What is the main function of top drive?
A top drive is a mechanical device on a drilling rig that provides clockwise torque to the drill string to drill a borehole. It is an alternative to the rotary table and kelly drive. It is located at the swivel’s place below the traveling block and moves vertically up and down the derrick.
Can rig top drive?
Top drives reduce risk and increase safety while drilling in several ways. First, a top drive allows the driller to quickly engage and disengage pumps or the rotary while removing or restringing the pipe.
What is a top drive valve?
Upper top drive valves Intended for using as part of the upper power drive system for prompt overlap and pressurization of the drilling instrument tube channel in drilling the oil and gas wells, and also in maintenance and emergency works. (Mechanized control).
How much weight can a top drive typically hoist?
Hoisting capacity of this system is a full, 500 tons, using standard links and a drill pipe elevator or casing tools.
Why choose Canrig top drives?
Known as the highest quality top drives in the industry, Canrig’s portfolio of top drive systems includes both hydraulic and electric -powered units, with the highest performance of torque and speed in the industry. The durability of Canrig’s top drives is second to none.
What is the Canrig Sigma 500-ton top drive?
The Canrig® Sigma 500-ton top drive is the next generation top drive, completely reimagined to endure the harshest drilling conditions while operating with the highest continuous torque in its class.
What sizes do Canrig drives come in?
Available in sizes ranging from 150-ton to 1000-ton units, each unit comes with many different features to optimize drilling efficiency and safety. Whether building the next generation of AC class rigs, retrofitting a mature mechanical rig or replacing an older model, Canrig can provide a top drive for any application.
Why choose our top drive systems?
Our top drive systems offer unmatched performance and reliability while continuing to drive longer, heavier strings through complex formations. For decades, the industry has relied on brands like Varco, National, and Hydralift to push the boundaries of equipment design.