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Fault Marking - Overview

Fault marking in WinPICS is quick and easy. You can add fault branches to your main fault in areas of complex faulting; use volume interpolation to interpolate your fault across the seismic volume; edit faults by clicking and dragging the fault corners; pick fault traces in the Map window, and quickly move through the seismic volume to view faults using WinPICS hot keys.

Marking Faults on Your Seismic Section

1. Click the Mark Faults button to enable fault marking mode.
2. Select an active fault for marking by either:

• Clicking on the Active Fault button to display a drop down list of faults in the database.

• Clicking the Show List of Horizons/faults button on the Horizon Picking toolbar.

• Clicking on a fault annotation tag to set the fault active for marking.

• Toggle the Previous or Next buttons to cycle through faults in the database.

• To create a new fault, click the Show List of Horizons/faults button on the Horizon Picking toolbar. The Horizons Management dialog box will open. Right-click the Faults folder and select New Fault from the shortcut menu.

3. The name of the fault will appear on the Active Fault button. Begin defining your fault by left clicking on the seismic at one end of your fault.
4. Drag your cursor along the fault plane and left click again. This will define the end of the first segment. Circles appear at the beginning and end of segments. Continue defining the fault in this manner.
5. Right-click to end your fault marking.

• A fault interpreted on in-lines may be difficult to edit on cross-lines. If you choose to do so, the straight line continuity of the fault segments may be compromised. Fault corners are displayed as squares instead of circles to warn you that you may be trying to edit a fault in cross-section.
• Marking, editing, or interpolating faults creates a fault guard zone by removing horizon picks on the traces adjacent to the fault trace. After editing a fault, you can re-pick your horizons up to the fault or have WinPICS calculate contact points from the nearest horizon picks.

What do you want to do?

• Edit your fault
• Volume interpolate your fault across the 3D volume
• Pick your fault in the Map window
• Move through a 3D seismic volume
• Display contact points at the intersection of horizons and fault markings
• Calculate contact points for horizon intersections with faults