[go: up one dir, main page]

WO2004009434A1 - Appareil d'installation pour le plancher oceanique - Google Patents

Appareil d'installation pour le plancher oceanique Download PDF

Info

Publication number
WO2004009434A1
WO2004009434A1 PCT/GB2003/003172 GB0303172W WO2004009434A1 WO 2004009434 A1 WO2004009434 A1 WO 2004009434A1 GB 0303172 W GB0303172 W GB 0303172W WO 2004009434 A1 WO2004009434 A1 WO 2004009434A1
Authority
WO
WIPO (PCT)
Prior art keywords
anchor
soil penetration
penetration means
line
deployment
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.)
Ceased
Application number
PCT/GB2003/003172
Other languages
English (en)
Inventor
Philip Head
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB0217059A external-priority patent/GB0217059D0/en
Priority claimed from GB0224410A external-priority patent/GB0224410D0/en
Application filed by Individual filed Critical Individual
Priority to AU2003254482A priority Critical patent/AU2003254482A1/en
Priority to US10/523,137 priority patent/US20060118309A1/en
Publication of WO2004009434A1 publication Critical patent/WO2004009434A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the present invention relates to a seabed installation apparatus and methods for its deployment from a vessel.
  • the installation may be used for any purpose requiring the installation below the sea bed for example a mooring anchor for ships or other sea going vessels or alternatively it may be used for a means of locating probes or sensors at required depths in the sea bed. Other uses will be apparent to skilled persons.
  • a supply vessel tows the anchor, chains, and sometimes a polyester mooring line as far out from the rig as possible.
  • the anchor is then dropped, and when it has reached the seabed the rig uses winches to pull upon the anchor by the mooring line.
  • the anchor gets a grip and buries itself in the seabed under the weight of the chain and aided by the angles of the anchor's blades, however this process can be very laborious and time consuming.
  • Two opposing mooring lines have to be deployed before they can be tensioned and tested. If one anchor has failed to become embedded, it must be retrieved and re-laid. It can take a rig sometimes seven days or longer to achieve a secure mooring position.
  • a common known way of analysing the structure of formation structures below the seabed is to deploy one or more lines of sensors from a ship.
  • the sensor lines or 'streamers' trail behind the ship, and receive sound waves produced by a source transmitted and then reflected or emitted from the seabed, so that deductions of the structure and composition of the formation structure may be made. It is often desirable to cover a wide area in a single pass, so the lines have to be spread of the greatest width possible.
  • One way of doing this is to attach a common rigid bar, perpendicular to the sensor lines, to the trailing end of the streamers, and keep the spacing of the streamers as wide as possible at the stem of the ship. A large ship is necessary both to keep the lines widely spaced, and to accommodate the equipment associated with doing this.
  • arrays of cables are now installed onto the seabed.
  • a number of lines of cables containing sensors are deployed from the stern of a ship as previously, and allowed to settle upon the seabed.
  • These parallel lines of cables are connected at one end to a common perpendicular cable which includes a pick up point.
  • the seabed array is deployed in a similar way to the towed array, and again requires a large ship and much equipment to space the lines of sensors.
  • the invention also relates to an apparatus and method for deploying probes and sampling devices.
  • probes are deployed using so called push sampling techniques which require a dedicated or pre-existing casing into which a sampling device or probe is introduced. These sampling probes are then advanced into the casing to sample and test the formation at the lower end of the casing. Additional lengths of casing are required to reach lower depths in the formation. Drilling will usually be required before the casing can be installed. A derrick is required to deploy the casing lengths, and to deploy the sampling apparatus and its packing to the casing wall.
  • An object of the present invention to provide a form of seabed array and method of deployment of the same which is more efficient and convenient than the prior art methods.
  • a further object of the present invention is to provide a means for quickly and easily securing an anchor for a mooring line upon the seabed, with less chance that the anchor point will not be properly embedded.
  • a further object of the present invention is to provide a means of applying further operations to the anchor upon the seabed in order to ensure that it is more reliably secured.
  • a seabed installation apparatus comprising
  • the mooring line being releasably secured to the deployment line.
  • the mooring line is shorter than the deployment line.
  • the deployment line supplies power to the soil penetration means.
  • the deployment line is preferably releasably attached to the soil penetration means.
  • Fig 1 shows the apparatus contained on a vessel ready for deployment
  • Fig 2 shows a first stage of deployment of the apparatus of an embodiment of the invention being deployed from a vessel
  • Fig 3 shows a second stage of deployment of the apparatus of an embodiment of the invention being deployed from a vessel
  • Fig 4 shows a third stage of deployment of the apparatus of an embodiment of the invention being deployed from a vessel
  • Fig 5 shows a cross-sectional view of the support line
  • Figs 6a to 6c show further stages of the deployment of the apparatus
  • Fig 7 shows a further stage of the deployment of the apparatus
  • Figs. 8a shows a side elevation
  • fig 8b shows a plan view of the apparatus
  • Fig. 9 is a side elevation of the motor and gear box of Fig. 8a,
  • Figs. 10a and 10b are a view of a further embodiment of the invention being deployed
  • Figs. 11a, 1 lb and 1 lc are views of a further anchors
  • Fig 12 is a perspective view of a further embodiment of an anchor
  • Figs. 13a, 13b and 13c are views of a further embodiment of an anchor being installed in the seabed, and
  • Fig. 14 is a view of a further embodiment of the anchor and associated equipment being installed in the seabed.
  • Figs. 1 to 8 relate to the apparatus being used for the deployment of an anchor which would typically be used for mooring vessels and other marine structures, but it will be appreciated that the apparatus could correspondingly be applied to other seabed located devices such as sensing means for investigating the propertied of the sea bed.
  • the apparatus 15 is contained on a vessel 10 ready for deployment.
  • the apparatus is contained in a container or skid 13 which can be configured to match existing standard sizes.
  • a number of anchors 2 can be stowed within the skid 13.
  • Fig. 2 shows a first stage in the deployment of the anchor in which the skid container 13 splits and a top section 17 is rotated about a pivot 19 to pass through position a to vertical position b to provide a mast and working platform at the back of the vessel from which operators can lower the anchor deployment apparatus 2 is over the side of the vessel 10.
  • a collapsible control cabin 21 is erected and provided with electric or hydraulic power from which the operators can control the deployment of the deployment apparatus 2.
  • the anchor deployment apparatus 2 is supported by a support line 4 comprising braided wire or coiled tubing upon which it is lowered down into the water to the seabed, and also incorporating a power line. Heave compensation may be provided, for example, by the winch 29.
  • the anchor deployment apparatus 2 is also attached to a or forerunner 6
  • Fig. 3 shows the anchor deployment apparatus 2 being lowered down through the water to the sea bed.
  • the forerunner When the top of the anchor is just below the work deck, it is held in this position so that the forerunner can be attached to its attachment point on the top of the anchor.
  • the forerunner provides the link between the anchor and the mooring line which is attached when the rig or other item to be moored arrives on location.
  • a buoy 8 is slidably connected to the forerunner to help in its location and pick up at a later time. Once the shackle pin is secured, the winch line deploys the anchor and the forerunner over the back of the vessel, the forerunner can be any length; in this example it is 300 ft long.
  • the buoy 8 is attached to ensure the top 25-50 ft of forerunner is buoyant to ensure it can be easily found by a ROV (remote operated vessel).
  • the entire system is then lowered using the wire rope.
  • the wire rope may either contain electrical power cables or it may have a hydraulic line attached for powering an auger fitted to the bottom of the anchor. Since the wire rope 4 is heave compensated, the anchor moves smoothly to the seabed independently of the heave of the vessel.
  • the anchor deployment apparatus 2 is shown having reached the seabed 25 and the anchor device 2 has started to penetrate the seabed.
  • the forerunner 6 has been released from the vessel, some length remaining above the sea bed.
  • the forerunner 6 preferably includes a signal transmission means for transmitting a signal to signify its location.
  • the support line 4 comprises power cables 26 (preferably electric, though hydraulic could be used) arranged in a packed formation, surrounded by armoured braids 27 to protect the power cables and support the weight of the anchor device 2.
  • power cables 26 preferably electric, though hydraulic could be used
  • Figs 6a to 6c show the anchor deployment apparatus 2 in more detail.
  • the electric or hydraulic motor drives the auger tip via a gearbox, so very high torques will be possible at the auger, so that it has ability to penetrate a variety of materials.
  • the benefit of the electrical system is that the current demanded by the electric motor will be directly proportional to the torque required by the auger. This will be very helpful in determining the resistance of the soil nearby the anchor so once set the anchors holding capacity will be well understood.
  • It comprises an auger 14 arranged at the lower end which is driven by a motor 18 causing the auger to rum so driving the anchor deployment apparatus 2 into the sea bed.
  • the motor is powered by electric power provided by the cable 4.
  • the anchor deployment apparatus 2 also comprises flukes or fins 12 which may be extended or retracted by means of pivoting arms 16.
  • the auger quickly drives the anchor 2 down into the ground, the heave compensated supporting rope 4 is fed off at a steady rate as demanded by the auger.
  • the flukes 12 are in a retracted position during the penetration phase of the anchor deployment apparatus 2 into the sea bed.
  • the flukes 12 are activated and initially extended by the arms 16, as shown in figure 6b.
  • the turning direction of the motor 18 and hence the auger 14 is then reversed causing the anchor deployment apparatus 2 to retreat back upwardly.
  • This upwards movement causes the flukes to extend further by means of the drag of the surrounding earth until the flukes are fully extended.
  • the upward movement is then stopped and the flukes 12 in the fully extended position as shown in Fig. 6c provide the resistance to further upward movement and the desired anchoring force.
  • the torque that the auger is subjected to as it penetrates the earth is a very good indicator of the strength of the earth and the ability of the earth at that point to provide sufficient support for the anchor. This torque is directly measurable by the current that is supplied to the motor.
  • the auger 14 diameter is slightly larger than the outer diameter (OD) of the undeployed flukes 12 of the anchor.
  • the discharge from the auger is fed up inside the undeployed flukes 12 and exhausted above the anchor. If a hydraulic motor is used to power the auger the fluid outlet of the water driven hydraulic motor is directed into the auger exhaust flow to assist in the movement of the waste material and reduce the skin friction
  • the wire rope 4 can be released from the anchor 2 and forerunner 6.
  • the release point can be at the anchor 2 if it is a disposable anchor, or it can be disconnected at the forerunner comiection point above the mudline, for later reconnection. This provides the opportunity to at a later date reconnect to the anchor and power it to retract the flukes 12 and be recovered.
  • the electrical cable is then disconnected from the anchor deployment apparatus 2 by remote activation and the anchor has been deployed and is ready to be used.
  • the end 7 of the forerunner 6 can be located and connected to a suitable tension cable capable of performing the desired anchoring function.
  • Fig. 8a and 8b show a further view of the anchor deployment apparatus 2.
  • the flukes 12, as well as acting as anchors in the extended position when the anchor has been deployed, also act as torque resisting fins during penetration of the anchor deployment apparatus 2 into the sea bed. This resistance is necessary to counteract the force required to be applied to the auger in order for it to rotate and penetrate new earth as it progresses downwards.
  • the augur 14 in this embodiment comprises individual helical discs 26 spaced along the auger shaft 27.
  • Fig. 9 is an view of the motor and gear box of Fig. 8.
  • the motor 18 is connected to a gear box 20, which in this embodiment provides three steps of speed reduction to the auger 14 with a corresponding increase in torque.
  • a hammer vibrating device comprising a hammer anvil 22, a hammer ramp 24 and a return spring 26.
  • This induces a hammering effect to the motor shaft 28 and thus to the auger 14 at the frequency of the motor shaft speed which produces controlled vibrations in the auger and the body of the anchor deployment apparatus 2 as a whole which has the effect of loosening or liquefying the earth immediately surrounding the anchor deployment apparatus 2 which reduces the resistance to penetration.
  • This effect is temporary as the pressure of the surrounding earth and water returns the earth to its former consistency once the auger has passed, so restoring the anchoring force of the earth.
  • the soil penetration means remains in the seabed to form the anchor.
  • the soil penetration means could equally be withdrawn after forming a hole, and a dedicated anchor inserted into this hole.
  • the embodiment described is for a disposable anchor, when the mooring apparatus is no longer needed in a particular spot, it may be retrieved to be reused.
  • the auger may be driven by the motor to penetrate further so induces the flukes to close enabling the auger to drive the anchor apparatus back up.
  • the advantages of using the electrically driven auger of this invention will also appreciate the additional benefits it provides. These are the real time monitoring of the azimuth and inclination, monitoring of the current demand to give a measurement of the torque required by the user, and bi-directional rotation of the auger to, for example, enable it to deploy the flukes.
  • the apparatus can also be fitted with a battery and a transponder to provide long term feedback of the journey of the apparatus and it may also be fitted with accelerometers of seismic measurements.
  • the anchor is suspended from a generally central power and support line 6.
  • the fore-runner 4 is attached to the anchor by a hinged shackle 32 spaced from the central axis.
  • a snorkel 34 may also be fitted to the anchor, to transport fluid and cuttings away from the soil penetration means.
  • the snorkel ideally is long enough to extend to above the mud line when the anchor is at its greatest depth.
  • the soil penetration shown here is a drill bit, in this example a roller cone drill bit, configured to include counter rotating drill bit elements so as to produce no or minimal torque as the drill engages the seabed material.
  • An auger suitable for soil penetration 31 is shown in more detail in figure l ib. Referring to figure l ie, another possible soil penetration means is a jetting head.
  • Figure 12 shows the anchor with the flukes 12 in a deployed state, having been expanded by pivotable arms 36 attached to a slidable ring 38 located on the anchor's shaft 39.
  • separate anti-torque fins 41 are positioned on the auger motor housing 42.
  • the anchor 2 is lowered on a support cable 6 by a heave compensated winch from a vessel 10.
  • the support cable is attached by a quick connect 47 to a buoy close to the end of the mooring line.
  • an ROV 44 connected to the vessel 10 by an umbilical 46 is positioned near to the anchor 2, and a power connection with a 'stab in' connector on the end of the mooring line 48.
  • the power connection could be an electrical supply, or it could be a hydraulic line, the mooring line including an appropriate conduit for the power to supply the anchor.
  • the powered anchor is then caused to penetrate the seabed to a suitable depth and activated to secure itself, a snorkel line 34 venting cuttings, debris and fluid from the borehole made by the anchor as it penetrates the seabed.
  • the ROV and support line are then discomiected.
  • the anchor and mooring line are now ready to be used to tether a marine structure; an upper mooring line can be attached to the quick connect located on the buoy previously used to attached the anchor to the support line.
  • the anchor in another embodiment includes an auger comprising separate helical discs 51 (each disc comprising a helix subtending one 360° rum) spaced apart on a shaft 52, this shaft 52 passing through a motor 53 and extending into a housing 55.
  • the housing includes anti-torque fins 41.
  • the motor 53 rums the shaft 52 of the auger, and the helical discs 51 advance the shaft 52 through the seabed material.
  • the shaft 52 is free to slide axially relative to the motor 53, which continues to turn it.
  • the motor ceases to rum the shaft, at the position shown in figure 13b.
  • Another motor, or a separate gear of motor 53, is engaged to draw the shaft back into the housing without rotating it.
  • the auger discs 51 resist upward translational movement of the auger, so the housing 55 is drawn down through the seabed material, as shown in figure 13c. In this way, the auger penetrates the seabed material without having to drag the housing behind it, the translation of the housing then being accomplished as a separate action with the auger discs acting as anchors.
  • the anchor 2 could be mounted on a skid 62 and lowered to the seabed on that skid.
  • the anchor may then conveniently be set on ramp 64 set at an angle to the horizontal (the seabed being considered approximately horizontal).
  • the anchor is then activated so that its soil penetration means 66 (here shown as a roller cone drill bit having counter-rotating elements to eliminate or minimise reactive torque on the anchor) penetrates the seabed at the angle of the ramp 64.
  • the skid 62 can also be orientated azimumally, that is, when considered from above (for example using an ROV, by rotating the support line, or by some orientation means on the skid itself) .
  • the angle of the ramp may be adjusted as desired on the vessel before deployment.
  • the mooring line When the anchor is subsequently used to moor a marine structure or vessel, the mooring line extends in a straight line between the anchor and the mooring point on the marine stmcture.
  • the mooring line Where an anchor is installed vertically into the seabed, and the mooring line then tightened at an angle to the vertical, the mooring line is subjected to bending at the surface of the seabed, the mooring line being stressed at the bend; tension on the mooring line can also cause the mooring line to slice through the mud as the line attempts to lie in a straight line, weakening the securement of the anchor.
  • tension on the mooring line can also cause the mooring line to slice through the mud as the line attempts to lie in a straight line, weakening the securement of the anchor.
  • Orienting the anchor in the described manner eliminates or diminishes any bending in the mooring line and any tendency for the mooring line to slice through the seabed material.
  • the anchor may be a suction pile, or the anchor may be driven into the seabed using a charge.
  • features disclosed in respect of one embodiment may be transferable to the other embodiments.
  • the mooring apparatus is primarily intended for the securement of floating rigs, it can be used whenever anchor points upon the seabed are required. It may also be incorporated into other underwater apparatus.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un appareil d'installation pour le plancher océanique comprenant des moyens de pénétration dans le sol (2), une ligne de déploiement (4), au bout de laquelle les moyens de pénétration dans le sol sont suspendus, une ligne d'amarrage (6) fixée aux moyens de pénétration dans le sol, cette dernière étant fixée, de manière à pouvoir être détachée, à la ligne de déploiement. Ladite ligne d'amarrage (6) est plus courte que la ligne de déploiement (4). La ligne de déploiement (4) alimente les moyens de pénétration en énergie. La ligne d'amarrage (6) est fixée, de manière à pouvoir être détachée, sensiblement le long de la ligne d'amarrage. Lesdits moyens de pénétration dans le sol comprennent une tarière et des nervures capables de résister au couple produit par l'action des moyens de pénétrations dans le sol. L'invention concerne des moyens de mesure et de commande capables de calculer les caractéristiques de pression des moyens de pénétration dans le sol et de transformer l'actions desdits moyens de pénétration selon les caractéristiques de pénétration.
PCT/GB2003/003172 2002-07-23 2003-07-23 Appareil d'installation pour le plancher oceanique Ceased WO2004009434A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003254482A AU2003254482A1 (en) 2002-07-23 2003-07-23 Seabed installation apparatus
US10/523,137 US20060118309A1 (en) 2002-07-23 2003-07-23 Seabed installation apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0217059A GB0217059D0 (en) 2002-07-23 2002-07-23 Mooring system
GB0217059.5 2002-07-23
GB0224410A GB0224410D0 (en) 2002-10-19 2002-10-19 Seabed installation apparatus and method of deployment
GB0224410.1 2002-10-19

Publications (1)

Publication Number Publication Date
WO2004009434A1 true WO2004009434A1 (fr) 2004-01-29

Family

ID=27790197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/003172 Ceased WO2004009434A1 (fr) 2002-07-23 2003-07-23 Appareil d'installation pour le plancher oceanique

Country Status (4)

Country Link
US (1) US20060118309A1 (fr)
AU (1) AU2003254482A1 (fr)
GB (1) GB2391005B (fr)
WO (1) WO2004009434A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2259515A1 (es) * 2004-09-09 2006-10-01 Joaquin Aragones Rabassa Sistema de fondeo para cuerpos flotantes.
KR101731157B1 (ko) * 2012-04-05 2017-04-27 그린스틱 에너지 엘티디 계류 장치

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2071213B1 (fr) * 2007-12-11 2014-12-03 General Electric Company Réduction du bruit de la boîte de vitesse par contrôle électrique de la commande
NO332343B1 (no) * 2008-11-25 2012-09-03 Deep Sea Mooring As System og fremgangsmate for ankerovervaking og -verifisering
CN102947534B (zh) * 2010-06-14 2015-04-29 国际壳牌研究有限公司 使用随意船进行的海底完井和井采油修理作业
US9346521B2 (en) * 2014-09-03 2016-05-24 Technip France Vessel recovery system and method
NO20161873A1 (no) * 2016-11-25 2017-02-03 Optiship As Etablering av fjellboltar med borrerigg og ROV
KR20220130154A (ko) 2020-01-27 2022-09-26 어더 랩 엘엘씨 수중 기재에 앵커를 설치하기 위한 차량

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277969A (en) * 1964-02-07 1966-10-11 Pan American Petroleum Corp Underwater drilling
FR1501946A (fr) * 1966-09-30 1967-11-18 Ancrage à réaction
US3633685A (en) * 1970-03-09 1972-01-11 Manuel R Piexoto Deep well drilling apparatus
WO1997014609A1 (fr) * 1995-10-19 1997-04-24 A.S Selantic Systeme d'ancre
US6066015A (en) * 1998-08-17 2000-05-23 Brown; James D. Method and system for anchoring a buoy via a screw-type anchor
WO2001032501A1 (fr) * 1999-11-01 2001-05-10 Offshore Energy Development Corporation Procede de connexion de ligne d'ancrage sous-marine et connecteur associe
FR2800871A1 (fr) * 1999-11-04 2001-05-11 France Etat Ponts Chaussees Procede et dispositif d'essai triaxial in situ

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999572A (en) * 1958-02-12 1961-09-12 John D Hinckley Earth anchor
US3604519A (en) * 1969-02-14 1971-09-14 Stephen V Chelminski Method of creating underwater thrusts to drive a member into the earth
US3753471A (en) * 1971-04-12 1973-08-21 Baker Oil Tools Inc Disconnectible torque and drilling weight transmission apparatus for drill bits
US3850128A (en) * 1973-07-16 1974-11-26 Ocean Science & Eng Vibratory anchor
FR2373645A1 (fr) * 1976-12-13 1978-07-07 Ingemer Embase precontrainte au fond de l'eau et procede pour sa mise en place
US4215544A (en) * 1978-05-17 1980-08-05 Tad Stanwick Method of generating rotary power in a deepsea environment
EP0011894B1 (fr) * 1978-12-04 1984-07-04 Shell Internationale Researchmaatschappij B.V. Méthode et appareillage pour l'installation d'un élément tubulaire au fond de l'eau
US4312289A (en) * 1979-11-13 1982-01-26 Joseph Conrad Permanent mooring apparatus
US4356788A (en) * 1981-04-27 1982-11-02 The United States Of America As Represented By The Secretary Of The Navy Deepwater propellant embedded anchor having emergency release mechanism
US6009825A (en) * 1997-10-09 2000-01-04 Aker Marine, Inc. Recoverable system for mooring mobile offshore drilling units
GB2364728B (en) * 1998-05-16 2002-12-04 Duncan Cuthill Method of and apparatus for installing a pile underwater to create a mooring anchorage
NO993680L (no) * 1998-07-29 2000-01-31 Philip Head Forankringsanordning og fremgangsmåte
GB2355039B (en) * 1999-10-06 2004-04-21 Liberty Offshore Ltd Drilled pile
EP1283158A1 (fr) * 2001-08-06 2003-02-12 Single Buoy Moorings Inc. Procédé d'installation de ligne d'ancrage et connecteur associé
US6752100B2 (en) * 2002-05-28 2004-06-22 Shell Oil Company Apparatuses and methods of deploying and installing subsea equipment
US7117812B2 (en) * 2003-10-30 2006-10-10 Delmar Systems, Inc. Apparatus and method for gravity anchor installation
US20070017429A1 (en) * 2005-07-21 2007-01-25 Riggs John M Reverse tensioned mooring system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277969A (en) * 1964-02-07 1966-10-11 Pan American Petroleum Corp Underwater drilling
FR1501946A (fr) * 1966-09-30 1967-11-18 Ancrage à réaction
US3633685A (en) * 1970-03-09 1972-01-11 Manuel R Piexoto Deep well drilling apparatus
WO1997014609A1 (fr) * 1995-10-19 1997-04-24 A.S Selantic Systeme d'ancre
US6066015A (en) * 1998-08-17 2000-05-23 Brown; James D. Method and system for anchoring a buoy via a screw-type anchor
WO2001032501A1 (fr) * 1999-11-01 2001-05-10 Offshore Energy Development Corporation Procede de connexion de ligne d'ancrage sous-marine et connecteur associe
FR2800871A1 (fr) * 1999-11-04 2001-05-11 France Etat Ponts Chaussees Procede et dispositif d'essai triaxial in situ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2259515A1 (es) * 2004-09-09 2006-10-01 Joaquin Aragones Rabassa Sistema de fondeo para cuerpos flotantes.
ES2259515B1 (es) * 2004-09-09 2007-06-01 Joaquin Aragones Rabassa Sistema de fondeo para cuerpos flotantes.
KR101731157B1 (ko) * 2012-04-05 2017-04-27 그린스틱 에너지 엘티디 계류 장치

Also Published As

Publication number Publication date
AU2003254482A1 (en) 2004-02-09
US20060118309A1 (en) 2006-06-08
GB0317238D0 (en) 2003-08-27
GB2391005B (en) 2005-05-04
GB2391005A (en) 2004-01-28

Similar Documents

Publication Publication Date Title
US6463801B1 (en) Apparatus, method and system for measurement of sea-floor soil characteristics
US6009825A (en) Recoverable system for mooring mobile offshore drilling units
US6719496B1 (en) ROV installed suction piles
US6223671B1 (en) Mooring system
JP3574071B2 (ja) 物体または負荷を海床へと展開するための装置および方法
US7325628B2 (en) Anchor for vehicle, vehicle and anchor in combination, and method of using the anchor
KR102252116B1 (ko) 해저 지지 유닛 및 천수 천공 터미널을 제공하는 방법
CN115298088B (zh) 用于将锚安装在水下基底中的载具
US8967270B2 (en) Rigless abandonment system
US6273645B1 (en) Position penetrated anchor system
US5480521A (en) Tendon foundation guide cone assembly and anode
KR20120083410A (ko) 수중 물체의 바닥에 앵커 부재를 부착시키기 위한 방법, 장치 및 시스템
US20060118309A1 (en) Seabed installation apparatus
US3850128A (en) Vibratory anchor
CN112706878A (zh) 一种通用伞状沉砂式大型船舶及海工平台固定装置
CN114008293A (zh) 钻孔装置
US5755533A (en) Tendon foundation guide cone assembly and method
AU2012321076A1 (en) Drilling arrangement
WO2010062184A2 (fr) Systeme et procede de surveillance et de verification d'ancre
WO1998046833A1 (fr) Systeme d'ancre penetrante
US20120302115A1 (en) Offshore Antenna Tower and Instrument Array with Tension Member
CN115320785A (zh) 一种使用系泊缆进行浮式平台固定的方法
CN117966722A (zh) 一种海域施工船锚固桩及成桩工艺
NO347421B1 (en) A deep-sea underwater drilling system for drilling and core sampling on a seabed
Stroud Mooring floating oil rigs-northwest Australia

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
ENP Entry into the national phase

Ref document number: 2006118309

Country of ref document: US

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 10523137

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 10523137

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP