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Petrobras announces new ultra deepwater discovery; fourth important hydrocarbon discovery in the basin this year
6 December 2012
Brazil’s Petrobras announced the discovery of a new light hydrocarbon accumulation in ultra deepwaters of the Sergipe-Alagoas Basin, in the concession area BM-SEAL-10, block SEAL-M-424. The discovery took place during drilling of well 1-BRSA-1108-SES (1-SES-172). The well is 85 km (53 miles) off the Aracaju coast, state of Sergipe, at a 2,583 meter (8,474 feet) water depth.
Drilling was completed at 5,347 meter (17,542 feet) depth. This is Petrobras’s fourth important hydrocarbon discovery in the ultra deepwaters of the Sergipe-Alagoas Basin this year. From August to October this year, Petrobras had announced the presence of hydrocarbon accumulations in wells 1-SES-168 (Moita Bonita), 3-SES-165 (Barra) and 1-SES-167 (Farfan).
The discovery of well 1-SES-172, known as Muriú, occurred in the reservoirs of the Calumbi formation. The discovery was confirmed through log data analysis. Pressure data analysis and fluid sampling from the reservoirs indicated the presence of light oil. The oil was found in excellent quality reservoirs with a 67 meter thickness. Petrobras is the only operator of the SEAL-M-424 concession.
Petrobras will proceed with logging operations (records of features of a formation) and to gather rock and fluid data from this well, with the aim of preparing the assessment strategy of the new discovery, as well as to characterize the conditions of the reservoirs found. The next step will be to submit the Discovery Assessment Plan to the National Petroleum Agency (ANP).
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