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Title: AEとX線CTを用いた間隙水圧上昇によるBerea砂岩の破壊の観測
Other Titles: AE Monitoring and X-ray CT Observation for Failure of Berea Sandstone with Pore Pressure Increase
Authors: 石田, 毅  kyouindb  KAKEN_id
深堀, 大介  KAKEN_name
石田, 基  KAKEN_name
佐藤, 亮介  KAKEN_name
村田, 澄彦  kyouindb  KAKEN_id  orcid (unconfirmed)
小野塚, 重信  KAKEN_name
大瀬戸, 一仁  KAKEN_name
山本, 晃司  KAKEN_name
Author's alias: ISHIDA, Tsuyoshi
SATO, Ryosuke
MURATA, Sumihiko
ONOZUKA, Shigenobu
OSETO, Kazuhito
Keywords: AE
Acoustic Emission
X-ray CT
Pore Pressure
Tri-Axial Test
Rock Mechanics
Issue Date: Feb-2010
Publisher: 社団法人 資源・素材学会
Journal title: Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan
Volume: 126
Issue: 3
Start page: 58
End page: 63
Abstract: AE (acoustic emission) events have been monitored with water injection in enhanced oil recovery and in a fractured reservoir of oil and gas fields to detect reservoir behavior with pore pressure increase. Since the AE events are induced by various causes, it is important how to obtain useful information from the monitored AE events. Thus, in this research, we monitored AE events in a tri-axial experiment of Berea sandstone under control of pore pressure, to simulate AE monitoring in oil and gas fields. The results have demonstrated the followings. (1) The failure that is induced by pore pressure increase and accompanies the AE events could be explained and predicted by Mohr-Coulomb's failure criterion and Terzaghi's effective stress theory. (2) Places where failures are induced could be clarified by source location of the monitored AE events. (3) Fault plane solutions of the AE events are consistent with the directions of the induced macroscopic fracture plane and the stress condition applied in the experiment. It could be concluded that AE is useful to monitor reservoir behavior with pore pressure increase, although further investigations from various aspects are needed.
Rights: © 2010 The Mining and Materials Processing Institute of Japan
DOI(Published Version): 10.2473/journalofmmij.126.58
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