首页|Multiple attenuation based on connected-component analysis and high-resolution parabolic Radon transform
Multiple attenuation based on connected-component analysis and high-resolution parabolic Radon transform
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NSTL
Elsevier
Multiple attenuation is an important issue in seismic exploration. The high-resolution parabolic Radon transform (RT) is a widely used multiple attenuation method for the advantages of simple principle and low computational cost. In the Radon domain, however, the curvatures of primaries and multiples are difficult to focus on, sometimes even close to or overlap with each other, which makes their separation faces great difficulties, and ultimately leads to multiple leakages existing in the attenuation results. To eliminate the multiple leakages caused by the high-resolution parabolic RT, we propose a new multiple-attenuation method that combines the highresolution parabolic RT with the connected-component analysis. The high-resolution parabolic RT is used to obtain the estimated multiples in the input data. Based on the estimated multiples, the connected-component analysis can fully use the continuity of multiples in the input data to eliminate the multiple leakages. The industrial model data are validated by both the proposed and the high-resolution parabolic RT methods. Comparing their attenuation results, we conclude that not only does the proposed method achieve better performance even under complex geological structures, it is also suitable for common-midpoint gathers before normal moveout.
Multiple attenuationRadon transformConnected-component analysisREVERSE TIME MIGRATIONPREDICTIVE DECONVOLUTIONSUBTRACTIONSCATTERINGREMOVAL
NSTL
Elsevier
