A Jacket structure is a welded tubular space frame consisting of vertical or battered legs supported by a lateral bracing system. The function of the jacket is to support the topside facilities, provide supports for conductors, risers, and other appurtenances, and serve as a template for the foundation system.
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What is a drilling jacket?
A drilling jacket is a small steel platform used for drilling wells in shallow and calm water. Drilling jackets are drilling rigs used in shallow water drilling. A drilling jacket platform was used to test new shallow-water drilling technology.
What is offshore and onshore structure?
Offshore structures differ from onshore structures both in terms of their pre-service and in-service characteristics. Offshore structure components are fabricated and assembled onshore, transported to an offshore site and then installed.
What is jacketed platform?
8.6, jacket platforms are one of the most commonly used fixed type of platform, about 95% of the offshore platforms in the world are using jacket platform. The platform is supported by steel space frame which consists of plate girder or deck truss structure supported by welded tubular that is piled to the seafloor.
What is a jacket on an oil rig?
The “substructure” or “jacket” is fabricated from steel welded pipes and is pinned to the sea floor with steel piles, which are driven through piles guides on the outer members of the jacket. The piles are thick steel pipes of 1 to 2 metres diameter and can penetrate as much as 100 m into the sea bed.
What is jacket fabrication?
One jacket fabrication sequence (practiced by many yards) for four-legged structures is to fabricate all legs on temporary supports on the ground. They are placed with distances exactly equal to their distance at each jacket elevation. Braces and horizontal members for the outermost legs are welded.
What is jacket offshore?
Definition. Jacket refers in the oil and gas exploration and production to the steel frame supporting the deck and the topsides in a fixed offshore platform.
What are onshore structures?
Onshore structures are those which are some distance from the sea or basically those which are on land. The reason this aspect of structural engineering is different, is that by the name, it implies more specialist structures on land, asides bridges, buildings and other kinds of general structures.
What are types of offshore structures?
5 most common offshore structures are described below:
- Shallow Water Complex.
- Gravity Base.
- Compliant Towers.
- Floating Production. Floating Production, Storage and Offloading (FPSO) Tension Leg Platform (TLP) SPAR.
- Subsea Production Systems.
What are onshore projects?
Onshore refers to the mainland. In exploration and production, “onshore” refers to the development of oil fields, gas deposits and geothermal energy on land. In the wind energy sector, “onshore wind farms” generate energy with windmills installed on land.
What is a steel jacket platform?
The steel jacket type platform on a pile foundation is the most common kind of offshore structures. The substructure is fabricated from steel welded pipes which are fixed to the sea bed with steel piles, which are driven through piles guides on the outer members of the jacket.
What is a steel jacketed bullet?
A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell (“jacket”) of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy.
What is a wellhead platform?
Wellhead platform generally is a type of oil platform that houses personnel and machineries to extract oil and natural gas through wells in the ocean bed. A wellhead platform (WHP) may include an integrated deck, utility systems, wellhead systems, helideck and drilling facilities.
What are the 7 varieties of offshore platforms?
Meet the 7 different types of oil platforms!
- Fixed.
- Self-elevating.
- Semi-submersible.
- TLWP.
- Drillship.
- FPSO.
- FPSO Monocolumn.
What is a topside in oil and gas?
On an offshore oil platform, topsides refers to the upper half of the structure, above the sea level, outside the splash zone, on which equipment is installed. This includes the oil production plant, the accommodation block and the drilling rig.
What is Platform in oil and gas?
An oil platform, oil rig, offshore platform, or oil and/or gas production platform is a large structure with facilities to extract, and process petroleum and natural gas that lie in rock formations beneath the seabed.
What is the biggest oil rig in the world?
Berkut oil rig
Berkut oil rig
Berkut is the biggest oil and gas platform in the world situated near the Russian coastline facing the Pacific Ocean, near the island of Sakhalin close to the Japanese mainland. It is truly an engineering marvel, weighing about 200,000 tonnes and 35 m deep from the seafloor.
How does a tension leg platform work?
Tension leg platforms (TLPs) are floating platforms that combine the buoyancy forces (generated by displacement resulting from the draft—submerged part of the hull), with the tensile forces generated by tubular cables connected to the hull and anchored on the seabed.
What are the topsides of a boat?
What is the Topside of a Boat? Your boats topsides cover a lot of territory. Working upward from the waterline, the topsides include the boats entire upper hull and deck areas. Technically, the topsides also include the cabin top, the raised portion of the boat above its flush deck.
What are the two types of offshore drilling?
The various types of offshore rigs include barges, submersibles, platforms, jackups, and floaters (the latter of which include semisubmersibles and drill ships).
- Barges. A barge rig is designed to work in shallow water (less than 20 ft6.096 m.
- Submersibles.
- Platforms.
- Jackups.
- Floaters.
- Semisubmersibles.
- Drill ships.
What is FSO vessel?
A vessel used only to store oil (without processing it) is referred to as a floating storage and offloading (FSO) vessel.