EP0271377B1 - Dispositif de suspension des jambes de support de plateforme pétrolière auto-élévatrice - Google Patents

Dispositif de suspension des jambes de support de plateforme pétrolière auto-élévatrice Download PDF

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Publication number
EP0271377B1
EP0271377B1 EP87402505A EP87402505A EP0271377B1 EP 0271377 B1 EP0271377 B1 EP 0271377B1 EP 87402505 A EP87402505 A EP 87402505A EP 87402505 A EP87402505 A EP 87402505A EP 0271377 B1 EP0271377 B1 EP 0271377B1
Authority
EP
European Patent Office
Prior art keywords
suspension device
legs
torsion bar
bars
reduction gear
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.)
Expired - Lifetime
Application number
EP87402505A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0271377A1 (fr
Inventor
Pierre Armand Thomas
Raphael Grundman
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.)
Compagnie Engrenages et Reducteurs Messian Durand SA
Technip Geoproduction SA
Original Assignee
Compagnie Engrenages et Reducteurs Messian Durand SA
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 Compagnie Engrenages et Reducteurs Messian Durand SA, Technip Geoproduction SA filed Critical Compagnie Engrenages et Reducteurs Messian Durand SA
Publication of EP0271377A1 publication Critical patent/EP0271377A1/fr
Application granted granted Critical
Publication of EP0271377B1 publication Critical patent/EP0271377B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E02B17/024—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 shock absorbing means for the supporting construction
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/45—Flexibly connected rigid members
    • Y10T403/455—Elastomer interposed between radially spaced members
    • Y10T403/457—Elastomer interposed between radially spaced members including axially acting compressing means

Definitions

  • the present invention relates to a device for suspending the support legs of platforms for drilling or offshore oil production and relates more particularly to self-elevating platforms.
  • Platforms of this type generally have legs resting on the seabed and a movable hull mounted and adjustable in height along the legs.
  • the entire platform is brought into flotation to the drilling or operating site, and the legs are lowered until they come into contact with the seabed, then, bearing on the legs, the hull is hoisted above the sea level, up to an altitude that puts it out of reach of the highest waves.
  • the hull is therefore movable along the legs of the platform by means of lifting mechanisms integral with said hull and having output pinions whose bearings are integral with the hull and cooperating with racks mounted on at least part of the length legs.
  • These pinions are motorized by a plurality of electric motors associated with reducers whose reduction ratio is very high.
  • the invention therefore aims to remedy the aforementioned drawbacks of conventional devices by creating a device for suspending the legs of a self-elevating oil platform which, while being of a relatively simple construction, makes it possible to reduce the stresses due to impacts in the structure. and especially in the gear box of the reducers, and to install the platform with more severe sea conditions, therefore in wider weather windows, which reduces installation costs.
  • a device for suspending the legs of the self-elevating oil platform support comprising a hull mounted displaceable on the legs by means of drive mechanisms comprising a plurality of output pinions cooperating with racks mounted on a part at less than the length of the legs, each of said output pinions being motorized by an electric motor associated with a reduction gear, mounted articulated on a structure supporting them and secured to the shell by means of at least one bearing allowing a determined angular movement of said reduction gear and of each corresponding output pinion, characterized in that each reduction gear of the drive mechanisms cooperates with an energy absorption mechanism comprising at least one elastic torsional support member connected to said corresponding reduction gear and ensuring damping progressive shock especially when putting the legs s on the seabed.
  • FIG 1 there is schematically shown a self-elevating oil platform comprising a hull 1 movable mounted on vertical legs 2 intended to bear on the seabed 3 when the platform is in the drilling or operating position.
  • Each of the vertical legs 2 has in the present case a triangular section and it is made up of three uprights 2a, connected together by a lattice of metal beams. It ends at its lower part with a leg 4 which, in the present example, is hexagonal in shape.
  • the platform is also equipped, at each leg 2, with a movement and suspension system 10 for the shell 1 relative to said legs.
  • This displacement system 10 makes it possible to descend the legs 2 until contact with the seabed, then, taking support on the legs, to hoist the hull 1 above the sea, to an altitude which puts it out of reach higher waves.
  • the uprights 2a of the legs 2 are provided with racks 5 diametrically opposed, arranged over a part of the length of the legs 2 and with which are intended to cooperate output pinions 11 motorization mechanisms 12 mounted on the hull 1. It is possible, for example, to provide six output pinions for each upright 2a each equipped with a motorization mechanism 12.
  • This figure partially shows the upright 2a of a leg provided with the rack 5 which cooperates with the output pinion 11.
  • This output pinion 11 is mounted on a guided shaft 13, at one of its ends, by a bearing 14 of a structure 15 integral with the shell.
  • the shaft 13 is driven in rotation by a reduction gear 16 which is itself driven by an electric motor 17.
  • the reduction gear 16 is articulated on the structure 15 which supports it by means of bearings 18a and 18b so as to allow a certain angular movement of said reduction gear and therefore of the output pinion 11 corresponding during the descent and the laying of the leg, as we will see later.
  • the reducer 16 is connected to an energy absorption mechanism 20, in particular at the time of contact of the leg 2 on the seabed.
  • the reduction gear 16 externally comprises two flanges 19a and 19b between which is fixed a toothed sector 21 which cooperates with a pinion 22 (FIG. 5) mounted on an axis 23 which is guided in rotation by a casing 24 fixed on the structure 15.
  • the pinion 22 is mounted on the end 25a of an elastic support member which, in the example shown in FIG. 4, consists of a torsion bar 25 placed in a housing 26 provided inside the structure 15. The other end 25b of the torsion bar 25 is immobilized on the structure 15.
  • This torsion bar 25 can be made of steel or a composite material having good mechanical strength. It can also be formed by a tube made of composite material obtained by winding and composed of son of glass and epoxy resin.
  • the reduction gear 16 also comprises, opposite the toothed sector 21, a lug 27 for limiting the angular movement of said reduction gear between two end of travel stops 28a and 28b (FIG. 5).
  • the entire platform is therefore brought into flotation to the drilling or operating site, and the legs 2 are lowered until they come into contact with the seabed.
  • the electric motors 17 therefore drive via the reducers 16 the output pinions 11 which mesh with racks 5.
  • the electric motors 17 play the role of brakes.
  • This suspension device absorbs the shock upon contact of the leg on the seabed by a gradual absorption of energy over a stroke determined by the stops 28a and 28b between which the lug 27 of the reducer 16 of each mechanism moves. motorization.
  • This stroke allows, thanks to the articulated mounting of the reducers 16 on the structure, a certain rotation of the output pinions 11 at the time of impact, thus allowing the racks 5 and therefore the legs 2 to oscillate and stabilize by gradually transmitting the load of the platform on the seabed.
  • the elastic support member of the energy absorption mechanism 20 is constituted by two torsion bars 30 and 31 mounted in series and placed in the housing 26 of the structure 15.
  • the toothed sector 21 of the reduction gear 16 meshes with the pinion 22 mounted on the axis 23 guided in rotation by a casing 32 fixed to the structure 15.
  • the pinion 22 is mounted on the end 30a of the first torsion bar 30.
  • L 'other end 30b of this first torsion bar 30 is integral with a pinion 33 which meshes on a pinion 34 integral with the end 31 a of the second torsion bar 31.
  • the pinions 33 and 34 are each mounted on an axis respectively 35 and 36 guided in rotation by a rear casing 37 fixed to the structure 15.
  • the end 31b of the second torsion bar 31 is immobilized on the front casing 32.
  • the reaction torque applied to the reducers 16 is transmitted, via the toothed sector 2 and the pinion 30, to the first torsion bar 30 which deforms.
  • the first torsion bar 30 drives the pinions 33 and 34 which causes the deformation of the second torsion bar 31, one of the ends of which is immobilized on the structure.
  • the torque is therefore taken up by the two torsion bars 30 and 31, which makes it possible to absorb the shock at the time of the contact of the leg on the sea bed.
  • the end 40a of the torsion bar 40 comprises, as before, a pinion 22 cooperating with the toothed sector 21 fixed on the reducers 16.
  • the other end 40b of the torsion bar 40 is provided with a system 41 for presetting the torsion of said bar.
  • This presetting system 41 is constituted by a reduction motor 42 driving a toothed wheel 43 which meshes with a toothed crown 44 fixed on the end 40b of the torsion bar.
  • This presetting system can advantageously consist of a worm and tangent wheel assembly.
  • the presetting system allows, by means of the toothed wheel 43 and the toothed crown 44, to pre-deform the torsion bar 40 and to modify the position of the neutral point of the pin 27 limiting the angular movement of the reducer between the two end of travel stops 28a and 28b ( Figure 5).
  • the energy absorption mechanism 20 shown in FIG. 8 comprises a torsion bar 50 formed by a tubular sleeve of elastomer or similar elastic material with or without incorporation of rigid washers.
  • the end 50a of the torsion bar 50 is mounted on the pinion 22 driven by the toothed sector 21 and the opposite end 50b is immobilized on the structure 15.
  • this torsion bar can also be formed by a solid cylinder of elastomer or similar elastic material, or else of laminated material formed by a juxtaposition of elastomer washers and rigid washers.
  • the end 50b of the torsion bar 50 can also be associated with a torsion presetting system.
  • suspension device also makes it possible to equalize the torques between all the reducers of the system for moving the legs relative to the hull, and thus offers the possibility of being able to carry out the laying of the platform with more severe sea conditions, therefore in wider weather windows, which significantly reduces installation costs.
  • this device also offers the possibility of being able to measure the load applied to the output pinions of the reducers, for example by placing a measuring member on the end of the torsion bar opposite the drive pinion, and by measuring the angle of rotation of the rotating end of the torsion bar, said angle being proportional to this load.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Earth Drilling (AREA)
  • Gear Transmission (AREA)
  • Jib Cranes (AREA)
  • Vehicle Body Suspensions (AREA)
EP87402505A 1986-11-26 1987-11-05 Dispositif de suspension des jambes de support de plateforme pétrolière auto-élévatrice Expired - Lifetime EP0271377B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616504A FR2607165B1 (fr) 1986-11-26 1986-11-26 Dispositif de suspension des jambes de support de plate-forme petroliere auto-elevatrice
FR8616504 1986-11-26

Publications (2)

Publication Number Publication Date
EP0271377A1 EP0271377A1 (fr) 1988-06-15
EP0271377B1 true EP0271377B1 (fr) 1990-05-09

Family

ID=9341247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402505A Expired - Lifetime EP0271377B1 (fr) 1986-11-26 1987-11-05 Dispositif de suspension des jambes de support de plateforme pétrolière auto-élévatrice

Country Status (12)

Country Link
US (1) US4880336A (da)
EP (1) EP0271377B1 (da)
JP (1) JPS63247422A (da)
KR (1) KR950008725B1 (da)
CN (1) CN1012974B (da)
BR (1) BR8706368A (da)
CA (1) CA1327278C (da)
DK (1) DK167448B1 (da)
FI (1) FI88321C (da)
FR (1) FR2607165B1 (da)
IN (1) IN170521B (da)
NO (1) NO169606C (da)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653462B1 (fr) * 1989-10-24 1992-02-14 Technip Geoproduction Dispositif de suspension et de manutention integrees des jambes d'une plate-forme petroliere auto-elevatrice.
CA2033108C (en) * 1990-12-24 2002-04-02 Deke Dettbarn Shock absorbing motor mount for a rotary cutter
FR2734851B1 (fr) * 1995-06-02 1999-03-05 Technip Geoproduction Plate-forme auto-elevatrice de forage ou d'exploitation petroliere en mer.
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
DE102004019975A1 (de) * 2004-04-23 2005-11-10 Siemens Ag Vorrichtung mit mindestens einer über Wasser aufbockbaren Trägerfläche
SG120998A1 (en) * 2004-09-15 2006-04-26 Offshore Technology Dev Pte Lt Interactive leg guide for offshore self elevating unit
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
CN108593202B (zh) * 2018-04-28 2021-05-28 中国石油天然气集团有限公司 一种用于扭矩测量的标定方法系统
CN115787755B (zh) * 2023-01-18 2023-04-18 西南石油大学 自升式钻井平台插拔桩作业模拟试验系统及方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855212A (en) * 1956-11-05 1958-10-07 Flxible Company Independent front wheel torsion suspension for vehicles
US3075786A (en) * 1960-10-03 1963-01-29 Ford Motor Co Vehicle independent suspension system
US3406523A (en) * 1966-01-14 1968-10-22 Cambridge Fender & Engineering Buffers or energy absorbers
FR2436099A1 (fr) * 1978-09-14 1980-04-11 Brissonneau & Lotz Mecanisme de levage pour plate-forme auto-elevatrice
US4269543A (en) * 1979-08-29 1981-05-26 Freiede & Goldman, Ltd. Mobile, offshore, self-elevating (jack-up) unit leg/hull rigidification system
FR2493887B1 (fr) * 1980-11-10 1986-05-02 Francois Durand Reducteur limiteur d'effort pour pignon de levage de plate-forme auto-elevatrice
NL8103452A (nl) * 1981-07-21 1983-02-16 Rsv Gusto Eng Bv Hefinrichting voor een kunstmatig eiland of werkplatform.
US4482272A (en) * 1982-04-23 1984-11-13 Ateliers Et Chantiers De Bretagne Acb Load transfer and monitoring system for use with jackup barges
FR2560246B1 (fr) * 1984-02-28 1986-07-25 Thomas Pierre Armand Dispositif de verrouillage pour plate-forme petroliere
US4759662A (en) * 1986-06-30 1988-07-26 Lockheed Corporation TLP marine riser tensioner

Also Published As

Publication number Publication date
CN1012974B (zh) 1991-06-26
KR880006427A (ko) 1988-07-22
DK617887A (da) 1988-05-27
DK167448B1 (da) 1993-11-01
NO874844L (no) 1988-05-27
FI875119A (fi) 1988-05-27
FR2607165B1 (fr) 1990-07-20
US4880336A (en) 1989-11-14
FI875119A0 (fi) 1987-11-19
CN87107937A (zh) 1988-07-20
EP0271377A1 (fr) 1988-06-15
JPH0451607B2 (da) 1992-08-19
IN170521B (da) 1992-04-04
FI88321C (fi) 1993-04-26
FR2607165A1 (fr) 1988-05-27
NO169606B (no) 1992-04-06
DK617887D0 (da) 1987-11-24
KR950008725B1 (ko) 1995-08-04
BR8706368A (pt) 1988-07-26
CA1327278C (en) 1994-03-01
FI88321B (fi) 1993-01-15
JPS63247422A (ja) 1988-10-14
NO169606C (no) 1992-07-15
NO874844D0 (no) 1987-11-20

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