Drilling rigs are integrated systems for boring holes in Earth's subsurface. Can be mobile equipment or permanent structures like oil platforms. Used for mineral exploration, testing, and installing underground structures
Well logging records geologic formations penetrated by boreholes. Can be performed during drilling, completion, production or abandonment. Used in oil, gas, groundwater, mineral and geothermal exploration
Natural gas comes from crude oil, gas, and condensate wells. 89% of U.S. wellhead production is non-associated gas. Gas can be sweet (free of H2S), sour (high H2S), or acid (containing H2S)
Rifts are linear zones where lithosphere is being pulled apart. Typical features include grabens and half-graben with normal faulting. Rift valleys may contain water, forming lakes. Most rifts consist of separate segments controlled by single fault
Natural gas is a mixture of methane (95%) and other hydrocarbons. Forms underground from organic matter under anaerobic conditions. Contains traces of carbon dioxide, nitrogen, hydrogen sulfide, and helium
World's largest inland body of water, spanning 750 miles from north to south. Covers 149,200 square miles, larger than Japan's area. Maximum depth reaches 3,360 feet, surface lies 90 feet below sea level. Contains 63.4 billion acre-feet of water, one-third of Earth's inland surface