CN105151239A - Shipboard supporting structure used for integrally dismounting offshore platform topside module by means of two boat flotage - Google Patents
Shipboard supporting structure used for integrally dismounting offshore platform topside module by means of two boat flotage Download PDFInfo
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- CN105151239A CN105151239A CN201510257631.6A CN201510257631A CN105151239A CN 105151239 A CN105151239 A CN 105151239A CN 201510257631 A CN201510257631 A CN 201510257631A CN 105151239 A CN105151239 A CN 105151239A
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Abstract
The invention discloses a shipboard supporting structure used for integrally dismounting offshore platform topside module by means of two boat flotage. The shipboard supporting structure comprises a bracing frame, the bracing frame is fixedly connected with a floating barge, the bracing frame is provided with a cantilever which extends outwards, the cantilever is fixedly connected with a sleeve, the interior of the sleeve is provided with a jack, a rigid bearer, a buffer unit and a supporting structure from bottom to top, the supporting structure is provided with a holding bowl matched with a semispherical supporting point, the holding bowl makes spherical surface contact with the semispherical supporting point, and the dynamic friction coefficient of the holding bowl and the semispherical supporting point is smaller than 0.1; a supporting central spindle is arranged under the holding bowl, the supporting central spindle traverses the buffer unit and is fixed on the rigid bearer, the upper part of the supporting central spindle is fixedly connected with a holding bowl supporting structure, the outer contour of the holding bowl supporting structure is cylindrical, a buffer rubber sheet is embedded into the cylindrical outer wall of the holding bowl supporting structure, and the outside surface of the buffer rubber sheet is contacted with the inside surface of the sleeve. The shipboard supporting structure only transmits vertical gravity and basically does not transmit bending moment caused by self-rolling of the boat.
Description
Technical field
The invention belongs to field of ocean engineering, particularly a kind of shipboard supporting construction of floating holder overall pulling down upper part block of offshore platform for two ship.
Background technology
According to international convention and domestic relevant laws and regulations, the oil-gas field latter 1 year inner platform that stops production must be removed, and having at least tens seas to throw aside platform thus in Bohai Sea Gulf Future Ten year will be removed.The design life of general offshore platform was at about 20 years.To the year two thousand twenty, except some are by transforming except the platform of lengthening the life, the most of platform built in the past for 2002 all will enter the stage of throwing aside.
The dismounting of platform of throwing aside mainly is contemplated that upper group block structured is removed and the dismounting of jacket.Upper group block structured is removed and overall pulling down and blocked breaking can be divided into except two kinds of methods.According to the method that blocked breaking removes, then must implement structure cuts on platform, time-consuming, and cause the danger of Marine Environmental Pollution larger.For the method for topside overall pulling down, orthodox method, after the whole topside of platform being separated with jacket, is directly lifted on barge.The method work capacity is minimum, but needs to use the large-scale crane ship with enough load-carrying abilitys and somewhat expensive.Owing to cannot make precise evaluation to the weight of chunk and center of gravity when removing, the risk of integral lifting is larger.
Summary of the invention
The present invention provides a kind of shipboard supporting construction of floating holder overall pulling down upper part block of offshore platform for two ship for solving in known technology the technical matters that exists, adopt two of this structure floating holder barges the floating holder of whole topside entirety of the platform cut off with jacket can be got off, and then avoid the large-scale crane ship using day hire charge costliness, thus significantly can reduce expense.
The technical scheme that the present invention takes for the technical matters existed in solution known technology is: a kind of shipboard supporting construction of floating holder overall pulling down upper part block of offshore platform for two ship, this structure is positioned at floating holder barge near the side of platform, described shipboard supporting construction comprises bracing frame, support frame as described above and described floating holder barge affixed, support frame as described above is provided with the cantilever overboard extended, described cantilever is connected with sleeve, jack is provided with from bottom to up in described sleeve, rigid mount, the supporting construction of shock absorber and the described semisphere strong point, the supporting construction of the described semisphere strong point is provided with the tray with described semisphere strong point adaptation, described tray and the described semisphere strong point form sphere-contact, and the dynamic friction coefficient of the two is less than 0.1, support mandrel is had at described tray, described support mandrel is fixed on described rigid mount through described shock absorber, tray supporting construction is connected with on the top of described support mandrel, the outline of described tray supporting construction is tubular structure, the cylindrical outer wall of described tray supporting construction is embedded with yielding rubber sheet, and the outer surface of described yielding rubber sheet contacts with the inner surface of described sleeve.
The advantage that the present invention has and good effect are: adopt above-mentioned shipboard supporting construction, when utilizing two ships floating holder overall pulling down upper part block of offshore platform, be transferred to the process of two floating holder barges of motion from fixing jacket in the weight of upper chunk, only transmit vertical gravity and substantially do not transmit the moment of flexure caused by ship self rolling, thus protect the member structure of upper chunk, also protect the supporting construction of floating holder barge simultaneously, thus reduce operating risk, two ship is enable to float the method successful implementation of holder overall pulling down upper part block of offshore platform, after by the upper chunk of platform and jacket cutting and separating, two floating holder barges are adopted its entirety to be lifted from the both sides of upper chunk and move apart jacket, complete on-the-spot dismounting, platform upper chunk is thrown aside at the method overall pulling down sea utilizing two ship to float holder, can keep throwing aside the integraty of platform upper chunk, be conducive to chunk renovation and again recycle, can avoid in addition using large-scale floating crane, thus significantly can reduce expense.
Accompanying drawing explanation
Figure 1A is structural representation of the present invention;
Figure 1B is the schematic diagram applying floating holder barge of the present invention;
Fig. 1 C is the elevation drawing of Figure 1B;
The lateral plan of the barge of partly diving that the method that Fig. 1 D throws aside platform upper chunk in holder overall pulling down sea for the above-mentioned shipboard supporting construction of employing utilizes two ship to float adopts;
The birds-eye view of the barge of partly diving that the method that Fig. 1 E throws aside platform upper chunk in holder overall pulling down sea for the above-mentioned shipboard supporting construction of employing utilizes two ship to float adopts;
The lateral plan of the monomer flat top barge that the method that Fig. 1 F throws aside platform upper chunk in holder overall pulling down sea for the above-mentioned shipboard supporting construction of employing utilizes two ship to float adopts;
The birds-eye view of the monomer flat top barge that the method that Fig. 1 G throws aside platform upper chunk in holder overall pulling down sea for the above-mentioned shipboard supporting construction of employing utilizes two ship to float adopts;
Fig. 2 A adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the step 1.3 of method of platform upper chunk) schematic diagram;
Fig. 2 B and Fig. 2 C adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the step 2.1 of method of platform upper chunk) schematic diagram;
Fig. 2 D adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the step 2.3 of method of platform upper chunk) schematic diagram;
Fig. 3 A, Fig. 3 B and Fig. 3 C adopt above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the step 2.4 of method of platform upper chunk) schematic top plan view;
Fig. 4 A and Fig. 4 B adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt monomer flat top barge as step 2.5.1 during carrier) schematic diagram;
Fig. 4 C is the elevation drawing of Fig. 4 B;
Fig. 4 D and Fig. 4 E adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt monomer flat top barge as step 2.5.2 during carrier) schematic diagram;
Fig. 4 F adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt monomer flat top barge as step 2.5.3 during carrier) schematic diagram;
Fig. 4 G adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt monomer flat top barge as step 2.5.4 during carrier) schematic diagram;
Fig. 5 A and Fig. 5 B adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt half to dive barge as step 2.5.1 during carrier) schematic diagram;
Fig. 5 C is the elevation drawing of Fig. 5 B;
Fig. 5 D adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt half to dive barge as step 2.5.2 during carrier) and step 2.5.3) schematic diagram;
Fig. 5 E adopts above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea to throw aside the method for platform upper chunk and adopt half to dive barge as step 2.5.4 during carrier) schematic diagram.
In figure: 1, floating holder barge, 2, bracing frame, 3, sleeve, 4 jacks, 5, twin drum winch, 6, hawser, 7, Anti-collision fender I, 8, derive framework, 9, jacket, 10, Anti-collision fender II, 11, upper chunk, 12, the semisphere strong point, 13, tugboat, 14, towing cable, 15, horizontal surface, 16, half latent barge, 17, tray, 18, stability column, 19, shock absorber, 20, lower support structure, 21, monomer flat top barge, 22, chunk bottom support seat, 23, slideway, 24, attaching parts, 25, rigid mount, 26, support mandrel, 27, tray supporting construction, 28, yielding rubber sheet.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Figure 1A ~ Fig. 1 C, a kind of shipboard supporting construction of floating holder overall pulling down upper part block of offshore platform for two ship, this shipboard supporting construction is positioned at described floating holder barge 1 near the side of platform, described shipboard supporting construction comprises bracing frame 2, support frame as described above 2 is affixed with described floating holder barge 1, support frame as described above 2 is provided with the cantilever overboard extended, described cantilever is connected with sleeve 3, jack 4 is provided with from bottom to up in described sleeve 3, rigid mount 25, the supporting construction of shock absorber 19 and the described semisphere strong point 12, the supporting construction of the described semisphere strong point 12 is provided with the tray 17 with the described semisphere strong point 12 adaptation, described tray 17 forms sphere-contact with the described semisphere strong point 12, and make the dynamic friction coefficient of the two be less than 0.1, support mandrel 26 is had at described tray 17, described support mandrel 26 is fixed on described rigid mount 25 through described shock absorber 19, tray supporting construction 27 is connected with on the top of described support mandrel 26, the outline of described tray supporting construction 27 is tubular structure, the cylindrical outer wall of described tray supporting construction 27 is embedded with yielding rubber sheet 28, and the outer surface of described yielding rubber sheet 28 contacts with the inner surface of described sleeve 3.
In shipboard supporting construction, arrange shock absorber 19 is in order in the process of removing upper chunk 11, reduces impact force when steel contacts with steel; Under the effect of wind, wave, stream, will move along with the motion of ship in the top of shipboard supporting construction, and likely strike the semisphere strong point bottom upper chunk 11, and now in shipboard supporting construction, shock absorber 19 will play the effect of buffering percussive force.Bottom shock absorber 19, settle jack 4 to be liftings in order to shipboard supporting construction can be finely tuned, thus reach the stressed object of each shipboard supporting construction of adjustment.This fine setting mainly in order to tackle the centre-of gravity shift phenomenon being removed upper chunk 11 and may occurring, thus reduces operational risk.
Refer to institute's drawings attached, adopt above-mentioned shipboard supporting construction to utilize two ship to float holder overall pulling down sea and throw aside the method for platform upper chunk, described sea is thrown aside platform and is made up of jacket 9 and upper chunk 11, and the overall pulling down method of described upper chunk 11 is constructed according to following steps:
1) before the overall pulling down implementing described upper chunk 11, following work has been needed:
1.1) described sea is thrown aside platform and has been completed well head work of throwing aside.
1.2) be respectively provided with at least 2 semisphere strong points 12 to downward-extension in the two bottom sides of described upper chunk 11, the described semisphere strong point 12 is positioned at outside the top outline of described jacket 9.
1.3) two floating holder barges 1 are placed in respectively described sea and throw aside platform both sides, two described floating holder barges 1 are provided with a common displacement control system, floating holder barge 1 are provided with the above-mentioned shipboard supporting construction and mooring system that coordinate with the described semisphere strong point 12 one_to_one corresponding every described.
1.4) front mooring anchoring carrier of platform is thrown aside at described sea;
1.5) described upper chunk 11 and described jacket 9 are cut is separated;
2) after implementing sea situation, start the overall pulling down construction starting described upper chunk 11, key step is as follows:
2.1) by described floating holder barge 1 ballast to the described tray 17 on it top mark height in the end absolute altitude of the described semisphere strong point 12; Described displacement control system is utilized to control the synchronous platform of throwing aside near described sea of two described floating holder barges 1, until all described trays 17 and all described semisphere strong points 12 consistency from top to bottom correspondingly.
2.2) the described floating holder barge 1 of synchronous averaging two unloads draining, and utilizes described displacement control system to control the displacement of two described floating holder barges 1, makes all described trays 17 identical and stressed with all described semisphere strong points 12.
2.3) two described floating holder barges 1 are made to continue synchronously to unload draining, progressively the weight of described upper chunk 11 is transferred to the shipboard supporting construction of two described floating holder barges 1 from described jacket 9, the bottom of described upper chunk 11 is separated completely with jacket 9 on vertical.
In weight transfer process, described tray 17 and the described semisphere strong point 12 keep sphere-contact, and contact surface is smooth and have very low friction coefficient.Adjust the lifting of described jack 4, make the uniform force of all described shipboard supporting constructions.
2.4) when the bottom of described upper chunk 11 and jacket 9 are separated to a design height on vertical, stop the unloading draining of two described floating holder barges 1, and utilize described displacement control system that two described floating holder barges 1 are moved forward, drive towards described carrier, described upper chunk 11 departs from jacket 9 in the horizontal direction.
2.5) described upper chunk 11 is contained on described carrier by two described floating holder barges 1, uses described carrier that described upper chunk 11 is transported to destination.
Use described carrier that described upper chunk 11 is transported to destination and have two kinds of methods:
First method: adopt monomer flat top barge 21, the deck of described monomer flat top barge 21 arranges chunk bottom support seat 22.
Described monomer flat top barge 21 is in described step 1.4) in mooring anchor solid method be: stern adopts two hawsers 6 arranged in a crossed manner to be connected with described jacket 9, and it is fixing that bow adopts other two hawsers 6 to anchor.
In the described step 2.5 of enforcement) before, described monomer flat top barge 21 draining unloading, makes the top mark height of described chunk bottom support seat 22 in described step 2.4) described in the end absolute altitude of upper chunk 11.
In the present embodiment, chunk bottom support seat 22 is arranged on slideway 23, and slideway 23 is fixed on the deck of described monomer flat top barge 21.
In the described step 2.5 of enforcement) time, adopt following steps:
2.5.1) described upper chunk 11 transports to above described monomer flat top barge 21 by two described floating holder barges 1, and makes the setting supporting construction of described upper chunk 11 and described chunk bottom support seat 22 consistency from top to bottom.
2.5.2) make described monomer flat top barge 21 draining unload to float, until described upper chunk 11 holds up from two described floating holder barges 1 by described monomer flat top barge 21.
2.5.3) two described floating holder barges 1 sail out of described monomer flat top barge 21, meanwhile, adopt attaching parts 24 described upper chunk 11 to be fixed in described monomer flat top barge 21.
2.5.4) remove the mooring anchoring of described monomer flat top barge 21, adopt tugboat 13 that described monomer flat top barge 21 is dragged to destination.Described tugboat 13 adopts towing cable 14 to be connected with described monomer flat top barge 21.
In above process, the deck of described monomer flat top barge 21 is positioned on horizontal surface 15 all the time.
Second method: adopt half latent barge 16, is respectively provided with a stability column 18 in four bights on the deck of described half latent barge 16.Four stability columns 18 lay respectively at four corners on deck, make half latent barge 16 have broad deck plane, thus can deliver large-sized goods.
Described half dives barge 16 in described step 1.4) in state be: described half barge 16 of diving adopts two hawsers 6 fixing in front anchoring at bow, and described half barge 16 of diving adopts the close sea of other two hawsers 6 arranged in a crossed manner floating holder barge 1 described with respectively to throw aside the side of platform at bow to be connected.
In the described step 2.5 of enforcement) before, described half latent barge 16 is sunk under the water, and makes the end absolute altitude of absolute altitude lower than two described floating holder barges 1 of the deck upper surface of described half latent barge 16.
In the described step 2.5 of enforcement) time, adopt following steps:
2.5.1) two described floating holder barges 1 carry described upper chunk 11 and sail to described half overcentre of diving barge 16;
2.5.2) make described half latent barge 16 float up to the towage designed draft degree of depth, now, keep afloat in the deck of described half latent barge 16 above, two the described floating holder barges 1 carrying described upper chunk 11 are loaded in described half and dive on the deck of barge 16.
2.5.3) lower support structure 20 of described upper chunk is installed on the deck of described half latent barge 16.
2.5.4) remove the mooring anchoring of described half latent barge 16, adopt tugboat 13 that described half latent barge 16 is dragged to destination.Described tugboat 13 and described half latent barge 16 adopt towing cable 14 to be connected.
Above-mentioned dismounting operation needs to wait for that good growing weather window can carry out.
Above-mentioned shock absorber 19 comprises the multilayer rubber and multilayer iron plate that put off from top to bottom together, described sheet rubber and described iron plate arranged in a crossed manner.
Above-mentioned displacement control system carries out Bit andits control by described mooring system to corresponding described floating holder barge 1.In the present embodiment, described mooring system comprises twin drum winch 5 and hawser 6, above-mentioned displacement control system, by controlling the rotation of twin drum winch 5, carrys out the tightening up and loosen of hawser 6 of control linkage in floating holder barge 1 different azimuth, and then realizes the predetermined displacement of described floating holder barge 1.Can also control the displacement of described floating holder barge 1 by the following method: every described, floating holder barge 1 is provided with a dynamic positioning system (DPS), described displacement control system carries out Bit andits control by described dynamic positioning system (DPS) to corresponding described floating holder barge.
In order to avoid the collision damage produced because of hull cross motion, every described, the afterbody of floating holder barge 1 is provided with the derivation framework 8 overboard extended throwing aside the side of platform near sea, described derivation framework 8 is provided with to throw aside the relative derivation facade of platform with sea, described derivation facade throws aside platform away from sea gradually from the afterbody of described floating holder barge 1.Every described floating holder barge 1 is provided with Anti-collision fender I 7 throwing aside the side of platform near sea, and be equipped with Anti-collision fender II 10 in the both sides of described jacket 9, described Anti-collision fender II 10 is relative with described Anti-collision fender I 7.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (1)
1. one kind is floated the shipboard supporting construction of holder overall pulling down upper part block of offshore platform for two ship, this structure is positioned at floating holder barge near the side of platform, described shipboard supporting construction comprises bracing frame, support frame as described above and described floating holder barge affixed, support frame as described above is provided with the cantilever overboard extended, described cantilever is connected with sleeve, jack is provided with from bottom to up in described sleeve, rigid mount, the supporting construction of shock absorber and the described semisphere strong point, the supporting construction of the described semisphere strong point is provided with the tray with described semisphere strong point adaptation, described tray and the described semisphere strong point form sphere-contact, and the dynamic friction coefficient of the two is less than 0.1, support mandrel is had at described tray, described support mandrel is fixed on described rigid mount through described shock absorber, tray supporting construction is connected with on the top of described support mandrel, the outline of described tray supporting construction is tubular structure, the cylindrical outer wall of described tray supporting construction is embedded with yielding rubber sheet, and the outer surface of described yielding rubber sheet contacts with the inner surface of described sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257631.6A CN105151239A (en) | 2015-05-19 | 2015-05-19 | Shipboard supporting structure used for integrally dismounting offshore platform topside module by means of two boat flotage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257631.6A CN105151239A (en) | 2015-05-19 | 2015-05-19 | Shipboard supporting structure used for integrally dismounting offshore platform topside module by means of two boat flotage |
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| CN105151239A true CN105151239A (en) | 2015-12-16 |
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| CN106985969A (en) * | 2016-01-21 | 2017-07-28 | 中国国际海运集装箱(集团)股份有限公司 | A kind of positioner and its localization method |
| CN112693574A (en) * | 2021-01-21 | 2021-04-23 | 上海交通大学 | Deck butt joint unit buffer based on non-Newtonian fluid |
| CN112896454A (en) * | 2021-01-20 | 2021-06-04 | 上海交通大学 | Upper layer module jacking device suitable for detachable platform |
| 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 |
| WO2021135903A1 (en) * | 2019-12-30 | 2021-07-08 | 山东海洋能源有限公司 | Integrated disassembly system and disassembly method for large offshore structure |
| CN114750893A (en) * | 2021-04-02 | 2022-07-15 | 中国海洋大学 | Deck support combination device for floating and supporting installation of ocean engineering upper module |
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Application publication date: 20151216 |