A Semi- Submersible Rig, additionally called a Semi-Sub, Semi or Floater, is utilized to discover and also draw out oil and also gas from below the sea flooring. It is utilized for piercing wells in water midsts that are not easily accessible to jack-up gears. Semi-Subs are resilient, unlike the jack-up gears that hinge on the seabed while the last float.
They are chosen over various other choices because they use security in severe problems, supply a bigger deck location, have exceptional installment and also building attributes and also are very mobile.
They can drift when hauled to a setting, and also their pontoons are after that swamped, partly immersing them in water once they get to the location of their procedures. These pontoons additionally supply them with buoyancy, security and also the ability to drift on the water’s surface area.
In this write-up, allow us check out the 10 Biggest Semi-Submersible Rigs
1. The Ocean GreatWhite
In 2016, Hyundai Heavy Industries provided the globe’s biggest semi-submersible boring gear, the Ocean GreatWhite, to the boring specialist Diamond Offshore.
The ultra-deepwater gear is 123 m or 402 feet long and also 78 m or 255 feet vast. It can run in waters approximately 3 kilometres or 10,000 feet deep and also can pierce to 10 kilometres or 6.6 miles from the sea surface area. It has a 23 m draft and also a rate of around 8 knots.
The gear was built to run in severe atmospheres like theNorth Sea It has lodging centers for about 200 individuals and also is furnished with sophisticated tools for managing expedition and also boring procedures in tough atmospheres.
2. Scarabeo 9
Scarabeo 9 is a ‘Frigstad D90-type ultra-deepwater sixth generation semi-submersible drilling rug’ had and also run bySaipem One of the largest gears worldwide, it can operate at a deepness of around 12,000 feet or 3600 m. Its boring deepness is 15,200 m or 49,900 ft.
Scarabeo 9 is 115 m long and also 78 m vast. It has a gross tonnage of 36,863 and also a deadweight tonnage of 23,965. It has 8 Wartsila 12V32 diesel motor and also 2 cranes.
It additionally has living quarters for 200 employees and also a helicopter deck for MI8, S61 and also EH101 helicopters. Scarabeo 9 additionally has a double RamRig and also Dynamic Positioning System.
3. Deepwater Nautilus
This semi-sub was built in 2000 in South Korea byHyundai Heavy Industries It is had by Transocean, is signed up in Vanuatu and also presently running under the Liberian Flag.
The ultra-deepwater semi-sub overseas boring gear is a sixth-generation RBS-8M style. It is column-stabilised and also made to pierce subsea wells for oil expedition and also manufacturing.
Deepwater Nautilus can operate at water midsts of around 8000 feet or 2400 m. It has a boring deepness to 30,000 feet or 9100 m. It is 114 m or 374 feet long and also 78 m or 256 feet wide. It has a draft of 23 m and also has a gross tonnage of 29,051.
In 2000, the gear established a water-depth document for an overseas gear working in a moored setting at 7,785 feet to 2373 m at Alaminos Canyon obstruct 557, in the United States market of the Gulf of Mexico.
Two years later on, the gear located oil at the Shell- run Great White oil area in Alaminos Canyon obstruct 813.
4. Deepsea Aberdeen
Deepsea Aberdeen was built by Daewoo Shipbuilding and also Marine Engineering lawn, South Korea and also was categorized by DNV. It was provided to Odjfell Drilling in 2014.
The gear determines 123 m lengthwise and also 96 m breadthwise. It is a boosted GVA7500 severe atmosphere style and also is Odfjell Drilling’s 3rd gear of the optimised deg. Its sis gears are the Deepsea Atlantic and also Deepsea Stavanger.
It has a very reliable boring system, consisting of a double derrick with a major and also complementary job centre to allow a number of synchronised procedures.
The gear has an optimum boring deepness ability of 40,000 feet or 12,192 m. It can run at water midsts of approximately 10,000 feet or 3048 m.
It was created running worldwide; nevertheless, it appropriates for advancement boring. Deepsea Aberdeen will certainly pierce brand-new wells in the Svalin area in the 4th quarter of 2023 for concerning 174 days.
The gear is currently in Norway and also is running under the flag ofBermuda It has 8 mooring lines and also can fit 157 individuals. The Deepsea Aberdeen has actually run in the North Sea, West Africa and also various other areas.
5. Hercules
Hercules is a sixth generation deepwater and also a severe atmosphere semi-submersible gear. It is a high derrick, flaunting a GVA 7500 style and also is stuffed with a complete traditional mooring spread for running in water midsts of 100-500 m.
Its 5200 mt filling ability enables effectiveness and also much less requirement for supply vessels. It has actually efficiently operated in the Barents Sea throughout the cold winter months and also is tailoring for winterisation course symbols for boosted working problems in a frozen atmosphere.
It was provided to Odjfell Drilling in 2008 by DSME,South Korea It is under the flag of Norway and also is presently benefitingExxon Mobil The gear has 2 Liebherr Bos 4200-80 cranes and also can fit 180 individuals.
It has a lugging ability of 40,000 t DWT and also has a 16 m draft. Hercules has an LOA of 117 m and also a size of about 78 m.
6. Sevan Louisiana
The sixth generation Sevan 650 DP Semi-Sub offshore piercing gear, Sevan Louisiana, was built in 2013 in the COSCONantong Shipyard It was constructed for UK-based Seadrill Limited.
The self-propelled gear is furnished with 8 thrusters and also can fit 150 individuals. It runs under the flag of Panama and also is classified by DNV.
The gear’s lugging ability is 40,000 t DWT, and also her present draft is 12.5 m. Her total LOA is 99 m, and also her size is additionally 99 m.
It works at an optimum water deepness of 3048 m and also has an optimum boring deepness of 10,668 m. It additionally has a helicopter deck and also 2 stand cranes, a pipeline handling crane and also 2 X-Mas Tree cranes with differing lots abilities.
7. Island Innovator
Island Innovator is had by Island Drilling Company AS, which took its distribution from China’s COSCO Zhoushan Shipyard in 2012. The gear utilized for boring and also heavy, well treatment has actually efficiently dug wells because 2013 and also verified its capability to run in severe atmospheres such as the North Sea, Norwegian Sea and also Barents Sea.
It uses a functional benefit over various other gears. It has an NOV 165-ton crane and also NOV 4000 HP ram-rig kind cyndrical tube gear, an NOV BOP managing system and also a 5 ram BOP pile from Cameron.
The gear is constructed for manufacturing boring on subsea design templates with significant locations for storage space and also a skidding system. The updated hull style boosts the deck lots ability.
The gear can run in water midsts from 60m approximately 1200m. It has an 8-line mooring system and also 6 fixed-pitch variable rate thrusters.
8. Atlantic Star
Atlantic Star is a midwater semi-sub boring gear initially integrated in 1976 and also was gotten by Constellation Oil Services in 1997. It was updated in 2011, can pierce at water midsts of approximately 2000 feet, and also has a boring deepness ability of approximately 21,320 ft.
The semi-submersible can fit 110 individuals, per the firm. Atlantic Star gear is of an I.F.P. Neptune Pentagone style.
Constellation is a boring specialist based inBrazil For its overseas solutions, it has 8 overseas gears, 2 semi-submersibles tied to run at a water deepness of approximately 1100 m, 3 vibrant placing gears for running in water midsts approximately 2700 m and also 3 drill ships for running in 3000 m water deepness.
9. Norbe VI
Norbe VI is a semi-submersible boring gear integrated in 2010 by Gulf Piping- Abu Dhabi,United Arab Emirates It is cruising under the flag of Panama and also has a gross tonnage of 15627 tonnes.
It has a lugging ability of 12609 t DWT, and also its present draft is 17.7 m. It determines 200 m lengthwise and also 32 m breadthwise.
This gear, with vibrant placing, can run at a water deepness of approximately 7,874 feet and also can pierce wells up to 24,606 ft.
10. Hai Yang Shi You 981
Hai Yang Shi You 981, additionally called Ocean Oil 981/ Ocean Petroleum 981, is a semi-sub system had and also run by China National Offshore Oil Corporation.
The semi-sub is furnished with Liebherr Cranes and also was made by Friede & & Goldman.
It was integrated in 2011 and also is cruising under theChinese Flag It started running in 2012 in the South China Sea concerning 320 kilometres southeast of Hong Kong at a 1500 m deepness.
Its lugging ability is 20579 t DWT, and also its draft is 13 m. Its total size is 114.07 m, and also it is 89 m vast.
Hai Yang Shi You 981 was made and also constructed separately inChina It considers 30,670 tonnes, and also this system is the globe’s initial gear made for severe atmospheres in theSouth China Sea After ten years of procedures, the gear mosted likely to a shipyard in Shenzen for its first-ever completely dry docking.
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Zahra is an alumna of Miranda House, University ofDelhi She is a passionate author, having spotless study and also modifying abilities. Author of a number of scholastic documents, she has actually additionally functioned as a freelance author, generating numerous technological, imaginative and also advertising and marketing items. A real aesthete in mind, she likes publications a bit greater than anything else.
