Ensemble Contour Maps
ResInsight can create contour maps from an ensemble of grid models based on different forms of aggregation of 3D reservoir simulation data onto a 2D plane.
Video Tutorial: Ensemble Contour Map
Creating Contour Maps
Use Import Grid and Summary Ensemble to import the grid ensemble. Select Create Grid Ensemble, choose the realizations to import, and click OK. See Grid and Summary Ensemble for details.
Right-click the imported grid ensemble in the Project Tree and select New Ensemble Contour Map.
Creating Contour Maps (obsolete from version 2026.09)
Import grid models using the File->Import->More->Create Grid Case Ensemble. The grid models can have individually specified geometry. For grids with equal geometry, consider using Grid Case Group. The formation information is imported for each grid.
Select “New Ensemble Contour Map” from the right-click menu on the grid ensemble.
Properties of the Contour Maps
The General group is used to define how to compute the contour map. See Contour Map for details.
The grid case model defined by “Primary Case” is used for fault and simulation well visualization. The 2D area used to evaluate the contour map values is based on the bounding box of the Primary Case. Use Bounding Box Expansion to ensure that the area covers the geometry variation within the ensemble.
Time Step Selection
Select the time steps to compute the contour map for.
Data Filter
Select a Data Filter to compute the contour map from a subset of the grid cells, for example a set of formations or a property value range. Only cells accepted by the filter are used. The Data Filter group is shown when the grid ensemble has at least one data filter.
The filter is evaluated for each realization, so a property filter or a formation filter can select different cells in each realization. If the filter is based on a dynamic property, the cells are selected per time step, also when the contour map shows a static property.
Click Compute to apply a changed filter selection. The name of the active filter is shown as overlay text in the contour map view.
Create Data Filters
Data filters are defined on the grid ensemble and can be shared by several ensemble contour maps. Right-click the grid ensemble in the Project Tree and select a filter from the Data Filters sub menu:
- New Property Filter – select cells by property value or category. Use the Formation Names result type to filter on formations. See Property Filters.
- Polygon Filter – select cells inside a polygon.
- Range Filter – select cells in an I, J or K range.
The filters are listed in a Data Filters folder under the grid ensemble. The formations for each realization are imported automatically, see Automatic Import for Grid Case Ensembles.
Note
The Formation Selection group used in earlier versions has been replaced by data filters. A formation selection stored in a project from version 2026.09 or older is no longer applied, and a warning is shown in the log when the project is opened. Create a property filter on formation names to get the same result.
Result Definition
Select the property to compute the contour map for.
Performance Considerations
When working with multiple grid models, importing and processing data will take time. Understand how to limit the data involved in calculations, and consider a test run with a small number of realizations before using the full ensemble.
Consider setting the Sampling Resolution to coarse to improve performance. Note that this option will introduce some interpolation effects.
Click the Compute button in the Property Editor to start the computation.
Display of Contour Map Data
A view is automatically created and displayed when the computation is completed. Select the Map Projection object to control the display. Create additional views from the right-click menu of the Ensemble Contour Map object.
Select the current statistical property from Statistics Type. A value filter can be used to filter the display of the contour map.
Create Polygon
Select “Create Polygon from Contour Map” from the right-click menu. This will create a polygon of the outline of the contour map. The shape of the polygon can be simplified using the right-click menu of the generated polygon.