WP 3 applies results in WPs 1-2 to assess the Horda Platform with the following tasks:
- Develop a two-stage simulation approach to handle feedback between site and regional scales: (i) properties from the site-models, including wells and fluid properties, are superimposed on corresponding subsets of the grid cells in the coarser regional model; (ii) fluxes from the regional simulations are projected onto the boundaries of the site-models to act as dynamic boundary conditions for the local simulations. The subsets of the grid cells in the coarse model that corresponds to individual sites are assumed to only communicate through the water phase to avoid mixing of fluids with different properties.
- Analyse the two-stage approach developed in Task 1.1 using domain decomposition theory (e.g., subspace correction methods). Complement analysis with numerical experiments with comparison with fully coupled multi-physics resolved simulations on simplified cases. Based on these findings develop improved coupling scheme that targets critical issues.
- Improve regional simulation model concept from Task 1.1-1.2. Create a range of regional simulation models with different resolution and physics based on the regional model for the Horda platform developed in Task 3.1. Compare against a model where the resolution of the regional model is in the same order as the site models and give guidance on resolution and necessary physics in the regional model. Develop approach to improve static and dynamic properties (e.g., porosity, net-to-gross, permeability, relative permeability) in the regional model by inheriting data from fine-scale site simulations.
- Develop a cloud-based and collaborative open-access regional model concept. Demonstrate coupling of individual site simulations with the regional model in realistic settings. e.g., multiple sites both petroleum and storage using different third-party simulators (e.g., Eclipse, PFlotran-OGS) specialized for the given conditions that apply to the individual sites.