Relaxation of protons in pores in a sandstone

McCutcheon, A; Wilson, MA; Hartung-Kagi, B; Ooi, K

Relaxation of protons in pores in a sandstone

McCutcheon, A Wilson, MA Hartung-Kagi, B Ooi, K

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Publisher:: American Chemical Society
Publication Type:: Journal Article
Citation:: Journal of Physical Chemistry B, 2002, 106 (11), pp. 2928 - 2932
Issue Date:: 2002-01

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Field	Value	Language
dc.contributor.author	McCutcheon, A	en_US
dc.contributor.author	Wilson, MA	en_US
dc.contributor.author	Hartung-Kagi, B	en_US
dc.contributor.author	Ooi, K	en_US
dc.date.issued	2002-01	en_US
dc.identifier.citation	Journal of Physical Chemistry B, 2002, 106 (11), pp. 2928 - 2932	en_US
dc.identifier.issn	1520-6106	en_US
dc.identifier.uri	http://hdl.handle.net/10453/3515
dc.description.abstract	Proton nuclear magnetic spin-spin relaxation time distributions (T2 distributions) for a water-saturated cylinder of sandstone (radius 6.5 cm and length 17.55 cm) have been studied as a function of drying time. By freezing the sample to -13.7 °C, a proportionality constant of 38.8 ?s/nm was determined that can be used to relate pore size to T2. The results show external water cannot enter some intermediate sized pores of 400 nm diameter; however, these pores are available to water that has been frozen and allowed to thaw. On drying from saturation, water loss commences immediately from pores of the order of 1000 nm and greater and there is a lag period of 51 h before the smaller pores begin to drain. On freezing and then thawing, intermediate sized pores are filled because the large pores are blocked by ice.	en_US
dc.publisher	American Chemical Society	en_US
dc.relation	http://purl.org/au-research/grants/arc/C89804390
dc.relation.ispartof	Journal of Physical Chemistry B	en_US
dc.relation.isbasedon	http://dx.doi.org/10.1021/jp011884r	en_US
dc.title	Relaxation of protons in pores in a sandstone	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	106	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.issue	11	en_US
pubs.volume	106	en_US

Abstract:

Proton nuclear magnetic spin-spin relaxation time distributions (T2 distributions) for a water-saturated cylinder of sandstone (radius 6.5 cm and length 17.55 cm) have been studied as a function of drying time. By freezing the sample to -13.7 °C, a proportionality constant of 38.8 ?s/nm was determined that can be used to relate pore size to T2. The results show external water cannot enter some intermediate sized pores of 400 nm diameter; however, these pores are available to water that has been frozen and allowed to thaw. On drying from saturation, water loss commences immediately from pores of the order of 1000 nm and greater and there is a lag period of 51 h before the smaller pores begin to drain. On freezing and then thawing, intermediate sized pores are filled because the large pores are blocked by ice.

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http://hdl.handle.net/10453/3515