Английская Википедия:Guarujá Formation

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Шаблон:Short description Шаблон:Infobox rockunit The Guarujá Formation (Шаблон:Lang-pt) is a geological formation of the Santos Basin offshore of the Brazilian states of Rio de Janeiro, São Paulo, Paraná and Santa Catarina. The predominantly calcarenite formation with marls dates to the Early Cretaceous period; Early Albian epoch and has a maximum thickness of Шаблон:Convert. The formation is the second-most important post-salt reservoir rock of the Santos Basin.

Etymology

The formation is named after the city of Guarujá, São Paulo.

Description

The Guarujá Formation is Шаблон:Convert thick,[1] and consists of oolitic calcarenites, which laterally grade to greyish ochre and brownish grey calcilutites and grey marls. These facies are interbedded with the alluvial clastics of the Florianópolis Formation. The Guarujá name is restricted to the lowest limestone intercalation, previously named Lower Guarujá by Ojeda and Ahranha in Pereira and Feijó (1994). The microfacies indicate a tidal flat to shallow lagoon and open carbonate platform depositional environment. The age based on planktonic foraminifera and pollen is Early Albian.[2]

Petroleum geology

The formation is the second-most important post-salt reservoir rock of the Santos Basin,[3] after the Itajaí-Açu Formation.[4][5]

Field Year Operator Reserves (in place, million barrels) Reserves (in place, million m3)
Notes
Cavalo Marinho 2001 Petrobras Шаблон:Convert Шаблон:Center
Caravela 1992 Petrobras Шаблон:Convert Шаблон:Center
Caravela Sul 1991 Petrobras Шаблон:Convert Шаблон:Center
Coral 1990 Petrobras Шаблон:Convert Шаблон:Center
Estrela do Mar 1990 Petrobras Шаблон:Convert Шаблон:Center
Tubarão 1988 Petrobras Шаблон:Convert Шаблон:Center

See also

Шаблон:Portal

Шаблон:Clearboth

References

Шаблон:Reflist

Bibliography

  1. Kiang Chang et al., 2008, p.32
  2. Clemente, 2013, p.22
  3. Contreras, 2011, p.34
  4. Шаблон:Cite web
  5. Vieira, 2007, p.9