Based in Rueil-Malmaison, France (near Paris), CYDAREX is a spin-off company of the French Institute of Petroleum and was created in 2005 by Roland Lenormand. CYDAREX is now completely independent and privatly owned.

CYDAREX specializes in the domain of core and cuttings analysis, provides consulting and training services, provides core analysis teaching equipments, commercializes DarcyLog™, DarcyPress™, DarcyShale™, and DarcyCap™, and develops the conventional and special core analysis software CYDAR.