Coupling fracture facies with in-situ permeability measurements to generate stochastic simulations of tight carbonate aquifer properties: Example from the Lower Cretaceous aquifer, Northern Provence, SE France

摘要: Summary The relationships between fracture facies and permeability distribution have been explored using a well-constrained 3D implicit structural model of hemipelagic low porosity/low carbonate from the Northern Provence region, SE France. Fracture were determined an extensive dataset 99 hydrogeological wells. Data processing was undertaken step-by-step approach, involving: (i) identification based on well logs detailing structure stratigraphy; (ii) determination priori correlation dimension hydraulic radius influence (deduced slug test analyses) type reservoir heterogeneity (fissure, fracture, fault zone, etc.); (iii) three dimensional plot in geological variographic analysis data. Thirty-three sequential indicator simulations (SIS) geostatistic analyses realised both facies. Finally, connectivity algorithm developed to compute probability connection selected infiltration areas major aquifer springs via moderate- high-permeability bodies. Key results are: zones greater role controlling than repartition; there is little distributions; highlight compartmentalisation aquifers Cadarache area, extensions permeable bodies being limited by N130 faults.