Mentoring Program Marius Dobrescu Sand Control Engineer, Schlumberger Sand Control Marius Dobrescu holds a BSc. Degree in Petroleum Engineering at Petroleum-Gas University of Ploiesti, Romania. He joined the professional upstream oil and gas industry just immediately after graduation, in 2012, with the biggest operator in South-East of Europe - OMV Petrom S.A. - as a Sand Control Engineer in Sand Control & Stimulation Department.