... and the arrangement of the caverns are dependent on the state of stress in the earth crust and the rock mass quality. For the storage of oil the group is favourably designed with a central shaft, where pumps and most of the control devices are placed. The storage caverns are placed in one or several hexagons or rings...

... geometric effect dependent on the dimensions of the opening and the depth below the natural water table but not on the permeability of the rock mass. Lowering of the water table, and the resulting "desaturation" of the rock mass, may be prevented by artificial recharge from a system of tunnels and boreholes...

... Upstream Oil & Gas cavern gas leakage rock mass flow in porous media Fluid Dynamics natural gas storage borehole Downstream Oil & Gas water leakage water pressure ground water level seepage flow hydraulic gradient oil storage storage cavern water injection borehole...

... solenoid. Because of the high containment loading generated by the magnetic field, the most economic containment is an underground structure where the rock mass can be used to sustain the loads. Until recently, the major effort has been devoted to electromagnetic and cryogenic research, but, as reported...

... will be expanded by sampling in the deepened vertical borehole. d) The intluence of the blasting on the hydraulic end mechanic propertiea of the rock mass around a drift will be studied. e) The analysis and interpretation of the forthcoming results will form the bas18 for the continued development of methods...

... waste types is the heat-generating capacity of the high-level waste, which can perturb the structural, hydrological, and geochemical characteristics of the rock mass. These perturbations can be minimized by reducing the thermal power density in the repository (i.e., by increasing the spacing between...

... waste management Reservoir Characterization reservoir geomechanics Upstream Oil & Gas metals & mining production logging production monitoring coworker production control calculation Lawrence Berkeley Laboratory rock mass Stripa granite rock property kw heater heater...

... invisible is to put the tank completely underground. And the most economical way of doing this, is to use the rock mass as the con- struction material, i.e. making caverns for the water in the bedrock. A rock cavern tank will normally consist of an access tunnel and one or two (or more) chambers in the form...

... volumes will be needed to cover even a small part of the energy requirement for heating in Sweden. In particular storage of heated water in rock caverns or storage of heat direct .in.pete~ rock masses are judged to be most interesting due to common 571 . 572 s. Bjurstrom. P. O. Karlsson and J. Martna...

... water and air temperatures. MODES OF CAVERN INSTABILITY Definitions of Stability and Instability Stability is defined as the intrinsic capability of a body to maintain its original structural integrity when disturbed from a condition of static equilibrium. When the rock mass is subjected to a system...

...A CROSS-HOLE SEISMIC INVESTIGATION OF A ROCK MASS B. N. P. Paulsson* and M. S. King** *Department oj Energy, Geoscience, and Lawrence Berkeley Laboratory, "Department oj Engineering, Geoscience, University oj California, Berkeley, Calif. 94720, USA ABSTRACT A cross-hole high-frequency acoustic...

.... Reservoir Characterization cavern reservoir geomechanics bentonite-quartz compound solid waste management rock cavern waste canister transportation tunnel Akesson rock mass canister excavation storage clay barrier heat stack Bergman operation shaft repository nuclear waste Compound WP...

... stress regimes in the rock mass: one on the out- side of the tunnels in which the high horizontal stresses are active, and the other on the inside of the tunnels which shield the rock core bounded by the annular caverns. Excessive radial movement (>15 cm) of the rock walls under the complex applied loads...

... the wastes and the rock mass, which could lead to a disintegration of either the waste products or the rock mass. The natural barriers are the rock masses containing the wastes. They should, above all, either make impossible or at least on the basis of the natural hydraulic conditions, greatly limit...

... options for disposing of radioactive waste from the nuclear power industry is to bury it in depositories deep in hard rock (KBS. 1977; Roberts. 1979). The heat gener- ated by the decaying radionuclides in high level waste would be dissipated largely by thermal conduction using the rock mass as a heat sink...

... Upstream Oil & Gas borehole characteristic Reservoir Characterization Gale experiment flow in porous media hydraulic conductivity fractured rock Fluid Dynamics groundwater Flow System Witherspoon fractured granite excavation rock mass fracture permeability preliminary...

... Reservoir Characterization reservoir geomechanics Germany Disposal stable gallery metals & mining rock disintegration gallery ore formation Upstream Oil & Gas federal republic rock mass deep ore formation rock formation iron ore formation mechanical stability nuclear...