TY - JOUR
T1 - 3-D acoustic-elastic full-waveform inversion and migration of marine VSP data from Norway
AU - Liu, Zhaolun
AU - Hoffmann, Jürgen
AU - Simons, Frederik J.
AU - Tromp, Jeroen
N1 - Funding Information:
The authors thank DNO for providing financial support and for permission to publish this work. Computational resources were made available through the Princeton Institute for Computational Science and Engineering (PICSciE).
Publisher Copyright:
© 2022 Society of Exploration Geophysicists and the American Association of Petroleum Geologists.
PY - 2022/8/15
Y1 - 2022/8/15
N2 - We demonstrate an application of three-dimensional (3-D) acoustic-elastic coupled Full-Waveform Inversion (FWI) to deviated Rig-source Vertical Seismic Profile (R-VSP) data from the Fenja Field in Norway, to advance our understanding of subsurface structure. We perform 3-D Reverse-Time Migration (RTM) of the data using the inverted wave speed models. The RTM results show that the structures in our 3-D compressional speed (VP) image are a better match with those obtained from surface seismic imaging, compared to the legacy 2-D ray-based migration image. The resolution of our shear wave speed (VS) image is higher than that of the VP image due to the smaller reflection angle of P-to-S converted waves compared to that of P-to-P reflections. Our VS and density (ρ) images yield additional structural information.
AB - We demonstrate an application of three-dimensional (3-D) acoustic-elastic coupled Full-Waveform Inversion (FWI) to deviated Rig-source Vertical Seismic Profile (R-VSP) data from the Fenja Field in Norway, to advance our understanding of subsurface structure. We perform 3-D Reverse-Time Migration (RTM) of the data using the inverted wave speed models. The RTM results show that the structures in our 3-D compressional speed (VP) image are a better match with those obtained from surface seismic imaging, compared to the legacy 2-D ray-based migration image. The resolution of our shear wave speed (VS) image is higher than that of the VP image due to the smaller reflection angle of P-to-S converted waves compared to that of P-to-P reflections. Our VS and density (ρ) images yield additional structural information.
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U2 - 10.1190/image2022-3750936.1
DO - 10.1190/image2022-3750936.1
M3 - Conference article
AN - SCOPUS:85146733454
SN - 1052-3812
VL - 2022-August
SP - 797
EP - 801
JO - SEG Technical Program Expanded Abstracts
JF - SEG Technical Program Expanded Abstracts
T2 - 2nd International Meeting for Applied Geoscience and Energy, IMAGE 2022
Y2 - 28 August 2022 through 1 September 2022
ER -