10,323
edits
Changes
Jump to navigation
Jump to search
Line 16:
Line 16: − + − [[file:seismic-inversion_fig1.png|left|thumb|{{figure number|1}}A flowchart showing the general concept behind seismic Inversion.]]+ − + − [[file:seismic-inversion_fig2.png|thumb|{{figure number|2}}Band-limited inversion of several traces around a reef. The integrated sonic log from the reef well is shown as the dark trace in the central part of the figure.]]+
→Seismic inversion methods
==Seismic inversion methods==
==Seismic inversion methods==
<gallery mode=packed heights=200px widths=200px>
seismic-inversion_fig1.png|{{figure number|1}}A flowchart showing the general concept behind seismic Inversion.
seismic-inversion_fig2.png|{{figure number|2}}Band-limited inversion of several traces around a reef. The integrated sonic log from the reef well is shown as the dark trace in the central part of the figure.
</gallery>
As just mentioned, seismic data give us a “fuzzy” picture of the subsurface over a large area, whereas wells give us detailed geological information at a few points. This suggests a general approach to the seismic inversion method, as shown in [[:file:seismic-inversion_fig1.png|Figure 1]]. On the left side of this flowchart, the input is our best reflectivity estimate from the seismic data. On the right side, we introduce geological constraints taken from a sonic log or seismic velocity information and produce a forward model. We then combine the information from the seismic data with controlling information from the seismic model and produce a final inversion result.
As just mentioned, seismic data give us a “fuzzy” picture of the subsurface over a large area, whereas wells give us detailed geological information at a few points. This suggests a general approach to the seismic inversion method, as shown in [[:file:seismic-inversion_fig1.png|Figure 1]]. On the left side of this flowchart, the input is our best reflectivity estimate from the seismic data. On the right side, we introduce geological constraints taken from a sonic log or seismic velocity information and produce a forward model. We then combine the information from the seismic data with controlling information from the seismic model and produce a final inversion result.