... of similar fault fracture zones. The results show that drilling wells parallel to the fault are more likely to lose stability than drilling wells through the fault. The larger the fault distance is, the larger the dip angle is, and the stronger the disturbance is. The bedding plane slip of quicksand port...

... of computing wellbore integrity displacement reservoir characterization conductor subsea wellhead condu ct disturbance deepwater drilling displacement characteristic simulation deformation equation installation numerical simulation mudline condu ctor conductor-soil displacement characteristic...

... excavation geological subdiscipline tunnel rockburst mathematics of computing reservoir characterization headrace tunnel mechanism disturbance induced mechanism excitation frequency circular frequency group equation numerical analysis sidewall induce rockburst diameter ARMA 24 0551...

... neural network classification hyperparameter vibration sandstone algorithm characteristic disturbance deep learning machine learning lithology classification neural network lithology classification method lithology gravel sandstone baraboshkin dataset information validation convolution...

... vertical depth reference trajectory propagation drilling operation simulation optimization performance box position deviation directional drilling controller cruise mode disturbance inclination lateral tangent section ARMA 21 1940 Optimal Position Control for RSS during Lateral/Tangent...

... ABSTRACT: A persistent increase in the permeability of a rock mass caused by transient stress disturbances, when they exist, can explain the change in groundwater level as well as the petroleum production by seismic waves in the far-field. However, it has yet to be clarified whether...

... carbonate reservoir concentration wavenumber disturbance linear stability analysis Upstream Oil & Gas Brine acid capacity number specimen wavelength acid injection rate porosity Injection Rate wormhole equation permeability ARMA 19 334 Experiments and modeling of acid dissolution...

... strainbursts both experimentally and numerically. In this article, a novel distinct-element bonded block method to evaluate the effect of loading system stiffness on strainbursts is described. With this method, strainbursts can be explicitly simulated without adopting an assumed dynamic disturbance from...

... Abstract: In Carlin Style gold deposits challenging ground conditions can be correlated to the alteration type and intensity as well as ground disturbance (i.e. faulting or collapse breccias). In these conditions, there are significant limitations in the application of conventional rock mass...

.... Repeated seismic soundings of the seam allow us to reveal such unstable sections by disturbances of wave travel times. The calculated relations and results of numerical experiments carried out with the use of transversally isotropic model for the fractured zones of coal seam are presented. The areas...

... ABSTRACT It is recognized that drilling in relatively high stress environments induces disturbance in the form of micro-cracks to the cored samples which in turn results in a reduced sample strength and modulus. The consequences are not only underestimation of these properties, but also...

.... Geological occurrence environment and mining condition of excavation disturbed zone was thoroughly analyzed, based on simulation experiment results of large-scale 3D and coupling of top coal-water-gas, top coal after weakening was regarded as non-continuous medium, Particle Flow Code program was used...

... strength, wall height and the Hoek's disturbance factor were the most sensitive parameters in estimating the design Mohr-Coulomb shear strengths. 1. INTRODUCTION The I-405 freeway in Southern California passing through the Santa Monica Mountains at Sepulveda Pass is one of the busiest and most...

... discrete blocks, or interlocking groups of particles, which travel through the cave, resulting in hang-ups and other disturbances to the gravity flow stream or displacement field. Three fundamental types of disturbed flow are presented in this paper namely: static, kinematic and mixed mode flow. Static...

... disturbance and " three high;” that is, high stress, high temperature and high pore water pressure. In addition, rock mechanics characteristics are very challenging and frequently cause increase of hazards, such as rock bursts, water invasion, and instability of goaf, all of which have high incidence rates...

... & mining reservoir geomechanics structural geology consolidation strength rockmass reinforcement technology drivage mechanic property maintenance period disturbance coefficient offracture roadway soft rock roadway ofroadway softrock roadway stepwise reinforcement technology fracture...

... oscillations, not by a horizontal shear disturbance. 1 INTRODUCTION Failure of underground structures due to an earthquake is rare. For example, on the occasion of the 1995 Hyogo-ken Nanbu (Kobe), Japan Earthquake, nearly 180,000 buildings on the surface were severely damaged or destroyed...

... stresses with depth. In order to reliably estimate the boundary conditions reproducing the current in situ state of stress, response measurements of the rock mass to current disturbances are necessary as input data. 1 INTRODUCTION Any rock mechanics study starts with the determination of the force...

...). Figure 1 View of Parliament Buildings showing partially completed new external excavations (Available in full paper) displacement building structure inspection reinforcement intervention close proximity Library disturbance geometry Centre Block requirement construction solution...

... issues, and damage is understood to consist of irreversible changes in mechanical properties because of microcrack formation, rupture of cohesive bonding, and disruption of fabric even to the point of total disturbance. 2 TECHNOLOGICAL BACKGROUNDMechanisms at the Coring Front It has been recognized...