Localization and Characterization of Hydraulically Conductive Fractured Zones at Seismic Scale with the Help of Geomechanical and Rock Physics Modelingстатья
Аннотация:In the paper an approach to develop a fracture network model is proposed. The key feature of this approach is the
ability to distinguish hydraulically conductive and non-hydraulically conductive fractures. This ability is granted by
modeling the fracture network with the use of rock physics methods using data based on both seismic survey data
and geomechanical modeling results. Following the concept of hydraulically conductive and critically stressed
fractures we carried out an analysis on fractures present in the reservoir to determine which of them are
hydraulically conductive in the actual stress state. Then the fracture network was developed for these fractures
applying the rock physics modeling methods. The integration of geomechanical properties of fractures into rock
physics modeling provided an opportunity to predict how the conductive fracture network would alter with
dynamically changing stress field throughout the reservoir development. A fracture network model was developed
for an oil field in Russia and the results of well productivity analysis provided a solid basis for establishing the
relationship between fracture network model parameters and well productivity. The obtained results strongly
enhance the reliability of fracture network model based on geomechanical modeling results.
