ExxonMobil Expands Angola Deepwater Redevelopment With New Subsea Installation Contract

LUANDA, Angola — Supermajor ExxonMobil has formally signaled the acceleration of its legacy asset maximization strategies in West Africa, awarding a significant offshore engineering mandate to the Subsea Integration Alliance (SIA). The capital commitment targets the Redevelopment 2.0 Likembe Project inside the prolific Block 15 development corridor, showcasing a continuous trend where global operators deploy highly integrated subsea architectures to extract incremental volumes from mature deepwater assets.

The definitive engineering, procurement, construction, and installation (EPCI) framework is officially classified by contractor executives as a "substantial" commercial award, a designation that places the total financial value of the contract between $150 million and $300 million. The operational layout centers on the design and layout of a high-capacity subsea tie-back system, which will structurally link the newly optimized Likembe reservoir infrastructure directly into existing floating production, storage, and offloading (FPSO) units positioned across Block 15. By leveraging pre-existing surface infrastructure, the development model drastically slashes upfront capital expenditures while expediting the timeline to first oil.

Operationally, the execution of the contract relies heavily on a multi-center project delivery framework that combines global engineering expertise with rigorous domestic content requirements. Subsea7 will oversee primary project management and installation engineering workflows, distributing technical tasks across its centralized corporate offices in Paris, Lisbon, and Sutton, alongside its localized operational hub in Luanda to maximize the engagement of Angolan field engineers. Concurrently, as a core component of the alliance’s integrated delivery philosophy, SLB OneSubsea will spearhead the manufacturing of the advanced umbilical infrastructure, routing production through its dedicated Center of Excellence in Moss, Norway, with specialized engineering support out of Houston, Texas.

Olivier Blaringhem, Chief Executive Officer of the Subsea Integration Alliance, noted that the commercial selection validates the commercial efficiency of early contractor involvement models, which allow operators and service firms to co-design subsea field architectures before executing manufacturing phases. By streamlining engineering interfaces and eliminating supply chain overlaps between separate equipment providers and installation contractors, the integrated model minimizes downhole execution risks and provides predictable delivery timelines within highly competitive deepwater maritime environments.

For Angola’s expanding oilfield services sector, the Likembe award delivers a predictable, long-term commercial pipeline while reinforcing the state’s strict local content mandates. David Bertin, Senior Vice President for the Global Projects Centre East at Subsea7, re-emphasized the contractor's explicit commitment to executing the offshore installation phases safely and efficiently while maintaining deep capital investments into local training academies and specialized technical fabrication yards in Luanda. As the Subsea Integration Alliance mobilizes its deepwater construction fleets to begin field layout phases, the Likembe redevelopment highlights a vital regional blueprint for how national oil ministries can successfully cooperate with international majors to squeeze high-margin barrels from established fields, preserving the country's position as a dominant West African energy hub.