Volume 28, Issue 1
Making True Amplitude Angle Domain Common Image Gathers Using Invertible Radon Transform

Hongwei Liu & Yi Luo

Commun. Comput. Phys., 28 (2020), pp. 128-140.

Published online: 2020-05

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  • Abstract

Converting subsurface offset domain common image gathers (ODCIGs) to angle domain common image gathers (ADCIGs) through a Radon Transform (RT) in either the spatial or wavenumber domain is efficient and valid except for the distortion of both frequency spectrum and amplitude versus angle (AVA) effect. This paper presents two modifications to the existing method to keep the frequency spectrum of the resultant ADCIGs the same as the input data and to preserve the relative amplitudes. The spectrum invariance is achieved by replacing the conventional RT or slant slack by an invertible RT. Amplitude preservation is obtained by applying an amplitude correction factor in the angle domain. Tests on both synthetic and field datasets validate the accuracy of these modifications.

  • Keywords

True amplitude, ADCIG, reverse time migration, invertible Radon transform.

  • AMS Subject Headings

86-08

  • Copyright

COPYRIGHT: © Global Science Press

  • Email address

Hongwei.Liu@aramco.com (Hongwei Liu)

Yi.Luo@aramco.com (Yi Luo)

  • BibTex
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  • TXT
@Article{CiCP-28-128, author = {Liu , Hongwei and Luo , Yi }, title = {Making True Amplitude Angle Domain Common Image Gathers Using Invertible Radon Transform}, journal = {Communications in Computational Physics}, year = {2020}, volume = {28}, number = {1}, pages = {128--140}, abstract = {

Converting subsurface offset domain common image gathers (ODCIGs) to angle domain common image gathers (ADCIGs) through a Radon Transform (RT) in either the spatial or wavenumber domain is efficient and valid except for the distortion of both frequency spectrum and amplitude versus angle (AVA) effect. This paper presents two modifications to the existing method to keep the frequency spectrum of the resultant ADCIGs the same as the input data and to preserve the relative amplitudes. The spectrum invariance is achieved by replacing the conventional RT or slant slack by an invertible RT. Amplitude preservation is obtained by applying an amplitude correction factor in the angle domain. Tests on both synthetic and field datasets validate the accuracy of these modifications.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2018-0074}, url = {http://global-sci.org/intro/article_detail/cicp/16830.html} }
TY - JOUR T1 - Making True Amplitude Angle Domain Common Image Gathers Using Invertible Radon Transform AU - Liu , Hongwei AU - Luo , Yi JO - Communications in Computational Physics VL - 1 SP - 128 EP - 140 PY - 2020 DA - 2020/05 SN - 28 DO - http://doi.org/10.4208/cicp.OA-2018-0074 UR - https://global-sci.org/intro/article_detail/cicp/16830.html KW - True amplitude, ADCIG, reverse time migration, invertible Radon transform. AB -

Converting subsurface offset domain common image gathers (ODCIGs) to angle domain common image gathers (ADCIGs) through a Radon Transform (RT) in either the spatial or wavenumber domain is efficient and valid except for the distortion of both frequency spectrum and amplitude versus angle (AVA) effect. This paper presents two modifications to the existing method to keep the frequency spectrum of the resultant ADCIGs the same as the input data and to preserve the relative amplitudes. The spectrum invariance is achieved by replacing the conventional RT or slant slack by an invertible RT. Amplitude preservation is obtained by applying an amplitude correction factor in the angle domain. Tests on both synthetic and field datasets validate the accuracy of these modifications.

Hongwei Liu & Yi Luo. (2020). Making True Amplitude Angle Domain Common Image Gathers Using Invertible Radon Transform. Communications in Computational Physics. 28 (1). 128-140. doi:10.4208/cicp.OA-2018-0074
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