دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a drilling rig on which the energy from the power source usually several diesel engines is changed to electricity by generators mounted on the engines. The electrical power is then distributed through electrical conductors to electric motors. The motors power the various rig components. Compare mechanical rig.

n: a kind of drilling rig powered by electric force and all of whose assemblies are driven by the electric conductor

a drilling rig where the power source is electricity provided by a generator.

n: a drilling rig in which the source of power is one or more internalcombustion engines and in which the power is distributed to rig components through mechanical devices (such as chains, sprockets, clutches, and shafts). Also called a power rig. Compare electric rig. mechanical sticking n: a condition in which solid material such as sloughing shale, sand, or shale driven uphole by a blowout, or junk in the hole causes the drill stem to become stuck against the wall of the wellbore.

n: see mechanical rig.

n: see mechanical rig.

n: see mechanical rig.

n: a hydraulic device connected between an engine and a mechanical load such as a compound. Torque converters are characterized by an ability to increase output torque as the load causes a reduction in speed. Torque converters are used on mechanical rigs that have compounds.

n: It be setted between the engine and drive mechanism,which can increase the torque when velocity decline caused by loading increasing.