scholarly journals Attributes: New Views on Seismic Imaging -- Their Use in Exploration and Production: 31st Annual

2011 ◽  
Keyword(s):  
Seismic Imaging ◽  
Exploration And Production

scholarly journals Toward Creating a Subsurface Camera

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 301 ◽  
Author(s):  
Wenzhan Song ◽  
Fangyu Li ◽  
Maria Valero ◽  
Liang Zhao
Keyword(s):  
Homeland Security ◽  
Seismic Imaging ◽  
Interdisciplinary Collaboration ◽  
Basic Mechanism ◽  
3D Image ◽  
Exploration And Production ◽  
Sensor Signals ◽  
Geophysical Waves ◽  
Geophysical Imaging ◽  
First Time

In this article, the framework and architecture of a Subsurface Camera (SAMERA) are envisioned and described for the first time. A SAMERA is a geophysical sensor network that senses and processes geophysical sensor signals and computes a 3D subsurface image in situ in real time. The basic mechanism is geophysical waves propagating/reflected/refracted through subsurface enter a network of geophysical sensors, where a 2D or 3D image is computed and recorded; control software may be connected to this network to allow view of the 2D/3D image and adjustment of settings such as resolution, filter, regularization, and other algorithm parameters. System prototypes based on seismic imaging have been designed. SAMERA technology is envisioned as a game changer to transform many subsurface survey and monitoring applications, including oil/gas exploration and production, subsurface infrastructures and homeland security, wastewater and CO2 sequestration, and earthquake and volcano hazard monitoring. System prototypes for seismic imaging have been built. Creating SAMERA requires interdisciplinary collaboration and the transformation of sensor networks, signal processing, distributed computing, and geophysical imaging.

scholarly journals GEOLOGICAL CHARACTERIZATION OF EVAPORITIC SECTIONS AND ITS IMPACTS ON SEISMIC IMAGES: SANTOS BASIN, OFFSHORE BRAZIL

2019 ◽  
Vol 37 (1) ◽  
pp. 55
Author(s):  
Alexandre Rodrigo Maul ◽  
Marco Antonio Cetale Santos ◽  
Cleverson Guizan Silva ◽  
Josué Sá da Fonseca ◽  
María de Los Ángeles González Farias ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Seismic Imaging ◽  
Low Frequency ◽  
Seismic Inversion ◽  
Velocity Models ◽  
Exploration And Production ◽  
Seismic Characterization ◽  
Well Data ◽  
Seismic Images

ABSTRACT. The pre-salt reservoirs in Santos Basin are known for being overlaid by thick evaporitic layers, which degrade the quality of seismic imaging and, hence, impacts reservoir studies. Better seismic characterization of this section can then improve decision making in E&P (Exploration and Production) projects. Seismic inversion - particularly with adequate low-frequency initial models – is currently the best approach to build good velocity models, leading to increased seismic resolution, more reliable amplitude response, and to attributes that can be quantitatively connected to well data. We discuss here a few considerations about inverting seismic data for the evaporitic section, and address procedures to improve reservoir characterization when using this methodology. The results show that we can obtain more realistic seismic images, better predicting both the reservoir positioning and its amplitude. Keywords: evaporitic section, seismic imaging, seismic inversion, reservoir characterization, seismic resolution.RESUMO. Os reservatórios do pré-sal da Bacia de Santos são conhecidos por estarem abaixo de uma espessa camada de evaporitos, que degradam a qualidade das imagens sísmicas e impactam os estudos de reservatórios. Melhores caracterizações desta seção podem, então, melhorar o processo de tomada de decisão em projetos de E&P (Exploração e Produção). Inversão sísmica – particularmente com modelos de baixa frequência inicial adequados – é correntemente a melhor abordagem para se construir modelos de velocidades, auxiliando no aumento de resolução sísmica, obtendo-se respostas de amplitude mais coerentes, e tendo seus atributos quantitativamente conectados com as informações de dados de poços. Aqui discutiremos algumas considerações sobre inversões sísmicas para seção evaporítica, e indicaremos procedimentos para melhorar a caracterização de reservatórios quando utilizando esta metodologia. Os resultados mostram que podemos obter imagens sísmicas mais realistas, com melhores predições tanto em termos de posicionamento quanto de sua amplitude.Palavras-chave: seção evaporítica, imagem sísmica, inversão sísmica, caracterização de reservatórios, resolução sísmica.

Multi-Azimuth 3D provides robust improvements in Nile Delta seismic imaging

2007 ◽  
Author(s):  
James Keggin ◽  
Walter Rietveld ◽  
Mark Benson ◽  
Ted Manning ◽  
Peter Cook ◽  
...  
Keyword(s):  
Seismic Imaging ◽  
Nile Delta
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