SLB is the company that oil and gas producers call when they need to find, drill, or get more out of a well. It sends engineers and specialized equipment to job sites in more than 100 countries, charging customers each time it performs a service or delivers a product. Its four main divisions cover the full journey of a well: Digital (software and data tools), Reservoir Performance (measuring and stimulating what is underground), Well Construction (drilling the hole), and Production Systems (getting the oil and gas to the surface and into pipelines). On top of that, SLB is building newer businesses in data center hardware, carbon capture, and geothermal energy. The diagram below traces where the money goes.
Five years of financial data tell a clear story of growth followed by a speed bump. Revenue climbed from $22.9 billion in 2021 to a peak of $36.3 billion in 2024, then slipped to $35.7 billion in 2025. The 2025 dip was real. SLB itself says that lower oil prices and an oversupplied oil market caused customers in Saudi Arabia, Mexico, and offshore Sub-Saharan Africa to pull back on spending. Without the $1.5 billion added by the ChampionX acquisition, revenue would have fallen 6% rather than just 2%.
Gross margins improved steadily from 2021 through 2024, rising from roughly 16% to nearly 21%. That improvement reflected better pricing and a richer mix of higher-value services. Then in 2025, gross margin slipped back to about 18%, nearly erasing four years of progress. That reversal matters because it shows how quickly the financial gains of a good cycle can unwind when customers cut back.
The cash picture is more reassuring than the revenue line. Despite the revenue softness in 2025, SLB generated $6.5 billion in operating cash flow and $4.1 billion in free cash flow, essentially the same as in 2024 and 2023. The company returned $4.0 billion to shareholders in 2025 through dividends and share repurchases, and has committed to returning more than $4.0 billion in 2026.
Net debt tells a more mixed story. It fell from $13.3 billion in 2021 to $9.7 billion in 2025, which looks like progress. But the ChampionX deal added complexity: SLB issued 141 million new shares valued at $4.9 billion to pay for it, which dilutes existing shareholders even though no cash left the door. The company did pay off all $0.6 billion of ChampionX debt it assumed, but total long-term debt still stood at $9.7 billion at the end of 2025.
Beyond the core oil and gas services business, SLB is building two newer revenue streams worth watching. Digital revenue reached $2.7 billion in 2025, up 9% year on year, with a pretax operating margin of 28%. That margin is meaningfully higher than the margins in Well Construction (19%) or Production Systems (16%), which means every dollar of Digital growth is worth more to profits. The second new stream is Data Center Solutions, which makes modular hardware for large computing facilities. That business grew 121% in 2025, though it starts from a small base.
The risks SLB faces are specific and serious. First, about 82% of revenue comes from outside the United States, which means political problems anywhere in the world can hit the business hard. SLB halted shipments to Russia in 2023 due to international sanctions and had $0.7 billion of assets there. Second, Saudi Arabia, Mexico, and parts of Africa all reduced activity in 2025, and together those regions drove most of the revenue decline. Third, SLB's digital tools control oil and gas operations remotely, which means a successful cyberattack could disrupt real-world energy production. The company has acknowledged that its security systems might not stop advanced attacks.
Climate regulation adds a fourth layer of risk. Governments worldwide are passing laws to cut emissions, and those laws could reduce oil and gas activity over time. SLB is responding by building carbon capture, geothermal, and low-carbon hydrogen businesses. But those new businesses are small today and have not yet proven they can generate the scale of revenue that the core oil and gas services business produces. A fifth risk is integration. The ChampionX acquisition must be successfully combined into SLB's operations to deliver the benefits promised. A failed or slow integration would mean the cost of the deal, which includes permanent dilution from 141 million new shares, was not matched by the gains.