.... Reservoir Characterization smectite shale land movement mapping sandstone Claystone Upstream Oil & Gas geotechnical investigation Indonesia shear strength illite water content Colluvium layer stability elevation impermeable layer landslide investigation resistivity citatah area...

... ABSTRACT: The geotechnical factors controlling the design of the open pit slopes of the Pasminco Century Mine near Lawn Hill, Queensland are presented below. Pasminco Century is a stratiform shale hosted zinc deposit in the Lawn Hill Formation which is overlain in part by the Thorntonia...

... permeability tests, including rising and falling head tests in piezometers with screens in the sands and clays, and packer tests in the shale/laminite. reservoir geomechanics strength hydraulic conductivity Reservoir Characterization Fluid Dynamics diaphragm wall basement Upstream Oil & Gas...

... of the slope, detailed geological investigations were carried out on this area. geological investigation shale investigation landslide Reservoir Characterization borehole ooseuchidani river talus deposit Upstream Oil & Gas volcanic ash trench investigation bedding plane upper reservoir...

.... fragile rock ground condition overbreak closure Reservoir Characterization quartzite dia face collapse renewable energy shale gneiss phyllite limestone Upstream Oil & Gas tunnel face sandstone schist Himalaya tunnel rock mass lesser himalaya thrust geology CHALLENGES...

..., 1974; 1994). There are two main types of colliery spoil: burnt and unburnt. Burnt colliery spoil, BCS, (burnt shale or burnt minestone) generally has better engineering properties than unburnt colliery spoil, UCS, (unburnt shale or unburnt minestone) and consequently has a higher utility. The most...

... for this type of fine-grained sedimentary rocks that may be used for predicting uniaxial compressive strength from the available information on water content. INTRODUCTION Fine-grained sedimentary rock in this study includes mudrock or shale. This type of rock is formed in both marine and nonmarine...

... ABSTRACT: An experimental study was conducted to investigate the change in the shear strength of expansive soils with the amount of swell. Two series of tests were performed using two types of expansive soils: shale and bentonite. Swell tests were carried out using a hydraulic triaxial stress...

... paragraphs. (Figure in full paper) Reservoir Characterization footwall Upstream Oil & Gas metals & mining pillar foundation failure structural geology displacement mechanism seismic event dip side Longwall intermediate depth shale seismicity seismic activity quartzite stope...

... were a limestone, a shale and several sandstones with varying degrees of anisotropy. The tests, were undertaken using a 'state of- the-art', closed-loop, servo-controlled rock mechanics test facility, capable of high quality thermo-hydro-mechanical acoustic testing under conditions of elevated...

... 1500 m) which covers most of the reservoirs in the North Sea. Even if it is of course variable from one place to another, it is mainly composed of clayey formation, claystone at the top and more indurated shale at the bottom. In that particular case, the well was drilled with a 12" 1/4 bit. The bottom...

... Abstract: The effect of partially dehydrated clays on the adsorption potential of shales is presented, along with the resulting movement of fluids and the generation of swelling pressures. An experimental test cell is described which measures fluid diffusion rates for shale-fluid systems under...

... ABSTRACT: Drilling problems are frequently encountered throughout the Tertiary section in the North Sea. The problems are mainly to be associated with smectitic shales and tuffaceous sediments. Typical problems are drill tool sticking and lost circulation. The causes of borehole instability...

... ABSTRACT: The influence of confining pressure on the indentation response of rocks is analyzed. Special attention is given to shales which often cause problems during drilling. To take into account the influence of failure mechanisms during indentation, two indentation parameters are defined...

... ABSTRACT: Advances in wellbore stability and shale technology have long been sought because shale instability has consistently produced the highest drilling trouble costs. Most wellbore stability problems occur in shales. Wellbore instability in deep, shale formations is the major cause...

... station consists in a V-shaped canyon with a floor 15 to 20 m wide. The slopes of the canyon are mainly composed of volcano-tufogene rocks of the Bajocian stage formation interlaid with tuff and lava breccia, porphyrites, tuff sandstone and shale. Shale and sandstone of the upper Lias are exposed...

... Tousheh river shale operation construction Upstream Oil &amp; Gas steel conduit sandstone topographical configuration tunnel hydro-fracture test headrace tunnel river Rod< Mechanics and Power Plants, Romans (ed.)C 19BBBslkerns, RottBrdsm.ISBN906191827B Mingtan headrace tunnels crossing...

... tunnel s and canal. The SAB #2 project included twin 9 km long tunnels, each with 15.5 m excavated and 13.7 m finished diameters. As illustrated in the geologic section in Figure 1, the twin tunnels were excavated in horizontally bedded sandstone, shale, dolomite and limestone units of the Silurian age...

... SUMMARY The performance of a 235 m deep circular shaft wit~ a finished diameter of 4.3 m, excavated by conventional shaft construction techniques in clay shale, was monitored by measuring the rock mass displacement field, the rock stress changes which occurred during the shaft advance...

... ABSTRACT Triaxial creep behavior of oil shale is being investigated in the laboratory at simulated in-situ conditions. A range of temperature and stress conditions are chosen to represent those within the interchamber pillars of a modified in-situ retorting operation. Oil shale in grades...