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Abstract

Poor definition of thin beds when approaching the limits of seismic resolution is one problem we are often confronted with when interpreting reflectivity data, particularly when trying to distinguish the stratigraphic relationships between sedimentary packages being imaged. The loss of higher frequencies due to the filtering effect of the earth (attenuation), and the impossibility to fully recover those frequencies during the processing stages severely affect our ability to vertically separate events in our seismic sections as continuous individual reflectors below the tuning frequency. Seismic resolution is paramount for looking at stratigraphic features that indicate internal bedding geometries, pinch outs and reflector terminations all that often fall close to or below the limit of seismic resolution. In this paper we illustrate several techniques such as Frequency Analysis, Wavelet Geometry Analysis and Spectral Enhancement, which help identify thin beds and aid the interpretation of their extents in poorly resolved data.

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/content/papers/10.3997/2214-4609-pdb.264.SBGF_2721
2011-08-15
2024-07-17
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