Petrobras Field Passes Four Billion Barrels As Pre-Salt Turns Twenty
Petrobras has recorded a milestone at its Tupi field in the Santos Basin, which has passed four billion barrels of oil equivalent in cumulative production, the first asset in the company's 73-year history to reach that figure. The milestone coincides with the twentieth anniversary of Brazil's pre-salt discoveries, the ultra-deepwater play beneath a thick layer of salt that has reshaped the country's position in global oil supply.
Tupi entered commercial production in 2010 and required a new exploration model and purpose-built technology to operate at those depths. Drilling through kilometres of water, sediment and salt to reach reservoirs that hold under high pressure was not a routine engineering problem, and the field became a reference point for ultra-deepwater development worldwide, including for the relatively low carbon intensity of its output compared with heavier crude sources.
The field's production has averaged above a million barrels a day, a level it first reached in 2019. It is operated by Petrobras with Shell and Petrogal Brasil as partners, alongside the state's own representative company, an ownership structure that reflects the production-sharing arrangements Brazil adopted for the pre-salt after the scale of the discoveries became clear.
The pre-salt is now the company's dominant production source. Under the current five-year business plan the area could account for up to 82 per cent of total output, and 28 of the company's 57 operated production assets sit exclusively in the pre-salt layer. Cumulative production across the whole play passed seven billion barrels at the start of last year. Total oil and gas output through the end of the decade is projected between 3.1 and 3.4 million barrels of oil equivalent per day.
The exploration director framed Tupi as having opened a new era for the industry, pointing to the combination the pre-salt has delivered: large reserves, high well productivity, crude with a smaller carbon footprint and above-average recovery efficiency, with the super-giant Búzios and Mero fields alongside Tupi in the same play. The company is meanwhile extending its exploration beyond Brazil, including a recent gas discovery off the Colombian coast, as it works to replace reserves that two decades of pre-salt production have steadily drawn down.
