Seismic data and mapping structure
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Whether doing 2-D or 3-D seismic interpretation, the tasks are fundamentally the same. The work can sometimes be done by hand for 2-D data (paper sections and manual contouring of maps) but virtually requires computer assistance for 3-D data. The recipes described on the pages that follow apply to hand or computer work.
Four basic techniques
There are four basic techniques for getting structure from seismic data (the names are not standard).
| Technique | Description |
|---|---|
| Classic | Mapping a surface of interest (from data) using average velocities |
| Modified Classic | Mapping a surface of interest using a densely drilled shallow horizon, avoiding the weathering layer at the earth's surface |
| Migrated Depth | Mapping an area using a 3-D seismic data cube with the vertical axis converted to depth (commonly used in complex areas but needs manual tweaking to match well control to seismic data) |
| Volumetric Depth Conversion | Mapping an area using migrated seismic data (with time axis) converted to a depth cube using a V ( X, Y, Z ) velocity model |
See also
External links
| find literature about Seismic data and mapping structure |
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