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Petrobras confirms presence of light hydrocarbons in ultra-deep waters of the Sergipe-Alagoas Basin
12 October 2012
Petrobras has confirmed the presence of light hydrocarbons in block SEAL-M-426, in ultra-deep waters of Sergipe-Alagoas Basin. (Earlier post.) The discovery took place during drilling of well 1-BRSA-1083-SES (1-SES-167) known as Farfan, at a water depth of 2,720 meters (8,924 feet, or 1.7 miles).
This block is part of concession BM-SEAL-11, where Petrobras is the operator with a 60% stake while partner IBV Brasil has 40%.
The well is 109 km (68 miles) from the municipality of Aracaju, and 21 km (13 miles) southeast of the Barra accumulation, where well 1-BRSA-851-SES (1-SES-158 - Barra) was drilled, which revealed the first significant gas discovery in ultra-deep waters of the Sergipe-Alagoas Basin.
In this same Basin, Petrobras announced on 22 August the completion of the Barra extension well, 3-BRSA-1069-SES (3-SES-165 - Barra 1) which also held oil and is located 10 km (6.2 miles) northwest of the Farfan well.
The discovery of Farfan was confirmed by traces of oil detected during well drilling, electric log analysis and fluid samples collected from cable tests.
A 44-meter hydrocarbon column of which 40 meters are formed by porous sandstones containing light hydrocarbons, was detected at a depth of 5,582 meters (18,313 feet).
Petrobras will proceed with well drilling up to a depth of 6,000 meters (19,685 feet) and will analyze the rocks and fluids obtained from this well with the aim of submitting the Appraisal Plan to the National Petroleum, Natural Gas and Biofuels Agency (ANP).
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