E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/00 (2006.01)
Patent
CA 2678096
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, characterised in that.the drawworks comprises a motor (130) having a rotor (132), a stator (134) and at least one winding (136) the drawworks further comprising a power cable (150) passing through the motor shaft (130), wherein the motor further comprises one channel (139,142) arranged adjacent the power cable (150) for the passage therethrough of a fluid for cooling the power cable.
La présente invention concerne un appareil de forage comprenant un derrick, un moufle fixe et un moufle mobile, un câble de forage et un treuil de forage pour monter et descendre le câble de forage, caractérisé en ce que le treuil de forage comprend un moteur (130) présentant un rotor (132), un stator (134) et au moins un enroulement (136), le treuil de forage comprenant en outre un câble d'alimentation (150) passant à travers l'arbre du moteur (130), le moteur comprenant en outre un conduit (139, 142) disposé de manière adjacente au câble d'alimentation (150) et destiné au passage à travers celui-ci d'un fluide permettant de refroidir le câble d'alimentation.
Cervenka Gregory Paul
Mesrobian Azad
Yang James Deshine
Mcfadden Fincham
National Oilwell Varco L.p.
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