Hydraulic characterization and upscaling of fracture networks based on multiple-scale well test data

摘要: Hydraulic properties and upscaling characteristics of low-permeability fractured rock are analyzed based on systematic well test data from three different measurement scales. First, tests simulated in a large number geological fracture network realizations, the acceptable transmissivity distribution parameters that produce observed statistics two smallest scales, i.e., 2-m 10-m defined. Instead single value, range parameter values can be found to result. Second, simulations carried out with calibrated networks. These indicate investigated system cannot properly modeled by means continuum tensor presentation but would better represented “equivalent fracture” statistics. Third, conductive 30-m blocks compared results same scale. The this preliminary analysis one-dimensional borehole observations interpreted standard continuum-based methods may considerably underestimate three-dimensional heterogeneous, noncontinuum media.