About 3D structural modeling

In 3D structural modeling, you construct the overall structural framework by integrating the stratigraphy of the field and the fault interpretation. The inputs to this operation are your stratigraphic model that defines the zonation and the horizons and markers you use to fill the stratigraphic model with, and your existing fault model.

On the 3D Structure strip (model > 3D Structure), a workflow for constructing a 3D structural model is provided. This Structural Modeling workflow will guide you through the overall process from assigning data to resolving any inconsistencies in the model. Both automated processing steps and various manual editing tools are at your disposal, enabling you to manipulate individual elements of both the inputs and the constructed model.

Important steps in structural model building, and which you find the in the Structural Modeling workflow, are the following:

• Assigning surfaces to the model Select (optional) a fault model, and surfaces from a surface set, or a seismic interpretation
• Horizon clean-up Clean up horizons around faults.
• Surface construction Create horizon surfaces based on the definitions in your model.
• Editing fault cutoff lines Manually edit fault cutoff lines if required, then reconstruct horizon surfaces.
• Well Matching Tie the constructed horizon surfaces to well marker location.
• Cleaning up and editing tri-meshes Clean, edit, and QC your tri-meshes with various tools.

For more information, see Why build a structural model? and Visual QC of (re)constructed surfaces.