CN101475049A - DDMS deep draft column platform - Google Patents
DDMS deep draft column platform Download PDFInfo
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- CN101475049A CN101475049A CNA2009100102729A CN200910010272A CN101475049A CN 101475049 A CN101475049 A CN 101475049A CN A2009100102729 A CNA2009100102729 A CN A2009100102729A CN 200910010272 A CN200910010272 A CN 200910010272A CN 101475049 A CN101475049 A CN 101475049A
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Abstract
The invention discloses a DDMS heavy draught upright post platform, which belongs to the technical field of ocean engineering and ship engineering, and is applicable to oil gas drilling and producing of an abyssal sea area. The upright post platform is characterized by consisting of four heavy draught upright posts, an upright post of a center well, a heave plate, a transverse pontoon bridge, a soft cabin, an anchoring system, a riser system and a platform upper part, wherein the four heave draught upright posts are arranged on four angular points of a cross section of the platform; the upright post of the center well is arranged in the center of the cross section; a K-shaped beam is arranged on the top of a hard cabin to connect the upright posts and the center well; the heave plate and the hard cabin of the platform are directly integrated into a whole, and are horizontally arranged on the upright posts; the transverse pontoon bridge is arranged on the bottom of the hard cabin to connect each upright post; and the soft cabin in large volume is arranged on the bottom of the platform and is filled with ballast weight. The platform has the advantages that building difficulty and cost of the platform are lower; the structure of the center well makes the upright posts protected; elasticity of global design and use space of the platform upper part are larger; hydrodynamic performance can be improved, so the platform has excellent motion performance; application of a dry-type tree is supported; and the platform is applicable to various conditions of different sea areas and sea conditions.
Description
Technical field
The invention belongs to ocean engineering and Marine engineering technical field, relate to a kind of DDMS (Deep DraftMulti-Spars) deep draft column platform, be applicable to the oil gas drilling and the production in marine site, deep-sea.
Background technology
At present, the main type of deep water platform in the world has semisubmersible SEMI, tension leg TLP and Spar.Semisubmersible platform is through the development of decades comparative maturity on design and building technology, existingly at present surpasses 90 platforms and is used for deepwater drilling.But the exercise performance of semisubmersible platform is not supported the dry tree system not as good as tension leg and Spar platform.The semisubmersible platform drinking water is more shallow, and center of gravity is on the centre of buoyancy, and the stability problem under the extreme sea condition can not be ignored.
Tension leg platform links to each other with seafloor foundation by the tension force key, hangs down that it is minimum to swing response, but the platform cost is to the projected depth sensitivity, and the tension leg platform depth of water is recorded as 1425m at present.The vibration of vertical high frequency is more outstanding to the fatigue problem that the tension force key produces in addition.
The Spar platform relies on its good exercise performance in recent years in the Gulf of Mexico, obtained the favor of numerous oil companies and ocean engineering technology company.Water under first Spar platform Neptune in 1997 as first generation Spar platform, has only been built 3 and has just been replaced by second generation Truss Spar.Truss Spar has replaced the firm system shell of Classic Spar to increase added mass of entrained water and viscous damping is provided as main body stage casing and the vertical plate that swings of use with space truss structure, improved the platform hydrodynamic property, though absorb water more shallowly relatively, have good exercise performance equally.Compare first generation Classic Spar,, reduced rolled steel dosage, thereby reduced fabrication cost though Truss Spar has lost the oil storage function.Third generation polystyle platform CellSpar was born in 2004, and lower construction difficulty and cost are its biggest advantage, but useful load is restricted.Though the Spar platform has advantages such as good stable and exercise performance, it is bigger to build difficulty, the platform upper narrow space, and the deficiency of aspect such as effectively usable floor area is less, and the main body vortex-induced vibration is obvious has also caused people's attention.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of later-model deep draft column platform, and this platform can significantly reduce flat-bed laid down cost and build difficulty, and its hydrodynamic performance is improved and has good exercise performance.
Technical scheme of the present invention is as follows:
DDMS moldeed depth draft column platform is made of the column spars (hard cabin) of 4 deep drafts, center well column spar, the main portions such as swinging plate, horizontal pontoon bridge, soft cabin, mooring system, riser systems (soft cabin) and platform upper of hanging down.
The column of 4 deep drafts is arranged on 4 angle points of platform cross-sectional plane, is mainly platform buoyancy is provided.
The center well column is positioned at cross-section center, and diameter is bigger slightly than the column of 4 deep drafts, opens to seawater as center well and in the bottom, and standpipe is therefrom passed, and protects standpipe effectively, reduces wave and ocean current impacts standpipe.
The DDMS platform adopts the top-tensioned risers system, and utilizes the keg float that is connected riser top that required tension force is provided.
The soft freight space of DDMS is separated by a distance with hard cabin in the bottom of hard cabin column, wherein is full of high density liquid or metal, and platform center-of-gravity position (CG) is positioned under the position, centre of buoyancy (CB); Under extreme environment, therefore platform also has good stable.
Hard cabin is connected with the column of soft cabin by 4 minor diameters.At the vertical plate that swings of three levels of hard cabin drinking water position configuration, connect column and center well of 4 deep drafts, provide overall lateral rigidity to platform, and effectively improve the flat-bed hydrodynamic performance.Each layer hangs down and to swing plate and is made up of 4 triangle daughter boards, and the stull of being settled by four levels, 45 degree separates, stull connection angle point and center well column.Horizontal pontoon bridge is installed in bottom in hard cabin, connects the column of 4 deep drafts of platform on the one hand, can also avoid eccentric as variable ballast tank in order to adjust the flat-bed center-of-gravity position.Be provided with K type beam at hard top, cabin and connect each column, further increase the whole lateral rigidity of main platform body.
The DDMS platform uses the displacement of mooring system bound level direction, and mooring line one end is installed on the platform deck other end and fixes in the seabed.Platform upper adopts the double-ply truss structure, partly is made up of boring tower and equipment, staff dormitory, helicopter platform, workshop and power houses etc.
The design of DDMS deep draft column platform is an interactively process, comprises that platform feature and designing requirement, size of main body estimation, platform weight and deck are arranged, platform ballast tank and aspects such as hard cabin design, empty cabin displacement, anchoring system, standpipe design, load applies, design calculation, platform stable checking computations and platform response checking computations.
Deep draft column platform DDMS of the present invention has the following advantages:
1, hard cabin is made up of the less relatively column of diameter, and flat-bed construction difficulty and cost are lower; Platform hard cabin each several part can have been saved certain platform cost of transportation in dock production nearby and installation.
2, osed top center well structure is protected the standpipe that passes wherein, avoids the impact of wave or ocean current;
3, the hard cabin allocation plan of multicolumn makes the DDMS platform have bigger upper body usage space, has obtained bigger unit design elasticity;
4, hang down and to swing plate structure a large amount of added mass of entrained waters is provided, and can evoke certain viscous damping, hydrodynamic performance is improved, and has good exercise performance and particularly hangs down and swing response.
5, support the use of dry tree, further reduce the oil-gas mining cost;
6, be applicable to multiple different marine site and sea conditions.
7, the hard cabin allocation plan of polystyle can reduce vortex-induced vibration VIV effect by upsetting coming off of whirlpool.
Description of drawings
Fig. 1 is an overall structure scheme drawing of the present invention.
Fig. 2 is that platform upper of the present invention is arranged scheme drawing.
Fig. 3 is overall structure scheme drawing 1-1 section-drawing of the present invention.
Fig. 4 is overall structure scheme drawing 2-2 section-drawings of the present invention.
Fig. 5 is a mooring system scheme drawing of the present invention.
Fig. 6 is a riser systems scheme drawing of the present invention.
Among the figure: 1 platform upper; 2 K type beams; 3 deep draft columns; 4 center well columns; 5 hang down swings plate;
6 horizontal pontoon bridges; 7 soft cabins; 8 mooring systems; 9 riser systems.
101 helicopter platforms; 102 personnel's board and lodgings; 103 control workshops; 105 boring towers;
104 drilling modules, 106 supply of power modules; 107 platform workshops; 108 hoisting cranes.
The specific embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and accompanying drawing.
Deep draft column formula platform of the present invention by platform upper 1, K type beam 2, deep draft column spars3, center well spar4, hang down swing plate 5, laterally pontoon bridge 6, soft cabin 7, mooring system 8, riser systems 9 are formed.
Described platform upper 1 adopts double-deck truss structure, is beneficial to ventilation, and is favourable to equipment safety operation.Helicopter platform 101, personnel's board and lodging 102, control workshop 103 are positioned at the platform front end.Boring tower 105 is at center deck, on the center well.Drilling module 104 is positioned at the deck larboard and only depends on boring tower, and platform supply of power module 106 is turbo generator for example, is positioned at the deck starboard.Platform workshop 107 is positioned at the deck afterbody.Two hoisting cranes 108 lay respectively at the port and starboard on deck.
The horizontal gird of described K type beam 2 connects the column (3) and the center well column (4) of deep draft, the column or the center well of 45 degree cant beam one ends and deep draft, and the other end is connected with horizontal gird.
Described deep draft column is arranged in 4 angle points of main platform body, and each column is made of some cuddies, wherein is full of air, and radical function is to provide buoyancy for platform.
Described center well column 4 length are identical with hard cabin, and diameter is bigger.Center well is a hollow structure, and the bottom is opened to seawater, and standpipe therefrom passes up to subsea wellheads.The DDMS platform is also supported the use of fluid pressure type standpipe, and whether the platform owner can install the osed top center well according to the actual conditions decision.
The described vertical plate 5 that swings is made up of triangular form daughter board 502 and level 45 degree stulls 501.Stull 501 is used to connect deep draft column 3 and center well column 4, increases integral structure rigidity.Hanging down and swinging plate is the very big thin plate of horizontal area, during the platform vertical motion, normal orientation can evoke big added mass of entrained water, sharp-pointed dull and stereotyped border provides certain viscous damping simultaneously, adjust vertical the swinging of DDMS flat-bed and adjust to natural period on the feature period of a wave, the bigger response of generation of avoiding resonating.
Described horizontal pontoon bridge 6 connects deep draft column 3 in the bottom, be provided with level 45 degree stulls 601 simultaneously.Laterally pontoon bridge simultaneously also as variable ballast tank to adjust the flat-bed center-of-gravity position, avoid eccentric.
Described soft cabin 7 is positioned at the platform bottommost, is connected with platform deep draft column 3 by small diameter cylinders.Soft cabin provides a large amount of ballasts, wherein has been full of high density liquid or metal.
Described mooring system 8 is used to retrain the platform horizontal displacement.Mooring line is made up of chain-cable-chain structure, and an end is installed on the platform deck other end and fixes in the seabed, and the position of fairlead is consistent with the vertical position of platform center of gravity, can avoid anchor hawser to produce bad additional bending moment when platform rotates.The DDMS platform adopts 12 mooring lines, is numbered 801～812, is divided into 4 groups, on the hard cabin of symmetric arrangement.Be 90 degree between every group of mooring line, 3 mooring lines in each group are the direction angle of 5 degree respectively.The DDMS platform is the buoyancy aid compliant structure, so the surging restoring force that mooring system provides is less, and its natural period is usually between 150～350s.
Described riser systems 9 is made up of 1 drilling riser pipe 901 and 8 production risers 902.The quantity of standpipe directly determines the size of center well column 4.All standpipes are top-tensioned, provide tension force by the buoyancy bucket.
Claims (5)
1, a kind of DDMS deep draft column platform, comprise 4 deep draft columns (3), a center well column (4), hang down and swing plate (5), horizontal pontoon bridge (6), soft cabin (7), mooring system (8), riser systems (9) and platform upper (1), it is characterized in that: 4 deep draft columns (3) are positioned at 4 angle points of platform cross-sectional plane, center well column (4) is positioned at cross-section center, K type beam (2) is positioned at deep draft column (3) top and connects deep draft column (3) and center well column (4), hanging down, it is directly integrated with deep draft column (3) to swing plate (5), level is installed on the deep draft column (3), laterally pontoon bridge (6) connects deep draft column (3) in deep draft column (3) bottom, and the soft cabin (7) of platform bottom configuration large volume also is full of ballast.
2, a kind of DDMS deep draft column platform according to claim 1, its feature also is: center well column (4) is positioned at cross-section center, and its bottom is opened to seawater, and standpipe therefrom passes.
3, a kind of DDMS deep draft column platform according to claim 1, its feature also is: the horizontal gird of K type beam (2) connects deep draft column (3) and center well column (4), 45 degree cant beam one end and deep draft column (3) or center well columns (4), the other end is connected with the horizontal gird of K type beam (2).
4, a kind of DDMS deep draft column platform according to claim 1, its feature also is: the vertical plate (5) that swings of each layer is made up of triangular form daughter board (502) and level 45 degree stulls (501); Hang down and to swing plate (5) and directly be integrated on the deep draft column (3).
5, a kind of DDMS deep draft column platform according to claim 1, its feature also is: soft cabin (7) are positioned at the platform bottommost, with deep draft column (3) bottom distance is arranged, be connected less than the column of deep draft column (3) and with the column (3) of deep draft by diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100102729A CN101475049B (en) | 2009-01-20 | 2009-01-20 | DDMS deep draft column platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100102729A CN101475049B (en) | 2009-01-20 | 2009-01-20 | DDMS deep draft column platform |
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| Publication Number | Publication Date |
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| CN101475049A true CN101475049A (en) | 2009-07-08 |
| CN101475049B CN101475049B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100102729A Expired - Fee Related CN101475049B (en) | 2009-01-20 | 2009-01-20 | DDMS deep draft column platform |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167141A (en) * | 2011-03-07 | 2011-08-31 | 中船重工船舶设计研究中心有限公司 | Box-shaped truss type four-stand column deep water platform system with asymmetric soft cabin |
| WO2011153677A1 (en) * | 2010-06-09 | 2011-12-15 | 中国海洋石油总公司 | Integrally equipped heavy draught floating type oil production platform with unconditional stability and offshore installation method thereof |
| CN102501949A (en) * | 2011-12-27 | 2012-06-20 | 大连理工大学 | Truss type platform with multiple upright columns |
| US9032896B2 (en) | 2010-06-09 | 2015-05-19 | China National Offshore Oil Corporation | Grouting and welding combined connection joint applied to a deepwater floating type platform and an offshore installation method thereof |
| CN105307929A (en) * | 2013-07-03 | 2016-02-03 | 挪威国家石油公司 | Fairing and method |
| CN106741699A (en) * | 2017-01-16 | 2017-05-31 | 天津大学 | A kind of cylinders integrated-type open side type platform |
| US9725961B2 (en) | 2013-04-12 | 2017-08-08 | Statoil Petroleum As | Fairing |
| TWI624406B (en) * | 2017-08-14 | 2018-05-21 | Semi-submersible support platform and positioning method thereof | |
| CN111439347A (en) * | 2020-04-20 | 2020-07-24 | 中海油研究总院有限责任公司 | Self-installation single-upright-column platform and installation method thereof |
| CN113212675A (en) * | 2021-04-29 | 2021-08-06 | 浙江大学 | Semi-submersible drilling platform with drilling frame arranged on main deck right above upright post |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070166109A1 (en) * | 2006-01-13 | 2007-07-19 | Yun Ding | Truss semi-submersible offshore floating structure |
| CN201347192Y (en) * | 2009-01-20 | 2009-11-18 | 大连理工大学 | DDMS heavy draft column platform |
-
2009
- 2009-01-20 CN CN2009100102729A patent/CN101475049B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011153677A1 (en) * | 2010-06-09 | 2011-12-15 | 中国海洋石油总公司 | Integrally equipped heavy draught floating type oil production platform with unconditional stability and offshore installation method thereof |
| US8733266B2 (en) | 2010-06-09 | 2014-05-27 | China National Offshore Oil Corporation | Integrative deep draft floating production platform with unconditional stability and offshore installation method thereof |
| US9032896B2 (en) | 2010-06-09 | 2015-05-19 | China National Offshore Oil Corporation | Grouting and welding combined connection joint applied to a deepwater floating type platform and an offshore installation method thereof |
| CN102167141A (en) * | 2011-03-07 | 2011-08-31 | 中船重工船舶设计研究中心有限公司 | Box-shaped truss type four-stand column deep water platform system with asymmetric soft cabin |
| CN102501949A (en) * | 2011-12-27 | 2012-06-20 | 大连理工大学 | Truss type platform with multiple upright columns |
| CN102501949B (en) * | 2011-12-27 | 2014-10-29 | 大连理工大学 | Truss type platform with multiple upright columns |
| US9725961B2 (en) | 2013-04-12 | 2017-08-08 | Statoil Petroleum As | Fairing |
| CN105307929A (en) * | 2013-07-03 | 2016-02-03 | 挪威国家石油公司 | Fairing and method |
| US10274107B2 (en) | 2013-07-03 | 2019-04-30 | Statoil Petroleum As | Fairing and method |
| US10690265B2 (en) | 2013-07-03 | 2020-06-23 | Equinor Energy As | Fairing and method |
| CN106741699A (en) * | 2017-01-16 | 2017-05-31 | 天津大学 | A kind of cylinders integrated-type open side type platform |
| TWI624406B (en) * | 2017-08-14 | 2018-05-21 | Semi-submersible support platform and positioning method thereof | |
| CN111439347A (en) * | 2020-04-20 | 2020-07-24 | 中海油研究总院有限责任公司 | Self-installation single-upright-column platform and installation method thereof |
| CN113212675A (en) * | 2021-04-29 | 2021-08-06 | 浙江大学 | Semi-submersible drilling platform with drilling frame arranged on main deck right above upright post |
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| Publication number | Publication date |
|---|---|
| CN101475049B (en) | 2012-07-04 |
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