CN106460352A - Modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations - Google Patents
Modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations Download PDFInfo
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- CN106460352A CN106460352A CN201480079653.1A CN201480079653A CN106460352A CN 106460352 A CN106460352 A CN 106460352A CN 201480079653 A CN201480079653 A CN 201480079653A CN 106460352 A CN106460352 A CN 106460352A
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- 230000002093 peripheral effect Effects 0.000 title claims abstract description 29
- 238000005553 drilling Methods 0.000 description 15
- 239000002689 soil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 5
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- 230000015572 biosynthetic process Effects 0.000 description 4
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 4
- 230000036316 preload Effects 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 208000000058 Anaplasia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Classifications
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
-
- 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
-
- 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
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions
-
- 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
-
- 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
A modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations comprises a spudcan top part, a spudcan bottom part, wherein the spudcan bottom has a central tip protruding from the central part of the spudcan bottom; wherein the top and bottom parts are coupled at their peripherals or through a spudcan side wall to form a hull structure, and a peripheral skirt having an upper end being coupled to the spudcan bottom part and a lower end extending downwardly, wherein the tip of the lower end of the peripheral skirt is higher than the distal end of the central tip.
Description
Technical field
The present invention relates to a kind of to strengthen performance for jack-up unit operation there is the modification of most preferably peripheral skirt after
Spud can.
Background technology
Self-elevating drilling platform widely uses in the marine surveys for drilling well and natural gas/oil manufacture.With right
The increase in demand of the energy, marine surveys are more and more near the place that there are various danger.Therefore, self-elevating drilling platform
Opereating specification is extremely critical for its performance.
Self-elevating drilling platform generally includes the floatability hull with deck or work platformses, and three or four stakes
The bottom of lower limb, wherein spud leg and footing couple, to provide support for hull in lifting situation.Reach in self-elevating drilling platform
After position, spud leg reduces until the following sea bed of footing contact and is shelved on sea bed soil.Subsequently, carry out preload, with
Simulation expection vertical footing load during design storm, and guarantee test is carried out to foundation soil.During preload, will
Jack-up unit is lifted at the minimum clearance of side waterborne, and ballast water is added in hull with by more gravity loads
It is applied on footing.Footing will keep penetrating sea bed, until bearing capacity of soil can be equal to the preload that footing is applied.?
After realizing stably penetrating, remove ballast water, then using jacking system, hull can be raised, thus work platformses are increased to
Side waterborne, this enables self-elevating drilling platform to be applied with the environmental condition of extra load on jack-up unit to carry out
Safety operation.
The spud leg of self-elevating drilling platform is usually tubing string or truss, each truss leg include with general on the diagonal
The vertical web member that the cross-bridging disposing connects.Terminate in jack-up unit footing typically on being shelved on sea bed for the spud leg.Footing
There is provided the loaded area amplified, to provide enough bearing capacitys and to reduce the pressure being applied on sea bed soil.Thus, it
Reduce the penetration depth of the spud leg required for base supports self-elevating drilling platform, this allows self-elevating drilling platform more
Plant in position and soil types and operate, it has operational spud leg length.
Modern self-elevating drilling platform is generally equipped with single footing, and described footing is frequently referred to as " spud can ", its
It is connected to each spud leg of self-elevating drilling platform.This allow to need on uneven sea bed or slope or wherein with respect to
Another spud leg supports self-elevating drilling platform in the case of adjusting the elevation of each spud leg respectively.As shown in figure 1, traditional footing
Case 10 generally has the generally conical first half 11 being connected to spud leg A and the generally conical lower half for contacting sea bed
Portion or base 12, the wherein first half of cone and lower half are generally at their periphery or direct by spud can side wall 13
Couple.Conical base contributes to guaranteeing necessarily penetrating in sea bed, even in pan soil earth, to provide spud leg to sea
Certain grappling in bed.As the replacement scheme of cone shape, the first half and lower half also can be by three or more than three inclinations
Plate is constituted.Spud can 10 further includes central tip or stopper 14 at the bottom of lower half 12.Central tip or plug
Son 14 is designed to provide the shear connector for penetrating in soft rock or pan soil earth.Cone or the bottom tilting, rather than flat
Smooth base, the strong point in the case of contributing to guaranteeing to be partly embedded in the not exclusively flat sea bed of expection is as concentric as possible.
During spud can lands, when spud can penetrates sea bed, central tip and conical lower section are vertically and laterally
The resistance all experience being gradually increased on direction.Because being gradually increased of resistance allows to penetrate in soil to a greater degree, institute
Be conducive to increasing the ability of soil absorption energy with this, and larger counteracting force will not be generated.In addition, entering one with spud can
Step penetrates, and has transferred extra vessel buoyancy, and this provides the additional source of energizing quantity dissipation, and further reduces institute's warp
The peak impact power gone through.Although it can carry out firm installation, traditional spud can may not in tight sand or pan soil
Maximum stationarity (amount of the rotation condition being provided by spud can) can be provided, because the property of conical lower section and jack up are put down
The finite quantity of the preload that platform can apply.In the case it is impossible to utilize the entire diameter of spud can completely, and part contact
Cause stationarity much lower.
Skirt type spud can is generally used for increasing bearing capacity, and therefore compared to traditional spud can (not having skirt),
Increased the stationarity in tight sand.Skirt provides " embedding " effect effectively, and described " embedding " effect may have been passed through to compel
Make the spud can based on plane (not having skirt) enter to realize with skirt depth identical penetration of wedged gauge.As shown in Figure 2, have
The spud can having typical skirt 20 is similar to such traditional spud can：The conical first half 21 is connected to spud leg A, lower half
There is single tilting bottom or double tilting bottom 22, spud can side wall 23 and be simultaneously connected with two half-unit 21,22, and central tip or
Stopper 24 is added with peripheral skirt 25 and internal skirt 26.For circular spud can, if in lower half by multiple inclinations
When plate shape becomes, spud can bottom has cone shape, or its height is change, then skirt height can around the periphery of whole
For uniform.But, the lowest tip point of normal skirt be usually less than central tip minimum point or at least with central tip
Minimum point flushes.
Although it has increases fixed advantage under sandy seabed conditions, when jack-up unit runs into soft sea bed
Or during hard sea bed, relatively long skirt can produce problem.For example, in soft sea bed, relatively long skirt can form spud leg
, because there is the increased frictional resistance on skirt surface and suction in extracting problem.Additionally, having relatively long skirt
Spud can is not suitable for hard sea bed or rock sea bed.When skirt runs into hard formation, and spud can base is not carried out with sea bed enough
Contact when, skirt tip has actually become the strong point.This will apply high stress, and potentially damages skirt.Additionally,
Unless hard sea bed is completely flat, otherwise peripheral skirt tip only partly can contact hard formation, and this produces eccentric negative on spud can
Carry.This situation is not desired, because the bending moment being produced by the accentric support in spud can level can be on spud leg
Apply sizable primary stress, even in bearing the static conditions before design storm.
Another potential defect with the spud can of relatively long skirt may alternatively appear at extremely hard or batt
During reducing the spud leg of jack-up unit.The rolling of jack-up unit or pitching motion will also result in the vertical of spud can and water
Translation is made, because it can impact sea bed.Compared to traditional spud can with conical lower section and central tip, skirt meeting
Attract much bigger horizontal resistance.Because skirt type spud can is when impacting and penetrating sea bed, its laterally projecting width is constant
, so the horizontal resistance of gained becomes larger.Horizontal resistance then becomes for the control using spud leg retention system ability
Aspect processed.When impacting on rock sea bed, skirt is also possible to damage.
In order to increase the stability of spud can under specific edaphic condition, lucky treasured (Keppel) has revealed that including in skirt
There is at the first half spud can (PCT application, PCT/SG2012/000075) of the skirt of the prolongation of opening.The skirt extending
Most advanced and sophisticated lower than the tip of bottom centre projection (that is, longer).Such spud can has and is particularly overlying the soft viscous of hard formation
The advantage installed in soil, because it allows the soil being detained to pass through the side opening on skirt to flow away, and guarantees enough skirts
Seat is embedding in hard formation.However, for other edaphic conditions, this concept is not preferable solution, and relatively
Longer skirt can limit the performance of jack-up unit.
Content of the invention
It is an aspect of the invention to provide a kind of to strengthen performance for jack-up unit operation has optimal periphery
The amended spud can of skirt.
In one embodiment, the spud can with most preferably peripheral skirt includes spud can top section, spud can bottom
Part, wherein spud can bottom have the central tip that the core from spud can bottom projects；Wherein top section and bottom
Portion's part couples to form Ship Structure at their periphery, and peripheral skirt, and it has and is couple to spud can base portion
The upper end divided and the lower end extending down, the tip of the lower end of wherein peripheral skirt is higher than the remote of central tip
Side end.
In another embodiment, spud can further includes to be placed in spud can top section and spud can base portion divides it
Between spud can side wall to connect spud can top section and spud can base section, thus forming Ship Structure.
In another embodiment, top section has flat surfaces, conical or multiple clinoplain configuration.In another reality
Apply in example, base section has flat base, conical or multiple clinoplain configuration.
In another embodiment, the vertical height of the height of peripheral skirt and the diameter of spud can and spud can base section
Both are related, and the slope at the tip of the lower end wherein from the distal end of central tip to peripheral skirt and from center
Angle between the horizontal line that most advanced and sophisticated distal end radially extends is in the range of 2 degree to 25 degree.
Another aspect of the present invention is to provide a kind of jack-up unit.In one embodiment, jack-up unit includes it
On be mounted with the platform of accessory；Multiple spud legs for support platform；And there are multiple spud cans of optimal skirt, wherein one
Individual spud can is attached to the bottom end of a spud leg；The spud can wherein with optimal skirt includes being couple in multiple spud legs
A spud leg footing box top；Spud can base section, wherein spud can bottom have the central part from spud can bottom
Divide prominent central tip；Wherein top section and base section couple to form Ship Structure at their periphery；And
Peripheral skirt, it has the upper end being couple to spud can base section and the lower end extending down, wherein outer apron
The tip of the lower end of seat is higher than the distal end of central tip.
According to a preferred embodiment of the invention described in detail below simultaneously combines accompanying drawing, and the target of the present invention and advantage will become
Obtain obviously.
Brief description
Now will be described below with reference to the accompanying drawings according to a preferred embodiment of the invention, wherein identical reference represents identical unit
Part.
Fig. 1 illustrates the cross-sectional view of tradition spud can of the prior art.
Fig. 2 illustrates the cross-sectional view in prior art with the spud can of typical skirt.
Fig. 3 illustrates the cross-sectional view according to an embodiment of the invention with the spud can of optimal skirt.
Fig. 4 shows the exemplary situation wherein using the spud can with optimal skirt of the present invention.
Fig. 5 illustrates the side view (a) of the jack-up unit using optimal skirt spud can, and according to the present invention
The isometric view (b) coupling between the spud leg of the self-elevating drilling platform of embodiment and optimal skirt spud can.
Specific embodiment
Described in detail below referring to certain embodiments of the present invention is more readily understood that the present invention.
With reference to publication in this application, the disclosure here of these publication is incorporated in entirety by reference
To in subject application, to be described more fully below state-of-art involved in the present invention.
One aspect of the present invention provides the most preferably peripheral skirt that has of to strengthen performance for jack-up unit operation
Amended spud can.In simple terms, the bottom end of skirt is higher than the bottom end at umbo/tip.Optimal skirt stake
Each stage that foot case operates in jack-up unit is general.The design requirement depending highly on application-specific of skirt；If
The factor being contemplated that in meter comprises：I) spud can diameter, ii) spud can bottom (also comprising central tip) total height, iii)
From the skirt tip height of maximum loaded area, iv) slope between central tip and skirt tip, and v) most advanced and sophisticated in skirt
The corresponding spud can bottom loaded area of level.
Referring now to Fig. 3, provide the cross-sectional view of the spud can with optimal skirt according to an embodiment of the invention.
The spud can with optimal skirt 100 includes spud can top section 110, spud can base section 120, spud can side wall 130
With peripheral skirt 140.Spud can top section 110 can be conical or multiple clinoplain configurations；Put down in jack up when applying
When in platform, spud can top section 110 is coupled with the spud leg A of jack-up unit, to support a stake of self-elevating drilling platform
Lower limb.Spud can base section 120 can be flat base, or cone or have the multiple clinoplains configuration to downslope.?
In one embodiment, it has double being arranged obliquely.The central point that spud can base section 120 has from spud can bottom projects
Central tip 150.Spud can side wall 130 connects top 110 and bottom 120 to form Ship Structure.In certain embodiments, save
Slightly spud can side wall 130, so that footing box top 110 and spud can bottom 120 couple with outside being formed at their periphery
Portion edge.
Peripheral skirt 140 has the upper end being integrally coupled to spud can bottom.Skirt and side wall typically flush
(Fig. 3 a), but couple an alterable between skirt and spud can bottom；For example as shown in figure 3b, slightly radially inwardly
Skirt is placed on ground.Peripheral skirt 140 also has the lower end projecting down, so that peripheral skirt 140 surrounds spud can bottom
The distal end of the central tip 150 in portion's part 120, wherein spud can bottom is less than the lower end of peripheral skirt 140
Most advanced and sophisticated.Height (the H of peripheral skirt 140s) 141 with the diameter 122 of spud can 140 and the vertical height (H of spud can bottom 120t)
Related both 121.From the slope at the distal end of central tip 150 tip to peripheral skirt 140 with from central tip 150
Angle (α) 124 between the horizontal line that distal end radially extends in the range of 2 degree to 25 degree, preferably in 5 degree to 25 degree models
In enclosing, and more preferably in the range of 10 degree to 20 degree.Minimum skirt highly guarantees to fill the enough of purpose for space
Limit and minimum scour protection.Can with respect to the diameter of peripheral skirt 122 in effective spud can diameter of skirt most advanced level 123
Between 1% and 75% change, preferably between 5% and 50% change, and more preferably 10% and 30% anaplasia
Change.Some performances that the super too small or mistake going beyond the scope can be damaged in above-mentioned performance on a large scale.
Optimal skirt spud can 100 can be composed of any suitable material, and is combined in any way as suitable.Material
It is well known in the present art with molectron；Therefore in order to not obscure the principle of the present invention, will not be provided further herein
Details.
Skirt highly can be configured to promote completely bottom contact or to provide " embedding effect " during situation on the spot.Change
Sentence is talked about, and can retain the normal skirt type spud can key benefit that stationarity increases in tight sand sea bed.Similarly, in pole
Install in hard clay, the bottom contact of the wherein expected part using traditional spud can, skirt realize space filling with
Realize completely attaching to.In turn, this will maximize (particularly in clayey) level slip ability and the fixation of spud can
Property.
Meanwhile, during spud can drops on sea bed, form central tip and conical lower section and controlled and sea with notable
The interaction of bed.This employs the advantage as being described in the traditional spud can in previous section.By the initial rank in impact
During section, minimize the contact with skirt and attract less spud can horizontal resistance, install (particularly on hard sea bed)
Period, jack-up unit performance will not be damaged because of the presence of skirt.
When spud can is seated on pan soil earth or rock sea bed, and when penetrating extremely shallow, skirt most advanced and sophisticated higher than central tip
Bottom will ensure that if not all of being also that most of spud can counteracting force is obtained by central tip.Optimal skirt will stop
Skirt contacts the strong point, and it can form eccentric load on spud can.When skirt tip is higher than the bottom of central tip, center
Tip will become support, and can minimize the most advanced and sophisticated potential energy reactive to sea bed of skirt.This is also applied to jack up and puts down
When platform is shelved on waveform or tilts on sea bed.
During extracting in argillic horizon sea bed, skirt is used for improving the effect of the water injection system at spud can bottom
(compared to traditional spud can), and minimize extra frictional resistance (the skirt type footing compared to length from skirt
Case).Limit injection pressure will help ensure that the pressure distribution evenly crossing over spud can bottom, and therefore can be more effectively
Compensate pressure of inspiration(Pi) or rising thrust is provided at spud can bottom.
Best allocation will help ensure that the advantageous property of spud can in each case, and described situation for example, i) is being pacified
Landing during dress, ii) be seated on waveform/inclination sea bed, iii) space filling after mounting, iv) during on the spot
Scour protection, the v) fixation during on the spot, and vi) rising resistance during spud leg extracting and water injection limit.
Referring now to Fig. 4, the illustrative of the application of operation illustrating optimal skirt spud can in various scenarios is provided to regard
Figure.In Figure 4 A, during spud can drops on hard sea bed, central tip will have the opposite effect to sea bed.Often closing most
The interaction of sea bed and skirt during the starting stage of the impact of key, can be stoped, and therefore attract less impulsive force.In figure
In 4B, when jack-up unit is seated in and tilts to the extremely hard of a certain degree or rock sea bed it can be ensured that central tip becomes
The strong point, and potential eccentric load sea bed being had the opposite effect and being led to by skirt tip can be minimized.Also open up in Fig. 4 C
Show that wherein jack-up unit is arranged on the situation on sandstone sea bed.In addition to providing minimum scour protection, skirt also keeps
The key benefit being increased by the stationarity completely attaching to area and the generation of " embedding " effect.If necessary.By via spray line
Injection barite or other materials, skirt contributes to space filling to realize completely attaching to.Fig. 4 D illustrates to be arranged on and overlies pole
Spud can in the bury of hard sea bed.By providing the laterally projecting face of the embedding and increase in extremely hard layer
Long-pending, skirt improves level slip ability.If the clay being detained between spud can bottom and hard sea bed is considered enough
Hard and limited by skirt, then this is possible to increase stationarity.Fig. 4 E is illustrated in during spud leg extracts in spud can bottom zone
How water injection at domain can be limited by optimal skirt.Will help ensure that from the restriction of the pressure of injection nozzle radiation
Cross over the pressure distribution evenly of spud can bottom, and therefore it can more effectively compensate for pressure of inspiration(Pi) or in spud can bottom
Place provides and rises thrust.
Referring now to Fig. 5, provide the side view (a) of the jack-up unit using optimal skirt spud can, and according to this
The isometric view (b) coupling between the bright spud leg of the self-elevating drilling platform of an embodiment and optimal skirt spud can.
Fig. 5 a illustrates jack-up unit 200, and it includes multiple spud legs 210 (illustrating 4 spud legs), in each spud leg and Fig. 5 b
The spud can 100 describing in detail couples, and platform 220 is supported by multiple spud legs 210, and accessory 230.Three girder formulas of jack-up unit
Truss leg is connected to the circular spud can with optimal skirt.Footing box top and spud can bottom are by spud can bottom tool
It is made up of three hang plates of central tip projection.Peripheral skirt is couple to the spud can bottom nestling up under footing tank wall.
The tip of the lower end of peripheral skirt is higher than the distal end of central tip.
Although describing the present invention by reference to specific embodiment, it should be understood that described embodiment is illustrative, and
And scope of the invention not limited to this.The ordinary skill people to this area involved in the present invention for the alternate embodiment of the present invention
Will become clear from for member.Such alternate embodiment is considered to cover in scope of the invention.Therefore, the present invention
Category is defined by the appended claims, and is supported by foregoing description.
Claims (8)
1. a kind of spud can with optimal skirt is it is characterised in that include：
Spud can top section；
Spud can base section, wherein said spud can bottom has the center that the core from described spud can bottom projects
Most advanced and sophisticated；Wherein said top section and described base section couple at the periphery of described top section and described base section with
Form Ship Structure；And
Peripheral skirt, it has the upper end being couple to described spud can base section and the lower end extending down, its
Described in peripheral skirt described lower end tip be higher than described central tip distal end.
2. spud can according to claim 1 it is characterised in that further include is placed in described top section and described
Spud can side wall between base section, to connect described spud can top section and described spud can base section, thus
Form Ship Structure；
3. spud can according to claim 1 it is characterised in that described top section have flat surfaces, cone or
Multiple clinoplain configurations.
4. spud can according to claim 1 it is characterised in that described base section have flat base, cone or
Multiple clinoplain configurations.
5. spud can according to claim 1 it is characterised in that height and the described spud can of described periphery skirt straight
The vertical height of footpath and described spud can base section is related, and wherein from the described distal end of described central tip
The described most advanced and sophisticated slope of described lower end and the described distal end footpath from described central tip to described periphery skirt
To the angle between the horizontal line extending in the range of 2 degree to 25 degree.
6. spud can according to claim 1 is it is characterised in that described angle is between 5 degree to 25 degree.
7. spud can according to claim 1 is it is characterised in that described angle is between 10 degree to 20 degree.
8. a kind of jack-up unit is it is characterised in that include：
Platform, described platform is mounted with accessory；
Multiple spud legs, for supporting described platform；And
Multiple spud cans, have optimal skirt, and one of described spud can is attached to the bottom end of a spud leg；
The described spud can wherein with optimal skirt includes：
Footing box top, is couple to one of in the plurality of spud leg；
Spud can base section, wherein said spud can bottom has the center that the core from described spud can bottom projects
Most advanced and sophisticated；Wherein said top section and described base section couple at the periphery of described top section and described base section with
Form Ship Structure；And
Peripheral skirt, has the upper end being couple to described spud can base section and the lower end extending down, wherein
The tip of the described lower end of described periphery skirt is higher than the distal end of described central tip.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SG2014/000266 WO2015190991A1 (en) | 2014-06-09 | 2014-06-09 | Modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106460352A true CN106460352A (en) | 2017-02-22 |
Family
ID=54833955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480079653.1A Pending CN106460352A (en) | 2014-06-09 | 2014-06-09 | Modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3132093B1 (en) |
| CN (1) | CN106460352A (en) |
| SG (1) | SG11201609373PA (en) |
| WO (1) | WO2015190991A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227831A (en) * | 1978-04-04 | 1980-10-14 | Raymond International Builders, Inc. | Self-contained offshore platform |
| US20070059106A1 (en) * | 2005-09-13 | 2007-03-15 | Offshore Technology Development Pte Ltd | Extraction of foundation in offshore platforms |
| US8011857B2 (en) * | 2005-09-13 | 2011-09-06 | Offshore Technology Development Pte Ltd | Extraction system for removable marine footing |
| US20120230773A1 (en) * | 2011-03-09 | 2012-09-13 | Keppel Offshore & Marine Technology Centre Pte Ltd. | Skirted Foundation For Penetrating Soft Material |
| KR20140002961A (en) * | 2012-06-28 | 2014-01-09 | 삼성중공업 주식회사 | Spud-can for floating structure |
-
2014
- 2014-06-09 WO PCT/SG2014/000266 patent/WO2015190991A1/en active Application Filing
- 2014-06-09 SG SG11201609373PA patent/SG11201609373PA/en unknown
- 2014-06-09 CN CN201480079653.1A patent/CN106460352A/en active Pending
- 2014-06-09 EP EP14894748.4A patent/EP3132093B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227831A (en) * | 1978-04-04 | 1980-10-14 | Raymond International Builders, Inc. | Self-contained offshore platform |
| US20070059106A1 (en) * | 2005-09-13 | 2007-03-15 | Offshore Technology Development Pte Ltd | Extraction of foundation in offshore platforms |
| US8011857B2 (en) * | 2005-09-13 | 2011-09-06 | Offshore Technology Development Pte Ltd | Extraction system for removable marine footing |
| US20120230773A1 (en) * | 2011-03-09 | 2012-09-13 | Keppel Offshore & Marine Technology Centre Pte Ltd. | Skirted Foundation For Penetrating Soft Material |
| KR20140002961A (en) * | 2012-06-28 | 2014-01-09 | 삼성중공업 주식회사 | Spud-can for floating structure |
Also Published As
| Publication number | Publication date |
|---|---|
| SG11201609373PA (en) | 2016-12-29 |
| EP3132093A4 (en) | 2017-12-13 |
| EP3132093B1 (en) | 2018-11-28 |
| EP3132093A1 (en) | 2017-02-22 |
| WO2015190991A1 (en) | 2015-12-17 |
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Application publication date: 20170222 |