CN101798807A - Heavy-draft truss upright-column combined platform - Google Patents
Heavy-draft truss upright-column combined platform Download PDFInfo
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- CN101798807A CN101798807A CN201010139786A CN201010139786A CN101798807A CN 101798807 A CN101798807 A CN 101798807A CN 201010139786 A CN201010139786 A CN 201010139786A CN 201010139786 A CN201010139786 A CN 201010139786A CN 101798807 A CN101798807 A CN 101798807A
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- platform
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- draft
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- ballast compartment
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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
- 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
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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
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
- B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
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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
- B63B1/12—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
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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
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/005—Equipment to decrease ship's vibrations produced externally to the ship, e.g. wave-induced vibrations
Abstract
The invention relates to a heavy-draft truss upright-column combined platform which is characterized by comprising a regular-polygon or subregular-polygon annular ballast compartment, a plurality of vertical upright columns, a drilling machine and an oil gas processing module, wherein the vertical upright columns are positioned at the angular points of the annular ballast compartment, and the drilling machine is positioned on the top of the upright columns; the annular ballast compartment adopts a permanent ballast mode, and a weight is filled in the compartment, thereby ensuring that the center of buoyancy of the platform is higher than the center of gravity of the platform; the lower parts of upright columns are connected with the annular ballast compartment to form an integral body, the upper part of each upright column is in a cylinder or subterete shell structure, the lower part of the upright columns adopts a truss structure, and the middle parts of every two adjacent upright columns are connected through a buoyancy tank structure which can provides sufficient buoyancy force for the platform; and each upright column is provided with a set of berthing ropes, and the berthing ropes are connected to benthonic anchor points in a traditional anchoring mode. The invention has the advantages of favorable moving performance, wide applicability for operating water depth, high strength of the monolithic construction, light weight and low construction cost, and can be used for deep water oil gas exploitation in severe marine environments.
Description
Technical field
The present invention relates to a kind of floating oil production platform, particularly about a kind of heavy-draft truss upright-column combined platform that is used for the exploitation of deep water marine oil and gas and has unconditional stability.
Background technology
Along with the marine oil and gas exploitation marches to deep water, traditional fixed production platform can not satisfy the needs of ocean deepwater oil and gas development, and floating oil production platform becomes the main equipment of present ocean deepwater oil and gas development.In recent years, produced the multiple floating oil production platform that is used for the ocean deepwater oil and gas development, be widely used in deep water hydrocarbon field exploitation all over the world, for example semisubmersible platform, absorb water open side type platform and tension leg platform (TLP) deeply.Above-mentioned every kind of platform all has its pluses and minuses: it hangs down that to swing exercise performance relatively poor semisubmersible platform, must adopt wet-type christmas tree when being used for as deep water hydrocarbon Development and Production platform, and the wet-type christmas tree technical sophistication, costs an arm and a leg; Dark drinking water open side type platform has good exercise performance, can use dry type tree, but it has shortcomings such as the Texas deck area is little, design difficulty big, oil gas treatment facility difficult arrangement; Tension leg platform (TLP) has good exercise performance equally, but because it uses tension leg to connect with seafloor foundation, its cost increases sharply with depth of water increase.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of unconditional stability that has, can adopt dry type tree, have big floor space, and cost increases insensitive heavy-draft truss upright-column combined platform to the depth of water.
For achieving the above object, the present invention takes following technical scheme: a kind of heavy-draft truss upright-column combined platform, it is characterized in that: it comprises the annular ballast compartment of a regular polygon or approximate regular polygon, some vertical column and a rig and oil gas processing modules that are positioned at described column top that are positioned at described annular ballast compartment angle point place; Described annular ballast compartment adopts permanent fixation ballast mode, fills weight in the cabin, guarantees that the centre of buoyancy of platform is higher than center of gravity; Described column bottom and described annular ballast compartment are connected as a single entity, and described column top is cylinder or nearly cylindrical shell structure, and trussed construction is adopted in described column bottom, and adjacent two described columns middle parts are adopted as platform and provide the floating box structure of enough buoyancy to be connected; Be provided with one group of mooring line on the every described column, and adopt traditional anchorage style that described mooring line is connected to the seabed anchor point.
The middle lower portion of described annular ballast compartment is provided with big the hanging down that is connected as a single entity with it and swings plate, and the described big vertical middle perforate of plate of swinging, and the production of hydrocarbons standpipe/drilling riser pipe that is communicated with described rig and oil gas processing module is therefrom passed; Arrange in the described trussed construction that at least 2 layers little hang down and swing plate, and every layer of described little hanging down swing plate and be positioned at described trussed construction connected node place, described big hanging down swung plate and swung plate and form and suppress the vertical structure of swinging with described little hanging down.
The shell structure side arrangement of every described column has the spirality side plate, and the shell structure inner space of every described column is split into a plurality of watertights cabin.
Described floating box structure is roomy box structure, its sharp corner rounding, the width of described floating box structure is at least 2/3 of described column diameter, and be provided with in the twice vertical watertight bulkhead in the described floating box structure inner space of described floating box structure is divided into three parts, the walkway is established in space during twice are described between the vertical watertight bulkhead, and the space in the vertical watertight bulkhead outside was divided into a plurality of watertights cabin during twice were described.
Described mooring line adopts traditional anchor chain mode, anchor chain-cable-anchor chain compound mode or full nylon cable mode.
The present invention is owing to take above technical scheme, it has the following advantages: 1, annular ballast compartment of the present invention adopts permanent fixation ballast mode, fill iron ore or other weight in the cabin, to guarantee that platform is higher than center of gravity in the centre of buoyancy at any time, thereby make platform keep darker drinking water state in-service, not only realized the unconditional stability of platform in marine environment, and guaranteed that the stability of platform and sea-keeping satisfy instructions for use.Simultaneously, the dark drinking water of tradition open side type platform is little for draft of the present invention, can effectively reduce platform construction, transportation and installation difficulty; The more traditional semi-submerged platform column of platform column diameter of the present invention is little, can effectively reduce the surface wave load that acts on platform.2, column bottom of the present invention and annular ballast compartment are connected as a single entity, the two adjacent upright middle part adopts floating box structure to be connected, floating box structure can be as the platform and integrally braced structures, also provide enough buoyancy for platform, simultaneously can also make annular ballast compartment, column and middle part floating box structure become an overall structure, thereby improve platform and integrally intensity, effectively resistant function is given the platform and integrally structure in the environmental load of platform with the loading transfer that single upright column suffers.Simultaneously, annular ballast compartment and floating box structure can effectively transmit because the uneven interaction force that loads between each column that is caused of wave and platform, therefore platform has good overall structure rigidity and intensity, can effectively reduce the tired focus stress that platform suffers connected node under the environmental load condition, improve the fatigue life of platform and integrally structure, improve the ability that platform adapts to abominable marine environment.3, column of the present invention top is cylinder or nearly cylindrical shell structure, can effectively reduce the drag force of wave to platform.Arrange the spirality side plate on every root post, swash response with the platform whirlpool that effective inhibition ocean current is caused.Trussed construction is adopted in the column bottom, can effectively reduce the environmental load that platform suffers, and alleviates platform weight, reduces the platform cost.4, the middle lower portion of annular ballast compartment of the present invention is provided with the big vertical plate that swings that is connected as a single entity with it, arrange at least 2 layers little vertical plates that swing in the trussed construction, and every layer little hangs down and to swing plate and be positioned at trussed construction connected node place, big hanging down swung plate and the little vertical structure of swinging of inhibition of hanging down and swinging plate composition platform, can effectively increase the vertical additional mass that swings of platform and swing damping with hanging down, improve the vertical exercise performance that swings of platform, thereby make platform can use dry type tree to carry out oil-gas mining.5, floating box structure of the present invention is roomy box structure, and its sharp corner rounding is to reduce the drag force of wave.Vertical watertight bulkhead is set in the floating box structure in the twice its inner space is divided into three parts, guarantee the structural redundancy degree of floating box structure after impaired, to guarantee platform safety.The walkway is established in space in the twice between the vertical watertight bulkhead, the platform operations personnel is arrived so that maintenance.The space in the vertical watertight bulkhead outside is divided into a plurality of watertights cabin in the twice, can be used as fuel oil/fresh-water tank, equipment compartment and variable ballast tank.6, the present invention adopts multiple spot anchoring locate mode location, and its cost increases insensitive to the depth of water, can be applicable to the exploitation of deep water and super deep water marine oil and gas.When platform need be shifted, can adopt traditional approach that mooring line is packed up, platform transfer is in place to other place, can save investment, increase economic efficiency.7, the present invention is owing to adopt many pillar constructions, and top rig and oil gas processing module floor space are big, top oil gas treatment facility is arranged more optimized, and improves the safety that platform operating efficiency and top facility are arranged.8, platform of the present invention vertical motion amplitude of swinging in marine environment is little, and production tree can be positioned on the Platform Deck, thereby realizes the dry type oil recovery, reduces the oil producing operation cost greatly; Simultaneously, according to the needs of oilfield development model, platform of the present invention also can adopt underwater well head, standpipe tieback in the wet type oil production method of platform, perhaps the dried wet combined type oil production method that adopts dry type or wet type to recover the oil for the different oil wells in oil field.In sum, platform motion function admirable of the present invention has unconditional stability, and it is wide to adapt to the operating water depth scope, and overall construction intensity is good, and is in light weight, and construction cost is low, can be applicable to the deep water hydrocarbon exploitation under the abominable marine environment condition.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the present invention's four column platforms
Fig. 2 is the structural representation of the present invention's four column platform annular ballast compartment
Fig. 3 is the structural representation of column of the present invention
Fig. 4 is the structural representation of the present invention's four column platform floating box structures
Fig. 5 is the cross sectional representation of floating box structure of the present invention
Fig. 6 is the structural representation of the present invention's three column platforms
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, the present invention includes the annular ballast compartment 1 of a square or squarish, four vertical columns that are positioned at annular ballast compartment 1 angle point place 2, four floating box structure 3 and a rig and oil gas processing modules 4 that are positioned at column 2 tops that are positioned at column 2 medium position places.
As shown in Figure 2, annular ballast compartment 1 adopts permanent fixation ballast mode, fill iron ore or other weight in the cabin, to guarantee that platform is higher than center of gravity in the centre of buoyancy at any time, thereby make platform keep darker drinking water state in-service, not only realized the unconditional stability of platform in marine environment, and guaranteed that the stability of platform and sea-keeping satisfy instructions for use.The middle lower portion of annular ballast compartment 1 is provided with big the hanging down that is connected as a single entity with it and swings plate 11, and big hanging down swung perforates in the middle of the plate 11, and the production of hydrocarbons standpipe/drilling riser pipe 5 that is communicated with rig and oil gas processing module 4 is therefrom passed, and can be standpipe 5 cross binding is provided.
As Fig. 1, shown in Figure 3, column 2 bottoms and annular ballast compartment 1 are connected as a single entity, and column 2 tops are cylinder or nearly cylindrical shell structure 21, can effectively reduce the drag force of wave to platform.Shell structure 21 side arrangement of every root post 2 have spirality side plate 22, swash response with the platform whirlpool that effective inhibition ocean current is caused; Shell structure 21 inner spaces of every root post 2 are split into a plurality of watertights cabin (not shown), are used to deposit drilling fluid, anchor chain etc., and provide buoyancy for platform.Trussed construction 23 is adopted in column 2 bottoms, and is furnished with at least 2 layers little in the trussed construction 23 and hangs down and swing plates 24, and every layer little hangs down and swings plate 24 and be positioned at trussed construction 23 connected node places.Trussed construction 23 can effectively reduce the environmental load that platform suffers, and alleviates platform weight, reduces the platform cost.Little vertical vertical greatly inhibition of swinging plate 11 composition platforms of swinging in plate 24 and the annular ballast compartment 1 is hung down and is swung structure, can effectively increase the vertical additional mass that swings of platform and swing damping with vertical, improves the vertical exercise performance that swings of platform.
As Fig. 4, shown in Figure 5, two adjacent upright 2 middle parts adopt floating box structure 3 to be connected, and floating box structure 3 is roomy box structure, and its sharp corner rounding is to reduce the drag force of wave.The width of floating box structure 3 is at least 2/3 of column 2 diameters, and is provided with in the twice vertical watertight bulkhead 31 in the floating box structure 3 its inner space is divided into three parts, guarantees the floating box structure 3 structural redundancy degree after impaired, to guarantee platform safety.Walkway 32 is established in space in the twice between the vertical watertight bulkhead 31, the platform operations personnel is arrived so that maintenance.The space in vertical watertight bulkhead 31 outsides is divided into a plurality of watertights cabin 33 in the twice, can be used as fuel oil/fresh-water tank, equipment compartment and variable ballast tank.Floating box structure 3 can be as the platform and integrally braced structures, also provide buoyancy for platform, simultaneously can also make annular ballast compartment 1, column 2 and middle part floating box structure 3 become an overall structure, thereby improve platform and integrally intensity, effectively resistant function is given the platform and integrally structure in the environmental load of platform with the loading transfer that single upright column 2 suffers.
As shown in Figure 1, the present invention adopts multiple spot anchoring locate mode location, is provided with one group of mooring line 6 on every root post 2, and adopts traditional anchorage style that mooring line 6 is connected to the seabed anchor point.Mooring line 6 can adopt traditional anchor chain mode, anchor chain-cable-anchor chain compound mode or full nylon cable mode.When platform need be shifted, can adopt traditional approach that mooring line 6 is packed up, other place of platform transfer is in place, can save investment, increase economic efficiency.
In the foregoing description, annular ballast compartment also can adopt four limits above polygon or triangle (as shown in Figure 6), the structural similarity of the overall structure of many columns or three column platforms and four column platforms, the just corresponding increase of quantity of column 2, floating box structure 3 and mooring line 6 is so repeat no more.
In the foregoing description, rig and oil gas processing module 4 select for use conventional rig of the prior art and oil gas treatment facility to carry out the equipment configuration according to the difference of oilfield development model, can reduce the technical risk that the present invention uses greatly.
The present invention only describes with the foregoing description; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solution of the present invention; all improvement and equivalents of individual component being carried out according to the principle of the invention all should not got rid of outside protection scope of the present invention.
Claims (7)
1. heavy-draft truss upright-column combined platform, it is characterized in that: it comprises the annular ballast compartment of a regular polygon or approximate regular polygon, some vertical column and a rig and oil gas processing modules that are positioned at described column top that are positioned at described annular ballast compartment angle point place; Described annular ballast compartment adopts permanent fixation ballast mode, fills weight in the cabin, guarantees that the centre of buoyancy of platform is higher than center of gravity; Described column bottom and described annular ballast compartment are connected as a single entity, and described column top is cylinder or nearly cylindrical shell structure, and trussed construction is adopted in described column bottom, and adjacent two described columns middle parts are adopted as platform and provide the floating box structure of enough buoyancy to be connected; Be provided with one group of mooring line on the every described column, and adopt traditional anchorage style that described mooring line is connected to the seabed anchor point.
2. a kind of heavy-draft truss upright-column combined platform as claimed in claim 1, it is characterized in that: the middle lower portion of described annular ballast compartment is provided with big the hanging down that is connected as a single entity with it and swings plate, and described big hanging down swung the middle perforate of plate, and the production of hydrocarbons standpipe/drilling riser pipe that is communicated with described rig and oil gas processing module is therefrom passed; Arrange in the described trussed construction that at least 2 layers little hang down and swing plate, and every layer of described little hanging down swing plate and be positioned at described trussed construction connected node place, described big hanging down swung plate and swung plate and form and suppress the vertical structure of swinging with described little hanging down.
3. a kind of heavy-draft truss upright-column combined platform as claimed in claim 1 is characterized in that: the shell structure side arrangement of every described column has the spirality side plate, and the shell structure inner space of every described column is split into a plurality of watertights cabin.
4. a kind of heavy-draft truss upright-column combined platform as claimed in claim 2 is characterized in that: the shell structure side arrangement of every described column has the spirality side plate, and the shell structure inner space of every described column is split into a plurality of watertights cabin.
5. as claim 1 or 2 or 3 or 4 described a kind of heavy-draft truss upright-column combined platforms, it is characterized in that: described floating box structure is roomy box structure, its sharp corner rounding, the width of described floating box structure is at least 2/3 of described column diameter, and be provided with in the twice vertical watertight bulkhead in the described floating box structure inner space of described floating box structure is divided into three parts, the walkway is established in space during twice are described between the vertical watertight bulkhead, and the space in the vertical watertight bulkhead outside was divided into a plurality of watertights cabin during twice were described.
6. as claim 1 or 2 or 3 or 4 described a kind of heavy-draft truss upright-column combined platforms, it is characterized in that: described mooring line adopts traditional anchor chain mode, anchor chain-cable-anchor chain compound mode or full nylon cable mode.
7. a kind of heavy-draft truss upright-column combined platform as claimed in claim 5 is characterized in that: described mooring line adopts traditional anchor chain mode, anchor chain-cable-anchor chain compound mode or full nylon cable mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101397867A CN101798807B (en) | 2010-03-30 | 2010-03-30 | Heavy-draft truss upright-column combined platform |
| PCT/CN2010/001947 WO2011120209A1 (en) | 2010-03-30 | 2010-12-02 | Deep draught combined platform with truss column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101397867A CN101798807B (en) | 2010-03-30 | 2010-03-30 | Heavy-draft truss upright-column combined platform |
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| Publication Number | Publication Date |
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| CN101798807A true CN101798807A (en) | 2010-08-11 |
| CN101798807B CN101798807B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101397867A Active CN101798807B (en) | 2010-03-30 | 2010-03-30 | Heavy-draft truss upright-column combined platform |
Country Status (2)
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| CN (1) | CN101798807B (en) |
| WO (1) | WO2011120209A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120209A1 (en) * | 2010-03-30 | 2011-10-06 | 中国海洋石油总公司 | Deep draught combined platform with truss column |
| CN102296565A (en) * | 2011-05-26 | 2011-12-28 | 中国海洋石油总公司 | Deep-water ring-shaped floating type artificial harbor |
| CN102616344A (en) * | 2012-03-22 | 2012-08-01 | 中国海洋石油总公司 | Heavy draught truss type floating platform |
| CN103010417A (en) * | 2012-12-21 | 2013-04-03 | 天津大学 | Offshore wind power floating foundation suitable for small water plane with water depth below 100m |
| 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 |
| CN103711459A (en) * | 2012-09-29 | 2014-04-09 | 天津市海王星海上工程技术股份有限公司 | Basement-type water surface connecting cylinder type underwater dry oil production device |
| CN103953022A (en) * | 2014-05-05 | 2014-07-30 | 中国海洋石油总公司 | Supersized wellhead platform |
| CN105059489A (en) * | 2015-07-15 | 2015-11-18 | 中国海洋石油总公司 | Constantly stable offshore nuclear power platform |
| CN105857533A (en) * | 2016-05-10 | 2016-08-17 | 中国海洋石油总公司 | Three-stand-column floating platform |
| CN106741699A (en) * | 2017-01-16 | 2017-05-31 | 天津大学 | A kind of cylinders integrated-type open side type platform |
| CN109866888A (en) * | 2019-03-25 | 2019-06-11 | 中国海洋石油集团有限公司 | The dry tree semi-submerged platform heave plate of one kind and main hull relative motion inhibit device |
| CN114348194A (en) * | 2022-01-13 | 2022-04-15 | 东北石油大学 | Suspension type FRP concrete combined guyed tower type damping platform and construction method thereof |
| CN114604376A (en) * | 2022-02-17 | 2022-06-10 | 中国海洋石油集团有限公司 | Novel floating type fan foundation with box type heave plates |
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| CN109866887A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | The oblique self-stabilization type semi-submerged platform of column outside a kind of band |
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| CN102296565A (en) * | 2011-05-26 | 2011-12-28 | 中国海洋石油总公司 | Deep-water ring-shaped floating type artificial harbor |
| 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 |
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| CN103711459B (en) * | 2012-09-29 | 2016-12-21 | 天津市海王星海上工程技术股份有限公司 | The basal disc formula water surface connects cartridge type underwater dry-type extracting device of oil |
| CN103711459A (en) * | 2012-09-29 | 2014-04-09 | 天津市海王星海上工程技术股份有限公司 | Basement-type water surface connecting cylinder type underwater dry oil production device |
| CN103010417A (en) * | 2012-12-21 | 2013-04-03 | 天津大学 | Offshore wind power floating foundation suitable for small water plane with water depth below 100m |
| CN103953022A (en) * | 2014-05-05 | 2014-07-30 | 中国海洋石油总公司 | Supersized wellhead platform |
| CN105059489A (en) * | 2015-07-15 | 2015-11-18 | 中国海洋石油总公司 | Constantly stable offshore nuclear power platform |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011120209A1 (en) | 2011-10-06 |
| CN101798807B (en) | 2012-04-18 |
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