Fault-related fracture modeling in a pre-salt lacustrine carbonate reservoir from Santos Basin, offshore Brazil: Predicting preferential fluid flow paths using 3D geological and flow simulation models

Tanaka, Ana Paula Burgoa; Borges, João Paulo Gomes; Araujo, Gabriel M.; Campos, Maria Taryn Relvas; Cunha, Bruno Miranda; Souza, Rogério Brandi de; Caldeira, Jefter Natan de Moraes; Oliveira, Tatiana; Marçon, Diogo Reato; Lima, Ana Paula Martins

doi:10.1016/j.marpetgeo.2021.105392

Cited by 4 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low amplitudes identified on the amplitude-based attributes (Fig. 9) are believed to be associated with karstification, especially with the occurrence of bright spots and pearl structures (Ahlborn et al 2014, Sun et al 2016 or bead-like reflections (Sun et al 2013, Basso et al 2018.…”

Section: Discussionmentioning

confidence: 99%

“…Semblance and variance attributes have been used to delineate drainage patterns associated with paleokarst highlighted in regions of chaotic seismic expressions (Vahrenkamp et al 2004, Chung et al 2011, as well as subtle sinkhole features in the limestones in South Oklahoma (Aboaba and Liner 2020). Other methods include the use of structural filtering (Russel-Houston and Gray 2014), curvature and dip-related attributes (Sullivan et al 2006, Qi et al 2014, acoustic impedance inversion (Vahrenkamp et al 2004), spectral decomposition (Ahlborn et al 2014, Qi et al 2014, and rock physics models (Sun et al 2016).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Paleokarst features in the Aptian carbonates of the Barra Velha Formation, Santos Basin, Brazil

Nworie,

Chinelatto,

Vidal

2023

Braz. J. Geol.

View full text Add to dashboard Cite

Seismic data, borehole image logs, and conventional well logs were used to investigate the distribution and characteristics of paleokarst features in the Aptian carbonates of the Barra Velha Formation in a pilot area of the Santos Basin, Brazil. Multiple seismic attributes were used to enhance details on the seismic data and highlight key seismic parameters including strata deformation and geometry, continuity of seismic events, and fault patterns. The study found that karst structures are controlled by faults and fractures along structural highs, which served as a conduit for the flow of dynamic fluids that dissolved the carbonate materials. Several closed, circular depressions and bright spots identified in the northeastern portion of the study area represent possible sinkhole structures. Epigenic and hypogenic processes due to the action of meteoric water, hydrothermal activity, and intra-formation acidity along regional unconformities in the Barremian-Aptian may have been responsible for the dissolution. Limitations of this study are related to the difficulty of integrating multiple datasets with various scales. However, the higher confidence for the occurrence of the karst features is provided by borehole images at the sub-seismic scale. The findings of this study hold significant relevance for the strategic planning of energy development and carbon sequestration initiatives in the Brazilian continental margins, thereby aiding in informed decision-making.

show abstract