Libra field

Petroleo Brasileiro (Petrobras) has reported that the consortium responsible for the Libra area in Santos Basin’s pre-salt has concluded drilling of 3-BRSA-1310-RJS well in the block’s central portion in offshore Brazil.

The 352,260km² offshore pre-salt Santos Basin is located in the south Atlantic Ocean, 300km south-east of São Paulo, Brazil.

It has several recent significant oil fields, including Tupi, Jupiter, and Libra.

Following completion of drilling, the well discovered hydrocarbons in a low-porosity reservoir and provided vital information for the ongoing appraisal campaign over the area.

According to the company, it is the fourth well drilled in the Libra field.

The consortium comprising Petrobras (operator, with 40%), Shell (20%), Total (20%), CNPC (10%), CNOOC (10%) and PPSA (contract manager), is also drilling at two other locations.

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Coring operations are in progress at the 3-RJS-739A well in the north-west region of the block, which has already detected carbonate reservoirs containing oil.

Drilling has started on well 3-RJS-741 located in the north.

Acquired in October 2013, the Libra block is currently in the exploratory phase.

In order to conduct extended well tests, the consortium has already contracted a floating production, storage and offloading vessel (FPSO), which has a capacity of 50kbbl/d oil and four million cubic metres of gas a day.

For the Libra pilot project, the consortium is also bidding for another FPSO with capacity of 180kbbl/d oil and 12 million cubic metres a day of gas.

Image: The Libra area is in the pre-salt of Santos Basin. Photo: courtesy of Petrobras.