CN103168133A - Ice worthy jack-up drilling unit with moon pool for protected drilling in ice - Google Patents
Ice worthy jack-up drilling unit with moon pool for protected drilling in ice Download PDFInfo
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- CN103168133A CN103168133A CN2011800504385A CN201180050438A CN103168133A CN 103168133 A CN103168133 A CN 103168133A CN 2011800504385 A CN2011800504385 A CN 2011800504385A CN 201180050438 A CN201180050438 A CN 201180050438A CN 103168133 A CN103168133 A CN 103168133A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/0021—Means for protecting offshore constructions against ice-loads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/008—Drilling ice or a formation covered by ice
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
Abstract
The invention relates to an ice worthy jack up rig that may extend the drilling season in shallow water off shore Arctic or ice prone locations. The inventive rig would work like a conventional jack up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the legs are held in place by cans embedded in the sea floor to resist lateral movement of the rig and the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with an ice bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration.
Description
Technical field
The present invention relates to a kind ofly in the packaged type offshore drilling unit (offshore drilling unit) of the typical degree of depth less than the shallow water probing hydrocarbon of 400 feet, often be called " self lift type " drilling unit or offshore boring island.
Background technology
To hydrocarbon forever in continuous seeking, had been found that a lot of oil and gas reserves in the past 150 years.Developed a lot of technology to find new deposit and resource, in order to look for new discovery, tellurian most area is detected.Few people think can also be near the residential community and the place that can be easy to arrive find any large-area, undiscovered resource.Yet, found new large tracts of land deposit in having more challenge and very unattainable zone.
The zone that one prospective is wide is arctic greater coasting area.Yet the arctic is remote and cold, and the ice cube on the water surface has all formed sizable challenge concerning the exploration of hydrocarbon and production.For many years, generally all think in order to find a profitable oil well, must six oil wells that no profits came in of probing.If this situation is true, the probing of people's oil well of wishing all that no profits came in is not expensive so.Yet in the arctic, rarely what is not expensive.
At present, in the shallow water in the place of cold weather as the arctic, self lift type or packaged type offshore drilling unit (MODU) at the shorter water surface of time without using approximately 45 to 90 days the summer of ice (open water).Beginning and the end in prediction probing season are a game of chances, and must pay a lot of effort and when can be drawn to safely drilling position and when can begin probing to determine the self lift type drilling unit.Once you begin probing, completing as soon as possible drilling well is quite urgent thing, to avoid having to interrupt and cancel drilling well owing to having occured to freeze before completing drilling well.Even in several time-of-weeks of the water surface without ice, the position floating ice in place at offshore boring island is also very large for self-elevating drilling platform harm, and the spud leg of self-elevating drilling platform (leg) also is exposed to outer and very easily is damaged.
Self-elevating drilling platform be movably, platform self lift type, that carry out offshore drilling and well maintenance, this platform is equipped with spud leg, this spud leg is arranged to be reduced to the seabed and then shell is risen on the water surface.Self-elevating drilling platform typically comprises probing and/or well maintenance equipment, spud leg jacking system, crewman sitting room, loading and unloading equipment, large-sized liquefied material storage area, helicopter alighting deck and other relevant devices and equipment.
Self-elevating drilling platform is designed to be drawn to situ of drilling well and rises on the water surface, thereby the wave active force of seawater only affects the spud leg with quite little cross section, therefore allows the wave active force in the situation that do not make self-elevating drilling platform that significantly mobile passing by occurs.Yet, the defence capability that the spud leg of self-elevating drilling platform does not almost clash into floating ice, any have the floating ice of certain scale to cause structural destruction and/or offshore boring island is pushed away original position one or more spud legs.Before fixing and waste disposal, this type event having occured if suspend and complete suitably at drillng operation, hydrocarbon may occur so leak.Even the leakage of little risk is all unacceptable completely concerning regulator and the public in oil and natural gas industry.
Therefore, in case determine in shorter season this time after the potential profitable oil well of probing, introduce possibly very large-scale, based on the production system of gravity or similar structure, and they are set in the long-time process of seabed to be used for probing and to produce hydrocarbon.This structure based on gravity is very large-scale and very expensive, can stand ice load the whole year but be constructed to.
Summary of the invention
The present invention relates more specifically to a kind of for be used for the iceproof self-elevating drilling platform (ice worthy jack-up rig) of probing hydrocarbon under the condition that may freeze at greater coasting area, described offshore boring island comprises floating shell, and described floating shell has the deck of the opposed flattened of the section of being located thereon.Described floating shell also comprises along its underpart and ice cube bending shape that extend around the periphery of described shell, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell, and ice cube is folded to section, described ice cube is folded to section and extends around the periphery of the bottom of described shell, to guide ice cube round described shell rather than it is directed under described shell.Described offshore boring island comprises at least three spud legs, within described spud leg is positioned at the periphery of bottom of described floating shell, wherein, described spud leg is arranged to can promote aweigh, thereby make it possible to the towing of described offshore boring island through shallow water area, and described spud leg also can extend to the seabed and further extend with described shell is local or all rise on the water surface.Related with each spud leg from rising device, thereby so that being promoted, described spud leg make aweigh the described iceproof self-elevating drilling platform can be floating by the buoyancy of described shell, also will shift onto in the seabed under described spud leg, and when floating ice threatens described offshore boring island with described shell local lifting on the water surface, and when not having ice cube, described shell is all risen on the water surface.Described offshore boring island also comprises the moon pool (ship trap, moon pool) that is positioned at described deck, within described moon pool is positioned at the periphery of bottom of described shell and described ice cube be folded to the inside of section.
The invention still further relates to a kind of for the method in the waters drilling well of easily freezing, described method comprises: provide a floating shell and an ice cube to be folded to section, described floating shell have the section of being located thereon opposed flattened the deck and along the ice cube bending shape of its underpart, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell, this ice cube is folded to section and extends around the periphery of the bottom of described shell, to guide ice cube round described shell rather than it is directed under described shell.Within at least three spud legs are positioned in the periphery of bottom of described shell.When ice cube does not constitute a threat to for described offshore boring island during the situ of drilling well drilling well at described offshore boring island, fall each spud leg so that the footing on bottom described spud leg engages with the seabed and each spud leg all rises to described shell on the water surface.Further described shell is dropped in water to be in ice cube defence configuration, thereby make described ice cube bending shape on the sea and under extend, so that collide the ice cube bending of described offshore boring island, thereby make described ice cube sink under the water surface, and bear in ice cube the flow through position of described offshore boring island the bending power that ice cube is broken.Described method comprises via drilling in the moon pool in described deck, within wherein said moon pool is positioned at the periphery of bottom of described shell and described ice cube be folded to the inside of section.
Description of drawings
Explanation with reference to carrying out below in conjunction with accompanying drawing can obtain to the present invention and the more complete understanding of advantage of the present invention, wherein:
Fig. 1 is elevation of the present invention, and wherein offshore boring island swims in water, and can be drawn to situ of drilling well;
Fig. 2 is elevation of the present invention, and wherein offshore boring island is thus lifted on the water surface;
Fig. 3 is the elevation for the defence configuration of drilling during potential ice-formation condition of being in of the first embodiment of the present invention, and wherein, offshore boring island has dropped in ice/water interface partly, but still by its spud leg supporting;
Fig. 4 is local amplification front elevation, and it shows an end of the first embodiment of the present invention that is in Fig. 3 configuration, and its medium floe moves in face of this offshore boring island;
Fig. 5 A is elevation, and it shows derrick, and (boring tower derrick) is drilled in a side on deck with the traditional approach of traditional self-elevating drilling platform in cantilever position;
Fig. 5 B is local amplification front elevation, and wherein, moon pool is depicted as and is included in shell, thereby drill string (drilling string) will have benefited from the ice cube defence of iceproof shell configuration;
Fig. 6 A is the top view of the first embodiment of the present invention, and wherein cantilever derrick is positioned to drill via moon pool; And
Fig. 6 B is the top view of the first embodiment of the present invention, and wherein the cantilever derrick lateral margin that is positioned in the deck is drilled.
The specific embodiment
Now then one or more preferred structures of the present invention are arranged be elaborated, should be appreciated that in other structural configuration and also can embody creationary feature and concept, scope of the present invention is not limited to the embodiment that describes or illustrate here.Scope of the present invention is only by the circumscription of following claim.
As shown in Figure 1, the iceproof self-elevating drilling platform is generally by arrow 10 expressions.Self-elevating drilling platform 10 is depicted as its shell 20 and swims in large marine and its spud leg 25 and be in during lift structure arranges in Fig. 1, wherein extends on the deck 21 of major part at shell 20 of spud leg 25 length in this lift structure is arranged.On deck 21 is derrick 30 for drilling well.In structure as shown in Figure 1, self-elevating drilling platform 10 can be drawn to another exploration scene and be drawn to or drag away from the shore base of serving with other seashores for safeguarding from a scene of exploring.
When self-elevating drilling platform 10 was drawn to the situ of drilling well that is arranged in general shallow water, spud leg 25 was fallen via the notch in shell 20 (enclosing well) 27, engages with seabed 15 as shown in Figure 2 until be positioned at the footing 26 of the bottom of spud leg 25.In a preferred embodiment, footing 26 is connected to shoe (spud cans) 28 so that offshore boring island 10 is fixed to the seabed.In case footing 26 engages with seabed 15, the lifting drilling cramp in notch 27 (jacking rig) pushes away spud leg 25 downwards, so shell 20 is thus lifted on the water surface.In the situation that shell 20 fully rises on the water surface, the wave effect that is similar to the so large-scale floating object of shell 20 with shock is compared, and any wave active force and billow are all more easily broken through spud leg 25.
When beginning to freeze on sea 12, for traditional self-elevating drilling platform; the risk that floating ice contacted and damaged spud leg 25 with spud leg 25 or easily self-elevating drilling platform 10 pushed away situ of drilling well becomes a major hidden danger; and when the water surface finishes without ice season, typically need this offshore boring island is moved apart situ of drilling well.Iceproof self-elevating drilling platform 10 of the present invention is designed to that as shown in Figure 3 ice cube is defensive by adopting, configuration that shell is in water is defendd floating ice.In Fig. 3, ice cube trends towards killing the sea and billow, so that sea 12 seems danger is not high, yet the risk factor of marine environment is only changed and do not weakened.
When iceproof self-elevating drilling platform 10 adopted the configuration that this ice cube is defensive, shell is in water, shell 20 was reduced in water contact with water, and still not dropping to shell 20 can begin floating degree.Most of weight of offshore boring island 10 preferably remains on spud leg 25, and the position with opposing floating ice any pressure that may cause with offshore boring island 10 remains on situ of drilling well.Offshore boring island 10 is fallen, thereby makes intilted ice cube bending surface 41 stride across sea 12 or ice/water interface to engage with any floating ice that may touch offshore boring island 10.
The ice cube bending surface 41 that tilts begins to extend downwardly into neck line 44 from the shoulder 42 of the edge that is positioned at deck 26.Ice cube jet deflector (ice deflector) 45 is from neck line 44 to downward-extension.Therefore, when the floating ice shown in 51 touches offshore boring island 10, ice cube bending surface 41 makes the leading edge of floating ice 51 sink under sea 12 and to it and applies sizable bending power, and this sizable bending power makes pack fragment into the ice cube that size is less, that destructive power is less, coefficient of injury is lower.For example, can imagine that the hundreds of foot even may can touch offshore boring island 10 by several miles so large floating ices.If floating ice fragments into longest dimension less than the fritter of 20 feet, so this fritter can be from offshore boring island 10 surrounding processes, and hidden danger is obviously less.
In Fig. 4 A, according to traditional self-elevating drilling platform, cantilever derrick 30 is positioned at a side on deck 20.Naturally, offshore boring island 10 comprises iceproof shell 20, so the system as shown in Fig. 4 A is not complete traditional type.
It should be noted that traditional self-elevating drilling platform does not comprise moon pool.As shown in Figure 4 B, cantilever derrick is provided with moon pool 32, thereby within riser 35 and drill string 36 can be positioned at the periphery of ice cube jet deflector 45, and enjoy the ice cube defence that ice cube bending surface 41 and ice cube jet deflector 45 provide.
Ice cube has the larger compressive strength that is in 4 to 12MPa scopes, but the bending resistance folding endurance is less, and typical flexural strength is in 0.3 to 0.5MPa scope.The power of the floating ice 51 that moves along sea 12 as shown in the figure, makes its leading edge slide under sea 12 and makes section 52 fractures.In the situation that floating ice 51 fragment into such as section 52 and ice cube 53 etc. than small ice floe, trend towards in the situation that do not apply the impact of pack or power was floated offshore boring island 10 and floating around offshore boring island 10 than away minor segment.Preferably, ice cube can not be forced under the evener of bottom of shell 20, and ice cube jet deflector 45 makes ice cube turn to floating around the side of shell 20.If ice cube is thicker, ice cube jet deflector 45 be arranged to than the more precipitous angle in ice cube bending surface 41 to downward-extension, this acts on bending power on floating ice with increase.At ice cube jet deflector 45 places, an ice cube jet deflector is positioned to begin to downward-extension from the evener of the base plate of shell 20.In optional the layout, turn of bilge (turn of bilge) is the evener in the bottom at the place, bottom of ice cube jet deflector 45.
May be applied to power on offshore boring island 10 in order to resist extraly floating ice, the footing 26 of spud leg can be arranged to be connected with the shoe 28 that is placed in the seabed, thereby make when floating ice collision ice cube bends surperficial 41, in fact spud leg 25 will hold down shell 20 and force the floating ice bending and the lifting force of opposing floating ice, the lifting force of this floating ice is in the situation that the extreme side that may lift the close floating ice of offshore boring island 10, and by with the footing 26 of the opposition side of offshore boring island 10 as fulcrum or pivot and offshore boring island 10 is overthrown.Shoe in the seabed becomes known for other application, and footing 26 can comprise that suitable connector disassembles to be connected in shoe and from shoe on request.
May should be noted that: according to the probing just carried out at that time progress, the ice cube defence configuration of shell water that is transformed into as shown in Figure 3 from as shown in Figure 2 traditional open water drilling well configuration may need fairly large planning and adjustment.Although some equipments can adapt to the change of deck 21 height, may need to dismantle or reconstruct other equip to adapt to new high degree apart from seabed 15.
Iceproof self-elevating drilling platform 10 is designed to ice operation as traditional self-elevating drilling platform in the sea in nothing, but also be designed to then again obtain traditional attitude or configuration when the wave active force becomes hidden danger in ice cube is defendd to be placed to water under the position.The possibility that the shape of shell 20 (and intensity of shell 20) provides ice cube to bend and to rupture.
With reference to figure 5A and Fig. 5 B, shell (from top observation time) may have circle or elliptical configuration, thereby embody following shape: no matter the direction of the point of departure of voyage or flight path how, this shape all is conducive to make ice cube and the ice cube section of fracture of the peripheral of offshore boring island 10 to turn to.Ice cube trends towards floating together with ocean current with the wind, and its apoplexy and ocean current are not often linear corresponding, and perhaps some tracks reflect the impact of seawater and air.
Also should be noted that, spud leg 25 and notch 27(are wherein, spud leg 25 is connected to shell 20 by notch 27) all be positioned at the periphery of ice cube jet deflector 45 within, thereby when offshore boring island 10 is in as shown in Figure 3 lower time of ice cube defense attitude configuration (configuration that sometimes is in water also referred to as shell), floating ice unlikely touches spud leg.In addition, offshore boring island 10 needn't be processed each floating ice and threaten, and this has improved the profit of oil and gas company significantly.If offshore boring island 10 can extend short one month with probing season, will be 50% raising so in some zones that easily freeze, therefore make this industry really save cost.
With reference to figure 5A and Fig. 5 B, derrick 30 can be positioned to drill via the moon pool within the periphery that is positioned at ice cube jet deflector 45 as shown in Fig. 5 A, perhaps can be arranged to as shown in Fig. 5 B with cantilevered mode on the deck side of 21 drill.
At last, should be noted that the discussion to any reference is not to admit that it is prior art of the present invention, particularly disclose the reference of date after the application's priority date.Simultaneously, following every and each claim is brought in this detailed description or explanation hereby with as additional embodiment of the present invention.
Although described some systems and processing here in detail, be to be understood that on the basis that does not break away from the spirit and scope of the present invention that limited by following claim and can carry out multiple modification, replacement and change.Those skilled in the art can study preferred embodiment, and recognize with described herein be not duplicate other modes of the present invention that realize.Within being intended that of inventor all brought modification of the present invention and equivalent the scope of claim into, the scope that is not intended to limit the present invention of manual, summary and accompanying drawing simultaneously.The present invention attempts to expand to the same wide in range with following claim and their equivalent especially.
Claims (12)
1. one kind is used for drilling the iceproof self-elevating drilling platform of hydrocarbon at greater coasting area under potential ice-formation condition, and described offshore boring island comprises:
Floating shell, described floating shell has the deck of the opposed flattened of the section of being located thereon, and have along its underpart and around the periphery of described shell downwards and the ice cube bending shape that extends internally, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell;
Ice cube is folded to section, and described ice cube is folded to section and extends around the periphery of the bottom of described shell, to guide ice cube round described shell rather than ice cube is directed under described shell;
At least three spud legs, within described spud leg is positioned at the periphery of bottom of described floating shell, wherein, thereby described spud leg is arranged to promote and is made it possible to aweigh the towing of described offshore boring island through shallow water area, and described spud leg also can extend to the seabed and further extend with described shell is local or all rise on the water surface;
From rising device, described related with each spud leg from rising device, thereby in order to being promoted, described spud leg make aweigh the described iceproof self-elevating drilling platform can be floating by the buoyancy of described shell, also in order to will shift the seabed onto under described spud leg, and when floating ice threatens described offshore boring island with described shell local lifting on the water surface, and all rise to described shell on the water surface when not having ice cube; And
Be positioned at the moon pool on described deck, within described moon pool is positioned at the periphery of bottom of described shell and described ice cube be folded to the inside of section.
2. iceproof self-elevating drilling platform according to claim 1, also comprise anchor mechanism, and described anchor mechanism is related with the footing of each spud leg, is applied to power on described offshore boring island to resist extraly floating ice.
3. iceproof self-elevating drilling platform according to claim 1 and 2, is characterized in that, described ice cube bending surface is from the less neck alignment of size and be tilted out to larger-size shoulder.
4. iceproof self-elevating drilling platform described according to any one in aforementioned claim, is characterized in that, the surperficial in the vertical direction of described ice cube bending extends at least 8 to 10 meters or more.
5. iceproof self-elevating drilling platform according to claim 4, is characterized in that, described ice cube bending surface and vertical direction angulation are in the scope of 30 ° to 60 °.
6. iceproof self-elevating drilling platform described according to any one in aforementioned claim, is characterized in that, surperficial a plurality of opposed flattened, the section that tilt that extends around the periphery of described offshore boring island that comprise of described ice cube bending.
7. iceproof self-elevating drilling platform according to claim 1, is characterized in that, it is reinforced surface that described ice cube bends the surface.
8. method that is used in the waters drilling well of easily freezing, described method comprises:
One offshore boring island is provided, described offshore boring island has floating shell and ice cube is folded to section, described floating shell have the section of being located thereon opposed flattened the deck and along the ice cube bending shape of its underpart, wherein said ice cube bending shape is from the region extension of the close deck level height of described shell and extend downwardly near the bottom of described shell, described ice cube is folded to section and extends around the periphery of the bottom of described shell, to guide ice cube round described shell rather than ice cube is directed under described shell;
Provide at least three spud legs, within described spud leg is positioned at the periphery of bottom of described shell;
Fall each spud leg, so that the footing on bottom described spud leg engages with the seabed, and when ice cube does not constitute a threat to for described offshore boring island during the situ of drilling well drilling well at described offshore boring island, all rise to described shell on the water surface;
Described shell is dropped in water to be in ice cube defence configuration, thereby make described ice cube bending shape on the sea and under extend, so that collide the ice cube bending of described offshore boring island, so that described ice cube sinks under the water surface, and bear in ice cube the flow through position of described offshore boring island the bending power that ice cube is broken; And
Drill via the moon pool in described deck, within wherein said moon pool is positioned at the periphery of bottom of described shell and described ice cube be folded to the inside of section.
9. method according to claim 8, also comprise described spud leg is anchored to the seabed with the step of the power of further opposing floating ice.
10. according to claim 8 or 9 described methods, it is characterized in that, described ice cube bending surface extends to the neck line from shoulder, and described shell is dropped to step in water more specifically comprises described shell being dropped in water so that described neck line is positioned under the sea at least 4 meters and described shoulder and be positioned on the sea at least 7 meters.
11. the described method of any one according to claim 8 to 10 also comprises the step that when the harmfulness of floating ice reduces, described shell is risen on the water surface.
12. one kind is used for the method for drilling in the waters that easily freezes, described method comprises the described offshore boring island of any one in use according to claim 1 to 7.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40549710P | 2010-10-21 | 2010-10-21 | |
| US61/405,497 | 2010-10-21 | ||
| US13/277,791 US20120128426A1 (en) | 2010-10-21 | 2011-10-20 | Ice worthy jack-up drilling unit |
| US13/277,791 | 2011-10-20 | ||
| PCT/US2011/057366 WO2012054883A1 (en) | 2010-10-21 | 2011-10-21 | Ice worthy jack-up drilling unit with moon pool for protected drilling in ice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103168133A true CN103168133A (en) | 2013-06-19 |
Family
ID=46262362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800504385A Pending CN103168133A (en) | 2010-10-21 | 2011-10-21 | Ice worthy jack-up drilling unit with moon pool for protected drilling in ice |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20120128432A1 (en) |
| EP (1) | EP2630302A1 (en) |
| KR (1) | KR20130120460A (en) |
| CN (1) | CN103168133A (en) |
| CA (1) | CA2811943A1 (en) |
| RU (1) | RU2013123031A (en) |
| SG (1) | SG189100A1 (en) |
| WO (1) | WO2012054883A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373449A (en) * | 2016-10-18 | 2017-02-01 | 浙江海洋大学 | Marine engineering test platform device for simulating marine operation working condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2970056B1 (en) * | 2011-01-04 | 2014-02-14 | Technip France | DEVICE FOR PLACING A DRIVE IN A WATER EXTEND, ASSOCIATED STRUCTURE AND METHOD |
| SG2012086682A (en) * | 2012-11-23 | 2014-06-27 | Keppel Offshore & Marine Technology Ct Pte Ltd | Structure-assisted jackup system |
| RU2536726C1 (en) * | 2013-09-26 | 2014-12-27 | Открытое акционерное общество "Центральное конструкторское бюро морской техники "Рубин" | Self-lifting drilling rig |
| KR102600612B1 (en) * | 2016-08-24 | 2023-11-09 | 한화오션 주식회사 | Barrier structure of polar region marine structure |
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| GB2079826A (en) * | 1980-07-09 | 1982-01-27 | Coyne & Bellier | Underwater support structures for platform-carrying tower or towers |
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| US20060051164A1 (en) * | 2004-09-07 | 2006-03-09 | Offshore Technology Development Pte Ltd | Jackup oil rig and similar platforms |
| CN201172814Y (en) * | 2007-12-04 | 2008-12-31 | 中国石油集团海洋工程有限公司 | Shallow sea self-lifting production testing work platform |
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| US4102144A (en) * | 1977-05-31 | 1978-07-25 | Global Marine, Inc. | Method and apparatus for protecting offshore structures against forces from moving ice sheets |
| US4456072A (en) * | 1982-05-03 | 1984-06-26 | Bishop Gilbert H | Ice island structure and drilling method |
| US20080237173A1 (en) * | 2007-03-30 | 2008-10-02 | Remedial (Cyprus) Pcl | Arm assembly and methods of passing a pipe from a first vessel to a second vessel using the arm assembly |
-
2011
- 2011-10-21 CA CA2811943A patent/CA2811943A1/en not_active Abandoned
- 2011-10-21 RU RU2013123031/03A patent/RU2013123031A/en unknown
- 2011-10-21 WO PCT/US2011/057366 patent/WO2012054883A1/en active Application Filing
- 2011-10-21 KR KR1020137009996A patent/KR20130120460A/en not_active Application Discontinuation
- 2011-10-21 EP EP11779047.7A patent/EP2630302A1/en not_active Withdrawn
- 2011-10-21 US US13/279,084 patent/US20120128432A1/en not_active Abandoned
- 2011-10-21 CN CN2011800504385A patent/CN103168133A/en active Pending
- 2011-10-21 SG SG2013022322A patent/SG189100A1/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972199A (en) * | 1972-06-26 | 1976-08-03 | Chevron Research Company | Low adhesional arctic offshore platform |
| US4080796A (en) * | 1976-04-30 | 1978-03-28 | The Offshore Company | Bottom-supported vessel for performing subaqueous operations and method of placing a bottom-supported vessel in position for performing subaqueous operations |
| US4433941A (en) * | 1980-05-12 | 1984-02-28 | Mobil Oil Corporation | Structure for offshore exploitation |
| GB2079826A (en) * | 1980-07-09 | 1982-01-27 | Coyne & Bellier | Underwater support structures for platform-carrying tower or towers |
| US4434741A (en) * | 1982-03-22 | 1984-03-06 | Gulf Canada Limited | Arctic barge drilling unit |
| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| GB2139570A (en) * | 1983-04-28 | 1984-11-14 | George Collingwood Copson | Jack-up rig |
| CN1132535A (en) * | 1993-09-30 | 1996-10-02 | 国际壳牌研究有限公司 | Offshore platform structure and reusable foundation pile sleeve for use with such a structure |
| GB2302355A (en) * | 1995-06-16 | 1997-01-15 | Marine Structure Comsultants | Bottom supporting construction for a leg end of a displaceable jack-up platform |
| US20060051164A1 (en) * | 2004-09-07 | 2006-03-09 | Offshore Technology Development Pte Ltd | Jackup oil rig and similar platforms |
| CN201172814Y (en) * | 2007-12-04 | 2008-12-31 | 中国石油集团海洋工程有限公司 | Shallow sea self-lifting production testing work platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373449A (en) * | 2016-10-18 | 2017-02-01 | 浙江海洋大学 | Marine engineering test platform device for simulating marine operation working condition |
| CN106373449B (en) * | 2016-10-18 | 2019-01-29 | 浙江海洋大学 | A kind of ocean engineering experiment stage apparatus for simulating operation on the sea operating condition |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012054883A1 (en) | 2012-04-26 |
| EP2630302A1 (en) | 2013-08-28 |
| SG189100A1 (en) | 2013-05-31 |
| US20120128432A1 (en) | 2012-05-24 |
| CA2811943A1 (en) | 2012-04-26 |
| KR20130120460A (en) | 2013-11-04 |
| RU2013123031A (en) | 2014-11-27 |
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Application publication date: 20130619 |