Fault Import

The Fault Import dialog allows you to import text data representing fault segments.

General Information

Input Files

Specify the files to import.  You can import more than one file of the same format at a time.

File Format

Specify the type of file being imported.

• Photon ASCII: This is the format exported from SeisX.
• Columnar ASCII: This is generic columnar data ASCII data.
• Landmark Export (3D Only): This is the export from SeisWorks.  The format of the file is the same as the Landmark Export (2D/3D) however use this option when importing into a single 3D survey to improve the speed of the import.
• Landmark Export (2D/3D): This is the export from SeisWorks.  The format of the file is the same as the Landmark Export (3D Only) however use this option when importing into 2D lines or multiple 3D surveys.  Because it is necessary to map the fault nodes to the individual 2D lines, this import will take significantly longer than the 3D Only import.
• Photon Stratigraphic Symbols: This is the stratigraphic symbol export from SeisX.  Stratigraphic symbols can be imported as single node faults.
• GeoFrame ASCII – This is the export from GeoFrame and many other packages.
  
  

Additional Parameters

Specify additional parameters for the import.

Define Columns: Use this dialog to specify the format of  the file when importing columnar data.  You need to define the Fault Name, X, Y , Z, Line ID, and Segment ID. For help with this step refer to the defining columns help document.

Units: Select the units that the original fault data is in. Options are Milliseconds, Meters and Feet.

Depths are Subsea: Check this item when importing depth faults that were exported as subsea.

Subtract bulk shift from the database: Check this item to remove the static shift that has been applied to each line from the imported faults. Normally you will leave this item unchecked, but some faults such as those exported from Landmark and Kingdom already have the static shift applied. Checking this item will remove the static shift so the faults appear at the correct vertical location. The working set file for a given seismic line is the file that is used to determine the static shift.

Bulk Shift: Add a static shift to the imported faults. Normally you will leave this as zero, but occasionally you will receive data that has been exported with static shifts already applied. This allows you to correct the z value of the faults on import.

If Fault Already Exists

Specify the behavior fault already exists in the project that has the same name as a fault in the import file.

Do not overwrite: Selecting this option preserves the existing fault in the project.

Overwrite existing fault: Selecting this option will completely overwrite an existing fault.

Append segments: Selecting this option will not overwrite any existing segments of a fault, just append the new segments in the file to the existing fault.