Global Deepwater Spending Hits 5-Year High in 2026 as Operators Sanction Tieback Projects and Fast-Track Gulf of Mexico Developments

The offshore oil and gas industry is experiencing its strongest investment cycle since the 2012 to 2014 era, with global deepwater capital spending projected to reach approximately $105 billion in 2026 according to estimates from Rystad Energy — a 14 percent increase from 2025 and the highest level in a decade. The catalyst is a confluence of factors: sustained oil prices above $80 per barrel, a depletion-driven need to replace reserves, and a generation of tieback projects that can be executed at breakeven costs below $40 per barrel.

Gulf of Mexico: The Tieback Opportunity

The U.S. Gulf of Mexico remains the world's most active deepwater basin by new project sanctions in 2025 and early 2026. The key dynamic is the maturation of the tieback model: rather than developing isolated new fields with standalone FPSO or TLP facilities, operators are connecting smaller nearby discoveries to existing production infrastructure, dramatically reducing capital requirements and time to first oil.

Shell's Sparta project in the Mississippi Canyon protraction area, sanctioned in late 2024, is a textbook tieback — a five-well subsea development that will flow production through the existing Ursa tension-leg platform. First oil is expected in 2027. BP's Kaskida development, a larger standalone project in the Keathley Canyon area with an estimated resource of approximately 275 million barrels, received FID in 2024 and is targeting production in the late 2020s.

The Bureau of Ocean Energy Management (BOEM) data shows that the U.S. Gulf of Mexico produced approximately 1.87 million barrels per day of crude oil in early 2026, with deepwater (water depths greater than 1,000 feet) accounting for over 90 percent of total production. The basin is expected to continue growing toward 2 million barrels per day by 2028, driven by a pipeline of sanctioned developments.

Brazil's Presalt: Petrobras Targets Record Output

Brazil's offshore presalt plays, located beneath an extensive salt layer 5 to 7 kilometres below the ocean floor in the Santos and Campos basins, continue to set production records. Petrobras, the state oil company, produced approximately 2.1 million barrels per day of domestic oil and natural gas liquids in Q4 2025, with presalt representing 78 percent of that total.

The company's 2026 strategic plan targets average production of 2.2 million barrels per day, supported by the continued deployment of new FPSO units on the Buzios mega-field and the ramp-up of production at the Sepia and Atapu transfer-of-rights fields. Buzios alone is ultimately expected to produce over 2 million barrels per day from multiple FPSOs when fully developed, making it one of the most productive deepwater fields ever discovered.

TotalEnergies and BP hold minority stakes in several Brazilian presalt blocks alongside Petrobras, giving them exposure to some of the world's lowest-cost deepwater barrels, with lifting costs reportedly below $7 per barrel at mature producing fields.

Norwegian North Sea: Redevelopment Cycle

Norway's offshore sector has entered a capital-intensive redevelopment phase, with Equinor and its partners investing heavily to extend the productive lives of mature fields while progressing new developments in frontier areas. The Johan Castberg field in the Barents Sea, where Phase 1 production began in late 2024, is among the most northerly oil developments ever undertaken. Phase 2 is already under evaluation, as described in a recent Oil Authority analysis.

The Norwegian Offshore Directorate (NOD) reported that Norway produced an average of 1.92 million barrels per day of crude oil and condensate in 2025, roughly flat with the prior year. The directorate's long-range forecast projects Norwegian production increasing to approximately 2.1 million barrels per day by 2029 as new fields ramp up, before beginning a structural decline in the early 2030s.

The Norwegian government's petroleum tax system, which provides a temporary 78 percent refund on qualifying investment costs, has effectively insulated Norwegian offshore activity from commodity price cycles. The result is one of the most resilient offshore investment environments in the world, with rig utilization rates for floating units remaining above 90 percent through the entirety of the 2020s downturn.

Angola and West Africa: Azule Energy's Expansion

West Africa remains a significant growth region for deepwater production. As reported in our recent coverage of the Quiluma offshore gas field first production, Angola's offshore sector is expanding both its oil and natural gas output. Azule Energy, the joint venture between BP and Eni, is among the most active operators in the region, with several development phases advancing simultaneously across multiple blocks.

Angola's oil production is expected to stabilize near 1.1 million barrels per day in 2026 as mature field declines are offset by new deepwater developments. The country's new LNG capacity is opening incremental revenue streams from associated gas that was previously flared or re-injected.

Breakeven Economics Driving Sanction Activity

The fundamental reason deepwater spending is accelerating is economic: the generation of deepwater projects currently being sanctioned has markedly lower breakeven costs than those approved in the 2010s. Improved subsea engineering, standardized well designs, and efficient tieback architectures have driven breakeven costs for many new deepwater projects below $40 per barrel — well within the margin of safety at current oil prices.

Wood Mackenzie estimated in a recent sector review that approximately 65 percent of the deepwater projects under active evaluation globally can generate a 15 percent rate of return at oil prices of $60 per barrel or below. With prices near $100 per barrel, the list of economically viable developments is expanding rapidly, and operators with acreage in the right basins are moving to sanction projects before cost inflation absorbs the price windfall.