SLB's Capital Discipline Makes It the Best Bet in Energy Services

Understanding the bull case requires understanding what SLB did differently after the 2020 oil price collapse. Management took three decisive actions that restructured the company.

First, they cut headcount by approximately 21,000 employees (roughly 20% of the workforce), permanently reducing the cost base. These were not furloughs; they were structural eliminations of roles that would not return. Second, they exited low-return businesses and geographies, focusing capital on digital services, subsea technology, and production optimisation where margins are structurally higher. Third, they implemented a capital allocation framework that caps capital expenditure at 5-6% of revenue and commits to returning 60-80% of free cash flow to shareholders.

The results speak for themselves. Operating income has grown from $2.8 billion in 2021 to $5.5 billion in 2025, with operating margins expanding from 12% to over 15%. Free cash flow has been remarkably consistent at $4 to $5 billion per year since 2023, even as the oil price has fluctuated between $70 and $95 per barrel.

Historically, energy services companies have treated high oil prices as permission to spend. SLB's refusal to do so during the 2021-2024 upcycle is the most significant behavioural change in the sector since the post-2015 restructuring wave.

The most compelling chart in SLB's financial history is the free cash flow progression. In 2021, the company generated $3.5 billion. By 2025, that figure had grown to $4.8 billion, a 37% increase. But the consistency matters more than the growth. Over the past three years, annual FCF has ranged from $4.5 billion to $4.8 billion, a remarkably tight band for a cyclical business exposed to volatile commodity prices.

This consistency is the direct result of the capital discipline framework. By capping capex at 5-6% of revenue (approximately $2 billion per year), SLB ensures that revenue growth flows through to free cash flow rather than being absorbed by capacity expansion. The contrast with the 2012-2014 period, when capex consumed 10-12% of revenue and FCF was negligible despite record revenues, is stark.

At $78 billion market cap, the trailing FCF yield is 6.2%. Against peers, that is compelling. Halliburton's FCF yield sits around 5%. Baker Hughes is approximately 4.5%. The S&P 500 average is roughly 4%. SLB offers the highest free cash flow yield in large-cap energy services while simultaneously growing revenue faster than peers.

The last time the energy services sector offered FCF yields above 6% with this kind of revenue visibility was in early 2017. Companies that bought at those yields saw 40-60% total returns over the subsequent two years.

SLB's strategic pivot toward digital services and subsea technology is where the long-term margin expansion story lives. The digital segment, which provides AI-driven reservoir modelling, drilling optimisation, and production analytics, generates margins estimated at 25-30%, roughly double the group average. As this segment scales from approximately 15% of revenue today toward 25% by 2028, blended group margins should expand by 200-300 basis points.

The subsea business, bolstered by the OneSubsea joint venture with Aker Solutions and Subsea7, addresses the fastest-growing segment of offshore energy investment. Deepwater projects have the highest breakeven costs but also the longest production profiles, making them ideal for SLB's technology-intensive service model. Order visibility in subsea extends 3-5 years, providing revenue certainty that short-cycle shale services cannot match.

The 2025 revenue dip from $36.3 billion to $35.7 billion reflects softness in North American short-cycle activity, not a structural issue. International and offshore revenue continued growing. The mix shift toward higher-margin, longer-cycle revenue is precisely the transformation that supports a premium to historical multiples.