Elizabeth Oko is a principal geologist at Shell, currently working in the Deepwater Appraisal Team. Her expertise is in subsurface characterization, integration, and risk/uncertainty management from frontier basin exploration to production projects in deepwater depositional settings, including sub-salt plays. She has a passion for staff development, upskilling subsurface professionals to grasp how their work impacts value-based decisions and underpins the production promise of a field. Oko received her Master of Science in geology from Kansas State University and her Bachelor of Science in geosciences from Southeast Missouri State University.