South America’s offshore boom accelerates in Guyana and Brazil
South America's upstream sector of the past conjures images of the onshore heavy oil fields of Colombia and Venezuela. But in recent years, regional activity has pivoted offshore, where repeated success in Guyana and world-class productivity in Brazil have elevated offshore South America to its status as a top investment destination.
Since 2015, Brazil and Guyana have dominated the newsflow from the region. Brazil led with a series of successful licensing rounds after adjusting its local content policies and other regulatory improvements. Guyana followed with more than 4 billion boe of resource discovered to date in the Stabroek block. The revitalisation of mature fields in Brazil's Campos basin offers even greater upside.
How Guyanna discoveries are changing the game
The discoveries are a game changer for all partners. ExxonMobil has in the Liza Complex one of its five key growth pillars and the project helps to address the Major's relative lack of deepwater exposure. For Hess, Guyana growth will supplement its key Bakken position. At peak output in 2026, the project accounts for 30% of total company production. CNOOC is the leading Chinese NOC exploring offshore Latin America, with exposure to Mexico, Guyana, Argentina and Brazil. On its international portfolio, Guyana is the NOC's second largest country in terms of value and reserves.
Liza's potential could extend across the Equatorial Margin, which accounts for almost 25% of Latin America's offshore licensed acreage. A full range of companies is present. All the Majors (except for Eni), large independents, prominent explorers and Asian NOCs have interests in the region. With 80% exploration success rate, the Liza complex still has 20 targets to chase. The Equatorial Margin extends to Suriname, French Guyana and Northeast Brazil, where geological similarities are expected.
Check our insight Guyana – the richest corner of South America? for more information.
Too soon to write off the Campos basin?
Petrobras' investment focus has shifted to the more prolific Santos basin over the past decade, at the expense of the ageing Campos basin. Without further investment, 32 platforms will reach their economic cut-off by 2025. The decommissioning of the 32 platforms and their related infrastructure will cost US$8 billion. However, the same sum could be invested towards the redevelopment of these mature fields. We estimate redevelopment could add 230,000 boe/d by 2025 and postpone 60% of the decommissioning costs to post-2030.
Some redevelopment activities are already underway. They include 4D seismic surveying to identify bypassed oil pockets, infill drilling, water flooding optimization and increasing platforms water handling capacity. Moreover, future use of EOR techniques presents additional upside to production.
Petrobras and Equinor are partnering in the Roncador oil field in the Campos basin to use infill drilling and 4D seismic surveying to extend the life of the field. According to Wood Mackenzie's analysis, the successful deployment of these technologies will extend the economic life of the field by eight years and add 500 million barrels of oil equivalent to the field's reserves – increasing the NPV10 by US$1.6 billion.
Purchase our report Brazil's mature Campos basin oil fields: decommission or redevelop? to learn more about the impact on Brazil's production, royalty collection and job generation, in addition to other ongoing redevelopment activities in the Campos basin. Or listen to the podcast below.