This project presents the X-ray CT image sets obtained during depressurization of methane hydrate bearing sediments. Particularly, the imaging experiment aims on quantifying the extent of fines migration in sediments containing some fines due to depressurization. In this study, three sediments were tested as follows: (a) Ottawa 20-30 sand with 9%w/w silica silt (b) F110 sand with 11.5%w/w silica silt (c) F110 sand with 6%w/w kaolinite and 4%w/w silica silt. These three are referred to as Sample#1, Sample#2, and Sample#3 in the files. Each experiment was divided into four steps: 1. Gas injection 2. Hydrate formation 3. Water injection 4. Depressurization The details of this experiment can be found in the published paper below: Gyeol Han, Tae-Hyuk Kwon, Joo Yong Lee, and Timothy J. Kneafsey (2018) "Depressurization-induced fines migration in sediments containing methane hydrate: X-ray computed tomography imaging experiments", Journal of Geophysical Research - Solid Earth, DOI:10.1002/2017JB014988.
Han Gyeol (KAIST)
March 9, 2018
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