A group led by Petrobras has demonstrated good quality reservoirs at a well drilled to probe the westerly extent of the Iara presalt accumulation in the Santos basin offshore Brazil.
The BRSA-1032-RJS well, informally known as Iara West, is in 2,150 m of water on the BM-S-11 concession 223 km off Rio de Janeiro and 9 km from the Iara discovery well. It encountered 21-26° gravity oil in presalt carbonates at 5,430 m.
The well went to 6,050 m and is the third well drilled in the Iara area. It is part of the fast-track program to develop the world-class pre-salt Santos Basin discoveries.
Petrobras operates the BM-S-11 block with 65% interest, BG Group has 25%, and Petrogal Brasil/Galp Energia has 10%.
The group will continue to appraise the area, including formation tests to evaluate reservoir production, in line with the plan approved by Brazil’s National Agency of Petroleum, Natural Gas and Biofuels.