CN209305784U - Semisubmersible platform catenary mooring system - Google Patents
Semisubmersible platform catenary mooring system Download PDFInfo
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- CN209305784U CN209305784U CN201920046253.0U CN201920046253U CN209305784U CN 209305784 U CN209305784 U CN 209305784U CN 201920046253 U CN201920046253 U CN 201920046253U CN 209305784 U CN209305784 U CN 209305784U
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- mooring
- semisubmersible platform
- mooring line
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Abstract
The utility model provides a kind of semisubmersible platform catenary mooring system, comprising: semisubmersible platform is provided at least one compound mooring line on the semisubmersible platform, and the compound mooring line bottom, which is provided with, is embedded into formula anchor for the towing as mooring foundation；The compound mooring line is in the compound mooring line of three-stage of catenary, including upper end anchor chain, middle section polyester cable and bottom end anchor chain.Semisubmersible platform catenary mooring system described in the utility model, polyester cable section self weight in compound mooring line is smaller, close to certainly floating in water, anchoring system weight can be mitigated, improve the horizontal restoring force of mooring, the payload of platform is improved, anchoring performance is better than traditional mooring line, is suitable for the deepwater mooring system of ocean platform.At low cost, the polyester cable price of identical rupture strength is much smaller than wirerope, and the economy of anchoring system is more preferable.
Description
Technical field
The utility model relates to semisubmersible platform anchoring systems, specifically, more particularly to a kind of novel semisubmersible platform
Catenary mooring system.
Background technique
Increasingly increase with the mankind to oil gas energy demand, accounts for the offshore petroleum resources of global oil total resources 34%
By the main battle ground of olefiant gas development of resources.With the progress of oil gas equipment manufacture, ocean oil and gas resource exploration and Jian hair
The depth of water be continuously increased, offshore and gas development experienced from shallow water to deep water the development course so that ultra-deep-water.
Semisubmersible drilling platform capacity of anti-storm is strong, and useful load is big, and the depth of water range of adaptation is wide, there is good motility
Can, more severe sea conditions are adapted to, are to develop most rapid mobile drilling platform in recent years, Yu Haiyang is widely applied
The drilling of petroleum resources.
Anchoring system be used for maintain semisubmersible drilling platform normal operation and protect standpipe and underwater relevant device not by
Damage, wherein anchor chain or wirerope that traditional catenary mooring system is big using weight, pass through catenary self weight and geometry deformation
The restoring force for making platform remain in situ is provided.
After the working platform depth of water further increases, wirerope or anchor chain are elongated in water, and self weight increases, and material utilization amount is more, phase
The cost answered becomes very high and uneconomical；Hawser is gradually reduced with plumb line angle at fairlead, is acted on vertical on platform
Load increases with it, and influences platform changing load and work capacity；Mooring horizontal rigidity but increases with the depth of water and is become smaller, anchoring
Validity is worse and worse.
Summary of the invention
According to traditional catenary mooring system set forth above after the working platform depth of water further increases, wirerope or anchor in water
Chain is elongated, and self weight increases, and material utilization amount is more, and corresponding cost becomes very high and uneconomical；Hawser and vertical wire clamp at fairlead
Angle is gradually reduced, and the vertical load acted on platform increases with it, and influences platform changing load and work capacity；Mooring is horizontal
Rigidity but increases with the depth of water and is become smaller, the validity of anchoring worse and worse the technical issues of, and it is outstanding to provide a kind of semisubmersible platform
Chain type anchoring system.The utility model mainly utilizes the NEW TYPE OF COMPOSITE mooring line connecting platform that middle section is polyester cable and anchoring base
Plinth, quality is lighter, smaller to the vertical load of platform, to increase platform payload, can provide biggish horizontal restoring force,
System anchoring performance is more preferable, and cost is lower, good economy performance.
The technological means that the utility model uses is as follows:
A kind of semisubmersible platform catenary mooring system, comprising: semisubmersible platform, be provided on the semisubmersible platform to
A few compound mooring line, the compound mooring line bottom, which is provided with, is embedded into formula anchor for the towing as mooring foundation；It is described
Compound mooring line is in the compound mooring line of three-stage of catenary, including upper end anchor chain, middle section polyester cable and bottom end anchor chain；Institute
It states upper end anchor chain, middle section polyester cable and bottom end anchor chain to be sequentially connected from top to bottom, wherein buoyant spheres I are set to the middle section polyester
The connecting pin of cable and bottom end anchor chain.
Further, the upper end anchor chain and middle section polyester cable are connected and fixed by chain rope socket I, the middle section polyester cable
It is connected and fixed with buoyant spheres I by chain rope socket II at the top of bottom end, bottom end anchor chain.
Further, the towing is embedded into formula anchor and is completely or partially embedded in seabed, the compound mooring line bottom end anchor chain
Tail end be laid on sea bed always.
Further, the towing is embedded into formula anchor tail end and is provided with stern fast, and buoyant spheres II are provided on the stern fast.
Further, it is provided with chock on the semisubmersible platform outer wall, be arranged on the deck of the semisubmersible platform
There is mooring winch, the compound mooring line upper end is installed on the chock.
Further, four groups of anchoring systems are provided on the semisubmersible platform, the relatively described semisubmersible platform is in quadrangle
It is arranged symmetrically；Every group of anchoring system is provided with 2 or 3 compound mooring lines.
Compared with the prior art, the utility model has the advantage that
1, the polyester cable section self weight in compound mooring line is smaller, close to from floating in water, can mitigate anchoring system weight, mention
The high horizontal restoring force of mooring, improves the payload of platform, and anchoring performance is better than traditional mooring line, is suitable for ocean platform
The deepwater mooring system.
2, at low cost, the polyester cable price of identical rupture strength is much smaller than wirerope, the economy of anchoring system in ultra-deep-water
Property is more preferable.
3, higher using the mooring line intensity of polyester cable, fatigue life is long, and corrosion resistance and good increases anchoring system
Service life and functional reliability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model semisubmersible platform catenary mooring system.
Fig. 2 is the mooring line of the utility model semisubmersible platform catenary mooring system, the layout drawing of anchor.
Fig. 3 is the scheme of installation that towing is embedded into formula anchor in the utility model.
Fig. 4 is the mooring line in the utility model after the completion of pretension anchor, the state diagram of anchor.
Fig. 5 is the platform to cast anchor in the utility model ship after hours and the connection figure of anchor.
Wherein: 1, semisubmersible platform, 2, mooring winch, 3, chock, 4, chain rope socket I, 5, chain rope socket II, 6, buoyancy
Ball I, 7, towing are embedded into formula anchor, 8, buoyant spheres II, 9, upper end anchor chain, 10, middle section polyester cable, 11, bottom end anchor chain, 12, mooring line
I, 13, mooring line II, 14, mooring line III, 15, mooring line IV, 16, mooring line V, 17, mooring line VI, 18, mooring line VII, 19,
Mooring line VIII, 20, stern fast, 21, the ship that casts anchor (AHV), 22, buoyant spheres III.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with
Attached drawing in the utility model embodiment carries out the technical scheme in the embodiment of the utility model clear, complete
Ground description, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.With
Under be to the description only actually of at least one exemplary embodiment it is illustrative, never as to the utility model and its answering
With or any restrictions that use.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the utility model.As used herein, unless the context clearly indicates otherwise, otherwise singular
Form be also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or
When " comprising ", existing characteristics, step, operation, device, component and/or their combination are indicated.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be clear that for ease of description, each shown in attached drawing
The size of a part is not to draw according to actual proportionate relationship.Skill known for person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
In attached drawing afterwards do not need that it is further discussed.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because
This should not be understood as the limitation to scope of protection of the utility model: the noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of utility model protection range.
As shown in Figure 1, the utility model provides a kind of semisubmersible platform catenary mooring system, each mooring line and anchor pair
Claim arrangement and structure is identical, only illustrates wherein structure type at one herein, remaining can refer to herein.
As shown, the utility model provides a kind of semisubmersible platform catenary mooring system, comprising: semisubmersible platform
1, at least one compound mooring line is provided on the semisubmersible platform 1, and the compound mooring line bottom is provided with for conduct
The towing of mooring foundation is embedded into formula anchor 7；The compound mooring line is (anchor chain-is poly- in the compound mooring line of three-stage of catenary
Ester cable-anchor chain), including upper end anchor chain 9, middle section polyester cable 10 and bottom end anchor chain 11；The upper end anchor chain 9, middle section polyester cable 10
It is sequentially connected from top to bottom with bottom end anchor chain 11, wherein buoyant spheres I 6 are set to the middle section polyester cable 10 and bottom end anchor chain 11
Connecting pin.
The buoyant spheres I 6 are mounted on middle section polyester cable 10 and 11 junction of bottom end anchor chain, make polyester cable 10 far from sea
Bottom prevents polyester cable from touching seabed, and polyester cable is avoided to wear and into sand, prolong the service life.
The upper end anchor chain 9 and middle section polyester cable 10 are connected and fixed by chain rope socket I 4,10 bottom of middle section polyester cable
End, 11 top of bottom end anchor chain and buoyant spheres I 6 are connected and fixed by chain rope socket II 5.
The towing is embedded into formula anchor 7 and is completely or partially embedded in seabed, and the frictional force of front and soil mainly by anchor is supported
External force resistance.The tail end of the compound mooring line bottom end anchor chain 11 is laid on sea bed always.The bottom end anchor chain 11 has always
A part is laid on sea bed, resists the abrasion on sea bed, while prevents away towing anchor 7 from only by horizontal force action, always
Anchor.
The towing is embedded into 7 tail end of formula anchor and is provided with stern fast 20, is provided with buoyant spheres II 8 on the stern fast 20.Described
Towing, which is embedded into 7 rear portion of formula anchor, attached one section of stern fast 20, and help controls towing and is embedded into formula anchor 7 in the orientation of sea bed；The tail
A buoyant spheres II 8 are connected on cable 20, the position and orientation for being embedded into formula anchor 7 for identifying towing.
It is provided with chock 3 on 1 outer wall of semisubmersible platform, is provided with mooring on the deck of the semisubmersible platform 1
Winch 2, the compound mooring line upper end are installed on the chock 3.The upper end anchor chain 9 is connected with fairleader 3, resists
It is worn at fairlead, protects not wear-resisting polyester cable 10.
Four groups of anchoring systems are provided on the semisubmersible platform 1, the relatively described semisubmersible platform 1 is in the symmetrical cloth in quadrangle
It sets；Every group of anchoring system is provided with 2 or 3 compound mooring lines.
Preferably, for head to semisubmersible platform 1 approximately uniform with lateral exposed area, the environmental forces acted on thereon exists
All directions difference is little, the mooring line, and anchor is divided into four groups and is arranged symmetrically, and every group 2, mooring line I 12 and mooring line II 13
It is first group, mooring line III 14 and mooring line IV 15 are second group, and mooring line V 16 and mooring line VI 17 are third group, mooring line
VII 18 with mooring line VIII 19 be the 4th group.
The utility model uses middle section for the NEW TYPE OF COMPOSITE mooring line of polyester cable, and quality is lighter, increases platform payload
Greatly, design buoyancy needed for platform reduces, and can provide biggish horizontal restoring force, reduce the horizontal displacement of platform, mooring line
Intensity is higher, and fatigue life is long, corrosion resistance and good, increases service life and the reliability of anchoring system, and cost is lower, warp
Ji property is good.
A kind of installation method of above-mentioned semisubmersible platform catenary mooring system, comprising the following steps:
S1, the ship 21 that casts anchor carry middle section polyester cable 10, bottom end anchor chain 11 in compound mooring line, and towing is embedded into formula anchor
7, stern fast 20, buoyant spheres I 6, buoyant spheres II 8 and buoyant spheres III 22 reach specified sea area；Towing is embedded into formula anchor 7 slowly to transfer
To sea bed surface, the additional stern fast 20 on anchor first sinks to touching sea bed, sinks to sea bed completely when towing is embedded into formula anchor 7, passes through
Buoyant spheres II 8 pull the position and direction for being embedded into formula anchor 7 to identify；Then the ship 21 that casts anchor is moved to the direction far from towing anchor 7,
Towing anchor 7 is set to be gradually embedded sea bed.
Before semisubmersible platform 1 is in place, the middle section polyester cable 10 and work below of casting anchor in compound mooring line are completed, is thrown
Bottom end anchor chain 11, middle section polyester cable 10 and towing are embedded into formula anchor 7 and thrown by anchor ship 21, and in middle section, 10 lower end of polyester cable connects buoyancy
Ball I 6, prevent with seabed contact wear, upper end connection buoyant spheres III 22 play positioning action, facilitate installation；Semisubmersible platform 1
After in place, the ship 21 that casts anchor connects 10 upper end of middle section polyester cable with the upper end anchor chain 9 on the semisubmersible platform 1, removes simultaneously
Buoyant spheres III 22.
S2, mooring winch 2 make it have required three-stage threadiness catenary shape by drawing compound mooring line, multiple
The pretightning force closed on mooring line is established by the mooring winch 2 on platform；
When being moved semisubmersible platform 1 is in improper environmental load, tension on compound mooring line with
The geometry of stretched wire change and axial elastic deformation and change, providing one for platform makes it remain reply in situ
Power, platform displacement is bigger, and provided mooring force is bigger.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (6)
1. a kind of semisubmersible platform catenary mooring system characterized by comprising semisubmersible platform, the semisubmersible platform
On be provided at least one compound mooring line, the compound mooring line bottom is provided with to be embedded into for the towing as mooring foundation
Formula anchor；
The compound mooring line is in the compound mooring line of three-stage of catenary, including upper end anchor chain, middle section polyester cable and bottom
Hold anchor chain；
The upper end anchor chain, middle section polyester cable and bottom end anchor chain are sequentially connected from top to bottom, and wherein buoyant spheres I are set in described
The connecting pin of section polyester cable and bottom end anchor chain.
2. semisubmersible platform catenary mooring system according to claim 1, which is characterized in that
The upper end anchor chain and middle section polyester cable are connected and fixed by chain rope socket I, the middle section polyester cable bottom end, bottom end anchor chain
Top and buoyant spheres I are connected and fixed by chain rope socket II.
3. semisubmersible platform catenary mooring system according to claim 1, which is characterized in that
The towing is embedded into formula anchor and is completely or partially embedded in seabed, and the tail end of the compound mooring line bottom end anchor chain tiles always
On sea bed.
4. semisubmersible platform catenary mooring system according to claim 1, which is characterized in that
The towing is embedded into formula anchor tail end and is provided with stern fast, and buoyant spheres II are provided on the stern fast.
5. semisubmersible platform catenary mooring system according to claim 3 or 4, which is characterized in that
It is provided with chock on the semisubmersible platform outer wall, mooring winch, institute are provided on the deck of the semisubmersible platform
Compound mooring line upper end is stated to be installed on the chock.
6. semisubmersible platform catenary mooring system according to claim 1, which is characterized in that
Four groups of anchoring systems are provided on the semisubmersible platform, the relatively described semisubmersible platform is arranged symmetrically in quadrangle；
Every group of anchoring system is provided with 2 or 3 compound mooring lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920046253.0U CN209305784U (en) | 2019-01-11 | 2019-01-11 | Semisubmersible platform catenary mooring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920046253.0U CN209305784U (en) | 2019-01-11 | 2019-01-11 | Semisubmersible platform catenary mooring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209305784U true CN209305784U (en) | 2019-08-27 |
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ID=67680795
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920046253.0U Active CN209305784U (en) | 2019-01-11 | 2019-01-11 | Semisubmersible platform catenary mooring system |
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| Country | Link |
|---|---|
| CN (1) | CN209305784U (en) |
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- 2019-01-11 CN CN201920046253.0U patent/CN209305784U/en active Active
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