WO1995020075A1 - Method and apparatus for installing a hollow suction pile in the bottom of a body of water - Google Patents

Method and apparatus for installing a hollow suction pile in the bottom of a body of water Download PDF

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Publication number
WO1995020075A1
WO1995020075A1 PCT/NL1995/000027 NL9500027W WO9520075A1 WO 1995020075 A1 WO1995020075 A1 WO 1995020075A1 NL 9500027 W NL9500027 W NL 9500027W WO 9520075 A1 WO9520075 A1 WO 9520075A1
Authority
WO
WIPO (PCT)
Prior art keywords
pile
interior
vessel
pressure
suction pile
Prior art date
Application number
PCT/NL1995/000027
Other languages
French (fr)
Inventor
Johannes Rudolf Hogervorst
Original Assignee
Johannes Rudolf Hogervorst
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 Johannes Rudolf Hogervorst filed Critical Johannes Rudolf Hogervorst
Priority to AU14268/95A priority Critical patent/AU1426895A/en
Priority to NL9520005A priority patent/NL194169C/en
Priority to GB9614428A priority patent/GB2300661B/en
Priority to BR9506637A priority patent/BR9506637A/en
Publication of WO1995020075A1 publication Critical patent/WO1995020075A1/en
Priority to NO962876A priority patent/NO962876L/en

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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • 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
    • E02B2017/0078—Suction piles, suction cans
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0053—Production methods using suction or vacuum techniques

Definitions

  • the invention relates to a method for installing a hollow suction pile in the bottom of a body of water, in which the pile is lowered onto the bottom, the pressure inside the pile is reduced, causing the pile to penetrate the bottom and a column of soil material to penetrate the interior of the pile.
  • a method of this type is known from the European patent specification 0 Oil 894.
  • the pressure inside the pile is reduced by continuously evacuating water from the interior of the pile, using a pump connected to the suction pile, until the pile has penetrated the bottom to the required depth.
  • Drawbacks of this known method are that, with certain soil types or compositions, it is possible that as a result of the reduced pressure inside the pile, there is an inflow of water into the interior of the pile passing via the bottom and under the lower rim of the pile and/or that soil upheavel inside the pile occurs due to the internal rupture along interfaces.
  • the under-pressure created inside the suction pile is partly nullified, and in the second case soil upheavel results in soil finding its way into the pump, which becomes silted up.
  • the present invention aims at a method for installing a hollow suction pile in a body of water, in which these drawbacks do not occur.
  • This aim is achieved by means of a method of the type mentioned at the beginning, which is characterized by the steps of: a) creating an under-pressure in a room separate from the pile (1) b) bringing the separate room with under-pressure in connection with the interior (6) of the pile (1) , causing a shockwise reduction of the pressure in the interior of the pile, c) after closing the connection between the separate room and the interior of the pile, repeating the steps a) and b) a number of times until the pile (1) has penetrated the bottom to the required depth.
  • the shockwise reduction of pressure inside the pile prevents water inflow to the interior of the pile via the bottom and under lower rim of the pile. With each shockwise reduction of the pressure in the interior of the pile, the pile will, as a result of the overpressure exerted on the pile head, be driven into the bottom over a certain lenght without occurrence of soil rupture along interfaces.
  • the invention also relates to apparatus for carrying out the method according to the invention, which apparatus is characterized by comprising at least one vessel, a connection pipe between the vessel and the suction pile for connecting the interior of the vessel with the interior of the suction pile, a first valve for closing and opening the connection pipe, and a means for creating an under-pressure in the interior of the vessel.
  • the invention further relates to a suction pile as defined in claim 11.
  • Fig. 1 shows very schematically in longitudinal section a suction pile which has partly penetrated the bottom of a body of water, and with an apparatus for driving the suction pile into the bottom mounted thereon.
  • Fig. 2 shows schematically a certain embodiment of an apparatus according to the invention for driving the suction pile into the bottom, mounted on a suction pile,
  • Fig. 3 is a top view of the apparatus of fig. 2, and Fig. 4 shows schematically another embodiment of apparatus according to the invention.
  • Fig. 1 shows very schematically a suction pile 1, which has partly penetrated a bottom 2 under a watersurface 10.
  • the suction pile 1 consists of a tubular body 3, which is closed at the top by a cap 4 and provided at the bottom with a cutting edge 5 to facilitate driving into the bottom.
  • a suction pile of this type is driven into the bottom 2 by reducing the pressure in the interior 6 of the suction pile 1 by evacuating water from it.
  • the driving-in operation can be carried out with a very schematically shown apparatus 7 , which is in connection with the interior 6 of the suction pile 1 via a pipe 8.
  • the apparatus 7, which is preferably constructed as a unit, is connected with a hoisting cable 9 with which the apparatus 7, whether or not in combination with the suction pile 1, which is detachably connected to the apparatus 7, is lowered from a boat or barge and with which the apparatus 7, after driving the suction pile 1 into the bottom 2, is lifted again.
  • Figs. 2 and 3 show in more detail a certain embodiment of the apparatus 7 for driving a suction pile 1 into the bottom 2 of a body of water, mounted on a suction pile 1.
  • the apparatus 7 comprises in the embodiment shown three vessels 11 and a pump 12. Each of the vessels 11 is via a connection pipe 13 in connection with a chamber 14 at the suction side of the pump 12. Via the chamber 14 the connection pipes 13 are in connection with the pipe 8, which runs to the interior 6 of the suction pile 1.
  • a first valve 15 is installed, with which the pipe 8 can be closed or opened.
  • the pump 12 is furthermore provided with an outlet 16, in which a second valve 17 is installed for closing and opening the outlet 16.
  • Each vessel 11 is provided at the top with an opening 19 which can be closed by a third valve 18, via which opening the interior of the vessel 11 can be brought into direct connection with the environment.
  • the apparatus is further provided with a control and connection box 20 in which means (not further shown) for controlling the various valves and the pump 12 have been accommodated.
  • the various lines for energy supply and control are not further shown in the drawing.
  • the hoisting cable 9, in which also a supply line can be integrated, is connected with the control and connection box 20.
  • the apparatus 7 is connected with the suction pile 1 with the aid of three cables 21, which run from the bottom of the control and connection box 20 to three points 22, distributed over the circumference of the suction pile 1.
  • the connection of the three cables 21 with a suspension lug 23 at the bottom of the control and connection box 20 can be uncoupled.
  • the apparatus 7 can furthermore be surrounded by a protection cage (not further shown here) .
  • the working procedure is as follows. After on a boat or barge (not shown here) the apparatus 7 has been connected by means of cables 21 with the suction pile 1, whereby a towards the environment closed connection pipe 8 between the apparatus 7 and the interior 6 of the suction pile 1 has been achieved, and the hoisting cable 9 is connected with the control and connection box 20, the whole unit is lowered from the boat or barge. During lowering all valves 15, 16 and 18 are open, until the cap 4 of the suction pile 1 is under water. Subsequently all valves 15, 16 and 18 are closed. The vessels 11 are at this stage still filled with air and function during further lowering of the unit as a buoy for stabilizing the suction pile 1.
  • Fig. 4 shows another embodiment of the apparatus 7 according to the invention.
  • the embodiment of fig. 4 differs from that of figs. 2 and 3 in that in this embodiment only one vessel 11 is applied and the pump 12 is located inside this vessel. This gives some differences in construction.
  • the vessel 11 is mounted direct on the suction pile 1, whereby the connection 8 is realized.
  • the cables 21 extend from the connection points 22 with the suction pile 1 to connection points 24 which have been provided at the top of the vessel 11, distributed over its circumference. Near the connection points 24, detachable couplings 25 have been provided between these connection points and the cables 21.
  • the pump 12 is mounted inside the vessel 11 in a tube 26 running from the bottom to the top of the vessel 11.
  • the tube 26 links up at the bottom with the connection pipe 8 and is near the bottom provided with openings 27, through which the interior of the vessel is in connection with the suction side of the pump 12.
  • the top end of the tube 26 is in connection with the environment and thus forms the outlet 16 of the pump 12.
  • a second valve 17 has been incorporated in the outlet 16.
  • the vessel 11 is provided at the top with an opening 19 which can be closed with a third valve 18.
  • the control and connection box 20 is mounted on top of the vessel 11 via an intermediate part 29, provided with openings 28.
  • the suction pile can be extracted from the bottom by means of an apparatus (not shown) which can be connected to the opening at the top of the suction pile and which is adapted to increase the pressure in the interior of the pile.
  • an apparatus can be mounted on the suction pile in the same way as the apparatus for driving the pile into the bottom.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

During the installation of a hollow suction pile (1) in the bottom of a body of water, the pile is lowered onto the bottom and the pressure in the interior (6) of the pile (1) is reduced shockwise a number of times until the pile (1) has penetrated the bottom (2) to the required depth. For the shockwise reduction of the pressure, the interior (6) of the pile (1) is brought into connection with a room wherein an under-pressure has been created, the room forming part of an apparatus (7) which is mounted on the hollow pile (1). The relevant room is subjected to an under-pressure by closing it and evacuating the water present therein by pumping.

Description

, Method and apparatus for installing a hollow suction pile in the bottom of a body of water.
The invention relates to a method for installing a hollow suction pile in the bottom of a body of water, in which the pile is lowered onto the bottom, the pressure inside the pile is reduced, causing the pile to penetrate the bottom and a column of soil material to penetrate the interior of the pile.
A method of this type is known from the European patent specification 0 Oil 894. In this known method the pressure inside the pile is reduced by continuously evacuating water from the interior of the pile, using a pump connected to the suction pile, until the pile has penetrated the bottom to the required depth. Drawbacks of this known method are that, with certain soil types or compositions, it is possible that as a result of the reduced pressure inside the pile, there is an inflow of water into the interior of the pile passing via the bottom and under the lower rim of the pile and/or that soil upheavel inside the pile occurs due to the internal rupture along interfaces. In the first case the under-pressure created inside the suction pile is partly nullified, and in the second case soil upheavel results in soil finding its way into the pump, which becomes silted up.
The present invention aims at a method for installing a hollow suction pile in a body of water, in which these drawbacks do not occur.
This aim is achieved by means of a method of the type mentioned at the beginning, which is characterized by the steps of: a) creating an under-pressure in a room separate from the pile (1) b) bringing the separate room with under-pressure in connection with the interior (6) of the pile (1) , causing a shockwise reduction of the pressure in the interior of the pile, c) after closing the connection between the separate room and the interior of the pile, repeating the steps a) and b) a number of times until the pile (1) has penetrated the bottom to the required depth.
The shockwise reduction of pressure inside the pile prevents water inflow to the interior of the pile via the bottom and under lower rim of the pile. With each shockwise reduction of the pressure in the interior of the pile, the pile will, as a result of the overpressure exerted on the pile head, be driven into the bottom over a certain lenght without occurrence of soil rupture along interfaces.
The invention also relates to apparatus for carrying out the method according to the invention, which apparatus is characterized by comprising at least one vessel, a connection pipe between the vessel and the suction pile for connecting the interior of the vessel with the interior of the suction pile, a first valve for closing and opening the connection pipe, and a means for creating an under-pressure in the interior of the vessel.
Preferred embodiments of the method and apparatus according to the invention are laid down in the claims 2 and 3 to 10, respectively.
The invention further relates to a suction pile as defined in claim 11.
The invention is explained further in the following example of embodiment with reference to the enclosed drawing, in which:
Fig. 1 shows very schematically in longitudinal section a suction pile which has partly penetrated the bottom of a body of water, and with an apparatus for driving the suction pile into the bottom mounted thereon. Fig. 2 shows schematically a certain embodiment of an apparatus according to the invention for driving the suction pile into the bottom, mounted on a suction pile,
Fig. 3 is a top view of the apparatus of fig. 2, and Fig. 4 shows schematically another embodiment of apparatus according to the invention. Fig. 1 shows very schematically a suction pile 1, which has partly penetrated a bottom 2 under a watersurface 10. The suction pile 1 consists of a tubular body 3, which is closed at the top by a cap 4 and provided at the bottom with a cutting edge 5 to facilitate driving into the bottom. A suction pile of this type is driven into the bottom 2 by reducing the pressure in the interior 6 of the suction pile 1 by evacuating water from it. The driving-in operation can be carried out with a very schematically shown apparatus 7 , which is in connection with the interior 6 of the suction pile 1 via a pipe 8. By reducing the pressure in the interior 6 of the suction pile 1, a pressure difference is created between the interior 6 of the suction pile 1 and the watermass surrounding the suction pile, causing a downwards force on the cap 4, which drives the suction pile 1 into the bottom 2. The apparatus 7, which is preferably constructed as a unit, is connected with a hoisting cable 9 with which the apparatus 7, whether or not in combination with the suction pile 1, which is detachably connected to the apparatus 7, is lowered from a boat or barge and with which the apparatus 7, after driving the suction pile 1 into the bottom 2, is lifted again.
Figs. 2 and 3 show in more detail a certain embodiment of the apparatus 7 for driving a suction pile 1 into the bottom 2 of a body of water, mounted on a suction pile 1. The apparatus 7 comprises in the embodiment shown three vessels 11 and a pump 12. Each of the vessels 11 is via a connection pipe 13 in connection with a chamber 14 at the suction side of the pump 12. Via the chamber 14 the connection pipes 13 are in connection with the pipe 8, which runs to the interior 6 of the suction pile 1. In the pipe 8 a first valve 15 is installed, with which the pipe 8 can be closed or opened.
The pump 12 is furthermore provided with an outlet 16, in which a second valve 17 is installed for closing and opening the outlet 16. Each vessel 11 is provided at the top with an opening 19 which can be closed by a third valve 18, via which opening the interior of the vessel 11 can be brought into direct connection with the environment.
The apparatus is further provided with a control and connection box 20 in which means (not further shown) for controlling the various valves and the pump 12 have been accommodated. The various lines for energy supply and control are not further shown in the drawing. The hoisting cable 9, in which also a supply line can be integrated, is connected with the control and connection box 20.
The apparatus 7 is connected with the suction pile 1 with the aid of three cables 21, which run from the bottom of the control and connection box 20 to three points 22, distributed over the circumference of the suction pile 1. The connection of the three cables 21 with a suspension lug 23 at the bottom of the control and connection box 20 can be uncoupled.
The apparatus 7 can furthermore be surrounded by a protection cage (not further shown here) .
During installation of the hollow suction pile 1 in the bottom 2 of a body of water with the aid of the apparatus 7 according to the invention the working procedure is as follows. After on a boat or barge (not shown here) the apparatus 7 has been connected by means of cables 21 with the suction pile 1, whereby a towards the environment closed connection pipe 8 between the apparatus 7 and the interior 6 of the suction pile 1 has been achieved, and the hoisting cable 9 is connected with the control and connection box 20, the whole unit is lowered from the boat or barge. During lowering all valves 15, 16 and 18 are open, until the cap 4 of the suction pile 1 is under water. Subsequently all valves 15, 16 and 18 are closed. The vessels 11 are at this stage still filled with air and function during further lowering of the unit as a buoy for stabilizing the suction pile 1.
As soon as the pile 1 touches the bottom 2 with the lower rim 5, all valves are opened again. The air present in the vessels 11 will escape via the openings 19, while water will enter the vessels 11. The pile 1 will then penetrate the bottom 2 over a certain length under its own weight.
Then the valves 15 and 18 are closed and the pump
Figure imgf000007_0001
Fig. 4 shows another embodiment of the apparatus 7 according to the invention. For parts which correspond with parts of the apparatus shown in figure 2 and 3 the same reference numbers have been used. The embodiment of fig. 4 differs from that of figs. 2 and 3 in that in this embodiment only one vessel 11 is applied and the pump 12 is located inside this vessel. This gives some differences in construction.
The vessel 11 is mounted direct on the suction pile 1, whereby the connection 8 is realized. The cables 21 extend from the connection points 22 with the suction pile 1 to connection points 24 which have been provided at the top of the vessel 11, distributed over its circumference. Near the connection points 24, detachable couplings 25 have been provided between these connection points and the cables 21.
The pump 12 is mounted inside the vessel 11 in a tube 26 running from the bottom to the top of the vessel 11. The tube 26 links up at the bottom with the connection pipe 8 and is near the bottom provided with openings 27, through which the interior of the vessel is in connection with the suction side of the pump 12. The top end of the tube 26 is in connection with the environment and thus forms the outlet 16 of the pump 12. Here, too, a second valve 17 has been incorporated in the outlet 16.
Furthermore the vessel 11 is provided at the top with an opening 19 which can be closed with a third valve 18.
The control and connection box 20 is mounted on top of the vessel 11 via an intermediate part 29, provided with openings 28.
The operation of the apparatus 7 of fig. 4 is the same as of the apparatus of figs. 2 and 3.
It will be clear that also embodiments of the apparatus according to the invention with another number (two, four or more) of vessels 11 are possible.
It is also possible to connect the pump to the vessel or vessels in another way.
Also, other means for creating an under-pressure in the vessel or vessels can be used.
The suction pile can be extracted from the bottom by means of an apparatus (not shown) which can be connected to the opening at the top of the suction pile and which is adapted to increase the pressure in the interior of the pile. Such an apparatus can be mounted on the suction pile in the same way as the apparatus for driving the pile into the bottom.

Claims

1. Method for installing a hollow pile in the bottom of a body of water, in which the pile is lowered onto the bottom, the pressure inside the pile is reduced, causing the pile to penetrate the bottom, and a column of bottom material to penetrate the interior of the pile, characterized by the steps of: a) creating an under-pressure in a room separate from the pile (1), b) bringing the separate room with under-pressure in connection with the interior (6) of the pile (1) , causing a shockwise reduction of the pressure in the interior of the pile, c) after closing the connection between the separate room and the interior of the pile, repeating the steps a) and b) a number of times until the pile (1) has penetrated the bottom to the required depth.
2. Method according to claim 1, characterized in that the under-pressure in the separate room is created by closing the room and pumping out the water present therein.
3. Apparatus for driving a suction pile into the bottom of a body of water, which apparatus can be applied in the method of claims 1 and 2, characterized by comprising at least one vessel (11) , a connection pipe (8, 13) between the vessel and the suction pile (1) for connecting the interior of the vessel (11) with the interior (6) of the suction pile (1) , a first valve (15) for closing and opening the connection pipe (8, 13), and a means for creating an under-pressure in the interior of the vessel (11) .
4. Apparatus according to claim 3, characterized in that the means for creating an under-pressure in the vessel (11) comprises a pump (12) which can be brought in connection with the interior of the vessel (11) for emptying the vessel (11) , and a second valve (17) for closing a connection channel running via the pump (12) between the interior of the vessel and the environment.
5. Apparatus according to claim 4, characterized by comprising means (20) for controlling the valves (15, 17) and the pumps (12) .
6. Apparatus according to one of claims 3 - 5, characterized in that each vessel (11) is provided at the top with an opening (19) capable of being closed by a third valve (18) through which opening (19) the interior of the vessel (11) can be brought into direct connection with the environment.
7. Apparatus according to one of claims 3 - 6, characterized in that the apparatus is constructed as a unit (7) to which a suction pile (1) can be suspended or mounted.
8. Apparatus according to claim 7, charcterized in that the unit (7) can be connected with the suction pile by means of a detachable coupling (21, 22, 23, 25).
9. Apparatus according to claim 7 or 8, characterized in that the unit (7) is provided with means for attaching a hoisting cable (9) to it.
10. Apparatus according to one of the claims 3 - 9, characterized in that the apparatus is surrounded by a protection cage.
11. Hollow suction pile, characterized in that the suction pile (1) is closed at the top with a cap (4) in which an opening has been provided for connecting the interior (6) of the suction pile (1) with a first apparatus for driving the suction pile (1) into the bottom of a body of water by shockwise reducing the pressure in the interior (6) of the suction pile (1) , or for connecting the interior (6) of the suction pile (1) with a second apparatus for extracting the pile (1) from the bottom by increasing the pressure in the interior (6) of the pile (1) , said suction pile (1) being adapted to be connected to or disconnected from the first or second apparatus under water with the aid of a diver or a remotely controlled underwater apparatus.
PCT/NL1995/000027 1994-01-21 1995-01-18 Method and apparatus for installing a hollow suction pile in the bottom of a body of water WO1995020075A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU14268/95A AU1426895A (en) 1994-01-21 1995-01-18 Method and apparatus for installing a hollow suction pile in the bottom of a body of water
NL9520005A NL194169C (en) 1994-01-21 1995-01-18 Method and device for installing a hollow suction pole in the bottom of a water.
GB9614428A GB2300661B (en) 1994-01-21 1995-01-18 Method and combination for installing a hollow suction pile in the bottom of a body of water
BR9506637A BR9506637A (en) 1994-01-21 1995-01-18 Process and apparatus for installing a hollow suction pile at the bottom of a body of water
NO962876A NO962876L (en) 1994-01-21 1996-07-08 Method and apparatus for installing a hollow suction pile at the bottom of a water body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9400101 1994-01-21
NL9400101A NL9400101A (en) 1994-01-21 1994-01-21 Method and device for installing a hollow suction pole in the bottom of a water.

Publications (1)

Publication Number Publication Date
WO1995020075A1 true WO1995020075A1 (en) 1995-07-27

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PCT/NL1995/000027 WO1995020075A1 (en) 1994-01-21 1995-01-18 Method and apparatus for installing a hollow suction pile in the bottom of a body of water

Country Status (7)

Country Link
AU (1) AU1426895A (en)
BR (1) BR9506637A (en)
GB (1) GB2300661B (en)
NL (2) NL9400101A (en)
NO (1) NO962876L (en)
OA (1) OA10370A (en)
WO (1) WO1995020075A1 (en)

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GB2307708A (en) * 1995-11-29 1997-06-04 Deep Oil Technology Inc Deep water piling and methods of installing or removing
WO1998046833A1 (en) * 1997-04-02 1998-10-22 Olav Hamre Position penetrated anchor system
GB2325017A (en) * 1997-03-26 1998-11-11 Chevron Usa Inc Installation of a foundation pile in a subsurface soil
WO1998052819A1 (en) * 1997-05-21 1998-11-26 Norsk Hydro Asa Device for the implementation of an anchor into the sea bottom
WO1999051821A1 (en) * 1998-04-02 1999-10-14 Suction Pile Technology B.V. Marine structure
GB2342112A (en) * 1998-09-02 2000-04-05 John Stephen Baross Apparatus for installing a suction pile
WO2000023660A1 (en) * 1998-10-20 2000-04-27 Duggan Marine Equipment Limited A method and apparatus for underwater piledriving
US6273645B1 (en) 1997-04-02 2001-08-14 Olav Hamre Position penetrated anchor system
US6481932B1 (en) 1999-11-18 2002-11-19 Suction Pile Technology B.V. Marine structure
US6719496B1 (en) 1997-11-01 2004-04-13 Shell Oil Company ROV installed suction piles
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WO2021071361A1 (en) 2019-10-09 2021-04-15 Spt Equipment Bv Simultaneous servicing a group of suction buckets.
NL2028088B1 (en) 2020-04-29 2022-06-03 Spt Equipment Bv Concrete connector body for an offshore wind turbine.
CN114228907B (en) * 2021-12-28 2022-11-22 中国石油大学(华东) Vacuum fish-and-thunder anchor capable of solidifying soil body and installation method thereof

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GB2307708B (en) * 1995-11-29 2000-03-08 Deep Oil Technology Inc Deep water piling and methods of installing
GB2307708A (en) * 1995-11-29 1997-06-04 Deep Oil Technology Inc Deep water piling and methods of installing or removing
GB2325017B (en) * 1997-03-26 2001-08-29 Chevron Usa Inc Installation of a foundation pile in a subsurface soil
GB2325017A (en) * 1997-03-26 1998-11-11 Chevron Usa Inc Installation of a foundation pile in a subsurface soil
AU739170B2 (en) * 1997-03-26 2001-10-04 Chevron U.S.A. Inc. Installation of a foundation pile in a subsurface soil
US6273645B1 (en) 1997-04-02 2001-08-14 Olav Hamre Position penetrated anchor system
WO1998046833A1 (en) * 1997-04-02 1998-10-22 Olav Hamre Position penetrated anchor system
WO1998052819A1 (en) * 1997-05-21 1998-11-26 Norsk Hydro Asa Device for the implementation of an anchor into the sea bottom
AU734658B2 (en) * 1997-05-21 2001-06-21 Norsk Hydro Asa Device for the implementation of an anchor into the sea bottom
US6719496B1 (en) 1997-11-01 2004-04-13 Shell Oil Company ROV installed suction piles
US6488446B1 (en) 1998-04-02 2002-12-03 Suction Pile Technology Bv Marine structure
WO1999051821A1 (en) * 1998-04-02 1999-10-14 Suction Pile Technology B.V. Marine structure
GB2342112A (en) * 1998-09-02 2000-04-05 John Stephen Baross Apparatus for installing a suction pile
WO2000023660A1 (en) * 1998-10-20 2000-04-27 Duggan Marine Equipment Limited A method and apparatus for underwater piledriving
US6481932B1 (en) 1999-11-18 2002-11-19 Suction Pile Technology B.V. Marine structure
CN103603364A (en) * 2013-11-13 2014-02-26 上海利策科技股份有限公司 Deepwater suction-type gravity foundation and deepwater mounting device and deepwater mounting method thereof
EP3012183A1 (en) * 2014-10-24 2016-04-27 HAB Hallen- und Anlagenbau GmbH Suction anchor
EP3315670A3 (en) * 2016-04-13 2019-03-20 SPT Equipment BV Suction pile pump device
NO20211500A1 (en) * 2021-12-14 2023-06-15 Subsea 7 Norway As Installation and removal of subsea foundations
GB2613802A (en) * 2021-12-14 2023-06-21 Subsea 7 Norway As Installation and removal of subsea foundations
WO2023111080A1 (en) 2021-12-14 2023-06-22 Subsea 7 Norway As Installation and removal of subsea foundations
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Also Published As

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GB2300661A (en) 1996-11-13
GB2300661B (en) 1997-07-30
NL9400101A (en) 1995-09-01
BR9506637A (en) 1997-09-16
GB9614428D0 (en) 1996-09-04
OA10370A (en) 2001-11-20
NO962876D0 (en) 1996-07-08
NL194169B (en) 2001-04-02
NO962876L (en) 1996-07-08
NL194169C (en) 2001-08-03
AU1426895A (en) 1995-08-08
NL9520005A (en) 1996-11-01

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