Lapa oil field
| Lapa oil field | |
|---|---|
  | |
| Country |  Brazil |
| Region | Santos Basin |
| Block | BM-S-8, BM-S-9, BM-S-21 |
| Offshore/onshore | Offshore |
| Coordinates | 25°51′S 43°35′W / 25.850°S 43.583°W |
| Operator | Petrobras |
| Partners | BG Group (30%), Repsol-Sinopec (25%) |
| Field history | |
| Discovery | Sep 2007 |
| Start of production | Dec 2016 |
| Production | |
| Estimated oil in place | 459 million barrels (~6.26×107 t) initially reported as "up to 33 BBOE" |
| Producing formations | Guaratiba Group |
The Lapa oil field is a deepwater
billion barrels [5.2 billion cubic metres
]". Later appraisal of the field drastically reduced the reserves to the current estimate of 459 million barrels (73.0 million cubic metres).
The field was taken into production in December 2016 and is operated by Petrobras with BG and Repsol-Sinopec as partners.
History
The field was formerly known as Carioca, named after the demonym for people from Rio de Janeiro, and later renamed to Pão de Açúcar (Sugar Loaf), after the iconic
Bolivar Coastal Field
of the Venezuelan oil belt.
The operator of the field, state oil company Petrobras, refuted this statement as it was "far too early" to know the size of the field while the first appraisal well Sugar Loaf-1 was still drilling. The
oil price plummeted after the announcement of the discovery.[2] The excitement about Carioca has been mentioned as an example of "oil fever" in the exploration of the Brazilian deepwater pre-salt plays.[1]
After appraisal of the field, the reserve estimate was downsized to 459 million bbl (73.0 million m3) and taken into production in December 2016.[3]
Reservoir
The reservoir of the Lapa oil field is the pre-salt
clastic sediments of which the microbialite, stromatolite-like limestone hosts vast amounts of oil. The sediments were deposited in half-grabens in the early stage of the basin evolution, with the Early Cretaceous opening of the South Atlantic caused by the break-up of Gondwana.[4] The carbonate reservoir contains good quality light 26° API oil that was potentially producing at 28 thousand bbl (4.5 thousand m3) per day.[5][6]
See also
- Campos Basin
- Iara oil field
- Iracema oil field
- Sapinhoá oil field
References
- ^ a b All eyes on Brazil
- ^ Ruppert, 2009, p.39
- ^ Lapa Field
- ^ Ribeiro da Silva & Pereira, 2017, p.134
- ^ Ribeiro da Silva & Pereira, 2017, p.135
- ^ Ribeiro da Silva & Pereira, 2017, p.136
Bibliography
- Ribeiro da Silva, Suzana Faria Chula, and Egberto Pereira. 2017. Tectono-stratigraphic evolution of Lapa Field pre-salt section, Santos Basin (SE Brazilian continental margin). Journal of Sedimentary Environments 2. 133–148. Accessed 2017-09-07.
- Ruppert, Michael C. 2009. Confronting Collapse: The Crisis of Energy and Money in a Post Peak Oil World, 1–264. Chelsea Green Publishing. Accessed 2017-09-07.