...%) at a confining/axial pressure of 30 MPa, pore pressure of 15 MPa, CO2 saturation of 50% or 77% and 60oC for several weeks. Bulk modulus, Young s modulus and Poisson s ratio were measured intermittently. Before and after the experiment, porosity and permeability were also measured on each sample, and initial...

... of at least one of the values of Poisson's ratio. Introduction Rocks are complex composites of different minerals. As a consequence their mechanical properties are highly variable. This variability extends through varying elastic to post elastic behaviour. For a general elastic solid there are six stresses...

... viscoelastic solution is acquired by replacing the traditional Maxwell model with the fractional Maxwell model. Finally, a viscoelastic solution of the depth of proppant embedment is obtained which involves seven parameters, elastic modulus and Poisson's ratio of proppant, and elastic modulus and Poisson's...

... are determined by B-test, in which volumetric strain and pore pressure changes with confining pressure. Drained bulk modulus and poroelastic parameter H are determined by P-test and H-test, in which volumetric strain changes with confining pressure and pore pressure, respectively. Young's modulus and Poisson's...

... the Poisson's ratio of the rocks tested. Reservoir Characterization Vasarhelyi water content mechanical property Upstream Oil & Gas asian rock mechanics symposium arms8 specimen reservoir geomechanics pore pressure Fuenkajorn october 2014 strength Loading Rate dry specimen compressive...

... and their stiffnesses of the springs are calculated for a pair of fixed values of the Young s modulus and the Poisson s ratio. The very simple cubic structure of particles is introduced and three different types of spring setup to connect particles are assumed to model a linear elastic medium. The relationship between...

... insertion locations were simulated for various Poisson?s ratios. In the horizontal and tilted directions, the rock slope formed is always extended by the progress of excavation. It is found that the magnitude of displacement tends to decrease with the increasing distance from the excavated region...

... technique october 2014 coordinate system Sakaguchi Upstream Oil & Gas asian rock mechanics symposium arms8 Poisson anisotropic rock mass Reservoir Characterization nakajima anisotropy evaluation strain component equation 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014...

... properties of rock. The mechanical properties investigated other than fracture toughness are uniaxial compressive strength, Young's modulus, Poisson's ratio and P-wave velocity. The experimental results indicate that Kimachi sandstone shows anisotropic properties of Young's modulus, tensile strength...

... is to develop a general correlation between the unconfined (uniaxial) compressive strength and the apparent cohesion of rocks. Using this correlation, several important mechanical parameters can be estimated including, apparent cohesion, angle of internal friction, and Poisson's ratio. 3. THEORETICAL BACKGROUND...

..., and Young's modulus and Poisson's ratio of each cycle until failure were estimated. A series of cross-sectional thin sections of the prefailure specimens were observed. As a result, the characteristic changes in two elastic properties following the progress of the deterioration stage were revealed...

... of elasticity and Poisson's ratio of sandstones is also studied. The equations between modulus of elasticity and confining pressures and Poisson's ratio and confining pressures are also proposed. The proposed equations are very promising and can be used for field problems. INTRODUCTION Many hydroelectric...

...ISRM International Symposium 2008 5th Asian Rock Mechanics Symposium (ARMS5), 24-26 November 2008 Tehran, Iran 533 ESTIMATING THE POISSON S RATE VALUE OF THE ROCK MASSES B. VÁSÁRHELYI Dept. Engng. Geol. Technical University of Budapest (Hungary) (e-mail: vasarhelyib@gmail.com) Abstract Knowing...

... Wellbore Design panel height boundary element method Poisson surface excavation geo-mechanical aspect tonear surface excavation ISRM International Symposium 2008 5th Asian Rock Mechanics Symposium (ARMS5), 24-26 November 2008 Tehran, Iran 713 GEO-MECHANICAL ASPECTS OF THE SUBSIDENCE PHENOMENON DUE...

...-parameters are obtained by simulating uniaxial, triaxial and Brazilian tests. All compression test samples measure 35 mm×70 mm and consist of about 700 to 2400 particles. The Young s modulus and the Poisson s ratio are calculated at 50% of peak strength. The Brazilian specimen has 70 mm diameter The particle...

... is elastic modulus (Young s Modulus) and is Poisson s ratio. Considering Eq. (4), Eq. (3) can be rewrite as follow: )21( )21(1 s s E E (5) The value of E and can be determined easily in the laboratory by conventional uniaxial compressive strength (UCS) test; hence, by determining the Es and s...

... to represent the overall equivalent (or effective) properties of fractured rocks at field scales is to use the concept of the Representative Elementary Volume (REV), beyond which the concerned properties of the rock mass, such as Young s modulus, Poisson s ratio or strength, become constant in principle. Using...

.... The static and dynamic Poisson's ratios show some extent of positive dependence but the correlation is more dIscrete. There is also a difference of static/dynamic Bior 5 coefficients. The static one is higher than the dynamic one. They are all T~creasc with confining pressure. The inherent cause of static...

...Dynamic and static moduli of limestone rock from Saudi Arabia NA AL-SHAYEA' & K. KHAN2 1. Civil Engineering Department, KFUPM, Dhahran, Saudi Arabia 2. Petroleum & Gas Technology Division, RI, KFUPM, Dhahran, Saudi Arabia ABSTRACT: Elastic properties of rocks (clastic modulus and Poisson's ratio...

... different strain rates studied. It is also observed that the results of measured Young's moduli and Poisson's ratio arc scatter and have no clear tendency changing with increasing strain rates and confining preSSurcs. I. INTRODUCTION Dynamic mechanical properties of rock materials arc basic Information...