CN105035260B - The method that platform upper chunk is thrown aside at support overall pulling down sea is floated using double ships - Google Patents
The method that platform upper chunk is thrown aside at support overall pulling down sea is floated using double ships Download PDFInfo
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- CN105035260B CN105035260B CN201510257632.0A CN201510257632A CN105035260B CN 105035260 B CN105035260 B CN 105035260B CN 201510257632 A CN201510257632 A CN 201510257632A CN 105035260 B CN105035260 B CN 105035260B
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Abstract
The invention discloses a kind of the method that platform upper chunk is thrown aside at support overall pulling down sea is floated using double ships, throw aside platform and be made up of jacket and upper chunk in the sea, after the upper chunk of ocean platform is separated with jacket cutting, its entirety is lifted from the both sides of upper chunk and is moved away from jacket using two floating support barges, the scene of completion is removed, and is transported to destination upper chunk using cargo ship.Platform upper chunk is thrown aside at the method overall pulling down sea for floating support using double ships, can keep throwing aside the integrality of platform upper chunk, is conducive to chunk to renovate and recycle again, can avoid using large-scale floating crane in addition, such that it is able to expense is greatly lowered.
Description
Technical field
The invention belongs to field of ocean engineering, more particularly to one kind is thrown aside flat using the floating support overall pulling down sea of double ships
The method of platform upper chunk.
Background technology
According to international convention and domestic relevant laws and regulations, the latter year inner platform of oil gas field stopping production must be removed, thus Bohai Sea Gulf
Platform is thrown aside at following 10 years at least tens seas will be removed.The projected life of general offshore platform was on 20 years left sides
It is right.To the year two thousand twenty, in addition to some platforms lengthened the life by transformation, the most of platform built in the past for 2002 all will be into abandoning
Put the stage.
The dismounting for throwing aside platform is mainly contemplated that the dismounting of upper chunk structure and the dismounting of jacket.Upper group
The dismounting of block structure can be divided into overall pulling down and remove two kinds of methods with blocked breaking.According to the method that blocked breaking is removed, then must be
Implement structure cutting on platform, it is time-consuming, and cause the dangerous larger of marine environmental pollution.Integrally torn open for superstructure
The method removed, conventional method is after the whole superstructure of platform is separated with jacket, to be directly lifted on barge.The method
Workload is minimum, but needs to use the large-scale crane ship with enough elevating capacities and somewhat expensive.Cannot be right during due to removing
The weight and center of gravity of chunk make accurate assessment, and the risk of integral lifting is larger.
The content of the invention
The present invention provides a kind of using the floating support overall pulling down sea of double ships to solve technical problem present in known technology
On throw aside the method for platform upper chunk, the method can avoid using the day expensive large-scale crane ship of hire charge, such that it is able to big
Amplitude reduction expense.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：One kind is floated using double ships
The method that platform upper chunk is thrown aside at support overall pulling down sea, the sea is thrown aside platform and is made up of jacket and upper chunk
, the overall pulling down method of the upper chunk is constructed according to following steps：
1) need to complete following work before the overall pulling down for implementing the upper chunk：
1.1) sea is thrown aside platform and has completed to throw aside well head work；
1.2) two bottom sides in the upper chunk are respectively provided with least 2 hemispherical strong points for extending downwardly, described
The hemispherical strong point is located at outside the outline of the jacket；
1.3) two floating support barges are respectively disposed on the sea and throw aside platform both sides, two floating support barges are provided with
One common displacement control system, is provided with every floating support barge and corresponds cooperation with the hemispherical strong point
Shipboard supporting construction and anchoring system, the shipboard supporting construction be located at it is described it is floating support barge near the side of platform, it is described
Shipboard supporting construction includes support frame, and support frame as described above is affixed with the floating support barge, is provided with overboard on support frame as described above
The cantilever of extension, sleeve is connected with the cantilever, is provided with jack, rigid mount from bottom to up in the sleeve, is delayed
The supporting construction of flushing device and the hemispherical strong point, the supporting construction of the hemispherical strong point is provided with and the hemispherical
The tray of strong point adaptation, the tray forms sphere-contact with the hemispherical strong point, and the coefficient of kinetic friction of the two is small
In 0.1；Support mandrel is had in the tray, the support mandrel is fixed on the rigid mount through the buffer unit
On, tray supporting construction is connected with the top of the support mandrel, the outline of the tray supporting construction is tubular structure,
Be embedded with yielding rubber piece in the cylindrical outer wall of the tray supporting construction, the outer surface of the yielding rubber piece with it is described
The inner surface contact of sleeve；
1.4) the front mooring for throwing aside platform at the sea anchors a cargo ship；
1.5) upper chunk is cut with the jacket separates；
2) after sea situation is implemented, start to start the overall pulling down construction of the upper chunk, key step is as follows：
2.1) by the top mark height of the floating support barge ballast to the tray thereon in the hemispherical strong point
Bottom absolute altitude；Two floating support barges are controlled synchronously to throw aside platform near the sea using the displacement control system, until
All trays and all hemispherical strong points consistency from top to bottom correspondingly；
2.2) the floating support barge unloading draining of synchronous averaging two, and control two institutes using the displacement control system
The displacement of floating support barge is stated, all trays is coincide with all hemispherical strong points and stress；
2.3) two floating support barges are made to continue synchronous unloading drainings, progressively by the weight of the upper chunk from described
Jacket is transferred in two shipboard supporting constructions of the floating support barge, and the bottom and jacket for making the upper chunk are being hung down
Separate fully up；
In weight transfer process, the lifting of the jack is adjusted, make the stress of all shipboard supporting constructions equal
It is even；
2.4) when bottom and the jacket of the upper chunk are separated to a design height on vertical, two are stopped
The unloading draining of described floating support barge, and move forward two floating support barges using the displacement control system, sail
To the cargo ship；
2.5) two floating support barges by the upper chunk on the cargo ship, using the cargo ship by institute
State upper chunk transport to destination.
The cargo ship uses monomer flat top barge, and the support of chunk bottom is set on the deck of the monomer flat top barge
Seat；
The monomer flat top barge is in the step 1.4) in mooring anchoring process be：Stern is arranged in a crossed manner using two
Hawser be connected with the jacket, bow using other two hawsers anchor fix；
Implementing the step 2.5) before, the monomer flat top barge draining unloading makes chunk bottom support base
Top mark height in the step 2.4) described in upper chunk bottom absolute altitude；
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges transport to the monomer flat top barge top upper chunk to, and make institute
State the setting supporting construction and the chunk bottom support base consistency from top to bottom of upper chunk；
2.5.2 monomer flat top barge draining unloading) is made to float, until the monomer flat top barge is by the upper group
Block holds up from two floating support barges；
2.5.3) two floating support barges sail out of the monomer flat top barge, at the same time, will be described using connector
Upper chunk is fixed in the monomer flat top barge,
2.5.4 the mooring anchoring of the monomer flat top barge) is released, the monomer flat top barge is dragged to by mesh using tugboat
Ground.
The cargo ship uses partly latent barge, and a stability column is respectively provided with four corners on the deck of the partly latent barge；
The partly latent barge is in the step 1.4) in state be：The partly latent barge is existed in bow using two hawsers
Front anchoring is fixed, and the partly latent barge in bow, using other two hawsers arranged in a crossed manner, refute respectively by floating support described with
Throw aside the side connection of platform in the close sea of ship；
Implementing the step 2.5) before, the partly latent barge is sunk under the water, and make the deck of the partly latent barge
The bottom absolute altitude of the absolute altitude of upper surface floating support barge described less than two；
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges carry the upper chunk and sail to the overcentre of the partly latent barge；
2.5.2 the partly latent barge) is made to float up to towage designed draft depth, now, on the deck of the partly latent barge
Keep afloat the above, carry two floating support barge loadings of the upper chunk on the deck of the partly latent barge；
2.5.3) lower support structure of the upper chunk is installed on the deck of the partly latent barge；
2.5.4 the mooring anchoring of the partly latent barge) is released, the partly latent barge is dragged to by destination using tugboat.
The buffer unit includes putting off multilayer rubber and multilayer iron plate together from top to bottom, the sheet rubber and
The iron plate is arranged in a crossed manner.
The displacement control system carries out Bit andits control by the anchoring system to the corresponding floating support barge.
A dynamic positioning system is installed on every floating support barge, the displacement control system is fixed by the power
Position system carries out Bit andits control to the corresponding floating support barge.
The afterbody of every floating support barge is provided with the derivation frame for overboard extending in the side that platform is thrown aside near sea
Frame, the derivation framework is provided with throws aside the relative derivation facade of platform with sea, and the derivation facade is from the floating support barge
Afterbody is gradually distance from sea and throws aside platform.
Every floating support barge is provided with Anti-collision fender I in the side that platform is thrown aside near sea, in the jacket
Both sides are equipped with Anti-collision fender II, and the Anti-collision fender II is relative with the Anti-collision fender I.
The present invention has the advantages and positive effects that：Separated with jacket cutting by the upper chunk of ocean platform
Afterwards, its entirety is lifted from the both sides of upper chunk and is moved away from jacket using two floating support barges, the scene of completion is removed, and is utilized
Platform upper chunk is thrown aside at the method overall pulling down sea that double ships float support, can keep throwing aside the integrality of platform upper chunk,
Be conducive to chunk to renovate and recycle again, can avoid using large-scale floating crane in addition, such that it is able to expense is greatly lowered.
Brief description of the drawings
Figure 1A is the schematic diagram of the floating support barge that the present invention is used；
Figure 1B is the elevation of Figure 1A；
Fig. 1 C are the sectional view of Figure 1B middle sleeves；
Fig. 1 D are the side view of the partly latent barge that the present invention is used；
Fig. 1 E are the top view of the partly latent barge that the present invention is used；
Fig. 1 F are the monomer flat top barge side view that the present invention is used；
Fig. 1 G are the monomer flat top barge top view that the present invention is used；
Fig. 2A be step 1.3 of the invention) schematic diagram；
Fig. 2 B and Fig. 2 C be step 2.1 of the invention) schematic diagram；
Fig. 2 D be step 2.3 of the invention) schematic diagram；
Fig. 3 A, Fig. 3 B and Fig. 3 C are step 2.4 of the invention) schematic top plan view；
Fig. 4 A and Fig. 4 B for the present invention using monomer flat top barge as cargo ship when step 2.5.1) schematic diagram；
Fig. 4 C are the elevation of Fig. 4 B；
Fig. 4 D and Fig. 4 E for the present invention using monomer flat top barge as cargo ship when step 2.5.2) schematic diagram；
Fig. 4 F for the present invention using monomer flat top barge as cargo ship when step 2.5.3) schematic diagram；
Fig. 4 G for the present invention using monomer flat top barge as cargo ship when step 2.5.4) schematic diagram；
Fig. 5 A and Fig. 5 B for the present invention using partly latent barge as cargo ship when step 2.5.1) schematic diagram；
Fig. 5 C are the elevation of Fig. 5 B；
Fig. 5 D for the present invention using partly latent barge as cargo ship when step 2.5.2) and step 2.5.3) schematic diagram；
Fig. 5 E for the present invention using partly latent barge as cargo ship when step 2.5.4) schematic diagram.
In figure：1st, support barge, 2, support frame, 3, sleeve, 4 jack, 5, twin drum winch, 6, hawser, 7, Anti-collision fender are floated
Ith, 8, derive framework, 9, jacket, 10, Anti-collision fender II, 11, upper chunk, 12, the hemispherical strong point, 13, tugboat, 14, drag
Cable, 15, horizontal plane, 16, partly latent barge, 17, tray, 18, stability column, 19, buffer unit, 20, lower support structure, 21, list
Body flat top barge, 22, chunk bottom support base, 23, slideway, 24, connector, 25, rigid mount, 26, support mandrel, 27, support
Bowl supporting construction, 28, yielding rubber piece.
Specific embodiment
For the content of the invention of the invention, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
Accompanying drawing is referred to, it is a kind of to float the method that platform upper chunk is thrown aside at support overall pulling down sea, the sea using double ships
On throw aside platform and be made up of jacket 9 and upper chunk 11, the overall pulling down method of the upper chunk 11 is according to following
Step is constructed：
1) need to complete following work before the overall pulling down for implementing the upper chunk 11：
1.1) sea is thrown aside platform and has completed to throw aside well head work.
1.2) two bottom sides in the upper chunk 11 are respectively provided with least 2 hemispherical strong points 12 for extending downwardly,
The hemispherical strong point 12 is located at outside the top outline of the jacket 9.
1.3) two floating support barges 1 are respectively disposed on the sea and throw aside platform both sides, two floating support barges 1 set
There is a common displacement control system, be provided with and a pair of the hemispherical strong point 12 1 on every floating support barge 1
The shipboard supporting construction and anchoring system that should coordinate, the shipboard supporting construction are located at the floating support barge 1 near the one of platform
Side, the shipboard supporting construction includes support frame 2, and support frame as described above 2 is affixed with the floating support barge 1, on support frame as described above 2
The cantilever for overboard extending is provided with, sleeve 3 is connected with the cantilever, jack is provided with from bottom to up in the sleeve 3
4th, the supporting construction of rigid mount 25, buffer unit 19 and the hemispherical strong point 12, the branch of the hemispherical strong point 12
Support structure is provided with the tray 17 being adapted to the hemispherical strong point 12, and the tray 17 is formed with the hemispherical strong point 12
Sphere-contact, and the coefficient of kinetic friction of the two is less than 0.1；Support mandrel 26, the supporting-core are had in the tray 17
Axle 26 is fixed on the rigid mount 25 through the buffer unit 19, and tray is connected with the top of the support mandrel 26
Supporting construction 27, the outline of the tray supporting construction 27 is tubular structure, outside the tubular of the tray supporting construction 27
Yielding rubber piece 28 is embedded with wall, the outer surface of the yielding rubber piece 28 is contacted with the inner surface of the sleeve 3.
Buffer unit 19 be set in the shipboard supporting construction be in order to during upper chunk 11 is removed, reduce steel with
Impact force when steel is contacted；In the presence of wind, wave, stream, the motion of ship is will be with the top of shipboard supporting construction and is moved,
And the hemispherical strong point of the bottom of upper chunk 11 is likely to hit, now buffer unit 19 will be played in shipboard supporting construction
The effect of buffering percussive force.In the bottom of buffer unit 19, placement jack 4 is able to finely tune the lifting of shipboard supporting construction,
The purpose of each shipboard supporting construction stress is adjusted so as to reach.This fine setting is primarily to reply is removed upper chunk 11
The centre-of gravity shift phenomenon being likely to occur, so as to reduce operational risk.
Using above-mentioned shipboard supporting construction, the two of motion is transferred to from fixed jacket 9 in the weight of upper chunk 11
During floating support barge 9, only transmit vertical gravity and do not transmit the moment of flexure caused by ship itself rolling substantially, so as to protect
The member structure of upper chunk, while also protecting the supporting construction of floating support barge.
1.4) the front mooring for throwing aside platform at the sea anchors a cargo ship；
1.5) upper chunk 11 is cut with the jacket 9 separates；
2) after sea situation is implemented, start to start the overall pulling down construction of the upper chunk 11, key step is as follows：
2.1) by the top mark height of the floating support ballast of barge 1 to the tray 17 thereon in the hemispherical strong point
12 bottom absolute altitude；Two floating support barges 1 are controlled synchronously to throw aside platform near the sea using the displacement control system,
Until all trays 17 and all hemispherical strong points 12 consistency from top to bottom correspondingly.
2.2) the floating support barge 1 unloading draining of synchronous averaging two, and control two using the displacement control system
The displacement of the floating support barge 1, makes all trays 17 be coincide with all hemispherical strong points 12 and stress.
2.3) two floating support barges 1 is continued synchronous unloading draining, progressively by the weight of the upper chunk 11 from
The jacket 9 is transferred in two shipboard supporting constructions of the floating support barge 1, is made the bottom of the upper chunk 11 and is led
Pipe support 9 is kept completely separate on vertical.
In weight transfer process, the tray 17 keeps sphere-contact, contact surface light with the hemispherical strong point 12
Slide and with very low coefficient of friction.The lifting of the jack 4 is adjusted, makes the stress of all shipboard supporting constructions equal
It is even.
2.4) when bottom and the jacket 9 of the upper chunk 11 are separated to a design height on vertical, two are stopped
The unloading draining of described floating support barge 1, and move forward two floating support barges 1 using the displacement control system,
The cargo ship is driven towards, the upper chunk 11 departs from jacket 9 in the horizontal direction.
2.5) be mounted in the upper chunk 11 on the cargo ship by two floating support barges 1, uses the cargo ship
The upper chunk 11 is transported to destination.
Being transported to destination the upper chunk 11 using the cargo ship has two methods：
First method：Using monomer flat top barge 21, chunk bottom is set on the deck of the monomer flat top barge 21
Portion's support base 22.
The monomer flat top barge 21 is in the step 1.4) in mooring anchoring process be：Stern is set using two intersections
The hawser 6 put is connected with the jacket 9, and bow is anchored using other two hawsers 6 and fixed.
Implementing the step 2.5) before, the draining of monomer flat top barge 21 unloading supports the chunk bottom
Seat 22 top mark height in the step 2.4) described in upper chunk 11 bottom absolute altitude.
In the present embodiment, chunk bottom support base 22 is arranged on slideway 23, and slideway 23 is fixed on the monomer flat board
On the deck of barge 21.
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges 1 transport to the top of the monomer flat top barge 21 upper chunk 11 to,
And make the setting supporting construction of the upper chunk 11 and the consistency from top to bottom of chunk bottom support base 22.
2.5.2 the draining of monomer flat top barge 21 unloading is floated, until the monomer flat top barge 21 will be described on
Portion's chunk 11 holds up from two floating support barges 1.
2.5.3) two floating support barges 1 sail out of the monomer flat top barge 21, at the same time, will using connector 24
The upper chunk 11 is fixed in the monomer flat top barge 21.
2.5.4 the mooring anchoring of the monomer flat top barge 21) is released, using tugboat 13 by the monomer flat top barge 21
It is dragged to destination.The tugboat 13 is connected with the monomer flat top barge 21 using towing cable 14.
In above process, the deck of the monomer flat top barge 21 is always positioned on horizontal plane 15.
Second method：Using partly latent barge 16, one is respectively provided with four corners on the deck of the partly latent barge 16 steady
Fixed column 18.Four stability columns 18 make partly latent barge 16 possess broad deck plane, so that can respectively positioned at four corners on deck
To deliver large-sized goods.
The partly latent barge 16 is in the step 1.4) in state be：The partly latent barge 16 uses two cables in bow
Rope 6 anchors in front and fixes, the partly latent barge 16 bow using other two hawsers 6 arranged in a crossed manner respectively with an institute
Throw aside the side connection of platform in the close sea for stating floating support barge 1.
Implementing the step 2.5) before, the partly latent barge 16 is sunk under the water, and make the partly latent barge 16
The bottom absolute altitude of the absolute altitude of deck upper surface floating support barge 1 described less than two.
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges 1 carry the upper chunk 11 and sail to the center of the partly latent barge 16
Side；
2.5.2 the partly latent barge 16) is made to float up to towage designed draft depth, now, the first of the partly latent barge 16
Kept afloat on plate the above, two floating support barges 1 for carrying the upper chunk 11 are loaded in the partly latent barge 16
On deck.
2.5.3) lower support structure 20 of the upper chunk is installed on the deck of the partly latent barge 16.
2.5.4 the mooring anchoring of the partly latent barge 16) is released, the partly latent barge 16 is dragged to by purpose using tugboat 13
Ground.The tugboat 13 is connected with the partly latent barge 16 using towing cable 14.
Above-mentioned dismounting operation need wait good growing weather window can carry out.
Above-mentioned buffer unit 19 includes putting off multilayer rubber and multilayer iron plate together, the sheet rubber from top to bottom
It is arranged in a crossed manner with the iron plate.
Above-mentioned displacement control system carries out Bit andits control by the anchoring system to the corresponding floating support barge 1.At this
In embodiment, the anchoring system includes twin drum winch 5 and hawser 6, and above-mentioned displacement control system is by controlling twin drum winch 5
The hawser 6 for rotating to control to be connected to the floating support different azimuth of barge 1 is tightened up and loosened, and then realizes the floating support barge 1
Predetermined displacement.The displacement of the floating support barge 1 can also by the following method be controlled：Installed on every floating support barge 1
There is a dynamic positioning system, the displacement control system enters line position by the dynamic positioning system to the corresponding floating support barge
Move control.
In order to avoid the collsion damage produced by hull transverse movement, it is being close in the afterbody of every floating support barge 1
The side that platform is thrown aside at sea is provided with the derivation framework 8 for overboard extending, and the derivation framework 8 is provided with throws aside platform phase with sea
To derivation facade, the derivation facade is gradually distance from sea and throws aside platform from the afterbody of the floating support barge 1.Described in every
Floating support barge 1 is provided with Anti-collision fender I 7 in the side that platform is thrown aside near sea, and anticollision is equipped with the both sides of the jacket 9
Fender II 10, the Anti-collision fender II 10 is relative with the Anti-collision fender I 7.
Although being described to the preferred embodiments of the present invention above in conjunction with accompanying drawing, the invention is not limited in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this area it is common
Technical staff in the case of present inventive concept and scope of the claimed protection is not departed from, may be used also under enlightenment of the invention
To make many forms, these are belonged within protection scope of the present invention.
Claims (8)
1. it is a kind of to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, the sea throw aside platform be by
What jacket and upper chunk were constituted, it is characterised in that the overall pulling down method of the upper chunk is constructed according to following steps：
1) need to complete following work before the overall pulling down for implementing the upper chunk：
1.1) sea is thrown aside platform and has completed to throw aside well head work；
1.2) two bottom sides in the upper chunk are respectively provided with least 2 hemispherical strong points for extending downwardly, the hemisphere
The shape strong point is located at outside the top outline of the jacket；
1.3) two floating support barges are respectively disposed on the sea and throw aside platform both sides, two floating support barges are provided with altogether
Same displacement control system, is provided with the ship for being corresponded with the hemispherical strong point and being coordinated on every floating support barge
Lateral support structure and anchoring system, the shipboard supporting construction are located at the floating support barge near the side of platform, the shipboard
Supporting construction includes support frame, and support frame as described above is affixed with the floating support barge, is provided with support frame as described above and overboard extended
Cantilever, be connected with sleeve on the cantilever, be provided with from bottom to up in the sleeve jack, rigid mount, buffering dress
The supporting construction with the hemispherical strong point is put, the supporting construction of the hemispherical strong point is provided with and is supported with the hemispherical
The tray of point adaptation, the tray forms sphere-contact with the hemispherical strong point, and the coefficient of kinetic friction of the two is less than
0.1；Support mandrel is had in the tray, the support mandrel is fixed on the rigid mount through the buffer unit
On, tray supporting construction is connected with the top of the support mandrel, the outline of the tray supporting construction is tubular structure,
Be embedded with yielding rubber piece in the cylindrical outer wall of the tray supporting construction, the outer surface of the yielding rubber piece with it is described
The inner surface contact of sleeve；
1.4) the front mooring for throwing aside platform at the sea anchors a cargo ship；
1.5) upper chunk is cut with the jacket separates；
2) after sea situation is implemented, start to start the overall pulling down construction of the upper chunk, key step is as follows：
2.1) the top mark height of the floating support barge ballast to the tray thereon is marked in the bottom of the hemispherical strong point
It is high；Two floating support barges are controlled synchronously to throw aside platform near the sea using the displacement control system, until all
The tray and all hemispherical strong points consistency from top to bottom correspondingly；
2.2) the floating support barge unloading draining of synchronous averaging two, and it is described floating using displacement control system control two
The displacement of barge is held in the palm, all trays is coincide with all hemispherical strong points and stress；
2.3) two floating support barges are made to continue synchronous unloading draining, progressively by the weight of the upper chunk from the conduit
Frame is transferred in two shipboard supporting constructions of the floating support barge, makes the bottom of the upper chunk and jacket on vertical
It is kept completely separate；
In weight transfer process, the lifting of the jack is adjusted, make the uniform force of all shipboard supporting constructions；
2.4) when bottom and the jacket of the upper chunk are separated to a design height on vertical, two institutes are stopped
The unloading draining of floating support barge is stated, and two floating support barges are moved forward using the displacement control system, drive towards institute
State cargo ship；
2.5) two floating support barges by the upper chunk on the cargo ship, using the cargo ship will be described on
Destination is arrived in portion's chunk transport.
2. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, the cargo ship uses monomer flat top barge, the support of chunk bottom is set on the deck of the monomer flat top barge
Seat；
The monomer flat top barge is in the step 1.4) in mooring anchoring process be：Stern uses two cables arranged in a crossed manner
Rope is connected with the jacket, and bow is anchored using other two hawsers and fixed；
Implementing the step 2.5) before, the monomer flat top barge draining unloading makes the top of chunk bottom support base
Absolute altitude be less than the step 2.4) described in upper chunk bottom absolute altitude；
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges transport to the monomer flat top barge top upper chunk to, and make on described
The setting supporting construction of portion's chunk and the chunk bottom support base consistency from top to bottom；
2.5.2 monomer flat top barge draining unloading is floated, until the monomer flat top barge by the upper chunk from
Held up on two floating support barges；
2.5.3) two floating support barges sail out of the monomer flat top barge, at the same time, using connector by the top
Chunk is fixed in the monomer flat top barge,
2.5.4 the mooring anchoring of the monomer flat top barge) is released, the monomer flat top barge is dragged to by purpose using tugboat
Ground.
3. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, the cargo ship uses partly latent barge, and a stability column is respectively provided with four corners on the deck of the partly latent barge；
The partly latent barge is in the step 1.4) in state be：The partly latent barge is in bow using two hawsers in front
Anchoring is fixed, and the partly latent barge is in bow using other two hawsers arranged in a crossed manner floating support barge described with respectively
The side connection of platform is thrown aside near sea；
Implementing the step 2.5) before, the partly latent barge is sunk under the water, and make the deck upper table of the partly latent barge
The bottom absolute altitude of the absolute altitude in face floating support barge described less than two；
Implementing the step 2.5) when, using following steps：
2.5.1) two floating support barges carry the upper chunk and sail to the overcentre of the partly latent barge；
2.5.2 the partly latent barge is floated up to towage designed draft depth, now, floated on the deck of the partly latent barge
More than the water surface, carry two of the upper chunk floating support barge loadings on the deck of the partly latent barge；
2.5.3) lower support structure of the upper chunk is installed on the deck of the partly latent barge；
2.5.4 the mooring anchoring of the partly latent barge) is released, the partly latent barge is dragged to by destination using tugboat.
4. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, the buffer unit includes putting off multilayer rubber and multilayer iron plate together from top to bottom, the sheet rubber and
The iron plate is arranged in a crossed manner.
5. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, the displacement control system carries out Bit andits control by the anchoring system to the corresponding floating support barge.
6. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, a dynamic positioning system is installed on every floating support barge, the displacement control system is fixed by the power
Position system carries out Bit andits control to the corresponding floating support barge.
7. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, the afterbody of every floating support barge is provided with the derivation frame for overboard extending in the side that platform is thrown aside near sea
Frame, the derivation framework is provided with throws aside the relative derivation facade of platform with sea, and the derivation facade is from the floating support barge
Afterbody is gradually distance from sea and throws aside platform.
8. according to claim 1 to float the method that platform upper chunk is thrown aside at support overall pulling down sea using double ships, it is special
Levy and be, every floating support barge is provided with Anti-collision fender I in the side that platform is thrown aside near sea, the two of the jacket
Side is equipped with Anti-collision fender II, and the Anti-collision fender II is relative with the Anti-collision fender I.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112918627A (en) * | 2021-02-08 | 2021-06-08 | 中国海洋大学 | Buffer device for dismantling upper module of offshore platform by double-ship method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799519A (en) * | 2019-02-27 | 2019-05-24 | 上海交通大学 | A kind of double ship lifting dismounting offshore platform optics positioning mechanisms |
| CN110155272A (en) * | 2019-05-25 | 2019-08-23 | 招商局重工（江苏）有限公司 | Flexibility for ultra-large type binary semi-submerged platform lifts the method for undocking |
| EP4053012B1 (en) * | 2019-12-30 | 2024-02-21 | Shandong Marine Energy Co., Ltd. | Integrated disassembly system and disassembly method for large offshore structure |
| CN111268059A (en) * | 2020-02-28 | 2020-06-12 | 中远海运特种运输股份有限公司 | Offshore platform dismantling method |
| CN111762281A (en) * | 2020-05-29 | 2020-10-13 | 中远海运特种运输股份有限公司 | Integral dismantling system based on semi-submersible multifunctional transportation dismantling ship and operation method thereof |
| CN114313147A (en) * | 2020-10-10 | 2022-04-12 | 中国石油天然气股份有限公司 | Installation method of offshore platform upper module |
| CN115071908A (en) * | 2021-10-29 | 2022-09-20 | 中国石油工程建设有限公司 | Structure of offshore platform upper module and design method and installation method thereof |
| CN115140255B (en) * | 2022-07-01 | 2023-12-01 | 浙江合兴船业有限公司 | High-efficiency transportation barge for harbour material transfer |
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|---|---|---|---|---|
| FR2734851B1 (en) * | 1995-06-02 | 1999-03-05 | Technip Geoproduction | SELF-LIFTING PLATFORM FOR DRILLING OR OIL EXPLOITATION AT SEA. |
| FR2946003B1 (en) * | 2009-05-26 | 2012-12-14 | Technip France | STRUCTURE FOR TRANSPORTING, INSTALLING AND DISMANTLING A BRIDGE OF A PLATFORM AND METHODS FOR TRANSPORTING, INSTALLING AND DISMANTLING THE BRIDGE |
| CN202152456U (en) * | 2011-07-08 | 2012-02-29 | 胜利油田胜利勘察设计研究院有限公司 | Float-load coupling device of ocean platform upper portion assembling block |
| US8708604B2 (en) * | 2011-09-20 | 2014-04-29 | Technip France | Quick release system for topsides float-over installation on offshore platforms |
| CN102963494B (en) * | 2012-11-01 | 2015-04-29 | 中国海洋石油总公司 | Buoyancy mounting method for blocks |
| CN204185838U (en) * | 2014-10-17 | 2015-03-04 | 博迈科海洋工程股份有限公司 | Buffering shock absorbing device is installed in the floating holder of a kind of ocean platform |
| CN104527940B (en) * | 2014-12-09 | 2017-02-22 | 中国海洋石油总公司 | Ocean platform block offshore double-boat integral migration method |
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| CN112918627A (en) * | 2021-02-08 | 2021-06-08 | 中国海洋大学 | Buffer device for dismantling upper module of offshore platform by double-ship method |
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Address after: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Able (Tianjin) Marine Engineering Technology Co., Ltd. Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street P.O. Box 4705 Chinese CNOOC building Co-patentee before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee before: China National Offshore Oil Corporation Co-patentee before: Able (Tianjin) Marine Engineering Technology Co., Ltd. |