What does top drive mean?

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top drive

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Wikipedia

  1. 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.

Wikidata

  1. Top drive

    A top drive is a mechanical device on a drilling rig that provides clockwise torque to the drill string to facilitate the process of drilling a borehole. It is an alternative to rotary table. It is located at the swivel place and allows a vertical movement up and down the derrick. An advantage of a top drive is that it allows the drilling rig to drill longer sections of a stand of drill pipe. A rotary table type rig can only drill 30-foot sections of drill pipe while a top drive can drill 60–90-foot stands, depending on the drilling rig type. Having longer sections of drill pipe allows the drilling rigs to drill deeper sections of the wellbore, thus making fewer connections of drill pipe. Another advantage of top drive systems is time efficiency. When the bit progresses under a kelly, the entire string must be withdrawn from the well bore for the length of the kelly drive. With a top drive, the draw works only has to pick a new stand from the rack and make two joints. The savings in time reduces the risk of a stuck string from annulus clogging.

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Numerology

  1. Chaldean Numerology

    The numerical value of top drive in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of top drive in Pythagorean Numerology is: 1

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"top drive." Definitions.net. STANDS4 LLC, 2024. Web. 21 May 2024. <https://www.definitions.net/definition/top+drive>.

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