We delivered the recent result of our research in YSRM 2019 & REIF 2019.
Monday, December 2, 2019
Oral session 3-2 (Room 3): Rock fracture/fractured rock mass
3-2-4 Introduction of natural fracture information to induced seismicity analysis
Yusuke Mukuhira, Martin Ziegler, Takatoshi Ito, Hiroshi Asanuma and Markus O. Häring
YSRM 2019 & REIF 2019
https://www.ec-pro.co.jp/ysrm2019/index.html
S11F-0383 Understanding of the physics of induced seismicity from natural fracture and in-situstress information from borehole logging
Yusuke Mukuhira1, Martin Ziegler2 and Takatoshi Ito1, (1)Tohoku University, Institute of Fluid Science, Sendai, Japan, (2)ETH Swiss Federal Institute of Technology Zurich, Zürich, SwitzerlandAbstractMonday, 9 December 2019 08:00 – 12:20Moscone South – Poster Hall
S11F-0391 Comparative Study of Low-magnitude Earthquake Detection Techniques for Use with Dense Seismic Monitoring Arrays: Applications for Induced Seismicity Monitoring
Michael C Fehler1, Oleg Poliannikov2, Yusuke Mukuhira3, Paul Wyer4, Brian deMartin4 and Nori Nakata1, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)Massachusetts Institution of Technology, Cambridge, MA, United States, (3)Tohoku University, Institute of Fluid Science, Sendai, Japan, (4)ExxonMobil Upstream Research Company, Spring, TX, United StatesAbstractMonday, 9 December 2019 08:00 – 12:20Moscone South – Poster Hall
OS34A-04 Singular Behavior and Its Control of Hydraulic Fracture in Sands Verified in Laboratory Experiments with Aid of CT Scanner
Takatoshi Ito1, Hyuga Yoshida2, Yusuke Mukuhira1, Koji Yamamoto3 and Yoshihiro Tsuchiya4, (1)Tohoku University, Institute of Fluid Science, Sendai, Japan, (2)Tohoku University, Sendai, Japan, (3)Japan Oil, Gas and Metals National Corporation (JOGMEC), Tokyo, Japan, (4)Japan Oil, Gas and Metals National Corporation (JOGMEC), Chiba, JapanAbstractWednesday, 11 December 2019 16:45 – 17:00Moscone West – 2002, L2
地熱学会2019@熊本にて最近の研究成果を発表しました。
注水による断層すべりの発生機構に関するシミュレーション横山佳祐, 椋平祐輔, 伊藤高敏 日本地熱学会令和元年学術講演会（熊本大会） 2019年11月22日
地殻応力情報を用いた微小地震の断層面解範囲絞り込み椋平祐輔, 直井 誠, Michael C. Fehler, 森谷祐一, 伊藤高敏, 浅沼 宏, Markus Häring 日本地熱学会 令和元年学術講演会（熊本大会） 2019年11月22日
We have Dr. Xiaodong Ma in our lab as an academic guest from ETH Zurich for collaborative study and participation of ICFD2019.
This invitation is supported by Collaborative Research Project of the Institute of Fluid Science, Tohoku University.
We had several oral and poster presentations at ICFD 2019. Also we invited Dr. Xiaodong Ma from ETH Zurich and he presented the our collaborative research progress.
CRF-4: Application of Core-based Inversion to Reconstruct Stress Field in an Underground Geoscience Laboratory
X. Ma, Y. Mukuhira, T. Ito
CRF-5: Validation of Fracture Permeability Estimated by Integrated Approach of Microseismic Observations and Reservoir Engineering Modeling
M. Yang, Y. Mukuhira, J. H. Norbeck, J. L. Rubinstein
CRF-R3: Link Between Tracer and Microseismic Analysis to Comprehensive Understanding of Hydraulic Feature of Fractured Geothermal Reservoir
A. Suzuki, Y. Mukuhira, R. N. Horne, A. Abe, A. J. Howkins, T. Ishibashi, P. K. Kang
http://www.ifs.tohoku.ac.jp/icfd2019/
USTCのDr. Baoshan Wangに研究室にご来訪頂き，下記の通りセミナーを実施します。Dr.Wagn氏とは今年のJpGUで知り合い，中国での石油資源開発に関わる研究を熱心にされています。
流体研 地下セミナー/特別講演会のお知らせ
2019/7/29 Mon 16:30-17:30 @流体科学研究所 2号館大講義室（東）
Migration of micro-earthquakes during cyclic operation of Underground Gas Storage and the Changdao earthquake swarm
Dr. Baoshan Wang (School of Earth and Space Sciences, University of Science and Technology of China)
Abstract: The distribution of earthquakes is controlled by the stress state and material properties. And the migration of earthquakes can be used to infer the changes in subsurface stress or medium properties. In this presentation, we will introduce two case studies of seismicity migrations related respectively to the Hutubi Underground Gas Storage (UGS) in Junggar Basin and the Changdao earthquake swarm occurred in the Bohai Sea. We first use the matched and filter technique to detect more events than the local catalog. And then we relocate the detected events using double difference method with waveform cross-correlation-based differential travel-times. Micro-earthquakes clearly migrate outward from the UGS during the cyclic operation, the migration may result from the stress transfer during multiple injection and extraction. The seismicity during Changdao earthquake swarm unilaterally migrated south-west accompanied by some bursts along several conjugate faults. We suggest that fluid diffusions are responsible for the earthquake migration in Changdao.
第5回東北大学若手研究者アンサンブルワークショップにおいて，優秀ポスター賞を受賞（2019年６月７日）しました。本賞は，2019年6月7日に行われた第5回東北大学若手研究者アンサンブルワークショップにおいて，多数の研究者の興味を引きつける発表を対象とし，参加者の投票により決定されるものです。
受賞題目：地下の逆問題解決に対するチート的アプローチ（椋平 祐輔）
Our paper (Mukuhira et al., 2017 JGR) is honored as paper award from Japanese society for rock mechanics (JSRM).
Thank you for your support on our research activity. Also we sincerly appreciate Prof. Ishida (ex Kyoto Univ.) for recommendation.
Our collaborative research proposals have been accepted by ifs, Tohoku Univ.
Thanks for warm support! We will be in pursuit of collaborative project.
We had several oral and poster presentations including invited talk at JpGU meeting 2019.
Sun. May 26, 2019 1:45 PM – 2:00 PM
[SSS05-01] Causality between induced seismicity b-value reduction and stress state of existing fractures
★Invited Papers
*Yusuke Mukuhira1, Michael C Fehler2, Takatoshi Ito1, Hiroshi Asanuma3, Markus O Häring4
Sun. May 26, 2019 3:30 PM – 5:00 PM
[SSS04-P01] Constraint of focal mechanisms of induced seismicity by using misfit angles based on known in-situ stress
*Yusuke Mukuhira1, Makoto Naoi2, Michael C Fehler3, Hirokazu Moriya5, Takatoshi Ito1, Hiroshi Asanuma4, Markus O Häring6
Sun. May 26, 2019 10:45 AM – 12:15 PM
[SSS05-P04] A Novel Method to Estimate Fracture Permeability: Combining microseismic observational data and reservoir engineering model
*Meihua Yang1,2, Yusuke Mukuhira2, Takatoshi Ito2
Mon. May 27, 2019 3:30 PM – 5:00 PM
[MIS02-P07] ICDP DSeis 4: Drilling, core logging, and in-hole geophysical logging of ICDP DSeis drilling into the M5.5 aftershock zones in a South African gold mines.
*Shunsuke YOSHIDA1, Tadokoro Ryogo1, Kosuke Sugimura1, Kanematsu Makoto1, Mitsuya Higashi1, Benni Liebenberg2, Esterhuizen van Heerden2, Stephen Tau3, Siyanda Mngadi3, Ray Durrheim3, Martin Ziegler4, Yusuke Mukuhira5, Ronald Conze6, Yasuo Yabe7, Shunya Kaneki8, Yuki Yokoyama9, Nomqhele Nkosi10, Dave Roberts10, Sifiso Buccio11, Hiroshi Ogasawara1
Yusuke MUKUHIRA personal homepage 