Petroleo Brasileiro SA (Petrobras) will conduct formation tests of reservoirs encountered at the fifth exploratory well in the Iara presalt area of the Santos basin offshore Brazil.
The company drilled the 3-RJS-715D (3-BRSA-1181D-RJS) well, informally known as Iara steep angle, in 2,128 m of water on the BM-S-11 block 225 km off Rio de Janeiro. It drilled the high-angle well in the central area of the concession’s discovery evaluation plan some 4 km north of 1-RJS-656 (1-BRSA-618) discovery well, informally known as Iara.
The wellbore, designed and executed with a subhorizontal geometry, extends to 6,672 m measured depth and penetrated 900 m of carbonate rock below salt. A 310-m hydrocarbon column was identified. Reservoir characteristics are similar to those found in the vertical discovery well that encountered good quality 28° gravity oil.
The group of Petrobras operator with 65% interest, BG E&P Brasil 25%, and Petrogal Brasil 10% will proceed with activities outlined in the discovery evaluation plan approved by Brazil’s National Petroleum, Natural Gas and Biofuels Agency ANP.
