This book is a comprehensive introduction to the application of geology and geophysics in the search for and production of oil and gas. This book is uniquely structured to reflect the sequential and cyclical processes of exploration, appraisal, development, and production. Chapters dedicated to each of these aspects are further illustrated by case histories drawn from the authors' experiences. Petroleum Geoscience has a global and 'geotemporal' backdrop, using examples from around the world and from petroleum systems ranging in age from late Precambrian to Pliocene.