Book excerpt: Principles of Petroleum Development Geology examines concepts that are fundamental to the success of tomorrow's petroleum geologists whether they call themselves exploration, development or environmental geologists. Petroleum development geology contains strong aspects of structural geology, reservoir engineering, drilling engineering, petrophysics, reflection seismology, and petroleum land management. This textbook is designed to outline the most salient aspects of these disciplines as they apply to development geology. Written on an introductory level, the book places emphasis on principles. Field examples and practical problems with solutions are included.