Changes

The example in [[:file:seismic-migration_fig6.png|Figure 6]] shows imaging of reflections from steep faults. While migration of CMP-stacked data (not shown here) shows the faulting, reflections from ''the faults themselves'' are absent. Details of the fault reflections seen on the DMO-processed result can be diagnostic of sealing along the faults.

The example in [[:file:seismic-migration_fig6.png|Figure 6]] shows imaging of reflections from steep faults. While migration of CMP-stacked data (not shown here) shows the faulting, reflections from ''the faults themselves'' are absent. Details of the fault reflections seen on the DMO-processed result can be diagnostic of sealing along the faults.

The schematic diagrams shown here have been two-dimensional (2-D) representations, and the illustrations have all involved 2-D migration of 2-D seismic data. Invariably, the earth's subsurface has three-dimensional (3-D) complexity. As a result, the mispositioning of recorded reflections extends in two lateral directions, and migration must be done as a 3-D process (see “[[Three-dimensional seismic method]] for Reservoir Development”).). It suffices here to state that migration is fundamentally incomplete unless it is applied as a 3-D process to 3-D data.

The schematic diagrams shown here have been two-dimensional (2-D) representations, and the illustrations have all involved 2-D migration of 2-D seismic data. Invariably, the earth's subsurface has three-dimensional (3-D) complexity. As a result, the mispositioning of recorded reflections extends in two lateral directions, and migration must be done as a 3-D process (see [[Three-dimensional seismic method]] for Reservoir Development). It suffices here to state that migration is fundamentally incomplete unless it is applied as a 3-D process to 3-D data.

==See also==

==See also==