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DOI | 10.1029/2018GL078507 |
Pore-Scale Visualization of Methane Hydrate-Bearing Sediments With Micro-CT | |
Lei, Liang; Seol, Yongkoo; Jarvis, Karl | |
2018-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:11页码:5417-5426 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | X-ray computed tomography (CT) has become a critical technique in the study of porous media. It has attracted growing attention for analyzing hydrate-bearing sediment, but this has been done using surrogates (Xe/Kr) only due to difficulties in distinguishing methane hydrate from water. This study presents the successful imaging of methane hydrate coexisting with pore liquid, gas, and sediments. We used potassium iodide (KI) solutions and in-line propagation-based phase-contrast CT analysis of X-ray attenuation and diffraction to distinguish the four materials. Thus, consideration for CT-related X-ray physics was necessary to optimize KI concentrations, improve material separation with X-ray propagation, and properly interpret artifacts within the images. The images clearly show methane hydrate in the pore space of sand (similar to 250 mu m) coexisting with KI solution and gas. Following this, X-ray CT can now be used to visualize pore habits of natural methane hydrate in sediment cores. |
英文关键词 | micro-CT methane hydrate pore-scale visualization phase-contrast CT |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436249900023 |
WOS关键词 | RAY COMPUTED-TOMOGRAPHY ; EASTERN NANKAI TROUGH ; CONTRAST ; OPTIMIZATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26649 |
专题 | 气候变化 |
作者单位 | US DOE, Natl Energy Technol Lab, Morgantown, WV 26508 USA |
推荐引用方式 GB/T 7714 | Lei, Liang,Seol, Yongkoo,Jarvis, Karl. Pore-Scale Visualization of Methane Hydrate-Bearing Sediments With Micro-CT[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5417-5426. |
APA | Lei, Liang,Seol, Yongkoo,&Jarvis, Karl.(2018).Pore-Scale Visualization of Methane Hydrate-Bearing Sediments With Micro-CT.GEOPHYSICAL RESEARCH LETTERS,45(11),5417-5426. |
MLA | Lei, Liang,et al."Pore-Scale Visualization of Methane Hydrate-Bearing Sediments With Micro-CT".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5417-5426. |
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