The most basic type of derrick is controlled by three or four lines connected to the top of the mast, which allow it both to move laterally and cant up and down. To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a crane.
How does a derrick work?
About Oil Derricks
The classic oil derrick pump is known colloquially as a sucker rod pump, named for the plunger-like mechanics it uses to pump oil from underground wells up to the surface. It uses a series of gears and cranks to pump a polished rod up and down an oil well in a piston-like motion, albeit much slower.
What is Derrick structure?
A derrick is a semi-permanent structure of square or rectangular cross-sections having members that are latticed or trussed on all four sides. This unit must be assembled in the vertical or operation position, as it includes no erection mechanism. It may or may not be guyed.
What’s the difference between a crane and a derrick?
As nouns the difference between crane and derrick
is that crane is a large bird of the order gruiformes” and the family ”gruidae having long legs and a long neck which it extends when flying while derrick is a device that is used for lifting and moving large objects.
What is the purpose of the derrick?
A derrick is either a crane for lifting material or a framework over an oil well that allows the drilling machinery to be raised and lowered. A 17th century English hangman named Derrick led to a gallows being called a derrick.
How do oil rigs stay in place?
They are generally anchored by combinations of chain, wire rope or polyester rope, or both, during drilling and/or production operations, though they can also be kept in place by the use of dynamic positioning. Semi-submersibles can be used in water depths from 60 to 6,000 metres (200 to 20,000 ft).
How many types of Derrick are there?
Oil derricks are manufactured to suit a particular rig operation such as jack-ups, platforms, semi-submersibles, or drill ships. Types of derricks include basket, breast, gin pole, guy and stiffleg.
What is the difference between Derrick and mast?
is that derrick is a device that is used for lifting and moving large objects while mast is a tall, slim post or tower, usually tapering upward, used to support, for example, the sails on a ship, flags, floodlights, or communications equipment such as an aerial, usually supported by guy-wires or mast can be the fruit …
Who invented the oil derrick?
On August 27, 1859, George Bissell and Edwin L. Drake made the first successful use of a drilling rig on a well drilled especially to produce oil, at a site on Oil Creek near Titusville, Pennsylvania.
Why is it called a gin pole?
The gin pole is derived from a gyn, and considered a form of derrick, called a standing derrick or pole derrick, distinguished from sheers (or shear legs) by having a single boom rather than a two-legged one.
What is advantage of crane over Derrick?
Cranes are acceptably safer to operate because of their simplicity, where derrick rigs can be overly complicated in rigging and operation. Cranes can easily service two hatches, or twin hatches in the fore and aft direction because of their 360° slew ability.
Is a derrick a crane?
Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg derrick. … To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a crane.
What is a crane on a ship called?
A crane vessel, crane ship or floating crane is a ship with a crane specialized in lifting heavy loads. … On a sheerleg crane, the crane is fixed and cannot rotate, and the vessel therefore is manoeuvered to place loads.
What does Derick mean?
The name Derick means People Ruler and is of English origin. Derick is a name that’s been used primarily by parents who are considering baby names for boys. English form of the name Derek.
What does the name Derek mean in the Bible?
Derek is a christian boy name and it is an English originated name with multiple meanings. Derek name meaning is first of the people king of nations and the associated lucky number is 7.
Is Derrick a black name?
Derrick has been the more popular spelling among African-Americans and the name has seen quite a bit of success in states where blacks constitute a high percentage of the population (Mississippi, Louisiana, Alabama).