J. W. Heinsbroek

Part of Core Laboratories, Inc., Saybolt International BV is a Dutch petroleum services company that provides reservoir fluid and petrophysical services to the oil and gas industry. The company is based in Vlaardingen, Netherlands. The company offers data and services that characterize the porous reservoir rock and all three reservoir fluids - gas, oil and water. Peter Wilhelmus Gerardus Boks has been the CEO of the company since 1996.

Core Laboratories NV engages in the provision of proprietary and patented reservoir description, production enhancement, and reservoir management services to the oil and gas industry. It operates through the Reservoir Description segment and Production Enhancement segment. The Reservoir Description segment encompasses the characterization of petroleum reservoir rock, fluid, and gas samples and provides analytical and field services to characterize properties of crude oil and petroleum products. The Production Enhancement segment provides products and services relating to reservoir well completions, perforations, stimulations, and production. The company was founded in 1936 and is headquartered in Amsterdam, the Netherlands.