A DRILLING RIG AND DRAWWORKS THEREFOR

摘要

A drilling rig comprising a derrick, a crown block and a travelling block , a wireline and a drawworks for taking in and playing out the wireline, cha racterised in that.the drawworks comprises a motor (130) having a rotor (132 ), a stator (134) and at least one winding (136) the drawworks further compr ising a power cable (150) passing through the motor shaft (130), wherein the motor further comprises one channel (139,142) arranged adjacent the power c able (150) for the passage therethrough of a fluid for cooling the power cab le.