What is an Oil Derrick?

The derrick is used to place cranes, suspend cranes, hooks, rings, elevators and other equipment, and to lift and store drill pipes, tubing and sucker rods during drilling or workover ^[1] . The derrick is composed of a main body, a crane platform, a crane platform, a two-story platform, a riser platform and a working ladder. According to the main features of the overall structure, the rig derrick can be divided into four basic types: tower derrick, front open derrick, A-type derrick and mast derrick. The entry details the derrick's composition, characteristics, model, classification, use, derrick load, basic parameters of the derrick, etc.

In the process of drilling or workover, the derrick is used to place cranes, suspension cranes, hooks, rings, elevators and other equipment, as well as devices for lifting, storing, and storing drill rods, tubing, and sucker rods.

Various derricks used in oil mines are mainly composed of the following parts ^[3]

(1) The derrick complies with the APISpec 4F specification, allowing the use of API monograms ^[4]

Model: JJ170 / 43-K JJ225 / 43-K1 JJ225 / 43-K2 JJ225 / 44-K JJ315 / 43-K JJ315 / 45-K1 JJ315 / 45-K2 JJ450 / 45-K1
Maximum static load: KN 1700 2250 2250 2250 4500 ^[5]

Overall structure type According to the main features of the overall structure, the rig derrick can be divided into four basic types: tower derrick, front open derrick, A type derrick and mast derrick.

The basic parameters that indicate the main characteristics of the derrick are related to lifting operations.

Hallen Derrick Hallen

Boom uses bellow parts that are shaped like "Y" mast connections or bipods and it is the only derricking derrick. In the cross tree, the two-person plough fastened the swivel outrigger using vertical and horizontally stayed ploughs. In order you maintain a good control angle between people and derricks, outriggers cannot pass through the centerline of the cabin parallel. Looking at the illustration, you can easily see that the right of the outrigger stays on the centerline, and the left side has moved outboard to the outrigger. This derrick will lower or pull two people to plow to change direction or drag position. Three winches, controlled by joysticks, plough as necessary to operate Hallen derrick; two will be human and you will be purchase. You should avoid using over or under swing limit switch ploughs. However, the limits can be modified if additional work creaks or special vertical loading is required. Disembarasses workload (SWL) Hallen is between 10 and 80 tons. In the universal Hallen derrick, there is in the Hallen D frame, the halyard has an extended length as it runs through the centerline to further blocks. The universal Hallen derrick, which replaces the D-frame option, is a bit of a traditional top lift. The Hallen D frame is a steel bracket welded on the mast on the centerline. He will be standing upright to the observer, the frame has a "D" -shape. D-frame superheadquarters outriggers and provide good control angles in people. Hallen derricks have a good purpose to come. Containers, logs, steel rails, sawn to timber and heavy thrust and will not be on their own will be small, general positions. It keeps the deck clear to the ropes and preventors. Only one winchman is needed, and is led into use within the few you drafted Hallen. It is less expensive than a crane. The disadvantage is the low working creak of Hallen derrick, it can swing you 75 ° from the centerline and can work against the list you 15 °.

Velle Derrick Velle

The Velle Derrick is abandoned similar to your Hallen, but has no use for outriggers. On top of the boom is a T-shaped yoke assembled. And here, the people serving will be topping and lowering the boom, but they are on sledges fastened by yoke with four shorts, steel wire hanger rope. The end of the top and the end of the halyard secure you half of the barrel on a winch plough. This way you move the same speed winch to change the direction of the top of the halyard and drag the boom at the end of the lanyard, and the vice turns. The spin on your end plough also wounds the other half of the barrel. Will hoist position, there is a third winch where you hoist your position on the yoke. The runner reduces the swing and rotation of the position. The dual joystick controller operates the Velle derrick.

Stülcken Derrick Stülcken

The use of a patented Stülcken derrick would be a very heavy location. It originated from the German shipyard Blohm + Voss GmbH. This derrick can handle you up to 300 tons. Stülcken can be made ready for you to draft, which is all faster than traditional heavier derricks, which does not require much space and a few operated by four winches. Between the two V-shaped, unstayed Samson posts were acquired by Stülcken. This makes it possible for you to let the derrick pass you to a post that reaches another hatch. Posts will be each of a hoist winch, a span winch and a lever operated by only one person. Bearings, swivels, sheaves and goosenecks can be unattended that will rise you for four years and create only about 2% of friction. Spacing should be independent of the plough, and the halyards are endless. With it taking ten you have drafted a swinging suspended suspension all the way to the post head. In the double pendulum block type, half the position of the tackle can anchor the base of your boom. Upon ordering you double hook speed, the halyard passes through the purchase because reducing SWL you is secured at one end of its half. Typical dimensions of 275 ton Stülcken plough: 25,5 m length, 0,97 m to diameter, 1,5 m you 3,4 m to post diameter, 18 m individual post (to upper end), and 8,4 m individual post (To the end). The fully loaded 275 ton Stülcken can hook moves 2,3 m to each draft. If only one purchase is secured and the derrick gains speed with a hook you load 4,6 m to 137 tons per min. The speed of life can be increased when the winch ratio ploughing has reduced you by 100 tons (three times the speed) and 68 tons (four times the speed). Separating the double pendulum block type of the integrated watchmaking Stülcken allows you to lower the swings you can swing freely on each side of your boom. In this way, the derrick reaches the vertical position. Bullrope easily pulls the derrick to the other side until the weight of the position tips the derrick pair. The pitch tackle now has weight to the other sides. The integrated table is repaired again and the derrick can begin its work to the other side. There are also ploughed Stülcken with single pendulum blocks. In this type position the hook is separated and lowered and to the upper fixed block plough is dragged into the centre of Stülcken. You tip over the derrick to use it again in gravity.