Difference between revisions of "3-D seismic data views"
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==Vertical slices== | ==Vertical slices== | ||
| − | As it arrives on tape from the processor, 3-D seismic data are organized into lines composed of | + | As it arrives on tape from the processor, 3-D seismic data are organized into lines composed of [[trace]]s. In the computer these are all merged into a dense cube of data. The data cube can be sectioned, or sliced, in several ways. Vertical cuts through the data cube are called '''lines''' or '''sections'''. For marine surveys, [[in-line]] is the direction of boat movement (parallel to receivers) and [[cross-line]] is perpendicular to boat movement. For land surveys, there is no uniform definition of in-line and cross-line. A vertical section that is neither in-line nor cross-line is an arbitrary line and may be oriented very irregularly as needed to pass through locations of interest. |
[[:file:interpreting-seismic-data_fig12-5.png|Figure 1]] shows how the vertical slices are labeled, depending on their orientation. | [[:file:interpreting-seismic-data_fig12-5.png|Figure 1]] shows how the vertical slices are labeled, depending on their orientation. | ||
Revision as of 11:58, 28 March 2014
| Exploring for Oil and Gas Traps | |
| |
| Series | Treatise in Petroleum Geology |
|---|---|
| Part | Predicting the occurrence of oil and gas traps |
| Chapter | Interpreting seismic data |
| Author | Christopher L. Liner |
| Link | Web page |
| Store | AAPG Store |
Vertical slices
As it arrives on tape from the processor, 3-D seismic data are organized into lines composed of traces. In the computer these are all merged into a dense cube of data. The data cube can be sectioned, or sliced, in several ways. Vertical cuts through the data cube are called lines or sections. For marine surveys, in-line is the direction of boat movement (parallel to receivers) and cross-line is perpendicular to boat movement. For land surveys, there is no uniform definition of in-line and cross-line. A vertical section that is neither in-line nor cross-line is an arbitrary line and may be oriented very irregularly as needed to pass through locations of interest.
Figure 1 shows how the vertical slices are labeled, depending on their orientation.
Horizontal slices
Horizontal or subhorizontal cuts through a seismic data cube are called slices. As illustrated in Figure 1, horizontal slices can be
- Time slices (horizontal cuts of a time cube)
- Depth slices (horizontal cuts of a depth cube)
- Horizon slices (from tracking)
- Fault slices
Depth slices are only available if the data delivered from the processor are converted to depth. Fault slices require very high-quality data with clear, mappable fault surfaces. Both are rarely encountered.
See also
- Phases of a seismic project
- Recurring themes
- 3-D seismic: the data cube
- Components of a 3-D seismic survey
References
- ↑ Liner, Chris, Elements of 3-D Seismology: Tulsa, PennWell.
External links
| find literature about 3-D seismic data views |
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