Tectono-sedimentary evolution and petroleum systems of the Mundaú subbasin: A new deep-water exploration frontier in equatorial Brazil

Almeida, Narelle Maia de; Alves, Tiago Marcos; Filho, Francisco Nepomuceno; Freire, George Satander Sá; Souza, Ana Clara Braga de; Normando, Márcio Nunes; Oliveira, Karen M. Leopoldino; Barbosa, Thiago H. da Silva

doi:10.1306/07151917381

Cited by 14 publications

(18 citation statements)

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“…In addition, the study area contains gravitational systems in the Drift Supersequence that impose a marked structural zonation in the basin from its proximal to distal parts (Figure 3a,b). As a result; extensional, transitional and contractional zones are identified from the shelf to the abyssal parts of the PAMA Basin (Almeida et al., 2018; Oliveira et al., 2012; Zalán, 2001) (Figure 3a,b).…”

Section: Geological Frameworkmentioning

confidence: 96%

“…The Albian Rift III sequence is formed by siliciclastic deposits typical of delta fans accumulated in a marine environment (Brandão & Feijó, 1994; Soares et al., 2007). Comparisons with the Ceará Basin (Almeida et al., 2018, 2020) indicate this latter Rift III sequence to be a Breakup Sequence sensu Soares et al. (2012) and Alves and Abreu Cunha (2018).…”

Section: Geological Frameworkmentioning

confidence: 98%

“…Interest in the region has increased in the past decade due to the economic potential of deep and ultra‐deep water basins of Equatorial Brazil, which was enhanced by the discovery of large oil fields on the conjugate margins of Ghana and Ivory Coast (Henry et al., 2011). In fact, deep‐water basins in West Africa and Equatorial Brazil have similar structural and sedimentary features (Almeida et al., 2018, 2020; Da Silva & Ribeiro, 2018; Henry et al., 2011; Zalán, 2015). In parallel, recent data in Zalán (2015) and Da Silva and Ribeiro (2018) describe a broad gravitational system in the PAMA and Barreirinhas basins, relating this same system to the deposition of overlying turbidites (e.g.…”

Section: Geological Frameworkmentioning

confidence: 99%

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Depositional and geomorphic patterns of mixed calciclastic‐siliciclastic systems on a deep‐water Equatorial Margin

2021

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Deep-water channel-levee systems develop beyond continental shelves (Lemay et al., 2020), where sediment is transported from shallow waters into deep and ultra-deep water basins; described by Pettingill (2006) as ranging in depth from 500 to 2,000 m, and extending beyond 2,000 m, respectively. Research on siliciclastic depositional systems has been generally the centre of attention in deep-water basins, with studies on calciclastic systems lagging behind the latter (Payros & Pujalte, 2008). Furthermore, when compared to carbonate-platform settings, deep-water

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Section: Geological Frameworkmentioning

confidence: 96%

Section: Geological Frameworkmentioning

confidence: 98%

Section: Geological Frameworkmentioning

confidence: 99%

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Depositional and geomorphic patterns of mixed calciclastic‐siliciclastic systems on a deep‐water Equatorial Margin

2021

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“…Despite recent advances in the definition of the stratigraphic framework of the Ceará Basin via geochemical approaches (e.g., Maia de Almeida 2020a;2020b;Leopoldino Oliveira et al, 2020;Souza et al, 2021), issues related to the paleoenvironmental significance of organic-rich rocks still require further study. Thus, the objective of this paper is to present an integrated study of sequence stratigraphy and organic geochemical characterization of transgressive and regressive cycles that occurred during the Cretaceous of the Ceará Basin.…”

Section: Introductionmentioning

confidence: 99%

Sequence stratigraphy and organic geochemistry: An integrated approach to understand the anoxic events and paleoenvironmental evolution of the Ceará basin, Brazilian Equatorial margin

Souza

Nascimento

Filho

et al. 2021

Marine and Petroleum Geology

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“…(2020) proved that reservoirs in the Pecém well comprise Cretaceous sandstones in a combined trap related to both an erosional unconformity and a normal fault. Leopoldino Oliveira et al (2020) later identified a series of potential stratigraphic and structural traps, and associated petroleum plays, in rift and drift sequences of the Ceará Basin. Guyana, Sur: Suriname, FrG: French Guiana, FdAmaz: Foz do Amazonas, Pa-Ma: Pará-Maranhão, Bar: Barreirinhas, IvC: Ivory Coast, Saltp: Saltpond).…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional (3D) structural model for an oil-producing basin of the Brazilian equatorial margin

Almeida

Alves

Filho

et al. 2020

Marine and Petroleum Geology

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Hydrocarbon discoveries in regions such as the Brazilian Equatorial Margin, Equatorial Africa and French Guiana have recently confirmed their importance as new exploration frontiers. The Mundaú sub-basin, located on the Brazilian Equatorial Margin, is an oil and gas producing region with four producing fields in shallow water: Xaréu, Atum, Espada e Curimã. In order to understand the structural and seismic-stratigraphic frameworks of an oilproducing area of the Brazilian Equatorial Margin, this work addresses the 3D geometry and 2 spatial distribution of main faults in the Curimã and Espada fields. The occurrence of hydrocarbons in the Mundaú sub-basin is compared with fields in other parts of the Brazilian Equatorial Basin, and in Equatorial Africa. Data from wells and a 3D post-stack timemigrated multichannel seismic volume are used to define nine (9) main seismic-stratigraphic units: the syn-rift Mundaú Formation (Units 1, 2, 3 and 4); the transitional Paracuru Formation (Unit 5) and the drift Ubarana (Uruburetama and Itapagé Members, Units 6 and 7), Tibau and Guamaré Formations (Units 8 and 9). The study area is dominated by NW-SE planar normal faults, basinward-dipping, that formed multiple half-grabens and tilted blocks with small anticlines and synclines genetically related to a transtensional system. Three types of plays are recognised in the Mundaú sub-basins: structural, combined (structural-stratigraphic) and stratigraphic (turbiditic). In the eastern part of the region where the basement is shallow, no oil was found. Conversely, oil was discovered in an anticlinal trap formed on a hanging-wall block analogous to fields in Côte D'Ivoire-Ghana transform margin. This work shows that combined traps on footwall blocks are successful plays near the shelf break of the Mundaú sub-basin, in similarity with the Espoir and Baobab fields in Ivory Coast Basin. Furthermore, turbiditic reservoirs in drift units are analogous to the Stabroek block in Guyana and prospects in the Gulf of Guinea. The structural and petroleum-play analyses in this work are therefore crucial to understand the multiple geological processes leading to the trapping of hydrocarbons in the larger Equatorial Atlantic Ocean.

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Tectono-sedimentary evolution and petroleum systems of the Mundaú subbasin: A new deep-water exploration frontier in equatorial Brazil

Cited by 14 publications

References 50 publications

Depositional and geomorphic patterns of mixed calciclastic‐siliciclastic systems on a deep‐water Equatorial Margin

Depositional and geomorphic patterns of mixed calciclastic‐siliciclastic systems on a deep‐water Equatorial Margin

Sequence stratigraphy and organic geochemistry: An integrated approach to understand the anoxic events and paleoenvironmental evolution of the Ceará basin, Brazilian Equatorial margin

A three-dimensional (3D) structural model for an oil-producing basin of the Brazilian equatorial margin

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