Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography
Methane hydrate was formed in two moist sands and a sand/silt mixture under a confining stress in an X-ray-transparent pressure vessel. Three initial water saturations were used to form three different methane-hydrate saturations in each medium. X-ray computed tomography (CT) was used to observe loc...
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Lawrence Berkeley National Laboratory
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ftunivnotexas:info:ark/67531/metadc1013053 2023-05-15T17:11:45+02:00 Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography Kneafsey, T. J. Seol, Y. Gupta, A. Tomutsa, L. Lawrence Berkeley National Laboratory. Earth Sciences Division. 2010-09-15 Text https://doi.org/10.2118/139525-PA https://digital.library.unt.edu/ark:/67531/metadc1013053/ English eng Lawrence Berkeley National Laboratory rep-no: LBNL-3997E grantno: DE-AC02-05CH11231 doi:10.2118/139525-PA osti: 992483 https://digital.library.unt.edu/ark:/67531/metadc1013053/ ark: ark:/67531/metadc1013053 Journal Name: SPE Journal; Related Information: Journal Publication Date: 2010 Computerized Tomography 58 54 Water Saturation Hydrates Simulation Cat Scanning Sand Gas Hydrates Pressure Vessels Mixtures Moisture Water Permeability Article 2010 ftunivnotexas https://doi.org/10.2118/139525-PA 2019-07-20T22:07:55Z Methane hydrate was formed in two moist sands and a sand/silt mixture under a confining stress in an X-ray-transparent pressure vessel. Three initial water saturations were used to form three different methane-hydrate saturations in each medium. X-ray computed tomography (CT) was used to observe location-specific density changes caused by hydrate formation and flowing water. Gas-permeability measurements in each test for the dry, moist, frozen, and hydrate-bearing states are presented. As expected, the effective permeabilities (intrinsic permeability of the medium multiplied by the relative permeability) of the moist sands decreased with increasing moisture content. In a series of tests on a single sample, the effective permeability typically decreased as the pore space became more filled, in the order of dry, moist, frozen, and hydrate-bearing. In each test, water was flowed through the hydrate-bearing medium and we observed the location-specific changes in water saturation using CT scanning. We compared our data to a number of models, and our relative permeability data compare most favorably with models in which hydrate occupies the pore bodies rather than the pore throats. Inverse modeling (using the data collected from the tests) will be performed to extend the relative permeability measurements. Article in Journal/Newspaper Methane hydrate University of North Texas: UNT Digital Library SPE Journal 16 01 78 94 |
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University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Computerized Tomography 58 54 Water Saturation Hydrates Simulation Cat Scanning Sand Gas Hydrates Pressure Vessels Mixtures Moisture Water Permeability |
spellingShingle |
Computerized Tomography 58 54 Water Saturation Hydrates Simulation Cat Scanning Sand Gas Hydrates Pressure Vessels Mixtures Moisture Water Permeability Kneafsey, T. J. Seol, Y. Gupta, A. Tomutsa, L. Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
topic_facet |
Computerized Tomography 58 54 Water Saturation Hydrates Simulation Cat Scanning Sand Gas Hydrates Pressure Vessels Mixtures Moisture Water Permeability |
description |
Methane hydrate was formed in two moist sands and a sand/silt mixture under a confining stress in an X-ray-transparent pressure vessel. Three initial water saturations were used to form three different methane-hydrate saturations in each medium. X-ray computed tomography (CT) was used to observe location-specific density changes caused by hydrate formation and flowing water. Gas-permeability measurements in each test for the dry, moist, frozen, and hydrate-bearing states are presented. As expected, the effective permeabilities (intrinsic permeability of the medium multiplied by the relative permeability) of the moist sands decreased with increasing moisture content. In a series of tests on a single sample, the effective permeability typically decreased as the pore space became more filled, in the order of dry, moist, frozen, and hydrate-bearing. In each test, water was flowed through the hydrate-bearing medium and we observed the location-specific changes in water saturation using CT scanning. We compared our data to a number of models, and our relative permeability data compare most favorably with models in which hydrate occupies the pore bodies rather than the pore throats. Inverse modeling (using the data collected from the tests) will be performed to extend the relative permeability measurements. |
author2 |
Lawrence Berkeley National Laboratory. Earth Sciences Division. |
format |
Article in Journal/Newspaper |
author |
Kneafsey, T. J. Seol, Y. Gupta, A. Tomutsa, L. |
author_facet |
Kneafsey, T. J. Seol, Y. Gupta, A. Tomutsa, L. |
author_sort |
Kneafsey, T. J. |
title |
Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
title_short |
Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
title_full |
Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
title_fullStr |
Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
title_full_unstemmed |
Permeability of laboratory-formed methane-hydrate-bearing sand: Measurements and observations using x-ray computed tomography |
title_sort |
permeability of laboratory-formed methane-hydrate-bearing sand: measurements and observations using x-ray computed tomography |
publisher |
Lawrence Berkeley National Laboratory |
publishDate |
2010 |
url |
https://doi.org/10.2118/139525-PA https://digital.library.unt.edu/ark:/67531/metadc1013053/ |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Journal Name: SPE Journal; Related Information: Journal Publication Date: 2010 |
op_relation |
rep-no: LBNL-3997E grantno: DE-AC02-05CH11231 doi:10.2118/139525-PA osti: 992483 https://digital.library.unt.edu/ark:/67531/metadc1013053/ ark: ark:/67531/metadc1013053 |
op_doi |
https://doi.org/10.2118/139525-PA |
container_title |
SPE Journal |
container_volume |
16 |
container_issue |
01 |
container_start_page |
78 |
op_container_end_page |
94 |
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1766068515639394304 |