schlumberger is the world's leading provider of technology for reservoir characterization, drilling, production, and processing to the oil and gas industry. working in more than 85 countries and employing approximately 113,000 people who represent over 140 nationalities, schlumberger supplies the industry's most comprehensive range of products and services, from exploration through production and integrated pore-to-pipeline solutions for hydrocarbon recovery that optimize reservoir performance.schlumberger limited has principal offices in paris, houston, london and the hague, and reported revenues of $35.47 billion in 2015. for more information, visit www.slb.com.