National Oilwell Varco Datasheets for Top Drives
Top drives are suspended mechanical devices that provide torque to the drill string and serve as an alternative to the use of a Kelly drive or rotary table.
Top Drives: Learn more
|Hydraulic Top Drives We offer a premier line of hydraulic top drive drilling systems for today's advanced land drilling rigs. We continue to provide low maintenance, high performance, hydraulic top...|
|Portable Electric Top Drives We offer the premier line of top drive drilling systems for today's advanced land drilling rigs. We lead the development of AC technology for land drilling...|