This book has been the standard text on methods of 3-D seismic interpretation since its first publication in 1986. With 18,000 copies now sold, popularity is well established worldwide. This new edition keeps the material current and several new examples and methods have been incorporated. However, many long-established interpretation methods are still valid and they feature prominently. The prime focus is the synergy between 3-D data and the workstation. Extraction of more geologic information is emphasized throughout. The author believes that many interpreters underutilize their data. This book passionately addresses that problem.