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Abstract

In the search for new hydrocarbon reservoirs a number of sedimentary basins have so far been underexplored due to exploration challenges, like, e.g., difficult terrains to employ vibrator sources. Instead of conducting an active seismic survey, the first exploration data could be delivered by using natural seismicity and seismic interferometry (SI). For this purpose, arrays with continuously recording receivers would need to be installed in the exploration area. With SI, seismicity due to natural sources in the subsurface can be remapped to receiver positions on the Earth’s surface. The remapped responses can subsequently be used to create a (low-frequency) reflectivity image of the subsurface. Initially, SI was proposed as a crosscorrelation (CC) of responses. Recently, an alternative remapping procedure for passive data was proposed, by performing a multidimensional deconvolution (MDD). We evaluate both methods. We show that with both methods physical events can be retrieved correctly, also when there are moderate losses in the medium. In realistic situations, for both methods, additionally, specific artifacts are created, so-called internal events. We show how these artifacts could be recognized and removed.

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/content/papers/10.3997/2214-4609.20146735
2009-03-22
2020-02-25
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20146735
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