... 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...

... 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...

..., 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...

... 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...

... 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...

... 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...

... for the properties val- ues as an essential step in building a representative description of the rock. The same QA/QC protocol can be implemented for other rock types such as lime- stone, dolomite, chalk, shale or coal but left for future investigations. 2 ROCK CHARACTERIZATION The eight physical, mechanical...

...Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 Numerical modeling of composite bilaminate materials as an analog for strength variation in anisotropic shale formations B.R...

... Cretaceous sedimentation is basically a sequence of shallow marine limestone with occasional shale and evaporates in a shallow basin. Structurally, Qatar appears to be an anticline or dome with N-S axis from Al Majidah to Shahaniyah. Topographically, it is a low relief landscape with a maximum elevation...

... 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 portal Rock...

... support is to install rock bolts at about 30 degrees to the joints at the crown. The tunnel will be more stable under higher lateral earth pressure. Theme: Rock Support. Keywords: tunnel, interlayered shale and sandstone formation, numerical simulation, UDEC, support. Eurock 2012 Page 2 1 INTRODUCTION...

... with a thickness up to about 8 m in the valley floor. The earthfill dam is located in the southern region of Harz with mainly argilla- ceous shales, greywackes and granite intrusions. For both sites comprehensive ground investigation programs were carried out in two stages including vertical and inclined core...

... 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...

... 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...

...Rock Mechanics in Civil and Environmental Engineering Zhao, Labiouse, Dudt & Mathier (eds) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-58654-2 Modelling of drying and cracking initiation in a gallery excavated in shale H. Peron, J. Eichenberger, L. Laloui & S. Salager Ecole...

... Reservoir Characterization metals & mining resin cohesion grouted bolt strength shale lab test elastic parameter shear strength deformation Upstream Oil & Gas normal stress MPa shear stress numerical modeling structural geology displacement shear stiffness excavation...

... reservoir geomechanics Wellbore Design concentration transversely isotropic shale Reservoir Characterization flow in porous media pore pressure borehole Artificial Intelligence Fluid Dynamics variation coefficient field equation equation isotropic porous media diffusion Drilling...

... Reservoir Characterization geotechnical mapping tirap colliery plane structural geology Upstream Oil & Gas strength property stability analysis colliery slope stability analysis shale metals & mining rock mass slope mass slope angle orientation geotechnical study...

... structural geology Reservoir Characterization static equivalent Upstream Oil & Gas specimen GPa stress corresponding erl differential static young Poisson static elasticity constant maximum value shale dynamic elasticity constant conclusion dependence metals & mining...

... Upstream Oil & Gas shale threshold structural geology calibration viscoplastic flow FEM model increment Reservoir Characterization stability analysis teschenite sill rheological parameter reservoir geomechanics regional model foundation geological condition geological time...