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 - 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 -