The compilation of this volume was not possible without the contributions from many borehole image specialists across the industry and academia. The editors are most grateful for the time and effort of the numerous reviewers: Graham Aplin, Mike Ashton, Goos Bakker, Homero Castillio, Andrew Cook, Freddy Curby, Quintin Davies, Andy Duncan, Paul Elliot, Willem Epping, Roddy McGarva, Caroline Clark, Kelly Hazlip, Vincent Hilton, Jean-Bernard Joubert, Christophe Mercadier, Alison Mabillard, John Marshall, Ron Nelson, Gerard Niks, Christian Ottesen, Jeremy Prosser, Fritz Rambow, Malcolm Rider, Steve Rogers, Shaun Sadler, Lena Thrane, Gerhard Templeton, Robert Trice, Manoj Vallikkat, and Deborah Walker. This volume was compiled thanks to these specialists and Shell's Borehole Imaging Team. The authors are also grateful for editorial comments by Peter Scott-Wilson and Suzanna Atkinson on the introduction.