CN102616344A - Heavy draught truss type floating platform - Google Patents
Heavy draught truss type floating platform Download PDFInfo
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- CN102616344A CN102616344A CN2012100783182A CN201210078318A CN102616344A CN 102616344 A CN102616344 A CN 102616344A CN 2012100783182 A CN2012100783182 A CN 2012100783182A CN 201210078318 A CN201210078318 A CN 201210078318A CN 102616344 A CN102616344 A CN 102616344A
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Abstract
The invention relates to a heavy draught truss type floating platform, which is characterized by comprising a lower buoyancy tank. A square hole is arranged in the center of the lower buoyancy tank, a plurality of watertight cabins are arranged in the lower buoyancy tank at intervals, counterweights used for pressing the cabins are disposed in the watertight cabins, a heave plate which is integrally connected with the lower buoyancy tank is disposed at the bottom of the lower buoyancy tank, a plurality of through holes are disposed on the heave plate, a plurality of connecting holes are arranged on the top of the lower buoyancy tank, a space truss which is integrally welded with the lower buoyancy tank is fixedly connected to the lower buoyancy tank by the connecting holes, the top of the space truss penetrates through a square hole disposed in the center of an upper buoyancy tank, a circle of a watertight channel is disposed in the upper buoyancy tank, a plurality of watertight cabins are arranged on two sides of the watertight channel at intervals, a plurality of upright columns with large sections are arranged on the top of the upper buoyancy tank, a group of mooring ropes connected with a seabed is arranged on each upright column, and oil and gas treating modules and well drilling modules are arranged on the insides and the tops of decks. The heavy drought truss type floating platform is widely used for offshore oil exploitation.
Description
Technical field
The present invention relates to a kind of floating platform, particularly about a kind of heavy-draft truss formula floating platform.
Background technology
Along with the expansion day by day of marine mining scope, exploitation deep water oil has become the important front edge position of oil industry.In the deep water hydrocarbon exploitation,, generally can be divided into dry type oil recovery, wet type oil recovery and do wet compound type oil recovery etc. according to the difference of oil recovery pattern.Compare with dry tree, wet-type christmas tree is installed under water, and not only cost of investment is higher, also is unfavorable for regulating and controlling.Particularly cross lowly when even not fuel-displaced when oil productivity, need to use and move drilling rig and take out christmas tree system under water, carry out remedial work, this has increased operating cost greatly.Usually, the maintenance of christmas tree system is more frequent, and maintenance cost can reach the half the of the total service expenditure of platform, because the economic loss that shut-down is brought is then more serious.Therefore, adopt dry tree can significantly reduce the platform cost.
Swinging moves has strict restriction because the dry type oil extraction system to the relative motion of platform and standpipe, particularly hangs down, and therefore, in the deep water floating platform, has only tension leg platform and deep draft open side type platform can satisfy dry type oil recovery requirement at present.Yet the problem that these two kinds of platforms also exist in the deep water exploitation separately limits with using, and when the depth of water surpassed 1500 meters, the cost of tension leg platform sharply rose, and the design and installation difficulty of tension leg is bigger; And deep draft open side type flat-bed Texas deck area is smaller, design difficulty big, oil gas treatment facility difficult arrangement; It driedly drags, sets upright with the afloat installation of top module etc. and need to drop into very big cost in addition, also has certain risk.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of floor space big, can whole towage, exercise performance is good, can adapt to different oil recovery patterns, has the heavy-draft truss formula floating platform of unconditional stability.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of heavy-draft truss formula floating platform; It is characterized in that: it comprises that a center has the following buoyancy tank of square hole, is arranged at intervals with some watertight compartments in the said following buoyancy tank, is provided with the weight that is used for ballasting in the said watertight compartment; Said down buoyancy tank bottom is provided with the vertical plate that swings that is connected as a single entity with it; Said vertical swinging has been located at some through holes on the plate; The said box top of floating downward is provided with some connecting bores; Be fixedly connected with a space truss that is welded as a whole with it through said connecting bore, said space truss top is passed and is located in the square hole that the buoyancy tank center is provided with on, and said going up is provided with a circle watertight passage in the buoyancy tank; The both sides of said watertight passage are at a distance from being provided with some watertight compartments; Said come-up box top is provided with some heavies in section column; Each said column is provided with one group of mooring fast that connects the seabed; Each captive joint one deck, said column top; The bottom on said deck and the corresponding fixed connecting piece that is provided with in said truss top, inside, said deck and top are provided with oil gas processing module and drilling module.
Said space truss intersects steel pipe by some vertical steel pipes, horizontal steel tube, X and supporting steel pipe is formed; The bottom that connecting bore is fixedly connected on down buoyancy tank is passed in said vertical steel pipe bottom; The top of said vertical steel pipe is fixed on bottom, said deck through fixed connecting piece; The bottom that said vertical steel pipe and X intersect steel pipe intersects on the said connecting bore, and said space truss is welded as a whole when shipyard is built with following buoyancy tank.
When said space truss all was contracted between the said column, said upward buoyancy tank and said spacing between the buoyancy tank down were 0.5 meter.
The global shape of said upper and lower buoyancy tank is a kind of in triangle, quadrangle, hexagon and the octagon.
The cross sectional shape of said column is rounded, square, a kind of in polygon and the similar round.
Each corner of the outline of said upper and lower buoyancy tank all is provided with and is fillet.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention can be through the flexible upper and lower two-layer buoyancy tank of space truss owing to being provided with; And in each watertight compartment of following buoyancy tank, loaded the weight that is used for ballasting; Therefore in the oil producing operation process, can make two-layer buoyancy tank be deployed condition, can guarantee that not only floating platform is higher than center of gravity in the centre of buoyancy in the oil producing operation process, make the present invention no matter when can both keep the unconditional stability state; And making down the buoyancy tank drinking water darker, bearing load is littler.2, the present invention is owing to be provided with some columns heavy in section in the come-up box top; And floating platform column of the present invention is darker than traditional semisubmersible platform column drinking water; Make buoyancy tank away from wave action, significantly reduced wave induction force and moment of flexure that last buoyancy tank receives.3, the present invention is owing to be provided with upper and lower two-layer buoyancy tank; Obtain higher added mass and damping through increasing displacement, improved platform and hung down and swing orbit period, make it away from period of a wave; Be difficult to resonate; Reduced to hang down and swung motion amplitude, the present invention is had than the better vertical exercise performance that swings of traditional semisubmersible platform, therefore can satisfy dry type oil recovery requirement.4, the present invention is owing to be arranged to have Collapsible structure with floating platform, therefore can be under contraction state, adopts dried drag or the wet mode of dragging is transported to the place of erection with floating platform integral body, and not only migration conveniently and has reduced traffic cost.5, the present invention is owing at oil gas processing module and the drilling module of building place or harbour assembling top, deck, therefore compare with drilling module with the oil gas processing module at sea is installed, and cost of installation reduces greatly.6, the present invention increases the area on deck owing to adopt a plurality of pillar constructions heavy in section, is convenient to operation and arranges oil gas processing module and drilling module, therefore can improve the safety that deck operating efficiency and facility are arranged.7, the present invention is owing to connect one and hang down and swing plate in the following bottom of buoyancy tank square hole, can effectively increase floating platform and hang down and swing added mass and swing damping with hanging down, and improves the vertical exercise performance that swings of floating platform; And the vertical plate that swings provide effective twelve Earthly Branches support can for transport pipe/drilling riser pipe, has therefore reduced transport pipe, the suffered moment of flexure of standpipe.8, the present invention supplies the watertight passage of the convenient walking of staff owing in last buoyancy tank, be arranged at intervals with a circle; And in the both sides of watertight passage at a distance from being provided with some watertight compartments; Guarantee to go up structural redundancy degree and the platform stability of floating box structure after impaired, so guarantee the floating platform safety.It is widely used among the offshore oil exploitation.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is a contraction state front view of the present invention
Fig. 3 is that buoyancy tank swings the plate structure birds-eye view with hanging down under the present invention
Fig. 4 is the floating box structure birds-eye view of going up of the present invention
Fig. 5 is the representative side section view of floating box structure in the present invention
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the center that the present invention includes has the following buoyancy tank 1 of square hole, being arranged at intervals with some watertight compartments 11 in the buoyancy tank 1 down, in watertight compartment 11, is provided with the weight that is used for ballasting; Following buoyancy tank 1 bottom is provided with the vertical plate 2 that swings that is connected as a single entity with it; Hang down to swinging and be located at some through holes 21 on the plate 2; Following buoyancy tank 1 top is provided with some connecting bores 3; Be fixedly connected with a space truss 4 that is welded as a whole with it through connecting bore 3, space truss 4 tops are passed and are located in the square hole that buoyancy tank 5 centers are provided with on, in last buoyancy tank 5, are provided with a circle watertight passage 51; The both sides of watertight passage 51 are at a distance from being provided with some watertight compartments 52; The top of last buoyancy tank 5 is provided with some heavies in section column 6; Each column 6 is provided with one group of mooring fast 7 that connects the seabed; Top captive joint one deck 8 of each column 6; The corresponding fixed connecting piece 9 that is provided with the top of space truss 4 in the bottom on deck 8,8 inside, deck and top are provided with oil gas processing module and drilling module 10.
In the foregoing description; Like Fig. 1, Fig. 2, shown in Figure 3; Space truss 4 by some vertical steel pipe 41, horizontal steel tube 42, X intersects steel pipe 43 and supporting steel pipe 44 is formed, the bottom that connecting bore 3 is fixedly connected on down buoyancy tank 1 is passed in vertical steel pipe 41 bottoms, vertically the top of steel pipe 41 is fixed on 8 bottoms, deck through fixed connecting piece 9; Vertical steel pipe 41 intersects on the connecting bore 3 with the bottom that X intersects steel pipe 43, and space truss 4 is welded as a whole when shipyard is built with following buoyancy tank 1.
In the foregoing description, when the towage operating mode, when space truss 4 all was contracted between the column 6, the spacing between last buoyancy tank 5 and the following buoyancy tank 1 was 0.5 meter.
In the foregoing description, as shown in Figure 1, after arriving the operating area, with space truss 4 and buoyancy tank 1 decline expansion down, be one with the outside of column 6 and the welded top of space truss 4 through load-carrying element 53 through weight-lifting equipment on the deck 8.
In the foregoing description, upper and lower buoyancy tank 5,1 is a roomy box type construction, and all adoptable global shape of its casing is a kind of in triangle, quadrangle, hexagon and the octagon.
In the foregoing description, the cross sectional shape of heavy in section column 6 all can adopt a kind of in circle, square, polygon and the similar round.
In the foregoing description, in order to reduce upper and lower buoyancy tank 5,1 suffered gradeability, each corner of the outline of upper and lower buoyancy tank 5,1 all is provided with is fillet.
In the foregoing description, the weight of the ballasting that the watertight compartment in the following buoyancy tank 1 is filled is iron sand or other weight, is higher than center of gravity with the centre of buoyancy that guarantees floating platform, makes floating platform have unconditional stability.
In the foregoing description; Like Fig. 4, shown in Figure 5; Circle watertight passage 51 in the last buoyancy tank 5 can be used for the walkway; Some watertight compartments 52 of the both sides of watertight passage 51 can be used for depositing fuel oil, fresh water tank, equipment compartment and variable ballast tank etc., to guarantee the buoyancy tank 5 structural redundancy degree after impaired, guarantee the safety of floating platform.
In the foregoing description, like Fig. 1, shown in Figure 4, each column 6 is all located through one group of mooring fast 7 multiple spots anchoring locate mode, and adopts traditional anchorage style mooring fast 7 to be connected to each anchor point in seabed.
In the foregoing description, a kind of in truss-like deck construction, the box-shaped deck construction can adopt on deck 8.
In the foregoing description, what oil gas processing module and drilling module 10 can be according to oilfield development models is different, selects for use conventional equipment of the prior art to be configured, and repeats no more at this.
In the foregoing description, mooring fast 7 can adopt prior art, repeats no more at this.
Operating process of the present invention may further comprise the steps:
1) the present invention is when the towage operating mode; Space truss 4 is captiveed joint with 8 bottoms, deck through the fixed connecting piece 9 at the top of vertical steel pipe 41; The overall shrinkage of space truss 4 makes down buoyancy tank 1 press close to go up buoyancy tank 5 between each column 6 at this moment, and floating platform integral body is contraction state;
2) after floating platform arrives the operating area, each mooring fast 7 each anchor point with the seabed is fixed up, guarantee platform stable;
3) cut away fixed connecting piece 9, buoyancy tank 1 drops to the regional position of under-water operation to adopt weight-lifting equipment to reach space truss 4 down;
4) outside with column 6 is one through load-carrying element 53 with space truss 4 welded top;
5) fill seawater, iron sand or other weight in each watertight compartment 11 in the respectively downward buoyancy tank 1, make floating platform arrive the designed draft position;
6) respectively the transport pipe under the submarine well is passed the vertical through hole 21 on the plate 2 that swings, connect oil gas processing module and drilling module 10;
7) start oil gas processing module and drilling module 10, can begin oil producing operation.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the structure of each parts and connection mode etc. all can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. heavy-draft truss formula floating platform, it is characterized in that: it comprises that a center has the following buoyancy tank of square hole, saidly is arranged at intervals with some watertight compartments in the buoyancy tank down, is provided with the weight that is used for ballasting in the said watertight compartment; Said down buoyancy tank bottom is provided with the vertical plate that swings that is connected as a single entity with it; Said vertical swinging has been located at some through holes on the plate; The said box top of floating downward is provided with some connecting bores; Be fixedly connected with a space truss that is welded as a whole with it through said connecting bore, said space truss top is passed and is located in the square hole that the buoyancy tank center is provided with on, and said going up is provided with a circle watertight passage in the buoyancy tank; The both sides of said watertight passage are at a distance from being provided with some watertight compartments; Said come-up box top is provided with some heavies in section column; Each said column is provided with one group of mooring fast that connects the seabed; Each captive joint one deck, said column top; The bottom on said deck and the corresponding fixed connecting piece that is provided with in said truss top, inside, said deck and top are provided with oil gas processing module and drilling module.
2. a kind of heavy-draft truss formula floating platform as claimed in claim 1; It is characterized in that: said space truss intersects steel pipe by some vertical steel pipes, horizontal steel tube, X and supporting steel pipe is formed; The bottom that connecting bore is fixedly connected on down buoyancy tank is passed in said vertical steel pipe bottom; The top of said vertical steel pipe is fixed on bottom, said deck through fixed connecting piece; The bottom that said vertical steel pipe and X intersect steel pipe intersects on the said connecting bore, and said space truss is welded as a whole when shipyard is built with following buoyancy tank.
3. a kind of heavy-draft truss formula floating platform as claimed in claim 1 is characterized in that: when said space truss all was contracted between the said column, said upward buoyancy tank and said spacing between the buoyancy tank down were 0.5 meter.
4. a kind of heavy-draft truss formula floating platform as claimed in claim 2 is characterized in that: when said space truss all was contracted between the said column, said upward buoyancy tank and said spacing between the buoyancy tank down were 0.5 meter.
5. like claim 1 or 2 or 3 or 4 described a kind of heavy-draft truss formula floating platforms, it is characterized in that: the global shape of said upper and lower buoyancy tank is a kind of in triangle, quadrangle, hexagon and the octagon.
6. like claim 1 or 2 or 3 or 4 described a kind of heavy-draft truss formula floating platforms, it is characterized in that: the cross sectional shape of said column is rounded, square, a kind of in polygon and the similar round.
7. a kind of heavy-draft truss formula floating platform as claimed in claim 5 is characterized in that: the cross sectional shape of said column is rounded, square, a kind of in polygon and the similar round.
8. like claim 1 or 2 or 3 or 4 or 7 described a kind of heavy-draft truss formula floating platforms, it is characterized in that: each corner of the outline of said upper and lower buoyancy tank all is provided with and is fillet.
9. a kind of heavy-draft truss formula floating platform as claimed in claim 5, it is characterized in that: each corner of the outline of said upper and lower buoyancy tank all is provided with and is fillet.
10. a kind of heavy-draft truss formula floating platform as claimed in claim 6, it is characterized in that: each corner of the outline of said upper and lower buoyancy tank all is provided with and is fillet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100783182A CN102616344A (en) | 2012-03-22 | 2012-03-22 | Heavy draught truss type floating platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100783182A CN102616344A (en) | 2012-03-22 | 2012-03-22 | Heavy draught truss type floating platform |
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| CN102616344A true CN102616344A (en) | 2012-08-01 |
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| CN2012100783182A Pending CN102616344A (en) | 2012-03-22 | 2012-03-22 | Heavy draught truss type floating platform |
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| CN103010416A (en) * | 2012-12-17 | 2013-04-03 | 中国海洋石油总公司 | Semi-submersible platform with heave plates and installing method of heave plates |
| CN103343529A (en) * | 2013-07-17 | 2013-10-09 | 中交二航局第三工程有限公司 | Movable steel pipe raft snorkeling over-water construction 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 |
| WO2014037710A1 (en) * | 2012-09-04 | 2014-03-13 | Mojo Maritime Limited | Apparatus |
| CN104973225A (en) * | 2015-07-08 | 2015-10-14 | 中国海洋石油总公司 | Floating production platform |
| CN105059489A (en) * | 2015-07-15 | 2015-11-18 | 中国海洋石油总公司 | Constantly stable offshore nuclear power platform |
| CN105083486A (en) * | 2015-08-03 | 2015-11-25 | 上海海洋大学 | Temporary fixing device and construction method thereof |
| CN105857533A (en) * | 2016-05-10 | 2016-08-17 | 中国海洋石油总公司 | Three-stand-column floating platform |
| CN106926989A (en) * | 2017-04-19 | 2017-07-07 | 合肥学院 | A kind of combined simple ocean platform and its construction method |
| CN106968630A (en) * | 2017-05-16 | 2017-07-21 | 中海油研究总院 | A kind of deep water blowout emergency offsets installation system and its application method under water |
| CN107140138A (en) * | 2017-05-19 | 2017-09-08 | 中国海洋石油总公司 | A kind of dry tree oil storage semi-submersible type production platform of deep drinking water |
| CN107972828A (en) * | 2017-12-13 | 2018-05-01 | 中海石油(中国)有限公司上海分公司 | A kind of offshore platform |
| CN108341028A (en) * | 2018-03-29 | 2018-07-31 | 上海交通大学 | A kind of combined column depth drinking water floating platform |
| CN109823484A (en) * | 2019-01-18 | 2019-05-31 | 中国海洋石油集团有限公司 | A kind of floating box structure inhibiting platform heaving |
| CN110155262A (en) * | 2019-06-04 | 2019-08-23 | 中国海洋石油集团有限公司 | A kind of dry tree semisubmersible platform with self installation function |
| CN114313128A (en) * | 2022-01-13 | 2022-04-12 | 东北石油大学 | Floating box mooring type ocean damping platform and construction method thereof |
| CN115021171A (en) * | 2022-04-28 | 2022-09-06 | 广船国际有限公司 | Cable connection structure, removal flotation tank and semi-submerged ship |
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| 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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| CN105059489A (en) * | 2015-07-15 | 2015-11-18 | 中国海洋石油总公司 | Constantly stable offshore nuclear power platform |
| CN105083486A (en) * | 2015-08-03 | 2015-11-25 | 上海海洋大学 | Temporary fixing device and construction method thereof |
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| CN106926989B (en) * | 2017-04-19 | 2018-10-16 | 合肥学院 | A kind of combined simple ocean platform and its construction method |
| CN106926989A (en) * | 2017-04-19 | 2017-07-07 | 合肥学院 | A kind of combined simple ocean platform and its construction method |
| CN106968630A (en) * | 2017-05-16 | 2017-07-21 | 中海油研究总院 | A kind of deep water blowout emergency offsets installation system and its application method under water |
| CN107140138A (en) * | 2017-05-19 | 2017-09-08 | 中国海洋石油总公司 | A kind of dry tree oil storage semi-submersible type production platform of deep drinking water |
| CN107140138B (en) * | 2017-05-19 | 2019-10-25 | 中国海洋石油集团有限公司 | A kind of dry tree oil storage semi-submersible type production platform of deep drinking water |
| CN107972828A (en) * | 2017-12-13 | 2018-05-01 | 中海石油(中国)有限公司上海分公司 | A kind of offshore platform |
| CN108341028A (en) * | 2018-03-29 | 2018-07-31 | 上海交通大学 | A kind of combined column depth drinking water floating platform |
| CN109823484A (en) * | 2019-01-18 | 2019-05-31 | 中国海洋石油集团有限公司 | A kind of floating box structure inhibiting platform heaving |
| CN110155262A (en) * | 2019-06-04 | 2019-08-23 | 中国海洋石油集团有限公司 | A kind of dry tree semisubmersible platform with self installation function |
| CN110155262B (en) * | 2019-06-04 | 2020-03-03 | 中国海洋石油集团有限公司 | Trunk tree semi-submersible platform with self-installation function |
| CN114313128A (en) * | 2022-01-13 | 2022-04-12 | 东北石油大学 | Floating box mooring type ocean damping platform and construction method thereof |
| CN114313128B (en) * | 2022-01-13 | 2024-03-29 | 东北石油大学 | Floating box mooring type ocean damping platform and construction method thereof |
| CN115021171A (en) * | 2022-04-28 | 2022-09-06 | 广船国际有限公司 | Cable connection structure, removal flotation tank and semi-submerged ship |
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Application publication date: 20120801 |