EP2091808B1 - Einrichtung und methode zum transport, montage und demontage der brücke einer off-shore platform - Google Patents

Einrichtung und methode zum transport, montage und demontage der brücke einer off-shore platform Download PDF

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Publication number
EP2091808B1
EP2091808B1 EP07870310.5A EP07870310A EP2091808B1 EP 2091808 B1 EP2091808 B1 EP 2091808B1 EP 07870310 A EP07870310 A EP 07870310A EP 2091808 B1 EP2091808 B1 EP 2091808B1
Authority
EP
European Patent Office
Prior art keywords
deck
legs
shuttles
bridge
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07870310.5A
Other languages
English (en)
French (fr)
Other versions
EP2091808A1 (de
Inventor
Pierre Armand Thomas
Jean-Marc Cholley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technip Energies France SAS
Original Assignee
Technip France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0610235A external-priority patent/FR2908733B1/fr
Priority claimed from FR0758163A external-priority patent/FR2921894B1/fr
Application filed by Technip France SAS filed Critical Technip France SAS
Publication of EP2091808A1 publication Critical patent/EP2091808A1/de
Application granted granted Critical
Publication of EP2091808B1 publication Critical patent/EP2091808B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/06—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for immobilising, e.g. using wedges or clamping rings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions

Definitions

  • the invention relates to a method for transporting, installing and dismantling a bridge of an offshore oil platform.
  • the bridge is supported by a support assembly formed by legs resting on the seabed or by a floating column anchored on the sea floor.
  • One known method is to use barge-mounted lifting cranes to transfer the deck of the transport barge platform onto the support assembly.
  • This method which until now is the most widespread, has limitations. Indeed, the first of these limitations is the capacity of the hoisting cranes which can impose to realize the bridge in several elements which significantly increases the manufacturing cost of this bridge and the cost of the installation and dismantling of said bridge of the oil rig.
  • the second limitation lies in the fact that this method requires to have a relatively large window of time to be able to carry out this operation at sea in good conditions.
  • Another known method is to install the deck of the oil platform in one block on the support assembly by floating it. Then, the bridge is disposed on this support assembly either by a ballast system or by a mechanical system.
  • ballasting or deballasting systems depend on sea conditions, which makes it is difficult to use them in areas where windows of favorable weather are relatively short.
  • a structure for transporting, installing and dismantling a bridge of a fixed oil platform which comprises a U-shaped floating hull equipped with at least three lifting legs of this hull and adapted to take support on the seabed and a shuttle movable along said legs by the hull and intended to be applied on the underside of a deck of an oil platform.
  • the legs are lowered to bear on the seabed and the deck is raised via the shuttle which is itself raised by the hull.
  • the invention aims to avoid these disadvantages by providing a structure that allows the transport, installation or dismantling of a fixed or floating oil platform, both in shallow water in deep water.
  • the invention applies to any type of fixed or floating oil platform in shallow water or in deep water.
  • FIG. 1 there is schematically a floating oil platform generally designated 1 and which comprises, conventionally, a bridge 2 provided with the usual operating equipment and living quarters.
  • This bridge 2 is mounted on a support column 3 forming a float and which is fixed on the seabed, not shown, by anchoring lines 4.
  • the structure 10 comprises a U-shaped floating shell 11 comprising two parallel lateral branches 11a and opposite, interconnected by a central branch 11b.
  • the two lateral branches 11a and the central branch 11b are floating.
  • the hull 11 is equipped with legs 12 movable vertically relative to the hull 11 in buoyancy.
  • the hull 11 is equipped with four legs 12 arranged in pairs on each lateral branch 11a of said hull 11.
  • each leg 12 has, in this embodiment, a triangular section. These legs 12 may also have a square or circular section.
  • Each leg 12 is formed, in a conventional manner, of three members 14 interconnected by a lattice of metal beams 15 ( Fig. 6 ) and is associated with mechanical displacement means designated by the general reference 20 ( Figs. 2 , 3 and 5 ) for each leg 12.
  • the mechanical displacement means 20 are housed in a supporting frame 16 ( Fig. 5 ), also called by the "jack-house” specialists, who is supported by the hull 11.
  • the mechanical means of displacement 20 of each leg 12 comprise, on the one hand, two opposite plates 21 each carried by a rib 14 of the corresponding leg 12 and each having, on each lateral face, a series of teeth 22 forming on the two members 14, a double rack.
  • the mechanical displacement means 20 also comprise several sets 25 distributed on either side of each plate 21, according to the height thereof.
  • Each set 25 comprises a geared motor unit 26 for driving a pinion 27 which meshes with a series of teeth 22 of the corresponding plate 21.
  • the two series of teeth 22 of each plate 21 are associated with six pinions 27 each driven in rotation by a geared motor unit 26.
  • the structure 10 also comprises, associated with each of the legs 12, a shuttle designated by the general reference 30 which is movable by the corresponding leg 12 between a low positon resting on the hull 11 in buoyancy, as shown in FIG. Fig. 2 and a high position, as well as represented at Fig. 3 .
  • the shuttles 30 associated with the legs 12 are moved simultaneously by the legs 12.
  • each shuttle 30 is formed by a body 31 having a vertical leg 32 extending substantially parallel to the ribs 14 of the leg 12 corresponding.
  • vertical branch 32 is formed of two vertical and parallel beams 32a.
  • the branch 32 is provided, on the one hand, at its upper part, with a plate 33 extending substantially perpendicular to said branch 32 and, on the other hand, at its lower part, with a horizontal support sole plate 35 Bridge 2 of the platform 1, as will be seen later.
  • the plate 33 has an opening 34 having a section of complementary shape to the cross section of the corresponding leg 12 and, in this case, a triangular section.
  • the plate 33 is connected to the sole 35 by stiffening beams 36.
  • Each shuttle 30 is provided with locking means 40 on the corresponding leg 12.
  • These locking means 40 shown in greater detail on the Fig. 7 are formed by at least one counter-rack 41 and, preferably, by at least one counter-rack 41 for each plate 21.
  • the counter-rack 41 is displaceable by at least one actuating member 42 and, preferably, by two actuating members 42 constituted for example by hydraulic or pneumatic cylinders to move the counter-rack 41 between a retracted position and a locking position engaged on one of the series of teeth 22 of the leg 12 corresponding.
  • the assembly consisting of the counter-rack 41 and the actuating members 42 is carried by the plate 33 of each shuttle 30.
  • the shell 11 comprises, at each leg 12, means 50 for guiding the corresponding shuttle 30 between the positions, respectively low ( Fig.2 ) and high ( Fig. 3 ).
  • the means 50 for guiding the shuttle 30 of each leg 12 comprise two vertical columns 51 extending substantially parallel to the corresponding leg 12.
  • Each Column 51 cooperates with a passage 52 formed in the sole plate 35 of the shuttle 12 and each of these passages 52 has a section of shape conjugate to the section of the corresponding column 51.
  • the two columns 51 are interconnected by a connecting plate 53 extending substantially perpendicular to said columns 51 and which comprises a central passage 54 ( Fig. 3 ) having a section of complementary shape to the cross section of the corresponding leg 12 and, in this case, a triangular section.
  • the connecting plate 53 forms a guide for the corresponding leg 12.
  • the length of the central branch 11b of the shell 11 is adjustable as a function of the width of the bridge 2 of the oil platform 1.
  • this central branch 11b can be composed of two sections between which can be mounted one or more intermediate sections 11c to change the length of this central branch 11b.
  • the structure 10 is floated near the operating site with the legs 12 raised to not slow its movement.
  • a floating transport element such as a barge 5 brings the bridge 2 of the platform 1 near the floating structure 10.
  • the barge 5 is placed between the two lateral branches 11a of the shell 11, the legs 12 of this shell 11 being in an intermediate position or in a fully raised position.
  • each shuttle 30 is locked on the corresponding leg 12 according to the lifting height, but preferably on the upper end of said leg.
  • the locking of the shuttles 30 on the legs 12 is achieved by actuating the cylinders 42 so that the counter-racks 41 engage with the teeth 22 adjacent.
  • the bridge 2 is placed on the soles 35 of the shuttles 30 by ballasting the barge 5 and this barge 5 is then evacuated.
  • the shuttles 30 are locked on the legs 12 and the legs 12 are raised to lift the deck 2 of the barge 5.
  • the bridge 2 is raised via shuttles 30 and legs 12, the shell 11 of the structure 10 remaining buoyant.
  • the geared motor units 26 are actuated to drive the pinions 27 which mesh the series of teeth 22 of the plates 21 of each leg 12 in order to move by means of the legs 12, the shuttles 30 in the raised position of the bridge 2 , as shown in Fig. 8C .
  • each shuttle 30 is guided by the columns 51 which slide in the passages 52. These columns 51 also make it possible to maintain the soles 35 in a substantially horizontal position and avoid that the shuttles 30 fall under the weight of the bridge 2.
  • the structure 10 supporting the bridge 2 is moved to bring the bridge 2 above its support constituted by the support column 3.
  • the shuttles 30 are lowered through the legs 12 to put the bridge 2 on the support column 3, as shown in FIG. Fig. 8D .
  • the geared motor units 26 are actuated in opposite directions in order to drive the gears 27 in rotation and to lower the legs 12.
  • this support column 3 gradually sinks into the water due to the weight of the bridge 2.
  • the legs 12 and the shuttles 30 continue to descend so that the weight of the bridge 2 is fully recovered by the support column 3.
  • This structure 10 is then removed from the operating site.
  • the dismantling and transport of the bridge 2 from the operating site to the transport element constituted by the barge 5 are carried out by performing the reverse operations which are briefly mentioned below.
  • the hull 11 of the floating structure 10 is brought to the operating site and the legs 12 of the hull 11 are lowered.
  • the shuttles 30 are locked on the legs 12 and the hull 11 is moved to bring the support column 3 between the lateral branches 11a of the hull 11 and to place the shuttles 30 below the deck 2.
  • the shuttles 30 are lifted via the legs 12 by means of the displacement mechanisms 20.
  • the flanges 35 come into contact with the deck 2 and this deck 2 is raised, then the floating structure 10 supporting the deck 2 is moved in order to remove the bridge 2 from the support column 3.
  • the barge 5 is brought between the lateral branches 11a of the hull 11 and is placed below the bridge 2.
  • the shuttles 30 through the legs 12 are lowered to put the bridge 2 on the barge 5 and legs 12 and shuttles 30 are lowered to release the bridge 2 of the structure 10, this bridge 2 now resting on the barge 5.
  • the lower ends of the two adjoining legs 12, ie carried by the same lateral branch 11a of the shell 11, comprise a stabilizer 60 connecting the two lower extremities together.
  • FIG. 10 to 11 there is shown another variant of the structure 10 respectively showing the Fig. 10 the rear part of structure 10 and to Figs. 11 and 12 the front portion of said structure 10 through which is introduced the support column 3 of the bridge 2, as will be seen later.
  • the structure 10 is formed by a floating shell 71 which also has the general shape of a U and which has two lateral branches 71a and a central branch 71b connecting the two lateral branches 71a.
  • the two lateral branches 71a are formed by two floats 72a extending parallel to each other and leaving between them a free space and the central branch 71b is formed by a transverse beam 72b carried by said lateral branches 71a as shown in Fig.10 .
  • the transverse beam 72b is constituted by a grid of tubes 75 interconnected by longitudinal elements 76.
  • the lateral branches 71a of the structure 10 are displaceable by sliding relative to each other on the transverse beam 72b so as to adjust their spacing as a function of the width of the bridge 2.
  • each float 72a each forming a lateral branch 71a has means 73 for moving the transverse beam 72b formed for example by an assembly comprising for example guide rails and a rack-and-pinion system, not shown and of a known type. .
  • each float 72a constituting the lateral branches 71a is equipped with locking means, not shown, on the transverse beam 72b so as to maintain the spacing between these lateral branches 71a constant and determined.
  • the shell 71 comprises, at its open portion, that is to say opposite the central branch 71b, a door generally designated by the general reference 80.
  • This door 80 is formed of two beam sections 81 opposite and movable by sliding each on a float 72a.
  • the two beam sections 81 are movable between a closed position of the entrance of the structure 10, as shown in FIG. Fig. 11 in which they are brought together and in contact with each other and a separated position, as shown in FIG. Fig. 12 in which they release the input of the structure 10 for the positioning of the support column 3 below the bridge 2.
  • each float 72a each constituting a lateral branch 71a of the shell 71 comprises means 82 for moving each beam section 81.
  • These means 82 consist for example of a set comprising guide rails and a rack-and-pinion system. or by any other means of known type.
  • each float 72a also comprises locking means, not shown, of the beam section 81 corresponding in the closed position or in the open position.
  • the shell 71 is also equipped with legs 12 movable vertically relative to said hull 71 in buoyancy by means of displacement mechanisms and, associated with each of said legs, a shuttle 30 intended to be applied on the lower face of the bridge 2 and movable by the corresponding leg 12 between a low position on the hull 71 in buoyancy and a high lifting position of the bridge 2 of the platform 1, each shuttle 30 being provided with locking means on the corresponding leg 12.
  • the rigidity of the shell 11 is obtained by the transverse beam 72b constituting the central branch 71b of the shell 71 and also by the door 80, in the closed position.
  • the two lateral branches 71 formed by the two floats 72a can be detached from the central branch 71b thus reducing the space required for the storage of these branches.
  • the structure according to the invention has the advantage of being able to transport, install and dismantle a deck of an oil platform in shallow water or in deep water, without any modification and in complete safety.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Jib Cranes (AREA)
  • Bridges Or Land Bridges (AREA)
  • Ship Loading And Unloading (AREA)
  • Earth Drilling (AREA)
  • Agricultural Machines (AREA)

Claims (4)

  1. Verfahren für den Transport und das Aufstellen einer Brücke (2) einer Ölplattform (1) an einem Betriebsstandort, dadurch gekennzeichnet, dass es aus den folgenden Schritten besteht:
    - Heranführen der Brücke (2) der Plattform (1) mit einem schwimmenden Transportelement (5) in die Nähe einer schwimmenden Struktur (10), die einen U-förmigen Rumpf (11; 71) mit zwei im Verhältnis zum schwimmenden Rumpf (11; 71) vertikal verlagerbaren Beinen (12) und einen mit jedem der Beine (12) verbundenen und durch das entsprechende Bein (12) verlagerbaren Rohrfänger (30) aufweist,
    - Heranführen der schwimmenden Struktur (10) unter die Brücke (2),
    - Absenken der Beine (12),
    - Verriegeln jedes Rohrfängers (30) auf dem entsprechenden Bein (12),
    - Absetzen der Brücke (2) auf den Rohrfängern (30) und Entfernen des Transportelements (5),
    - Anheben der Brücke (2) mittels der Rohrfänger (30) und der Beine (12), wobei der Rumpf (11; 71) weiterhin schwimmt,
    - Verlagern der die Brücke (2) tragenden Struktur (10), um diese Brücke (2) über ihren Sockel (3) zu führen,
    - Absenken der Rohrfänger (30) anhand der Beine (12), um die Brücke (2) auf ihren Sockel (3) zu stellen,
    - Absenken der Beine (12) und der Rohrfänger (30), um die Brücke der Struktur (10) freizugeben, und
    - Entfernen der Struktur (10) vom Betriebsstandort.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Brücke (2) auf den Rohrfängern (30) abgesetzt wird, wobei das Transportelement (5) mit Ballast ausgeglichen wird.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Brücke (2) auf den Rohrfängern (30) abgesetzt wird, wobei die Beine (12) und die Rohrfänger (30) angehoben werden.
  4. Verfahren für die Demontage und den Transport einer Brücke (2) einer Ölplattform (10) von einem Betriebsstandort bis zu einem Transportelement (5) durch Schwimmen, dadurch gekennzeichnet, dass es aus den folgenden Schritten besteht:
    - Heranführen einer schwimmenden Struktur (10), die einen U-förmigen Rumpf (11; 71) mit im Verhältnis zum schwimmenden Rumpf (11; 71) vertikal verlagerbaren Beinen (12) und einen jedem der Beine (12) zugeordneten und durch das entsprechende Bein (12) verlagerbaren Rohrfänger (30) aufweist, an den Betriebsstandort,
    - Absenken der Beine (12),
    - Verriegeln jedes Rohrfängers (30) auf dem entsprechenden Bein (12),
    - Heben der Brücke (2) von ihrem Sockel (3) mittels der Rohrfänger (30) und der Beine (12), wobei der Rumpf (11; 71) weiterhin schwimmt,
    - Verlagern der die Brücke (2) tragenden Struktur (10), um diese Brücke (2) von ihrem Sockel (3) zu entfernen,
    - Heranführen des Transportelements (5) in die Struktur (10) und unter die Brücke (2),
    - Absenken der Rohrfänger (30) anhand der Beine (12), um die Brücke (2) auf dem Transportelement (5) abzustellen,
    - Absenken der Beine (12), um die Rohrfänger (30) heranzuführen, um die Brücke (2) der Struktur (10) freizugeben, und
    - Entfernen der Brücke (2) von der Struktur (10) durch das Transportelement (5).
EP07870310.5A 2006-11-22 2007-11-20 Einrichtung und methode zum transport, montage und demontage der brücke einer off-shore platform Not-in-force EP2091808B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0610235A FR2908733B1 (fr) 2006-11-22 2006-11-22 Structure de transport, d'installation et de demantelement d'un pont d'une plate-forme petroliere et procedes de mise en oeuvre d'une telle structure.
FR0758163A FR2921894B1 (fr) 2007-10-09 2007-10-09 Structure de transport, d'installation et de demantelement d'un pont d'une plate-forme petroliere et procedes de mise en oeuvre d'une telle structure
PCT/FR2007/001904 WO2008071861A1 (fr) 2006-11-22 2007-11-20 Structure de transport, d'installation et de demantelement d'un pont d'une plate-forme petroliere et procedes de mise en oeuvre d'une telle structure

Publications (2)

Publication Number Publication Date
EP2091808A1 EP2091808A1 (de) 2009-08-26
EP2091808B1 true EP2091808B1 (de) 2013-10-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07870310.5A Not-in-force EP2091808B1 (de) 2006-11-22 2007-11-20 Einrichtung und methode zum transport, montage und demontage der brücke einer off-shore platform

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Country Link
US (1) US8517637B2 (de)
EP (1) EP2091808B1 (de)
KR (1) KR101436430B1 (de)
AU (1) AU2007331430B2 (de)
BR (1) BRPI0718975A2 (de)
MX (1) MX2009005403A (de)
MY (1) MY151678A (de)
NO (1) NO20092042L (de)
RU (1) RU2433061C2 (de)
WO (1) WO2008071861A1 (de)

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US8708604B2 (en) * 2011-09-20 2014-04-29 Technip France Quick release system for topsides float-over installation on offshore platforms
KR101290804B1 (ko) * 2011-11-09 2013-07-30 삼성중공업 주식회사 반잠수식 시추선
ITMI20112130A1 (it) * 2011-11-23 2013-05-24 Saipem Spa Sistema e metodo per eseguire un programma di perforazione di pozzi subacquei in un letto di un corpo d'acqua e unita' galleggiante ausiliaria
KR101422226B1 (ko) * 2012-07-06 2014-07-22 삼성중공업 주식회사 부유식 구조물
SG2012086674A (en) * 2012-11-23 2014-06-27 Keppel Offshore & Marine Technology Ct Pte Ltd Structure-supported jackup system
CN104002931B (zh) * 2014-05-08 2016-06-29 天津大学 U型海洋工程安装船及导管架上部模块安装方法
CN107150765A (zh) * 2016-03-03 2017-09-12 天津市海王星海上工程技术股份有限公司 一种吊挂式潜水驳及其使用方法
RU2719053C1 (ru) * 2019-09-26 2020-04-17 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" (ФГУП Крыловский государственный научный центр") Устройство транспортировки добычного модуля и установки его на плаву на стационарное морское опорное основание одноколонного типа

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Also Published As

Publication number Publication date
RU2433061C2 (ru) 2011-11-10
US20090324342A1 (en) 2009-12-31
KR101436430B1 (ko) 2014-09-01
WO2008071861A1 (fr) 2008-06-19
AU2007331430A1 (en) 2008-06-19
BRPI0718975A2 (pt) 2014-02-04
AU2007331430B2 (en) 2013-07-25
KR20090101891A (ko) 2009-09-29
NO20092042L (no) 2009-08-06
RU2009123516A (ru) 2010-12-27
MY151678A (en) 2014-06-30
US8517637B2 (en) 2013-08-27
EP2091808A1 (de) 2009-08-26
MX2009005403A (es) 2009-06-01

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