Seismic interpretation is an art or a skill that is acquired with experience, which I happened to attain during my long stint with Oil and Natural Gas Corporation (ONGC), India. On my superannuation from ONGC after 37 years of service, my passion for seismic interpretation encouraged me to take up consulting projects and teaching assignments at Indian Universities, which I have enjoyed very much till the present. A few years ago, my good friend and erstwhile colleague at ONGC, Satinder Chopra of Arcis Seismic Solutions, TGS, Calgary, Canada, suggested that I should condense my long-standing experience in seismic interpretation in the form of a book. His persistent persuasion eventually compelled me to take up this task. From the beginning, Satinder has been extremely supportive and obliging in developing the project, both in mind and matter. His genial and meticulous review of the manuscript has fi nally brought the book to its present form. I gratefully and profoundly thank Satinder for these acts. <...>