Japan Geoscience Union Meeting 2022

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[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI32] Drilling Earth Science

Fri. May 27, 2022 9:00 AM - 10:30 AM 201B (International Conference Hall, Makuhari Messe)

convener:Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), convener:Osamu Fujiwara(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Yohei Hamada(Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research), convener:Junichiro Kuroda(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo), Chairperson:Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Junichiro Kuroda(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo), Osamu Fujiwara(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Yohei Hamada(Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research)

10:15 AM - 10:30 AM

[MGI32-10] Selective 3D visualization of pore space in geologic material by impregnation of heavy element-containing liquid

*Yuki Morono1, Go-Ichiro Uramoto2, Kentaro Uesugi3, Akihisa Takeuchi3, Masahiro Yasutake3, Wataru Tanikawa1 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.Kochi University, 3.Japan Synchrotron Radiation Research Institute)

Keywords:X-ray CT, Pore space

Pores are that portion of the rock or sediment volume occupied by components such as water, microbial life, petroleum liquids, and gases. The 3D visualization of them places critical constraints on the physical, chemical, and biological processes and has importance on investigations of materials transport and geomicrobiological processes in geologic materials.
We attempted to visualize the pore space through X-ray computed tomography (CT). However, the pore space filled with water was found to be almost indistinguishable from the spaces filled with organic materials because of the relatively subtle difference in X-ray attenuation compared to the difference to inorganic minerals and grains. Then, we investigated the fluid material that can selectively enhance contrast of the pore space in X-ray CT through introduction of heavy element. The optimization and the examples of the results will be shown and discussed.