CN1867483A - A method of constructing a semi-submersible vessel using dry dock mating - Google Patents
A method of constructing a semi-submersible vessel using dry dock mating Download PDFInfo
- Publication number
- CN1867483A CN1867483A CNA2004800303901A CN200480030390A CN1867483A CN 1867483 A CN1867483 A CN 1867483A CN A2004800303901 A CNA2004800303901 A CN A2004800303901A CN 200480030390 A CN200480030390 A CN 200480030390A CN 1867483 A CN1867483 A CN 1867483A
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- upper body
- truss
- lower case
- dry dock
- support structure
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- 238000000034 method Methods 0.000 title claims abstract description 95
- 230000013011 mating Effects 0.000 title claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000007667 floating Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Classifications
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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
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
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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
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C5/00—Equipment usable both on slipways and in dry docks
- B63C5/02—Stagings; Scaffolding; Shores or struts
- B63C2005/022—Shores or struts, e.g. individual oblique support elements for stabilizing hulls in dry-docks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C5/00—Equipment usable both on slipways and in dry docks
- B63C5/02—Stagings; Scaffolding; Shores or struts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Earth Drilling (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
A method of constructing a semi-submersible rig in a shipyard and completely assembling the rig at the shipyard. An upper hull (1) of the rig is constructed on land next to a dry dock, where the lower hull (2) is constructed in the dock where mating takes place. The upper hull is then skidded to a position above the lower hull. The lower hull is floated and lifted by flooding the dry dock, and position of the lower hull is adjusted using the ballast tanks of the lower hull. Once the upper hull and the lower hull are met and aligned, they are permanently welded together, completing the rig assembly in the dry dock.
Description
Technical field
A kind of method of building the inshore structure of relate generally to of the present invention relates to a kind of semisubmersible rigs, ship or structure method of (being called " driling rig ") of building especially in dock.
Background technology
On the market to carrying out the demand of the semisubmersible drill rig that oil and natural gas surveys in continuous increase surpassing 150 meters dark seabeds.
The method that the construction semisubmersible drill rig of two kinds of routines is arranged at present.The method of first kind so-called " continuous blocks accumulation " provides the method for a kind of " from bottom to top " sequential build semisubmersible drill rig.According to this method, this flat-bed lower case is floated, at first use seashore hoisting crane or floating crane waterborne pillar be connected one sets up of upholder.Thereafter the upper body that stands on the lower case is assembled in an identical manner.Major defect of this method is to use seashore hoisting crane and floating crane waterborne widely.Often, the progress of construction depends on the ability of floating crane waterborne.In addition, the welding job of a large amount of contiguous blocks will cause long production cycle.On the other hand, the installation and commissioning of corollary equipment (outfitting) and main equipment must could be carried out on driling rig after setting up of whole driling rigs finished.Next this will cause total production cycle trail run long and equipment to be postponed, and particularly influence the drilling rig at the upper body core.
The method of second kind of existing construction semisubmersible drill rig is the upper body and the lower case of construct platform simultaneously, then these two halves is linked together again.According to this method, upper body is loaded on the barge, and upper body and lower case all are drawn to the position, sea that the depth of water can be held lower case.Lower case is followed the degree of depth that ballace and balancing device sink to be needed subsequently, and only crutched top is exposed to temporary transient berthing on the sea, and power-supply system and complicated logistics also need such operation.Barge transports upper body and is located in the lower case top.Engaging (mating) before, barge must be fastened on the position relative with lower case.The barge of Fu Donging little by little sinks to touching the lower case pillar up to the bottom of upper body in water under the effect of ballace ground subsequently.To weld be last operation in the junction between upper body and lower case.The major defect of this method is that attended operation exists very high risk usually, and the sea environment is very abominable and uncontrollable.And this operation may face a large amount of uncertain factors.The safety of this attended operation and quality will become main focus.
In many published or disclosed patent documentations, also disclose the method that other build the sea driling rig.Such as, in the U.S. Pat 6347909 of issue on February 19th, 2002, disclosed a kind of method of building driling rig, its deck is transported to the sea and this deck is installed on the bottom section on sea.Whole deck is manufactured on and is used for supporting on one group of multilayer (deep) steelframe of jacking (jacking) unit.Deck that tightens together and multilayer steelframe slide on two pontoons (pontoon).Whole assembly parts being drawn to the place of erection, and by jack-up, simultaneously pontoon is joined to be depressed and supported by pontoon up to assembly parts at that steelframe.Be reduced on the bottom section with aft deck, pontoon is removed.
Another method of patenting discloses in the U.S. Pat 6340272 of on January 22nd, 2002 issue, by engage self can float the deck construction on sea with self float at the bottom section construction sea on sea platform.Self floatable deck construction can be floating harbour (pier) or barge, and the equipment that needs has been installed thereon.Bottom section is partially immersed in the water, and harbour or barge are positioned its top, lay down ballace in the basis subsequently producing the supporting power of vertical direction between bottom section and harbour or barge, thereby realize joint.
The method that another is patented has disclosed a kind of equipment and method that the deck is installed on the bottom section of sea in the U.S. Pat 5924822 of issue on July 10th, 1999.Two independently pontoon each contain two and be spatially separated from each other and from the upwardly extending pillar of pontoon.Each pontoon all is provided with ballast tank, and presses full ballace in the process of transporting.Pontoon allows the deck directly to be placed on the top of sea bottom section.When the bottom section that floats is laid down ballace to the pontoon ballasting, the deck is transplanted on unsteady bottom section.
U.S. Pat 5237949 in issue on August 24th, 1993 has disclosed a kind of construction and assembling sea flat-bed method, and wherein flat-bed common drinking water in sea surpasses the degree of depth in water route between construction site and the platform use location.Make respectively in very shallow dry dock on flat-bed housing and deck.Fractional flooding in the dry dock floats to the position that engages with the deck on the housing, platform is raised subsequently.
The patent No. of announcing on November 28th, 1981 is that the Japanese Patent of 56-154381 has disclosed a kind of semisubmersible drill rig, and it is by a pair of pontoon, and upper deck and pillar are formed.The end portion of the transom of pillar and deck end portion are fixed together.Subsequently, deck, pontoon and pillar so that the core on the core of transom and deck is aimed at, are adjusted the degree of dip of pillar by ballasting simultaneously.
Although these methods of having patented can be built semisubmersible drill rig under certain conditions, but still need one simpler, safer, the method that more has an economic benefit can be at the place near dock, the assembling scheme of preferably realizing in dock.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of method of building semisubmersible drill rig with safety, reliable and low relatively cost than additive method.
Another object of the present invention provides a kind of method of building semisubmersible drill rig in the dry dock of bank and conventional dock.
These and other purpose of the present invention reaches by the regulation of method, and this method allows to build simultaneously upper body and lower case in dock, thereby and shortens total construction progress.On the bank, upper body fully is erected on slip truss and the support tower, and meanwhile lower case is being built near in the dry dock of slip truss.Sub-truss is installed in dry dock, is used for supporting always a plurality of sliding beams of engage position above the upper body construction site on the bank extends to lower case the dry dock.
In case upper body and lower case are built and finished, utilization hydraulic pressure jacking system makes upper body slide into engage position on sliding beam.Then carry out bonding operation, the lower case in the dry dock is floated up to contact and support upper body.The welding of the junction of upper body and lower case is carried out at last.By such method, whole bonding operation can be carried out under the controollable situation, and this has guaranteed the safety and the quality of operation.
Description of drawings
In order further to understand characteristic of the present invention and purpose, ensuing description will combine with accompanying drawing, and wherein corresponding part has provided corresponding label in the accompanying drawings, wherein:
Fig. 1 and Fig. 2 are respectively the exterior contour view and the birds-eye vieies of delivery and bonding operation device.
The cross sectional drawing of the upper body that Fig. 3 is supported by slided truss and building tower.
Fig. 4 has illustrated the step that sub-truss is installed in dry dock.
Fig. 5 has illustrated the position of tapered member in the method for the present invention.
Fig. 6 is the cross sectional drawing of explanation engage position above dry dock middle and upper part housing is in lower case.
Fig. 7 has illustrated the step that is supported and removed slip truss process when upper body fully by lower case after bonding operation.
Fig. 8 is presented at the scheme drawing that separates sliding beam before driling rig emerges.
Fig. 9 is the scheme drawing that the explanation bonding operation is finished.
The specific embodiment
For a more detailed description in conjunction with the accompanying drawings now, Fig. 1 and Fig. 2 have shown the dock operated by rotary motion that comprises dry dock, and semisubmersible drill rig wherein of the present invention has been built and engaged and finished.As depicted in figs. 1 and 2, semisubmersible drill rig comprises upper body 1 and a lower case 2.In the process of building, upper body 1 is supported by the slip truss 3 that is positioned at bank and adjacent trunk dock 4.Truss 3 also designed to be able in unloading operation and use the sliding shoe 8 whole upper body of sliding on sliding beam 6.Auxiliary support structure 5 or sub-truss 5 are erected in the dry dock 4.
Sliding beam or transom 6 extend between the bottom of sub-truss 5 and slip truss 3.Transom 6 is removed from sub-truss after bonding operation is finished, and this is more detailed description hereinafter.
Columniform hydraulic type jacking system 7 is installed on first sliding shoe 8, and anchor block 9 is attached to the far-end of sliding beam 6.Multi cord (strand wire) 14 connects in anchor block 9 and the hydraulic type jacking system 7.Sub-truss 5 back on dry dock are provided with two barges 10.Filled ballace in the cabin of barge 10.Barge 10 is connected to the far-end of beam 6 by pull bar 11 (tie bar).Barge 10 stops the upward movement of sliding beam 6 as equipoise.
Before building upper body 1, around slip truss 3, set up interim support tower 16 to support upper body 1 (as shown in Figure 3).Below upper body 1, be provided with workplatform 19.Vertical stair 17 and horizontal aisle 18 provide the passage that passes workplatform 19 arrival upper body 1 from ground.These members provide a safety, friendly working environment.
The installation of sub-truss 5 during Fig. 4 has illustrated in the dry dock.As we can see from the figure, sub-truss 5 is made up of top 5A and bottom 5B.Bottom 5B has transom 5C, and this transom 5C has convex surface, and top 5A has transom 5D, and this transom 5D has the concave surface of the radius that the radius with protuberance 5C matches.Bottom 5B is installed on the dry dock base plate, with barge 10 top 5A is installed thereafter.The top 5A of truss 5 simply descends to rest on the 5B of bottom, makes convex surface 5C and the concave surface 5D joint that matches.Need not welding, realized the Fast Installation and the dismounting of sub-truss 5, shortened the holding time of dry dock.
Fig. 5 illustrated the present invention relates to by in manufacture process between adjacent member the feature of locating friction power intensifier.A plurality of tapered members as timber wedge 13, have been used the demand that reduces welding.In the partial enlarged drawing 1 of Fig. 5, can see that two tapered members 13 are installed between the top of the bottom of upper body 1 and slip truss 3.Similarly, shown in the view A and partial enlarged drawing 2 of Fig. 5, sub-truss 5 and sliding beam 6 are installed on respectively on the tapered member 13 between dock floor and the sub-truss.The timber of high compressive resistance shifts vertical load, and the friction force between the adjacent member surface has retrained the side direction transfer.
In case upper body 1 and lower case 2 built and finished, upper body 1 slides into the position of lower case 2 tops by jack-up and along sliding beam 6, and and the pillar rough alignment of lower case 2.Fig. 6 has illustrated the position of upper body 1 and has arrived the position of engage position rear lower housing 2 at the former.It is just enough to keep about 500 mm clearance between upper body bottom and the lower case post top portion.
The next step of this process is the come-up lower case.In this stage, water filling in the dry dock.By discharging the ballast water in each water tank or in several cabins, transferring ballast water, make the quick condition that lower case 2 is in to be needed, meanwhile, aim at upper body and lower case by the method adjustment of floating.The post top portion of lower case 2 finally contacts with the bottom of lower case 1.Weld interim bootstrap block in this stage execution in the junction of upper body and lower case.
The weight that lower case 2 constantly floats and supports upper body 1 up to it, the slit between upper body 1 and lower case 2 bodies is closed.Upper body 1 fully removes from sliding beam 3 subsequently.Weld fully junction in upper body and lower case, makes lower case 2 permanent being attached on the upper body 1.
After this engagement step, semisubmersible drill rig removes from auxiliary support structure 5.Slip truss 3 uses the hydraulic type jacking system that is installed on the slip truss 37 to get back to the bank from engage position.Use the hydraulic type jacking system 7,9 that is installed on the sliding beam 6 to be cut off, to pull out and be discharged on the barge 10 at the sliding beam above the dry dock 46.Use one or many conveying arrangements or shallow gulf trailer 12 to remove tie-beam 6 subsequently from dry dock 4.
Fig. 8 has shown that the engage position of whole driling rig in dry dock 4 with housing 1 and 2 emerges from sub-truss 5.
Fig. 9 is the birds-eye view that the sub-truss 5 of explanation in dry dock 4 removes driling rig.
Method of setting for this platform provided by the present invention has been compared following advantage with existing conventional driling rig method of construction.By building upper body and lower case simultaneously, make total production cycle be shortened.Avoided excessive risk and uncertain engaging process, therefore, guaranteed high security and quality at abominable sea environment.Therefore, the trail run ahead of time of upper body and lower case good alignment and equipment becomes possibility.
This method provides a kind of appropriate configuration of considering the variation support upper body of load modes in the whole erection process of upper body.Set up safe workplatform below upper body, it has strengthened safety of the present invention, and makes working environment become very friendly.Tower provides the escape way of the workplatform of vertical and the below from ground to upper body level.In addition, can unobstructive upper body be slided into engage position.
The sub-truss member is easy to install, and is easy to arrange, and is easy to remove.Need on the dry dock base plate, not carry out any extra pilework.The potential problem that will be caused by small surface subsidence in the sliding process has been eliminated fully, and the cross bracing of lower case and the interference between the sub-truss dropped to minimumly, even is eliminated.
The additional advantage of the inventive method is to have cancelled expensive ground anchor point, with high-intensity pulling force in the engineering that stands to slide; Make recyclable in this way sliding beam and sub-truss, and protected slidingsurface.Timber wedge allows the level of better adjusting mechanism, and has limited the side travel of mechanism by the friction force between the surface.
Although the present invention as above is described with reference to specific embodiments, this specification sheets also means the limitation of understanding.The difference of the embodiment that is disclosed changes, and as other embodiment of the present invention, is clearly to those skilled in the art by the reference specification sheets.Those skilled in the art obviously can carry out various variations on basis of the present invention.But these variations obviously should be included in the claim of the present invention.
Claims
(according to the modification of the 19th of treaty)
1. a method of building semisubmersible drill rig comprises following step
Upper body is set and supports the slip truss device of this housing on land;
Lower case near this slip truss device is set in dry dock;
A kind of device is provided, and this device is installed on the described slip truss device, is used for upper body is moved to the position of lower case top;
Transfer the position of upper body to the lower case top;
Adjust the ballace in the lower case, lower case is aimed at upper body;
Join upper body to lower case, thus the assembling semisubmersible drill rig; And remove semisubmersible drill rig from the upper body bracing or strutting arrangement.
2. the method for claim 1, further comprise following steps: when upper body is positioned the lower case top, the auxiliary girder supporting construction is set with temporary transient support upper body, and the wherein said step that removes semisubmersible drill rig from slip truss device further comprises step: driling rig removes semisubmersible drill rig from the auxiliary girder supporting construction.
3. the method for claim 1, the wherein said step that slip truss device is set further comprises the steps: to set up slip truss and a plurality of tower superstructure before the upper body upper body is remained on the position that raise the land at structure on described slip truss and the tower superstructure, is used to provide the level and the vertical channel that lead to upper body.
4. method as claimed in claim 3 further is included under the situation that does not have welding between upper body and the slip truss, is provided with to suppress the step of upper body with respect to the device of the parallel motion of slip truss.
5. method as claimed in claim 4, wherein said restraining device comprises a plurality of tapered members, this tapered member is formed by the material that increases friction force on the surface at least, and described tapered member is installed between the mating surfaces of the lower surface of upper body and slip truss.
6. method as claimed in claim 2, the step that described auxiliary girder supporting construction wherein is set be included in dry dock sub-truss is set and be arranged on the auxiliary girder supporting construction and slip truss device between the step of the tie-beam that extends.
7. method as claimed in claim 6 further is included under the situation that does not have welding between upper body and the slip truss or be anchored, and is provided with to suppress the step of auxiliary girder supporting construction with respect to the device of the parallel motion of dry dock.
8. method as claimed in claim 7, wherein said restraining device comprises a plurality of tapered members, and this tapered member is formed by the material that increases friction force on the surface at least, and described tapered member is installed between auxiliary support structure basal surface and the dry dock base plate.
9. method as claimed in claim 6 further is included under the situation of not welding between auxiliary girder supporting construction and the tie-beam, is provided for suppressing the device of the parallel motion of tie-beam and auxiliary girder supporting construction.
10. method as claimed in claim 9, wherein said restraining device comprises a plurality of tapered members, this tapered member surface is at least formed by the material that increases friction force, and described tapered member is installed between the mating surfaces of tie-beam basal surface and auxiliary girder supporting construction.
11. method as claimed in claim 6, the device of wherein said handover upper body comprise the jacking system that is installed on slip truss device and the tie-beam.
12. method as claimed in claim 6, wherein said tie-beam has near-end, and described near-end is fastened to slip truss device.
13. method as claimed in claim 12 further comprises the step that the far-end of tie-beam removably is fastened to the balancing device that is positioned at auxiliary girder supporting construction rear portion.
14. the method for claim 1 further is included in the step that the auxiliary girder supporting construction is installed on the dry dock base plate.
15. method as claimed in claim 14, described auxiliary girder supporting construction comprises the bottom with evagination transom and has the top of cooresponding indent transom, and the described step that the auxiliary girder supporting construction is installed on the dry dock base plate comprises the step of the upper and lower pairing joint that makes the auxiliary girder supporting construction.
16. method as claimed in claim 2, the wherein said step that removes semisubmersible drill rig from the auxiliary girder supporting construction comprises the step that reclaims slip truss device and tie-beam.
17. method as claimed in claim 16 further comprises use and is installed in the step that the slip truss draws in the jacking system on the slip truss.
18. method as claimed in claim 16 further comprises and uses the jacking system pulling tie-beam be installed on the tie-beam and described tie-beam is discharged to step on a plurality of conveying arrangements.
19. in dock, build the method for semisubmersible drill rig, comprise following steps:
Slip truss and a plurality of support tower are set on land;
On slip truss and support tower, build the upper body of semisubmersible drill rig;
The sub-truss that is adjacent to the slip truss is set in dry dock;
When building upper body, in dry dock, build the lower case of semisubmersible drill rig;
Fastening jacking system under the slip truss;
A plurality of sliding beams that are fastened between sub-truss and the slip truss bottom are set;
The jacking upper body also will be built good upper body along sliding beam and be transplanted on the position of building good lower case top;
Allow lower case in dry dock, float;
Adjust lower case ballace so that lower case aim at upper body;
Upper body is joined on the lower case, thereby in dry dock, assemble semisubmersible drill rig;
Remove semisubmersible drill rig from slip truss and sub-truss.
20. method as claimed in claim 19, wherein said sliding beam has far-end, and described far-end is detachably connected to the process that is used for transferring in upper body and resists the balancing device that sliding beam rises.
21. method as claimed in claim 20 further is included in the step that sub-truss is installed on the dry dock base plate.
22. method as claimed in claim 21, wherein said sub-truss comprises the bottom with evagination transom and has the top of corresponding indent transom, and the wherein said step that sub-truss is installed on the dry dock base plate comprises the step of pairing in conjunction with the sub-truss upper and lower.
23. method as claimed in claim 20, further comprise the step that the tapered member that improves friction force is installed at least between upper body and slip truss, described tapered member suppresses the side travel of upper body under the situation of not welding between upper body and the sliding beam.
24. method as claimed in claim 19, the wherein said step that removes semisubmersible drill rig from slip truss and sub-truss comprises the step that reclaims slip truss and sliding beam.
25. method as claimed in claim 24 further comprises use and is installed in the step that the slip truss draws in the jacking system on the slip truss.
26. method as claimed in claim 24 further comprises and uses the jacking system be installed on the sliding beam to draw sliding beam and sliding beam is discharged to step on a plurality of barges.
Claims (26)
1. a method of building semisubmersible drill rig comprises following step
Upper body is set and supports the device of this housing on land;
Lower case near the upper body bracing or strutting arrangement is set in dry dock;
A kind of device is provided, and this device is installed on the described upper body bracing or strutting arrangement, is used for upper body is moved to the position of lower case top;
Transfer the position of upper body to the lower case top;
Adjust the ballace in the lower case, lower case is aimed at upper body;
Join upper body to lower case, thus the assembling semisubmersible drill rig; And
Remove semisubmersible drill rig from the upper body bracing or strutting arrangement.
2. the method for claim 1, further comprise following steps: when upper body is positioned the lower case top, auxiliary support structure is set with temporary transient support upper body, and the wherein said step that removes semisubmersible drill rig from the upper body bracing or strutting arrangement further comprises step: driling rig removes semisubmersible drill rig from auxiliary support structure.
3. the method for claim 1, the wherein said step that the upper body bracing or strutting arrangement is set further comprises the steps: to set up slip truss and a plurality of tower superstructure before the upper body upper body is remained on the position that raise the land at structure on described slip truss and the tower superstructure, is used to provide the level and the vertical channel that lead to upper body.
4. method as claimed in claim 3 further is included under the situation that does not have welding between upper body and the slip truss, is provided with to suppress the step of upper body with respect to the device of the parallel motion of slip truss.
5. method as claimed in claim 4, wherein said restraining device comprises a plurality of tapered members, this tapered member is formed by the material that increases friction force on the surface at least, and described tapered member is installed between the mating surfaces of the lower surface of upper body and slip truss.
6. method as claimed in claim 2, the step that described auxiliary support structure wherein is set be included in dry dock sub-truss is set and be arranged on auxiliary support structure and the upper body bracing or strutting arrangement between the step of the tie-beam that extends.
7. method as claimed in claim 6 further is included under the situation that does not have welding between upper body and the slip truss or be anchored, and is provided with to suppress the step of auxiliary support structure with respect to the device of the parallel motion of dry dock.
8. method as claimed in claim 7, wherein said restraining device comprises a plurality of tapered members, and this tapered member is formed by the material that increases friction force on the surface at least, and described tapered member is installed between auxiliary support structure basal surface and the dry dock base plate.
9. method as claimed in claim 6 further is included under the situation of not welding between auxiliary support structure and the tie-beam, is provided for suppressing the device of the parallel motion of tie-beam and auxiliary support structure.
10. method as claimed in claim 9, wherein said restraining device comprises a plurality of tapered members, this tapered member surface is at least formed by the material that increases friction force, and described tapered member is installed between the mating surfaces of tie-beam basal surface and auxiliary support structure.
11. method as claimed in claim 6, the device of wherein said handover upper body comprise the jacking system that is installed on upper body and the tie-beam.
12. method as claimed in claim 6, wherein said tie-beam has near-end, and described near-end is fastened to the upper body bracing or strutting arrangement.
13. method as claimed in claim 12 further comprises the step that the far-end of tie-beam removably is fastened to the balancing device that is positioned at the auxiliary support structure rear portion.
14. the method for claim 1 further is included in the step that auxiliary support structure is installed on the dry dock base plate.
15. method as claimed in claim 14, described auxiliary support structure comprises the bottom with evagination transom and has the top of cooresponding indent transom, and the described step that auxiliary support structure is installed on the dry dock base plate comprises the step of the upper and lower pairing joint that makes auxiliary support structure.
16. method as claimed in claim 2, the wherein said step that removes semisubmersible drill rig from auxiliary support structure comprises the step that reclaims upper body bracing or strutting arrangement and tie-beam.
17. method as claimed in claim 16 further comprises the step of using the jacking system that is installed on the upper body bracing or strutting arrangement to pull on portion's housings support device.
18. method as claimed in claim 16 further comprises and uses the jacking system pulling tie-beam be installed on the tie-beam and described tie-beam is discharged to step on a plurality of conveying arrangements.
19. in dock, build the method for semisubmersible drill rig, comprise following steps:
Slip truss and a plurality of support tower are set on land;
On slip truss and support tower, build the upper body of semisubmersible drill rig;
The sub-truss that is adjacent to the slip truss is set in dry dock;
When building upper body, in dry dock, build the lower case of semisubmersible drill rig;
Fastening jacking system under the slip truss;
A plurality of sliding beams that are fastened between sub-truss and the slip truss bottom are set;
The jacking upper body also will be built good upper body along sliding beam and be transplanted on the position of building good lower case top;
Allow lower case in dry dock, float;
Adjust lower case ballace so that lower case aim at upper body;
Upper body is joined on the lower case, thereby in dry dock, assemble semisubmersible drill rig;
Remove semisubmersible drill rig from slip truss and sub-truss.
20. method as claimed in claim 19, wherein said sliding beam has far-end, and described far-end is detachably connected to the process that is used for transferring in upper body and resists the balancing device that sliding beam rises.
21. method as claimed in claim 20 further is included in the step that sub-truss is installed on the dry dock base plate.
22. method as claimed in claim 21, wherein said sub-truss comprises the bottom with evagination transom and has the top of corresponding indent transom, and the wherein said step that sub-truss is installed on the dry dock base plate comprises the step of pairing in conjunction with the sub-truss upper and lower.
23. method as claimed in claim 20, further comprise the step that the tapered member that improves friction force is installed at least between upper body and slip truss, described tapered member suppresses the side travel of upper body under the situation of not welding between upper body and the sliding beam.
24. method as claimed in claim 19, the wherein said step that removes semisubmersible drill rig from slip truss and sub-truss comprises the step that reclaims slip truss and sliding beam.
25. method as claimed in claim 24 further comprises use and is installed in the step that the slip truss draws in the jacking system on the slip truss.
26. method as claimed in claim 24 further comprises and uses the jacking system be installed on the sliding beam to draw sliding beam and sliding beam is discharged to step on a plurality of barges.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG200306086-0A SG135929A1 (en) | 2003-10-17 | 2003-10-17 | A method of constructing a semi-submersible vessel using dry dock mating |
| SG2003060860 | 2003-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1867483A true CN1867483A (en) | 2006-11-22 |
| CN100515858C CN100515858C (en) | 2009-07-22 |
Family
ID=34432638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800303901A Active CN100515858C (en) | 2003-10-17 | 2004-10-15 | A method of constructing a semi-submersible vessel using dry dock mating |
Country Status (7)
| Country | Link |
|---|---|
| KR (1) | KR101153607B1 (en) |
| CN (1) | CN100515858C (en) |
| MY (1) | MY138006A (en) |
| NO (1) | NO339281B1 (en) |
| SG (1) | SG135929A1 (en) |
| TW (1) | TWI342852B (en) |
| WO (1) | WO2005035354A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI380932B (en) * | 2006-09-25 | 2013-01-01 | Jurong Shipyard Pte Ltd | A method of contemporaneously constructing more than one semi-submersible rig using transverse skidding |
| WO2018214334A1 (en) * | 2017-05-25 | 2018-11-29 | 广船国际有限公司 | Method for over-water hoisting and positioning semi-submersible ship ballast tank |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102044969B1 (en) * | 2013-05-21 | 2019-11-14 | 대우조선해양 주식회사 | Move jig and move method for fpb |
| GB2538275B (en) | 2015-05-13 | 2018-01-31 | Crondall Energy Consultants Ltd | Floating production unit and method of installing a floating production unit |
| CN105151236B (en) * | 2015-09-28 | 2017-07-21 | 大连理工大学 | Floating pier and tower snorkeling movement carrying platform device and its method of work |
| CN108454798B (en) * | 2017-09-11 | 2022-04-26 | 青岛武船麦克德莫特海洋工程有限公司 | Integrated construction and installation method of upper process module of floating production facility |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1527759A (en) * | 1975-12-11 | 1978-10-11 | Mitsui Shipbuilding Eng | Semi-submersible structures and method of manufacture thereof |
| IL66064A (en) * | 1981-06-22 | 1985-08-30 | Adragem Ltd | Semi-submersible marine platform |
| JPS58207413A (en) * | 1982-05-26 | 1983-12-02 | Mitsui Eng & Shipbuild Co Ltd | Construction of semisub type platform |
| US5237949A (en) * | 1992-05-29 | 1993-08-24 | Shell Offshore Inc. | Floating platform shallow draft hull/deck mating |
| GB2330854B (en) * | 1997-10-31 | 2002-04-17 | Ove Arup Partnership | Method of transporting and installing an offshore structure |
-
2003
- 2003-10-17 SG SG200306086-0A patent/SG135929A1/en unknown
-
2004
- 2004-10-15 CN CNB2004800303901A patent/CN100515858C/en active Active
- 2004-10-15 MY MYPI20044266A patent/MY138006A/en unknown
- 2004-10-15 WO PCT/SG2004/000337 patent/WO2005035354A1/en active Application Filing
- 2004-10-15 KR KR1020067009437A patent/KR101153607B1/en active IP Right Grant
- 2004-10-15 TW TW093131386A patent/TWI342852B/en active
-
2006
- 2006-05-12 NO NO20062140A patent/NO339281B1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI380932B (en) * | 2006-09-25 | 2013-01-01 | Jurong Shipyard Pte Ltd | A method of contemporaneously constructing more than one semi-submersible rig using transverse skidding |
| WO2018214334A1 (en) * | 2017-05-25 | 2018-11-29 | 广船国际有限公司 | Method for over-water hoisting and positioning semi-submersible ship ballast tank |
Also Published As
| Publication number | Publication date |
|---|---|
| NO339281B1 (en) | 2016-11-21 |
| MY138006A (en) | 2009-04-30 |
| KR20060098385A (en) | 2006-09-18 |
| KR101153607B1 (en) | 2012-06-11 |
| TW200521024A (en) | 2005-07-01 |
| SG135929A1 (en) | 2007-10-29 |
| CN100515858C (en) | 2009-07-22 |
| TWI342852B (en) | 2011-06-01 |
| WO2005035354B1 (en) | 2005-06-02 |
| NO20062140L (en) | 2006-05-12 |
| WO2005035354A1 (en) | 2005-04-21 |
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