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.
Coiled tubing is a continuous length of flexible pipe wound on a spool that is straightened prior to pushing into a wellbore. There are a number of well intervention operations that can be achieved via coiled tubing, and it is sometimes used as production tubing in depleted gas wells. It is often more cost and time-effective than having to remove tubing from the well, as coiled tubing can be inserted into the tubing against the pressure of the well. Another advantage versus wirelining, is the ability to pump chemicals through the coil.