JAS Petroleo - a subsidiary of the Artex Group - designs tools for the oil well logging industry. The Artex Group is builds and sells open/cased hole wireline trucks. The cased hole tool design is being done in Argentina by JAS Petroleo, and the trucks are being built in Brenham, Texas. Trucks come complete with the Warrior logging system and can be custom built for the open hole and cased hole logging industry.