CN106218830B - 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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- CN106218830B CN106218830B CN201610839750.7A CN201610839750A CN106218830B CN 106218830 B CN106218830 B CN 106218830B CN 201610839750 A CN201610839750 A CN 201610839750A CN 106218830 B CN106218830 B CN 106218830B
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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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Abstract
It is most of including upper chunk, lower floating body, tension leg system and base foundation etc. four the invention discloses a kind of tension leg platform (TLP)-WTLP for setting wide buoyancy tank；Column is located on the downside of upper chunk and supports upper chunk, and be respectively provided with several tension legs on lower floating body bottom corner point is connected with base foundation, provides platform downward pulling force with fixed platform.The WTLP platforms because circular abutment and square buoyancy tank between employ the transition section connection structure of " side turn circle ", on the basis of ensureing platform performance in place using circular abutment, buoyancy tank is designed wider and increases bottom buoyancy and improves from floating stability, the build the side for being conducive to be limited in harbour and fairway depth realizes upper chunk and the integral constructing of lower floating body, and the wet means of transportation dragged can be used, design with time width buoyancy tank also contributes to buoyancy tank being designed thinner, so as to be conducive to reduce platform it is in place when suffered stream loading and improve the performance in place of TLP platforms.
Description
Technical field
The present invention relates to a kind of tension leg platform (TLP), belong to ocean engineering field more particularly to a kind of wide buoyancy tank is set
Tension leg platform (TLP).
Background technology
Tension leg platform (TLP) is a kind of typical deepwater floating platform, abbreviation TLP (Tension Leg Platform), generally
It is made of four parts such as upper chunk, lower floating body, tension leg system, base foundations.The residue that tension leg platform (TLP) passes through lower floating body
Buoyancy provides enough pretensions for tension leg, the tension leg moment is made to be in the tensioned state of tension, so that platform is in plane
Outer movement (rolling, pitching, heaving) is bordering on rigidity, and the movement (swaying, surging, yawing) in plane then shows flexibility,
As a kind of semi-compliant formula platform of vertical mooring.Since movement intrinsic frequency of the tension leg platform (TLP) in each degree of freedom is all remote
From common Wave energy collection midband, there is good seakeeping capacity, obtained since the nineties in last century, seat of honour TLP was implemented
Very big development, as a kind of important platform structure pattern among offshore oil and gas field exploitation.
According to the difference of lower floating body structure type, existing tension leg platform (TLP) can be divided mainly into four types：
The first：Traditional type tension leg platform (TLP) is (referred to as：CTLP), lower floating body is square floating by four columns, four bottoms
Case is formed, and column is located on four angles on the outermost edge of lower floating body, between generally circular in cross section or square-section, with the square buoyancy tank in bottom
Directly dock.Tension leg system is mounted on the outer of column bottom.Since circular abutment is in hydrodynamic performance, structure stress
It can, save steel material weight etc. to have a clear superiority compared with square column, existing CTLP all employs circular abutment.But circle is vertical
Column is in terms of the connection with the square buoyancy tank in bottom, and structure type is convenient with being not so good as square column in terms of construction, and bottom is floated
Case should not be designed wide, and otherwise the outside plate on the inside of two neighboring buoyancy tank can be approached excessively, next difficult to structure connect band, usually
The buoyancy tank width of CTLP is no more than 0.6 times of column diameter.Relatively narrow bottom buoyancy tank can cause tension leg platform (TLP) in integral constructing
In the case of, it is faced due to bottom buoyancy is insufficient from floating and absorbs water the problem of excessive.Thus it is limited in construction harbour or fairway depth
In the case of, traditional type tension leg platform (TLP) has to separately build with lower floating body using upper chunk, then arrives marine progress again
The method of abutting joint is put into the water in the case of integral constructing by interim buoyancy tank or towage.Marine abutting joint from
Large marine installing engineering ship is not opened, and the cost of marine combined debugging is also far above in depressed place or harbour debugging, this will increase
The cost of investment of tension leg platform (TLP)；It is put into the water equally to face by the way of by interim buoyancy tank and builds what interim buoyancy tank was brought
Cost increases problem, meanwhile, there is also additional technical risks for the reliability for connecting with quickly removing of interim buoyancy tank and platform；
Second：Extension tension leg platform (TLP) is (referred to as：ETLP), different from traditional type tension leg platform (TLP), extension tension
The column of leg platform is no longer at the most outer of floating body under platform, on each corner of lower floating body bottom some
Underwater pontoons extend outward to form cantilever beam structure, and the end installation tension leg system of each cantilever beam, this is extension tension leg
Platform difference is in the most significant feature of traditional type tension leg platform (TLP).If ETLP uses circular abutment, bottom can be equally faced
Portion's buoyancy tank should not be designed wide, absorb water the problem of excessive from floating.But if using square column, platform performance in place again can be by
To influence.Simultaneously as center of column of the column of ETLP compared with CTLP closer to lower floating body, the feelings of identical water plane area
Under condition, the stability of ETLP usually has to by interim buoyancy tank improve stability not as good as CTLP during wet haul is defeated；
The third：The star tension leg platform (TLP) (SeaStar TLP) in sea, the lower floating body of type TLP employ unique center
Column open side type designs, and central rods pass through the water surface, and upper end supports upper chunk by jacket structure, and lower end is in the horizontal direction
The buoyancy tank of angle 120 ° of three rectangular sections each other is extended outward, forms radial cantilever beam structure, and the end of buoyancy tank
Section is also gradually reduced, and end is connected with tension leg system.The type platform is since only there are one column, water plane area has
Limit, often suitable for the smaller small-sized tension leg platform (TLP) of chunking tonnage.Meanwhile the type platform has to use due to stability is insufficient
Split is built, the construction mounting means of marine docking assembling；
4th kind of MOSES series Tensile leg platform.MOSESTLP is " minimizing deep-sea surface facilities structure " (Minimum
Offshore Surface Equipment Structure) abbreviation.The lower floating body of the type platform is by four columns and bottom
Pedestal forms, and bottom base center is a square, and every rib diagonally extends outward to form cantilever beam structure, cantilever beam end
End section is gradually reduced, and tension leg system is just connected to the end of this four cantilever beams.Column is connected as a single entity with pedestal, sits respectively
Fall on four corners of base central cube top surface.Compared to ETLP, the column spacing smaller of MOSESTLP, column Water Plane
Area smaller.It is similar with SeaStar TLP, since from floating stability deficiency, MOSESTLP similarly exists in construction, installation
Have to using split construction, marine the problem of docking the construction mounting means assembled.
The content of the invention
It is a primary object of the present invention to overcome the above problem existing in the prior art, and wide buoyancy tank can be set by providing one kind
Tension leg platform (TLP)-WTLP, because of the mistake that it employs between the common circular abutment of TLP platforms and square buoyancy tank " side turns circle "
Section connection structure is crossed, so as to which on the basis of circular abutment is used to ensure platform performance in place, buoyancy tank is designed more
Wide and increase bottom buoyancy and improve from floating stability, the build the side for being conducive to be limited in harbour or fairway depth realizes upper group
The integral constructing of block and lower floating body, and the wet means of transportation dragged can be used, the design with time width buoyancy tank also contributes to set buoyancy tank
Count thinner, so as to be conducive to reduce platform it is in place when suffered stream loading, and then improve the performance in place of TLP platforms, have
Effect improves exploitativeness, security and the overall economic efficiency of tension leg platform (TLP).
The purpose of the present invention is what is realized by following technical scheme：
A kind of tension leg platform (TLP)-WTLP that wide buoyancy tank is set is constructed, is equipped with：Upper chunk, lower floating body, tension leg system
System and base foundation etc. four are 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 floating body is more than platform itself for providing
The buoyancy of weight ensures that bottom tension leg possesses enough pretensions to support entire platform；On lower floating body bottom corner point
It is respectively provided with several tension legs with base foundation to be connected, provides platform downward pulling force with fixed platform.Column is preferably in axis
It is symmetrical.
Lower floating body is vertical for connecting by four circular abutments, the square buoyancy tank in bottom and the corner point of lower floating body bottom four
The connection set of transitions of column and buoyancy tank is into each buoyancy tank connects two neighboring connection changeover portion；Lower four corner points in floating body bottom
For connecting the connection changeover portion of column and buoyancy tank, the upper end is rounded and lower end with circular abutment is docked, lower end and buoyancy tank
Connected both sides are flat side, are docked respectively with two buoyancy tanks, the both sides of the connection changeover portion are from the height of buoyancy tank upper surface to mistake
Boss structure of the top of section for " side turns circle " is crossed, the outside for connecting changeover portion is concordant with upper circular column；
The top of tension leg is connected to lower four corner points in floating body bottom for connecting the connection changeover portion of column and buoyancy tank
Outside.
In addition, the purpose of the present invention can also be realized by following technical scheme：
A kind of tension leg platform (TLP) that wide buoyancy tank is set is constructed, including upper chunk, lower floating body, tension leg system and bottom
Bases etc. four are most of；Column is located on the downside of upper chunk and supports upper chunk, is respectively provided on lower floating body bottom corner point several
Tension leg is connected with base foundation, provides platform downward pulling force with fixed platform.
Preferably, lower floating body is used for by four circular abutments, the square buoyancy tank in bottom and the corner point of lower floating body bottom four
Connect the connection set of transitions of column and buoyancy tank into.
Preferably, column is axisymmetricly distributed.
Preferably, each buoyancy tank connects two neighboring connection changeover portion.
Preferably, the length of buoyancy tank is more than the width of connection changeover portion.
Preferably, lower four corner points in floating body bottom are used to connect the connection changeover portion of column and buoyancy tank, and the upper end is in circle
Shape is simultaneously docked with the lower end of circular abutment, and the both sides that lower end is connected with buoyancy tank are flat side, are docked respectively with two buoyancy tanks, the connection
The both sides of changeover portion are the boss structure of " side turns circle " from the height of buoyancy tank upper surface to the top of changeover portion, connect changeover portion
Outside is concordant with upper circular column.
Preferably, the top of tension leg is connected to lower four corner points in floating body bottom for connecting the connection of column and buoyancy tank
The outside of changeover portion.
Beneficial effects of the present invention：
(1) the design of wide buoyancy tank can be effectively increased bottom buoyancy, reduce being absorbed water from floating for platform, so as to be conducive in code
The build the side that head or fairway depth are limited realizes upper chunk and the integral constructing and combined debugging of lower floating body；
(2) WTLP platforms have enough certainly floating stabilities, and the wet mode dragged may be employed and transported, effectively save transport
The cost of investment of ship or interim buoyancy tank, security performance and reliability higher；
(3) WTLP platforms are comprehensive using circular abutment, hydrodynamic performance, structure stress, equivalent steel utilization ratio etc.
Better than the tension leg platform (TLP) using square column, overall performance when effectively enhancing platform is in place helps to reduce platform weight,
Save steel；
(4) the design of wide buoyancy tank helps buoyancy tank being designed thinner, so as to be conducive to reduce platform it is in place when it is suffered
Stream loading, the design with time width buoyancy tank also contributes to increase the damping of platform heaving, and then improves the property in place of TLP platforms
Energy；As it can be seen that the present invention breaches many limitations of existing tension leg platform (TLP), it is effectively improved tension leg platform (TLP) and is building, transporting
Safety and unfailing performance defeated, in installation process, enhance the exploitativeness of tension leg platform (TLP), while improve to a certain extent
The performance in place of tension leg platform (TLP) effectively promotes the overall economic efficiency of tension leg platform (TLP).
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the invention will be further described, in attached drawing：
Fig. 1 is schematic side view of the present invention.
Fig. 2 a are the schematic top plan view of the lower floating body of the present invention.
Fig. 2 b are the sectional view of A-A positions in Fig. 2 a.
Fig. 2 c are the sectional view of B-B positions in Fig. 2 a.
Fig. 3 is the 3-D effect schematic diagram of the lower floating body of the present invention.
Major Symbol explanation in figure：1. upper chunk, 2. columns, 3. connection changeover portions, 4. buoyancy tanks, 5. tension leg systems,
6. base foundation, 7. central trap walls, 8. horizontal subdivision decks, 9. vertical bulkheads, 10. radial direction bulkheads.
Specific embodiment
In order to which the technical features, objects and effects to the present invention are more clearly understood, now compare attached drawing and be described in detail
The specific embodiment of the present invention., it is necessary to manage in the description of the tension leg platform (TLP)-WTLP for setting wide buoyancy tank of the present invention
Solution, the terms such as "front", "rear", " on ", " under " are for only for ease of description technical scheme rather than instruction institute
The device or element of finger must have specific orientation, therefore be not considered as limiting the invention.
As shown in Figure 1, tension leg platform (TLP)-the WTLP for setting wide buoyancy tank in one embodiment of the present invention is equipped with：On
Portion's chunking 1, lower floating body, tension leg system 5 and base foundation 6 etc. four are most of.Upper chunk 1 can be used for arranging various production works
Skill facility, drilling facilities, living facilities and helicopter platform etc.；Lower floating body by four columns, 2, four bottom buoyancy tanks 4 and
Connection changeover portion 3 for connecting column and buoyancy tank is formed, entire to support for providing the buoyancy more than platform own wt
Platform, while ensure that the tension leg system 5 positioned at lower floating body bottom four corners possesses enough pretensions；Preferably, the column
It is axisymmetricly distributed, so that this can set the tension leg platform (TLP) of wide buoyancy tank more stable.Column 2 is circular cross-section, and inside can pass through
Central trap wall 7, several horizontal subdivision decks 8 are separated into the parts such as ballast tank, empty cabin, machinery space, mesotube tunnel passage；Buoyancy tank
4 cross section is square, and inside is separated into the places such as ballast tank, empty cabin by vertical bulkhead 9；Changeover portion 3 is connected, the upper end is in
Circle is simultaneously docked with circular abutment 2, and the both sides that lower end is connected with buoyancy tank 4 are flat side, are docked respectively with two buoyancy tanks 4, the connection
The both sides of changeover portion are the boss structure of " side turns circle " from the height of buoyancy tank upper surface to the top of changeover portion, connect changeover portion
Outside is concordant with upper circular column 2, and central trap wall 7 extends downward into the bottom of connection changeover portion 3 from the inside of top column 2
Portion, the inside of connection changeover portion 3 set four radial direction bulkheads 10 that the both sides outside plate of buoyancy tank 4 is radially connected on central trap wall 7；
Several tension leg systems 5 are respectively provided on four angle points of lower floating body bottom with the base foundation 6 positioned at seabed to be connected, and platform is carried
For downward pulling force with fixed platform, the diversified forms such as pile foundation, suction anchor or gravity type foundation may be employed in base foundation 6.
The length of the buoyancy tank is more than the width of the connection changeover portion, can so be effectively increased bottom buoyancy, reduce
Platform is absorbed water from floating, and upper chunk and lower floating body are realized so as to be conducive to the build the side being limited in harbour or fairway depth
Integral constructing and combined debugging.
Tension leg platform (TLP) according to the present invention is mainly used for marine to offshore oil and gas field exploitation, research and life support etc.
Activity provides platform and supports, intended site is permanently secured to after land formation, marine transportation, Attention problems.Build, transport,
Mounting means and platform it is in place when overall performance be designed with important influence for tension leg platform (TLP).The present invention
Involved tension leg platform (TLP), because employing " side turn circle " connection changeover portion of innovation, so as to use circular abutment with
On the basis of ensureing platform performance in place, bottom buoyancy tank is designed wider, can effectively reduce absorbing water and improve from floating for platform
It is wet to drag stability, contribute in the case where building harbour or fairway depth and being limited using upper chunk and lower floating body integral constructing
Method, and the wet method dragged can be used and carry out marine transportation, so as to independent of interim buoyancy tank or correlation engineering ship is set, carry
The high exploitativeness and security reliability of tension leg platform (TLP), and reduce investment outlay.In addition the design of wide buoyancy tank can obtain bigger
Heaving damping, while also contribute to by buoyancy tank be designed it is thinner with reduce platform it is in place when suffered stream loading, further
Improve the overall performance in place of platform.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the present invention can have various changes, combination and variation.Within the spirit and principles of the invention, made
Any modification, equivalent substitution, improvement and etc. should be included within scope of the presently claimed invention.
Claims (6)
1. a kind of tension leg platform (TLP) that wide buoyancy tank is set, it is characterised in that：Including upper chunk, lower floating body, tension leg system
And base foundation etc. four is most of；The lower floating body is by four circular abutments, the square buoyancy tank in bottom and lower floating body bottom four
Corner point be used to connecting the connection set of transitions of column and buoyancy tank into；The column is located on the downside of the upper chunk and supports institute
Upper chunk is stated, and be respectively provided with several tension legs on lower floating body bottom corner point is connected with base foundation, and downward drawing is provided platform
Power is with fixed platform；The upper end of the connection changeover portion is rounded and lower end with circular abutment is docked, and lower end is connected with buoyancy tank
Both sides for flat side, docked respectively with two buoyancy tanks, the both sides of the connection changeover portion are from the height of buoyancy tank upper surface to changeover portion
Top for " side turn circle " boss structure.
2. the tension leg platform (TLP) according to claim 1 that wide buoyancy tank is set, it is characterised in that：The column is axisymmetricly
Distribution.
3. the tension leg platform (TLP) according to claim 2 that wide buoyancy tank is set, it is characterised in that：Each buoyancy tank connection
The two neighboring connection changeover portion.
4. the tension leg platform (TLP) according to claim 3 that wide buoyancy tank is set, it is characterised in that：The length of the buoyancy tank is big
In the width of the connection changeover portion.
5. the tension leg platform (TLP) of wide buoyancy tank can be set according to claim 1-4 any one of them, it is characterised in that：Connect transition
The outside of section is concordant with upper circular column.
6. the tension leg platform (TLP) of wide buoyancy tank can be set according to claim 1-4 any one of them, it is characterised in that：The tension
The top of leg is connected to described four corner points in lower floating body bottom for connecting the outside of the connection changeover portion of column and buoyancy tank.
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| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| 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 CN106218830A (en) | 2016-12-14 |
| CN106218830B true CN106218830B (en) | 2018-06-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360460B (en) * | 2018-04-18 | 2024-03-29 | 秦皇岛市海洋牧场增养殖有限公司 | Sightseeing boat boarding device |
| CN109094746B (en) * | 2018-07-25 | 2023-09-29 | 惠生（南通）重工有限公司 | Buoyancy tower platform and installation method thereof |
| CN108820150B (en) * | 2018-07-25 | 2019-12-31 | 惠生（南通）重工有限公司 | Tower body of buoyancy tower platform |
| CN112478050B (en) * | 2020-12-09 | 2022-05-17 | 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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| CN206297712U (en) * | 2016-09-21 | 2017-07-04 | 中国海洋石油总公司 | A kind of tension leg platform (TLP) of settable buoyancy tank wide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO325651B1 (en) * | 2003-01-27 | 2008-06-30 | Moss Maritime As | Bronnhodeplattform |
| US20090229505A1 (en) * | 2007-10-08 | 2009-09-17 | Anthony Neil Williams | Battered column semi-submersible offshore platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103221302A (en) * | 2010-11-09 | 2013-07-24 | 泰克尼普法国公司 | Semi-submersible floating structure for vortex-nduced motion performance |
| CN103917439A (en) * | 2011-07-01 | 2014-07-09 | 海马设备公司 | Offshore platform with outset columns |
| CN105775056A (en) * | 2016-03-29 | 2016-07-20 | 中国海洋石油总公司 | Bottom-supported production storage platform |
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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. |