Is the world running out of hydrocarbons? Where will we find oil and gas to fuel the twenty-first century? Are unconventional sources of hydrocarbons waiting to be tapped? This book addresses these important issues concerning energy needs in this century. The volume is a compilation of expert papers presented at the second Wallace E. Pratt Memorial Conference, Petroleum Provinces of the Twenty-first Century, held at San Diego, California, on January 12-15, 2000. The chapters describe the remaining hydrocarbon potential of most of the major petroleum basins that likely will provide the world's energy in the near future. Topics include: significance of hydrocarbon discoveries in the 1990s, the question of whether the world is running out of hydrocarbons, nontraditional hydrocarbon sources such as old fields and natural-gas hydrates, and hydrocarbon potential of North America, the United Kingdom, Asia, Central and South America, the Middle East, and Africa. Petroleum Provinces of the Twenty-first Century deals with all aspects of petroleum systems-source, reservoir, seal, and migration. The book will interest explorers and managers who want a global perspective on exploration opportunities and a concise introduction to the petroleum geology of a particular area.