American Association of Petroleum Geologists (AAPG) Founded in 1917, AAPG is the world's largest professional geological society. AAPG is a pillar of the world-wide scientific community. Our books foster timely scientific research, advance the science of geology and promote the most efficient methods of energy exploration & processing technology and practices available today. Some of the areas we publish in Well Log Analysis Geological Modeling Carbonate Petrology Seismic Imaging Reservoir Characterization Regional Petroleum Analysis Tectonics and Sedimentation Stratigraphy