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.
FPSOs (Floating Production Storage and Offloading) are floating vessels where oil is processed and stored, ready for transportation. They are usually located near an oil platform and are more common in regions where no pipeline infrastructure is setup. They are also referred to as FPUs or Floating Production Units.