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Testing of pressurised cores containing gas hydrate from deep ocean sediments

Testing of pressurised cores containing gas hydrate from deep ocean sediments
Testing of pressurised cores containing gas hydrate from deep ocean sediments
The recent development and deployment of HYACINTH and IODP PCS pressure cores on the JOIDES Resolution during Expedition 1 of the Indian National Gas Hydrate Program (NGHP-1) has provided some of the first “undisturbed” samples of gas hydrate in fine grained marine sediments. Some samples, once recovered from the seafloor, were subject to rapid depressurization and subsequent immersion in liquid nitrogen, at approximately -196oC, for use in subsequent laboratory test programs. This paper describes the techniques used at Southampton University, the difficulties encountered, and the results obtained from geotechnical testing of these samples. The original intention had been to pressurize and unfreeze the material before testing it in the Gas Hydrate Resonant Column (GHRC) Apparatus. Initial CT scanning of the samples showed that the sample quality might be too poor for such testing, and this proved to be the case. Instead a suite of geotechnical testing was carried out, the results of which are reported and interpreted in this paper.
gas hydrates, pressure cores, geotechnical testing
Clayton, Chris
e5a120ff-6f9d-4ae8-8a98-ca52a0998729
Kingston, Emily
375f31ec-6989-4a9c-a3a2-6322c6fe8204
Priest, Jeffrey
675bad86-ffd1-4054-86bd-27e8e086cd7c
Schultheiss, Peter
231fe1e8-f170-459a-b6e0-6b8bc9eb8c9f
NGHP Expedition 01 Scientific Party
Clayton, Chris
e5a120ff-6f9d-4ae8-8a98-ca52a0998729
Kingston, Emily
375f31ec-6989-4a9c-a3a2-6322c6fe8204
Priest, Jeffrey
675bad86-ffd1-4054-86bd-27e8e086cd7c
Schultheiss, Peter
231fe1e8-f170-459a-b6e0-6b8bc9eb8c9f

Clayton, Chris, Kingston, Emily, Priest, Jeffrey and Schultheiss, Peter (2008) Testing of pressurised cores containing gas hydrate from deep ocean sediments. 6th International Conference on Gas Hydrates (ICGH 2008), Vancouver, Canada. 06 - 10 Jul 2008. 9 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The recent development and deployment of HYACINTH and IODP PCS pressure cores on the JOIDES Resolution during Expedition 1 of the Indian National Gas Hydrate Program (NGHP-1) has provided some of the first “undisturbed” samples of gas hydrate in fine grained marine sediments. Some samples, once recovered from the seafloor, were subject to rapid depressurization and subsequent immersion in liquid nitrogen, at approximately -196oC, for use in subsequent laboratory test programs. This paper describes the techniques used at Southampton University, the difficulties encountered, and the results obtained from geotechnical testing of these samples. The original intention had been to pressurize and unfreeze the material before testing it in the Gas Hydrate Resonant Column (GHRC) Apparatus. Initial CT scanning of the samples showed that the sample quality might be too poor for such testing, and this proved to be the case. Instead a suite of geotechnical testing was carried out, the results of which are reported and interpreted in this paper.

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More information

Published date: 6 July 2008
Venue - Dates: 6th International Conference on Gas Hydrates (ICGH 2008), Vancouver, Canada, 2008-07-06 - 2008-07-10
Keywords: gas hydrates, pressure cores, geotechnical testing

Identifiers

Local EPrints ID: 74457
URI: https://eprints.soton.ac.uk/id/eprint/74457
PURE UUID: 16832ec7-6160-4be6-b3f8-883a8e8e26a8

Catalogue record

Date deposited: 19 Mar 2010
Last modified: 27 Feb 2019 17:33

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