Difference between revisions of "Seismic scale importance"

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==See also==
 
==See also==
 
* [[Stratigraphic trap]]s
 
* [[Stratigraphic trap]]s
* [[Importance of stratigraphic trap seals]]
+
* [[Stratigraphic trap seals]]
 
* [[Diagenetic impact on traps]]
 
* [[Diagenetic impact on traps]]
  

Revision as of 20:30, 16 May 2014

Exploring for Oil and Gas Traps
Series Treatise in Petroleum Geology
Part Predicting the occurrence of oil and gas traps
Chapter Exploring for stratigraphic traps
Author John C. Dolson, Mike S. Bahorich, Rick C. Tobin, Edward A. Beaumont, Louis J. Terlikoski, Michael L. Hendricks
Link Web page
Store AAPG Store

Scale and data type

Figure 1 . Copyright: Sarg, 1988; courtesy SEPM.

Correlations with well data, such as cuttings, cores, or well logs, can be done to a much higher resolution than seismic scale correlations. The scale of a seismic wavelet limits the scale of correlations within a seismic section. The geologist must refine these correlations to a higher resolution using well data to more accurately define the location of seals and reservoirs.

Scale and trap detection

Scale makes a difference in ease of detection and, hence, affects risk. In Figure 1, Pennsylvanian (323.2 Ma) carbonate reef margin depositional sequences from the Delaware and Paradox basins, U.S.A., are compared. Note the difference in scale and how it affects seismic interpretation. Seismic detection of the Paradox basin traps is much more difficult because of the wavelength of the seismic wave vs. the reservoir thickness.

See also

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Seismic scale importance
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