دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

drive rig n: see electric rig.

n: the transmission shaft for the drawworks that is driven directly by the compounding transmission on a mechanicaIdrive rig and is connected to it with the master clutch;or, on an electric-drive rig, the shaft driven directly by the electric motors. The input shaft drives the jackshaft or output shaft.

n: the input shaft that drives the drawwork.

n: once the drawworks receives power from either the compound or electric motors, the type of transmission that allows the driller to select how the power is distributed (torque! speed combinations) to various components of the drawworks. The drawworks on both mechanical-drive and electric-drive rigs have a selective transmission.