Spin-lattice and spin-spin relaxation in porous media: A generalized two site relaxation model

Journal Article · Fri Oct 15 00:00:00 EDT 1993 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1993.1404· OSTI ID:5712462

Su, M Y; Nalcioglu, O ^[1]

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1. Univ. of California, Irvine (United States). Dept. of Radiological Sciences

The T[sub 1] and T[sub 2] relaxation times in porous media have been greatly used in the field of petrophysics and biology. The relaxation behavior can be used as a fingerprint of a system, or can provide information on some other parameters which cannot be easily measured. In this paper, the authors investigate the behavior of the T[sub 1] and T[sub 2] relaxation in two types of media, (1) an object consisting of closely packed glass beads and (2) a column of gel beads. They assume a generalized two site relaxation process for both of the objects. This model assumes that the spins in the medium are under two different relaxation modes and the two modes are in fast exchange with each other. The results confirm that the generalized two site relaxation model is applicable for both types of porous media. A possible explanation for the relaxation mechanism is also discussed.

• OSTI ID: 5712462
• Journal Information: Journal of Colloid and Interface Science; (United States), Vol. 160:2; ISSN 0021-9797
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
58 GEOSCIENCES
POROUS MATERIALS
SPIN-LATTICE RELAXATION
SPIN-SPIN RELAXATION
MATHEMATICAL MODELS
PATTERN RECOGNITION
PERMEABILITY
PORE STRUCTURE
SATURATION
SEDIMENTARY ROCKS
WETTABILITY
MATERIALS
MICROSTRUCTURE
RELAXATION
ROCKS
400201* - Chemical & Physicochemical Properties
580000 - Geosciences