Schlumberger

Schlumberger Limited is a multinational oilfield services company that provides technology, project management, and information solutions to customers in the energy industry. It is the largest provider of such services worldwide by revenue and operates in more than 120 countries, employing tens of thousands of people.

Schlumberger was founded in 1926 by French brothers Marcel and Conrad Schlumberger as the Société de Prospection Schlumberger in Paris. The company pioneered electrical well logging and formation evaluation, laying the groundwork for modern reservoir characterization. Through the 20th century it expanded internationally and diversified into drilling, completion, and production services.

In the late 20th and early 21st centuries it reorganized as Schlumberger Limited (and Schlumberger N.V. as part of a dual-listed corporate structure) to optimize cross-border operations. A major expansion came with the 2010 acquisition of Smith International, broadening its drilling and completion equipment offerings. The company has also invested in digital oilfield solutions, including the DELFI cognitive E&P platform launched in the 2010s.

Schlumberger's business is organized into segments that cover reservoir characterization, drilling, and production, providing tools and services such as wireline logging, measurement-while-drilling, seismic data acquisition, well testing, cementing, stimulation, and interventions. It also operates Schlumberger-Doll Research, the company's research arm dedicated to technological development.

Competition includes Halliburton and Baker Hughes. Schlumberger continues to emphasize research and digital integration to improve efficiency and reduce costs in oil and gas projects.