دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an internal-combustion engine used to power a drilling rig. From two to six engines are used on a rotary rig and are usually fueled by diesel fuel, although liquefied petroleum gas, natural gas, and, very rarely, gasoline can also be used.

n: the internal combustion engine used as drilling rig power