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.
A drilling engineer’s main responsibility is to manage the drilling of a well to produce oil or gas as safely and efficiently as possible. Drilling Engineers are involved from the initial well planning and design, through well testing, completion, and finally abandonment. Designing and maintaining the equipment used for oil and gas extraction is another one of their responsibilities, as well as performing cost estimates and keeping track of drilling rates. Drilling engineers work in both the office and the field, which could be either onshore or offshore. Generally drilling engineers complete an engineering degree in petroleum, mechanical or chemical engineering.