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Keywords: borehole
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Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-006
... for designing deep underground structures, such as caverns or tunnels. Depending on the domain of application, the most commonly used stress determination methods involve stress relief techniques, hydraulic tests in boreholes, analysis of borehole breakouts and drilling induced fractures, or inversion...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-002
... masses where stresses are not a linear function of spatial coordinates. Yet when the HF method is applied in a borehole inclined to all principal stress directions it yields en-echelon fractures the geometry of which provides an efficient constraint for the maximum principal stress magnitude. Hence...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-036
... difference in the estimates of the elasticity modulus depending on the chosen method of research that results in incorrect calculations of the rock massif deformation characteristics. This work is aimed at improving the reliability of the borehole measurements of elastic modulus in the rocks through...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-026
... hydraulic fracturing normal stress hydroelectric project rock mass Upstream Oil & Gas Finland Johansson proceedings fracture stress measurement principal stress Reservoir Characterization flow rate borehole Symposium Injection Rate critical pressure reservoir geomechanics...
Proceedings Papers
Toshinori Nayuki, Tatsuya Tanaka, Kenichi Ando, Koji Oka, Naoki Nishizaka, Yuichiro Shimoguchi, Hiroshi Ogawa, Kazu Saito, Kiyotoshi Sakaguchi, Masaharu ltamoto
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-056
... can vary widely. Validation and engineering judgement with respect to the measured results is therefore necessary. This study focusses on the Compact Conical-ended Borehole Overcoring (CCBO) technique (Sakaguchi at al., 1994, 1995 and 1999), which is a stress relief method. With the CCBO technique...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-027
... Upstream Oil & Gas inverse problem borehole Reservoir Characterization Corthesy anisotropic rock stress tensor deformability parameter Raasakka doorstopper technique Symposium strain recovery curve Rock stress international symposium reservoir geomechanics stress component...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-047
... Abstract The results of stress measuring in quasi-plastic salt rocks and brittle sandstones are presented in article. Stresses were monitored in interchamber pillars using Goodman's hydraulic borehole jack. Acoustic-emission (AE) intensity was recorded as borehole walls were loaded. From...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-022
... Reservoir Characterization Raasakka Rock stress elevation tunnel Upstream Oil & Gas borehole excavation steel liner length powerhouse excavation reservoir geomechanics Finland Johansson Symposium stress reduction international symposium groupe qualita inc borehole tf-376-14...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-028
... Reservoir Characterization axial gauge axial strain Upstream Oil & Gas variability instrument reservoir geomechanics variation axial compensation gauge situ stress Symposium orientation borehole axial strain compensation compensation Drilling strain change stress relief...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-053
... reservoir geomechanics observation equation Finland Johansson Reservoir Characterization Upstream Oil & Gas Raasakka water management Yokoyama Rock stress in-situ rock stress shut-in pressure ps borehole high stiffness mechanism principal stress hydraulic fracturing compliance...
Proceedings Papers
Takatoshi Ito, Toshiyuki Nayuki, Kazumasa Kato, Akio Funato, Takashi Satoh, Yuichi Kitagawa, Harumi Kato
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-034
... Reservoir Characterization orientation diameter baby hole reservoir geomechanics drill pipe downhole tool core sample Upstream Oil & Gas borehole stress measurement in-situ stress hydraulic fracturing test interval Symposium packer deep depth SHmax deep rock stress tester...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-035
... around the borehole allows orientation of the other two principal stresses to be inferred from the in situ pressure test prior to overcoring. When the ratio of these other two stresses is known or can be estimated with reasonable confidence, the magnitude of the two stresses can also be inferred from...
Proceedings Papers
Junwei Junwei Huang, J. William Flynn, Jon Haycox, Juan Reyes-Montes, Sanna Mustonen, R. Paul Young, Shawn Maxwell
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-040
... in the EDZ and provides better evaluation of the long-term safety and integrity of the rock mass around engineered openings in the nuclear disposal facility. Raasakka experiment Onkalo Ray Coverage plane excavation damage zone tomography p-wave velocity Upstream Oil & Gas borehole sensor...
Proceedings Papers
Weiren Lin, Timothy B. Byrne, Akito Tsutsumi, Yuhji Yamamoto, Arito Sakaguchi, Yuzuru Yamamoto, Chandong Chang
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-029
... measurements were consistent with those from drilling induced borehole breakouts and tensile fractures observed in electrical image of borehole logging. 1 INSTRUCTIONS Following Ocean Drilling Program (ODP), the Integrated Ocean Drilling Program (IODP) begun from 2003. Deep drillings related...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-009
... ABSTRACT: Over the past fifteen years, my colleagues and I have developed a suite of techniques for determination of the full stress tensor in arbitrarily-oriented wells and boreholes utilizing observations of non-catastrophic failures of the wellbore wall - compressive failures, drilling...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-014
... ABSTRACT: The Downward Compact Conical-ended Borehole Overcoring (DCCBO) technique is one of the overcoring methods. In this study, a measurement theory for application of the DCCBO technique to orthotropic rock is proposed. Numerical experiments with the use of a 3D-FEM analysis were...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-010
... that exists before applying the perturbation of concern, must be evaluated and interpretation of borehole hydraulic tests has revealed very efficient for such evaluations. But overtime, the practice has progressively evolved from simple Hydraulic Fracturing tests (Hubbert and Willis, 1957, Kehle, 1964...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-065
... geomechanics borehole compressive strength maximum horizontal horizontal principal stress real time system strength sandstone real-time monitoring tunnel maximum horizontal principal stress in-situ stress measurement rock burst burst-prone tendency principal stress Magnitude Rock Stress...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-036
...Rock Stress and Earthquakes Xie (ed.) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-60165-8 The influence of rock anisotropy on the stress-induced velocity anisotropy around a borehole Jiayong Tian & Huaqing Wang Institute of Crustal Dynamics, China Earthquake Administration, Beijing...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-075
... requirement of highway construction, in early May before the occurrence of great Wenchuan Ms8.0 earth- quake, we carried out in-situ hydro-fracture stress measurements in 4 deep boreholes in Qingchuan and its vicinity, which were located in the meizoseismal area; and after the May 12 great earthquake we did...
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