1.5.2 New Capabilities in v2.0
In support of these design objectives, RESQML now includes these new or enhanced capabilities:
- A subsurface knowledge hierarchy based on “features, interpretation, representations and properties” that describes subsurface features, multiple interpretations of those features, multiple representations of those interpretations, and the properties that may be "attached to" the representations.
- Provides a standard methodology for the representation of subsurface scenarios and uncertainty.
- Support for structural, stratigraphic, and reservoir models, referred to as organizations.
- At the interpretation level: definition of the involved geologic features with their relationships, i.e., contacts and their characteristics, within the context of the model.
- At the representation level: topology and geometry of the model, either surface or volume. Ability to define contacts using nodes of associated geologic features.
- Associations between structural and stratigraphic features with the 3D reservoir grid.
- Achieved using subrepresentations of the grid, which are defined by selecting particular elements of the grid such as the layers, pillars, cells, cell faces, etc.
- Structured and unstructured grids or a mixture of both. New grid capabilities include:
- Block-centered grids defined by cell-centered geometry and properties, and their associated connectivity, to support both simple grids and current unstructured simulators.
- Polyhedral and perpendicular-bisector (PEBI) grids to provide the visualization and geometry required by current fluid flow and geomechanical reservoir simulators.
- Corner-point grids as used by reservoir simulators.
- Tetrahedral grids as used by geomechanical simulators.
- Ability to use parametric lines for pillar grid definitions.
- Simplified grid descriptions for simple grid types, e.g., rectilinear or tartan grids.
- Higher order extensions for grid cell geometry and for grid properties.
- Use of wellbore information from WITSML, the Energistics exchange standard for well and log information, which includes:
- Support for wellbores, trajectories, logs, markers, and blocked wellbores.
- Use of HDF5 storage.
- Reference to existing WITSML data.
- Support for multiple topologies, geometries, and properties for multiple time steps and multiple model realizations.
--These capabilities are shared across the schema and are not restricted to specific data objects.
- Ability to transfer only those parts of a model that have changed (partial model transfer), which enables the workflow flexibility to test alternative scenarios and characterize the range of uncertainty in structural and stratigraphic frameworks, as well as reservoir rock and fluid properties.
- Ability to group a variety of data objects and files from multiple sources into a single "package" for transfer using the new Energistics Packaging Convention (EPC), which is an implementation of the Open Packaging Conventions (OPC) standard.
- Ability to combine data referenced to different coordinate reference systems (CRS), for example, a RESQML reservoir model and WITSML wellbores, trajectories, and markers. The RESQML package supports a single global CRS and one or more local CRSs.