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.
Maintenance engineers apply engineering concepts in order to achieve better maintainability and reliability of machinery and equipment in the most efficient ways possible. They will use statistics, probability and logistics to solve problems, as well as use lean six sigma principles in order to optimize the maintenance process. Maintenance engineers have a number of responsibilities including conducting periodic inspections, performing system upgrades and changes, troubleshooting equipment issues and determining when repair and replacements need to take place. Maintenance engineers generally have a bachelor’s degree in engineering or applied science, and can be found in almost every aspect of the oil and gas industry.