... porosity and true porosity can be established from equation (1) and (2) as: (3) ϕ * = ϕ ( 1 − ε v ) where ε v is the volumetric strain. The sign convention adopted in this paper is positive for compressive stress and compressive strain. This method, first proposed in Ref...

... equations of the model are derived within the framework of a continuum chemoporoelastic theory that linearly relates total stresses and variation of fluid content to the strains, pore pressure, and solute mass fraction through anisotropic material coefficients. The field equations are solved analytically...

... needed in rock cutting and drilling. estimation rectangular cutter cutter equation cutter holder specific energy reservoir geomechanics application bit selection geometry spe isrm 78242 wear flat length dagrain faculté polytechnique wellbore design optimal depth penetration soigny...

... previously developed. critical drawdown pressure drawdown pressure strength criterion strength spe isrm 78234 plastic strain equation cavity sand production prediction reservoir geomechanics reservoir characterization sandstone upstream oil & gas boundary in-situ stress plastic zone...

... on a synhetic, though realistic, set of data and, despite the simplfying assumptions (single phase flow, constant fluid viscosity) could qualitatively reproduce the salient features of the behaviour of typical heavy oil wells. porosity equation bitumen sand production reproduce permeability...

... curvature retrieval bubble point pressure core retrieval drilling operation inner tube compressibility upstream oil & gas diameter equation coring-induced damage permeability wellbore reservoir characterization core damage spe isrm 78156 free space mpa drilling fluids and materials...

... viscosity, and producing time. The simulation results relating cumulative sand production and sand production rate to these important variables are presented. Descriptions of the volumetric sand production model (formulations, constitutive equations, solutions procedures) are also presented. The study...

... are parametrically studied allowing for a better understanding of the physical characteristics governing borehole problems. wellbore design minimum stress direction reservoir characterization radial distance mpa dual-porosity approach stress direction matrix lt 2 equation spe isrm 78240 radial...

... Abstract This paper presents a forward model for subsidence prediction and an inversion model to calculate the reservoir behaviour from subsidence data. The forward model employs combinations of analytic solutions to the elasticity equations, which approximate the boundary conditions...

...-section with normal n within a representative material volume element. The thermodynamic basis, free energy function, damage evolution equation, and damage-induced inelastic compliance are derived. It is shown that damage causes strain-softening and positive dilatancy, as well as decrease...

... probabilistic analysis monte carlo method safety factor sensitivity analysis mean value spe isrm 78179 model output probability equation wellbore stability reservoir geomechanics analysis reservoir characterization wellbore design failure probability variation hydraulic fracturing society...