Oil rig is one of modern technology in oilfield history. It is used to drill exploration wells to look for oil. And oil rigs are used to drill into an oil field to extract the oil. There are several different types of oil rig and oil rig.
1. Fixed oil rig
This type of oil rig is built on concrete and fixed directly onto the seabed, a wide deck with space for drilling rigs, production facilities and workers facilities. an oil rig is built for long term use. Usually the structure is made of steel , concrete , floating steel or floating concrete. Steel structures are the vertical sections made of tubular steel members, mounded into the seabed. Concrete structuresare for the tanks below the sea surface and these tanks fuction is for flotation capability. This type of oil rig is economically sufficient for water depths up to 520m.
2. Compliant towers oil rig
Compliant tower is fixed oil rig structure. This oil rig has slim compliant towers structures with a foundation for deck drilling operation . It is specially designed to maintain lateral deflection and force. This type of rig structure can be configured to adapt to existing fabrication and installation equipment. This flexibility makes this oil rig can be operated in depper water since, this rig can abbsorb the pressure from the wind and sea.
3. Semi-submersible oil rig
Semi Submersible oil rig is moving oil rig structure. It can be moved from one location to another location. The hulls system of these oil rigs make buoyancy. It makes the structure floating. It's balanced by weight, so the structure keep upright. It can be ballasted up or down by altering the amount of flooding in buoyancy tanks. Semi-submersibles can be used in water depths 180m to more than 10,600 m
Friday, March 20, 2009
Huge Oil Rig Is Floating In The Ocean??
Thursday, March 19, 2009
Oil Rig : Huge Structure in The Middle of Ocean
An offshore oil rig, is a huge structure used for oilfield operation. An oil rig become one of the most important elements needed in oilfield industry. By using this oil rig, oil can be extracted from the layer of the earth and ship them to shore. An oil rig can be fixed to the surface of the earth it's built on the artificial land. Another kind of oil rig is floating rig. All are depends on the situation.
Most oil rigs are still located on the continental shelf, since the cost for the structure cheaper and easier. But today oil companies with their advances in technology build oil rig in the deeper water.A typical oil rig has around thirty wellheads located on the oil rig and directional drilling allows reservoirs to be accessed at both different depths from the oil rig.
The first modern oil rig structure had ever been built is The Thames Sea Forts . It was pre-constructed in a very short time. It's floating oil rig. In 1938 it was placed on the shallow bottom of Thames Estuary. But the period where it is accepted as offshore oil era is in 1947 when Kerr-Mc Gee Company producing oil rig out of sight of land.
An oil rig structure is equipped with many equipments needed for processing oil, transporting oil by pipelines or tanker. The elements including wellhead, manifold, gas compressor,pump and still many things that support production and transportation. An oil rig is equipped also with workers facilities such as housing, electricity generator, water and etc.
The world tallest oil rig can be as tall as an television and radio broadcasting tower. Here are the examples of The tallest oil rig structures
* Petronius oil rig, 610 meters (2,000 ft)
* Baldpate oil rig, 579.1 meters (1,900 ft)
* Bullwinkle oil rig, 529.1 meters (1,736 ft)
The widest oil rig in the world is The Hibernia oil rig located in the Atlantic ocean with 364 feet high and storage capacity 1.3 million barrels.
Read also the article about many different kinds of huge oil rig