Oil and Gas Exploration
Geologists and geophysicists detect valuable underground oil and gas fuel supplies using sophisticated methods, such as gravity survey, magnetic survey, and seismic surveys. Finding and developing underground oil and gas reserves is considered the "upstream" part of the petroleum industry.
Maps of Petroleum and Natural Gas Resources, Reserves, Production, Exploration
This collection of detailed maps from the U.S. Energy Information Administration (EIA) shows oil and natural gas exploration, resources, reserves, and production in the lower 48 states.