Changes

* To link well log depths to seismic section times.

* To link well log depths to seismic section times.

* To develop an understanding of the causes of constructive and destructive interference patterns of individual wavelets originating from acoustic impedance contrasts.

* To develop an understanding of the causes of constructive and destructive interference patterns of individual wavelets originating from acoustic impedance contrasts.

==Using synthetic seismograms==

==Using synthetic seismograms==

The composite synthetic seismic trace from a synthetic seismogram relates depth information from logs to seismic time. The plots of individual wavelets in a synthetic seismogram show how each impedance interface contributes to the individual reflections. Vail<ref name=ch21r44 />) recommends that seismic sequence analysis and well log sequence analysis be started independently so that boundaries be interpreted as objectively as possible before they are tied together by a synthetic seismogram.

The composite synthetic seismic trace from a synthetic seismogram relates depth information from logs to seismic time. The plots of individual wavelets in a synthetic seismogram show how each impedance interface contributes to the individual reflections. Vail<ref name=ch21r44 />) recommends that seismic sequence analysis and well log sequence analysis be started independently so that boundaries be interpreted as objectively as possible before they are tied together by a synthetic seismogram.

[[:file:exploring-for-stratigraphic-traps_fig21-22.png|Figure 1]] an example of a synthetic seismogram from the Midland basin, Texas.

 

[[file:exploring-for-stratigraphic-traps_fig21-22.png|thumb|{{figure number|21-22}}After .<ref name=ch21r44 />]]

==Procedure==

==Procedure==

| Adjust depositional sequence and systems tract boundaries to the best solution using the ties made in step 2.

| Adjust depositional sequence and systems tract boundaries to the best solution using the ties made in step 2.

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==Example of integrating synthetics==

==Example of integrating synthetics==

[[Synthetic seismogram]]s, or synthetics, can be interactively tied to log, lithologic, and seismic data on geological workstations. The figure below illustrates an example from the Gulf of Suez basin. A wavelet trough forms at a sequence boundary (T55) overlain and sealed by anhydrite and salt. A pronounced wavelet peak forms on an underlying maximum flooding surface. The intervening sequence consists of a lobate deltaic fan formed during a relative high-stand. The transgressive systems tract is thin to absent. The geometry of the fan is clear from the well log and seismic integration.

[[Synthetic seismogram]]s, or synthetics, can be interactively tied to log, lithologic, and seismic data on geological workstations. [[:file:exploring-for-stratigraphic-traps_fig21-23.png|Figure 2]] illustrates an example from the Gulf of Suez basin. A wavelet trough forms at a sequence boundary (T55) overlain and sealed by anhydrite and salt. A pronounced wavelet peak forms on an underlying maximum flooding surface. The intervening sequence consists of a lobate deltaic fan formed during a relative high-stand. The transgressive systems tract is thin to absent. The geometry of the fan is clear from the well log and seismic integration.

==See also==

==See also==