..., or where additional information about rock properties is desired. geologist reservoir geomechanics regression geology machine learning upstream oil & gas reservoir characterization cai artificial intelligence geological subdiscipline expression application knn regression...

... expression of g ( x ) when h ( y ) complies with uniform, exponential, gamma or power law. Many researchers got significant achievements in estimating fracture diameter by using Washburton's equation (Zhu et al., 2014; Zhang et al., 2023). However, some difficulties still exist in the use of the above...

... intelligence quantification variability geological subdiscipline international journal rock mechanic geologist asia government reservoir geomechanics journal kanpur relation engineering geology expression doctoral dissertation science deformation uniaxial compressive strength p-box...

... is invalid, the rock failure occurs in an abrupt and blast-wise form (so-called rockburst). stiffness israel government acoustic emission geology reservoir geomechanics assessment geologist united states government reservoir characterization expression upstream oil & gas asia government...

... conditions. reservoir characterization fracture prediction expression hydraulic fracturing tensile strength tcd variation reservoir geomechanics notch radius u-shaped notch specimen fracture toughness moleano limestone macael marble application crack-type defect Rock Mechanics...

... for researching water inrush mechanism in geotechnical engineering. structural geology compression equation probability flow in porous media characteristic geotechnical engineering expression permeability rock mechanic upstream oil & gas seepage instability experiment porosity tpe fluid...

... complex reservoir in-situ experiment injection reservoir characterization carbonate reservoir hydraulic fracturing fracture expression seismicity upstream oil & gas equation hydraulic aperture discontinuity international journal rutqvist reservoir geomechanics displacement...

... conditions (classic and extra) are taken in order to solve the corresponding boundary value problem, and the analytical expressions of stresses, strains and displacements in the elastic and plastic regions are presented. The solution for the elastoplastic boundary is achieved numerically and the observed...

... geomechanics radial displacement characteristic lining expression convergence-confinement method Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Visco-elastic-plastic solutions for tunneling...

... material, and hence also, of the rockmass being modelled. strength tensile strength upstream oil & gas expression nomogram structural geology variability marino reservoir characterization rocktype figure 6 rock mechanic interlock kurtosis richard equation figure 2 porosity...

... vector dipole equation inversely proportional expression pengcheng wei oscillator hertz oscillator cheng wang Abstract To investigate the influence of rock property on the electromagnetic radiation mechanism of rock fracture is one of the important research fields of solid mechanics...

... plane. Irreversible block sliding is assumed to develop in response to climatic thermal fluctuations and consequent contraction and expansion of the sliding block material. While an analytical expression for this model is already available, we are exploring the possibility of obtaining such a permanent...

... Drillstem Testing velocity friction angle Strength Characteristic peak shear strength Upstream Oil & Gas formula drillstem/well testing expression total friction angle rock joint shear strength friction angle 13th international congress coefficient shear deformation velocity...

..., the water inrush pat- tern of fractured rock mass is related to tensile-shear crack failure, which belongs to a I or II compound crack problem in fracture mechanics. In this case, the critical water pressure PL, when fractured rock mass are in tensile-shear failure, can be calculated by expression (1). KK...

... ABSTRACT There have been extensive efforts to develop empirical criteria by a number of rock mechanics researchers as the theoretical ones are not adequately capable to demonstrate the response of intact or jointed rock masses at a wide range of confining pressures. Amongst such expressions...

... Engenharia Civil (LNEC), Lisbon, Portugal ABSTRACT: In a previous paper (Grossmann 1988), the general expressions giving the intensity of a joint set as a function of the sum of the trace lengths of its joints on an observation surface, as well as the formulas for the usual types of observation surfaces were...

... ABSTRACT Santalò closed-form integral solution is used to derive a closed-form expression of the fracture size distribution for each of the most common trace length distributions, i.e. uniform, exponential, gamma, and power-law. Numerical integration is used for the lognormal distribution...

... of the viscoelastoplastic interface on the movement taking place inside the plastic zone. The viscoelastic properties of the isotropic media are represented here by the expressions φ 0( t ) and φ u ( t ). These are obtained from mechanical formulations of the models using viscoelastic isotropic strain and angular...

... and anisotropic nature of the rock mass. Expressions are suggested to assess the squeezing potential through a weakness coefficient called Joint Factor. Critical strain is also correlated with rock mass quality index Q.A classification is suggested to quantify the squeezing potential based on ratio of expected...

... Reservoir Characterization Simulation enhanced recovery experiment chalk mechanical behaviour injection coefficient expression water sensitivity Upstream Oil & Gas chalk reservoir reproduce Schroeder waterflooding compaction suction equation mechanics reservoir suction...