CN105620677B - The colligation of tension leg anticollision and method for dismounting - Google Patents
The colligation of tension leg anticollision and method for dismounting Download PDFInfo
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- CN105620677B CN105620677B CN201610010143.XA CN201610010143A CN105620677B CN 105620677 B CN105620677 B CN 105620677B CN 201610010143 A CN201610010143 A CN 201610010143A CN 105620677 B CN105620677 B CN 105620677B
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- tension leg
- tension
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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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- 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
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
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Abstract
Colligation and method for dismounting the invention discloses a kind of tension leg anticollision, for before tension leg and platform tieback, binding method to include：S1, position are in two tension legs of adjacent angular, and tie is installed on a temporary buoy for tension leg, and the two ends of tie are hooked on temporary buoy；S2, decentralization herringbone rigging, near temporary buoy；S3, the two ends of rigging are hooked on two temporary buoys of tension leg respectively by ROV, two temporary buoys are connected；S4, rigging is sling by loop wheel machine, pull two tension leg opposite tilts to be close to；S5, one end of tie is departed from by it by ROV where temporary buoy, be hooked on the temporary buoy of adjacent strain leg, by inclined two tension legs positioning.In the present invention, the tension leg in adjacent angular is carried out by colligation operation by tie and temporary buoy, prevent adjacent strain leg from being collided under stick-up operating mode, it is simple to operate.
Description
Technical field
The present invention relates to field of ocean engineering, more particularly to a kind of tension leg anticollision colligation and method for dismounting.
Background technology
Deepwater floating platform is one of important equipment of deep water offshore and gas development.Tension leg platform (TLP) (TLP) is used as a kind of
Typical deepwater floating platform, compared to the floating platform TLP of other forms, it has, and exercise performance is good, anti-adverse environment is made
With ability it is strong, cost is relatively low the advantages of, have wide application in the exploitation of deepwater.Tension leg platform (TLP) is a kind of
The compliant platform of vertical mooring, is connected by some tension legs with seabed pile foundation, and tension leg is made up of high tensile steel tube, upper end
It is fixed on platform body, lower end is connected with seabed pedestal, or is connected directly between pile foundation top.Due to produced by TLP bodies
Buoyancy is more than gravity, therefore the tension leg moment is in the tensioned state of tension so that platform body is (horizontal in out-of-plane motion
Shake, pitching, heaving) be bordering on rigidity.
After tension leg completion is vertically-mounted, erectility is in ocean.Specified location is dragged in tension leg platform (TLP)
Afterwards, it is necessary to tension leg and platform are carried out into tieback.Before tension leg and platform tieback, adjacent tension leg is in wind, wave, stream
Collision is susceptible under effect, causes situations such as being damaged.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of colligation and dismounting of tension leg anticollision simple to operate
Method.
The technical solution adopted for the present invention to solve the technical problems is：A kind of colligation of tension leg anticollision is provided and is torn open
Except method, for tension leg and platform tieback before, binding method is comprised the following steps：
S1, position are in two tension legs of adjacent angular, are installed on a temporary buoy for the tension leg
Tie, the two ends of the tie are hooked on the temporary buoy；
S2, decentralization herringbone rigging, near the temporary buoy；
S3, the two ends of the rigging are hooked on two temporary buoys of the tension leg respectively by ROV, by two
The temporary buoy connection；
S4, the rigging is sling by loop wheel machine, pull two tension leg opposite tilts to be close to；
S5, one end of tie is departed from by ROV for it where the temporary buoy, be hooked on adjacent described
On the temporary buoy of power leg, by the inclined two tension leg positioning.
Preferably, in the step S1, the temporary buoy is provided with least one hook and is hooked for the tie.
Preferably, in the step S2, on hull, during herringbone rigging transferred into water by loop wheel machine.
Preferably, in the step S3, the fastener on the two ends of the rigging is hooked on described in two respectively by ROV
On the hook of the temporary buoy of tension leg.
Preferably, in the step S4, the tension leg angle of inclination is 11-2.5 °.
Preferably, method for dismounting is comprised the following steps：
S6, the rigging is sling by loop wheel machine；
S7, at least one end of the tie is taken off from the temporary buoy by ROV；
S8, the decentralization rigging, release the opposite close pulling force to the tension leg, and two tension legs are moved opposite to each other
Move and recover standing state.
Preferably, the method for dismounting is further comprising the steps of：
S9, the two ends of the rigging are taken off from two temporary buoys of the tension leg respectively by ROV.
In the present invention, the tension leg in adjacent angular is carried out by colligation operation by tie and temporary buoy, prevent adjacent
Tension leg collides under stick-up operating mode, simple to operate.When needing tieback to operate, then remove the colligation on tension leg
Rope, makes tension leg recover upright, and tieback is carried out with tension leg platform (TLP).
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the process schematic of the binding method of an embodiment in the present invention.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now compare accompanying drawing and describe in detail
Specific embodiment of the invention.
With reference to Fig. 1, the colligation of the tension leg anticollision of one embodiment of the invention and method for dismounting, for tension leg and platform
Before tieback, binding method may include following steps：
S1, position are in two tension legs 10 of adjacent angular, are pacified on a temporary buoy for tension leg 10 20
Dress tie 30, the two ends of tie 30 are hooked on temporary buoy 20, in such as Fig. 1 shown in (a).
The Main Function on tension leg 10 of temporary buoy 20 is to provide buoyancy so that the tension force on seabed pedestal 1
Leg 10 is in standing state.Temporary buoy 20 is provided with hook, is hooked for tie 30.Hook is preferably for convenience of ROV operations
ROV hooks.The preferred steel wire rope of tie 30.
S2, decentralization herringbone rigging 40, near temporary buoy 20.
Specifically, in the step, on hull 2, during herringbone rigging 40 transferred into water by loop wheel machine 3, in such as Fig. 1
Shown in (b).Rigging 40 is near the temporary buoy 20 equipped with tie 30.
S3, the two ends of rigging 40 are hooked on two temporary buoys of tension leg 10 20 respectively by ROV4, by two
Temporary buoy 20 is connected.
As shown in (c) to (d) in Fig. 1, the main operation by ROV (underwater robot) 4 of the step is realized；The two ends of rigging 40
Fastener is respectively equipped with, be hooked on the fastener at the two ends of rigging 40 on two hooks of temporary buoy 20 respectively by ROV4, forms connection.
Action to ROV4 on hull 2 is manipulated.
Wherein, rigging 40 includes two steel wire ropes, and first one end is connected on the stage casing of second by pulley, and
Can be slidably reciprocated on second steel wire rope.Generally, two rope capacities differ, and second long compared with first；First
The other end and second one end be equipped with fastener to be hooked on temporary buoy 20, loop wheel machine 3 connects the other end of second
With hoisting sling 40.
S4, rigging 40 is sling by loop wheel machine 3, pull two opposite tilts of tension leg 10 to be close to；As shown in (e) in Fig. 1.
The angle of inclination of tension leg 10 be meet require certain angle, specifically can be according to actual conditions depending on, such as 1-2.5 °.
When 3 hoisting sling 40 of loop wheel machine, the two ends that rigging 40 connects two temporary buoys 20 are lifted up so that two are faced
When floating drum 20 be close in opposite directions so that the tension leg 10 where two temporary buoys 20 is close in opposite directions.
Generally, it is mainly upper end when temporary buoy 20 is close in opposite directions installed in the upper end of tension leg 10, therefore tension leg 10
Incline and be close to.For example, the tension leg 10 long for 300m, the horizontal range for generally being moved in opposite being close to is 10m or so；
It can be 50m that two tension legs 10 are close to the distance between rear in opposite directions.Certainly, the inclination movement distance of tension leg 10 is according to actual feelings
Depending on condition.
S5, one end of tie 30 is departed from by it by ROV4 where temporary buoy 20, be hooked on adjacent strain leg 10
Temporary buoy 20 on, inclined two tension legs 10 are positioned, in such as Fig. 1 shown in (f).
After step S4, loop wheel machine 3 keeps the lifting to rigging 40 so that two tension legs 10 are maintained at and incline close shape
State, carries out step S5.
The length of tie 30 is roughly equal with the distance between opposite two close tension legs 10.
As shown in (g) and (h) in Fig. 1, after step s 5, loop wheel machine 3 can remove the lifting to rigging 40；Due to colligation
30 pairs of two connections of temporary buoy 20 of rope, two tension legs 10 are remained at and incline close state, will not be in wind, wave, stream
In the presence of rock and collide.
In tension leg platform (TLP) tieback, method for dismounting is performed, tie 30 is removed so that two tension legs 10 recover certainly
By standing state.The method for dismounting can be realized by reverse execution step S5-S1.
Specifically, in the present invention, in order with reference to shown in (h) to (a) in Fig. 1, method for dismounting is comprised the following steps：
S6, rigging 40 is sling by loop wheel machine 3.To slinging for rigging 40, tie 30 can be alleviated in two tension legs 10
Between tension state, to facilitate taking off for follow-up tie 30.
S7, at least one end of tie 30 is taken off from temporary buoy 20 by ROV4.Wherein, can be by tie 30 1
After end is taken off from a temporary buoy 20, the end hook is hung on another temporary buoy 20 so that the two ends of tie 30
All it is hooked on a temporary buoy 20.
Certainly, in other embodiments, also the two ends of tie 30 can be taken off from temporary buoy 20, by its time
Receive on hull 2.
After tie 30 is taken off, two close states of tension leg 10 then pull realization by rigging 40.
S8, decentralization rigging 40, release the opposite close pulling force to tension leg, and two tension legs are moved away from and recover station
Vertical state.
Rigging 40 is slowly transferred by loop wheel machine 3, pullling to two tension legs 10 is gradually eliminated, until two tension legs
10 return to vertical standing state.
Method for dismounting is further comprising the steps of：
S9, the two ends of rigging 40 are taken off from two temporary buoys of tension leg 10 20 respectively by ROV4.Rigging 40
After departing from the connection with temporary buoy 20, you can be recovered on hull 2.
After the standing state that tension leg 10 returns to vertical, you can it is carried out into tieback with platform.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of colligation of tension leg anticollision and method for dismounting, before tension leg and platform tieback, it is characterised in that colligation
Method is comprised the following steps：
S1, position are in two tension legs of adjacent angular, and colligation is installed on a temporary buoy for the tension leg
Rope, the two ends of the tie are hooked on the temporary buoy；
S2, decentralization herringbone rigging, near the temporary buoy；
S3, the two ends of the rigging are hooked on two temporary buoys of the tension leg respectively by ROV, by described in two
Temporary buoy is connected；
S4, the rigging is sling by loop wheel machine, pull two tension leg opposite tilts to be close to；
S5, one end of tie is departed from by ROV for it where the temporary buoy, be hooked on the adjacent tension leg
Temporary buoy on, by inclined two tension legs positioning；
Method for dismounting is comprised the following steps：
S6, the rigging is sling by loop wheel machine；
S7, at least one end of the tie is taken off from the temporary buoy by ROV；
S8, transfer the rigging, release the opposite close pulling force to the tension leg, two tension legs be moved away from and
Recover standing state.
2. the colligation of tension leg anticollision according to claim 1 and method for dismounting, it is characterised in that the step S1
In, the temporary buoy is provided with least one hook and is hooked for the tie.
3. the colligation of tension leg anticollision according to claim 1 and method for dismounting, it is characterised in that the step S2
In, on hull, during herringbone rigging transferred into water by loop wheel machine.
4. the colligation of tension leg anticollision according to claim 1 and method for dismounting, it is characterised in that the step S3
In, the fastener on the two ends of the rigging is hooked on two hooks of the temporary buoy of the tension leg respectively by ROV.
5. the colligation of tension leg anticollision according to claim 1 and method for dismounting, it is characterised in that the step S4
In, the tension leg angle of inclination is 1-2.5 °.
6. the colligation of tension leg anticollision according to claim 1 and method for dismounting, it is characterised in that the method for dismounting
It is further comprising the steps of：
S9, the two ends of the rigging are taken off from two temporary buoys of the tension leg respectively by ROV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610010143.XA CN105620677B (en) | 2016-01-06 | 2016-01-06 | The colligation of tension leg anticollision and method for dismounting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610010143.XA CN105620677B (en) | 2016-01-06 | 2016-01-06 | The colligation of tension leg anticollision and method for dismounting |
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| Publication Number | Publication Date |
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| CN105620677A CN105620677A (en) | 2016-06-01 |
| CN105620677B true CN105620677B (en) | 2017-06-20 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142117A (en) * | 2004-05-28 | 2008-03-12 | 深海航运科技有限责任公司 | Method for deploying floating platform |
| CN102128311A (en) * | 2010-12-09 | 2011-07-20 | 中国海洋石油总公司 | Method and device for installing typical underwater manifold in swing mode |
| CN204846291U (en) * | 2015-02-13 | 2015-12-09 | 南京艾曼达船舶设备制造有限公司 | Novel multi -functional boats and ships ligature component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9604708B2 (en) * | 2014-05-08 | 2017-03-28 | Arcandra Tahar | Multi-column tension leg platform |
-
2016
- 2016-01-06 CN CN201610010143.XA patent/CN105620677B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142117A (en) * | 2004-05-28 | 2008-03-12 | 深海航运科技有限责任公司 | Method for deploying floating platform |
| CN102128311A (en) * | 2010-12-09 | 2011-07-20 | 中国海洋石油总公司 | Method and device for installing typical underwater manifold in swing mode |
| CN204846291U (en) * | 2015-02-13 | 2015-12-09 | 南京艾曼达船舶设备制造有限公司 | Novel multi -functional boats and ships ligature component |
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| Publication number | Publication date |
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| CN105620677A (en) | 2016-06-01 |
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Address after: 4th Floor, Main Building, Science and Technology Building, No. 1067 Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province, 518067 Patentee after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: 4th Floor, Main Building, Science and Technology Building, No. 1067 Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province, 518067 Patentee before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |