Difference between revisions of "3-D seismic data views"
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| part = Predicting the occurrence of oil and gas traps | | part = Predicting the occurrence of oil and gas traps | ||
| chapter = Interpreting seismic data | | chapter = Interpreting seismic data | ||
| − | | frompg = 12- | + | | frompg = 12-11 |
| − | | topg = 12- | + | | topg = 12-11 |
| author = Christopher L. Liner | | author = Christopher L. Liner | ||
| link = http://archives.datapages.com/data/specpubs/beaumont/ch12/ch12.htm | | link = http://archives.datapages.com/data/specpubs/beaumont/ch12/ch12.htm | ||
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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 [[Basic seismic processing|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. | ||
| − | [[file:interpreting-seismic-data_fig12-5.png|thumb|{{figure number|1}}Examples of vertical and horizontal slices. From Liner.<ref name=Liner_1999>Liner, | + | [[file:interpreting-seismic-data_fig12-5.png|300px|thumb|{{figure number|1}}Examples of vertical and horizontal slices. From Liner.<ref name=Liner_1999>Liner, C., 1999. Elements of 3-D Seismology: Tulsa, PennWell.</ref> Courtesy PennWell.]] |
==Horizontal slices== | ==Horizontal slices== | ||
| − | Horizontal or subhorizontal cuts through a seismic data cube are called slices. As illustrated in [[:file:interpreting-seismic-data_fig12-5.png|Figure 1]], horizontal slices can be | + | Horizontal or subhorizontal cuts through a seismic data cube are called horizontal slices. As illustrated in [[:file:interpreting-seismic-data_fig12-5.png|Figure 1]], horizontal slices can be |
* Time slices (horizontal cuts of a time cube) | * Time slices (horizontal cuts of a time cube) | ||
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* [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store] | * [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store] | ||
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[[Category:Interpreting seismic data]] | [[Category:Interpreting seismic data]] | ||
| + | [[Category:Geophysical methods]] | ||
| + | [[Category:Treatise Handbook 3]] | ||
Latest revision as of 19:06, 27 January 2022
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 horizontal 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
References
- ↑ Liner, C., 1999. Elements of 3-D Seismology: Tulsa, PennWell.
External links
| find literature about 3-D seismic data views |
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