In this study of the Kaybob area of the Duvernay formation, a process for fracture design optimization utilizing an expanded work flow was developed. Geologic maps of reservoir properties were created using specific wells selected after conducting a field-wide analysis of the geological parameters relative to fracture analysis. The result was an increased understanding of how the reservoir properties relate to various locations throughout the entire reservoir area studied rather than only a well-by-well analysis basis.
The following is an overview of the workflow used:
Importation of public domain log data for multiple wells in study area.
Analysis of raw log data to calculate input data for fracture simulator.
Use of calculated log parameters in geological modeling software for creation of representative three-dimensional (3D) reservoir grids of reservoir pressure, relative oil permeability, porosity, and water saturation.
Selection of representative wells based on accessing both typical and anomalous geological parameters as observed in the model.
In addition, a discussion is provided of the following:
Typical fracture design parameter ranges.
How reservoir maps may be used to populate the grid in a fully compositional numeric reservoir simulator.
The advantages a compositional reservoir simulator with dual permeability capability provides in characterizing production from a gas-condensate reservoir with complex fracture geometry.
Fracturing fluid types considerations.