CN103482025B - Novel inner cupola single point mooring unit - Google Patents
Novel inner cupola single point mooring unit Download PDFInfo
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- CN103482025B CN103482025B CN201310412386.2A CN201310412386A CN103482025B CN 103482025 B CN103482025 B CN 103482025B CN 201310412386 A CN201310412386 A CN 201310412386A CN 103482025 B CN103482025 B CN 103482025B
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Abstract
The invention discloses a kind of inner cupola single point mooring unit.It includes single-point floating drum, turret structure, riser deck, receipts ball deck and slip-ring combination and mooring line；Described single-point floating drum is connected with described turret structure；Described mooring line is located at the bottom of described single-point floating drum；Described riser deck and described receipts ball deck are sequentially arranged on the top of described turret structure；Described slip-ring combination is located on described receipts ball deck, and described slip-ring combination includes several liquid slip rings, electric slip ring or optical fiber slip ring.The weather window that persistently can work when connecting and free is required relatively low by the single point mooring unit of the present invention, in the case of being difficult to have the satisfied requirement continuing weather window without continuous 23 weeks needed for the single-point tieback of kickoff mechanism particularly with monsoon climate in the winter time, the present invention has obvious advantage.
Description
Technical field
The present invention relates to a kind of inner cupola single point mooring unit.
Background technology
Along with the development of China's offshore oil cause, floating production storage offloading (FPSO) becomes offshore oil and gas
The key facility of field exploitation, the exploitation to offshore oil and gas field plays vital effect.According to different marine sites and sea
Condition condition, FPSO the most in the world mainly uses following three kinds of Mooring Arrangements: single point mooring system, multipoint mooring
System and dynamic positioning system.Single point mooring system is owing to can resist severe extreme environmental conditions, and has wind vane
Effect, becomes the unique selection of severe marine site FPSO location.General Bohai Offshore FPSO uses the soft firm arm of pylon
Single point mooring system, marginal basins FPSO uses inner cupola single point mooring system.Inner cupola single point mooring system is positioned at
FPSO stem, be marginal basins FPSO produce and position indispensable ingredient, carry well liquid and electricity defeated
Send.Taking place frequently district it is known that marginal basins belongs to typhoon, inner cupola single point mooring system is sent out under severe sea condition successively
More raw problems, cause the biggest impact to the safety in production in oil field.Therefore, expect a kind of Operation and Maintenance simple,
Adapt to emerging of the novel inner cupola single point mooring system form that extreme sea condition ability is strong, number of channels restriction is low.
Summary of the invention
It is an object of the invention to provide a kind of inner cupola single point mooring unit, the inner cupola single point mooring unit behaviour of the present invention
Work is safeguarded simply, by force and number of channels restriction is low to adapt to extreme sea condition ability.
A kind of inner cupola single point mooring unit provided by the present invention include single-point floating drum, turret structure, riser deck,
Receive ball deck and slip-ring combination and mooring line；
Described single-point floating drum is connected with described turret structure；Described mooring line is located at the bottom of described single-point floating drum；
Described riser deck and described receipts ball deck are sequentially arranged on the top of described turret structure；
Described slip-ring combination is located on described receipts ball deck, and described slip-ring combination includes several liquid slip ring, electric slip rings
Or optical fiber slip ring.
In above-mentioned inner cupola single point mooring unit, described riser deck and described receipts ball deck can arrange various anchor
Auxiliary facility needed for some single-points such as machine, receiving ball tube.
In above-mentioned inner cupola single point mooring unit, described single point mooring system also includes gantry structure, and described gantry is tied
Structure is set on the top of described inner cupola single point mooring unit, and described gantry structure is connected with described slip-ring combination,
In use, described gantry structure is connected with the main deck of FPSO, and described gantry structure is conducive in production process
Operation and maintenance.
In above-mentioned inner cupola single point mooring unit, described single-point floating drum is provided with several ballast tanks, when needs Suo Shu
When single-point floating drum is freed, described single-point floating drum can be made to sink to below the water surface by ballast；When needs described single-point floating drum returns
When connecing, carried by row and the buoyancy of described single-point floating drum self realizes overall tieback；The material of described single-point floating drum can be
Conventional steel structure.
In above-mentioned inner cupola single point mooring unit, the bottom of described single-point floating drum is provided with some mooring lines；Described system
Pool cable can be that packet type is arranged or is evenly arranged；Can be used between mooring line arrange standpipe and cable.
The present invention still further provides a kind of FPSO being provided with inner cupola single point mooring unit, and it includes that FPSO is originally
Body and described inner cupola single point mooring unit；
Described single-point floating drum and described turret structure are located in the cabin of described FPSO body, the end of described single-point floating drum
Portion is connected with the bottom of described cabin, and the top of described turret structure is connected with the main deck of described cabin；
Described riser deck, described receipts ball deck and described slip-ring combination are all located on described main deck.
In above-mentioned FPSO, the rotating part of described slip-ring combination is connected with the hull of described FPSO body, can
With FPSO body 360 degree motion, the stationary part of described slip-ring combination and described riser deck, described receipts ball
Deck, described turret structure are connected with described single-point floating drum, to keep geo-stationary；
Described turret structure and described single-point floating drum, by metal (upper transmission mooring line, standpipe and the load of cable, make
FPSO rotates around metal (upper, thus ensures that turret structure and floating drum are static.
The present invention provide inner cupola single point mooring unit can with specific reference to its reply typhoon extreme environmental conditions ability,
Realize typhoon period and free function and typhoon period does not free function.Exceed design condition when experience and typhoon change cannot be resisted
The invasion and attack do not surveyed or need to lie up maintenance time, described single-point floating drum need to be separated with described FPSO, first will be vertical
Pipe and cable are connected with single-point floating drum, by kickoff mechanism by described single-point floating drum (now after freeing from riser deck
Containing standpipe, cable and mooring line) separate with FPSO, then make described single-point floating drum sink by described load chamber
Below upstream face about 40 meters；During when typhoon harsh environmental conditions but not less than design condition, single-point floating drum is not understood
De-, an evacuating people, close a well in.
Due to the fact that the above technical scheme of employing, have the advantage that
1, the single point mooring unit of the present invention can resist a-hundred-year and above severe sea condition, described single point mooring system
Can conveniently free when mooring line destroys or environmental forecasting exceedes design extreme environment and withdraw, safety is high；
2, the slip-ring combination of the single point mooring unit of the present invention is arranged on fore castle deck, it is simple to outdoor keep in repair and grasps
Make；
3, the quantity of single-point passage is limited low by the single point mooring unit of the present invention, can produce need according to the oil field in later stage
Want, increase corresponding slip ring；
4, the single point mooring unit of the present invention has and frees function, mooring line, standpipe and cable is fastened in advance
On single-point floating drum, it is achieved integrated connection, general needs can complete for 3 days tieback, reduces the off-time；
5, the programming of freeing of the kickoff mechanism in the single point mooring system of the present invention is manually operable, it is ensured that 24 is little
Time interior free, can greatly avoid hydraulic pressure to free program and the most not use under brought case of emergency inextricable
Possible or hydraulic locking apparatus pretension lifting force is unable to maintain that required size；
6, the weather window that persistently can work when connecting and free is required relatively low, especially by the single point mooring unit of the present invention
It is difficult to have for monsoon climate in the winter time and meets without the persistently gas of continuous 2-3 week needed for the single-point tieback of kickoff mechanism
In the case of waiting the requirement of window, the present invention has obvious advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation (not including gantry structure) of inner cupola single point mooring unit of the present invention.
Fig. 2 is the structural representation (including gantry structure) of inner cupola single point mooring unit of the present invention.
Fig. 3 is the structural representation that the present invention includes the FPSO of inner cupola single point mooring unit.
Fig. 4 is the structural representation of the mooring line in inner cupola single point mooring unit of the present invention.
In figure, each labelling is as follows: 1 single-point floating drum, 2 turret structure, 3 riser deck, 4 receipts ball deck, 5 slip rings
Combination, 6 structure connectors, 7 gantry structures, 8 mooring lines.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, but the invention is not limited in following example.
As it is shown in figure 1, the single point mooring system that the present invention provides includes single-point floating drum 1, turret structure 2, riser deck
3, ball deck 4 and slip-ring combination 5 are received；Wherein, this single-point floating drum 1 and turret structure 2 are by structure connector 6 phase
Connect, conveniently free and tieback.Wherein riser deck 3 and receipts ball deck 4 are sequentially arranged on the top of turret structure 2,
Riser deck 3 and receipts ball deck 4 can arrange the auxiliary facility needed for some single-points such as various windlass, receiving ball tube.
Slip-ring combination 5 in the present invention includes multiple slip ring, it is achieved that well liquid and the conveying of electricity, and it is arranged on receipts ball first
On plate 4, the selection of slip ring kind is typically based on the needs of the exploitation of oil gas field, and need to take into account the potential of regionl development
Demand, is equipped with liquid slip ring, high-tension electricity slip ring or communication slip ring.Selection for single-point liquid slip ring is typically based on FPSO
Disposal ability and the delivery requirements in periphery oil field determine, high-tension electricity slip ring need to be defeated according to electric power maximum on FPSO
Sending ability to determine, communication slip ring is determined according to communication need between platform and FPSO.
The present invention by arrange the gantry structure 7 that is connected with slip-ring combination 5 can realize the operation to slip-ring combination 5 and
Maintenance.
Single-point floating drum 1 arranges multiple ballast tank, for realizing freeing of this single point mooring system, when needs single-point
When floating drum is freed, single-point floating drum can be made to sink to below the water surface by ballast；When needs single-point floating drum tieback, by row
Carrying and the buoyancy of single-point floating drum self realizes overall tieback, the material of this single-point floating drum is conventional steel structure.
Being provided with many mooring lines 8, standpipe and cable on the bottom of this single-point floating drum 1, wherein mooring line is packet type
Arrange, for being connected with FPSO, and beneficially standpipe and the layout of cable.
The FPSO including above-mentioned inner cupola single point mooring unit provided by the present invention, as it is shown on figure 3, it includes
The inner cupola single point mooring unit stated and FPSO body, single-point floating drum 1 and turret structure 2 are located at FPSO body
In cabin, turret structure 2 is connected by the main deck of upper bearing (metal) with FPSO body cabin, and single-point floating drum 1 passes through
Lower bearing is connected with the bottom of cabin；Single-point floating drum 1 is connected with seabed with anchor by mooring line 8；Riser deck
3, receive ball deck 4 and slip-ring combination 5 is located on the main deck of this FPSO body cabin, owing to maintenance and operation all exist
Outdoor, working place is open, and safety is high.
In the inner cupola single point mooring unit of the present invention, the cabin phase of the rotating part of slip-ring combination 5 and FPSO body
Connect, with FPSO body 360 degree motion, the stationary part of described slip-ring combination and riser deck, receipts ball first
Plate, turret structure are connected with single-point floating drum, to keep geo-stationary；Turret structure passes through upper bearing (metal), single-point floating drum
By lower bearing transmission mooring line, standpipe and the load of cable, make FPSO body rotate around metal (upper, thus protect
Card turret structure and floating drum are static.
The yardstick of inner cupola single point mooring unit shown in Fig. 1 is as follows:
FPSO tonnage: 15 tons；
Design conditions: 500 years one chances；
Single-point spar diameter: 10.5 meters；
Single-point cabin moon pool diameter is about: 9 meters；
Single-point floating drum is conducted oneself with dignity: 402 tons；
Turret structure diameter: 7 meters；
Ball bearing diameter: 7.8 meters；
Free program: manual operation；
Mooring line is arranged: 3 groups × 4 (between group and group, angle is 120 degree, and the angle between root and root is 4 degree)
Mooring line length: 1200 meters；Standpipe, cable form: the steep wave form (steep wave) of band float；
Anchor: piled anchor；
Liquid slip ring: 1 is standby with 2；
High-tension electricity slip ring: 1 is standby with 1；
Communication slip ring: 1 uses.
Claims (3)
1. an inner cupola single point mooring unit, it is characterised in that: it include single-point floating drum, turret structure,
Riser deck, receipts ball deck and slip-ring combination and mooring line；
Described single-point floating drum is connected by structure connector with described turret structure；Described single-point floating drum is provided with
Several ballast tanks；
Described mooring line is located at the bottom of described single-point floating drum；
Described riser deck and described receipts ball deck are sequentially arranged on the top of described turret structure；
Described slip-ring combination is located on described receipts ball deck, and described slip-ring combination includes several liquid slip ring, electricity
Slip ring or optical fiber slip ring；
Described single point mooring unit also includes that gantry structure, described gantry structure are set in described inner cupola single-point system
On the top of pool device, and described gantry structure is connected with described slip-ring combination.
Inner cupola single point mooring unit the most according to claim 1, it is characterised in that: described single-point floats
The bottom of cylinder is provided with some mooring lines；Described mooring line is that packet type is arranged or is evenly arranged.
3. the FPSO being provided with inner cupola single point mooring unit, it is characterised in that: it includes FPSO body
With inner cupola single point mooring unit described in claim 1 or 2；
Described single-point floating drum and described turret structure are located in the cabin of described FPSO body, described single-point floating drum
Bottom be connected with the bottom of described cabin, the top of described turret structure is connected with the main deck of described cabin
Connect；
Described riser deck, described receipts ball deck and described slip-ring combination are all located on described main deck；
The rotating part of described slip-ring combination is connected with the hull of described FPSO body, described slip-ring combination
Stationary part is connected with described riser deck, described receipts ball deck, described turret structure and described single-point floating drum；
Described turret structure transmits mooring line, standpipe and electricity by upper bearing (metal), described single-point floating drum by lower bearing
The load of cable, makes FPSO body rotate around metal (upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412386.2A CN103482025B (en) | 2013-09-11 | 2013-09-11 | Novel inner cupola single point mooring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412386.2A CN103482025B (en) | 2013-09-11 | 2013-09-11 | Novel inner cupola single point mooring unit |
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| CN103482025A CN103482025A (en) | 2014-01-01 |
| CN103482025B true CN103482025B (en) | 2016-08-10 |
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| CN201310412386.2A Active CN103482025B (en) | 2013-09-11 | 2013-09-11 | Novel inner cupola single point mooring unit |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004562A1 (en) * | 2014-07-05 | 2016-01-14 | 中国石油大学(华东) | Buoy for single point mooring system |
| CN105539750B (en) * | 2015-12-23 | 2017-09-15 | 中国海洋石油总公司 | Floating Production stores up unloading system single-point production platform |
| CN109305295B (en) * | 2017-07-27 | 2019-08-13 | 中国船舶重工集团公司第七一九研究所 | A kind of shifting fork mechanism driving fluid slip ring |
| CN110104120B (en) * | 2018-12-18 | 2021-01-26 | 南通振华重型装备制造有限公司 | Construction method of single point mooring buoy barrel |
| CN112722199B (en) * | 2020-12-09 | 2022-05-03 | 中国海洋石油集团有限公司 | Method for positioning bent stand pipe in single-point mooring structure |
| CN116803837B (en) * | 2023-07-31 | 2024-07-09 | 招商局重工（江苏）有限公司 | Single-point mooring system and installation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893334A (en) * | 1993-12-03 | 1999-04-13 | Fmc Corporation | Method and apparatus for mooring floating storage vessels |
| US5860840A (en) * | 1996-08-02 | 1999-01-19 | Fmc Corporation | Disconnectable turret mooring system utilizing a spider buoy |
| US5823837A (en) * | 1997-11-20 | 1998-10-20 | Fmc Corporation | Turret mooring system with product swivel stack |
| CA2624315C (en) * | 2005-10-17 | 2013-07-16 | Single Buoy Moorings Inc. | Improved disconnectable buoyant turret mooring system |
| ES2303716T3 (en) * | 2006-01-03 | 2008-08-16 | Bluewater Energy Services B.V. | DISCONNECTING MOUNTING SYSTEM FOR A BOAT. |
| WO2010106134A2 (en) * | 2009-03-18 | 2010-09-23 | Single Buoy Moorings Inc. | Mooring system with decoupled mooring lines and/or riser system |
| WO2012032163A1 (en) * | 2010-09-09 | 2012-03-15 | Single Buoy Moorings Inc. | Disconnectable mooring system with grouped connectors |
| CN203497133U (en) * | 2013-09-11 | 2014-03-26 | 中国海洋石油总公司 | Single-point mooring apparatus of novel inner turret |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
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