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Technical Content

Technical Abstract
SEG - Society of Exploration Geophysicists | Roberto Pereira, Ivan Coulamy, Adriano Martinez (CGG) ; Werter Oliveira, Eduardo Naomitsu (PETROBRAS) @2021 Society of Exploration Geophysicists | November

Compared with towed-streamer acquisitions, ocean bottom nodes (OBN) generally provide fuller-azimuth illumination of the subsurface, longer offsets, higher signal-to-noise ratio (S/N), and improved low frequencies. These advantages provide the necessary ingredients for two key elements of seismic exploration and monitoring: (i) full-waveform inversion (FWI) ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Zhiguang Xue, Zhigang Zhang, Ping Wang (CGG) ; Jun Cai (BHP) @2021 Society of Exploration Geophysicists | November

Seismic time-lapse (4D) surveys have been widely used to quantitatively monitor the geophysical property changes within hydrocarbon reservoirs due to production effects. Full-waveform inversion (FWI), which has become one of the most reliable tools for velocity model building (VMB), is a natural technology choice ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Brad Wray, Linn Zheng, Fabian Rozario, Xue Zhang, Nicolas Chazalnoel (CGG) ; Cheryl Mifflin (BHP) @2021 Society of Exploration Geophysicists | November

After many years of processing seismic streamer data acquired over the Shenzi field in deep-water Gulf of Mexico (GOM) with the best available technology, the workflows have remained highly interpretive, far from robust, often time-consuming, and ultimately proved inadequate for resolving the complexity of ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Jing Yang, Xin He, Jiawei Mei, Rongxin Huang (CGG) ; Qingsong Li, Kang Fu, Jean-Paul van Gestel (BP) @2021 Society of Exploration Geophysicists | November

Driven by the notion that blending noise may materially increase the background noise level and obscure the interpretation of weak time-lapse (4D) signals related to subtle reservoir changes, the industry has not yet seen any simultaneous-source (sim-source) surveys acquired for reservoir monitoring. Thus, whether ...

Technical Abstract
SEG - Society of Exploration Geophysicists | M. Wang, Y. Xie, Peipei Deng, J.H. Tan, S. Maitra (CGG) ; M. Camm, N.F. S Zainal (KOPC) ; W.H. Tang, M.N. B. M. Isa, AA. B. Muhamad (Petronas) @2021 Society of Exploration Geophysicists | November

Shear wave velocity model building (S-wave VMB) is a critical and difficult processing step for converted wave imaging. Conventional S-wave VMB depends on PP-PS joint interpretation-based image registration and PP-PS joint tomography-based residual moveout flattening which have certain advantages and drawbacks. We introduce PS ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Zhiyuan Wei, Jiawei Mei, Zedong Wu, Zhigang Zhang, Rongxin Huang, Ping Wang @2021 Society of Exploration Geophysicists | November

Although the resolution of a seismic image is ultimately bound by the spatial and temporal sampling of the acquired seismic data, the seismic images obtained through conventional imaging methods normally fall far short of this limit. In addition to attenuation in the Earth, factors ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Yu Pu, Gang Liu, Diancheng Wang, Hui Huang, Ping Wang @2021 Society of Exploration Geophysicists | November

Full-waveform inversion has been established as a standard tool for building high-resolution velocity models. To take full advantage of such models, the migration algorithm must be capable of handling fine-scale geo-bodies and sharp contrasts while affordably producing high-frequency migration stacks and gathers. Even though ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Xiang Li, Keat Huat Teng, Kai Zhao, Shiping Wu (CGG) ; David Dickinson, F. Hasan Sidi (Woodside Energy) @2021 Society of Exploration Geophysicists | November

High-quality depth images typically require accurate high resolution representations of the earth model. Full-waveform inversion (FWI) has recently justified its value throughout the industry in providing high-resolution velocity models. However, obtaining an accurate FWI velocity model using narrow-azimuth streamer data can still be challenging ...

Technical Abstract
SEG - Society of Exploration Geophysicists | Dongren (Alan) Bai, Lin Zheng, Wubing Deng @2021 Society of Exploration Geophysicists | November

Recently, land full-waveform inversion (FWI) has shown great potential in resolving near-surface complexity in the Delaware Basin, providing significant imaging uplift and useful information for shallow hazard identification. However, deep section updates beyond diving wave penetration remain challenging. We present an application of land ...