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Types of oil drilling equipment

An oil rig is a structure that houses equipment such as the derrick, pipe, drill bits and the cables needed to extract the oil below the earth’s surface. Oil rigs can be offshore drilling in the ocean or land. Although both locations carry large amounts of oil in the oil market, drilling rigs offshore have been under the public eye since the 2010 oil spill off the coast of Louisiana in the Gulf of Mexico.

Forklifts

According to Rigzone, the structures most commonly used mobile offshore drilling, called jackups (elevators), have lower supports. The hull or main deck area is supported by digital strategy consultancy or half-timbered open legs. These units drilled to 350 feet (105 m) deep.

There are two types of drilling equipment used in jackups. One of them, the most recent and used, is the jackup cantilever which has mounted drilling tower on an arm extending from the main deck. These allow drilling with or without platforms.

The other type, the splined or keyway jackup has an opening in the deck with a derrick placed on it. This type of unit can be raised on a smaller and drill through the hull structure.

floats

Other oil rigs are floats or units semisubmersible offshore drilling floating in giant hollow columns or pontoons that when filled with water can dip the rig to the required depth. This type of equipment is normally used to drill exploratory wells (new wells) and can withstand rough seas.

fixed platforms

Stiller permanent structures offshore steel or cement, called fixed platforms, drilling rigs host the opening new development wells. These large units also house crew and equipment and are connected to the ocean floor. Most of these are on the continental shelf to depths of 1700 feet, and because of its ability to directional drilling can bind to numerous wells to a radius of five miles.

Torres demand

Another type of rig offshore demand is the tower consisting of a flexible tower and close with the support of a foundation pile. Its cover operates both conventional drilling and for the production, and this robust unit supports lateral forces, and water diversions from 1500 to 3000 feet deep.

Drillships

Drill ships usually are built hulls tankers have been equipped with devices used in drilling and deepwater drilling experimental. Dynamic positioning systems keep the boat on the well.

Planning Wells

The intentional diversion of a well, comprising many diverse factors which must be taken into account individually. A careful planning is therefore the key to minimize the cost of directional drilling, since proper selection of tools and methods, may result in greater operating efficiency and better economic results.

The objective (zone that the well must penetrate to a given depth), it must be clearly defined. Its shape and size depend usually geological characteristics and location of the producing areas. In the case of a developing field, the drainage radius must also be taken into account. On the other hand, garcinia should not be too small because this will result in a substantial increase in drilling cost.Studies about, shows that the most economical ray objective is given by R = 1 / 12D, where R = target radius and D = lateral displacement.

An analysis of the subsurface must also be made. All geological information subsoil should be taken into consideration.The drilling rig, if possible, should be positioned to take advantage of all the natural tendencies of deviation, which has formations. Knowing that the drill string has the natural tendency of “turning” to the right, i.e., drilling in a curve must design the directional well, so that there is a tolerance of a few degrees to the right, or left of the imaginary horizontal line connecting the lease on the surface, the goal.

Try to go against the natural tendency of the drill, only it brings as a consequence longer drilling and yield less than expected. problems about information found in neighboring wells, such as dog legs, key seats, tortuosity,best pixel gun 3d hack etc. They are also carefully analyzed in the planning of a directional well. coatings and drills programs determine the diameters of the tools used in directional drilling, such as OD of nonmagnetic commands, bent subs, downhole, engines, etc. Although the geology of the field should be considered, it is good practice to lower the surface coating after the build-up and the intermediate coating after the drop-off. It should be borne in mind that in small diameter wells, formations exert a more pronounced effect on steering control; This is due to the fact that the columns of smaller diameter are more flexible, or more susceptible to working imposed by the formations.

As a result, the wells have larger diameters are easier to control, which is more stable with respect to the direction. Finally, in deep and inclined wells, it is common to use rubber pads in the column drill pipes in order to avoid their own wear and the casing string. Control of mud is also very important, especially to reduce drag in directional wells.Friction reducing additives are often used, and both the density and the viscosity of the fluid must be kept in strict control at all times.