Tupi Northeast presalt oil discovery reconfirmed

The second well drilled to confirm the Tupi Northeast presalt oil discovery in the Santos basin offshore Brazil has identified an oil column more than 290 m thick in carbonate reservoirs, said Petroleo Brasileiro SA.

Alan Petzet

March 9, 2012

Wireline samples detected 26° gravity oil at 4,960 m at the 1-BRSA-976-RJS (1-RJS-691) well in 2,131 m of water northeast of Lula field and 255 km off the city of Rio de Janeiro. The first confirmation well was 3-BRSA-944-RJS (3-RJS-688A) in the Franco area.

The well is being cased across the carbonate reservoirs, after which drilling will continue in order to fully penetrate the reservoirs and locate an oil-water contact, Petrobras said. Then formation tests will be performed.

About the Author

Alan Petzet

Chief Editor Exploration

Alan Petzet is Chief Editor-Exploration of Oil & Gas Journal in Houston. He is editor of the Weekly E&D Newsletter, emailed to OGJ subscribers, and a regular contributor to the OGJ Online subscriber website.

Petzet joined OGJ in 1981 after 13 years in the Tulsa World business-oil department. He was named OGJ Exploration Editor in 1990. A native of Tulsa, he has a BA in journalism from the University of Tulsa.