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1-14 of 14
Keywords: determination
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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
... barely touch each other provides a unique way to determine the minimum principal stress magnitude. This hydraulic testing method has been adapted to measuring the pressure required to reopen mechanically a preexisting fracture of known orientation (HTPF method). Today, for crystalline rock formations...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-012
... issn Canadian Shield principal stress reservoir geomechanics dight Deformation Rate analysis determination numerical model international symposium 7th International Symposium on ln-51tu Rock stress May 10-12,2016, Tampera, Finland Johansson & Raasakka (ads) ISBN 978-951-758-806-1 ISSN 0356...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-026
... Rock mechanics experiment determination shut-in pressure fractured rock mass Abstract Despite the extensive theoretical work on the subject of hydraulic fracturing for stress measurements, the amount of experimental work has thus far been limited, especially in the case of its validity...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-037
... and Technology (AIST), Japan related to earthquake prediction, an attempt to determine three-dimensional stress tensor was carried out. We successfully applied the corebased method called anelastic strain recovery (ASR) method for two core samples retrieved from a depth of approximate 470 m in the Niihama...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-047
... in-situ experiment analysis data, Kaiser effect was found to express itself in various modes in quasi-plastic and brittle rocks. Thus, when a stress level determined by overlying rock weight is reached in salt rocks, AE activity increases drastically, followed by a smooth increase in intensity as borehole...
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
... ABSTRACT: To determine three-dimensional stress orientation, we carried anelastic strain recovery (ASR) measurements out using drill core samples taken from a scientific ocean deep drilling project. The lithology of the core samples is mudstone or siltstone with larger porosities ranged from...
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-2010-010
... ABSTRACT: Hydraulic Fracturing, Hydraulic Tests on Pre-existing Fractures, sleeve reopening tests and the analysis of en echelon fractures developed in wells inclined to the principal stress directions, have helped determine the vertical profile of the complete stress tensor in a sedimentary...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-084
... of underground structures, it is important to incorporate information on the in situ stress field not only for design purposes, but also for the safe con- struction and operation of the underground structure. Generally, the scale of the structure will determine the stress measurement needs for quantitative under...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-011
... from the most recent hydraulic stress measurements at the Olkiluoto site, Finland (Fig. 1), are presented. Upstream Oil & Gas strength MPa hydraulic fracturing orientation borehole Reservoir Characterization tensile failure criterion borehole wall shear stress determination...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-071
... is established. By calculating the annular pressure loss of drilling fluid in the laminar flow, the method for determining the proper drilling fluid density is proposed combined with the pore pressure of coal reservoir and drilling negative pressure difference. Comparing the measured values with the theoretical...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-023
... ABSTRACT: In permeable rock the hydraulic fracturing stress measurement is carried out using such impenetrable shell as a packer and a sleeve that prevents from fluid injection into the fracture and rock. The stress states are determined from several fracture reopening pressures on condition...
Proceedings Papers
Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-003
... from direct and indirect stress measurements are combined in an Integrated Stress Determination (ISD) with or without support from numerical stress modeling. The combination of available information will generate the Final Rock Stress Model at a site or an area. Examples include the European stress map...