Derrick ( drilling rig ) – Petroleum Industry – Readyzone

Derrick The conventional derrick is a four-sided truncated pyramid ordinarily constructed of structural steel, although tubular steel is used infrequently for certain parts of the derrick. Derricks may be either portable or nonportable, the portable derrick being commonly referred to as a mast. The nonportable derrick is usually erected by bolting the structural members together. After the well has been…

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