CN106218830A - A kind of tension leg platform (TLP) that wide buoyancy tank is set - Google Patents
A kind of tension leg platform (TLP) that wide buoyancy tank is set Download PDFInfo
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- CN106218830A CN106218830A CN201610839750.7A CN201610839750A CN106218830A CN 106218830 A CN106218830 A CN 106218830A CN 201610839750 A CN201610839750 A CN 201610839750A CN 106218830 A CN106218830 A CN 106218830A
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- buoyancy tank
- platform
- tlp
- buoyancy
- tension leg
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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
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- Civil Engineering (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a kind of tension leg platform (TLP) WTLP that wide buoyancy tank is set, four major part such as including upper chunk, lower buoyancy aid, tension leg system and base foundation；Column is located on the downside of upper chunk and supports upper chunk, lower buoyancy aid bottom corner point is respectively provided with some tension legs and is connected with base foundation, provides downward pulling force with fixed platform on platform.This WTLP platform because of circular abutment and square buoyancy tank between have employed the changeover portion attachment structure of " side turn circle ", such that it is able on the basis of using circular abutment to ensure platform performance in place, buoyancy tank is designed to wider and increases bottom buoyancy and improve from floating stability, be conducive to realizing the integral constructing of upper chunk and lower buoyancy aid at the build the side that harbour and fairway depth are limited, and the wet means of transportation dragged can be used, the simultaneously design of wide buoyancy tank also contributes to be designed to buoyancy tank thinner, thus be conducive to reducing platform in place time suffered stream loading and improve the performance in place of TLP platform.
Description
Technical field
The present invention relates to a kind of tension leg platform (TLP), belong to ocean engineering field, particularly relate to a kind of arrange wide buoyancy tank
Tension leg platform (TLP).
Background technology
Tension leg platform (TLP) is a kind of typical deepwater floating platform, is called for short TLP (Tension Leg Platform), typically
It is made up of four parts such as upper chunk, lower buoyancy aid, tension leg system, base foundation.Tension leg platform (TLP) is by the residue of lower buoyancy aid
Buoyancy provides enough pretension for tension leg, makes the tension leg moment be in the tensioned state of tension, so that platform is in plane
Outer motion (rolling, pitching, hang down and swing) is bordering on rigidity, and the motion (swaying, surging, yawing) in plane then demonstrates flexibility,
Become half compliant platform of a kind of vertical mooring.Owing to tension leg platform (TLP) motion natural frequency on each degree of freedom is the most remote
From common Wave energy collection midband, there is good seakeeping capacity, obtained since seat of honour TLP enforcement from the nineties in last century
The biggest development, has become a kind of important platform structure pattern in the middle of offshore oil and gas field exploitation.
According to the difference of lower buoyancy aid version, existing tension leg platform (TLP) can be divided mainly into four types:
The first: (being called for short: CTLP), its lower buoyancy aid is square floating by four columns, four bottoms for traditional type tension leg platform (TLP)
Case is constituted, and column is positioned on four angles on lower buoyancy aid outermost edge, between generally circular in cross section or square-section, and the square buoyancy tank in bottom
Directly docking.Tension leg system is arranged on the outer of column bottom.Owing to circular abutment is at hydrodynamic performance, structure stress
, can save the aspect relatively square column such as steel material weight to have a clear superiority in, existing CTLP all have employed circular abutment.But it is circular vertical
Post is in terms of the connection of buoyancy tank square with bottom, and version and construction aspect are all convenient not as square column, and bottom is floated
Case should not be designed to wide, and the outside plate inside the most adjacent two buoyancy tanks can be the most close, connects to structure and brings difficulty, generally
The buoyancy tank width of the CTLP column diameter less than 0.6 times.Narrower bottom buoyancy tank can cause tension leg platform (TLP) at integral constructing
In the case of, face because bottom buoyancy is not enough and absorb water excessive problem from floating.Thus it is limited at construction harbour or fairway depth
In the case of, traditional type tension leg platform (TLP) has to use upper chunk to separate construction with lower buoyancy aid, arrives sea the most again and carries out
The method of abutting joint, or carry out lower water or towage by interim buoyancy tank in the case of integral constructing.Marine abutting joint from
Not driving Large marine installing engineering boats and ships, the cost of marine combined debugging is also far above in depressed place or harbour is debugged, and this is all by increase
The cost of investment of tension leg platform (TLP)；Use the mode by interim buoyancy tank to carry out lower water and face what the interim buoyancy tank of construction brought equally
Cost increases problem, and meanwhile, interim buoyancy tank there is also extra technical risk with connecting of platform with the reliability quickly removed；
The second: extension tension leg platform (TLP) (is called for short: ETLP), be different from traditional type tension leg platform (TLP), extension tension force
The column of leg platform is no longer at the outer of buoyancy aid under platform, on its each corner bottom lower buoyancy aid some
Underwater pontoons stretches out formation cantilever beam structure, and the end installation tension lower limb system of each cantilever beam, this is extension tension leg
Platform difference is in traditional type tension leg platform (TLP) outstanding feature.If ETLP uses circular abutment, the end can be faced the most equally
Portion's buoyancy tank should not be designed to wide, from the excessive problem of floating drinking water.If but used square column, platform performance in place could be subject to again
To impact.Simultaneously as the column that the column of ETLP is compared with CTLP is closer to the central authorities of lower buoyancy aid, the feelings of identical water plane area
Under condition, the stability of ETLP, not as good as CTLP, is generally had to by interim buoyancy tank to improve stability during wet haul is defeated；
The third: the star tension leg platform (TLP) (SeaStar TLP) in sea, the lower buoyancy aid of this type TLP have employed the central authorities of uniqueness
Post open side type designs, and central rods pass the water surface, and upper end supports upper chunk by jacket structure, and lower end is in the horizontal direction
Extend outward the angle buoyancy tank of three square-sections of 120 ° each other, form radial cantilever beam structure, and the end of buoyancy tank
Cross section is also gradually reduced, and its end is connected with tension leg system.This type platform is due to an only column, and water plane area has
Limit, is often applicable to the small-sized tension leg platform (TLP) that chunk tonnage is less.Meanwhile, this type platform has to because stability is not enough use
The construction mounting means that split is built, marine docking assembles；
4th kind of MOSES series Tensile leg platform.MOSESTLP is " minimizing deep-sea surface facilities structure " (Minimum
Offshore Surface Equipment Structure) abbreviation.The lower buoyancy aid of this type platform is by four columns and bottom
Pedestal forms, and bottom base central authorities are a square, and every rib diagonally stretches out formation cantilever beam structure, cantilever beam end
End section is gradually reduced, and tension leg system is just connected to the end of these four cantilever beams.Column is connected as a single entity with pedestal, sits respectively
Fall on four corners of base central cube end face.The column spacing comparing ETLP, MOSESTLP is less, column Water Plane
Area is less.Similar with SeaStar TLP, due to not enough from floating stability, MOSESTLP exists too in construction, installation
Have to use split to build, the problem building mounting means assembled is docked at sea.
Summary of the invention
Present invention is primarily targeted at the problems referred to above overcoming prior art to exist, and provide one that wide buoyancy tank can be set
Tension leg platform (TLP) WTLP, because it have employed the mistake of " side turns circle " between the conventional circular abutment of TLP platform and square buoyancy tank
Cross section connection structure, such that it is able on the basis of using circular abutment to ensure platform performance in place, be designed to more by buoyancy tank
Wide and increase bottom buoyancy and improve from floating stability, beneficially realize upper group at the build the side that harbour or fairway depth are limited
Block and the integral constructing of lower buoyancy aid, and the wet means of transportation dragged can be used, the design of the widest buoyancy tank also contributes to set buoyancy tank
Count thinner, thus be conducive to reducing platform in place time suffered stream loading, and then improve the performance in place of TLP platform, have
Effect improves the exploitativeness of tension leg platform (TLP), safety and overall economic efficiency.
It is an object of the invention to be realized by techniques below scheme:
Construct a kind of tension leg platform (TLP) WTLP that wide buoyancy tank is set, be provided with: upper chunk, lower buoyancy aid, tension leg system
System and base foundation etc. four is most of.Column is located on the downside of upper chunk and supports upper chunk, and upper chunk can be used for arranging
Various production technology facilities, drilling facilities, living facilities and helicopter platform etc.；Lower buoyancy aid is for providing more than platform self
The buoyancy of weight, to support whole platform, guarantees that bottom tension lower limb has enough pretensions simultaneously；On lower buoyancy aid bottom corner point
It is respectively provided with some tension legs to be connected with base foundation, provides downward pulling force with fixed platform on platform.Column is preferably in axle
Symmetrical.
Lower buoyancy aid is used for connecting vertical by four corner points bottom four circular abutments, the square buoyancy tank in bottom and lower buoyancy aid
Post forms with the connection changeover portion of buoyancy tank, and each buoyancy tank connects adjacent two and connects changeover portions；Four corner points bottom lower buoyancy aid
For connecting the connection changeover portion of column and buoyancy tank, rounded and with circular abutment lower end, its upper end is docked, lower end and buoyancy tank
Be connected both sides be flat limit, dock with two buoyancy tanks respectively, the both sides of this connection changeover portion from the height of buoyancy tank upper surface to mistake
The top of the section of crossing is the boss structure of " side turns circle ", and the outside connecting changeover portion is concordant with upper circular column；
The top of tension leg is connected to bottom lower buoyancy aid four corner points for connecting the connection changeover portion of column and buoyancy tank
Outside.
Additionally, the purpose of the present invention can also be realized by techniques below scheme:
Construct a kind of tension leg platform (TLP) that wide buoyancy tank is set, including upper chunk, lower buoyancy aid, tension leg system and bottom
Basis etc. four major part；Column is located on the downside of upper chunk and supports upper chunk, lower buoyancy aid bottom corner point is respectively provided with some
Tension leg is connected with base foundation, provides downward pulling force with fixed platform on platform.
Preferably, lower buoyancy aid is used for by four corner points bottom four circular abutments, the square buoyancy tank in bottom and lower buoyancy aid
Connect the connection changeover portion composition of column and buoyancy tank.
Preferably, column is distributed axisymmetricly.
Preferably, each buoyancy tank connects adjacent two and connects changeover portion.
Preferably, the length of buoyancy tank is more than the width connecting changeover portion.
Preferably, bottom lower buoyancy aid, four corner points are for connecting the connection changeover portion of column and buoyancy tank, and its upper end is circle
Shape is also docked with the lower end of circular abutment, and the both sides that lower end is connected with buoyancy tank are flat limit, dock with two buoyancy tanks respectively, this connection
The both sides of changeover portion are the boss structure of " side turns circle " from the top of the height of buoyancy tank upper surface to changeover portion, connect changeover portion
Outside is concordant with upper circular column.
Preferably, the top of tension leg is connected to bottom lower buoyancy aid four corner points for connecting the connection of column and buoyancy tank
The outside of changeover portion.
Beneficial effects of the present invention:
The design of the widest buoyancy tank can be effectively increased bottom buoyancy, reduces absorbing water from floating of platform, thus is conducive at code
Head or the limited build the side of fairway depth realize integral constructing and the combined debugging of upper chunk and lower buoyancy aid；
(2) WTLP platform has the most floating enough stability, can transport, effectively save transport in the way of using wet dragging
Boats and ships or the cost of investment of interim buoyancy tank, security performance and reliability are higher；
(3) WTLP platform uses circular abutment, and its hydrodynamic performance, structure stress, the equivalence aspect such as steel utilization ratio are comprehensive
It is better than using the tension leg platform (TLP) of square column, overall performance when effectively enhancing platform is in place, contributes to reducing platform weight,
Save steel；
Being designed with of the widest buoyancy tank helps to be designed to buoyancy tank thinner, thus be conducive to reducing platform in place time suffered
Stream loading, the design of the widest buoyancy tank also contributes to increase the damping of platform heaving, and then improves the property in place of TLP platform
Energy；Visible, the present invention breaches many limitations of existing tension leg platform (TLP), is effectively improved tension leg platform (TLP) and is building, transporting
Safety in defeated, installation process and unfailing performance, enhance the exploitativeness of tension leg platform (TLP), improves to a certain extent simultaneously
The performance in place of tension leg platform (TLP), effectively promotes the overall economic efficiency of tension leg platform (TLP).
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is schematic side view of the present invention.
Fig. 2 a is the schematic top plan view of buoyancy aid under the present invention.
Fig. 2 b is the sectional view of A-A position in Fig. 2 a.
Fig. 2 c is the sectional view of B-B position in Fig. 2 a.
Fig. 3 is the 3-D effect schematic diagram of buoyancy aid under the present invention.
In figure Major Symbol explanation: 1. upper chunk, 2. column, 3. connect changeover portion, 4. buoyancy tank, 5. tension leg system,
6. base foundation, 7. central authorities trap wall, 8. horizontal subdivision deck, the most vertical bulkhead, 10. radial direction bulkhead.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The detailed description of the invention of the present invention.In the description of the tension leg platform (TLP) WTLP of the arranged width buoyancy tank of the present invention, need reason
Solve, "front", "rear", " on ", the term such as D score be for only for ease of description technical scheme rather than instruction institute
The device or the element that refer to must have specific orientation, are therefore not considered as limiting the invention.
As it is shown in figure 1, the tension leg platform (TLP) WTLP of the arranged width buoyancy tank in one embodiment of the present invention is provided with: on
Portion's chunk 1, lower buoyancy aid, tension leg system 5 and base foundation 6 etc. four are most of.Upper chunk 1 can be used for arranging various production work
Skill facility, drilling facilities, living facilities and helicopter platform etc.；Lower buoyancy aid by 2, four, four columns bottom buoyancy tank 4 and
Constitute for connecting the connection changeover portion 3 of column and buoyancy tank, for providing whole to support more than the buoyancy of platform own wt
Platform, guarantees that the tension leg system 5 being positioned at corner bottom lower buoyancy aid has enough pretensions simultaneously；Preferably, described column
It is distributed axisymmetricly, so that this tension leg platform (TLP) that can arrange wide buoyancy tank is more stable.Column 2 is circular cross-section, and inside can be passed through
Central authorities' trap wall 7, some horizontal subdivision decks 8 are separated into the part such as ballast tank, empty cabin, machinery space, central canal tunnel passage；Buoyancy tank
The cross section of 4 is square, and inside is separated into the place such as ballast tank, empty cabin by vertical bulkhead 9；Connect changeover portion 3, its upper end in
Circle is also docked with circular abutment 2, and the both sides that lower end is connected with buoyancy tank 4 are flat limit, dock with two buoyancy tanks 4 respectively, this connection
The both sides of changeover portion are the boss structure of " side turns circle " from the top of the height of buoyancy tank upper surface to changeover portion, connect changeover portion
Outside is concordant with upper circular column 2, and central authorities' trap wall 7 extends downward the end connecting changeover portion 3 from the inside of top column 2
Portion, the inside of connection changeover portion 3 arranges four roads radially bulkheads 10 and is radially connected to by the both sides outside plate of buoyancy tank 4 on central authorities' trap wall 7；
It is respectively provided with some tension leg systems 5 on four angle points bottom lower buoyancy aid to be connected with the base foundation 6 being positioned at seabed, platform is carried
The various ways such as pile foundation, suction anchor or gravity type foundation can be used with fixed platform, base foundation 6 for downward pulling force.
The length of described buoyancy tank, more than the width of described connection changeover portion, so can be effectively increased bottom buoyancy, reduce
Absorbing water from floating of platform, thus be conducive to realizing upper chunk and lower buoyancy aid at the build the side that harbour or fairway depth are limited
Integral constructing and combined debugging.
Tension leg platform (TLP) involved in the present invention is mainly used in offshore oil and gas field exploitation, the seas such as support of studying and live
Movable offer platform support, is permanently secured to intended site after land formation, marine transportation, Attention problems.Build, transport,
Overall performance during mounting means and platform in place is designed with important impact for tension leg platform (TLP).The present invention
Involved tension leg platform (TLP), connects changeover portion because have employed " side turns circle " of innovation, such that it is able to employing circular abutment with
On the basis of ensureing platform performance in place, bottom buoyancy tank is designed to wider, can effectively reduce the absorbing water from floating and improve of platform
Wet drag stability, contribute to build harbour or fairway depth limited in the case of use upper chunk and lower buoyancy aid integral constructing
Method, and the wet method dragged can be used to carry out marine transportation, thus do not rely on and interim buoyancy tank or correlation engineering boats and ships are set, carry
The exploitativeness of high tension leg platform (TLP) and security reliability, and reduce investment outlay.The design of the widest buoyancy tank can obtain bigger
Vertical swing damping, also contribute to be designed to buoyancy tank simultaneously thinner with reduce platform in place time suffered stream loading, further
Improve the overall performance in place of platform.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various change, combines and change.All within the spirit and principles in the present invention, made
Any modification, equivalent substitution and improvement etc., within should be included in scope of the presently claimed invention.
Claims (7)
1. the tension leg platform (TLP) that wide buoyancy tank can be set, it is characterised in that: include upper chunk, lower buoyancy aid, tension leg system
And base foundation etc. four major part；Described column is located on the downside of described upper chunk and supports described upper chunk, at the bottom of lower buoyancy aid
It is respectively provided with some tension legs on portion's angle point to be connected with base foundation, provides downward pulling force with fixed platform on platform.
The tension leg platform (TLP) that wide buoyancy tank is set the most according to claim 1, it is characterised in that: described lower buoyancy aid is by four
Bottom circular abutment, the square buoyancy tank in bottom and lower buoyancy aid, four corner points are for connecting the connection changeover portion of column and buoyancy tank
Composition.
The tension leg platform (TLP) that wide buoyancy tank is set the most according to claim 2, it is characterised in that: described column is axisymmetricly
Distribution.
The tension leg platform (TLP) that wide buoyancy tank is set the most according to claim 3, it is characterised in that: each described buoyancy tank connects
Adjacent two described connection changeover portions.
The tension leg platform (TLP) that wide buoyancy tank is set the most according to claim 4, it is characterised in that: the length of described buoyancy tank is big
Width in described connection changeover portion.
6. according to the tension leg platform (TLP) of the arranged width buoyancy tank described in any one of claim 1-5, it is characterised in that float downward described in:
Bottom body, four corner points are for connecting the connection changeover portion of column and buoyancy tank, and its upper end is rounded and lower end with circular abutment
Docking, the both sides that lower end is connected with buoyancy tank are flat limit, dock with two buoyancy tanks respectively, and the both sides of this connection changeover portion are from buoyancy tank
The height on surface to the top of changeover portion is the boss structure of " side turns circle ", connects outside and the upper circular upright post flat of changeover portion
Together.
7. according to the tension leg platform (TLP) of the arranged width buoyancy tank described in any one of claim 1-5, it is characterised in that: described tension force
The top of lower limb is connected to bottom described lower buoyancy aid four corner points for connecting the outside connecting changeover portion of column and buoyancy tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610839750.7A CN106218830B (en) | 2016-09-21 | 2016-09-21 | A kind of tension leg platform (TLP) that wide buoyancy tank is set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610839750.7A CN106218830B (en) | 2016-09-21 | 2016-09-21 | A kind of tension leg platform (TLP) that wide buoyancy tank is set |
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| CN106218830A true CN106218830A (en) | 2016-12-14 |
| CN106218830B CN106218830B (en) | 2018-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108360460A (en) * | 2018-04-18 | 2018-08-03 | 秦皇岛市海洋牧场增养殖有限公司 | Sightseeing ship steps on quadrupler |
| CN108820150A (en) * | 2018-07-25 | 2018-11-16 | 惠生（南通）重工有限公司 | The tower body of buoyant tower platform |
| CN109094746A (en) * | 2018-07-25 | 2018-12-28 | 惠生（南通）重工有限公司 | Buoyant tower platform and the stage+module method |
| CN112478050A (en) * | 2020-12-09 | 2021-03-12 | 中海石油(中国)有限公司 | A buffer stop for semi-submerged formula production platform center pillar oil tank |
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|---|---|
| CN106218830B (en) | 2018-06-01 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC Deepwater Development Limited Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Offshore Oil Engineering Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Deepwater Development Limited Patentee before: China National Offshore Oil Corporation Co-patentee before: Offshore Oil Engineering Co., Ltd. |
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