دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a large, specially designed, self-propelled workover rig that is driven directly to the well site. Power from a carrier rigs hoist engine or engines also propels the rig on the road. While a carrier rig is primarily intended to perform workovers, it can also be used to drill relatively shallow wells. A carrier rig may be a back-in type or a drive-in type. Compare back-in unit, drive-in unit.

n: A kind of portable service machine. The derrick mask, drawworks, motor and other necessary additional service rig.

a self propelled drilling or workover rig.

n: see carrier rig.

n: a type of portable service or workover rig that is self-propelled, using power from the hoisting engines. The drivers cab and steering wheel are mounted on the same end as the mast support;thus the unit can be driven straight ahead to reach the wellhead. See carrier rig.

n: see carrier rig.

n: a portable rig, truckmounted, trailer-mounted, or a carrier rig, consisting of a hoist and engine with a selferecting mast. See carrier rig. Compare workover rig.