Creating a fault from a fault centerline

The centerline objects can be used to triangulate a fault surface in another way. If your data includes polylines that describe the intersection of a specific fault with various horizons, you can create separate polyline objects for the centerlines of all these intersections. With the Move Polyline To Other Set tool (Tools > Editing Tools > Polyline set Tools) you can merge these polylines objects into a new polyline set, and then triangulate this polyline set into a fault surface.

If you need to create a fault centerline or perform triangulation of polyline or point sets, see the other triangulation tools.

1. Select a model.
2. From the list of the available fault centerlines in the model, select the centerlines by checking the individual check boxes, or by right-clicking the list and making a selection from the context menu.

3. Control the triangulation by specifying the following variables:

   Distance up  The upward extent of the tri-mesh computed from the center line.

   Distance down  The downward extent of the tri-mesh computed from the center line.

   Dip  The dip angle of the tri-mesh that will be created. A dip angle of 90° will create a vertical fault. The dip direction of the fault is ‘guessed’ based on the shape of the fault line. If this results in a fault dipping in the wrong direction, then enter a negative dip angle.

   Triangle size  The size of the triangles that are created.

4. To create separate tri-meshes for each polyline inside the selected polyline set, check Create a separate fault for each centerline in a set.
5. Click Apply or OK.