IAHS-AISH publication · 2000 · 15 citations · 0 references
EngineeringEarth SciencesGeological EngineeringReservoir EngineeringReservoir SimulationSubsurface Fluid FlowDual-porosity ModelingFractured Reservoir FlowFractured Reservoir SimulationNaturally Fractured ReservoirsPorosity AnalysisRock PropertiesAquifer RecoveryAquifer StorageAquifer Storage ModelingPorositySolute TransportSolute Transport In Fractured RockSolute Transport ModelingTracer Transport In Dual-porosity Media
A novel form of double-porosity solute transport model has been developed which discretizes the flow velocity and fracture space while keeping time and space within the rock matrix as continuous variables. The method leads to a solution in terms of sums of Green's functions. The model is characterized by two parameters, a characteristic diffusion time and a porosity ratio, and also by the shape of the blocks. Blocks of any well-defined shape can be simulated, as can mixtures of blocks of different shapes and size distribution. An approximate method has been found for extending the model to simulate de-saturation and re-saturation of the fractures. General insights from development of this model are important to tracer testing in double-porosity media, and are demonstrated through a case study of analysis of an aquifer storage recovery (ASR) test.