... ABSTRACT: The behaviour of cohesive soils under triaxial test has attracted the attention of large number of investigators because of its practical importance. The behaviour of saturated clays during shear in particular has important practical implications. The study of the effect...

... increment ratio of unity incremental and constant rate of strain loading, and conventional drained triaxial tests. In the Ko cell the drainage path length of the back pressure saturated specimens may be up to 140 mm and on-specimen measurement of deformation is possible. An additional factor considered...

... undrained shear strength Fluid Dynamics Singapore Jurong Formation internal friction pressuremeter test plasticity index clay fraction permeability characteristic residual soil Reservoir Characterization classification resistance granitic residual soil shear strength triaxial test SHEAR...

... & J.-P.Herny Laboratoire de Mecanique de Lille, Departement de Mecanique des Materiaux Fragiles, Ecole Universitaire d' Ingenieurs de Li//e, Villeneuve d'Ascq, France ABSTRACT In this paper, experimental results for Fontainebleau sandstone are presented : skeleton behaviour through triaxial tests...

.... Reservoir Characterization drilling operation pore pressure wellbore integrity strength History specimen Wellbore Design triaxial loading shale Upstream Oil & Gas criterion critical state borehole instability stress level weald clay peak strength mechanical behaviour triaxial test...

.... For modeling the rock behaviour in a gasifier, there is firstly a need for triaxial tests to determine the response of rock at high temperature. Secondly, a numerical model must be developed to predict the failure and growth of the gasifi~ation cavity (Min, 1983). For a first approximation it has sometimes...

.... Standard drained triaxial test and Ko (zero lateral strain) tests were performed, at room and elevated temperatures. The results obtained are similar to those obtained from other weakly cemented high porosity sedimentary materials. 2 THE MECHANICAL BEHAVIOUR OF HIGH POROSITY WEAK ROCKS...

... triaxial tests. In addition, it presents an overview of wellbore stability technology with a discussion of practical solutions to wellbore stability problems by qualitative and quantitative applications of theory. INTRODUCTION 9ne of the greatest needs in the petroleum lndustry is a predictive method...

... ABSTRACT: The strength characteristics of rocks at depth can be, in the first instance, best revealed by conducting triaxial tests in the laboratory. From the available literature, triaxial test data of a large number of rocks has been used to from an empirical non-linear strength criterion...

... INTRODUCTION The triaxial test has usually been employed to characterize the mechanical properties of rock-like materials in a laboratory. This conventional method, called the single-stage triaxial test (SST) provides only a pair of peak and residual strengths from a single specimen Therefore...

... of hyaloclastites from different localities. On the weakest varieties only soil mechanic triaxial tests were possible. 2 GEOGRAPHICAL GEOLOGICAL CONTEXT Iceland is almost entirely built up of vol- canic rocks which constitute approximately 90 per cent of the surface of the island. The exposed volcanic pile consists...

... Claystone kg cm2 permeability residual soil geotechnical property property index São Paulo compressive strength sandstone mass triaxial test Proceedings of the International Symposium on Weak Rock / Tokyo /21 -24 September 1981 Geotechnical properties of the Bauru sandstone, Sao Paulo, Brazil...

... tendency residual strength line effective stress ratio triaxial test deformation Proceedings of the International Symposium on Weak Rock /Tokyo /21-24 September 1981 Time-dependent characteristics of strength and deformation of a mudstone H.OHTSUKI Tokyo Electric Power Co., Inc., Tokyo, Japan...

... Upstream Oil & Gas US government Reservoir Characterization southern florida wave velocity PSM thompson formation compressional wave velocity triaxial test Refraction study shear wave velocity limestone pressuremeter test fort thompson formation geophysical test Florida dry...