SLB Buys Kelvion for $4.1B, Betting Cooling Gates AI Data Centers

SLB, the Houston-based energy technology company formerly known as Schlumberger, has agreed to acquire Kelvion, a global maker of industrial heat exchangers, from Apollo-managed funds and a minority stake held by Triton-advised funds. Terms filed with the SEC put the deal at roughly $3.4 billion in cash plus assumption of about $0.7 billion in debt, a total transaction value of approximately $4.1 billion. The company expects the deal to close in the first half of 2027.

Why it matters

An oilfield-services giant buying a century-old heat-exchanger manufacturer is itself a signal: cooling hardware has become a strategic bottleneck for AI data center buildout, not a subcontracted commodity. SLB CEO Olivier Le Peuch said in the release that “AI is driving the most significant infrastructure investment cycle in our lifetime,” and framed Kelvion as a way to fold thermal management directly into SLB’s modular data center construction business rather than sourcing it out. For developers, that consolidation matters because rack densities have outrun the cooling supply chain’s capacity to keep pace, and vendors big enough to guarantee delivery timelines are becoming a de facto gate on how fast a site can be energized and built out, alongside power and land.

The numbers

Kelvion is expected to generate $2.3 billion to $2.4 billion in 2026 revenue, with data centers, its largest and fastest-growing segment, contributing $1.2 billion to $1.3 billion of that. SLB’s own data center solutions business has grown at a compound annual rate exceeding 90 percent between 2024 and 2026, with cumulative delivered capacity set to top 2 gigawatts by year end. Combined, SLB and Kelvion are targeting $4.5 billion to $5 billion in data center revenue by 2028, up from a pro forma $2 billion-plus in 2026, with $120 million in annual synergies expected within three years.

What’s next

The deal still needs regulatory clearance, with closing targeted for the first half of 2027, leaving a roughly nine-month window before SLB and Kelvion can begin operating as one thermal-and-modular platform. Until then, developers evaluating data center site selection have another variable to track alongside power and interconnection queues: which cooling suppliers are consolidating, and whether that concentration speeds up delivery or adds a new chokepoint of its own.