Olivier Le Peuch
Chief Executive Officer at Schlumberger
Thank you, James. Ladies and gentlemen, thank you for joining us on the call today. In my prepared remarks, I will cover three topics. I will first review a few of our financial highlights from the quarter. Next, I will discuss the positive momentum we are seeing in the international and offshore markets. And third, I will share the exciting progress we are making in digital, before concluding with our outlook for the third quarter and the full year. Stephane will then provide more details on our financial results, and we will open for your questions.
Our second quarter results continue to demonstrate the strength of our portfolio and our strategic positioning in the most attractive, accretive, and resilient markets globally. This is translating to financial performance, and we closed the first half of the year with solid growth across revenue, earnings per share, free cash flow, and expanded EBITDA and pretax segment operating margins. International revenue continued its strong growth momentum, increasing 21% year-on-year as we captured broad growth across all divisions and geographic areas. Second quarter revenue increased by more than 20% year-on-year in 14 of our 25 international GeoUnits. Most notably, Saudi Arabia, UAE, Mexico, Guyana, Brazil, Angola, Caspian, and India all grew more than 30% over this period. This drove our highest year-on-year international incremental operating margin over the last three years, and it underscores the breadth of our portfolio that I continue to emphasize.
SLB's growth -- SLB's global reach shields us from regional fluctuations, as we have recently seen in North America, and gives us the ability to seize opportunities wherever they arise. This is a true differentiator for our business and positions us for long-term outperformance. Following the remarks I shared in our earnings release this morning, I would like to reflect on a few notable highlights from the quarter.
The broad growth characterizing this upcycle continues internationally, this was pervasive, and we were very pleased to see all divisions and geographies grow revenue and expand margins sequentially. In North America, we continued to increase our revenue, highlighting our agility across the land markets and the expanded activity in the U.S. Gulf of Mexico, solidly outperforming the rig count. Our focus on the quality of our revenue continues to support our margins. Sequentially, we expanded our pretax segment operating margins. This was fueled by our strong international operating leverage, increased technology adoption, and positive pricing trends that stemmed from inflation-driven contract adjustments and tight service capacity.
And with higher earnings and improved working capital, our sequential cash flow from operations grew considerably, and we generated free cash flow of nearly $1 billion during the quarter. I want to thank the entire SLB team for their hard work and exceptional performance delivering value for our customers and our shareholders throughout the quarter.
Now, let me take a moment to touch on the macro environment. As we have projected for the past few quarters, the international and offshore markets continue to exhibit strong growth as North America has moderated. This is playing to the strengths of our business, as international revenue represents nearly 80% of our global portfolio, and offshore comprises nearly half of that. As the growth rate shifts further toward international, these market conditions are driving the breadth, resilience, and durability of this upcycle and creating new opportunities for our business. Let me describe where this is taking place.
In the international markets, the investment momentum of the past few years is accelerating. This is supported by resilient long-cycle developments in Guyana, Brazil, Norway, and Turkey; production capacity expansions in the Middle East, notably in Saudi Arabia, UAE, and Qatar; the return of exploration and appraisal across Africa and the Eastern Mediterranean; and the recognition of gas as a critical fuel source for energy security and the energy transition. In the Middle East, this is resulting in record levels of upstream investment. From 2023 to 2025, Saudi Arabia is expected to allocate nearly $100 billion to upstream oil and gas capital expenditure, a 60% increase compared to the previous three years, as they invest to attain a maximum sustained production capacity of 13 million barrels per day by 2027. Several other countries in the region have also announced material increases in capital expenditures that extend beyond 2025.
Furthermore, we continue to witness a broad resurgence in offshore driven by energy security and regionalization. Operators all over the world are making large-scale commitments to hasten discovery, accelerate development times, and increase the productivity of their assets. This is resulting in increased infill and tie back activity in mature basins, new development projects both in oil and gas, and support for new exploration. With this backdrop, we anticipate more than $500 billion in global FID between 2022 and 2025, with more than $200 billion attributable to deepwater. This reflects an increase of nearly 90% when compared to 2016, 2019. These FID investments are global, taking place in more than 30 countries, and we are seeing the results with new projects in offshore basins across the world. This is reflected in the many contract awards highlighted in the earnings press release, notably in Mexico, Brazil, and Turkey. These contracts, in addition to many others, are building a strong foundation of activity outlook decoupled from short-term commodity price volatility.
Moving forward, we expect further growth to be led by accelerating activity in Well Construction, new opportunities for Reservoir Performance in exploration and appraisal, expansion for Production Systems in subsea; and digital will enhance it all. In our business and the industry as a whole, the increased adoption and integration of digital technologies remains one of the most significant opportunities for growth. Indeed, our industry generates massive amounts of data, and by capturing that information and turning it into trusted and actionable insights, we can make energy production more accessible, more affordable, and more sustainable. This is a critical moment for our industry, and there are three digital trends concurrently shaping its future, clearly setting the path for a higher value, lower carbon outlook.
First, the adoption of cloud computing at scale. For geoscience workflows, this is supporting significant productivity gains for geoscientists and engineers across asset development teams. This is happening at a time when our industry is compelled to accelerate the development cycle and de-risk both subsurface and surface uncertainties. We continue to benefit from this trend in the adoption of our Delfi cloud-based digital platform, delivered through a flexible and personalized software-as-a-service (SaaS) subscription model, with the cumulative number of users in global customer organizations growing 60% year-on-year, to 5,400. As we shared in our earnings press release, Petrobras and ENAP are only just two examples of customers deploying Delfi enterprise-wide with the aim of fundamentally changing how they work across the E&P value chain.
Second, our industry is unlocking the power of data at scale. A single well can produce more than 10 terabytes of data per day. And this doesn't even begin to touch on the total amount of upstream data across exploration, development, and production workflows. The adoption of open data platforms across the industry is liberating data for artificial intelligence (AI) applications at large -- at scale. SLB is benefitting from and driving this trend, through both data foundations and AI deployment. We are seeing early success with the commercialization of our Enterprise Data Solution powered by Microsoft Energy Data Services. This offering delivers the most comprehensive capabilities for subsurface data in alignment with the emerging requirements of the OSDU Technical Standard. And we are witnessing tremendous success with our INNOVATION FACTORI, where we have developed more than 100 AI solutions with more than 80 customers since 2021, all of them with rich domain content in addition to generic AI capabilities.
Third, digital operations are gaining in maturity, transforming the way operators develop and utilize assets. From automation to autonomous operations, across both well construction and production, we are clearly seeing an inflection in the deployment of digital operations with significant impacts on efficiency, carbon footprint, and performance. Today, customers are accelerating their adoption of our Neuro autonomous solutions, with Kuwait Oil Company and PETRONAS both using these technologies to reduce manual operations while increasing performance, enabling drilling consistency and rig time savings. Similarly, our partnership with Cognite, as a platform for unlocking access to production operations, is gaining momentum in the industry, as exemplified with the Cairn contract highlighted in our earnings release. Finally, we continue to deploy Delfi Edge Agora technology to deliver real-time insights directly within operations from connected hardware, where data is generated and processed with AI at the edge. We currently have more than 1,400 connected assets deployed, doubling year-on-year.
SLB is positioned to fully harness these positive market conditions as well as our technology and digital leadership to drive financial outperformance and margin expansion. We are progressing on our journey to double the size of our digital business between 2021 and 2025, and the trends I have just discussed are reinforcing our confidence in the outcome of our strategy execution.
I'll next describe how we see the rest of the year progressing. After a positive first half, we remain confident in our full-year financial ambitions and have visibility into a significant baseload of activity that reinforces our 2023 full-year forecasts, and our growth ambition beyond. We continue to expect year-on-year revenue growth of more than 15% and adjusted EBITDA growth in the mid-20s.
Turning specifically to the third quarter, we expect revenue to grow by mid-single-digits in the international markets, with all international geographical areas growing sequentially, led by the Middle East and Asia. In contrast, North America revenue will be slightly down. With our focus on the quality of revenue, harnessing operating leverage, and further technology adoption, we expect global operating margins to further expand by more than 50 basis points sequentially. This will result in the -- into the highest EBITDA margin we have seen in this cycle.
I will now turn the call over to Stephane.