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Apparatus investigates geological aspects of gas hydrates

Oil and Gas Journal

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Abstract

The US Geological Survey has developed a laboratory research system which allows the study of the creation and dissociation of gas hydrates under deepwater conditions and with different sediment types and pore fluids. The system called GHASTLI (gas hydrate and sediment test laboratory instrument) comprises a pressure chamber which holds a sediment specimen, and which can simulate water depths to 2,500m and different sediment overburden. Seawater and gas flow through a sediment specimen can be precisely controlled and monitored. It can simulate a wide range of geology and processes and help to improve understanding of gas hydrate processes and aid prediction of geohazards, their control and potential use as an energy source. This article describes GHASTLI and how it is able to simulate natural conditions, focusing on fluid volume, acoustic velocity-compressional and shear wave, electric resistance, temperature, pore pressure, shear strength, and permeability.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Apparatus investigates geological aspects of gas hydrates
Series title:
Oil and Gas Journal
Volume
97
Issue:
40
Year Published:
1999
Language:
English
Publisher:
PennWell Publ Co
Publisher location:
Tulsa, OK, United States
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Oil and Gas Journal
First page:
63
Last page:
70
Number of Pages:
8