A transient-flow syringe air permeameter

In response to the need to better describe spatial variations in permeability, we designed and built a new portable field air permeameter for use on rocks in outcrop and core. In this instrument, a chamber containing a small volume of air in contact with the rock is suddenly increased in volume crea...

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Main Authors: Brown, Stephen, Smith, Martin
Other Authors: Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Format: Article
Language:en_US
Published: Society of Exploration Geophysicists 2014
Online Access:http://hdl.handle.net/1721.1/85013
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author Brown, Stephen
Smith, Martin
author2 Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
author_facet Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Brown, Stephen
Smith, Martin
author_sort Brown, Stephen
collection MIT
description In response to the need to better describe spatial variations in permeability, we designed and built a new portable field air permeameter for use on rocks in outcrop and core. In this instrument, a chamber containing a small volume of air in contact with the rock is suddenly increased in volume creating a vacuum, causing air to flow from the rock into the chamber. The instantaneous chamber volume and the air pressure within it were monitored. We evaluated a theory to allow interpretation of these data for the rock permeability. The theory required knowledge of some difficult-to-determine geometric constants. This difficulty was circumvented in practice through a calibration procedure. We described the theory for the design and construction of this instrument and reviewed some successful uses in field-scale studies of rock permeability heterogeneity.
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spelling mit-1721.1/850132022-09-30T20:53:39Z A transient-flow syringe air permeameter Brown, Stephen Smith, Martin Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Brown, Stephen In response to the need to better describe spatial variations in permeability, we designed and built a new portable field air permeameter for use on rocks in outcrop and core. In this instrument, a chamber containing a small volume of air in contact with the rock is suddenly increased in volume creating a vacuum, causing air to flow from the rock into the chamber. The instantaneous chamber volume and the air pressure within it were monitored. We evaluated a theory to allow interpretation of these data for the rock permeability. The theory required knowledge of some difficult-to-determine geometric constants. This difficulty was circumvented in practice through a calibration procedure. We described the theory for the design and construction of this instrument and reviewed some successful uses in field-scale studies of rock permeability heterogeneity. 2014-02-19T19:14:34Z 2014-02-19T19:14:34Z 2013-07 2013-04 Article http://purl.org/eprint/type/JournalArticle 0016-8033 1942-2156 http://hdl.handle.net/1721.1/85013 Brown, Stephen, and Martin Smith. “A transient-flow syringe air permeameter.” GEOPHYSICS 78, no. 5 (September 2013): D307-D313. © 2013 Society of Exploration Geophysicists en_US http://dx.doi.org/10.1190/geo2012-0534.1 Geophysics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Society of Exploration Geophysicists Society of Exploration Geophysicists
spellingShingle Brown, Stephen
Smith, Martin
A transient-flow syringe air permeameter
title A transient-flow syringe air permeameter
title_full A transient-flow syringe air permeameter
title_fullStr A transient-flow syringe air permeameter
title_full_unstemmed A transient-flow syringe air permeameter
title_short A transient-flow syringe air permeameter
title_sort transient flow syringe air permeameter
url http://hdl.handle.net/1721.1/85013
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