Top Drive
AssemblyMotor-driven swivel that rotates the drill string from the traveling block, replacing the rotary table for most operations and circulating mud while tripping. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Top Drive
10 top-level lines as of r50303| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Stator Assembly 3 parts | stator-assembly | 2× | 2 | 0 | assembly |
| 2 | Rotor Assembly 4 parts | rotor-assembly | 2× | 2 | 0 | assembly |
| 3 | Helical Gear Pair | gear-pair | 4× | 4 | · | part |
| 4 | Wash Pipe Assembly | drillship-wash-pipe | 1× | 1 | · | part |
| 5 | IBOP Valve | drillship-ibop-valve | 2× | 2 | · | part |
| 6 | Top-Drive Pipe Handler | drillship-pipe-handler | 1× | 1 | · | part |
| 7 | Ball Bearing | ball-bearing | 6× | 6 | · | part |
| 8 | O-Ring Set | oring-set | 40× | 40 | · | part |
| 9 | Hydraulic Cylinder 4 parts | drillship-hydraulic-cylinder | 6× | 6 | 0 | assembly |
| 10 | Control & I/O Board 4 parts | drillship-control-board | 2× | 2 | 0 | assembly |