Significant Oil Reserves in the Pre-Salt Layer in the Santos Basin
Posted on September 11, 2008 – 10:10 am | by oilandgaspress.com
(Rio de Janeiro, September 10, 2008). – PETRÓLEO BRASILEIRO S/A - PETROBRAS, [Bovespa: PETR3/PETR4, NYSE: PBR/PBRA, Latibex: XPBR/XPBRA, BCBA: APBR/APBRA], a Brazilian international energy company, announces that the consortium established by Petrobras (65% - Operator), BG Group (25%) and Galp Energia (10%) for prospecting the BM-S-11 Block in ultra-deep waters in the Santos Basin, has concluded the drilling of well 1-BRSA618-RJS (1-RJS-656) with the discovery of a significant find of light oil in the pre-salt reservoirs. The estimated recoverable volume is from 3 to 4 billion barrels of light oil and natural gas in the area shown in green on the map.
The Iara light oil discovery was announced on August 7 2008 pending clearer prospects from drilling activities. The relevant data is now available and reveals the thickness of the porous oil-bearing reservoirs to be better than initially forecast. Notified today to the Brazilian industry regulator, ANP, the new find has been verified by cable survey as light oil with a specific gravity of between 26° and 30°API covering an area of approximately 300 km2, clearly demarcated by seismic means. The estimated volume is based on the collated data together with information already available on the pre-salt layer.
The BM-S-11 block consists of two exploratory areas. The first well,1-BRSA-369A-RJS (1-RJS-628A), was drilled in one of these areas, known as Tupi, this discovery announced on July 11 2006 as having an estimated recoverable volume of between 5 and 8 billion barrels of light oil and natural gas. The respective Assessment Plan has since been approved by the ANP and is currently being executed (in gray on the map).
The so-called 1-BRSA-618-RJS (1-RJS-656) discovery well, known as lara, is situated in the northern part of the Tupi field (colored green on the map), about 230 km off the coast from the city of Rio de Janeiro in a water depth of 2,230 metros. The final drilling depth was 6,080 meters.
The Consortium is to continue its exploratory activities and investments in this area through the implementation of the Discovery Assessment Plan to be submitted to the ANP, in accordance with the Concession Agreement, to better establish the dimensions and characteristics of the reserve.
Almir Guilherme Barbassa
Chief Financial and Investor Relations Officer
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Tags: Oil Reserves, pre-salt layer, Santos Basin
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