... ABSTRACT The very low permeability of intact salt rocks makes them promising media for the geologic disposal of nuclear waste. However, permeating flow can occur through fractures in rock salt. These fractures can be induced by excavation operations that create a localized damage rock zone...

... ABSTRACT In Germany, rock salt is considered as a possible host rock formation for a repository for high-level nuclear waste. Crushed salt will be used for backfilling and sealing measures of open drifts and shafts, providing the tightness of the repository and the safe containment...

... ABSTRACT Rock salt is produced in large quantities in Pakistan's Salt Range region. Salt tiles, blocks, and lamps are the primary rock salt exports, whilst household usage and the chemical sector are the main local consumers. The size, shape and quality of the block play a role in how...

... and its surrounding evaporite rock. During the full evacuation load case scenario, it was observed peaks of mises stress in the casing ID close to 64 % of its yield stress. In this paper it was also reported and explained an unexpected influence of the creep deformation of the rock salt in the casing...

... ABSTRACT: Gas storage caverns built within rock salt formations experience cyclic loading conditions either when gas is injected into the storage or when the gas is retrieved. The behavior of polycrystalline rock salt under cyclic loading conditions is well documented in the literature...

... with regard to possible failure states. It will be shown that the FTK-simulation tool can be successfully applied to predict the TM-coupled load-bearing behaviour of a storage cavern in rock salt mass as well as of the cavern well during its entire lifetime and gives a detailed insight into stress-strain...

... ABSTRACT: Rock salt formations are a common reservoir seal worldwide with excellent sealing capacity. Restoring the sealing capacity of rock salt caprocks penetrated by wells using the same rock salt as plugging material is therefore an attractive, safe and environmentally friendly option...

...1. INTRODUCTION Conventionally, rock salt formation has been considered as a desirable system for a geological repository of permanent nuclear waste disposal (Urai et al., 1986; von Berlepsch and Haverkamp, 2016). In other words, the combinations of low permeability, high thermal conductivity...

... criterion rock salt Disposal emplacement area flat-bedded salt barrier integrity salt formation integrity disposal option 1. INTRODUCTION With the restart of site selection for a repository for heat- generating radioactive waste in Germany (StandAG 2017, 2013), all potential host rocks (salt...

... Design rock salt power function model power function micro-creep model Upstream Oil & Gas deformation stress level particle psc model Yang salt rock 1. INTRODUCTION Salt cavern underground gas storages (UGS) are recognized as the perfect medium for energy storage and hazardous waste, due...

... Upstream Oil & Gas rock salt investigation fracture length fracture initiation storage cavern hydraulic fracturing criterion vertical stress component numerical calculation natural gas storage calculation specimen zapf stress distribution fracture element propagation...

... flow in porous media Rock mechanics international journal loading Denote Reservoir Characterization plasticity constant strain rate loading creep evolution Fluid Dynamics Mining Science total creep strain darabi Upstream Oil & Gas rock salt mechanics salt rock visco-damage...

... ABSTRACT: This experimental study on rock salt is dedicated to the measurements of water and gas permeability under confinement and to a characterization of the poromechanical behavior. Poromechanical experiments with gas highlight the effect of an internal fluid pressure on mechanical...

... Downstream Oil & Gas Brine rock salt gas storage cavern operation cavern boundary condition zapf rock mass Upstream Oil & Gas temperature distribution gas storage cavern spring conference natural gas storage case 1 cavern wall thermo-mechanical influence internal...

... ABSTRACT: Rock salt exhibits a strain and time dependent response under deviatoric stresses. The practical implications of this creeping behavior have been studied extensively for the design of underground excavations. Advanced constitutive models combined with modern computing capabilities...

... ABSTRACT: For the storage of natural gas, compressed air or hydrogen in rock salt caverns it is necessary to carry out numerical calculations for the dimensioning of the relevant operation parameters. These are on the one hand the allowable maximum and necessary minimum internal pressure...

... and more extensive slip lengths than in case of early reactivation. 1. INTRODUCTION Reservoir Characterization Upstream Oil & Gas reservoir geomechanics caprock rock salt coefficient creep stress condition fault slip fault reactivation nucleation fault segment seismicity...

... to explore the micro-mechanical response to temperature influence, can help us improve the understanding of creep behavior of salt rock in UGS during thermal loading. Reservoir Characterization Upstream Oil & Gas rock salt natural gas storage Simulation PFC model specimen international...

... Abstract: Rock salt provides the world's best barrier, and has thus long been considered as a host rock for nuclear waste repositories. Salt domes have vertical extensions of several kilometres and are consequently well-suited for deep borehole disposal, as an alternative to a mined...

... permeability seal system evolution gas permeability investigation mpa reaktorsicherheit pilot test concrete core upstream oil & gas experiment compressive load salt concrete core flow in porous media seal element rock salt contact seam salt cylinder cylinder brine...