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Technology Categories
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| Definition Of: |
Top Drive
A device similar to a power swivel that is used in place of the rotary table on a drilling rig to turn the drill stem. Hung from the hook of the traveling block, a top drive also suspends the drill stem in the hole and includes power tongs. Modern top drives combine elevators, tongs, swivel and hook.
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Energy INDEX:
List of Terms: Terms beginning with "A", Page 1 |
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Page Number:
1 2 3 A: Page 1 of 3.
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