EP0863260A1 - Procédé d'assemblage de tronçons de jambes de support d'une plate-forme pétrolière - Google Patents
Procédé d'assemblage de tronçons de jambes de support d'une plate-forme pétrolière Download PDFInfo
- Publication number
- EP0863260A1 EP0863260A1 EP98400103A EP98400103A EP0863260A1 EP 0863260 A1 EP0863260 A1 EP 0863260A1 EP 98400103 A EP98400103 A EP 98400103A EP 98400103 A EP98400103 A EP 98400103A EP 0863260 A1 EP0863260 A1 EP 0863260A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- sections
- leg
- opening
- legs
- 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.)
- Granted
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Classifications
-
- 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
-
- 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
-
- 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
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
-
- 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
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
Definitions
- the subject of the present invention is a method of assembling sections of support legs of an offshore oil rig.
- Oil exploitation platforms at sea usually have legs, for example three in number, resting on the seabed and a hull mounted movable and adjustable in height the long legs and wearing particular equipment operating and living quarters.
- the entire platform After its construction, the entire platform is brought in floatation to the city of drilling or operating, and the legs went down in contact with a supporting structure or the seabed, then by resting on the legs, the shell is hoisted above sea level to a altitude which puts it out of the reach of the highest waves.
- the shell can therefore be moved along the shell-carrying legs by means of mechanisms of training housed in a load-bearing framework supported by the hull and well known to specialists under the name of "jack-house”.
- each load-bearing leg each have at least two opposite geared motor assemblies causing output pinions which cooperate with racks opposite and mounted on the legs.
- each leg crosses the hull and the corresponding supporting framework and is formed by sections superimposed and joined together by welding.
- Each section can have a height of the order of eighteen meters and is generally consisting of vertical members, the number of three or four, linked together by a trellis of steel beams or by boxes.
- each member is formed on the one hand, by a rectangular plate and, on the other part, by half-shell stiffeners each welded on one of the main faces of said plate.
- the rectangular plates feature on their side teeth which form the diametrically opposite racks, intended for cooperate with the output gears of the mechanisms training.
- the shell rests on the construction site floor by means of support members appropriate.
- the first method consists, for each leg, to be lifted by a large lifting device height, a first section, to bring it in line with the corresponding passage in the hull and the load-bearing framework, then lower it gradually to engage it vertically in this passage.
- the second method is to assemble the different components of the hull at a height large enough to spare with the soil of the site a space allowing the passage of sections vertical below said hull.
- each leg is brought vertically below the shell, then lift to position it in the passage in the hull and supporting structure of drive mechanisms.
- the object of the invention is to avoid these disadvantages by proposing a process which makes it possible to simplify assembly and assembly operations legs of an oil rig and by therefore to reduce manufacturing costs.
- Fig. 1 there is shown schematically a self-elevating oil platform comprising a shell 1 provided with operating equipment and living quarters usual.
- This shell 1 is mounted displaceable on vertical legs 2 intended to rest on the seabed 3 when the platform is in position drilling or exploitation.
- Each leg 2 ends at its part lower by a leg 4, intended to rest on the seabed 3.
- each of these legs 2 has, in this embodiment, a triangular section.
- These legs 2 can also have a square or circular section.
- each leg 2 is formed by several sections 20, for example of a height of the order of eighteen meters and which are superimposed and joined together by welding for form said leg 2.
- Each leg 2 has a height of around 70 to 170 meters.
- each section 20 of the legs 2 is formed of three members 21 connected together by a lattice of metal beams 22 or by boxes.
- the members 21 of the sections 20 comprise teeth to form on each frame 21, two racks 23 diametrically opposite and intended for cooperate with drive mechanisms 30 to move the shell 1 on the vertical legs 2.
- the drive mechanisms 30 are housed in a load-bearing framework 10 also called by jack-house specialists.
- Each supporting frame 10 is supported by the shell 1, as shown in Fig.1.
- the drive mechanisms 30 are formed by geared motor assemblies 31 each an output pinion 32 cooperating with the racks 23 arranged on the members 21 of each vertical leg 2.
- each leg 2 crosses the hull 1 and the corresponding supporting frame 10 by a vertical passage 5.
- the drive mechanisms 30 allow lower legs 2 until contact with the bottom sailor 3, then taking support on these legs 2 of hoist hull 1 above the sea, up to a altitude which puts it out of reach of the highest waves (Fig. 1).
- the construction of the platform is performed as follows.
- the different elements component hull 1 are assembled in a building site and this shell 1 rests on supports 6 at a low distance from the ground, as shown in Figs. 7A to 7c.
- each load-bearing framework 10 is equipped, at the passage of each member 21 of the sections 20 of the legs 2, a guide 12 of complementary shape to a portion circular of the corresponding member 21 and intended guiding the sections 20 during their vertical translation, as we will see later.
- the height of the lateral opening 11 and the distance between the lower part of the shell 1 with the ground form a space high enough to allow passage of a section 20.
- the means for lifting the first section 20 can be constituted for example by a crane or cylinders.
- This first section 20 is then lifted by motor-reducer 31 and pinion assemblies outputs 32 so as to position the lower part of said first section 20 above the opening side 11, as shown in FIG. 7B.
- the lateral opening 11 thus being released, one engages in this lateral opening 11 a second section 20 and it is positioned in the axis of the first section 20 previously raised.
- these sections 20 are assembled by welding and are raised by means of said assemblies geared motors 31 and output pinions 32 to release the lateral opening 11 in order to allow the positioning of another section 20.
- the method according to the invention therefore makes it possible to simplify assembly and assembly operations legs of an oil rig and by therefore to reduce manufacturing costs.
- the method according to the invention makes it possible to reduce handling operations and avoid that the different operations of assembling the sections legs are dependent on the weather.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
- Foundations (AREA)
- Earth Drilling (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Revetment (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Description
- à ménager au niveau du passage de chaque jambe une ouverture latérale dans la coque et dans la partie inférieure de l'ossature porteuse,
- à engager dans chaque ouverture latérale un premier tronçon et à le positionner dans l'axe du passage de la jambe,
- à soulever le premier tronçon de chaque jambe afin de positionner la partie supérieure de ce tronçon au-dessus de l'ouverture,
- à positionner sur les crémaillères du premier tronçon les ensembles moto-réducteurs et pignons de sortie,
- à soulever le premier tronçon par les ensembles moto-réducteurs et pignons de sortie pour amener la partie inférieure dudit premier tronçon au-dessus de l'ouverture,
- à engager dans l'ouverture un second tronçon et à le positionner dans l'axe du premier tronçon,
- à accoster les tronçons,
- à assembler par soudage lesdits tronçons,
- à soulever ces tronçons au moyen des ensembles moto-réducteurs et pignons de sortie,
- à engager dans l'ouverture et à assembler successivement les tronçons pour former chaque jambe,
- et à refermer les ouvertures latérales pratiquées dans la coque.
- la Fig. 1 est une vue schématique en élévation d'une plate-forme pétrolière auto-élévatrice,
- la Fig. 2 est une vue schématique à plus grande échelle et partiellement écorchée de l'une des jambes de la plate-forme montrant une partie des mécanismes d'entraínement de la coque de cette plate-forme,
- la Fig. 3 est une vue en coupe selon la ligne 3-3 de la Fig. 1,
- la Fig. 4 est une vue de côté d'une partie de la plate-forme montrant l'ouverture latérale ménagée dans cette plate-forme pour la mise en oeuvre du procédé conforme à l'invention,
- la Fig. 5 est une vue schématique de dessus de la plate-forme,
- la Fig. 6 est une vue en coupe selon la ligne 6-6 de la Fig. 4,
- les Figs. 7A à 7C sont des vues schématiques en élévation de la plate-forme montrant les différentes étapes de mise en oeuvre du procédé conforme à l'invention.
Claims (2)
- Procédé d'assemblage de tronçons de jambes de support d'une plate-forme d'exploitation pétrolière en mer, du type comprenant une coque (1) montée déplaçable sur des jambes porteuses (2) au moyen de mécanismes d'entraínement (30) logés dans une ossature porteuse (10) supportée par la coque (1) et comportant chacun au moins deux ensembles moto-réducteurs (31) opposés entraínant des pignons de sortie (32) coopérant avec des crémaillères (23) opposées et montées sur les jambes (2), chacune desdites jambe- (2) traversant la coque (1) et l'ossature porteuse (10) correspondante et étant formée par des tronçons (20) superposés et assemblés entre eux par soudage, caractérisé en ce que le procédé consiste:à ménager au niveau du passage de chaque jambe (2) une ouverture latérale (11) dans la coque (1) et dans la partie inférieure de l'ossature porteuse (10),à engager dans chaque ouverture latérale (11) un premier tronçon (20) et à le positionner dans l'axe du passage (5) de la jambe (2),à soulever le premier tronçon (20) de chaque jambe (2) afin de positionner la partie supérieure de ce tronçon (20) au-dessus de l'ouverture (11),à positionner sur les crémaillères (23) du premier tronçon (20) les ensembles moto-réducteurs (31) et pignons de sortie (32),à soulever le premier tronçon (20) par les ensembles moto-réducteurs (31) et pignons de sortie (32) pour amener la partie inférieure dudit premier tronçon (20) au-dessus de l'ouverture (11),à engager dans l'ouverture (11) un second tronçon (20) et à le positionner dans l'axe du premier tronçon (20),à accoster les tronçons (20),à assembler par soudage lesdits tronçons (20),à soulever ces tronçons (20) au moyen des ensembles moto-réducteurs (31) et des pignons de sortie (32),à engager dans l'ouverture (11) et à assembler successivement les tronçons (20) pour former chaque jambe (2),et à refermer les ouvertures latérales (11) pratiquées dans la coque (1).
- Procédé selon la revendication 1, caractérisé en ce qu'au cours du levage des tronçons (20) des jambes (2), ces tronçons (20) sont guidés latéralement à l'intérieur de chaque ossature porteuse (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9702763A FR2760474B1 (fr) | 1997-03-07 | 1997-03-07 | Procede d'assemblage de troncons de jambes de support d'une plate-forme petroliere |
FR9702763 | 1997-03-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0863260A1 true EP0863260A1 (fr) | 1998-09-09 |
EP0863260B1 EP0863260B1 (fr) | 2003-04-02 |
Family
ID=9504532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400103A Expired - Lifetime EP0863260B1 (fr) | 1997-03-07 | 1998-01-20 | Procédé d'assemblage de tronçons de jambes de support d'une plate-forme pétrolière |
Country Status (8)
Country | Link |
---|---|
US (1) | US5954453A (fr) |
EP (1) | EP0863260B1 (fr) |
DE (1) | DE69812754T2 (fr) |
EA (1) | EA000553B1 (fr) |
ES (1) | ES2195285T3 (fr) |
FR (1) | FR2760474B1 (fr) |
MY (1) | MY119478A (fr) |
NO (1) | NO316125B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109648269A (zh) * | 2019-01-02 | 2019-04-19 | 南通蓝岛海洋工程有限公司 | 一种海洋生活平台的提升腿桩建造工艺 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5782733A (en) * | 1992-10-26 | 1998-07-21 | Innoflex Incorporated | Zippered film and bag |
AU2012262632B2 (en) * | 2011-06-02 | 2016-07-28 | National Oilwell Varco, L.P. | Drilling rig system with self-elevating drill floor |
DE102012016915B4 (de) * | 2012-08-22 | 2017-10-19 | Salzgitter Mannesmann Line Pipe Gmbh | Tragstruktur eines Offshore-Bauwerks, insbesondere einer Windenergieanlage, Verwendung einer derartigen Tragstruktur, sowie Verfahren zu deren Herstellung |
US9670038B2 (en) | 2013-05-10 | 2017-06-06 | Devin International, Inc. | Drilling rig transfer system and method |
WO2016008031A1 (fr) | 2014-07-14 | 2016-01-21 | Dreco Energy Services Ulc | Installation de forage mobile |
US9988807B2 (en) | 2016-02-24 | 2018-06-05 | National Oilwell Varco, L.P. | Drilling rig with self-elevating drill floor |
US10822924B2 (en) | 2016-03-07 | 2020-11-03 | National Oilwell Varco, L.P. | Multi-well bop cellar trailer |
US9970211B2 (en) | 2016-05-02 | 2018-05-15 | Dreco Energy Services Ulc | Guide rails for mobile drilling rig |
US10293854B2 (en) | 2016-10-05 | 2019-05-21 | Dreco Energy Services Ulc | Movable rig and steering system |
US11454067B2 (en) | 2018-08-06 | 2022-09-27 | Nov Canada Ulc | Drill floor support structures |
US11603723B2 (en) | 2019-08-30 | 2023-03-14 | Nov Canada Ulc | Cuttings processing unit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4266887A (en) * | 1977-06-10 | 1981-05-12 | Brown & Root, Inc. | Self-elevating fixed platform |
GB2071740A (en) * | 1980-02-22 | 1981-09-23 | Mitsui Shipbuilding Eng | Method of assembling and testing a vertically movable marine working platform having groundable support frames |
EP0745729A1 (fr) * | 1995-06-02 | 1996-12-04 | Technip-Geoproduction | Plate-forme auto-élévatrice de forage ou d'exploitation pétrolière en mer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3014346A (en) * | 1957-09-10 | 1961-12-26 | Jersey Prod Res Co | Method and means for raising and lowering a platform |
US3183676A (en) * | 1960-10-20 | 1965-05-18 | Robert G Letourneau | Mobile sea platform |
US3727414A (en) * | 1971-06-28 | 1973-04-17 | Bowden Drilling Services Ltd | Off shore drilling platform construction |
US4255069A (en) * | 1979-08-01 | 1981-03-10 | The Offshore Company | Jack-up platform locking apparatus |
US4269543A (en) * | 1979-08-29 | 1981-05-26 | Freiede & Goldman, Ltd. | Mobile, offshore, self-elevating (jack-up) unit leg/hull rigidification system |
-
1997
- 1997-03-07 FR FR9702763A patent/FR2760474B1/fr not_active Expired - Fee Related
-
1998
- 1998-01-20 EP EP98400103A patent/EP0863260B1/fr not_active Expired - Lifetime
- 1998-01-20 ES ES98400103T patent/ES2195285T3/es not_active Expired - Lifetime
- 1998-01-20 DE DE69812754T patent/DE69812754T2/de not_active Expired - Fee Related
- 1998-02-03 US US09/018,303 patent/US5954453A/en not_active Expired - Lifetime
- 1998-03-04 MY MYPI98000954A patent/MY119478A/en unknown
- 1998-03-05 NO NO19980961A patent/NO316125B1/no not_active IP Right Cessation
- 1998-03-06 EA EA199800195A patent/EA000553B1/ru not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4266887A (en) * | 1977-06-10 | 1981-05-12 | Brown & Root, Inc. | Self-elevating fixed platform |
GB2071740A (en) * | 1980-02-22 | 1981-09-23 | Mitsui Shipbuilding Eng | Method of assembling and testing a vertically movable marine working platform having groundable support frames |
EP0745729A1 (fr) * | 1995-06-02 | 1996-12-04 | Technip-Geoproduction | Plate-forme auto-élévatrice de forage ou d'exploitation pétrolière en mer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109648269A (zh) * | 2019-01-02 | 2019-04-19 | 南通蓝岛海洋工程有限公司 | 一种海洋生活平台的提升腿桩建造工艺 |
Also Published As
Publication number | Publication date |
---|---|
US5954453A (en) | 1999-09-21 |
DE69812754D1 (de) | 2003-05-08 |
NO316125B1 (no) | 2003-12-15 |
NO980961L (no) | 1998-09-08 |
EP0863260B1 (fr) | 2003-04-02 |
NO980961D0 (no) | 1998-03-05 |
ES2195285T3 (es) | 2003-12-01 |
EA199800195A1 (ru) | 1998-10-29 |
FR2760474B1 (fr) | 1999-05-28 |
DE69812754T2 (de) | 2004-03-18 |
EA000553B1 (ru) | 1999-10-28 |
FR2760474A1 (fr) | 1998-09-11 |
MY119478A (en) | 2005-05-31 |
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