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The module CMP-analysis
consists of two parts (the CMP-velocity-analysis and the CMP-processing).
The module is useful for the following applications:
reflection seismics
GPR (Ground penetrating radar)
CMP-velocity-analysis
The CMP-velocity-analysis allows the calculation of a
one-dimensional velocity-depth- distribution from CMP- or
moveout-data based on different analysis techniques.
The module offers the following possibilities:
- interactive generation and change of a velocity-model for a
CMP- or a moveout-section with continuous indication of the actual
reflections
- semblance analysis for a given velocity-interval,
interactive choice of a vrms-depth- distribution from the
semblance analysis or from the interactive adaptation panel
- loading of a second CMP-section for a parallel adaptation of
the reflections
- loading of a zero-offset section with true distance
information for a calibration of the correspon- ding reflections
- generation of a 2-dimensional velocity-model based on the
resulting 1D-velocity-depth dis- tributions. This 2D-model
represents the base for the stacking.
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CMP-processing
The CMP-processing allows the sorting of raw data to CMP, Common
Shot, Common Receiver and Common Offset. It is very easy to change
interactively between the given sorting possi- bilities.
Stacking of CMP-Gather, Common Shot-Gather or Common
Receiver-Gather is possible based on a 2-dimensional
velocity-distribution (see velocity analysis) or using a slant stack
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There are different possibilities of entering or changing the
geometry:
Two different standard geometries are implemented: moving line and
fixed line.
Activating moving line allows you to define the geometry for a
geophone line moving with the shots.
Activating fixed line allows you to define the geometry for a fixed
geophone line for different shot points.
In addition the geometry of each trace may be edited individually
and the geometry may also be loaded from an ASCII-file. |
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