CN102939238A - Tension leg platform with improved hydrodynamic performance - Google Patents
Tension leg platform with improved hydrodynamic performance Download PDFInfo
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- CN102939238A CN102939238A CN2011800195697A CN201180019569A CN102939238A CN 102939238 A CN102939238 A CN 102939238A CN 2011800195697 A CN2011800195697 A CN 2011800195697A CN 201180019569 A CN201180019569 A CN 201180019569A CN 102939238 A CN102939238 A CN 102939238A
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- post
- leg platform
- tension leg
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- spar structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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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
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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
- 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
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
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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
- B63B35/4413—Floating drilling platforms, 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
- 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
- B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
- B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
Abstract
A tension leg platform that is stable with a quayside-integrated deck without the use of temporary stability modules or specialized installation techniques. The hull preferably consists of four radially-oriented vertical comer columns connected with four central ring pontoon segments. The vertical columns are fixed to the outer periphery of the central pontoon. The columns are characterized by a major radial axis and a minor transverse axis. The mooring system includes tendons supported at tendon porches directly at the four column outboard lower corners, without additional radially-extending tendon support structures.
Description
Technical field
The present invention relates generally to such as the tension leg platform that is used for the offshore oil and gas probing and produces, and more particularly relate to such tension leg platform: it has enough intrinsic stabilities, in order to allow the harbour of topside to integrate, integrated hull and top towage are also installed to the erecting stage, all operations does not all use interim stable module or other professional equipment.
Background technology
In the oil and gas industry, be common such as the pontoon for the tension leg platform (TLP) of drilling and/or producing at sea.TLP is a kind of floating platform for drilling and produce at relatively dark water.Typical TLP hull construction is comprised of one, three or four columns and three or four floating drums at the underwater joint pin.Column and floating drum are generally rectangle or cylindrical cross-section.Topside is carried on the top of post, and it comprises one or more decks of supporting top production facility, drilling system, production riser and habitation module etc.At it draft place is installed, the floating drum of TLP pulls the plug and post extends on the water surface from the underwater.
The mooring system of TLP comprises the tubular steel member (being also referred to as lashing) that is called tension force muscle tendon (tendon), and this tubular steel member is because it is connected to platform hull floating, diving or partly diving and the tensioning of quilt height.High tension muscle tendon hardness makes the level that is reduced to the cycle that just is lower than main wave energy vertical natural vibration period of system.As a result, the power augmentation of vertical motion exists hardly, and platform have limited vertically swing, the roll and pitch motion.The tension force muscle tendon system of height tensioning also is restricted to horizontal-shift very little depth of water percentum.
Fig. 1 is the birds-eye view (in passing the horizontal section of post intercepting) of hull of the conventional TLP 200 of prior art.Four posts 212 are arranged to form square pattern, and wherein the longitudinal center line VC of each post 212 forms a foursquare angle.Four independent floating drums 214 form foursquare each limit.Floating drum 214 is located so that usually its longitudinal center line HC aligns between post line of centers VC.Tension force muscle tendon receptacle (porch) 220 directly is installed to the external corners of post 212 to be used for connecting mooring tension force muscle tendon.
Fig. 2 is the birds-eye view (in passing the horizontal section of post intercepting) of TLP more of new generation 300 that is called as the prior art of extension tension leg platform (ETLP).The TLP 200 of the prior art of similar Fig. 1, in the ETLP 300 of Fig. 2, corner post 312 is located so that the vertical line of centers VC of post 312 is crossing with the longitudinal center line HC of the floating drum 314 that is connected to post 312.Compare the conventional TLP 200 that the mooring with similar size occupies Fig. 1 of scope, locate more to the inside the less square of formation thereby the difference of the ETLP of Fig. 2 is post 312 and floating drum 314.Four tension force muscle tendon supporting constructions 330 are installed to the external corners of post 312 at the keel level place.Tension force muscle tendon receptacle 320 is installed to the far-end of tension force muscle tendon supporting construction 330 to be used for connecting mooring tension force muscle tendon.
Because the more close platform center C of post 312 location, so can use the deck construction of simplification, this causes the structural weight efficient larger than the TLP 200 of Fig. 1.More circlet shape spar structures 314 also helps larger structural weight efficient, and simplified construction, reduces to support span and cantilever, and the platform hydrodynamic performance of raising is provided.In other words, for given hull and the combination weight of topside, can support larger capacity weight.In addition, the ETLP 300 with the Fig. 2 that simplifies topside can allow the top more economical at the harbour place to integrate, and has perhaps eliminated the demand to heavy lift carrier or the installation of floating type deck.
Concerning TLP 200 and ETLP 300 both, the structural bulkhead that the inside of post and floating drum is normally used for damaging control separates, in order to strengthen structure, enclosure space be provided, to be used for the location and (for example to store various device, anchor, chain, propulsive mechanism etc.), be used for storing such as the liquid of fuel, water and hydrocarbon products and for ballasting.
According to its structure, the stability of (routine or extension) TLP may be not enough during installation.When in initial free floating draft (for example, wet drag draft or float draft) and locking draft (beginning TLP is fixed to the draft of tension force muscle tendon) between when filling ballace to TLP, exist TLP stability to be critical draft scope---before being locked into tension force muscle tendon and going ballasting, TLP potentially unstable or neutrality only.
When process is installed draft in locking with before going ballasting, exist various ways to solve this stability problem.The field engineering of most prior art depends on uses expensive professional erecting equipment.For example, a kind of selection is after hull being connected to tension force muscle tendon Texas deck to be installed at sea.Install at the sea on deck is expensive and high risk operation, because it needs to use heavy lift carrier or floating type deck field engineering usually.In addition, install at the sea on deck needs relatively for a long time fine weather.Therefore, if possible, usually preferably harbour integrate topside and with the platform towage finished to the erecting stage.
Another kind method supports hull by larger installation integrated TLP is adopted hook load upwards.Hook load has the rapid tensioning tension force muscle tendon of energy after locking and need not to wait for the advantage of going the ballasting process slowly.Yet the whole world only exists very that the hull of limited amount can provide for the TLP of common size required hook load.
Being used for increasing between the platform installation period another stable method is to prevent with interim buoyant module that hull from toppling before hull being fixed to its mooring tension force muscle tendon and going ballasting subsequently.For example, the U.S. Patent No. 6,503,023 that on January 7th, 2003 was authorized the people such as Huang discloses a kind of ETLP, and its use is positioned at the interim stable module in the post outside of tension force muscle tendon supporting construction top.The TLP Structural Tectonics that the people's such as Huang method allows to comprise platform, deck and equipment in vertical position, towage to the erecting stage and by structure being filled ballace or installing by interim stable module.Because the people's such as Huang layout has increased the structural table area at the waterline place, this makes ETLP be subject to larger wave action in the wave zone at place, sea, so preferably remove interim stable module at locking ETLP and after going ballasting.
Authorized the U.S. Patent No. 5 of Wybro on September 3rd, 1996,551, the U.S. Patent No. 7 that on May 16th, 802 and 2006 was authorized the people such as Wybro, 044,685 disclose the method that is used for installing TLP, and wherein each corner at TLP uses compression or downwards-pulling rope (or chain) to prevent that TLP from toppling before the locking of tension force muscle tendon.Compression or downwards-pulling rope are fastened to the upper top of mounted tension force muscle tendon at its lower end.Rope passes tension force muscle tendon receptacle and then passes ratchet pawl member or the winch that is positioned at tension force muscle tendon receptacle top.Along with the TLP draft increases in order to tension force muscle tendon is received in the tension force muscle tendon receptacle, pawl or winch keep the tension force in the rope, thereby prevent that TLP from swinging to any side.
As the alternative form of these professional field engineerings, TLP can be designed to have towage and required inherent stability is installed.The combination of wider column spacing and/or larger column or can be used to increase stability such as the design variation of the metacentric height of the raising platform that reduces barycenter.For example, in all identical situations, the conventional TLP configuration of Fig. 1 has larger stability in essence than the ETLP configuration of Fig. 2 at other.Because the design of any complication system all need to be weighed between competitive demand, the conventional TLP design of Fig. 1 obtains the larger stability of ETLP design than Fig. 2 take sacrificial structure weight efficiency and hydrodynamic performance as cost.
The people's such as Malcolm U.S. Patent Publication No.2002/0090270 discloses the stable semisubmersible offshore platform of post.The people's such as Malcolm platform adopts the triangular ring spar structures that is positioned at three corner post inboards.Especially, the longitudinal centerline of three floating drum members is positioned at by the turning being positioned at the inside on the leg-of-mutton limit that the vertical centerline of post limits.Yet because floating drum only is positioned at locating slightly in the inner part of post, the geometric triangulation limit is still through floating drum but only arrive the outside of floating drum line of centers.
The U.S. Patent No. 7,140,317 of authorizing the people such as Wybro also discloses the semisubmersible platform of the stability with raising.Platform among the Wybro'317 adopts four posts and is positioned at the rectangular loop spar structures of post inboard.That is to say that foursquare each limit that limits by the vertical centerline that foursquare four angles are positioned at four posts is positioned at outside and the outside of floating drum fully.Because the floating drum among the Wybro'317 is positioned at the inboard of post, platform is characterised in that, than have support span and the simplified construction of cantilever and the hydrodynamic performance of raising that reduces when each floating drum is placed in the middle between two newel posts of floating drum.
In the semisubmersible platform described in Malcolm'270 and the Wybro'317 each is carried out mooring with a plurality of catenary mooring fasts that radially extend around the neighboring of platform.Therefore, these platforms are not subjected to hang down and swing constraint, just as TLP.Therefore, wish to have the tension leg platform that constraint is hung down and swung, this platform adopts the wider column spacing that is used for strengthening stability, has simultaneously the less spar structures of the inboard that is positioned at post to be used for improving structure efficiency and hydrodynamic performance.
Summary of the invention
Main purpose of the present invention provides the tension leg platform that for offshore applications, for example is used for the offshore oil and gas probing and produces, its hull is with a plurality of posts and the central spar structures that is arranged on the post inboard, this has simplified structure, has reduced to support span and cantilever and the platform hydrodynamic performance that improves is provided.
Another object of the present invention provides tension leg platform, and the hull of this platform is with the rectangular column and the central spar structures that is arranged on the post inboard of radial directed, and post forms slabbed construction basically, thus the structure of simplified structure.
Another object of the present invention provides the tension leg platform of the column with square-section, this square-section has from the center of hull radially outward directed major axis, and column is support span and the cantilever that the deck provided support and reduced the required deck construction of in the TLP of routine support deck.
Another object of the present invention provides the tension leg platform of the modularity central authorities spar structures with the inboard that is positioned at column, this central authorities' spar structures can have center moon pool opening or can be complete closed, this compares the hydrodynamic performance that has improved platform with the annular floating drum of routine, construct simpler, weight is lighter, and is conducive to the support of steel catenary and compliant riser.
Another object of the present invention provides a kind of tension leg platform, its hull has the rectangular column of radial directed and with the central spar structures of moon pool, wherein spar structures is arranged on the inboard of post, and this allows compliant riser to be supported on the inboard or the outside of central spar structures.
The above purpose of the present invention and other advantage and feature are incorporated into for the tension leg platform such as offshore oil and gas probing and the offshore applications of producing, and this tension leg platform has the hull configuration of the central spar structures that comprises vertical pillar stiffener, is arranged on the post inboard at the lower end of post and is supported on the deck construction of the upper end of post.This structure is by vertical tension leg anchoring, and this vertical tension leg is connected to the outer surface of post and extends to straight down the seabed at the keel level place.Vertically mooring tension force muscle tendon connects by tension force muscle tendon receptacle, and this tension force muscle tendon receptacle is located immediately on the post and does not use the tension force muscle tendon supporting construction of extension.
Column and spar structures preferably are made of flat board basically.The neighboring of column contiguous center floating drum also has such shape of cross section: wherein radially outward orientation and central vertical axis outwards arrange certain distance from the floating drum neighboring to major axis from the center-point of hull.
Standpipe can be supported on the inboard of floating drum or the outside and extend to the deck.Central authorities floating drum and mixed lateral column designs simplification structure, reduced the platform hydrodynamic performance that supports span and cantilever and raising is provided.
Description of drawings
Be described in more detail below the present invention based on the embodiment that represents in the accompanying drawing, wherein:
Fig. 1 is the section plan of the conventional TLP hull of prior art, and the floating drum that is arranged between the column and connects column is shown;
Fig. 2 is the section plan of extension TLP (ETLP) hull of prior art, the column that has nearer lateral spacing therebetween (comparing with the conventional TLP hull that has identical mooring and occupy Fig. 1 of scope) is shown, is arranged between the column and connects the floating drum of column and the tension force muscle tendon supporting construction that extends radially outwardly from post;
Fig. 3 is the transparent view of tension leg platform according to a preferred embodiment of the invention, and the column that links together by the annular floating drum that is positioned at the post inboard is shown;
Fig. 4 is that the hull (post and floating drum) of the tension leg platform of Fig. 3 is along the section plan of the line 4-4 intercepting of Fig. 3;
Fig. 5 is the transparent view according to the hull of the tension leg platform of alternate embodiment of the present invention (post and floating drum), and wherein central spar structures does not have central opening and is located at the larger distance of post inboard and is contiguous to post by the rectangle extension; And
Fig. 6 is the transparent view according to the hull of the tension leg platform of another alternate embodiment of the present invention (post and floating drum), the embodiment of itself and Fig. 5 is similar, the trapezoidal cross-sectional plane of cardinal principle of column the has wider inside side walls of band that different is and narrower outside sidewall.
The specific embodiment
The name of authorizing the people such as Wybro on November 28th, 2006 is called the U.S. Patent No. 7 of " Central Pontoon Semisubmersible Floating Platform (central floating drum semisubmersible floating platform) ", 140,317 is incorporated herein by reference in full.
Fig. 3 and Fig. 4 show the tension leg platform 10 for the offshore applications of drilling and producing such as offshore oil and gas according to a preferred embodiment of the invention.Platform 10 has hull 11, and hull 11 comprises vertical pillar stiffener 12 and is arranged on the central spar structures 14 of the inboard of post at the lower end of post.TLP 10 comprises the deck construction 13 that is supported by the upper end of post 12.
Both inside of post 12 and spar structures 14 preferably by the structural bulkhead (not shown) separately to strengthen structure, (for example to be provided for location and storage various device, anchor, chain, propulsive mechanism etc.) enclosure space, and in order to provide a plurality of independent casees for to hull dress ballace and be stored in drilling well or the required or desired various fluids of well and other material between the producing life.
Various types of standpipes 19 can be supported by hull 11, comprise near vertical top tension force standpipe (TTR), compliant riser or steel catenary riser (SCR).Compliant riser or steel catenary riser (SCR) can be supported on the inboard or the outside of central spar structures 14, and extend to deck 13 by single spanning distance short pipe fitting (spool piece) or by the piping that is supported on the hull.Top tension force standpipe (TTR) can be supported on the deck 13, and can be by standpipe joint of joist (not shown) lateral support at the float-level height place.
Although can use any suitable shape, but central spar structures 14 is preferably octagon, four orthogonal directed side section 14a that this octagon has and four interlock to angular orientation round corner section 14b are connected to spar structures 14 to be formed on platform center vertical axis C having unit structure placed in the middle on every side to angular orientation round corner section 14b.In Fig. 3 and embodiment shown in Figure 4, central spar structures 14 comprises center moon pool opening 14c, and center moon pool opening 14c is depicted as the octagon opening, but can have any other suitable shape.Side section 14a and round corner section 14b preferably characterize by the essentially rectangular cross-sectional plane around central horizontal axis or horizontal center line HC separately.
In the column 12 each has lower end 12a and upper end 12b.Post 12 preferably has laterally (level) cross section of quadrangle, and it can be essentially rectangular or trapezoidal configuration.Fig. 3 and Fig. 4 are depicted as rectangle with post 12, and the shape of cross section of post 12 has the directed major axis A radially outward from the center-point C of hull 11
1Especially, post 12 limits the rectangular cross section that the broad side limit wall 12c by two parallel spaced apart forms, and side wall 12c is connected respectively to narrower madial wall 12d and lateral wall 12e.Therefore, each is erect pillar stiffener 12 and is limited to the major axis A of extending between madial wall 12d and the lateral wall 12e
1And the minor axis A that between two side wall 12c, extends
2Each vertical pillar stiffener 12 is in major axis A
1With minor axis A
2The intersection point place limit vertical longitudinal axis or vertical line of centers VC.The major axis A of each in the vertical pillar stiffener 12
1Preferably the center C from platform is radially outward directed.The abut lower of the madial wall 12d of each vertical pillar stiffener 12 also joins the corresponding diametrical corners section 14b of spar structures 14 to.
Vertically pillar stiffener 12 is arranged on the outside of central spar structures 14 basically.The vertical axis VC of each post 12 outwards arranges distance B from the neighboring of the round corner section 14b of spar structures 14
1And from central horizontal axis or the horizontal center line HC that extends through floating drum round corner section 14b distance B outwards is set
2Therefore, according to hull configuration of the present invention, central authorities' spar structures 14 is arranged on the inboard of vertical pillar stiffener 12, so that the line S that is limited between the vertical line of centers VC between two adjacent pillars 12 is positioned at the outside of the horizontal center line HC of floating drum side section, and more preferably be positioned at the outside of the neighboring of spar structures 14.This design feature is different from the tension leg platform design (as depicted in figs. 1 and 2 all) of prior art, the tension leg platform design of prior art has independent floating drum placed in the middle between post usually, and wherein the horizontal center line of the vertical line of centers of pillar stiffener and adjacent floating drum intersects.
Fig. 5 shows the hull 11a according to the TLP of alternate embodiment of the present invention.TLP hull 11 as the embodiment of Fig. 3 and Fig. 4 is the same, and hull 11a has the central spar structures 114 that is positioned at post 12 inboards, but is different from the TLP 10 of Fig. 3 and Fig. 4, and the spar structures 114 of Fig. 5 does not comprise center moon pool opening.In addition, the neighboring of spar structures is from the radially inside spaced apart larger distance (that is, floating drum 114 neighborings are more near platform line of centers C) of vertical pillar stiffener 12.In this embodiment, the 114b of diametrical corners section of spar structures 114 is installed and be fixed in the bottom of the inside side walls 12d of each vertical pillar stiffener 12 to form having unit structure by the rectangle extension 15 between the inside side walls 12d that is fixed on floating drum corner part and post 12.
Fig. 6 illustrates the hull 11b of the TLP of a third embodiment in accordance with the invention.In this alternate embodiment, vertically each in the pillar stiffener 112 has lower end 112a and upper end 112b and limits roughly trapezoidal cross-sectional plane, this roughly trapezoidal cross-sectional plane have the sidewall 112c that opened by two non-parallel lateral spacings with the wider inside side walls 112d of parallel spaced-apart relation interconnection and narrower outside sidewall 112e.
Of the present invention various embodiment according to the embodiment that comprises Fig. 3 to Fig. 6 and modification thereof, widen intercolumniation and increased stability, and with central spar structures 14,114 radially be placed on vertical pillar stiffener 12,112 inboard has been improved the hydrodynamic performance of platform and has been reduced support span and cantilever.Simultaneously because post 12,112 and floating drum 14,114 preferably be not cylindrical, they can roughly consist of (except possible turning, it can have simple radius curve or sharp-pointed turning) by the flat metal plate.This feature reduction hull construction.
Write summary of the present invention just in order to provide a kind of mode to US Patent and trademark office and the public, nationality is determined rapidly the disclosed essence of technology and purport by this mode by rough the reading, and summary of the present invention only represents preferred embodiment and do not represent on the whole essence of the present invention.
Although shown in detail some embodiments of the present invention, the invention is not restricted to illustrated embodiment; Those skilled in the art can expect modification and the remodeling of above embodiment.Such modification and remodeling as the spirit and scope of the present invention described in this paper in.
Claims (20)
1. a tension leg platform (10) comprising:
Hull (11,11a, 11b), described hull comprises a plurality of columns (12,112), be arranged on the inboard of described post and at the lower end of described post (12a, 112a) locate spar structures (14,114) in abutting connection with described post, each in the described post has and limits from the center-point (C) of described hull directed major axis (A radially outward
1) horizontal cross sectional geometry;
Deck (13), described deck are supported on the upper end (12b, 112b) of described post and locate; And
A plurality of tension force muscle tendons (17), described tension force muscle tendon are connected to the vertical heaving to be used for remaining on described tension leg platform on the required submarine site and basically retraining described tension leg platform between described post and the seabed under tension force.
2. tension leg platform according to claim 1 (10) is characterized in that:
Described post (12,112) and described spar structures (14,114) roughly are made of flat board.
3. tension leg platform according to claim 1 (10) is characterized in that:
In described a plurality of post (12,112) each has the polygon cross-sectional plane.
4. tension leg platform according to claim 1 (10) is characterized in that:
In described a plurality of post (12,112) each has quadrangular cross section.
5. tension leg platform according to claim 4 is characterized in that:
In described a plurality of post (112) each has substantially trapezoidal cross-section, described cardinal principle trapezoidal cross-section is limited with inside side walls (112d) and the outside sidewall (112e) that parallel spaced-apart relation interconnects by the sidewall (112c) by two non-parallel lateral spacings, described outside sidewall (112e) is wider than described inside side walls (112d), thus described major axis (A
1) between described inside side walls and outside sidewall, extend.
6. tension leg platform according to claim 4 (10) is characterized in that:
In described a plurality of post (12) each has the essentially rectangular horizontal section, the inside side walls of equal wide (12d) and outside sidewall (12e) limit by having basically in described essentially rectangular horizontal section, described inside side walls and described outside sidewall are by having than described inside side walls and described outside sidewall (12d, 12e) two of larger width parallel sides interconnect with parallel spaced-apart relation to isolated sidewall (12c), thus described major axis (A
1) between described inside side walls and described outside sidewall, extend.
7. tension leg platform according to claim 1 (10) is characterized in that:
Described spar structures (14,114) is octagon.
8. tension leg platform according to claim 7 (10) is characterized in that:
In the described post (12,112) each is contiguous to the corner part (14b, 114b) of described spar structures (14,114) by extended element (15).
9. tension leg platform according to claim 1 (10) is characterized in that:
Described spar structures (14) comprises the center moon pool opening (14c) that vertically passes described spar structures (14) formation.
10. tension leg platform according to claim 9 (10) is characterized in that:
Described spar structures (14) comprises the side section (14a) orthogonal directed with four of four round corner sections to angular orientation (14b) interconnection; And
Among described side section and round corner section (14a, the 14b) each is for the general rectangular cross-sectional plane and limit horizontal axis (HC).
11. tension leg platform according to claim 9 (10) is characterized in that:
In the described post (12,112) each is contiguous in the described round corner section (14b) of described spar structures (14) by extended element (15).
12. a tension leg platform (10) comprising:
Hull (11,11a, 11b), described hull comprises the spar structures (14 that has around the neighboring of center vertical axis (C), 114), each is at lower end (12a, 112a) locate to be contiguous to the column (12 of described spar structures neighboring, 112), described spar structures is arranged on the inboard of described post, in the described post each limits the column axis (VC) of radially outward locating from described center vertical axis (C), and described column axis (VC) is apart from the described neighboring first non-zero distance (D of described spar structures
1);
Deck (13), described deck is supported by the upper end (12b, 112b) of described post; And
Tension force muscle tendon (17), described tension force muscle tendon under tension force at upper end by directly being installed to described post (12,112) tension force muscle tendon receptacle (18) is connected to described post and is connected to the seabed at lower end, in order to make described tension leg platform remain on the vertical heaving that also basically retrains described tension leg platform on the required submarine site.
13. tension leg platform according to claim 12 (10) is characterized in that:
In the described post (12,112) each has band from described center vertical axis (C) directed horizontal long axis (A radially outward
1) shape of cross section.
14. tension leg platform according to claim 13 (10) is characterized in that:
Described spar structures (14) comprises the vertical central opening (14c) that passes its formation;
Described spar structures (14) comprises the side section (14a) orthogonal directed with four round corner sections to angular orientation (14b) staggered four;
Among described side section and round corner section (14a, the 14b) each has the polygon vertical cross-section and limits horizontal longitudinal axis (HC) by described side section and round corner section (14a, 14b); And
Each column axis (VC) of each post (12,112) is radially outward located the second non-zero distance (D from the described horizontal longitudinal axis (HC) of the abutment corner section (14b) of described spar structures (14)
2).
15. tension leg platform according to claim 13 (10) is characterized in that:
In the described post (12,112) each has the polygon cross-sectional plane.
16. tension leg platform according to claim 15 (10) is characterized in that:
In the described post (112) each has substantially trapezoidal cross-section, and described cardinal principle trapezoidal cross-section is by forming with the inside side walls (112d) of parallel spaced-apart relation interconnection and the outside sidewall (112e) narrower than described inside side walls by two non-parallel lateral spacing sidewalls (112c).
17. tension leg platform according to claim 15 (10) is characterized in that:
In the described post (12) each has the essentially rectangular cross-sectional plane, the inside side walls of equal wide (12d) and outside sidewall (12e) limit described essentially rectangular cross-sectional plane by having basically, and described inside side walls and described outside sidewall interconnect with parallel spaced-apart relation to isolated sidewall (12c) by two parallel sides that have than described inside side walls and the larger width of described outside sidewall.
18. tension leg platform according to claim 12 (10) is characterized in that:
The imaginary line (S) that extends between the described column axis (VC) of two abutment post (12,112) is positioned at the outside of described spar structures neighboring.
19. tension leg platform according to claim 14 (10) is characterized in that:
Two abutment post (12,112) imaginary line (S) that extends between the described column axis (VC) is positioned at the outside of the described horizontal longitudinal axis (HC) of described side section (14a), and described side section (14a) is substantially between described two adjacent pillars.
20. a tension leg platform (10) comprising:
Annular spar structures (14), described annular spar structures forms around central opening (14c) and by a plurality of sections (14a, 14b) limiting horizontal center line (HC) in cross-sectional plane;
Column (12,112), each comfortable lower end (12a, 112a) locate to be contiguous to the outside of described spar structures (14) so that described spar structures is arranged on the inboard of described post, in the described post each limits from the vertical longitudinal axis in center (VC) that platform center (C) radially outward arranges, the vertical longitudinal axis in described center (VC) and described horizontal axis line of centers (HC) partition distance (D
2) in order to do not intersect with it; And
The vertical mooring tension force muscle tendon (17) that between described post and described seabed, connects.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/712,543 US20110206466A1 (en) | 2010-02-25 | 2010-02-25 | Tension Leg Platform With Improved Hydrodynamic Performance |
| US12/712,543 | 2010-02-25 | ||
| PCT/US2011/025916 WO2011106418A1 (en) | 2010-02-25 | 2011-02-23 | Tension leg platform with improved hydrodynamic performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102939238A true CN102939238A (en) | 2013-02-20 |
Family
ID=44476612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800195697A Pending CN102939238A (en) | 2010-02-25 | 2011-02-23 | Tension leg platform with improved hydrodynamic performance |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20110206466A1 (en) |
| EP (1) | EP2539224A1 (en) |
| JP (1) | JP2013521170A (en) |
| KR (1) | KR20120130239A (en) |
| CN (1) | CN102939238A (en) |
| AP (1) | AP2012006481A0 (en) |
| AU (1) | AU2011220815A1 (en) |
| BR (1) | BR112012021374A2 (en) |
| CA (1) | CA2791152A1 (en) |
| WO (1) | WO2011106418A1 (en) |
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| CN103231781A (en) * | 2013-04-22 | 2013-08-07 | 武汉武船海洋工程船舶设计有限公司 | Tension leg platform |
| CN103395481A (en) * | 2013-08-14 | 2013-11-20 | 大连理工大学 | Production and mooring system for sea floating type oil extraction platform and operating method thereof |
| CN103395481B (en) * | 2013-08-14 | 2015-07-22 | 大连理工大学 | Production and mooring system for sea floating type oil extraction platform and operating method thereof |
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| CN103879524B (en) * | 2014-03-19 | 2016-08-17 | 中国海洋石油总公司 | A kind of tension leg platform (TLP) |
| CN107406129A (en) * | 2015-03-19 | 2017-11-28 | 三星重工业株式会社 | Semi-submersible type offshore structure part |
| CN105564606A (en) * | 2016-02-23 | 2016-05-11 | 中国海洋石油总公司 | Method for rapidly detaching and tying back temporary buoy tying rigging of tension legs |
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| CN106697209B (en) * | 2016-12-27 | 2019-03-19 | 浙江海洋大学 | A kind of deep water tension leg platform (TLP) device and its standpipe method of real-time |
| CN107675723A (en) * | 2017-10-11 | 2018-02-09 | 上海勘测设计研究院有限公司 | Tension leg type offshore wind generating basis |
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| CN107813909A (en) * | 2017-10-13 | 2018-03-20 | 大连理工大学 | A kind of tension tendon alignment system for Hollow Microspheres Reinforced Composite Materials floating drum of connecting |
| CN109720514A (en) * | 2019-02-25 | 2019-05-07 | 中交第三航务工程局有限公司 | A kind of tendon for tension leg floatation type wind power platform |
| CN109720514B (en) * | 2019-02-25 | 2024-03-12 | 中交第三航务工程局有限公司 | Tendon for tension leg floating type wind power platform |
| CN113619746A (en) * | 2021-10-13 | 2021-11-09 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Four-upright-column semi-submersible offshore floating platform |
| CN113619746B (en) * | 2021-10-13 | 2021-12-24 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Four-upright-column semi-submersible offshore floating platform |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120130239A (en) | 2012-11-29 |
| BR112012021374A2 (en) | 2016-10-25 |
| CA2791152A1 (en) | 2011-09-01 |
| AP2012006481A0 (en) | 2012-10-31 |
| JP2013521170A (en) | 2013-06-10 |
| EP2539224A1 (en) | 2013-01-02 |
| US20110206466A1 (en) | 2011-08-25 |
| AU2011220815A1 (en) | 2012-09-20 |
| WO2011106418A1 (en) | 2011-09-01 |
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