Print Email Facebook Twitter Transmission compensated primary reflection retrieval in the data domain and consequences for imaging Title Transmission compensated primary reflection retrieval in the data domain and consequences for imaging Author Zhang, L. (TU Delft Applied Geophysics and Petrophysics) Thorbecke, J.W. (TU Delft Applied Geophysics and Petrophysics) Wapenaar, C.P.A. (TU Delft ImPhys/Acoustical Wavefield Imaging; TU Delft Applied Geophysics and Petrophysics) Slob, E.C. (TU Delft Applied Geophysics and Petrophysics) Date 2019 Abstract We have developed a scheme that retrieves primary reflections in the two-way traveltime domain by filtering the data. The data have their own filter that removes internal multiple reflections, whereas the amplitudes of the retrieved primary reflections are compensated for two-way transmission losses. Application of the filter does not require any model information. It consists of convolutions and correlations of the data with itself. A truncation in the time domain is applied after each convolution or correlation. The retrieved data set can be used as the input to construct a better velocity model than the one that would be obtained by working directly with the original data and to construct an enhanced subsurface image. Two 2D numerical examples indicate the effectiveness of the method. We have studied bandwidth limitations by analyzing the effects of a thin layer. The presence of refracted and scattered waves is a known limitation of the method, and we studied it as well. Our analysis indicates that a thin layer is treated as a more complicated reflector, and internal multiple reflections related to the thin layer are properly removed. We found that the presence of refracted and scattered waves generates artifacts in the retrieved data. Subject acousticinternal multiples To reference this document use: http://resolver.tudelft.nl/uuid:85aa81cb-4cf0-48c7-a9fc-95f6cef248bf DOI https://doi.org/10.1190/geo2018-0340.1 Embargo date 2019-10-26 ISSN 0016-8033 Source Geophysics, 84 (4), Q27-Q36 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2019 L. Zhang, J.W. Thorbecke, C.P.A. Wapenaar, E.C. Slob Files PDF geo2018_0340.1.pdf 2.31 MB Close viewer /islandora/object/uuid:85aa81cb-4cf0-48c7-a9fc-95f6cef248bf/datastream/OBJ/view