Surface Drive Head
AssemblyThe surface rotary unit that supports the rod-string axial load, seals the wellhead against produced fluid, and converts motor torque into rotation of the polished rod. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Surface Drive Head
8 top-level lines as of r133808| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Drive Head Frame | pcp-drive-frame | 1× | 1 | · | part |
| 2 | Hollow Drive Shaft | pcp-hollow-drive-shaft | 1× | 1 | · | part |
| 3 | Thrust Bearing Assembly 2 parts | pcp-thrust-bearing | 1× | 1 | 0 | assembly |
| 4 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 5 | Stuffing Box 3 parts | pcp-stuffing-box | 1× | 1 | 0 | assembly |
| 6 | Backspin Brake 3 parts | pcp-backspin-brake | 1× | 1 | 0 | assembly |
| 7 | Oil Seal | oil-seal | 2× | 2 | · | part |
| 8 | Fastener Set | fastener-set | 1× | 1 | · | part |