FINGERPRINT OF POROUS-MEDIA

被引：15

作者：

BORGIA, GC

FANTAZZINI, P

MESINI, E

机构：

[1] Istituto di Scienze Minerarie, Università di Bologna, 40136 Bologna

[2] Dipartimento di Fisica, Università di Bologna, 40126 Bologna

来源：

MAGNETIC RESONANCE IMAGING | 1990年 / 8卷 / 04期

关键词：

!sup]1[!/sup]H multiexponential relaxation; Porous media; Restricted geometries; Water diffusion;

D O I：

10.1016/0730-725X(90)90052-4

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The 1H spin-lattice relaxation curves of water in samples of natural porous media can be thought of as "fingerprints" of the porous samples. Also the whole of traditional petrophysical properties (permeability, irreducible water saturation, etc.) can be thought of as "fingerprints" of the porous samples. The characteristics of the pore space determine on one hand the relaxation curve shape, and on the other the petrophysical properties. The understanding of this correspondence can contribute to a better definition of the concept of the architecture of a porous medium. At this purpose we have obtained 1H spin-lattice relaxation curves from a collection of standard sandstone cores of known petrophysical properties and characterized by the same surface properties. The results corroborate the idea that the structure of relaxation curves contains information on the distance scale and on the architecture of the pore space, even if it is difficult to extract it without ambiguities. Different methods of curve fitting were performed and compared with the aim of getting the maximum information from the relaxation curves. Several aspects of this kind of investigation indicate the analogies between 1H response of water confined in porous media and in biological tissues. © 1990.

引用

页码：435 / 447

页数：13

共 51 条

[1]

Baldwin, Yamanashi, NMR imaging of fluid dynamics in reservoir core, Magn. Reson. Imaging, 6, pp. 493-500, (1988)

[2]

Banavar, Schwartz, Magnetic resonance as a probe of permeability in porous media, Phys. Rev. Lett., 58, pp. 1411-1414, (1987)

[3]

Banavar, Schwartz, Probing porous media with nuclear magnetic resonance, Molecular Dynamics in Restricted Geometries, (1989)

[4]

Blackband, Mansfield, Diffusion in liquid-solid systems by NMR imaging, J. Phys. C: Solid State Phys., 19, pp. L49-L52, (1986)

[5]

Blackband, Mansfield, Barnes, Clague, Rice, Discrimination of crude oil and water in sand and in bore cores using NMR imaging, Soc. Petr. Eng. J. Form. Eval., 1, pp. 31-34, (1986)

[6]

Borgia, Fantazzini, Mesini, I fondamenti della risonanza magnetica nello studio di alcune proprieta' dei mezzi porosi saturati con liquidi idrogenati, Boll. AMS, 24, pp. 359-375, (1987)

[7]

Borgia, Fantazzini, Mesini, Analisi critica e controllo sperimentale delle applicazioni della risonanza magnetica allo studio di alcune proprieta' dei mezzi porosi saturati con liquidi idrogenati, Boll. AMS, 25, pp. 1-24, (1988)

[8]

Brown, Fatt, Measurements of fractional wettability of oilfield rocks by the nuclear magnetic relaxation method, Trans. AIME, 207, pp. 262-264, (1956)

[9]

Brown, Comment on “Quantifying solid-fluid interfacial phenomena in porous rock with proton nuclear magnetic resonance”, J. Appl. Phys., 63, (1988)

[10]

Brown, Information available and unavailable from multiexponential relaxation data, J. Magn. Reson., 82, pp. 539-561, (1989)

← 1 2 3 4 5 6 →