After gaining his PhD in Sedimentology from Bristol University, Dr John Marshall worked in the oil and gas industry for over 30 years as a development geologist, predominantly for Shell. He has worked on fields from the North Sea and western Europe along with Venezuela, Oman, Syria and Australia.
The work has included planning and drilling wells, oil and gas field development planning, feasibility scoping for enhanced oil recovery, and integration of geology with time-lapse seismic. In 2012 he retired from Shell and set up a small consultancy, Skrinkle Reservoir Geology, to conduct project work and training. This led to participation in a Carbon Capture and Sequestration project planned for offshore Scotland, and delivery of training courses on reservoir modelling, development geology and Carbon Storage.
