Previously he was the Manager of Technical Services of Yukos EP , where he was in charge of the design and technical analysis of a gas plant with capacity 1.8 billion m3/yr gas . His achievements include boosting oil production 17.2% per year since 1999 using ESP and Gas Lift systems .
During his career life, Dr. Zorbalas worked as a Production Manager , a Project Manager , a Technical Manager , a Production Engineer , a Production Supervisor , and a Field Engineer . He worked for many world-class oil/gas companies such as ConocoPhillips , MOBIL E&P , Schlumberger , Wintershall , Taylor Energy and Rowan Drilling before joining Yukos .
Dr. Zorbalas' technical specialty includes Artificial Lift Systems ( Gas Lift , ESP , Rod Pumping ), Production Optimization , Well Completion , Sand Control , Well Testing , PLT Correlation , acid stimulation and completion design .
Dr. Zorbalas has PhD , MSc , and BSc in Petroleum Engineering from Mississippi State University , USA . He has numerous publications and he is an active member of the Society of Petroleum Engineers ( SPE ).