WO2004079100A2 - Pilier d'ancrage avec ailettes externes - Google Patents

Pilier d'ancrage avec ailettes externes Download PDF

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Publication number
WO2004079100A2
WO2004079100A2 PCT/US2004/004742 US2004004742W WO2004079100A2 WO 2004079100 A2 WO2004079100 A2 WO 2004079100A2 US 2004004742 W US2004004742 W US 2004004742W WO 2004079100 A2 WO2004079100 A2 WO 2004079100A2
Authority
WO
WIPO (PCT)
Prior art keywords
hollow member
elongated hollow
longitudinally disposed
anchor
pile anchor
Prior art date
Application number
PCT/US2004/004742
Other languages
English (en)
Other versions
WO2004079100A3 (fr
Inventor
Richard D. Raines
Original Assignee
Exxonmobil Upstream Research Company
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 Exxonmobil Upstream Research Company filed Critical Exxonmobil Upstream Research Company
Priority to EA200501411A priority Critical patent/EA006958B1/ru
Priority to BRPI0406830-0A priority patent/BRPI0406830B1/pt
Priority to CA002513534A priority patent/CA2513534A1/fr
Priority to GB0514893A priority patent/GB2414002B/en
Priority to US10/541,290 priority patent/US7140319B2/en
Publication of WO2004079100A2 publication Critical patent/WO2004079100A2/fr
Publication of WO2004079100A3 publication Critical patent/WO2004079100A3/fr
Priority to NO20054552A priority patent/NO20054552L/no

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
    • 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

  • This invention relates generally to pile anchor technology, and in particular, to a novel pile anchor having external vanes.
  • the external vanes help maintain the heading and bearing of the anchor during installation, and may also enhance the holding capacity of the anchor.
  • Offshore structures such as those used by the petroleum industry, are sometimes moored to the seafloor using pile anchors.
  • Existing pile anchors may generally be described as a single tubular element, typically circular in cross section, with a closed top and an open bottom.
  • the ability of a pile anchor to moor an object is typically referred to as an anchor's "holding capacity.”
  • the holding capacity of a pile anchor increases with the size of the anchor.
  • the anchor's material, fabrication and installation costs are typically as the size of the anchor increases.
  • Additional background can be found in US 5,915,326 to Karal, GB 1,269,599 A to Joppa et al, US 5,704,732 to Horton, and US 4,619,218 to Kenny. What is needed is a pile anchor installation system that reduces the high costs of material, fabrication and installation without substantially reducing the anchor's holding capacity.
  • This invention includes a pile anchor for use in mooring an offshore structure to the seafloor.
  • the anchor includes an elongated hollow member having an upper end, an open lower end and a longitudinal axis, a load transfer device or means for connecting an anchor line to the elongated hollow member, a first longitudinally disposed vane extending outwardly from the outer surface of the elongated hollow member.
  • the elongated hollow member may be a circular tubular member.
  • the upper end of the elongated hollow member alternatively has the capacity to regulate fluid flow.
  • the load transfer device is fixed to the outer surface of the elongated hollow member.
  • the elongated hollow member alternatively has a second longitudinally disposed vane extending outwardly from the outer surface of the elongated hollow member.
  • the invention also includes a method of anchoring a pile anchor into the floor of a body of water.
  • the method includes installing a pile anchor into the floor of the body of water.
  • the pile anchor includes (i) an elongated hollow member having an upper end, an open lower end, a longitudinal axis and a transverse cross section, (ii) a load transfer device for connecting an anchor line to the elongated hollow member, the load transfer device fixed to the outer surface of the elongated hollow member and positioned on the circumference of the elongated hollow member, and (iii) a first longitudinally disposed vane extending outwardly from the outer surface of the elongated hollow member.
  • Another embodiment of the invention provides a method of producing offshore hydrocarbon resources.
  • the method includes anchoring an offshore stracture to the seabed through use of a pile anchor.
  • the pile anchor includes (i) an elongated hollow member having an upper end, an open lower end, a longitudinal axis and a transverse cross section; (ii) a load transfer device for comiecting an anchor line to the elongated hollow member, the load fransfer device fixed to the outer surface of the elongated hollow member and positioned on the circumference of the elongated hollow member; and (iii) a first longitudinally disposed vane extending outwardly from the outer surface of the elongated hollow member.
  • the method further includes connecting the load fransfer device to an offshore structure and producing hydrocarbon resources.
  • Figure 1 illustrates one embodiment of a pile anchor according to the invention.
  • Figure 2 is a top view of one embodiment of an anchor in accordance with this invention, which illustrates a padeye as the 0 degree reference point.
  • FIG. 3 is a schematic view of one embodiment of an anchor made in accordance with this invention.
  • Figure 4 is a schematic view of one embodiment of an anchor made in accordance with this invention with an additional longitudinally disposed vane attached to the back of the anchor
  • Figure 5 is a schematic view of one embodiment of this invention wherein slots are used to secure the longitudinally disposed vanes to the tubular member.
  • Figure 6 is a schematic view of one embodiment of the invention that has two- part planar vanes.
  • Figure 7 is an overhead view of one embodiment of the invention that has two- part planar vanes.
  • Figure 8 is a schematic view of one embodiment of the invention that has curved non-planar vanes.
  • Figure 9 is an overhead view of one embodiment of the invention that has curved non-planar vanes.
  • Figure 10 is a front-side schematic view of one embodiment of the invention that has two-part planar vanes.
  • Figure 11 is aback-side schematic view of one embodiment of the invention that has two-part planar vanes.
  • Figure 12 is an overhead view of one embodiment of the invention that has two-part planar vanes.
  • Figure 13 is a front-side schematic view of one embodiment of the invention that has a single planar vane.
  • Figure 14 is aback-side schematic view of one embodiment of the invention that has a single planar vane.
  • Figure 15 is an overhead view of one embodiment of the invention that has a single planar vane.
  • Figure 16 illustrates an offshore spar that is anchored using the anchors of the invention.
  • elongated hollow member is meant to refer to any device that forms an enclosure on all its sides except that its top and bottom ends may be open or closed with a cap.
  • a circular, rectangular or elliptical conduit with a closed or open top and lower end.
  • An elongated hollow member may be completely hollow within its interior or may be only partially hollow, for example including internal structural bracing within the elongated hollow member.
  • the elongated hollow members according to the invention may have an open lower end.
  • pile anchors are installed by being lowered into the soil in a controlled descent, with the weight of the anchor being the initial driving force.
  • Cables are used to help control the descent of the pile anchor, and pressure release mechanisms, such as two-way flow valves on the pile anchor, are opened to allow water to evacuate from interior of the pile anchor, thereby allowing penetration of the pile anchor into the soil.
  • This process is referred to as self-weight penetration.
  • self-weight penetration is followed by applying another force on the anchor to obtain the final penetration depth.
  • this force is applied by way of suction penetration.
  • suction penetration a water evacuation pump is attached to the suction pile anchor and water is pumped out from the anchor's interior. The differential water pressure that is created results in a net downward force that is used to push the suction pile anchor to final penetration.
  • a direct force can also be applied on the anchor, such as using a pile-driving hammer, to achieve final penetration.
  • the direct force can be used either alone or in combination with suction penetration.
  • the anchoring device of this invention has the general configuration of an elongated hollow member, but in addition has one or more longitudinally disposed vanes located on the exterior of the anchor. In one alternative embodiment the anchor has two vanes located on either side of the load fransfer connection point.
  • the vanes can be constructed of the same materials as the suction pile anchor, or other structural materials as would be evident to one of ordinary skill in the art.
  • a pile anchor may be any elongated hollow member, including a circular cylindrical member.
  • FIG. 1 An example of one embodiment of a pile anchor is provided in Figure 1 , which shows the pile anchor (100) as made up of a cylindrical body (160) that is closed at the top by a cap (150), and open at its lower end.
  • a load fransfer connection point such as a padeye (120) is located on the side of pile anchor (100) to attach an anchor chain (130) which transfers the load from an offshore structure (not shown), such as a floating stracture, DDCV, drilling or production riser, pipeline, semi- submersible, drilling vessel, subsea structure, or other structure.
  • the anchor (100) includes at least one vane (275 A) attached to the main body of the anchor and alternatively a second vane (275B).
  • Cap (150) alternatively contains two-way flow valve(s) (110).
  • Water evacuation pump (20) can be connected to a flow valve (110) to regulate fluid flow between the interior and exterior of the anchor to provide for suction installation.
  • the pile anchor (100) is supported by deployment hardware such as spreader bar (140), which in turn can be supported by a crane (or other surface machinery) through crane hook (30).
  • Pile anchor (100) may be embedded in the sea floor (10) through the installation methods previously described and those hereafter described.
  • the load transfer connection point, or padeye (120) will be considered as the 0 degree reference point. Measurement of the deviation from this reference point is made in a clockwise direction.
  • at least one longitudinally disposed vane (275 A) is alternatively located between about 45 degrees and about 135 degrees from padeye (120), and optionally a second longitudinally disposed vane (275B) is alternatively located between about 225 degrees and about 315 degrees from padeye (120).
  • the anchors according to the invention may be constructed such that the vanes depicted in Figure 2 are attached to the elongated hollow member (160) at angles greater or less than those specified in this paragraph, for example at about 35 to 145 and about 215 to 325 degrees, at about 25 to 155 and about 205 to 335 degrees or about 55 to 125 and about 235 to 305 degrees.
  • the length of the vanes (275A & 275B) that protrude from the elongated hollow member can vary in both the longitudinal and radial directions. Generally these lengths can be optimized by designing vane lengths with reference to the soil conditions at the intended installation site using engineering judgment.
  • the referenced dimensions apply to the portion of the vane that is protruding from and exterior to the elongated hollow element.
  • the vanes may be between about 2 to 200 percent of the average diameter of the elongated hollow member (160) in the radial direction.
  • the vanes may alternatively be between about 5 to 90, 10 to 70, 15 to 60, or 20 to 55 percent of the average diameter of the elongated hollow member in the radial direction.
  • the vanes may also be constructed to a certain length in the longitudinal direction. In one embodiment the vanes are from 5 to 150 percent of the average length of the elongated hollow member in the longitudinal direction.
  • the vanes may alternately be from 10 to 100, 25 to 100, 50 to 100, 45 to 100, or 45 to 95 percent of the average length of the elongated hollow member in the longitudinal direction.
  • Additional longitudinally disposed vanes can extend from the anchor (100).
  • the additional vane or vanes can be located on the back and/or the front of the anchor.
  • the "front quarter" of the anchor includes the portion of the anchor extending from about 315 degrees to about the 0 degree reference point and from about the 0 degree reference point to about 45 degrees, or in other words from about 45 degrees on each side of the padeye (120).
  • the "back quarter" of the anchor is that section of the anchor that lies between about 135 degrees to about 225 degrees from padeye (120).
  • a preferred embodiment of the invention is shown containing an additional longitudinally disposed vane (275 C) attached to the back quarter of the anchor.
  • Com ection of the vanes to the anchor (100) can be accomplished by commonly known methods.
  • the vane may be attached to the anchor's exterior by known welding techniques.
  • slots (215) are provided in anchor (100), and the vanes are attached to anchor (100) by inserting them through the slots (215) and then attaching the vanes to the slots using common techniques, such as welding.
  • Diametrically aligned vanes for example vanes (275 A) and (275B) shown in Figure 4, may be fabricated in one piece and assembled to fit through both slots (215A) and (215B) in the suction pile anchor (100). In this configuration, the vanes in combination with other associated internal bracing (not shown) could also provide structural support for the padeye (120).
  • vanes (275 A) and (275B) are depicted in this one embodiment as straight planar elements coming off of the main body (160) of the anchor (100) perpendicular to a plane tangent to the anchor's main body (160) and parallel to the longitudinal axis of the main anchor body (160); however, the vanes according to the invention are not limited to straight planar vanes, to vanes which are attached perpendicular to a plane tangent to the outer surface of the anchor's main body, nor to vanes parallel to the longitudinal axis of the main body of the anchor.
  • the vanes according to the invention may be of many varied shapes including, but not limited to, curved vanes or vanes made up of multiple planar elements attached at various angles in a hinged manner.
  • the various vane shapes may be attached in a substantially longitudinal manner with respect to the main body of the anchor or be attached at an angle with respect to the longitudinal axis of the main anchor body.
  • the vanes may also be attached at an angle other than ninety degrees (i.e. perpendicular) from a plane that is tangent to the outer surface of the main body of the anchor.
  • Figure 6 depicts an anchor (100) with two vanes (275A & 275B) that are attached to the elongated hollow member (160) at an angle relative to a plane tangent to the circular elongated hollow member (160).
  • the vanes (275 A & 275B) are also not a single planar shape, but are located in two separate planes that form an angle at the point of attachment.
  • Figure 7 depicts an overhead view of the anchor (100) depicted in Figure 6 which further displays the angled attachment of the vanes (275 A & 275B) and the biplanar form of the vanes (275 A & 275B).
  • Figure 8 depicts an anchor (100) with two curved, semicircular, non-planar vanes (275A & 275B).
  • Figure 9 displays an overhead view of the anchor (100) and vanes (275 A & 275B) depicted in Figure 8.
  • Figure 10 depicts an anchor ( 100) with two vanes (275 A & 275B) that, while attached perpendicular to the plane tangent to the circular elongated hollow member (160), contain two planar vane elements which are attached at an angle.
  • the vanes are attached to the back side of the anchor (100) at about 135 degrees and 225 degrees respectively from the padeye (120).
  • Figures 11 and 12 display the reverse angle and above view of the anchor (100) depicted in Figure 10.
  • the anchors according to the invention may be constructed such that the vanes depicted in Figures 10, 11, and 12 are attached to the elongated hollow member (160) at angles greater or less than those specified in this paragraph, for example at about 125 and 235 degrees respectively from the padeye (120) or about 145 and 215 degrees respectively from the padeye (120).
  • Figure 13 depicts the front-side view of an anchor (100) that has a single planar vane (280) attached to the back-side of the anchor's main body (160) such that opposing ends of the vane act like separate vanes as in the embodiment disclosed in Figures 1, 2 and 3.
  • Figure 14 presents the backside view, while Figure 15 presents an overhead view of the same single vane arrangement.
  • the single vane of this configuration may require additional external bracing (290) as depicted in Figure 15.
  • longitudinally disposed vanes (275 A) and (275B) will also increase the soil bearing area of the anchor (100) against lateral displacement and will therefore increase the anchor's holding capacity. Accordingly, with vanes (275 A) and (275B), an anchor (100) may be designed smaller in size while maintaining a given holding capacity, thereby obtaining cost benefits for material and installation.
  • the dimensions, configuration and number of the vanes incorporated on anchor (100) can be determined by one of ordinary skill in the art based upon factors including the application, the soil engineering properties, the bearing and heading of the anchor, the magnitude and types of loading conditions, and the economies of fabrication and installation operations.
  • the vanes aid in the installation of the anchor (100) by maintaining the bearing and heading of the anchor during self-weight penetration and suction installation, or during installation by other methods.
  • This ability to maintain an anchor's bearing and heading is particularly useful for the installation method described in co-pending U.S. Patent Application No. 10/382,291, filed March 5, 2003, titled Method for Installing a Pile Anchor, the entirety of which is hereby incorporated by reference herein.
  • the referenced co-pending application discloses an installation method that enhances the holding capacity of a pile anchor by installing the pile anchor at an angle with respect to the seafloor so that the top of the anchor is inclined in a direction opposite to the applied load.
  • the anchor is positioned at an inclined angle with respect to the sea floor, with the top of the anchor inclined in a direction away from the direction of lateral loading, and then inserted at least partially into the seafloor while the angle of inclination is substantially maintained.
  • the present invention therefore also includes a method for installing a pile anchor into the sea floor, and in particular, the invention permits reducing or eliminating the vertical load acting upon a pile anchor and correspondingly increasing the lateral load component, thereby enhancing the anchor's holding capacity.
  • An elongated hollow element, such as the pile anchor (100), embedded in a typical sea floor (10) sfratigraphy can achieve a higher holding capacity when it is displaced through the soil perpendicular to its longitudinal axis, as opposed to displacement along its longitudinal axis.
  • load components represent lateral soil resistance (bearing resistance) and vertical soil resistance (sliding fiictional resistance), respectively.
  • the preferred method for deploying the tubular member described herein will permit the pile anchor 100 to be installed so the vertical load component can be reduced incrementally, or completely eliminated.
  • a preferred embodiment of the invention where the anchor is installed at an angle the suction pile anchor 100 may be installed using a guide frame to create and maintain the desired angle of inclination.
  • the desired angle of inclination is created and maintained by connecting a tensioning device to provide upward tension to the side of the pile anchor (100) on which the lateral load connection is applied, i.e., padeye (120).
  • anchor chain (130) may serve as the tensioning device for this embodiment.
  • Alternative tensioning devices can be used, which include but are not limited to a lifting cable, or bar (or other rigid member).
  • Another embodiment of this invention provides a pile anchor (100) with internal compartments that can be selectively evacuated of water to provide selective buoyancy for the pile anchor (100). By selectively adjusting the buoyancy of the pile anchor (100), the desired angle of inclination can be achieved during installation.
  • the spreader bar (140) or other deployment hardware is attached to the pile anchor (100) at an offset position so that the axis of rotation is not through the center of gravity of the pile (100).
  • the spreader bar (1 0) or other deployment hardware is positioned such that the suction pile anchor (100) naturally assumes the desired angle of inclination when it is deployed. Rigging cables or slings may be employed in these embodiments to steady the suction pile anchor (100) during lowering and initial insertion into the sea floor (10).
  • FIG 16 depicts an embodiment of the invention where pile anchors (100) are used to anchor an offshore structure (200) through use of anchor chains (130) connected to such pile anchors (100) tlirough use of a load transfer device (120).
  • the offshore structure (200) may be for example a spar (e.g. a deep draft caisson vessel ("DDCV") or a trass spar) that is equipped with a deck (230).
  • the deck (230) can support offshore hydrocarbon resource (i.e. oil and gas) exploration, drilling and production operations.
  • the deck may be use to conduct offshore seismic data collection.
  • the deck can support offshore drilling equipment for oil and/or gas drilling operations.
  • the deck may also support oil and/or gas production equipment for the production of oil and gas natural resources.
  • Produced oil and/or gas may then be offloaded from the deck by, for example, pipeline to shore or a transport ship or barge and then moved to shore.
  • the oil and gas may then be refined into usable petroleum products such as, for example, natural gas, liquefied petroleum gas, gasoline, jet fuel, diesel fuel, heating oil or other petroleum products.
  • usable petroleum products such as, for example, natural gas, liquefied petroleum gas, gasoline, jet fuel, diesel fuel, heating oil or other petroleum products.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Foundations (AREA)
  • Piles And Underground Anchors (AREA)
  • Earth Drilling (AREA)

Abstract

Cette invention se rapporte à un élément creux allongé comportant une ou plusieurs ailettes externes disposées longitudinalement et servant à fixer une construction en mer dans le fond marin. Les ailettes externes contribuent à maintenir le cap et le relèvement du pilier d'ancrage pendant l'opération d'installation et elles peuvent également améliorer la tenue du pilier d'ancrage.
PCT/US2004/004742 2003-03-04 2004-02-17 Pilier d'ancrage avec ailettes externes WO2004079100A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EA200501411A EA006958B1 (ru) 2003-03-04 2004-02-17 Анкерная свая с наружными лопатками
BRPI0406830-0A BRPI0406830B1 (pt) 2003-03-04 2004-02-17 áncora de estaca, e, métodos de ancorar uma áncora de estaca no fundo de um corpo de água, e de produzir reservas de hidrocarbonetos fora da costa.
CA002513534A CA2513534A1 (fr) 2003-03-04 2004-02-17 Pilier d'ancrage avec ailettes externes
GB0514893A GB2414002B (en) 2003-03-04 2004-02-17 Pile anchor with external vanes
US10/541,290 US7140319B2 (en) 2003-03-04 2004-02-17 Pile anchor with external vanes
NO20054552A NO20054552L (no) 2003-03-04 2005-10-04 Peleanker med utvendige skovler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45173403P 2003-03-04 2003-03-04
US60/451,734 2003-03-04

Publications (2)

Publication Number Publication Date
WO2004079100A2 true WO2004079100A2 (fr) 2004-09-16
WO2004079100A3 WO2004079100A3 (fr) 2005-01-27

Family

ID=32962632

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/004742 WO2004079100A2 (fr) 2003-03-04 2004-02-17 Pilier d'ancrage avec ailettes externes

Country Status (6)

Country Link
BR (1) BRPI0406830B1 (fr)
CA (1) CA2513534A1 (fr)
EA (1) EA006958B1 (fr)
GB (5) GB2436240B (fr)
NO (1) NO20054552L (fr)
WO (1) WO2004079100A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7527455B2 (en) 2003-03-04 2009-05-05 Exxonmobil Upstream Research Company Anchor installation system
WO2013053936A1 (fr) * 2011-10-14 2013-04-18 Single Buoy Moorings Inc. Système d'ancrage sur le plancher sous-marin et procédé associé
WO2020041088A1 (fr) * 2018-08-21 2020-02-27 Exxonmobil Upstream Research Company Réduction de tranchée au niveau de lignes d'amarrage
CN111021399A (zh) * 2019-11-11 2020-04-17 合肥学院 一种可发生旋转的吸力贯入式锚泊基础
WO2020246893A1 (fr) * 2019-06-03 2020-12-10 Dr. Techn. Olav Olsen As Dispositif d'ancrage de matériau non consolidé et procédé d'agencement d'un pieu d'ancrage dans des matériaux non consolidés

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN104802927A (zh) * 2015-04-28 2015-07-29 中国海洋石油总公司 一种模拟深水吸力锚负压安装的试验装置及方法
CN111516802B (zh) * 2020-05-12 2021-05-04 中国船舶科学研究中心 一种海底框架固定式群锚系统

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US3496900A (en) * 1968-05-23 1970-02-24 Texaco Inc Method for installing a deep water anchor
US3817040A (en) * 1972-07-03 1974-06-18 E Stevens Pile driving method
US3969853A (en) * 1975-02-03 1976-07-20 Foresight Industries Torque fin anchor
US4318641A (en) * 1978-12-04 1982-03-09 Shell Oil Company Method for securing a tubular element to the bottom of a body of water and apparatus for carrying out this method
US5033908A (en) * 1987-11-05 1991-07-23 Multiconsult A/S Equipment and method for positioning constructions on the seafloor or on mainland
US6457908B1 (en) * 1997-05-06 2002-10-01 Delmar Systems, Inc. Method and apparatus for suction anchor and mooring deployment and connection

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SU1135846A1 (ru) * 1983-11-23 1985-01-23 Трест "Оргтехнефтетрубопроводстрой" Грунтовый анкер

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Publication number Priority date Publication date Assignee Title
US3496900A (en) * 1968-05-23 1970-02-24 Texaco Inc Method for installing a deep water anchor
US3817040A (en) * 1972-07-03 1974-06-18 E Stevens Pile driving method
US3969853A (en) * 1975-02-03 1976-07-20 Foresight Industries Torque fin anchor
US4318641A (en) * 1978-12-04 1982-03-09 Shell Oil Company Method for securing a tubular element to the bottom of a body of water and apparatus for carrying out this method
US5033908A (en) * 1987-11-05 1991-07-23 Multiconsult A/S Equipment and method for positioning constructions on the seafloor or on mainland
US6457908B1 (en) * 1997-05-06 2002-10-01 Delmar Systems, Inc. Method and apparatus for suction anchor and mooring deployment and connection

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7527455B2 (en) 2003-03-04 2009-05-05 Exxonmobil Upstream Research Company Anchor installation system
WO2013053936A1 (fr) * 2011-10-14 2013-04-18 Single Buoy Moorings Inc. Système d'ancrage sur le plancher sous-marin et procédé associé
WO2020041088A1 (fr) * 2018-08-21 2020-02-27 Exxonmobil Upstream Research Company Réduction de tranchée au niveau de lignes d'amarrage
US10894581B2 (en) 2018-08-21 2021-01-19 Exxonmobil Upstream Research Company Reducing trenching at mooring lines
WO2020246893A1 (fr) * 2019-06-03 2020-12-10 Dr. Techn. Olav Olsen As Dispositif d'ancrage de matériau non consolidé et procédé d'agencement d'un pieu d'ancrage dans des matériaux non consolidés
WO2021045626A1 (fr) * 2019-06-03 2021-03-11 Dr. Techn. Olav Olsen As Dispositif d'ancrage de sol faible servant à ancrer au moins une structure et procédé d'agencement d'ancrage dans un sol faible
EP4025491A4 (fr) * 2019-06-03 2023-10-04 Dr. Tech. Olav Olsen AS Dispositif d'ancrage de sol faible servant à ancrer au moins une structure et procédé d'agencement d'ancrage dans un sol faible
CN111021399A (zh) * 2019-11-11 2020-04-17 合肥学院 一种可发生旋转的吸力贯入式锚泊基础
CN111021399B (zh) * 2019-11-11 2022-01-18 合肥学院 一种可发生旋转的吸力贯入式锚泊基础

Also Published As

Publication number Publication date
GB2436241B (en) 2007-11-07
GB0710644D0 (en) 2007-07-11
GB0710641D0 (en) 2007-07-11
BRPI0406830A (pt) 2005-12-27
GB2436238B (en) 2007-10-31
BRPI0406830B1 (pt) 2012-10-16
GB2436240B (en) 2007-10-31
GB2436239A (en) 2007-09-19
EA200501411A1 (ru) 2006-02-24
NO20054552D0 (no) 2005-10-04
CA2513534A1 (fr) 2004-09-16
EA006958B1 (ru) 2006-06-30
WO2004079100A3 (fr) 2005-01-27
GB2436239B (en) 2007-10-31
GB2414002A (en) 2005-11-16
NO20054552L (no) 2005-10-04
GB2436241A (en) 2007-09-19
GB2436238A (en) 2007-09-19
GB0710645D0 (en) 2007-07-11
GB0710639D0 (en) 2007-07-11
GB2414002B (en) 2007-09-05
GB0514893D0 (en) 2005-08-24
GB2436240A (en) 2007-09-19

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