CN107813910A - A kind of air-gap compensation system for marine drilling platform - Google Patents
A kind of air-gap compensation system for marine drilling platform Download PDFInfo
- Publication number
- CN107813910A CN107813910A CN201711009121.2A CN201711009121A CN107813910A CN 107813910 A CN107813910 A CN 107813910A CN 201711009121 A CN201711009121 A CN 201711009121A CN 107813910 A CN107813910 A CN 107813910A
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- China
- Prior art keywords
- platform
- air
- gap compensation
- main
- support platform
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
Abstract
The present invention relates to field of ocean engineering, specifically a kind of air-gap compensation system for marine drilling platform, including main platform body, the bottom of the main platform body are provided with platform column and platform moon pool；Support platform, the support platform are provided with the second opening of the first opening and the platform moon pool corresponding to the platform column；Spring system, the spring system are arranged between the main platform body and the support platform；Air-gap compensation device, the air-gap compensation device is vertically connected at the bottom of the support platform, by carrying out drainage to wave, dynamic load caused by motion can effectively be cleared up, the wave force suffered by platform main deck is greatly reduced, effectively solves the problems, such as the wave slamming that platform is subject to.
Description
Technical field
The present invention relates to field of ocean engineering, specifically a kind of air-gap compensation system for marine drilling platform.
Background technology
With the depleted of landing field petroleum resources, offshore oil exploitation becomes increasingly have future in engineering applications, closely
The medium that booming ocean platform is exploited as offshore oil and gas resource over a little years, plays more and more important effect, mesh
Before, the heave compensation device on platform designs specifically for thribble, prevents thribble from following platform motion to cause the pressure of the drill unstable, for
The Wave Loads that platform is subject to, particularly slamming act on, and go back the fairly perfect method of neither one, platform is in operation process
In in order to avoid due to caused by wave slamming act on, high to air gap requirements, common practices is to raise main deck, so as to keep away
Exempt from wave to contact with main deck, make however, this way not only could not fundamentally solve slamming of the large scale wave to platform
With, while platform center of gravity has been raised, stability is reduced, also increases the stress and torque of platform Each part, is greatly increased
Construction cost is added.
In summary, current marine drilling platform has that air gap is excessive, and stability is inadequate, Structural strength calls it is higher and its
The problem of caused construction cost is higher.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of air-gap compensation system for marine drilling platform, with
Based on the device of several variable cross-sections, by carrying out drainage to wave, the wave moved straight up is changed into water
Square cause the process that falls into oblivion to, the wave of last out of phase and the interphase interaction of wave, wave force is born in the device
During effect, suffered power is passed into spring, dynamic load caused by moving can be effectively cleared up, greatly reduce flat
Wave force suffered by platform main deck, effectively solves the problems, such as the wave slamming that platform is subject to.
To solve above technical problem, the present invention uses following technical scheme：A kind of air gap for marine drilling platform
Compensation system, including
- main platform body, the bottom of the main platform body are provided with platform column and platform moon pool；
- support platform, the support platform were provided with corresponding to the first opening of the platform column and the platform moon
Second opening in pond；
- spring system, the spring system are arranged between the main platform body and the support platform；
- air-gap compensation device, the air-gap compensation device are vertically connected at the bottom of the support platform.
Further, the appearance and size of first opening and the described second opening is respectively greater than the platform column and institute
State the appearance and size of platform moon pool.
Further, the spring system include with array way be arranged at the main platform body and the support platform it
Between spring assembly, one end of the spring assembly is connected to the main platform body, and the other end is connected with the support platform.
Further, pad is provided between the spring assembly and the main platform body at link position.
Further, the rounded at the edge of the support platform is set.
Further, the air-gap compensation device profile is approximate infundibulate, and bottom sectional area is less than top profile face
Product, in the edge that the area of section is maximum, tangent line is arranged to horizontal direction.
Compared with prior art, the beneficial effects of the present invention are：1st, air gap reduces, and column shortens, and main platform body
Substantially reduced by the probability that slamming acts on；
2nd, center of gravity reduces, and stability increase, especially for semisubmersible drilling platform, its stability is particularly problematic, air gap
Stability optimization caused by reduction is clearly；
3rd, after structure entirety center of gravity declines, the environmental load of platform optimizes significantly, further optimizing structure design；
4th, the optimization of the high-strength steel brought by structure design and the optimization of local strengthening, save consumptive material, reduce and build
Cause this.
Brief description of the drawings
Fig. 1 is a kind of cross section structure schematic diagram of air-gap compensation system for marine drilling platform of the present invention.
Fig. 2 is the structural representation of a preferred embodiment of the present invention.
Fig. 3 is Fig. 2 elevational schematic view.
Fig. 4 is the elevational schematic view of main platform body of the present invention, platform column and platform moon pool.
Fig. 5 is the structural representation of support platform of the present invention.
Fig. 6 is Fig. 5 diagrammatic cross-section.
Fig. 7 is Fig. 6 a-a diagrammatic cross-sections.
Fig. 8 is Fig. 6 b-b diagrammatic cross-sections.
Fig. 9 is Fig. 6 c-c diagrammatic cross-sections.
Figure 10 is Fig. 6 d-d diagrammatic cross-sections.
Figure 11 is the air-gap compensation device three dimensional structure diagram of a preferred embodiment of the present invention.
In figure：1st, main platform body；11st, platform column；12nd, platform moon pool；2nd, support platform；21st, the first opening；22nd,
Two openings；3rd, spring system；4th, air-gap compensation device.
Embodiment
To make to have further understanding and understanding with the effect reached to the architectural feature of the present invention, to preferred embodiment
Coordinate with accompanying drawing and be described in detail, be described as follows：
Reference picture 1-11, show a kind of air-gap compensation system for marine drilling platform of preferred embodiment, platform
Cylinder 1, spring system 3 and support platform 2 are in vertical arrangement, and spring system 3 includes multiple spring assemblies, and spring assembly has
Less stiffness factor, guarantee to absorb more Wave energy, so as to mitigate effect of the wave to main platform body 1.
Specifically, the shape of cross section of support platform 2 is symmetrical structure in preferred embodiment, and the cross section of support platform 2
Opening is set, and is carried out according to four platform columns 11 and the opening correspondence position of platform moon pool 12, wherein, support platform 2
First opening 21 and the second 22 sizes of opening are more slightly larger than size corresponding to platform column 11 and platform moon pool 12, on the one hand can be with
Ensure there can be more sufficient relative motion between support platform 2 and main platform body 1, larger frictional force will not be produced, from
And wave force is transmitted to main platform body 1；Still further aspect, larger surplus can allow support platform 2 as wave goes out
Existing horizontal-shift, while wave vertical active force is cleared up, moreover it is possible to which resolution is made due to horizontal caused by process of wave propagation
Firmly, rounding is provided with the outer rim of support platform 2, can avoided due to stress raisers caused by wave action.
In addition, the short transverse of the spring assembly of spring system 3 is perpendicular to the direction of the water surface, support in preferred embodiment
The upper end of platform 2 and along support platform 2 short transverse be connected with array format arrangement spring assembly, the bullet of spring system 3
Spring device upper end is connected to the bottom of main platform body 1.
Specifically, being evenly arranged spring assembly in preferred embodiment under main platform body 1, support is connected with spring assembly
Platform 2, and support platform 2 is to be flexibly connected with main platform body 1, support platform 2 can be swung up and down by wave force, with
This can ensure that main platform body is not influenceed by wave action simultaneously, in the scope of activities of support platform 2, spring system 3
The wave force transmitted by support platform 2 can be absorbed, ensure that main platform body 1 is not acted on by wave.
In addition, the bottom of support platform 2 is connected with some air-gap compensation devices 4, and each pair air-gap compensation in preferred embodiment
Device 4 is symmetrical arranged, and the size of air-gap compensation device 4 changes according to platform partial structurtes, and is adapted to main platform body 1
Shape, it can not have to set in the less position of some sizes, because for the less position of this class formation, bear wave action
Be limited in scope, it is while also low compared with other regions by the probability of wave action, wave is drained in air-gap compensation device 4
Afterwards, the support platform 2 in some positions can substantially be reached not by wave action, air-gap compensation device 4 is in arrangement
Main platform body 1, specific arrangement such as section a-a, b-b, c-c, shown in d-d are covered to the full extent.
More specifically, the profile of air-gap compensation device 4 is approximate infundibulate, as shown in figure 11, bottom in preferred embodiment
Smaller, cross section gradually increases from the bottom up, and increase is more and more obvious, and wave action is born in air-gap compensation device 4
During, bottom slamming effect is born in bottom cross section, and flare slamming effect is born in the side of drainage, due to bottom slamming often
It is more order of magnitude greater than flare slamming, thus the contour structures of air-gap compensation device 4 for the optimization of slamming be very it will be evident that
And by the symmetry of itself, in the case of the air-gap compensation device 4 being arranged symmetrically while by wave action, it can produce
Two equal, in opposite direction jets of raw speed, wave action disappearance after interaction, wherein, air-gap compensation device 4 is drawing
Destination county is flowed, i.e., at the maximum jet exit in cross section, tangent line is horizontal direction, ensures wave when projecting, direction is
Horizontal direction, avoid wave from continuing upward motion, cause direct bottom slamming to act on the even main platform body 1 of support platform 2.
In addition, the air-gap compensation system for marine drilling platform that this preferred embodiment provides, including pass through spring system
On the one hand main platform bodies 1 and the support platform 2 of the connection of system 3, the effect of spring can be absorbed during wave action support platform 2
The energy of support platform 2 is passed to, on the other hand can function as kinetic damping, during larger wave action is born,
The motion amplitude of support platform 2 is larger, and because the structure of support platform 2 is lighter, therefore additional mass is smaller, is produced by wave action
Heave, rolling motion positive effect, the now setting of spring can absorb some phase region in process of wave propagation
Between Wave energy, mitigate motion amplitude to a certain extent, some air-gap compensation devices 4 be provided with below support platform 2, should
Device can adjust the motion of wave, realize cancelling out each other for Wave energy, realize the optimization of slamming, so as to compensate for air gap
Corresponding performance.
It is last it should be noted that：Various embodiments above is only used for making further specifically technical scheme
It is bright, and be not used to limit it；Those skilled in the art is it should be appreciated that it can still be described to various embodiments of the present invention
The technical characteristic of technical scheme modify or polish；And these modifications or polishing do not make technical scheme
Essence depart from the spirit and scope of each embodiment technical scheme.
Claims (6)
- A kind of 1. air-gap compensation system for marine drilling platform, it is characterised in that：Including- main platform body (1), the bottom of the main platform body (1) are provided with platform column (11) and platform moon pool (12)；- support platform (2), the support platform (2) be provided with corresponding to the platform column (11) first opening (21) and Second opening (22) of the platform moon pool (12)；- spring system (3), the spring system are arranged between the main platform body (1) and the support platform (2)；- air-gap compensation device (4), the air-gap compensation device (4) are vertically connected at the bottom of the support platform (2).
- A kind of 2. air-gap compensation system for marine drilling platform according to claim 1, it is characterised in that：Described The appearance and size of one opening (21) and second opening (22) is respectively greater than the platform column (11) and the platform moon pool (12) appearance and size.
- A kind of 3. air-gap compensation system for marine drilling platform according to claim 1, it is characterised in that：The bullet Spring system (3) includes being arranged at spring assembly between the main platform body (1) and the support platform (2) with array way, One end of the spring assembly is connected to the main platform body (1), and the other end is connected with the support platform (2).
- A kind of 4. air-gap compensation system for marine drilling platform according to claim 3, it is characterised in that：The bullet Pad is provided between spring device and the main platform body (1) at link position.
- A kind of 5. air-gap compensation system for marine drilling platform according to claim 1 or 3, it is characterised in that：Institute The rounded at the edge for stating support platform (2) is set.
- A kind of 6. air-gap compensation system for marine drilling platform according to claim 1, it is characterised in that：The gas Gap compensation device (4) profile is approximate infundibulate, and bottom sectional area is less than top profile area, in the side that the area of section is maximum At edge, tangent line is arranged to horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009121.2A CN107813910B (en) | 2017-10-25 | 2017-10-25 | Air gap compensation system for offshore drilling platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009121.2A CN107813910B (en) | 2017-10-25 | 2017-10-25 | Air gap compensation system for offshore drilling platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107813910A true CN107813910A (en) | 2018-03-20 |
| CN107813910B CN107813910B (en) | 2022-06-14 |
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ID=61603088
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009121.2A Active CN107813910B (en) | 2017-10-25 | 2017-10-25 | Air gap compensation system for offshore drilling platform |
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| CN (1) | CN107813910B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550162A (en) * | 2019-09-09 | 2019-12-10 | 浙江海洋大学 | Marine anti-seismic anti-rolling structure |
| CN113998064A (en) * | 2021-11-03 | 2022-02-01 | 江苏科技大学 | High-bearing semi-submersible drilling platform sea wave compensation device and control method |
Citations (5)
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| JPH06108433A (en) * | 1992-10-01 | 1994-04-19 | Hitachi Zosen Corp | Floating wave dissipation levee |
| KR20140092992A (en) * | 2013-01-17 | 2014-07-25 | 삼성중공업 주식회사 | Semi-submergible offshore structure |
| CN204659985U (en) * | 2015-04-08 | 2015-09-23 | 江苏科技大学 | Reduce the device of the initial air gap of semi-submerged platform |
| KR20160042524A (en) * | 2014-10-10 | 2016-04-20 | 삼성중공업 주식회사 | Floating structure |
| KR20160055325A (en) * | 2014-11-07 | 2016-05-18 | 삼성중공업 주식회사 | Semi-submersible offshore structure |
-
2017
- 2017-10-25 CN CN201711009121.2A patent/CN107813910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06108433A (en) * | 1992-10-01 | 1994-04-19 | Hitachi Zosen Corp | Floating wave dissipation levee |
| KR20140092992A (en) * | 2013-01-17 | 2014-07-25 | 삼성중공업 주식회사 | Semi-submergible offshore structure |
| KR20160042524A (en) * | 2014-10-10 | 2016-04-20 | 삼성중공업 주식회사 | Floating structure |
| KR20160055325A (en) * | 2014-11-07 | 2016-05-18 | 삼성중공업 주식회사 | Semi-submersible offshore structure |
| CN204659985U (en) * | 2015-04-08 | 2015-09-23 | 江苏科技大学 | Reduce the device of the initial air gap of semi-submerged platform |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550162A (en) * | 2019-09-09 | 2019-12-10 | 浙江海洋大学 | Marine anti-seismic anti-rolling structure |
| CN110550162B (en) * | 2019-09-09 | 2021-01-26 | 浙江海洋大学 | Marine anti-seismic anti-rolling structure |
| CN113998064A (en) * | 2021-11-03 | 2022-02-01 | 江苏科技大学 | High-bearing semi-submersible drilling platform sea wave compensation device and control method |
| CN113998064B (en) * | 2021-11-03 | 2024-01-30 | 江苏科技大学 | High-bearing semi-submersible drilling platform sea wave compensation device and control method |
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| Publication number | Publication date |
|---|---|
| CN107813910B (en) | 2022-06-14 |
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