This is a ‘go-to’ guide for decision makers and professional explorers – of the suitability and applicability of each technology in a variety of geological settings. The guide looks at specific hurdles for de-risking the subsurface, such as hard chalk at seabed, salt and basalt and indicates what the optimal technology combinations are best to overcome them. It also gives an indicative cost required for each technology broadly relative to that of a conventional seismic survey.