As home to supermajors, as well as a plethora of smaller, independent energy players, the US boasts one of the largest concentrations of energy personnel in the world. With its insatiable appetite for energy resources, the United States is the world's single largest consumer of oil, using as much as 20.73 million barrels per day as of 2008. Recently, interest has peaked in the vast quantity of untapped natural gas resources in the US, the reserves of which were inventoried in 2008 at 238 Tcf, with producers specifically targeting the nation's promising shale formations for this energy commodity.
Geologists apply their knowledge of the earth and its structures to help find and extract oil and gas. Although geologists are usually tied to the location of deposits, they are involved in all aspects of discovery and production. Geologists look at structure and sediment, as well as interpret other geophysical information to help make decisions on where to drill. They must understand the origin, amount and movement of oil as well as any obstacles that may be in the way of deposits before drilling can begin. Geologists will help find deposits all over the world including on land and under the ocean. A strong geoscience background is required for these types of positions.