CN103180514B - With the iceproof jack up drilling unit of gas stirring and spud leg ice cube protector - Google Patents
With the iceproof jack up drilling unit of gas stirring and spud leg ice cube protector Download PDFInfo
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- CN103180514B CN103180514B CN201180050470.3A CN201180050470A CN103180514B CN 103180514 B CN103180514 B CN 103180514B CN 201180050470 A CN201180050470 A CN 201180050470A CN 103180514 B CN103180514 B CN 103180514B
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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
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
- E02B1/003—Mechanically induced gas or liquid streams in seas, lakes or water-courses for forming weirs or breakwaters; making or keeping water surfaces free from ice, aerating or circulating water, e.g. screens of air-bubbles against sludge formation or salt water entry, pump-assisted water circulation
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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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- 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
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- General Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
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- Earth Drilling (AREA)
- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The present invention relates to a kind of iceproof self-elevating drilling platform, the probing season that this drilling platforms can extend coastal waters, arctic shallow water area or easily freeze in region. At the water surface, during without ice, in the situation that shell is risen on the water surface, drilling platforms of the present invention can be worked as traditional self-elevating drilling platform. But if frozen, spud leg will be held in place by the shoe that is embedded into seabed, to resist the transverse shifting of drilling platforms, and shell is reduced in water with in ice cube defence configuration. This shell forms ice cube bending surface especially, with the ice cube that bending contacts with shell with fracture when in ice cube defence configuration.
Description
Technical field
The present invention relates to a kind ofly drill hydrocarbonize for the shallow water that is less than 400 feet in the typical degree of depthThe packaged type offshore drilling unit (offshore drilling unit) of compound, is often called " jack up " and boresWell unit or drilling platforms.
Background technology
To hydrocarbon forever in continuous seeking, have been found that very in the past 150 yearsMany oil and gas reserves. Develop a lot of technology to find new deposit and resource, new in order to look forDiscovery, tellurian most areas is detected. Few people think can also be in residential areaAny large-area, undiscovered resource is found near place and that can be easy to arrive. But,Find new large area deposit having more in challenge and very unattainable region.
A region having a extensive future is arctic greater coasting area. But the arctic is remote and cold, the water surfaceOn the exploration of ice cube concerning hydrocarbon and production all formed sizable challenge. For many years withCome, 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 all wishing that no profits came in is not expensive so. But,The arctic, rarely what is not expensive.
At present, in the local shallow water of cold weather as the arctic, jack up or packaged type are nearProbing unit, sea (MODU) is passable without the summer of ice (openwater) at the shorter water surface of timeUse approximately 45 to 90 days. Beginning and end that season is drilled in prediction are a game of chances, and mustMust pay a lot of effort with determine jack up drilling unit when can be drawn to safely drilling position andWhen can start probing. 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 occurred to freeze before completing drilling well. EvenIn several time-of-weeks of the water surface without ice, at drilling platforms with regard to bit position floating ice to self-elevating drilling platform andSpeech harm is also very large, and the spud leg of self-elevating drilling platform (leg) is also exposed to outer and is very easily damagedBad.
Self-elevating drilling platform be movably, jack up, carry out offshore drilling and well maintenancePlatform, this platform is equipped with spud leg, and this spud leg is arranged to be reduced to seabed and then shell is risen toOn the water surface. Self-elevating drilling platform typically comprises that probing and/or well maintenance are equipped, spud leg liftingSystem, crewman living room, loading and unloading equipment, large-sized liquefied material storage area, helicopter fallDeck and other relevant devices and equipment fall.
Self-elevating drilling platform is designed to be drawn to situ of drilling well and rises on the water surface, therebyThe wave active force of seawater only affects the spud leg with quite little cross section, therefore allows wave effectPower does not make self-elevating drilling platform occur to pass by the in the situation that of significantly movement. But, jack upThe spud leg of drilling platforms clashes into and almost there is no a defence capability floating ice, and any floating ice that has a certain scale allCan cause structural destruction and/or drilling platforms is pushed away to original position one or more spud legs. If boredWell operations suspends and has completed suitably, before fixing and waste disposal, this type event occurred, and so willHydrocarbon may occur to be leaked. Even this type of leakage of little risk in oil and natural gas industryConcerning regulator and the public, be all unacceptable completely.
Therefore, once after determining and drilling potential profitable oil well in shorter season this time,Introduce possibly production system very large-scale, based on gravity or similar structure, and they are establishedFix on the long time treatment of seabed for probing and production hydrocarbon. These knots based on gravityStructure 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 drilling carbon at greater coasting area under potential ice-formation conditionThe iceproof self-elevating drilling platform (iceworthyjack-uprig) of hydrogen compound, described drilling well is flatPlatform comprises floating shell, and described floating shell has the deck of the opposed flattened of the portion of being located thereon. DescribedFloating shell also comprises along ice cube bending table its underpart and that extend around the periphery of described shellFace, wherein said ice cube bending surface from the region extension of close the deck level height of described shell andExtend downwardly near the bottom of described shell, and an ice cube is folded to portion, the described ice cube portion of being folded to enclosesPeriphery around the bottom of described shell is extended, with round described shell guiding ice cube instead of drawnLead under described shell. Described drilling platforms comprises at least three truss framed legs, and described spud leg is fixedPosition is within the periphery of the bottom of described shell, and wherein, described spud leg is arranged to promote and is left seaThe end, thus described drilling platforms can be pulled through shallow water area, and described spud leg also can prolongReach seabed and further extend with by local described shell or all rise on the water surface, makingDescribed shell can drop in water with in ice cube defence configuration, in this ice cube defence configuration, instituteState shell and be positioned partially in water but still supported by described spud leg, and described ice cube bending surface is on seaOn and under extend. Associated with each spud leg from rising device, so that described spud leg is promoted aweighThereby make buoyancy that described iceproof self-elevating drilling platform can be by described shell and floating, alsoBy under described spud leg, shift seabed onto and in the time that floating ice threatens described drilling platforms by described shell partRise on the water surface, and in the time not there is not ice cube, described shell is all risen on the water surface.Described drilling platforms comprises that spud leg ice cube protector, to make truss framed leg not be subject to the evil of ice cube, also wrapsDraw together gas stirring system, described gas stirring system is included in the hole forming in the shoe that is set in seabedStir near the seawater described spud leg in order to discharge bubble, to prevent forming ice cube on described spud legAnd and slow down near icing problem described spud leg.
The invention still further relates to a kind ofly for the method in the waters drilling well of easily freezing, described method comprises to be carriedFor a drilling platforms, described drilling platforms has floating shell and an ice cube is folded to portion, described Floating boatShell have the portion of being located thereon opposed flattened deck and along the ice cube bending surface of its underpart, whereinDescribed ice cube bending surface is from the region extension of the close deck level height of described shell and to downward-extensionTo near the bottom of described shell, described ice cube is folded to portion and extends around the periphery of the bottom of described shell,To guide ice cube round described shell instead of to be directed under described shell. At least three purlinsWithin posture spud leg is positioned in the periphery of bottom of described shell, wherein each spud leg comprises multiple logicalCross the column of the vertical direction orientation that cross member connects and be arranged between described column for the protection of instituteState cross member and avoid the ice cube protector of the evil of ice cube. Fall each spud leg, to make described spud legFooting on bottom engages with seabed, and works as at described drilling platforms ice during situ of drilling well drilling wellWhen piece does not constitute a threat to for described drilling platforms, described shell is all risen to the water surface by each spud legOn. Further described shell is dropped in water with in ice cube defence configuration, in this ice cube defenceIn configuration, described shell is positioned partially in water but still is supported by described spud leg, and the bending of described ice cubeSurface on sea and under extend so that collide the ice cube bending of described drilling platforms, to makeDescribed ice cube sinks under the water surface, and bears and make ice cube in the flow through position of described drilling platforms of ice cubeThe bending power of breaking. Discharging bubble by the hole via forming in the shoe that is set in seabed stirsNear seawater described spud leg forms ice cube and slows down at described spud leg attached preventing on described spud legNearly icing problem.
Brief description of the drawings
With reference to the explanation of carrying out below in conjunction with accompanying drawing, can obtain the present invention and of the present invention excellentThe understanding that point is more complete, wherein:
Fig. 1 is the front view of the first embodiment of the present invention, and wherein drilling platforms swims in water, andAnd can be drawn to situ of drilling well;
Fig. 2 is the front view of the first embodiment of the present invention, wherein drilling platforms be thus lifted to the water surface itUpper for drilling on open water via moon pool;
Fig. 3 be the first embodiment of the present invention in for drilling during potential ice-formation conditionDefence configuration in front view, wherein, drilling platforms has dropped in ice/water interface partly,But still supported by its spud leg;
Fig. 4 is local amplification front elevation, and it shows the first reality of the present invention in Fig. 3 configurationExecute routine one end, its medium floe just moves in face of this drilling platforms;
Fig. 5 is the top view of the spud leg of drilling platforms, wherein the first embodiment of spud leg ice cube protectorIn place; And
The top view of the spud leg of the drilling platforms that Fig. 6 is, wherein second of spud leg ice cube protector implementsExample is in place.
Detailed description of the invention
Transfer now one or more preferred structures of the present invention to arrange and be elaborated, should manageSeparate, in other structural configuration, also can embody creationary feature and concept, scope of the present inventionBe not limited to the embodiment that describes or illustrate here. Scope of the present invention is only by the scope of following claimLimit.
As shown in Figure 1, iceproof self-elevating drilling platform is represented by arrow 10 generally. At Fig. 1Middle self-elevating drilling platform 10 is depicted as its shell 20 and swims in large marine and its spud leg 25 in promotingIn structural configuration, wherein in this lift structure is arranged the major part of spud leg 25 length at shell 20On deck 21, extend. Is the derrick 30 for drilling well on deck 21. As shown in Figure 1Configuration in, self-elevating drilling platform 10 can be drawn to from an exploration scene another exploration on-the-spot andBe drawn to or drag away from the shore base of serving with other seashores for safeguarding.
In the time that self-elevating drilling platform 10 is drawn to the situ of drilling well that is arranged in general shallow water, spud leg25 fallen via the notch in shell 20 (enclosing well) 27, until be positioned at the bottom of spud leg 25Footing 26 engages with seabed 15 as shown in Figure 2. In a preferred embodiment, footing 26 is connected to stakeBoots (spudcans) 28 are to be fixed to seabed by drilling platforms 10. Once footing 26 and seabed 15Engage, the lifting drilling cramp in notch 27 is fallen spud leg 25, therefore shell 20 be thus lifted to the water surface itOn. In the situation that shell 20 fully rises on the water surface, with shock be similar to shell 20 thisThe wave effect of the large-scale floating object of sample is compared, and any wave active force and billow are all more easily broken throughSpud leg 25. In the time there is no ice cube in region, can start oil well drilling operation under normal circumstances.
By adopting the configuration that ice cube is defensive, shell is in water as shown in Figure 3, of the present inventionIceproof self-elevating drilling platform 10 is designed to defend floating ice. In Fig. 3, ice cube trends towards pressing downWave processed and billow, so that sea 12 seems danger is not high, but, the danger of marine environment because ofSon is only changed and do not weakened. When iceproof self-elevating drilling platform 10 adopts this ice cube defenceWhen configuration that type, shell are in water, shell 20 is reduced in water to contact with water, but does not fallCan start floating degree to shell 20. Most of weight of drilling platforms 10 preferably remains onOn spud leg 25, to resist any pressure that floating ice may cause, the position of drilling platforms 10 is keptOn situ of drilling well. As shown in Figure 4, thus drilling platforms 10 fallen and made intilted ice cubeBending surface 41 stride across sea 12 or ice/water interface with any drilling platforms 10 that may touchFloating ice engages. Ice cube bends extensible at least 8 meters of surperficial 41 in the vertical directions, even may extend toFew 10 meters. Ice cube bending surface 41 can be in the scope of 30 ° to 60 ° with vertical direction angulationIn. Ice cube bending surface 41 can comprise multiple opposed flattened of extending around the periphery of described drilling platforms, tilt section. Ice cube bending surface 41 can be reinforced surface.
The ice cube bending surface 41 tilting extends downwardly into from the shoulder 42 of the edge that is positioned at deck 26Neck line 44. Ice cube is folded to portion 45 from neck line 44 to downward-extension. Therefore, when floating shown in 51When ice touches drilling platforms 10, ice cube bending surface 41 makes the leading edge of floating ice 51 sink to seaUnder 12 and to it, apply sizable bending power, this sizable bending power makes pack disconnectedBe cleaved into that size is less, ice cube that destructive power is less, that coefficient of injury is lower. For example, can imagineEven may can touch drilling platforms 10 by several miles of so large floating ices to hundreds of foot. If floating iceFragment into the fritter that longest dimension is less than 20 feet, so this fritter can be from drilling platforms 10 4All processes, hidden danger is obviously less.
In Fig. 2,3 and 4, the invention provides the first additional ice cube defence feature, wherein, air blast35 are arranged to, via flexible pipe 36, air is blasted into shoe 28 downwards. Shoe 28 comprises hole or diffusionDevice stirs spud leg 25 seawater around to discharge bubble. Thereby the seawater having stirred is stirred and preventsOn spud leg, form ice cube, and form the stream naturally away from spud leg. By means of gas stirring system,While starting to become a kind of hidden danger when freezing, drilling platforms 10 may be remained on to configuration as shown in Figure 2,Instead of start immediately to carry out drilling platforms 10 to become as shown in Figure 3 from transformation of configuration as shown in Figure 2Defence, the step of the configuration of shell in water. If weather forecast hint is potential a period of timeAfter ice-formation condition by be storm and billow words (in these situations as shown in Figure 2 be positioned at horizontal planeOn configuration be preferred), this will be useful so.
Except gas stirring, spud leg ice cube protector 32 is attached between the column 31 of spud leg,To be provided for the of the present invention second additional ice cube defence feature. In Fig. 5, spud leg ice cube protectorThereby 32 are bent to provide a round-shaped spud leg any ice cube around that makes to turn to. In Fig. 6,Spud leg ice cube protector 33 is relatively flat. As shown in Fig. 2,3 and 4, spud leg ice cube protector 32Or 33 be preferably positioned on spud leg with on water line, under and extend through water line, butIt is the whole vertical extension that there is no need to cover each spud leg 25.
Ice cube has the larger compressive strength within the scope of 4 to 12MPa, but bending resistance folding enduranceLittle, typical bending strength in 0.3 to 0.5MPa. As shown in the figure, along sea 12The power of mobile floating ice 51 makes its leading edge under sea 12, slide and section 52 is ruptured.In the case of floating ice 51 fragment into such as section 52 and ice cube 53 etc. compared with small ice floe, compared with communitySection trends towards floating impact in the case of not applying pack or power drilling platforms 10 and is boringThe surrounding of platform shaft 10 is floating. Preferably, ice cube is not forced into the evener of the bottom of shell 20Under, ice cube is folded to portion 45 turns to floating around the side at shell 20 ice cube. If ice cubeThicker, ice cube is folded to portion 45 and is arranged to the angle more precipitous than ice cube bending surface 41 downwardExtend, increase is acted on the bending power on floating ice by this. Be folded to 45 places of portion at ice cube, an ice cube is folded toPortion is positioned to from the evener of the bottom of shell 20 to downward-extension. In optional structural configuration, the turn of the bilgeKnee (turnofbilge) is the evener that is folded to the bottom at the bottom place of portion 45 at ice cube.
May be applied to the power on drilling platforms 10 in order to resist extraly floating ice, the footing 26 of spud legCan be arranged to be connected with the shoe 28 that is set in seabed, thereby make when floating ice collision ice cube bending tableWhen face 41, in fact spud leg 25 will hold down shell 20 and force floating ice bending and opposing floating iceLifting force, the lifting force of this floating ice may lift the close floating ice of drilling platforms 10 extreme in the situation thatA side and by the footing 26 using the opposition side of drilling platforms 10 as fulcrum or pivot incite somebody to actionDrilling platforms is overthrown. Shoe in seabed becomes known for other application, and it is suitable that footing 26 can compriseConnector is to be connected in shoe and from shoe and to disassemble on request.
May should be noted that: according to the probing progress of just carrying out at that time, from tradition as shown in Figure 2The shell that open water drilling well configuration is transformed into as shown in Figure 3 may need at water medium floe defence configurationFairly large planning and adjustment. Although some equipments can adapt to the change of deck 21 height,Also other equip to adapt to the new high degree apart from seabed 15 to need dismounting or reconstruct.
Iceproof self-elevating drilling platform 10 is designed in without ice sea as traditional jack up drilling wellThe same operation of platform, but be also designed to be placed in water under ice cube defence position, then work as waveWhen becoming hidden danger, again obtains active force traditional attitude or configuration. Shape (and the shell of shell 2020 intensity) possibility of ice cube bending and fracture is provided.
Shell 20 preferably has multiaspect or polygon shape, and it is circular or oval that such shape providesThe advantage of shape, and may construct more at an easy rate. The plate that forms shell may be formed by flat board, therebyTotal comprises the section of planarizing material such as steel, may need low complex degree. Recognize horizontal planeCan rise and decline along with moving back flood tide and storm and other possible factors, ice cube bending surface preferablyExtend on horizontal plane at least 5 meters. Height on horizontal plane can adapt to quite thick or toolHave the prominent floating ice of ridge extending to fully on sea 12, but because the height of shoulder 42 is abundantGround is positioned on sea 12, so high floating ice will be forced in the time that they touch drilling platforms 10Under. Meanwhile, the deck 21 that is positioned at the top of shell 20 should be enough far away apart from water line, thus rippleWave can not be flushed to deck. So, deck 21 is preferably located on sea 12 at least 7 meters evenAt least 8 meters; More preferably, shoulder 42 is positioned on sea 12 at least 7 meters. On the contrary, neck line44 be preferably located under sea 12 at least 4 meters even at least 8 meters to bend floating ice fully so thatFragment into without harm ice cube. Therefore, the evener from base plate of shell 20 is to deck 21Highly preferably in the scope of 5 to 16 meters, more preferably, in the scope of 8 to 16 metersIn or in the scope of 11 to 16 meters.
Also should be noted that (wherein, spud leg 25 is connected to by notch 27 for spud leg 25 and notch 27Shell 20) be all positioned at the periphery that ice cube is folded to portion 45 within, thereby when drilling platforms 10 in as figureLower time of ice cube defense attitude configuration (configuration being sometimes in water also referred to as shell) shown in 3, floatingIce unlikely touches spud leg. In addition, drilling platforms 10 need not be processed each floating ice and threaten, thisImprove significantly the profit of oil and gas company. If drilling platforms 10 can extend probing seasonShort one month, so in some regions that easily freeze by the raising that is 50%, therefore make this industryReally save cost.
Finally, should be noted that to the discussion of any reference to be not to admit that it is of the present invention existingTechnology, the particularly publication date reference after the application's priority date. Meanwhile, belowEvery and each claim hereby bring in this detailed description or explanation using as of the present invention attachedAdd embodiment.
Although described some systems and processing here in detail, be to be understood that do not depart from byOn the basis of the spirit and scope of the present invention that following claim limits, can carry out multiple repairingChange, replace and change. Those skilled in the art can study preferred embodiment, and recognize withHerein, be not duplicate other modes of the present invention that realize. Inventor is intended that basisWithin the modification of invention and equivalent are all brought the scope of claim into, description, summary simultaneouslyThe scope being not intended to limit the present invention with accompanying drawing. The present invention attempts to expand to and following power especiallyProfit requires the same wide in range with their equivalent.
Claims (12)
1. one kind for drilling the anti-ice of hydrocarbon under potential ice-formation condition at greater coasting areaType self-elevating drilling platform, described drilling platforms comprises:
Floating shell (20), described floating shell has the deck (21) of the opposed flattened of the portion of being located thereon,And have along its underpart and around the periphery of described shell downwards and the ice cube extending internally bendingSurface (41), wherein said ice cube bending surface is from the district of the close deck level height of described shellTerritory is extended and is extended downwardly near the bottom of described shell;
Ice cube is folded to portion (45), and described ice cube is folded to portion and extends around the periphery of the bottom of described shell,To guide ice cube round described shell instead of ice cube be directed under described shell;
At least three truss framed legs (25), described spud leg is positioned at the bottom of described floating shellWithin periphery, wherein, thereby be arranged to promote aweigh can be by described drilling well for described spud legPlatform towing is through shallow water area, and described spud leg also can extend to seabed and further extendWith by local described shell or all rise on the water surface, make described shell can drop in water withIn ice cube defence configuration, in this ice cube defence configuration, described shell be positioned partially in water butStill supported by described spud leg, and described ice cube bending surface on sea and under extend;
From rising device, described associated with each spud leg from rising device, to described spud leg is promoted and is leftThereby seabed can be floated by the buoyancy of described shell described iceproof self-elevating drilling platformFloating, also to will shift seabed onto under described spud leg, and will in the time that floating ice threatens described drilling platformsDescribed shell local lifting, on the water surface, and all promotes described shell in the time not there is not ice cubeOn the water surface;
Spud leg ice cube protector (32,33), described spud leg ice cube protector is arranged so that described purlinPosture spud leg is avoided the impact of ice cube; And
Gas stirring system, described gas stirring system is included in the shoe (28) that is set in seabedNear the seawater described spud leg is stirred in order to discharge bubble in the hole forming, to prevent on described spud legForm ice cube and slow down near problem icing described spud leg.
2. iceproof self-elevating drilling platform according to claim 1, is characterized in that, instituteState truss framed leg and comprise column and the cross member that is connected described column, described spud leg ice cube protectorBe positioned between described column to protect described cross member.
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 according to claim 1 and 2, is characterized in that,Described ice cube bends surperficial in the vertical direction and extends at least 8 meters.
5. iceproof self-elevating drilling platform according to claim 4, is characterized in that, instituteState ice cube bending surface and vertical direction angulation in the scope of 30 ° to 60 °.
6. iceproof self-elevating drilling platform according to claim 1 and 2, is characterized in that,Described ice cube bending surface comprise multiple opposed flattened of extending around the periphery of described drilling platforms,The section tilting.
7. iceproof self-elevating drilling platform according to claim 1 and 2, is characterized in that,Described ice cube bending surface is reinforced surface.
8. the method for drilling in the waters that easily freezes, described method comprises:
One drilling platforms (10) is provided, and described drilling platforms has floating shell (20) and ice cube foldingTo portion (45), described floating shell has deck (21) and the edge of the opposed flattened of the portion of being located thereonThe ice cube bending surface (41) of its underpart, wherein said ice cube bending surface leaning on from described shellThe region of nearly deck level height is extended and is extended downwardly near the bottom of described shell described ice cubeThe portion that is folded to extends around the periphery of the bottom of described shell, to guide ice cube round described shell notThat ice cube is directed under described shell;
At least three truss framed legs (25) are provided, and described spud leg is positioned at the bottom of described shellWithin periphery, wherein, each spud leg comprises the vertical of multiple orientations vertically that connect by cross memberPost, and spud leg ice cube protector is arranged between described column to make described cross member avoid iceThe impact of piece;
Fall each spud leg, so that the footing on described spud leg bottom is engaged with seabed, and work asDescribed drilling platforms is not when during situ of drilling well drilling well, ice cube constitutes a threat to for described drilling platforms,Described shell is all risen on the water surface;
Described shell is dropped in water with in ice cube defence configuration, in this ice cube defence configuration,Described shell is positioned partially in water but still is supported by described spud leg, and described ice cube bending surface is in seaOn face and under extend so that collide the ice cube bending of described drilling platforms, to make described icePiece sinks under the water surface, and bears ice cube is broken in the flow through position of described drilling platforms of ice cubeBending power; And
By via discharging described in bubble stirs being set in the upper hole forming of the shoe in seabed (28)Near seawater spud leg forms ice cube and slows down near described spud leg and tie preventing on described spud legThe problem of ice.
9. method according to claim 8, also comprises described spud leg is anchored to seabed to enterThe step of the power of one step opposing floating ice.
10. method according to claim 8 or claim 9, is characterized in that, described ice cube bending tableFace extends to neck line from shoulder, and the step that described shell is dropped in water more specifically comprises instituteStating shell drops in water to make described neck line be positioned under sea at least 4 meters and described shoulder and is positioned at seaOn face at least 7 meters.
11. methods according to claim 8 or claim 9, also comprise in the time that the harmfulness of floating ice reducesDescribed shell is risen to the step on the water surface.
12. 1 kinds of methods for drilling in the waters that easily freezes, described method comprises use rootAccording to the drilling platforms described in any one in 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 | 2011-10-20 | ||
| US13/277,791 US20120128426A1 (en) | 2010-10-21 | 2011-10-20 | Ice worthy jack-up drilling unit |
| PCT/US2011/057324 WO2012054855A1 (en) | 2010-10-21 | 2011-10-21 | Ice worthy jack-up drilling unit with gas agitation and leg ice shields |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103180514A CN103180514A (en) | 2013-06-26 |
| CN103180514B true CN103180514B (en) | 2016-05-18 |
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ID=48222547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180050470.3A Expired - Fee Related CN103180514B (en) | 2010-10-21 | 2011-10-21 | With the iceproof jack up drilling unit of gas stirring and spud leg ice cube protector |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2630305B1 (en) |
| KR (1) | KR20130120462A (en) |
| CN (1) | CN103180514B (en) |
| CA (1) | CA2812596C (en) |
| RU (1) | RU2573372C2 (en) |
| SG (1) | SG189102A1 (en) |
| WO (1) | WO2012054855A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485318B (en) * | 2013-09-23 | 2015-10-21 | 浙江海洋学院 | A kind of spud leg deicer |
| CN104975592A (en) * | 2015-06-30 | 2015-10-14 | 武汉船用机械有限责任公司 | Truss type pile leg |
| CN113216122B (en) * | 2021-06-16 | 2022-07-01 | 江苏科技大学 | Drilling platform suitable for polar region |
| EP4311758A1 (en) * | 2022-07-26 | 2024-01-31 | Natale Viscomi | System for maneuvering ships in icy waters |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7705518A (en) * | 1977-05-18 | 1978-11-21 | Rijn Schelde Verolme Maschf En | Deicing equipment for vulnerable components on offshore installations - comprises automatically inflatable and deflatable flexible bodies secured detachably |
| US4578000A (en) * | 1982-06-15 | 1986-03-25 | Oy Wartsila Ab | Method of protection |
| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| 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 |
| US5807028A (en) * | 1995-06-16 | 1998-09-15 | Marine Structure Consultants (Msc) B.V. | Bottom supporting construction for a leg end of a displaceable jack-up platform |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080240863A1 (en) * | 2007-03-30 | 2008-10-02 | Remdial (Cyprus) Pcl | Elevating support vessel and methods thereof |
-
2011
- 2011-10-21 CA CA2812596A patent/CA2812596C/en not_active Expired - Fee Related
- 2011-10-21 CN CN201180050470.3A patent/CN103180514B/en not_active Expired - Fee Related
- 2011-10-21 RU RU2013123024/13A patent/RU2573372C2/en not_active IP Right Cessation
- 2011-10-21 KR KR1020137010000A patent/KR20130120462A/en not_active Application Discontinuation
- 2011-10-21 WO PCT/US2011/057324 patent/WO2012054855A1/en active Application Filing
- 2011-10-21 SG SG2013022348A patent/SG189102A1/en unknown
- 2011-10-21 EP EP11782697.4A patent/EP2630305B1/en not_active Not-in-force
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7705518A (en) * | 1977-05-18 | 1978-11-21 | Rijn Schelde Verolme Maschf En | Deicing equipment for vulnerable components on offshore installations - comprises automatically inflatable and deflatable flexible bodies secured detachably |
| US4578000A (en) * | 1982-06-15 | 1986-03-25 | Oy Wartsila Ab | Method of protection |
| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| 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 |
| US5807028A (en) * | 1995-06-16 | 1998-09-15 | Marine Structure Consultants (Msc) B.V. | Bottom supporting construction for a leg end of a displaceable jack-up platform |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2630305B1 (en) | 2015-07-22 |
| WO2012054855A1 (en) | 2012-04-26 |
| EP2630305A1 (en) | 2013-08-28 |
| RU2573372C2 (en) | 2016-01-20 |
| KR20130120462A (en) | 2013-11-04 |
| SG189102A1 (en) | 2013-05-31 |
| CA2812596A1 (en) | 2012-04-26 |
| CN103180514A (en) | 2013-06-26 |
| RU2013123024A (en) | 2014-11-27 |
| CA2812596C (en) | 2015-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20161021 |