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.
Document Control involves the storage, access, indexing, retrieval, distribution and deletion of documents within an organization. Security, version control, availability, and audit trails are all considerations that must be made when managing electronic or physical documents. Document controllers typically oversee and facilitate the distribution and security of this information within an organization, and they often use electronic document management systems to do so.