Petrobras discovers hydrocarbons in Campos basin presalt offshore Brazil

The discovery well in block CM-477 could lead to further exploration, supported by electrical profiling, gas detection, and fluid sampling results.
April 13, 2026

Petrobras has discovered presence in the Campos basin presalt offshore Brazil during exploration in sector SC-AP4, block CM-477.

Samples taken from the well, 1-BRSA-1404DC-RJS, will be sent for laboratory analysis with the aim of characterizing the conditions of the reservoirs and fluids found to enable continued evaluation of the area's potential, the company said in a release Apr. 13.

The discovery well was drilled 201 km off the coast of the state of Rio de Janeiro in water depth of 2,984 m. The hydrocarbon-bearing interval was confirmed through electrical profiles, gas evidence, and fluid sampling.

Petrobras is the operator of block CM-477 with 70% interest. bp plc holds the remaining 30%.

Sign up for our eNewsletters
Get the latest news and updates