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Keywords: shale
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-145
... Abstract This paper presents the results of an investigation of weathering characteristics of heterogeneous mudstone and shale sediments encountered during corridor X motorway construction, crossing Republic of Serbia. Red Permian braided river deposits are prone to weathering after exposure...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-094
... Abstract Shale, a fine-grained sedimentary rock, is composed of highly compacted clay particles, nanometric porosity and silt-sized particles of other minerals. In this paper, a combined use of X-Ray micro-CT and nanoindentation tests is proposed for the qualitative and quantitative...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-158
..., roof lithology and the cutting direction of the continuous miner. Laboratory strength testing on shale in the immediate roof was done and the test results were used as input parameters into the Examine2D modelling. The numerical modelling results were analysed in an attempt to correlate the modelling...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-091
... Abstract For a better understanding of the directional strength behaviour of siltstone and shale rocks point load tests were carried out applying different load angles. For this purpose, the specimen had to undergo a special preparation procedure. Although, standard application recommendations...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-112
... Abstract Matrix permeability, a key factor controlling gas production in shale gas reservoir, is difficult to measure at laboratory and affected by the geochemistry and geology settings including the Total Organic Carbon (TOC) contents, mineral compositions, pore structure, and deposit...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-233
... Abstract Developing resource shale and/or tight plays can be extensive and demanding, particularly when determining an optimal multi-stage fracture stimulation design. A common approach has been to duplicate the so-called Barnett design, such as using a slick water fracturing fluid with a low...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-219
... Characterization cross plot strength Upstream Oil & Gas grain size shale mechanical rock property Prasad reservoir geomechanics khaksar rock characterization sandstone rock type log data Mohr friction angle mineralogy limestone rock property porosity DTC friction angle Rock Engineering...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-222
... Abstract Quantifying shale strength anisotropy associated with the presence of relatively weak sedimentary laminations is particularly important for extended reach drilling as interaction between borehole stresses and anisotropic formation strength can ultimately lead to catastrophic wellbore...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-047
... logging reservoir geomechanics Reservoir Characterization Upstream Oil & Gas field mapping shale abu hamour Midra Wellbore Design Buff Qatar shaft limestone tunnel classification correlation discontinuity excavation rock mass classification attempt Artificial Intelligence strength...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-091
.... knowledge management Upstream Oil & Gas RME metals & mining TBM shale asturia Reservoir Characterization methane tunnel face emiliano formation oviedo Pajare tunnel emission excavation tunnel Excavability structural geology injection correlation instability Bieniawski north...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-053
... failure, local shearing failure, buckling failure, as well as tensile splitting, shearing, and sliding failure, as described by Aydan et al. (1993, 1996) and Wang (2003), based on the cases in Japan and Taiwan. Squeezing rock is frequently encountered in schists, argillaceous schists, shales, claystones...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-119
... porous mass concrete investigation mass concrete rockfill dam flow in porous media Upstream Oil & Gas reinforcement steel bar intersection shale injection fracture transmissivity micropile eurock 2012 grout permeability Rock versus porous mass concrete, drilling, scanning, water...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-138
... age, sedimentary sequence underlying the Bruce nuclear site in the Municipality of Kincardine, Ontario, Canada. Lateral development of the DGR would occur in the Cobourg Formation, an argilla-ceous limestone that is overlain by 200 m of Ordovician shale. As part of investi-gations conducted to assess...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-169
... ABSTRACT: Wellbore stability in shale is a continuing problem, which results in substantial annual expenditure for the petroleum industry. A main reason for wellbore instability in shale is the flow of water and ions from the mud into the shale formations and consequently it reduces the shale...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-179
... ABSTRACT: Damage induced by desiccation (i.e. drying shrinkage and cracking) is an issue to be investigated in deep geological nuclear waste storage engineering. A dried and cracked zone can form in the underground gallery host shale due to ventilation effects. Increase of the permeability and...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-001
... stresses, as it is the case in-situ. Particularly for shale very high values for cohesion and friction were found. Reliable input parameters for numerical modeling rock bolt behavior by FLAC have been determined and were successfully applied. INTRODUCTION Support of underground excavations in rock is...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-014
... ABSTRACT This paper presents a linear cherno-poroelastic model for analyzing borehole stability in transversely isotropic shales. The theory couples mechanical, hydraulic and chemical processes in fluid-saturated porous media. In particular, the model couples stresses and pore pressure to...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-086
... area from top to bottom is as follows: – Soil – Fine grained sandstone – Intercalated shale and sandstone – Intercalated shale, mudstone, grey to black carbonaceous shale with coal bands – Coal (‘60-ft’ seam) – Clay (floor) The immediate roof and floor of the ‘60-ft’ seam...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-067
... ABSTRACT The article presents a comparison of static and dynamic elasticity constants of sandstones and Shales based on an uniaxial compression test. The results of the test indicated that the static elasticity constants are generally more sensitive to changes in stress than their dynamic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-015
... shale forming the valley. This resulted in a landslide breaking the overlying teschenite sill into separate blocks. This process was simulated using Perzyna's theory of viscoplasticity. The model is a part of an extensive modeling program aiming at stability analysis of the Zermanice Concrete Dam...

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