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Technical Content

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Gordon Poole, John Tickle ©2023 EAGE | December

Short period multiple prediction for land data is challenging due to poor imaging of the shallow multiple generators as well little information about the down-going reflection at the weathering layer. Based on multiple imaging of the shallow section, surface-related wave-equation deconvolution has been used ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Laryssa Oliveira, Uilli Freitas (CGG) ; Rodrigo Penna (Petrobras) ©2023 EAGE | December

In recent years, the Brazilian presalt characterization has been a challenging task, either because of the imaging problems associated with complex salt layer geometry (Penna et al., 2019) or due to large heterogeneity in the presalt carbonates reservoir (Oliveira et al., 2018). Some efforts ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Stefan Calvert ©2023 EAGE | December

The merits of Total and Effective porosity approaches have always been a source of discussion within the Petrophysical community globally. In general, an operating company adopts a single approach (Total or Effective) in their modelling workflows and ignores the alternative method. This is normally ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Wei Zhao, Priyanka Sadhnani, Yu Huang, Sabaresan Mothi ©2023 EAGE | December

In 4D (time-lapse) imaging, the primary objective is to obtain a 4D image that is sufficiently free of noise associated with acquisition and processing in order to understand the changes at the reservoir interval. To obtain accurate 4D products, all seismic processing steps must ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Ojasvi Sancheti, Song Hou ©2023 EAGE | December

Geological bodies like sand injectites are found in numerous geodynamic and geological contexts around the world, and they can manifest as low- or high-amplitude seismic responses with complex structures. In this paper, we demonstrated an amplitude preserving DNN-based workflow for injectite detection using customized ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | James Cooper, Andrew Ratcliffe ©2023 EAGE | December

Seismic wavefields traveling through the subsurface lose energy due to various phenomena, such as geometric divergence and intrinsic attenuation. Imaging algorithms that account for these effects are well established. However, an often overlooked aspect of seismic imaging is transmission loss, which occurs due to ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Jaswinder Mann ©2023 EAGE | December

In this paper, we present the importance of a regional dataset, acquired and processed with the latest seismic imaging technologies to better understand the depositional environments of one of the main hydrocarbon plays in the Northern North Sea – the Upper Jurassic sandstones. Here ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Alessandro Pintus, Hichem Ayadi, Nicolas Salaun ©2023 EAGE | December

Superimposed reservoirs are common in oil and gas production, but they are challenging to monitor with time-lapse seismic imaging. A common seismic attribute used for assessing reservoir evolution during production is the time-shift measurement which is obtained comparing two 3D seismic images. In the ...

Technical Abstract
EAGE - European Association of Geoscientists and Engineers | Jian Cai, Yong Xia Liu, Raphael Tan, Peipei Deng, Min Wang, Yi Xie, Barry Hung (CGG) ; Min Ouyang, Dun Deng (CNOOC) ©2023 EAGE | December

Yinggehai basin is one of the most important basins of the South China Sea for its mega gas reservoirs and exploration potential. Vintage seismic data generally suffers severely from complex structures, including diapir formed by thermal fluids, strong shallow gas fields, and complex faulting ...