CN2815871Y - Strong-anti-outer-force high stability on-sea platform - Google Patents
Strong-anti-outer-force high stability on-sea platform Download PDFInfo
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- CN2815871Y CN2815871Y CN 200520027268 CN200520027268U CN2815871Y CN 2815871 Y CN2815871 Y CN 2815871Y CN 200520027268 CN200520027268 CN 200520027268 CN 200520027268 U CN200520027268 U CN 200520027268U CN 2815871 Y CN2815871 Y CN 2815871Y
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Abstract
The utility model discloses a strong-anti-outer-force high stability on-sea platform, which belongs to the technical improvement of an on-sea platform and can be used for oil extraction, gas extraction, mining and various civil and military on-sea movable buildings. The platform structure comprises a supporting structure and a platform which is arranged on the platform structure. The utility model is characterized in that the supporting structure is composed of tension legs, a lower truss frame, a floating tank and an upper pipe guiding frame, which are orderly arranged from the upper part to the lower part, wherein the tension legs are in a vertical type or an oblique pulling type; the floating tank is provided with a single tank or a plurality of tanks; the upper pipe guiding frame is in a fixing type or a self elevating type. The utility model has the advantages that the strong-anti-outer-force high stability on-sea platform in maximum reduces the level environmental load exerted on the platform, particularly the acting force of wind, wave, tide, flow and ice to improve the stability and security of the platform. The utility model has the advantage of low productive cost.
Description
Technical field
The utility model relates to the novel offshore platform that a kind of external force resistance is strong, stability is high, belongs to the improvement technology of offshore platform.Can be used for recovering the oil, the sea of gas production, mining and other various civil and militaries (or in other deep water) Collapsible building.
Background technology
Recovering the oil in the shallow sea to adopt various bottom supported platforms such as jack up or jacket-type.But after the depth of water reached certain depth, bottom supported platform can not meet the demands.So people have proposed various deepwater work platforms such as tension leg type and SPAR formula.As shown in Figure 1, 2, existing tension leg type and SPAR formula platform supporting construction are followed successively by from down to up: tension leg section, truss section and floating drum section.Wherein floating drum is looked the platform size and job requirement can be adopted monobuoy or plural many floating drums.Oblique zipper can also be adopted in the side of tension leg.The effect of truss section be make move on the centre of buoyancy of system and down-shift of working center to keep stable.
Above-mentioned platform supporting construction is because floating drum is positioned at the place, sea, and the diameter of floating drum is bigger, and therefore the level of whole supporting leg wind-engaging, ripple, tide, stream, ice is bigger to application force, causes whole flat-bed less stable.Moreover, the suffered buoyancy of floating drum also can cause the tension force of tension leg to produce bigger cyclical variation owing to flood tide and ebb tide changes greatly, brings big difficulty to marine operation, and the intensity and the stability that threaten sleeve pipe.So the variation range that how to reduce suffered horizontal force of platform and vertical buoyancy to prolong the platform life-span, to improve its stability extremely important.
Summary of the invention
The purpose of this utility model is to provide a kind of external force resistance stiff stability high offshore platform.This offshore platform has the high characteristics of external force resistance stiff stability.
The utility model is realized by following proposal, the high offshore platform of a kind of external force resistance stiff stability.This platform structure comprises that supporting construction and the platform on it constitute.It is characterized in that supporting construction is followed successively by tension leg, bottom truss, floating drum and upper guide pipe support from the bottom to top.
Above-mentioned tension leg is high low type or cable-stayed type;
Above-mentioned floating drum is monotubular or many;
Above-mentioned jacket is fixed type or jack up structure.
One of advantage of the present utility model is to have reduced the application force of platform suffered level environment load, especially wind, ripple, tide, stream, ice to greatest extent, thereby strengthens the stable and safe reliability of flat-bed, and manufacturing cost is relatively low.Because the wave intensity of force, so the dominant ideas of this patent are to reduce structure top to meet the corrugated area as far as possible and moves down the buoyancy aid on daying corrugated along with the exponential manner decay is pressed in the increase of the degree of depth as far as possible.Another advantage of the present invention is the influence that buoyancy that floating drum produces is not subjected to the eustasy that caused by factors such as morning and evening tides, thereby significantly reduced the rangeability of tension leg pulling force, therefore more guaranteed flat-bed stability, make the standpipe vertical displacement littler, also can reduce the consumption and the technical requirements of tension leg material.The present invention is applicable to monotubular buoyancy aid and many buoyancy aid platforms, is to be the flat-bed improvement that base growth goes out to existing tension leg type (TLP) and SPAR formula platform and with its notion.
Description of drawings
Fig. 1 is existing single-column buoy platform structural representation;
Fig. 2 is existing multicolumn buoy platform structural representation;
Fig. 3 is the improvement single-column buoy platform structural representation that the utility model proposed;
Fig. 4 is the improvement multicolumn buoy platform structural representation that the utility model proposed;
Fig. 5 is the jack up single-column buoy platform structural representation that the utility model proposed;
Fig. 6 is the jack up multicolumn buoy platform structural representation that the utility model proposed.
Among the figure: 1---the platform topside, 2---the sea level, 3---floating drum, 4---the bottom truss, 5---vertical tension leg, 6---oblique slide fastener, 7---the seabed, 8---wave force is along the depth profile rule, and 9---upper guide pipe support or jack up structure.
The specific embodiment
Claims of the present utility model comprises any following improved form based on tension leg platform or SPAR platform principle: the floating drum that is about to large volume (daying corrugated) moves down, and with any type of supporting construction of meeting the corrugated for a short time floating drum is connected with upper brace.The floating drum mode comprises open side type floating drum and plural polystyle floating drum.Can only adopt vertical tension leg, also can join again and give oblique slide fastener.Flat-bed size and operating depth can change arbitrarily, only set forth advantage of the present invention in conjunction with two examples (but being not limited thereto) below.
Example one is the single-column buoy platform, and its operating depth is 500 meters, and the platform upper dimension is 20 * 20 meters, heavy 8000KN, and center of gravity is in above 5 meters of the water surface.
When the form design platform before the employing, long 35 meters of floating drum, 10 meters of diameters, thick 0.1 meter, heavy 8576KN.As not considering filling water in the floating drum, the keg float center of gravity is positioned at following 12.5 meters of the water surface, and buoyancy is 23562KN, and the centre of buoyancy is positioned at following 15 meters of the water surface.50 meters of bottom rise of a truss, heavy 5400KN, design gravity are positioned at following 40 meters of floating drum bottom, and buoyancy is 692.3KN, and center of gravity overlaps with the centre of buoyancy.At this moment, upper brace-floating drum-trussing center of gravity is positioned at following 20.26 meters of the water surface, and the centre of buoyancy is positioned at following 16.57 meters of the water surface, and the centre of buoyancy is in more than the center of gravity, and system is in stabilized conditions.1397.6 tons of the shared steel of floating drum and bottom truss.
When adopting form design platform of the present utility model, design upper guide pipe support is high 15 meters, heavy 600KN, and center of gravity is positioned at following 2.5 meters of the water surface, and the centre of buoyancy is positioned at following 5 meters of the water surface, and buoyancy is 500KN.Long 30 meters of floating drum, 10 meters of diameters, thick 0.1 meter, heavy 7351KN.As not considering filling water in the floating drum, the keg float center of gravity is positioned at following 25 meters of the water surface, and buoyancy is 23562KN, and the centre of buoyancy is positioned at following 25 meters of the water surface.50 meters of bottom rise of a truss, heavy 6025KN, center of gravity is positioned at following 40 meters of floating drum bottom, and buoyancy is 772.4KN, and center of gravity overlaps with the centre of buoyancy.At this moment, whole platform-floating drum-trussing center of gravity is positioned at following 28.54 meters of the water surface, and the centre of buoyancy is positioned at following 26.31 meters of the water surface, and the centre of buoyancy is in more than the center of gravity, and system is in stabilized conditions.Still 1397.6 tons of upper guide pipe support, floating drum and the shared steel of bottom truss.
In this example, compared, a little less than employing the utility model design-calculated platform stable seems relatively with former design.But owing to the suffered level of platform has reduced greatly to load, so its stability has obtained enhancing in fact on the contrary.Certainly, strengthen flat-bed stability again, can be at an easy rate realize with the method that increases or move down the weight (thereby making the platform and integrally down-shift of working center) of bottom truss as needs.Because the variable quantity of the suffered vertical buoyancy load of this novel platform has significantly reduced, thereby make the designing requirement to standpipe and tension leg reduce greatly, thereby can significantly reduce cost.And jacket and Design of Truss and building technology are very ripe, so very limited to the influence of cost.
Example two is four post buoy platforms, and its operating depth is 500 meters, and the platform upper dimension is 40 * 40 meters, heavy 20000KN, and center of gravity is in above 10 meters of the water surface.
When the form design platform before the employing, long 40 meters of each floating drum, 10 meters of diameters, thick 0.1 meter, heavy 9802KN.As not considering filling water in the floating drum, the keg float center of gravity is positioned at following 10 meters of the water surface, and buoyancy is 23562 * 4KN, and the centre of buoyancy is positioned at following 15 meters of the water surface.50 meters of bottom rise of a truss, heavy 21600KN, center of gravity is positioned at following 40 meters of floating drum bottom, and buoyancy is 2767KN, and the centre of buoyancy overlaps with center of gravity.At this moment, upper brace-floating drum-trussing center of gravity is positioned at following 21.09 meters of the water surface, and the centre of buoyancy is positioned at following 16.57 meters of the water surface, and the centre of buoyancy is in more than the center of gravity, and system is in stabilized conditions.6080.8 tons of the shared steel of floating drum and bottom truss.
When adopting form design platform of the present utility model, long 20 meters of upper guide pipe support, heavy 3000KN, center of gravity is positioned at following 3 meters of the water surface, and the centre of buoyancy is positioned at following 7 meters of the water surface, and buoyancy is 2000KN.Each floating drum is high 30 meters, 10 meters of diameters, thick 0.1 meter, heavy 7351KN.As not considering filling water in the floating drum, the keg float center of gravity is positioned at following 25 meters of the water surface, and buoyancy is 23562 * 4KN, and the centre of buoyancy is positioned at following 25 meters of the water surface.Long 50 meters of bottom truss, heavy 28404KN, center of gravity is positioned at following 40 meters of floating drum bottom, and buoyancy is 3641.5KN, and the centre of buoyancy overlaps with center of gravity.At this moment, system's center of gravity is positioned at following 34.85 meters of the water surface, and the centre of buoyancy is positioned at following 26.64 meters of the water surface, and the centre of buoyancy is in more than the center of gravity, and system is in stabilized conditions.Still 6080.8 tons of upper guide pipe support, floating drum and the shared steel of bottom truss.
Compared with former design, novel flat-bed stability has obtained reinforcement in this example under same horizontal loads, adds the suffered level of platform and has reduced greatly to load, so its stability will more strengthen.Simultaneously,, thereby make the requirement to standpipe and tension leg decrease, also can significantly reduce cost because the variable quantity of the suffered vertical buoyancy load of this novel platform significantly reduced.And jacket and Design of Truss and building technology are also very ripe, so very limited to the influence of cost.
Claims (4)
1, the high offshore platform of a kind of external force resistance stiff stability, this platform structure comprise that supporting construction and the platform on it constitute, and is characterized in that supporting construction is followed successively by tension leg, bottom truss, floating drum and upper guide pipe support from the bottom to top.
2, by the described offshore platform of claim 1, it is characterized in that tension leg is high low type or cable-stayed type.
3,, it is characterized in that floating drum is monotubular or many by the described offshore platform of claim 1.
4, by the described offshore platform of claim 1, it is characterized in that the upper guide pipe support is fixed type or jack up structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200520027268 CN2815871Y (en) | 2005-09-06 | 2005-09-06 | Strong-anti-outer-force high stability on-sea platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520027268 CN2815871Y (en) | 2005-09-06 | 2005-09-06 | Strong-anti-outer-force high stability on-sea platform |
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| CN2815871Y true CN2815871Y (en) | 2006-09-13 |
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| CN 200520027268 Expired - Fee Related CN2815871Y (en) | 2005-09-06 | 2005-09-06 | Strong-anti-outer-force high stability on-sea platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339255B (en) * | 2008-08-12 | 2011-05-18 | 中国海洋石油总公司 | Method for accurately measuring and calculating self-elevating drilling platform well position |
| CN101516721B (en) * | 2006-09-21 | 2012-07-04 | 国际壳牌研究有限公司 | Floating structure motion suppression systems and methods |
| CN103129715A (en) * | 2012-03-16 | 2013-06-05 | 中国海洋石油总公司 | Conduit-rack semi-submersible type oil-extraction platform |
| 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 |
-
2005
- 2005-09-06 CN CN 200520027268 patent/CN2815871Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516721B (en) * | 2006-09-21 | 2012-07-04 | 国际壳牌研究有限公司 | Floating structure motion suppression systems and methods |
| CN101339255B (en) * | 2008-08-12 | 2011-05-18 | 中国海洋石油总公司 | Method for accurately measuring and calculating self-elevating drilling platform well position |
| CN103129715A (en) * | 2012-03-16 | 2013-06-05 | 中国海洋石油总公司 | Conduit-rack semi-submersible type oil-extraction platform |
| 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 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |