Engr. Nnanna Okoli is a seasoned Petroleum Engineer. He has worked as a Field Engineer at Mobil Producing Nigeria, QIT, Akwa Ibom State. He also worked in the pre-commissioning phase of the EGINA FPSO project operated by Total Energies. He had a stint at an upstream drilling company- Transocean Support Services. He has worked in various well sites, ranging from Land rig, Swamp, offshore and deep-water operations as a Drilling Fluid Engineer, Well-site Petroleum/Completion Engineer, Mud Logging Engineer and Well-head Engineer. Nnanna studied Petroleum Engineering in his first degree at the Federal University of Technology Owerri and he holds a Masters in Petroleum Economics, Management and Policy from Emerald Energy Institute, University of Port Harcourt. He is currently at the final stages of his PhD program at the Emerald Energy Institute, University of Port Harcourt. Nnanna has over 15years oilfield experience in Drilling, Completion and Drilling Fluids Engineering Services. Nnanna lectures at the Department of Petroleum Engineering, Federal University of Technology, Owerri. He has published more than 15 peer reviewed journals. He is happily married to Mrs. Ifechukwu Okoli.