Subsea Integration Alliance (SIA) has secured an engineering, procurement, construction, and installation (EPCI) contract from ExxonMobil for the Redevelopment 2.0 Likembe Project, located in Angolan Block 15 deepwater acreage. The award marks a significant step forward in ExxonMobil's strategy to extend production life from one of Angola's most prolific offshore blocks, which has been producing since the early 2000s and remains a cornerstone of the country's hydrocarbon output.
Block 15 sits in water depths broadly ranging from 400 to over 1,500 metres off Angola's northern coastline, placing the Likembe redevelopment firmly in deepwater territory and demanding high-specification subsea engineering, installation vessels, and project management capabilities. SIA — a partnership between Subsea 7 and OneSubsea, the subsea technologies business of SLB — brings integrated EPCI competency across flowlines, umbilicals, risers, and associated structures, which is consistent with the complex tie-back architectures typical of mature deepwater redevelopment campaigns.
The Redevelopment 2.0 designation signals that ExxonMobil is pursuing incremental recovery from existing reservoir infrastructure rather than a greenfield development, a financially disciplined approach increasingly favoured by international oil companies managing capital allocation across global portfolios. This strategy typically involves new subsea tiebacks to existing floating production systems, optimised well completions, and upgraded subsea processing — all of which carry substantial contracting and supply-chain implications for service providers active in Angolan waters. ExxonMobil operates Block 15 alongside partners including Angola's national oil company Sonangol, and the project aligns with Angola's broader ambition to sustain and grow offshore production volumes above one million barrels per day.
Angola continues to represent one of Sub-Saharan Africa's most technically demanding and commercially active deepwater environments. The government in Luanda has maintained a supportive regulatory posture toward offshore investment, offering fiscal incentives and streamlined licensing processes designed to attract incremental capital into mature fields. For international service companies, Angola's established deepwater infrastructure, skilled local contractor base, and proximity to West African regional logistics hubs make it an operationally accessible market — even as local content requirements under Decreto Legislativo Presidencial No. 3/12 continue to shape contracting strategies.
