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Image courtesy of Petrobras.

The Petrobras led Libra consortium discovered a second oil pay zone at the C1 extension well in the offshore Brazil Libra block.

C1, also known as well 3-RJS-735/735A, is located in the central part of the Libra block in the Santos Basin, about 136 miles off the coast of Rio de Janeiro.

The drilling results confirmed the presence of a hydrocarbon column about 656 feet deep in reservoirs with “good permeability and porosity characteristics,” Brazil’s Petrobras said.

The well reached a final depth of 18,963 feet, including a water depth of 7,086 feet.

The hydrocarbon and CO2 bearing intervals were calculated through electrical profiles and fluid samples that are being characterized through laboratory analysis.

A resource size estimate has not been disclosed yet.

C1 is the second well successfully drilled by the Libra consortium and was completed about 11 miles from the first well.

The consortium will continue with its exploration plan by drilling new wells in order to evaluate the Libra area.

The Libra consortium is composed of Petrobras with a 40 percent operating stake,  Shell with a 20 percent stake, France’s Total with a 20 percent stake, China’s CNPC with a 10 percent stake and CNOOC with a 10 percent stake.

Brazil’s state-owned Pré-Sal Petróleo is the contract manager for the consortium.