Discussion

In this example we use StructureSolver to restore a seismic section that images a contractional triangle zone in the Alberta Foothills. There is a complex set of imbricated and intersecting faults.

Even though the restoration does not embody a flexural slip mechanism, which would be most accurate for this contractional regime, the results of the restoration are helpful in that they provide first-order unfaulting and unfolding of the seismic image.

Note that no special preparation for restoration was done, despite the complexity of the section.  StructureSolver automatically connects horizon segments across faults in the correct way.

The restoration process has the following benefits:

• Shows the seismic data unfaulted and flattened
• Quickly gives an estimate of the amount of contraction and confirms line length balance between two different horizons
• Provides insight into the sequence of fault development.

Note also that StructureSolver restoration is capable of dealing reasonably well with crossing faults, provided that care is exercised.

Example courtesy of Professor Don Lawton, University of Calgary.