EP0699803A1 - Bohr- oder Produktionsmiesel versehen mit Mittel zum Verankern auf dem Meeresboden - Google Patents

Bohr- oder Produktionsmiesel versehen mit Mittel zum Verankern auf dem Meeresboden Download PDF

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Publication number
EP0699803A1
EP0699803A1 EP95401898A EP95401898A EP0699803A1 EP 0699803 A1 EP0699803 A1 EP 0699803A1 EP 95401898 A EP95401898 A EP 95401898A EP 95401898 A EP95401898 A EP 95401898A EP 0699803 A1 EP0699803 A1 EP 0699803A1
Authority
EP
European Patent Office
Prior art keywords
piles
leg
platform according
support
platform
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
EP95401898A
Other languages
English (en)
French (fr)
Other versions
EP0699803B1 (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 EP0699803A1 publication Critical patent/EP0699803A1/de
Application granted granted Critical
Publication of EP0699803B1 publication Critical patent/EP0699803B1/de
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
    • E02B17/02—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
    • E02B17/0017—Means for protecting offshore constructions
    • 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 platforms for oil drilling and relates more particularly but not exclusively to self-elevating platforms for drilling, and / or production at sea.
  • the platforms for carrying out drilling at sea have legs which are placed directly on the seabed to depths of approximately 100 m.
  • the legs of a platform must be firmly anchored in the seabed and it is necessary in order to consolidate the foundations, to fix each of the feet of the platform by means of piles deeply sunk into the ground which, taking into account the dimension of such piles, is a long and costly operation because it requires the intervention of heavy equipment and whose operating cost is extremely high.
  • the invention aims to remedy the drawbacks of known techniques, by creating an oil rig for drilling or exploitation at sea, the cost of installation on a marine site is considerably reduced and is not sensitive to the risks of scour and subsidence.
  • an oil drilling or exploitation platform at sea comprising a hull carried by legs provided with feet intended to bear on the seabed, characterized in that the walls of each of the legs delimit a space leading to the corresponding foot and in which are retracted the leg anchoring piles carried by the foot, each leg being further provided at its upper part with support means perpendicular to said piles inside the space provided by the walls of the leg, of a device for driving said piles into the sea floor.
  • the anchoring piles are carried by a support forming part of the base and separable from the latter.
  • each leg is provided with means for guiding the piles during their insertion.
  • each foot further carries peripheral anchoring piles intended to support the tilting forces undergone by the platform, in particular under the effect of the swell.
  • an oil drilling platform can be either fixed or self-elevating and comprising a shell 1 carried on three legs 2 made in the form of lattice of metal beams and each having a triangular section.
  • Each of the legs 2 is provided at its lower end with a solid foot, 3 in the form of a disc or triangle supporting the leg 2 in its central part and provided with a separable support 4 constituted by a disc central of smaller diameter and carrying anchor piles 5 housed in the space delimited by the walls of the leg 2.
  • the anchor piles 5 are piles of large section and are intended to withstand the effects of the load exerted on the legs by the mass of the platform. For this purpose, the piles 5 must be anchored deep in the sea floor.
  • each leg 2 has at its upper end opposite the foot 3 a cage 7 also made of metal beams and intended to support plumb of the anchoring piles 5 a hammer 8 of hydraulic type suspended from the cage 7 to the by means of a cable 9 in a manner which will be described in more detail with reference to FIG. 4.
  • each foot 3 in the form of a disc or triangle has at its periphery radial projections 10 arranged at 120 ° and carrying anchor piles 12 of smaller cross section than the main anchor piles 5, these peripheral piles which can be driven in either with lighter mobile equipment than the conventional equipment used for the installation of anchor piles or with the hammer 8 carried by means which will also be described with reference to FIG. 4.
  • Each of the legs 2 is equipped with means 14 for guiding the anchoring piles located in the space provided by the walls of the leg 2.
  • These guide means can be constituted by a plate occupying a cross section of each leg and provided axial orifices equal in number to the number of anchor piles 5 that each leg has.
  • each leg has three main anchor piles 5 and six peripheral anchor piles.
  • One of the legs of the platform according to the invention is shown partially, in more detail and on a larger scale in FIG. 2.
  • the disc-shaped foot has in its central part a housing 16 provided with a shoulder 17 intended to cooperate with a complementary shoulder 18 provided on the support 4 for the anchoring piles 5 with interpositions of jacks hydraulics 20 regularly distributed around the periphery of the support 4 and intended to be kept under pressure at the start of the setting up operations and in particular during the driving down operations of the main anchor piles 5 and to be released so that the load of each of the legs is transmitted by the disc 3 to the support 4 after the placement of the peripheral anchoring piles 12.
  • each anchor pile 5 which is tubular in shape has a nozzle 22 for receiving the shocks of the mass of the hammer 8.
  • the anchoring piles pass through the guide plate 14 by axial passages provided with sleeves 24 provided therein directly above the locations of the piles 5 in their support 4.
  • the guide plate 14 is fixed to the uprights 26 of the leg 2.
  • the main anchor piles 5 are mounted in axial bores 28 of the support 4 with the interposition of devices 30 for axial immobilization of the piles or piles 5 relative to the support 4, constituted for example by sleeves made integral with the foot and provided internally suitable means (not shown) for blocking the anchor piles relative to the sleeves.
  • the central anchor piles or piles 5 are designed to support each 3 to 4,000 tonnes while the peripheral batteries 12 each support approximately 1000 tonnes. It is therefore understandable that the latter can have smaller dimensions than those of the central piles and therefore they are easier to install without requiring the use of heavy equipment.
  • the anchor piles or peripheral piles 12 are arranged in orifices of the disc 3 forming a foot each provided with a clamp 10 fixed radially to the disc 3 by destructible fixing means such as for example explosive bolts not shown and intended to allow when removing the platform to separate the leg 3 from the latter relative to its peripheral anchoring stakes 12.
  • each leg of the platform according to the invention has in cross section a shape of an equilateral triangle.
  • the main anchor piles are also arranged in an equilateral triangle inside the space defined by the side walls of the leg 5.
  • the peripheral anchor piles 12 are themselves arranged at 120 ° opposite the vertices of the triangle equilateral defined by the cross section of the leg 2.
  • the invention also applies to platform legs which would have different sections, in particular tubular legs of circular section.
  • each leg 2 of the platform according to the invention comprises at its end, opposite the foot, a cage 7 for receiving and supporting a hammer 8 for driving the piles of central anchorage 5.
  • This cage is generally prismatic in shape. It is produced using a lattice of metal beams and at least one of its faces turned towards the inside of the shell 1 has a passage 40 of dimensions sufficient to allow the hammer 8 to pass through. in order to ensure the establishment thereof with respect to the leg 2 which it must drive in the anchor piles or piles 5 and the withdrawal using lifting and handling means equipping the platform (not shown) to transfer it to another leg of it.
  • Each of the cages 7 has, at its free upper part, a circular rail 42 fixed to the ends of the vertical uprights 43 of the corresponding leg and on which, as best seen in FIG. 4, is mounted angularly displaceable a first beam or arrow 44 by means of two diametrically opposed carriages 45 rolling on the circular rail.
  • the beam 44 angularly movable on the circular rail 42 has at one of its ends an extension 52 engaged telescopically in the beam 44 and carrying at its free end a cable 54 provided with a hook 56 for hanging the hydraulic hammer 8 in order to allow the said hammer to also be used to insure the peripheral anchoring piles 12.
  • the beam 44 carries in its middle a mast 58 whose upper end is connected to the ends of the beam 44 by guy lines 60.
  • the angular displacement of the beam 44 on its rail 42 allows its extension 52 to reach any point on the periphery of the corresponding leg 3 and in particular to be successively in line with the peripheral piles 12.
  • the latter comprises associated with each leg a passage 62 through which the hammer 8 can be lowered (Fig.1).
  • the hammer 8 as well as its mounting and suspension means constituted by the beam 44 and the carriages 45 are removable and transferable after the end of an operation of driving down anchoring piles from one leg 2 to the cage 7 d another leg.
  • the other peripheral anchoring stakes 12 are located outside the dimensions of the shell 1.
  • the feet 3 in the form of discs are separated from the peripheral piles 12 by destroying the fixing means which ensure the connection of the collars 10 to the discs 3. Furthermore, the central shoulder 17 of the foot 3 in the form of a disc 3 being turned inwards and situated above the complementary shoulder 18 of the support for the anchoring piles 5 turned outwardly, nothing prevents the raising of the legs 2 either by mechanical means carried by the hull if it is a self-lifting platform, or by any other lifting means if it is a platform with fixed legs.
  • the main anchor piles 5 and the peripheral piles 12 remain stuck in the ground after removal from the platform.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP95401898A 1994-08-30 1995-08-16 Bohr- oder Produktionsinsel versehen mit Mittel zum Verankern auf dem Meeresboden Expired - Lifetime EP0699803B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410432A FR2723975A1 (fr) 1994-08-30 1994-08-30 Plate-forme petroliere de forage ou d'exploitation en mer, pourvue de moyens perfectionnes d'ancrage dans le sol marin.
FR9410432 1994-08-30

Publications (2)

Publication Number Publication Date
EP0699803A1 true EP0699803A1 (de) 1996-03-06
EP0699803B1 EP0699803B1 (de) 2000-01-12

Family

ID=9466569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401898A Expired - Lifetime EP0699803B1 (de) 1994-08-30 1995-08-16 Bohr- oder Produktionsinsel versehen mit Mittel zum Verankern auf dem Meeresboden

Country Status (7)

Country Link
US (1) US5573355A (de)
EP (1) EP0699803B1 (de)
BR (1) BR9503830A (de)
FR (1) FR2723975A1 (de)
MY (1) MY113194A (de)
NO (1) NO309990B1 (de)
OA (1) OA10179A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2574698A1 (de) * 2011-09-30 2013-04-03 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum Treiben von mehreren Pfählen in den Meeresgrund

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5988949A (en) * 1996-01-11 1999-11-23 Mcdermott Int Inc Offshore jacket installation
US7352078B2 (en) * 2005-05-19 2008-04-01 Donald Hollis Gehring Offshore power generator with current, wave or alternative generators
GB0902289D0 (en) * 2009-02-12 2009-03-25 Marine Current Turbines Ltd Methods for installing pin-piled jacket type structures at sea
ES2385509B1 (es) * 2009-12-11 2013-02-18 Grupo De Ingeniería Oceánica, S.L. Plataforma oceánica, polivalente y su procedimiento de fabricación e instalación.
US20120125688A1 (en) * 2010-10-21 2012-05-24 Conocophillips Company Ice worthy jack-up drilling unit secured to the seafloor
EP3584369A1 (de) * 2018-06-18 2019-12-25 Vallourec Deutschland GmbH Vorrichtung zum nivellieren einer offshore-fundamentkonstruktion
US11608605B1 (en) * 2022-05-16 2023-03-21 Yona Becher Offshore ocean renewable energy hydro-turbine unit
CN114922153B (zh) * 2022-07-21 2022-09-27 华能山西综合能源有限责任公司 一种用于风电机组安装的可调节平台

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199038A1 (de) * 1972-09-08 1974-04-05 Sharp Inc G
EP0056635A2 (de) * 1981-01-19 1982-07-28 Pipe Technology Systems, Inc. Vorrichtung zum Eindrücken und Entfernen von Pfählen in Offshore-Anlagen und Verwendungsverfahren
JPS61162620A (ja) * 1985-01-14 1986-07-23 Mitsui Kaiyo Kaihatsu Kk 脚昇降型作業台の固定装置
JPS62291314A (ja) * 1986-06-09 1987-12-18 Nippon Kokan Kk <Nkk> ジヤツキアツプリグ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987636A (en) * 1975-04-30 1976-10-26 Brown & Root, Inc. Methods and apparatus for anchoring a submerged structure to a waterbed
US4322182A (en) * 1979-01-15 1982-03-30 Ostgaard John T Apparatus and method for under-water jacking of piles
US4696604A (en) * 1986-08-08 1987-09-29 Exxon Production Research Company Pile assembly for an offshore structure
US5012875A (en) * 1986-12-01 1991-05-07 Barnett & Casbarian, Inc. Method and apparatus for protecting a shallow-water well
US5094568A (en) * 1989-05-12 1992-03-10 Cbs Engineering, Inc. Offshore support structure method and apparatus
US4917541A (en) * 1989-08-09 1990-04-17 Cbs Engineering, Inc. Offshore support structure method and apparatus
IT1248590B (it) * 1991-06-28 1995-01-19 Saipem Spa Dispositivo perfezionato per il sollevamento e la battitura dei pali di fondazione di strutture offshore

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199038A1 (de) * 1972-09-08 1974-04-05 Sharp Inc G
EP0056635A2 (de) * 1981-01-19 1982-07-28 Pipe Technology Systems, Inc. Vorrichtung zum Eindrücken und Entfernen von Pfählen in Offshore-Anlagen und Verwendungsverfahren
JPS61162620A (ja) * 1985-01-14 1986-07-23 Mitsui Kaiyo Kaihatsu Kk 脚昇降型作業台の固定装置
JPS62291314A (ja) * 1986-06-09 1987-12-18 Nippon Kokan Kk <Nkk> ジヤツキアツプリグ

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 368 (M - 543) 9 December 1986 (1986-12-09) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 182 (M - 702) 27 May 1988 (1988-05-27) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2574698A1 (de) * 2011-09-30 2013-04-03 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum Treiben von mehreren Pfählen in den Meeresgrund
US8696248B2 (en) 2011-09-30 2014-04-15 Siemens Aktiengesellschaft Method and device for driving a multiplicity of piles into a seabed

Also Published As

Publication number Publication date
NO953366D0 (no) 1995-08-28
US5573355A (en) 1996-11-12
NO953366L (no) 1996-03-01
OA10179A (fr) 1996-12-18
FR2723975B1 (de) 1997-02-14
FR2723975A1 (fr) 1996-03-01
BR9503830A (pt) 1996-09-10
EP0699803B1 (de) 2000-01-12
MY113194A (en) 2001-12-31
NO309990B1 (no) 2001-04-30

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