The potential of carbon capture, utilisation and storage (CCUS, also known as carbon sequestration) for the removal of large volumes of CO2 from power stations and industrial clusters prior to its release into the atmosphere, depends on suitable reservoir and trap that will maintain seal integrity over thousands of years. Not surprisingly then, a successful CCUS strategy relies on many aspects of geoscience that have been developed over decades of hydrocarbon exploration and production – including porosity and permeability evaluation, fracture network characterisation, fault seal analysis, structural trap appraisal, geomechanics, and capacity estimation.