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Outside the salt boundaries

Figure [*] displays the multiple attenuation results for the first CMP gather in Figure [*]a. The HRT (Figure [*]b) does a very decent job at short and long offsets. It especially does better than the adaptive subtraction at short offsets (Figure [*]a). The pattern-based methods (Figures [*]c and [*]d) lead to the best multiple attenuation result at short offsets. The missing information after 3.5 s. in Figures [*]c and [*]d comes from the convolution with the PEFs Claerbout and Fomel (2001). Overall, the pattern-based method with 3-D filters gives the best result while preserving the primaries.

 
comp-multatt-cmp.3200
comp-multatt-cmp.3200
Figure 4
Multiple attenuation results for the CMP gather in Figure [*]. (a) Signal estimated after adaptive subtraction. (b) Signal estimated after HRT and mute. (c) Signal estimated with a pattern-based method and 2-D PEFs. (d) Signal estimated with a pattern-based method and 3-D PEFs.
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next up previous print clean
Next: Inside the salt boundaries Up: Multiple attenuation results Previous: Multiple attenuation results
Stanford Exploration Project
7/8/2003