Sergipe-Alagoas Basin

44,000 km²


up to 4,000 meters



high potential recoverable volume, logistical facilities, 4 thousand km² of 3D seismic, medium to low risk prospects. Expectation of light oil, 30-40˚API.

The Sergipe-Alagoas Basin is located on the continental margin of Northeast Brazil, covering parts of the states of Sergipe, Alagoas, and a small portion of the state of Pernambuco. It has a total area of approximately 44,000 km², of which nearly 32,000 km² are located offshore in water depths up to 3,000 m, and 12,000 km² are located on land. It is bordered to the north by the Pernambuco-Paraíba Basin and to the south by the Jacuípe Basin.


Exploration activities in the Sergipe-Alagoas Basin began in 1935. The first drilling operations took place in the North of Alagoas, and the first discovery of commercial oil was in 1957. The Carmópolis Field was discovered in 1963 in the land portion of the Sergipe sub-basin, considered the first gigantic field in Brazil. The basin is also a pioneer in maritime field discoveries. Brazil’s first offshore field, Guaricema, was discovered in the late 1960s.


Exploration of new frontiers began in 2007, starting production of deepwater light oil. The basin occupies an increasingly prominent position due to its geological success with ultra-deepwater discoveries.


We own interest in the SEAL-M-351, SEAL-M-428, SEAL-M-430, SEAL-M-501, SEAL-M-503, SEAL-M-505, SEAL-M-573, SEAL-M-575 and SEAL-M-637 blocks. Exxon Mobil and Murphy Oil are our partners in all of the blocks.


In 2018, we acquired 3D seismic data. With the exception of SEAL-M-573, which is approximately 50% covered by 3D seismic data, and SEAL-M-673, the seismic survey covers the entire area of all other blocks. The data is currently being processed, and conclusion is expected for the end of 2019. A new seismic acquisition is scheduled for early 2020, which will cover the remaining 50% of the SEAL-M-573 block and the entire SEAL-M-637 block.



Location: Continental margin of the Northeast, bordered to the north by the Pernambuco-Paraíba Basin and to the south by the Jacuípe Basin.
Area: 44 km²
Water depth: up to 4,000 m
Characteristics: High recoverable potential volume;
Logistics facilities;
4,000 km² of 3D seismic data;
Medium to low-risk prospective resources;
Long-duration test at Farfan by Petrobras in 2018;
Light oil expectation, 30-40º API.