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.
Geoscientist is a general term used to describe the individuals responsible for locating, evaluating and developing oil and gas reservoirs. Geoscience professionals use technology and applied science to maximize the recovery of oil and gas. They are present at all phases of the reservoir life cycle, from exploration, through drilling, production and eventually abandonment. They will measure and map seismic, magnetic, and other earth forces that affect the earth, as well as study and interpret data that is useful in locating oil and gas reservoirs. Geochemists, geologists, geophysicists, as well as geoscience technicians all fall into this category.