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A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to
4 de oct. de 2022 · 2022-10-04. Table of Contents. Substructures. Purpose & Application. Types of Derricks. Components Of Standard Derrick In Drilling Rigs. Drilling Rig Derrick Construction In Oil & Gas. Derrick Sizes and General Dimensions In Drilling Rigs. Tolerances For Standard Derricks in drilling rigs: Pros & Cons Of Oil Derricks Above Over Masts.
Derrick Corporation and Derrick Equipment Company – manufacturer of separation technology for oil & gas drilling, mining & industrial, civil construction.
Identifying Derricks. Much like a crane, a derrick is used for moving materials vertically and horizontally, comprised of a hoisting mechanism and pulleys or sheaves to create a mechanical advantage to lift large loads. Unlike a crane, a derrick usually has a vertical stationary mast extending from a base and a moveable boom.
3.1.1 A swinging derrick system comprises a derrick boom pivoted at its heel and supporting the load from a head fitting. The boom is raised or lowered (luffed) by means of a span rope between the boom head and a suitable fixed point, usually a mast or derrick post. The boom is moved laterally (slewed) by guy ropes attached at the boom head.
In the petroleum industry, a derrick consisting of a framework or tower of wood or steel is erected over the deep drill holes of oil wells to support the tackle for boring, to raise and lower the drilling tools in the well, and to insert and remove the well casing or pipe. Similar smaller structures mounted on trucks are also called derricks.
7.1 General. 7.1.1 The scantlings of masts and derrick posts intended to support derrick booms and similar lifting appliances are to be determined from the highest combination of stresses expected to arise when the gear is used in its most severe operating condition. Materials are to comply with Ch 2, 1.5 Materials 1.5.2 .
