... Reservoir Characterization orientation assessment stress concentration Diederich Energy Storage reservoir geomechanics mechanism asian rock mechanics symposium 29 rockburst tunnel Pre-construction Prediction of Strain-burst Potential in Blind Tunnelling M. S. Diederichsa and I. Vazaiosb a Queen...

... Abstract In situ stress in a rock mass in Singapore is considered to be controlled by the forces related to the subduction of the Indo-Australian plate under the Sunda plate, as NE-SW to NNE-SSW oriented thrust faulting regime has been reported in the area. However, there are some cases...

... Upstream Oil & Gas november 2018 asian rock mechanics symposium 29 rock mass block shape rock mass stiffness analytical solution stiffness Reservoir Characterization strength discontinuity determination orientation isrm international symposium loading Hoek Abstract...

.... In this paper, digital image processing is applied to detect edges in the images of two selected tunnel faces, clusters the signals and a structure map is generated which can be used for determining joint orientations, spacings and trace lengths. The applied method resulted in both cases in a very good...

... reservoir geomechanics constraint asian rock mechanics symposium 29 chinese mainland structural geology Simulation gravity stress field Reservoir Characterization Upstream Oil & Gas isrm international symposium finite element model stress orientation fault system Artificial...

... Upstream Oil & Gas criterion isrm international symposium asian rock mechanics symposium 29 friction angle orientation failure condition cohesion failure plane Reservoir Characterization strength variation critical plane approach distribution function stress condition...

... Abstract 3D numerical modelling studies were carried out to study the behaviour of large twin caverns belonging to a hydroelectric project in Himalayan region. Various stages of extraction of the caverns were characterised by instrumentation studies. The cavern is oriented along the major...

... suhua highway isrm international symposium orientation case slope Upstream Oil & Gas slope surface highway asian rock mechanics symposium 29 discontinuity Artificial Intelligence digital surface model portal coastal highway northern portal continual collapse tunnel Investigating...

... reservoir geomechanics population principal mean stress stress tensor Wellbore Design Mean stress confidence interval Reservoir Characterization orientation Rock mechanics customary method asian rock mechanics symposium 29 rock engineering confidence region Upstream Oil & Gas...

... conditions including magnitude and orientation of in-situ stress, boundary conditions, and rock mass properties. The fault was modeled as having a dip angle of 40° and apparent thickness of 5 m (equivalent to the height of the excavated rock wall). The shaft sinking procedure was simulated using three...

...) projects. The first part of this paper deals with the overall characteristics of the rock stress in shallow crustal region in Korea based on the in-situ stress measurement data obtained by hydraulic fracturing stress measurement for the last 14 years. The horizontal stress orientations were determined...

... locations are in reverse faulting stress regimes, in which vertical stress (S v ) is the least principal stress. The magnitudes of S Hmax are generally within the stress range limited by frictional coefficients of 0.6 and 1.0 of faults optimally oriented for slip. However, S Hmax magnitudes do...

... orientation on damage distribution around the blasthole have been determined. reservoir simulation damage distribution Dascalu hydraulic fracturing orientation energy release rate Sapporo Upstream Oil & Gas asian rock mechanics symposium arms8 borehole charge microstructual size micro...

... of microstructures and their alignment to a prevalent orientation could be one of the plausible causes of the 2σ effect. In order to incorporate the strength anisotropy into a failure condition, the Mohr-Coulomb criterion is extended to the anisotropic version by defining the internal friction angle and the cohesion...

... as dilation perpendicular to the foliation. The longitudinal displacement development also depends on the orientation of the tunnel axis in relation to the foliation. It was observed that for perpendicularly striking foliation to the axis, with steeply dipping angle, the displacements mainly occur close...

... rock block are essential for the design of underground excavations in jointed rocks. Traditionally stability analysis involves a tetrahedral block formed by an excavation free face and the mean orientation of three rock joints and this is termed as the deterministic analysis. However, the orientation...

... of their orientation, size, spacing, density, shape and spatial distribution. Based on the parameters measured on the outcrop, a detailed statistical analysis is conducted, followed by the geometric model generated using Monte-Carlo simulation. Mechanical and hydraulical research is then carried out based...

... measurement campaigns were carried out in five deep boreholes, with the maximum measurement depth of 700m. The measurement results indicate that the orientation of the maximum horizontal principal stress is NEE to SWW, and the relationship between the three principal stresses are S H S V S h . According...

... constant head into the center hole. The fracture permeability is determined for various fracture orientations with respect to the vertical loading direction with 15° apart. The flow tests arerepeated 3 times under each vertical load to assess the permanent closure of the fracture under loading...

... acquisition system experiment reservoir geomechanics orientation borehole proceedings Rock stress laboratory experiment Magnitude unconsolidated rock formation packer stress measurement azimuth hydraulic fracturing unconsolidated formation test tool MPa hf test drill string Challenges...