The geological reservoir model can be easily upscaled inside JOA® Jewel Suite™ using the same JOA® Gridding method as for the geological model. Due to the flexible setup of the JOA® Grid the upscaling process is fast and consistent, providing an optimal reservoir simulation grid for the anticipated recovery process, using various techniques to up scale the properties.
The geological grid can be upscaled in various ways:
- Lateral: various grid stacks are grouped together
- Vertical: various model layers are grouped together
- Cropped: select a lateral sub-set of stacks
The grid properties can be upscaled using various methods:
- Average (arithmetic, geometric, harmonic)
- Weighted average (arithmetic, geometric, harmonic)
- Resistance
- Sum
- Min / Max
- Most occurring
After creating the simulation grid, transmissibility properties can be calculated using the permeability properties (Kx, Ky, Kz) as inputs. These properties are a measure for the transmissibility of fluids between adjacent grid cells and are used in the reservoir simulation. During this calculation all non-neighbor connections will be calculated for each fault interface. These connections are used for the Reservoir Simulation process as well.
Additional to upscaling your geological models, you can also use this process to calculate Well Productivity index and Aquifer connections. These will be used as well in the Reservoir Simulation processes.
Example: Vertical upscaled simulation grid (5 simulation layers) with as input a geological model (30 layers) with porosity property