EP0745729A1 - Selbsthebende Plattform für Bohren oder Öllgewinnung aus dem Meer - Google Patents

Selbsthebende Plattform für Bohren oder Öllgewinnung aus dem Meer Download PDF

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Publication number
EP0745729A1
EP0745729A1 EP96401122A EP96401122A EP0745729A1 EP 0745729 A1 EP0745729 A1 EP 0745729A1 EP 96401122 A EP96401122 A EP 96401122A EP 96401122 A EP96401122 A EP 96401122A EP 0745729 A1 EP0745729 A1 EP 0745729A1
Authority
EP
European Patent Office
Prior art keywords
leg
chain
legs
platform according
hull
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
Application number
EP96401122A
Other languages
English (en)
French (fr)
Other versions
EP0745729B1 (de
Inventor
Pierre-Armand Thomas
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 Geoproduction SA
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
Application filed by Technip Geoproduction SA filed Critical Technip Geoproduction SA
Publication of EP0745729A1 publication Critical patent/EP0745729A1/de
Application granted granted Critical
Publication of EP0745729B1 publication Critical patent/EP0745729B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • 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
    • 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
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
    • 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
    • E02B2017/006—Platforms with supporting legs with lattice style supporting legs
    • 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 present invention relates to a self-elevating drilling or exploitation platform at sea.
  • Platforms of this type generally comprise legs bearing on the seabed and a hull mounted displaceable and adjustable in height along the legs, said hull in particular supporting a drilling floor and a drilling tower.
  • the whole platform is brought into flotation to the drilling or exploitation site, and the legs are lowered in contact with a load-bearing structure or the seabed, then taking support on the legs, the hull is hoisted above sea level to an altitude which puts it beyond the reach of the highest waves.
  • the hull can therefore be moved along the legs of the platform by means of drive mechanisms housed in a structure well known to specialists under the name of "jack-house”.
  • These drive mechanisms comprise at least two opposite assemblies each formed by a motor associated with at least one reduction gear driving by an output pinion gear cooperating with opposite racks and mounted on the legs of the platform.
  • each leg is provided at its lower part with a foot, for example of square or hexagonal shape which comes to bear directly on the seabed or on the supporting structure.
  • the racks extend almost over the entire length of the legs and serve in their largest portion to retain these legs until the installation of the platform on the site of exploitation or drilling.
  • the racks are used, through the pinions, to slow down the descent of the legs until each foot touches the seabed or the supporting structure.
  • the racks extending almost over the entire length of the legs significantly weigh down the legs and increase the hydrodynamic drag of these legs when they are lowered.
  • each leg is made up of vertical members, three or four in number, linked together by a trellis of metal beams.
  • Each member is formed by sections welded end to end and each formed, on the one hand, by a rectangular plate and, on the other hand, by half-shell-shaped stiffeners each welded on one of the main faces of said plate.
  • the rectangular plates have on their lateral face teeth which form the diametrically opposite racks, intended to cooperate with the output pinions of the drive mechanisms.
  • the invention aims to remedy the drawbacks mentioned above, by creating a platform oil drilling or exploitation at sea whose weight and hydrodynamic drag of the legs are reduced.
  • the subject of the invention is therefore a self-elevating oil drilling or exploitation platform at sea, of the type comprising a hull mounted to be moved, between a floating position and an operating position out of the water, on load-bearing legs by means of drive mechanisms comprising at least two opposite assemblies each formed by a motor associated with at least one reducer driving an output pinion by a shaft cooperating with opposite racks and mounted on the legs, said legs being movable between a raised position and a position supported on a supporting structure or the seabed, characterized in that each rack is provided over a corresponding leg length necessary to move the hull between the flotation position and the operating position and in that it includes means for controlling the descent of each leg to the supporting structure or to the bottom ma rin.
  • FIGs. 1 to 3 there is shown schematically a self-elevating drilling or offshore oil exploitation platform comprising a hull 1 mounted movable and adjustable in position on vertical legs 2.
  • Each of the vertical legs 2 has, in the present case, a square section, and it is made up of four members 3 connected together by a trellis 4 of metal tubes.
  • the vertical legs 2 can also have a triangular or circular section.
  • Each vertical leg 2 ends at its lower part with a foot 5 which, in the present example, is of square shape, but can be of hexagonal shape.
  • the hull 1 is also provided with operating equipment and usual living quarters as well as a drilling tower, not shown.
  • the platform is brought into flotation on the site, that is to say that the hull 1 floats on the water and most of the legs 2 are out of the water.
  • the legs 2 are lowered so that the feet 5 are supported on a supporting structure 6 placed on the seabed 7 or are supported directly on the seabed 7 and, secondly, the hull 1 is hoisted above sea level, to an altitude which puts it out of the range of the highest waves, as shown in FIG. 2.
  • the drive mechanisms 10 are provided at each member 3 of the vertical legs 2 and are housed in a structure well known to specialists under the name "jack-house”.
  • Each drive mechanism 10 is made up of at least two opposite assemblies 11 each formed by a motor 12 associated with a reduction gear 13.
  • each drive mechanism 10 consists of three pairs of sets 11 superimposed one above the other, the number of pairs of sets superimposed being a function of the mass of the hull 1 to be moved.
  • each assembly 11 drive an output pinion 15 which cooperates with a rack 16 provided on a shaft 14. the corresponding member 3.
  • each frame 3 of each of the legs 2 comprises two racks 16 opposite and which extend only over a determined length of said legs 2.
  • the pinions 15 and the racks 16 have, in the platform according to the invention, only for the purpose of ensuring the displacement of the hull 1 between the flotation position (Fig. 1) and the operating position out of the water (Fig. 2).
  • each rack 16 is arranged at the upper part of the members 3 of the legs 2, as shown in FIGS. 1 and 2.
  • the racks 16 extend over a height of between 20 and 30% of the total height of the legs 2.
  • the racks 16 extend over a height of 29 meters, which represents approximately 22% of the total height of the legs 2.
  • the platform according to the invention is equipped with means 20 for controlling the descent of each leg 2.
  • Each leg 2 is equipped with four means for controlling the descent of the corresponding leg 2 and each means consists of two chains 21 which cooperate with the lower assembly 11 of each drive mechanism 10.
  • each leg 2 is associated with eight chains 21 for the descent of the corresponding leg.
  • Each chain 21 has a first end 21a detachably connected to the corresponding foot 5 and a second end 21b connected to the shell 1.
  • each chain 21 cooperates with a meshing member 22 mounted on the drive shaft 14 of an output pinion 15.
  • each chain is sufficient to allow the corresponding leg 2 to descend from its raised position to its position in abutment on the carrying structure 6 or on the seabed 7.
  • Each meshing member 22 cooperating with a chain 21 is constituted for example by a toothed wheel or by a capstan wheel.
  • each meshing member 22 is greater than the diameter of the output pinion 15 so that the running speed of each chain 21 is greater than the tangential speed developed by the pinions 15 on the racks 16.
  • each chain 21 is connected to the foot 5 by means of a hook 25 which is itself connected to the foot 5 by an elastic connection member 26 constituted for example by a superposition of elastic washers or by any other appropriate device.
  • each chain 21 is therefore removably connected to the corresponding foot 5 and is connected to the shell 1 by a recovery line 27, a first end 27a of which is connected to the end 21a of the corresponding chain and one of which second end 27b is fixed to the drum of a winch 28 allowing the corresponding chain 21 to be raised, as will be seen later.
  • each chain 21 can be detached from the hook 25 for example by a robot or by any other suitable means.
  • each foot 5 of the platform constitutes a buoyancy element making it possible to reduce the speed of descent of the legs 2 and to reduce the weight of these legs 2 as they descend.
  • the installation of the platform on the supporting structure 6 or on the seabed 7 is carried out as follows.
  • the chains 21 unfold gradually and the length of these chains is sufficient for the descent of the legs 2 to the carrying structure 6 or to the seabed.
  • the racks 16 mesh progressively on the pinions 15 and the weight of the hull 1 is gradually taken into account as and when that the hull 1 comes out of the water by pinions 15.
  • the feet 5 which form buoyancy elements retain these legs 2 thus reducing the loads applied to the chains 21 and the engagement members 22.
  • the shell 1 is gradually lifted out of the water by means of the racks 4 and the pinions 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP96401122A 1995-06-02 1996-05-23 Selbsthebende Plattform für Bohren oder Ölgewinnung aus dem Meer Expired - Lifetime EP0745729B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9506604 1995-06-02
FR9506604A FR2734851B1 (fr) 1995-06-02 1995-06-02 Plate-forme auto-elevatrice de forage ou d'exploitation petroliere en mer.

Publications (2)

Publication Number Publication Date
EP0745729A1 true EP0745729A1 (de) 1996-12-04
EP0745729B1 EP0745729B1 (de) 2003-03-26

Family

ID=9479629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401122A Expired - Lifetime EP0745729B1 (de) 1995-06-02 1996-05-23 Selbsthebende Plattform für Bohren oder Ölgewinnung aus dem Meer

Country Status (8)

Country Link
US (1) US5833396A (de)
EP (1) EP0745729B1 (de)
JP (1) JP3754495B2 (de)
KR (1) KR100412012B1 (de)
ES (1) ES2194085T3 (de)
FR (1) FR2734851B1 (de)
NO (1) NO312207B1 (de)
SG (1) SG54338A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863260A1 (de) * 1997-03-07 1998-09-09 Technip Geoproduction Verfahren zum Verbinden der Beingurte einer Ölplattform
FR2913241A1 (fr) * 2007-03-01 2008-09-05 Technip France Sa Plate-forme auto-elevatrice de tres grandes dimensions pour le traitement de gaz de petrole en mer et procede d'assemblage et d'installation d'une telle plate-forme.
WO2008113389A1 (en) * 2007-03-20 2008-09-25 Siemens Aktiengesellschaft Jack-up platform
FR2963367A1 (fr) * 2010-07-30 2012-02-03 Cie Engrenages Et Reducteurs Messian Durand Ascenseur a bateau
CN105603954A (zh) * 2016-03-18 2016-05-25 中国石油集团渤海石油装备制造有限公司 一种用于自升式钻井平台桩腿转向滑移接桩的装置

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759400B1 (fr) * 1997-02-07 1999-04-23 Schlumberger Services Petrol Plate-forme de forage petrolier du type "jack-up" ou a piliers elevateurs a cremaillere, a elevation independante pour chaque membrure de chaque pilier
DK0942102T3 (da) * 1998-03-11 2005-01-10 Technip France Selvlöftende platform med nedsænket reservoir og fremgangsmåde til anbringelse og ophejsning af reservoiret
US6200069B1 (en) 1999-07-20 2001-03-13 George Austin Miller Hovercraft work platform
FR2876124B1 (fr) * 2004-10-06 2007-04-13 Technip France Sa Plate-forme d'exploitation en mer et procedes d'installation sur un site d'exploitation en mer d'une telle plate-forme
BRPI0606986A2 (pt) * 2005-02-04 2010-03-16 Technip France sistema de travamento complementar das pernas em uma ponte de uma plataforma de exploração no mar e processo de colocação de um sistema de travamento
US20090090191A1 (en) * 2007-10-05 2009-04-09 Bernardino Lenders Methods and structures for monitoring offshore platform supports
US8336388B2 (en) 2007-10-05 2012-12-25 National Oilwell Varco, L.P. Methods and structures for monitoring offshore platform supports
CN101214846A (zh) * 2007-12-29 2008-07-09 汪东君 一种用于自行车踏板拆装的装置及一步控制拆装的组件
NL2005755C2 (en) * 2010-11-25 2012-05-29 Cobus Beheer B V Floating marine structure.
CN103089231B (zh) * 2011-10-27 2015-07-01 中集船舶海洋工程设计研究院有限公司 自升式海洋平台的驱动系统
CN105035260B (zh) * 2015-05-19 2017-06-16 中国海洋石油总公司 利用双船浮托整体拆除海上弃置平台上部组块的方法
CN106373449B (zh) * 2016-10-18 2019-01-29 浙江海洋大学 一种模拟海上作业工况的海洋工程试验平台装置
FR3103000B1 (fr) 2019-11-13 2022-08-05 Technip France Installation pour supporter une plate-forme auto-élévatrice de forage ou d’exploitation pétrolière

Citations (5)

* Cited by examiner, † Cited by third party
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
US3044269A (en) * 1957-07-22 1962-07-17 Tourneau Robert G Le Mobile sea platform
FR2282021A1 (fr) * 1974-08-12 1976-03-12 Strabag Bau Ag Plate-forme pour travaux en mer
FR2329809A1 (fr) * 1975-11-03 1977-05-27 Strabag Bau Ag Plateforme pour travaux en mer
FR2643401A1 (fr) * 1989-02-22 1990-08-24 Brissonneau & Lotz Mecanismes de manoeuvre de plateformes de forage auto-elevatrices, et plateformes munies de ces mecanismes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US516032A (en) * 1894-03-06 Submarine-drilling apparatus
US3011467A (en) * 1957-07-22 1961-12-05 Robert G Letourneau Mobile sea platform
US2996284A (en) * 1958-12-15 1961-08-15 Welborn Jack Vernon Shinning jack
GB1169262A (en) * 1965-08-10 1969-11-05 Vickers Ltd Improved floatable vessel
US3435621A (en) * 1966-07-26 1969-04-01 American Mach & Foundry Jacking system for offshore platforms
US3946684A (en) * 1971-01-18 1976-03-30 Sumner Maurice N Semi-submersible jackup apparatus
FI802781A (fi) * 1979-09-07 1981-03-08 Brown & Ass James G Stoedstruktur foer havsplattform
DE3112702A1 (de) * 1981-03-31 1982-10-07 Deutsche Babcock Anlagen Ag, 4200 Oberhausen Hubeinrichtung fuer eine offshore-konstruktion
FR2607165B1 (fr) * 1986-11-26 1990-07-20 Technip Geoproduction Dispositif de suspension des jambes de support de plate-forme petroliere auto-elevatrice

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044269A (en) * 1957-07-22 1962-07-17 Tourneau Robert G Le Mobile sea platform
US3014346A (en) * 1957-09-10 1961-12-26 Jersey Prod Res Co Method and means for raising and lowering a platform
FR2282021A1 (fr) * 1974-08-12 1976-03-12 Strabag Bau Ag Plate-forme pour travaux en mer
FR2329809A1 (fr) * 1975-11-03 1977-05-27 Strabag Bau Ag Plateforme pour travaux en mer
FR2643401A1 (fr) * 1989-02-22 1990-08-24 Brissonneau & Lotz Mecanismes de manoeuvre de plateformes de forage auto-elevatrices, et plateformes munies de ces mecanismes

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863260A1 (de) * 1997-03-07 1998-09-09 Technip Geoproduction Verfahren zum Verbinden der Beingurte einer Ölplattform
FR2760474A1 (fr) * 1997-03-07 1998-09-11 Technip Geoproduction Procede d'assemblage de troncons de jambes de support d'une plate-forme petroliere
US5954453A (en) * 1997-03-07 1999-09-21 Technip Geoproduction Method of assembling sections of support legs of an oil platform
MY119478A (en) * 1997-03-07 2005-05-31 Technip Geoproduction Method of joining supporting-leg sections of an oil-platform
WO2008125765A1 (fr) * 2007-03-01 2008-10-23 Technip France Plate-forme auto-elevatrice de tres grandes dimensions pour le traitement de gaz ou de petrole en mer et procede d'assemblage et d'installation d'une telle plate-forme
FR2913241A1 (fr) * 2007-03-01 2008-09-05 Technip France Sa Plate-forme auto-elevatrice de tres grandes dimensions pour le traitement de gaz de petrole en mer et procede d'assemblage et d'installation d'une telle plate-forme.
AU2008237827B2 (en) * 2007-03-01 2013-05-02 Technip France Very large self-jacking platform for processing gas or oil at sea and method of assembling and installing such a platform
AU2008237827B8 (en) * 2007-03-01 2013-09-12 Technip France Very large self-jacking platform for processing gas or oil at sea and method of assembling and installing such a platform
AU2008237827A8 (en) * 2007-03-01 2013-09-12 Technip France Very large self-jacking platform for processing gas or oil at sea and method of assembling and installing such a platform
WO2008113389A1 (en) * 2007-03-20 2008-09-25 Siemens Aktiengesellschaft Jack-up platform
CN101636539B (zh) * 2007-03-20 2011-09-21 西门子公司 自升式平台
US8113742B2 (en) 2007-03-20 2012-02-14 Siemens Aktiengesellschaft Jack-up platform
US8454272B2 (en) 2007-03-20 2013-06-04 Siemens Aktiengesellschaft Jack-up platform
FR2963367A1 (fr) * 2010-07-30 2012-02-03 Cie Engrenages Et Reducteurs Messian Durand Ascenseur a bateau
CN105603954A (zh) * 2016-03-18 2016-05-25 中国石油集团渤海石油装备制造有限公司 一种用于自升式钻井平台桩腿转向滑移接桩的装置

Also Published As

Publication number Publication date
FR2734851B1 (fr) 1999-03-05
JPH09100525A (ja) 1997-04-15
KR100412012B1 (ko) 2004-04-09
NO312207B1 (no) 2002-04-08
EP0745729B1 (de) 2003-03-26
KR970001847A (ko) 1997-01-24
US5833396A (en) 1998-11-10
FR2734851A1 (fr) 1996-12-06
NO962206L (no) 1996-12-03
NO962206D0 (no) 1996-05-30
SG54338A1 (en) 1998-11-16
ES2194085T3 (es) 2003-11-16
JP3754495B2 (ja) 2006-03-15

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