EP2049388B1 - Pile de succion adaptee aux faibles profondeurs - Google Patents

Pile de succion adaptee aux faibles profondeurs Download PDF

Info

Publication number
EP2049388B1
EP2049388B1 EP07803873A EP07803873A EP2049388B1 EP 2049388 B1 EP2049388 B1 EP 2049388B1 EP 07803873 A EP07803873 A EP 07803873A EP 07803873 A EP07803873 A EP 07803873A EP 2049388 B1 EP2049388 B1 EP 2049388B1
Authority
EP
European Patent Office
Prior art keywords
suction
piston
water
seabed
cylindrical wall
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
EP07803873A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2049388A2 (fr
Inventor
Pierre-Armand Thomas
A. Brian Roberts
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
Application filed by Technip France SAS filed Critical Technip France SAS
Publication of EP2049388A2 publication Critical patent/EP2049388A2/fr
Application granted granted Critical
Publication of EP2049388B1 publication Critical patent/EP2049388B1/fr
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 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/26—Anchors securing to bed
    • B63B21/27—Anchors securing to bed by suction

Definitions

  • the present invention relates to a suction pile intended to be driven into a seabed, in particular in a shallow seabed.
  • Suction piers are used to anchor facilities or structures in the seabed to keep them in a fixed position.
  • These well known suction cells comprise a cylindrical wall and inside, a partition which divides the cylindrical wall into two sealed chambers vis-à-vis the other.
  • the cylindrical wall then has an open suction end adapted to be applied against the seabed so as to close one of said chambers.
  • This chamber is then filled with water and pumping means are adapted to extract the water from said chamber to create a depression and cause the depression of the cylindrical wall in the seabed.
  • pumping means are adapted to extract the water from said chamber to create a depression and cause the depression of the cylindrical wall in the seabed.
  • the document DE 10324161 which is considered to be the closest state of the art, describes a suction stack for limited depth water extension.
  • the depression of the cylindrical wall in the seabed is all the easier, as the depth of said seabed is high.
  • the hydrostatic pressure which increases with depth, contributes to exerting efforts on the suction pile, which favor its penetration.
  • the forces exerted on the upper end of the suction pile which, for example, has a length of 15 meters. meters, are relatively weak since they are related to the hydrostatic pressure which prevails at 35 meters depth.
  • a problem that arises and that aims to solve the present invention is to facilitate the penetration of suction piles in shallow seabed.
  • the present invention proposes a suction pile intended to be driven into a seabed, said seabed being surmounted by water, the water having a bottom hydrostatic pressure in the vicinity of said bottom, said stack suction nozzle comprising a cylindrical wall and a piston movable inside said cylindrical wall, said cylindrical wall having an open suction end adapted to be inserted into said seabed, said piston sealingly delimiting two opposite chambers, one of said chambers extending between said suction end and said piston being capable of filling with water when said suction end is disposed against the seabed, said suction cell further comprising pumping means for extracting the water contained in said one of said chambers and cause the depression of said suction end open in said seabed;
  • said suction cell comprises means for blocking said piston with respect to said cylindrical wall, whereas said cylindrical wall has a water inlet end opposite said suction end with respect to said piston to allow arrival of water at the hydrostatic pressure in the other chamber; and said piston is alternately locked and driven in motion from said suction end
  • a feature of the invention lies in the hydrostatic pressure of the other chamber, opposite to the suction chamber and also in the mode of cooperation of the piston and the wall cylindrical, which are alternately blocked with respect to each other as the cylindrical wall sinks into the seabed.
  • the piston is initially driven towards the open suction end and is blocked at a distance from the latter, so as to provide a suction chamber filled with water.
  • the cylindrical wall extends vertically on the seabed, and the piston located near the bottom is then subjected to the hydrostatic pressure of the seabed, since the water inlet end has allowed the filling of the wall cylindrical.
  • the piston which is blocked relative to the cylindrical wall transmits the forces it undergoes thanks to the hydrostatic pressure, and which are exerted vertically towards the seabed. Therefore, the combined effects of suction of water from the suction chamber and the aforementioned forces on the cylindrical wall allow a faster depression of the suction pile.
  • the cylindrical wall sinks into the seabed and the suction of the water from the suction chamber, the sediments of said seabed rise up into the suction chamber and then come against the piston.
  • the initially blocked piston is then unlocked and then drag towards the water inlet end for a certain distance, allowing water to enter the suction chamber, then being blocked again in the vicinity. of the seabed.
  • the piston is then always subjected to the hydrostatic pressure of the seabed, and the forces it undergoes being transmitted to the cylindrical wall.
  • the piston can then be sequentially reassembled until the total depression of the cylindrical wall.
  • said water inlet end has an opening corresponding substantially to the cross section of said cylindrical wall so that the other chamber which surmounts the suction chamber is initially filled with water and therefore the piston subjected to the hydrostatic pressure.
  • said locking means preferably comprise a line, for example formed of a chain, connected to said piston and retaining means of said line for retaining said line in a direction from said water inlet end towards said suction end.
  • said line extending above said piston towards the water inlet end is likely to be engaged in the retaining means which are integral with the cylindrical wall, so that the forces which are exerted on the piston can be transmitted to said cylindrical wall via said line and retaining means.
  • said water inlet end has a passage path of said line to allow the extension of said line outside said cylindrical wall.
  • said driving of the piston towards the water inlet end likely to be carried out by translating said line in a direction opposite to the seabed, for example by means of a winch installed on a surface boat.
  • said retaining means of said line are mounted on said cylindrical wall at said water inlet end, so that the piston can be driven from the suction end to the end. water inlet over the entire length of the cylindrical wall. In this way, the entire cylindrical wall can be driven into the seabed with the help of the piston on which the seabed hydrostatic pressure is applied.
  • said retaining means of said line comprise controllable locking means which alternately allow to unlock and re-lock said line as the piston is raised towards the water inlet end.
  • said pumping means are adapted to extract the water in said one of said chambers through said piston to reject it in said other chamber and create a depression in said one of said chambers.
  • they are for example installed on the piston.
  • the pumping means are deactivated and they allow water to enter the suction chamber.
  • said piston is advantageously equipped with a circular seal to seal between said two opposite chambers.
  • the Figure 1 illustrates a suction stack 10 according to the invention and intended to be driven into a seabed.
  • the suction cell 10 has a cylindrical wall 12 which extends longitudinally along an axis of symmetry A and in which is mounted a piston 14 movable in translation along said axis of symmetry A.
  • the cylindrical wall 12 has for example a length between 18 and 25 meters and a diameter between 7 and 12 meters.
  • the piston 14 delimits sealingly, thanks to a seal 16 which surrounds it and which is pressed against an inner surface 18 of the cylindrical wall 12, two chambers each of them is sealed to each other, a lower suction chamber 20 and an opposite upper chamber 22.
  • the seal 16 is for example an expandable seal, the expansion of which is controllable by means of a pressurized fluid, for example with pressurized oil.
  • the cylindrical wall 12 has a lower suction end 24 which is open and an upper end of the water inlet 26 also open.
  • the upper end of the water inlet 26 here has two crossed structure members 28, 30 which respectively extend along a diameter of the cylindrical wall 12 and which make it possible, if necessary, to suspend the cylindrical wall 12. , the implementation of more than two structural members may then be necessary, to support precisely the cylindrical wall 12.
  • the piston 14 is retained by a line 32 formed of a chain which extends from a loop of hooking 34 of the piston 14 substantially along the axis of symmetry A out to the outside of the cylindrical wall 12 through a passageway 36 formed at the intersection of the structural members 28, 30.
  • means retaining means formed of four rods 38, 40, 42, 44, mounted facing each other in pairs and pivoted on the two structural members 28, 30 and which are adapted to grip at a point located on the axis of symmetry A, the c hain 32, allow to lock it in translation towards the lower suction end 24. In this way, the piston 14 is then kept suspended inside the cylindrical wall 12.
  • the four links 38, 40, 42, 44 are adapted to release said chain 32 to allow the rise of the piston 14 to the upper end of the water inlet 26.
  • the rods 38, 40, 42, 44 can be controlled by own means not shown or by means of an underwater robot.
  • the piston 14 has a bore 46 which communicates the lower suction chamber 20 and the chamber opposite upper 22, this bore forming duct 46 is surmounted by pumping means not shown on this figure 1 .
  • FIG. 2 in addition to the suction stack 10 found, is schematically a seabed 50 and the opposite, a surface 52 corresponding to a certain height of water 54 which is dipped in the suction stack 10.
  • the suction stack 10 is thus in support vertically on the seabed 50 via its lower suction end 24 which is directly in contact with the sediments of the seabed 50.
  • the piston 14 is then brought to a first height h1 which separates it from the seabed 50 via the chain 32 which is blocked by means of the retaining means 38, 40, 42, 44 of which only the rods 38 and 40 appear in the figure.
  • This first height h1 corresponds to a water depth H below the surface 52, at which height of water H, the hydrostatic pressure is sufficiently large.
  • the upper end of the water inlet 26 allows the water to fill the opposite upper chamber 22 in such a way that the piston 14 is subjected to the hydrostatic pressure which prevails near the seabed 50 and which corresponds to the said water height H.
  • This hydrostatic pressure is obviously decreasing from the seabed 50 to the surface 52.
  • the hydrostatic pressure that prevails near the seabed 50 induces E forces on the piston 14 which s' in one direction, oriented from the surface 52 towards the seabed 50, and which are transmitted to the cylindrical wall 12 via the chain 32, retaining means 38, 40, 42, 44 and structural members 28, 30 ..
  • the piston locking means 14 are formed by locks movably mounted on the piston and which engage in holes made in the surface internal 18 of the wall cy 12. In this way, said mobile locks are adapted to lock the piston 14 in translation relative to the cylindrical wall 12.
  • the duct-forming bore 46 is here equipped with pumping means 56 which make it possible to draw the water contained in the lower suction chamber 20 to discharge it into the upper chamber 22 and to create a depression in the suction chamber. 20 to cause depression of the lower suction end 24 in the seabed 50.
  • This depression is greatly accelerated by the efforts E which are exerted on the piston 14 and therefore on the cylindrical wall 12 along the axis of symmetry A and towards the seabed 50.
  • the bore 46 forming the conduit is released so as to allow water to enter the suction chamber 20.
  • the retaining means 38, 40, 42, 44 are locked again to lock the chain 32 in translation, as illustrated in FIG. figure 5 .
  • the piston 14 is then locked again in translation towards the seabed 50 relative to the cylindrical body 12.
  • the piston 14 can again be reassembled for a new suction operation. This can be done until the total insertion of the cylindrical wall 12 into the seabed 50. The piston 14 will then be located near the upper inlet end 26.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Reciprocating Pumps (AREA)
  • Manipulator (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Foundations (AREA)
  • Saccharide Compounds (AREA)
EP07803873A 2006-07-27 2007-07-16 Pile de succion adaptee aux faibles profondeurs Not-in-force EP2049388B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606882A FR2904336B1 (fr) 2006-07-27 2006-07-27 Pile de succion adaptee aus faibles profondeurs
PCT/FR2007/001213 WO2008012414A2 (fr) 2006-07-27 2007-07-16 Pile de succion adaptee aux faibles profondeurs

Publications (2)

Publication Number Publication Date
EP2049388A2 EP2049388A2 (fr) 2009-04-22
EP2049388B1 true EP2049388B1 (fr) 2011-01-19

Family

ID=37847032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803873A Not-in-force EP2049388B1 (fr) 2006-07-27 2007-07-16 Pile de succion adaptee aux faibles profondeurs

Country Status (10)

Country Link
US (1) US8021082B2 (ru)
EP (1) EP2049388B1 (ru)
AT (1) ATE495969T1 (ru)
AU (1) AU2007279162B2 (ru)
BR (1) BRPI0715476A2 (ru)
DE (1) DE602007012112D1 (ru)
EA (1) EA014442B1 (ru)
ES (1) ES2359177T3 (ru)
FR (1) FR2904336B1 (ru)
WO (1) WO2008012414A2 (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014174366A1 (en) * 2013-04-23 2014-10-30 Technip France A Method of Installing Pin Piles into a Seabed
KR20150009780A (ko) 2013-07-17 2015-01-27 현대건설주식회사 내부지지대를 구비하는 석션파일, 석션파일 어셈블리 및 이를 이용한 해상풍력발전시설

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2387366B1 (es) * 2009-12-11 2013-04-26 Grupo De Ingenieria Oceanica S.L. Plataforma de medidas para su instalacion en el agua
NO332121B1 (no) * 2010-11-09 2012-07-02 Aker Subsea As Havbunnsanker
WO2012098148A1 (en) * 2011-01-18 2012-07-26 Statkraft Development As Off-shore dam for energy storage, method of building such a dam from a plurality of construction elements and construction element as such
CN102897287B (zh) * 2012-10-26 2014-09-10 朱元康 重力摆式垂直锚
NO336247B1 (no) 2013-09-30 2015-06-29 Fmc Kongsberg Subsea As sugeanker
US9221522B2 (en) 2014-01-07 2015-12-29 Austin Theodore Mohrfeld Vent cap system for a suction pile
AU2015241519B2 (en) 2014-04-04 2016-09-29 Exxonmobil Upstream Research Company Coring system and method
US9458595B2 (en) 2014-09-26 2016-10-04 Austin MOHRFELD Heavy duty vent cap system for a suction pile
US9789932B2 (en) * 2015-11-25 2017-10-17 Cameron International Corporation System and method for installing suction piles
US9869071B1 (en) 2016-10-08 2018-01-16 Austin T. Mohrfeld Method for installing a pile
CN108222058B (zh) * 2018-02-14 2023-07-14 天津大学 一种具有可调式防屈曲装置的筒型基础及其施工方法
CN108423123A (zh) * 2018-04-04 2018-08-21 合肥学院 一种可双向展开的吸力贯入式锚泊基础
CN108396769A (zh) * 2018-05-18 2018-08-14 阳光学院 一种管桩
CN110106906B (zh) * 2019-05-08 2021-03-23 东南大学 一种顶部闭口式钢管桩
GB2584902B (en) * 2019-06-21 2022-05-04 Subsea 7 Norway As Hollow subsea foundations
NL2023942B1 (en) * 2019-10-02 2021-06-11 Spt Equipment Bv Eccentric suction pile pump with hinged lift appliance.
CN111648392B (zh) * 2020-03-30 2021-07-13 山东大学 一种用于海洋工程的桶形基础结构及安装方法
CN111456687B (zh) * 2020-04-08 2021-12-14 中国石油天然气集团有限公司 一种适合于海洋水合物开采的多筒协调自平衡井口支撑装置
CN111456688B (zh) * 2020-04-08 2021-11-09 中国石油大学(华东) 一种适合于海洋水合物开采的多锚管自适应井口支撑平台
US11136092B1 (en) * 2020-07-31 2021-10-05 James Mohrfeld Vent cap system
CN115288135B (zh) * 2022-09-14 2024-06-28 浙江交工集团股份有限公司 一种水压法沉桩结构及其施工方法
EP4339377A1 (de) * 2022-09-16 2024-03-20 BAUER Spezialtiefbau GmbH Pfahlrohr und verfahren zum bilden eines gründungspfahles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH299642A (fr) * 1953-12-24 1954-06-30 Silli Sezai Procédé et installation pour la construction de piles de ponts.
US4575282A (en) * 1984-06-04 1986-03-11 Pardue Sr James H System for driving open end pipe piles on the ocean floor using pneumatic evacuation and existing hydrostatic pressure
AU757367B2 (en) 1998-04-02 2003-02-20 Suction Pile Technology B.V. Marine structure
DE10324161A1 (de) * 2003-05-25 2004-12-16 Jens Schupp Vorrichtung zur Verbesserung des Tragverhaltens submariner Gründungen und Verankerungen mit Hilfe einer aktiven Drainage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014174366A1 (en) * 2013-04-23 2014-10-30 Technip France A Method of Installing Pin Piles into a Seabed
US9587766B2 (en) 2013-04-23 2017-03-07 Technip France Method of installing pin piles into a seabed
AU2014259119B2 (en) * 2013-04-23 2017-07-06 Technip France A method of installing pin piles into a seabed
KR20150009780A (ko) 2013-07-17 2015-01-27 현대건설주식회사 내부지지대를 구비하는 석션파일, 석션파일 어셈블리 및 이를 이용한 해상풍력발전시설

Also Published As

Publication number Publication date
FR2904336A1 (fr) 2008-02-01
EA200900231A1 (ru) 2009-08-28
BRPI0715476A2 (pt) 2013-03-19
DE602007012112D1 (de) 2011-03-03
WO2008012414A3 (fr) 2008-04-03
ES2359177T3 (es) 2011-05-19
AU2007279162A1 (en) 2008-01-31
US8021082B2 (en) 2011-09-20
AU2007279162B2 (en) 2012-02-23
WO2008012414A2 (fr) 2008-01-31
US20100021241A1 (en) 2010-01-28
ATE495969T1 (de) 2011-02-15
EA014442B1 (ru) 2010-12-30
FR2904336B1 (fr) 2008-09-26
EP2049388A2 (fr) 2009-04-22

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