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TDS 8  Top Drive
TDS 8 Top Drive
Fixed Electric Top Drives

For more information contact Offshore Rig Solutions: 

10000 Richmond Ave

Houston TX 77042

Phone: 713-346-7500

Fax: 713-435-2195


Related Information

The Evolution of Top Drive Drilling

In 1981 the first top drive was introduced; providing the drilling community with clear advantages to traditional Kelly drilling, such as, increased safety, well control and performance.

20 years later, National Oilwell Varco (NOV), the engineering pioneer behind the top drive revolution, introduced the TDS 8.

Thanks to its unmatched reliability and global service and support network, the TDS 8 is the drilling industry’s most prolific 750 ton top drive on the market.

The TDS 8 Top Drive has the “AC Advantage” with its use of a 1150 hp AC drilling motor and is a multi-purpose tool ideal for use on semi-submersibles and jack-up as well as large land applications.

For more information on the TDS 8, contact National Oilwell Varco at

Compact Design:24 ft stack-up height
Rugged and Robust:Operating temperatures from -20 to 45°C
Versatile:Can fit in over 95% of derricks


Hoisting Capacity:750 tons
API Rotating Capacity:640 tons
Drilling Motor:1150 hp AC
Continuous Torque:62,500 lb-ft 
Make-up Torque:95,000 lb-ft
Break-out Torque:103,000 lb-ft
Drilling Speed:0-270 RPM
Elevator Links:350-750 tons