T
Takuya Ishibashi
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 41
Citations - 811
Takuya Ishibashi is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Fracture (geology) & Permeability (earth sciences). The author has an hindex of 15, co-authored 36 publications receiving 551 citations. Previous affiliations of Takuya Ishibashi include Tohoku University & Pennsylvania State University.
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Frictional stability‐permeability relationships for fractures in shales
TL;DR: In this paper, the authors explore friction-stability-permeability relationships through the concurrent measurement of frictional and hydraulic properties of artificial fractures in Green River shale (GRS) and Opalinus shale (OPS).
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X-ray CT based numerical analysis of fracture flow for core samples under various confining pressures
Noriaki Watanabe,Takuya Ishibashi,Yutaka Ohsaki,Yoshihiro Tsuchiya,Tetsuya Tamagawa,Nobuo Hirano,Hiroshi Okabe,Noriyoshi Tsuchiya +7 more
TL;DR: In this paper, the X-ray CT-based numerical analysis of fracture flow for core samples, recently developed by the authors, was applied to two granite core samples having either mated artificial or a mated natural fracture at confining pressures of 5 to 50 MPa.
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Hydraulic fracturing and permeability enhancement in granite from subcritical/brittle to supercritical/ductile conditions
TL;DR: In this article, hydraulic fracturing experiments were conducted at 200-450°C by injecting water into cylindrical granite samples containing a borehole at an initial effective confining pressure of 40 MPa.
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Beyond-laboratory-scale prediction for channeling flows through subsurface rock fractures with heterogeneous aperture distributions revealed by laboratory evaluation
TL;DR: In this paper, the authors evaluated aperture distributions and fluid flow characteristics for variously sized laboratory-scale granite fractures under confining stress and developed a novel method for predicting fracture aperture distributions beyond laboratory scale.
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Permeability Evolution and Frictional Stability of Fabricated Fractures With Specified Roughness
TL;DR: In this article, the authors performed fracture shearing and fluid flow experiments on artificially fabricated fractures with specified roughness to investigate the role of fracture roughness on frictional properties and permeability evolution, and they observed that rough fractures show high roughness ratio Sq/Lw and return higher frictional strength due to the presence of cohesive interlocking asperities.