3D seismic interpretation and forward modeling – an approach to providing reliable results from 2D seismic data

AUTHORS: Omid Ahmadi, Peter Hedin, Alireza Malehmir, Christopher Juhlin

ABSTRACT: Accurate 3D interpretations is challenging when only 2D seismic reflection data are available. This can be compensated for by using additional data. Here we present two case studies where 2D seismic reflection data have been used in combination with geological/geophysical data to create and verify 3D interpretations of specific structures targeted for scientific deep drilling and mining. In the first case, a surface geological map and high resolution 2D seismic reflection data were used to create a 3D lithological model of the subsurface structures in an area around a scientific deep drilling site. This model was also compared to results from constrained 3D inverse modeling of gravity data. In the second case, seismic forward ray-trace modeling was used to delineate a massive sulfide ore body by using high resolution 2D seismic reflection data. By comparison of the generated synthetic data with the real data, it was found that the top of the ore body was detected.

KEYWORDS: Reflection seismics, 3D interpretation, inverse gravity modeling, seismic forward modeling

EAN: SGA_2013_A010
10,-
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