In Oasis montaj 8.5 and Target 8.5 you can now close isosurfaces by wrapping the surface around a range of values, or by selecting all the values above or below a specific cut-off value.
These closed surfaces can be used in voxel math calculations. The Voxel Math Expression Builder tool (under 3D > Voxel Math...) has new options to work open and closed surfaces.
You can apply surfaces in the expression so that your result reflects intersections, proximity, or enclosure. Use these functions to build voxel models from your geology models and attribute geological properties and values to them, or use them as constraints for VOXI inversions. For example, you can specify volumes on both sides of a surface feature such as a fault (open) or isosurface (closed) based on the distance from the surface.
These closed surfaces can be used in voxel math calculations. The Voxel Math Expression Builder tool (under 3D > Voxel Math...) has new options to work open and closed surfaces.
You can apply surfaces in the expression so that your result reflects intersections, proximity, or enclosure. Use these functions to build voxel models from your geology models and attribute geological properties and values to them, or use them as constraints for VOXI inversions. For example, you can specify volumes on both sides of a surface feature such as a fault (open) or isosurface (closed) based on the distance from the surface.