Direct Answer
Schlumberger reports revenue across 5 business segments in its fiscal 2025 Form 10-K. Production Systems is the largest, with $13.3 billion of revenue (37% of the total), followed by Well Construction at $11.9 billion (33%).
How Does Schlumberger Make Money?
No single line supplies a majority of revenue: the largest, Production Systems, is 37%, which spreads Schlumberger's exposure across several demand drivers. Between fiscal 2024 and 2025, Production Systems grew fastest (+11.6%) and Well Construction slowest (-11.2%), so the revenue mix tilts toward Production Systems while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Production Systems | $13.3 billion | $11.9 billion | 37.3% | 11.6% |
| Well Construction | $11.9 billion | $13.4 billion | 33.2% | -11.2% |
| Reservoir Performance | $6.8 billion | $7.2 billion | 19.1% | -5.0% |
| Digital Integration | $2.7 billion | $2.4 billion | 7.4% | 9.1% |
| All Other | $2.0 billion | $2.1 billion | 5.6% | -6.1% |
What Does Schlumberger Sell?
Schlumberger also breaks revenue down by product and service line, which shows what customers pay for rather than how management organizes the business.
| Product or service | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Service | $21.2 billion | $23.3 billion | 59.4% | -9.0% |
| Product | $14.5 billion | $13.0 billion | 40.6% | 11.7% |
What the Segment Figures Do Not Show
The rows above add up to 103% of Schlumberger's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value Schlumberger reported in the segment note and revenue disclosures of its Form 10-K filed January 23, 2026 (accession 0001193125-26-021017), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are Schlumberger's business segments?
In its fiscal 2025 Form 10-K, Schlumberger reports revenue for Production Systems, Well Construction, Reservoir Performance, Digital Integration and All Other.
Which part of Schlumberger brings in the most revenue?
Production Systems, with $13.3 billion of revenue in fiscal 2025, or 37% of the total.
Where does Schlumberger report its segment results?
In the segment note to the financial statements in its Form 10-K, most recently filed January 23, 2026, alongside management's discussion of each segment's results.