EP2630027A1 - Gravity installed anchor - Google Patents
Gravity installed anchorInfo
- Publication number
- EP2630027A1 EP2630027A1 EP11749265.2A EP11749265A EP2630027A1 EP 2630027 A1 EP2630027 A1 EP 2630027A1 EP 11749265 A EP11749265 A EP 11749265A EP 2630027 A1 EP2630027 A1 EP 2630027A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- plate
- line
- gravity
- gravity installed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/803—Ground anchors with pivotable anchoring members
-
- 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
- B63B2021/265—Anchors securing to bed by gravity embedment, e.g. by dropping a pile-type anchor from a certain height
-
- 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
- B63B21/38—Anchors pivoting when in use
Definitions
- the present invention is a gravity installed anchor and a method for installing such an anchor.
- the field of use is for mooring heavy marine constructions such as semisubmersible drilling platforms, petroleum production vessels or similar vessels.
- a gravity installed anchor is installed by connecting it to a mooring line, using a installation/retrieval line to lower it to a desired height above the seafloor, and releasing the anchor to fall and penetrate to a desired depth below the seafloor into the sediments. Then the anchor line may be put in tension.
- Gravity installed anchors usually comprise a long, vertical ceiftral shank, i. e. a weight stem; a massive shank comprising a 'Solid steel cylinder or steel pipe filled with a heavy material such as steel grit, or a shank built of a massive steel plate structure, and provided with symmetrically arranged so-called "flukes", i.e. short laterally extending steel fins which extend along either the upper portion of the stem, or both the upper and lower portion of the stem. The fins are arranged for guiding the stem during the fall through the sea and into the relatively soft seabed.
- An attachment point for an anchor line is arranged either in the top stern end of the anchor or in a rotating ring about the stem. Typical weight ranges for such anchors are from 15 to 45 tons .
- US patent application US20060107886 describes an anchor for mooring large structures to a sea bottom, with an elongated central body with several channel members radiating outward from the central stem, each with a channel. A plurality of nose and tail plates are disposed within the channels and hingedly
- a gravity install anchor has an outward extending load arm which is rotatable with respect to the anchor's vertical axis.
- a load line is attached to the load arm, and a subsea connector is attached to the remote end of the load line.
- the subsea connector is held in a frame at the 10 seafloor and arranged for simplifying the connection, the gravity install anchor and the mooring assembly is lowered from the anchor handling vessel on a lowering line and released from a release hook at the end of the lowering line.
- the symmetrical gravity installed anchors of the background art 10 have generally symmetrical properties about their vertical axis.
- two of the fins may extend in a direction generally near a transverse plane relative to the anchor line direction, please see Fig. 5, and provide a horizontal i5 retention capacity in the sediments, while the area of the two
- a gravity installed anchor (1) comprising a metal plate (22) with one or more connection points (8) on a front face (221) of said plate (22) for an anchor line (17) .
- the massive metal plate (22) is arranged for being gravity installed in sedimentary layers under the seafloor.
- the plate (22) is arranged for being installed transverse to the extension of the anchor line (17) direction when in its operative state.
- the gravity is, in a material aspect, a gravity installed anchor (1) comprising a metal plate (22) with one or more connection points (8) on a front face (221) of said plate (22) for an anchor line (17) .
- the massive metal plate (22) is arranged for being gravity installed in sedimentary layers under the seafloor.
- the plate (22) is arranged for being installed transverse to the extension of the anchor line (17) direction when in its operative state.
- installed anchor comprises an elongated shank (0) connected to the plate (22) and arranged for being directed along the plate (22) during the gravity installation process, the elongated weight stem (0) provided with a nose portion (5) with a nose (51) .
- a hinge preferably centrally arranged on the plate, may form the link between the plate and the stem, so as for the plate to be able to rotate about the hinge when the anchor line is pulled taut.
- the anchor according to the invention may be defined as a gravity installed anchor (1) comprising a main anchor plate (22) with one or more connection points (8) for extending an anchor line (17) from a front face (221) of said anchor plate (22) , and with an elongated shank (0) provided with a nose portion (5) , said elongated shank (0) connected near its top stem portion (6) to said anchor plate (22) and extending near vertically downward in its installation state and arranged for being directed along said anchor plate during a gravity installation process,
- said anchor plate (22) pivotally attached to a hinge (61) on said shank (0) ,
- said hinge (61) having a generally horizontal axle (62) for allowing rotation of said anchor plate (22) relative to said shank (0) in its installed state, with said shank extending downwards out from an opposite rear face (222) relative to said front face (221) of said anchor plate (22) .
- the gravity installed anchor (1) further comprises that said hinge (61) is arranged near a centre of said anchor plate (22) .
- the gravity installed anchor (1) further comprises that said hinge (61) is arranged near a central part of an upper portion of said anchor plate (22) .
- An embodiment of the invention may constitute an intermediate
- a method for anchoring using a gravity installed anchor (1) comprising:
- an anchor with a massive metal plate (22) with a hinged shank (0) extending downwards and an installation connection point (9) at a top end;
- the anchor according to the invention may be oriented with the plate (22) generally transverse to the desired direction of the anchor line's operative direction, which is usually determined during the planning of the mooring operation. This helps achieving L5 a high retention capacity in the desired direction.
- An anchor for this use wherein a major proportion of the wings are directed normal to the load direction will provide better horizontal retention capacity.
- the anchor of the invention having a large two-winged heavy anchor plate and a weight stem extending below and parallel with the anchor plate, is completely stable during the gravity
- the invention is distinct from those of the prior art in which a large area anchor plate is arranged at the lower part of a trailing weight pile, which is less stable.
- the anchor according to the invention may be rotated about a horizontal axis after gravity installation, during the tightening of the anchor line.
- the retention capacity may be further adjusted to have the highest retention capacity in the direction of the taut anchor line.
- the hinged shank (22) is not preventing said plate (22) from rotating after gravity installation, thus the hinge link between the shank and the plate advantageously reduces the torsion moment required for this pivoting operation for the plate.
- the anchor according to the invention has a reduced risk of being pulled out of the sediments because the anchor's plate will seek to arrange itself orthogonal to the anchor line when taut, and there will be no or little force component in the "easy" pull-out direction i.e. parallel to the anchor plate (22) .
- connection points (8) slightly offset downwards in their elevation on the plate (22) .
- the connection points may be arranged slightly below the geometrical centre of the plate (22) , so as if the anchor is pulled with a force past its holding capacity, to enable the anchor to be tilted to an angle which will make it penetrate deeper into the sediments, thereby attaining a greater holding capacity.
- Fig. 1 illustrates three different perspectives of an anchor according to the invention:
- Fig. la is a side elevation view in the plane of the main plate of an embodiment vertically oriented anchor according to the invention, with a front face for being oriented towards an anchor line directed to the right, and with a shank, a weight stem directed downwards .
- Fig. lb is an isometric view as seen about 45 degrees out of the plane of the same, and showing an opposite rear face relative to the front face.
- a hinge is illustrated in the junction between the shank and the recess in the rear face of the main plate and the weight shank.
- the shank is illustrated in the parallel
- Fig. lc shows in general a front elevation plane view of the front face of the main plate of the above-mentioned embodiment of the invention.
- Fig. 2 illustrates another preferred embodiment of the invention with a hinged connection between the main plate and the shank.
- Fig. 2a is an isometric view as seen in an elevation and about 45 degrees out of the rear face of the main plane of a vertically oriented anchor according to the invention, with the main plate and the weight shank arranged in-line.
- Fig. 2b is an elevation view into the plane of the main plate of the same .
- Fig. 2c is a top view of the same.
- Fig. 2d is a side elevation view of the same, but with the main plate turned about the hinge point into an operative position with an angle of about 35-40 degrees inclination relative to the vertically oriented shank. This corresponds to the operative position shown in Fig. 4c with the anchor penetrated to a desired depth and the anchor line with its bridle lines put under tension.
- Fig. 2e is a top view of the anchor according to the
- Fig. 3 illustrates an embodiment of the invention rather similar to the embodiment shown in Fig . 1.
- Fig. 3a is an isometric view of the embodiment with the shank in a vertical position and the main plate tilted at an angle with the shank and the vertical line. The second, rear face of the main plate relative to the anchor line is shown. The tilted plate is stabilised in the rotary movement about the hinge by the guide fin through the slot near the upper part of the shank or weight stem.
- Fig. 3b is an isometric view similar to the view of the embodiment in a tilted position as in Fig. 3a but from an
- azimuthal angle about 90 degrees to the previous illustration, and showing the front face of the main plate from which the anchor line shall extend.
- Fig. 4 illustrates the method of installing the anchor according to the invention.
- Fig. 4a shows a vertical section of the seafloor and an elevation view of the anchor lowered in an installation line to a desired elevation (h) above a predetermined geographical position (x, y) on the seafloor.
- the plate is directed in an azimuthal direction transverse to a predetermined line of tension of the anchor line (17) .
- the installation line may also be used for pulling the anchor out of the seabed during retrieval or removal of the anchor.
- Fig. 4b shows the anchor gravity- installed in sediments below the same seafloor with the installation line and the anchor line extending generally up along a vertical penetration channel formed by the falling anchor.
- Fig. 4c illustrates a further development from the situation in Fig. 4b.
- the installation line is now connected to a marker buoy in the sea.
- the anchor line here connected via three bridle lines to the connecting points on the front face of the anchor's main plate has been tightened and has turned the main plate into a position nearer to a plane normal to the direction of the anchor line's direction in space. .
- Fig. 5 shows an elevation and plan view of a typical gravity installed anchor of the background art.
- the plan view shows a typical load in a random azimuthal orientation relative to the fins .
- the anchor according to the invention is illustrated in Figs. 1, 2, 3, and 4.
- the invention is a gravity installed anchor (1) comprising a massive metal plate (22) , preferably of steel, with
- the plate may be slightly kinked along a central line which will be generally vertical during the gravity installation, please see Figs. 1 and 4.
- the convex face of the kinked plate is the front face
- the anchor with the massive metal plate (22) is arranged for being gravity installed
- the anchor according to the invention has a significantly higher retention force when
- the plate (22) is tapered in its lower portion to a general V-shape pointing along with the shank.
- connection points (8) may in an embodiment be slightly
- the plate (22) has a general rectangular shape 5 forming two fin portions symmetrically extending about a vertical central symmetry line as counted in the vertical operational position of the anchor.
- the two fin portions may be slightly
- the upper, rear part of the fins may form a horizontal edge, and the lower, 5 front edge part of the fins may be tapered off as illustrated in Fig. lc and Fig. 2b.
- a main part of the outer edge of each fin is straight and parallel to the vertical central line.
- the tapering may be extensive so that the shape of the plate (22) may have a general triangular, downward-pointed shape.
- the anchor may generally be constituted by the main plate (22) with necessary connection points (8) to the anchor line's bridle lines (17a, 17b, 17c) .
- Such an embodiment would simply be a main plate (22) similar to what is illustrated
- the anchor (1) comprises an elongated weight stem or so-called shank (0) connected to the plate (22) and arranged for being directed along the plane before and during the gravity installation process, such as illustrated in Fig. 4a and Fig. 4b.
- the weight shank may be massive or comprise a hollow section
- the elongated shank (0) is provided with a nose portion (5) with a nose (51) .
- the elongated shank (0) is
- the shank (0) may also be made of vertical plates with a cross-section in a general X-shape.
- the anchor line's bridle lines (17a, 17b, 17c) should be generally !0 of equal lengths in order for the taut anchor line arrangement to have the plate oriented orthogonal to the anchor line's direction.
- the upper bridle line or lines should be slightly longer than the lower bridle line or >5 lines, so as for the plate to be slightly tilted and forced to
- the anchor may have a submerged weight of 15 to 45 tons (15000 - 45000 kg) or even more.
- the main plate (22) is a thick steel plate of thickness 50 to 100 mm or more.
- the steel plate may be massive or laminated from a stack of thinner steel plates.
- a main purpose of the thick steel plate is to provide a large surface area transverse to the
- the overall height of the anchor may be in the range of 6 to 12 metres, and the height of the main plate about 4 to 6 m, with the width across the main plate being about 3 to 5 m.
- the area of the main plate may be in the range between 8 and 20 m 2 .
- Such an anchor may have an operational tension capacity of about 300 to 750 tons at 15 - 20 m penetrated depth depending on the mechanical properties of the sedimentary layers below the sea floor.
- the plate (22) is pivotally attached to a hinge (61) near an upper part of the stem (0), preferably at a top stem portion (6) of the shank (0) such as illustrated in the operative position in Fig. 4c, and in further
- hinge (61) may have a generally horizontal axle (62) for tilting the plate (22) relative to the shank (0) . In this manner the plate may be tilted away from the vertical position after having been dropped into the sediments wherein the shank initially is in the
- the shank extends with some angle out from an opposite, rear face (222) of the main plate (22) , as illustrated in Fig. 4c.
- the hinge (61) is arranged near 5 a centre of said plate (22) .
- the hinge may comprise a short robust axle through massive hinge eyelets arranged on top of the stem near the centre of the plate (22) as shown in Fig. lb and Fig. 3a.
- the gravity installed anchor (1) further comprises that said hinge (61) is arranged near a central part of an upper portion of said anchor plate (22) .
- An embodiment of the invention may constitute an intermediate
- the gravity installed anchor (1) may have a recess of generally concave or V- shape (63) for receiving at least an upper part (6) of said shank (0) in said rear face (222) of said plate (22).
- the recess (63) illustrated in Figs, lb and 3a may correspond to a ridge (64) on the opposite front face (221) as shown in Fig. lc .
- the ridge and recess (63, 64) along the main plate (22) increases the main plate's bending stiffness about a horizontal axis through the main plate. This allows increasing the area of the main plate (22) as compared to an allowable area of a plain plate without any such ridge or recess, thus increasing the bearing capacity of the installed anchor.
- a ridge may also be arranged on the rear face.
- the recess allows integration of the weight shank during installation in order to reduce the cross -section area of the descending anchor so as for reducing the resistance of the anchor in the drop phase in the water and down through the sediments .
- the recess (63) or at least the lower portion of the main plate (22) is provided with one or more guide fin or plate (224)
- This slot is for receiving said guide plate (224) so as for stabilising the weight stem and the main plate during the gravity installation process with the fall through the water and the penetration through the sediments, and also for stabilizing the main plate relative to the stem during the subsequent rotation when
- (224) may go through the shank as shown or may comprise two guide plates arranged in parallel with a separation equal to the local diameter of the shank such that the shank is not split or weakened in any way.
- connection points (8) are at least two.
- the connection points (8) are
- connection points (8) are for enabling to adjust and stabilize the azimuth of the anchor using the mooring line (17)] .
- the plate may be forced to rotate by tensioning the anchor line such as shown in Fig. 4c.
- the connection points (8) may in such an embodiment be arranged generally in a triangular pattern about the centre of said plate (22) , two of said connection points (8) arranged on either sides of said ridge (64) for being
- connection points (8) may be formed as one or more of the following :
- the anchor may be installed as follows:
- An anchor at least comprising a massive, rigid metal plate (22) with an installation connection point (9) for an installation line, preferably near a top edge end, is provided from a surface vessel, please see Fig. 4a.
- An anchor line (17) usually provided with two or more bridle lines (17a, 17b, 17c) is connected in a suitable way to one or more corresponding connection points (8) at a front face (221) of the plate (22) .
- An installation line (172) is attached to the installation connection points (9) ;
- the plate (22) is lowered to a desired elevation (h) above a usually predetermined position (x, y) on the seafloor, such as is the situation in Fig. 4a.
- the plate (22) is then preferably directed in an azimuthal direction transverse to a predetermined line of tension of said anchor line (17) , as this operation is necessary if the gravity installed anchor shall be used in a predetermined pattern about a desired mooring position.
- the plate (22) will then drop and penetrate said seafloor due to gravity, and will stop in the situation illustrated in Fig. 4b.
- the plate will generally now be nearly vertical, aligned with the shank.
- the installation line may still be connected to the tail of the anchor.
- the anchor line (17) is then put under tension along the above mentioned predetermined line of tension, please see Fig. 4c.
- the tensioning may be done immediately or completed with the
- an opposite end of said anchor line (17) is connected to a vessel to be moored, or connected to a buoy for being
- a floating or subsea marker buoy (173) may be attached to the installation line (172) for being used for retrieving the anchor if desired.
- the anchor line (17) is put under tension so as for tilting the plate (22) towards an orthogonal position relative to said anchor line (17) , please see Fig. 4c.
- the anchor line's connection may be arranged with the lower bridle line slightly shorter so as for forcing the anchor to plough deeper into the seabed if its present holding capacity is overcome.
- a fixed shank will, due to a longer vertical extension of the combined stem and plate, require a significantly higher
- the above discussed anchor of the invention may be used to make a mooring array of 8 to 12 or more anchors arranged in a pattern about a central predefined mooring location for a marine floating structure such as a drilling platform or petroleum production platform. Penetrometer Having predetermined weights of gravity installed anchors may
- a method for installing a gravity installed anchor (1) may thus comprise the following steps:
- the penetrometer (100) may be measured for its penetration depth and it may also carry instruments for measuring sediment properties such as consolidation and shear resistance, and it may- comprise a sediment core sampler.
- the penetrometer could be dropped and retrieved using the installation line.
- each anchor may prepare each anchor for each desired anchor installation position.
- Each anchor may thus be prepared or selected to reach a required minimum penetration depth. As the sediment conditions may vary from one position to another, this may save the number of anchors, reduce the required size of each anchor, determine the type of each anchor, determine the drop elevation of each anchor, or the ballast volume of each anchor.
- the method may also prevent anchors from ending up deeper than required, thus simplifying the tensioning of the anchor line and easing the adaptation of the anchor line [anchor chain] length for each anchor line.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37219510P | 2010-08-10 | 2010-08-10 | |
NO20101125A NO331792B1 (en) | 2010-08-10 | 2010-08-10 | A gravity-installed anchor and procedure for installing the anchor |
PCT/NO2011/000221 WO2012021067A1 (en) | 2010-08-10 | 2011-08-10 | Gravity installed anchor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2630027A1 true EP2630027A1 (en) | 2013-08-28 |
EP2630027B1 EP2630027B1 (en) | 2016-04-06 |
Family
ID=43798552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11749265.2A Not-in-force EP2630027B1 (en) | 2010-08-10 | 2011-08-10 | Gravity installed anchor |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130160694A1 (en) |
EP (1) | EP2630027B1 (en) |
NO (1) | NO331792B1 (en) |
WO (1) | WO2012021067A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116279996A (en) * | 2023-03-15 | 2023-06-23 | 天津大学 | Gravity penetration anchor with flexible anchor shank and ring wing |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013007237A1 (en) * | 2013-04-26 | 2014-10-30 | Rwe Innogy Gmbh | Method of producing a foundation pile for offshore structures and foundation pile for offshore structures and offshore construction with pile foundation |
US10435858B2 (en) * | 2013-09-03 | 2019-10-08 | Lawrence S. Maxwell | Modular grid foundation |
US11053655B2 (en) * | 2013-09-03 | 2021-07-06 | Lawrence S. Maxwell | Modular grid foundation |
BR112016022023A2 (en) | 2014-03-27 | 2017-08-15 | Intermoor Inc | METHOD FOR INSTALLING ONE OR MORE ANCHOR SYSTEMS, AND, ORIENTABLE ANCHOR SYSTEM |
KR101722186B1 (en) | 2015-07-29 | 2017-03-31 | 삼성중공업 주식회사 | Free fall type drop anchors |
KR101722206B1 (en) | 2015-07-29 | 2017-03-31 | 삼성중공업 주식회사 | Anchors |
KR101701474B1 (en) | 2015-08-21 | 2017-02-01 | 삼성중공업 주식회사 | Anchors |
KR101722166B1 (en) * | 2015-09-23 | 2017-03-31 | 삼성중공업 주식회사 | Anchoring apparatus |
RU178519U1 (en) * | 2017-12-21 | 2018-04-06 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | SOIL ANCHOR WITH REMOVABLE DRAW |
CN108423125B (en) * | 2018-05-14 | 2023-11-24 | 大连理工大学 | Novel light power installation anchor and installation method |
KR101953099B1 (en) * | 2018-06-26 | 2019-05-22 | 주식회사 디에이치오션 | Eco Water Anchor |
AU2020323950B2 (en) * | 2020-02-17 | 2022-01-06 | Dalian University Of Technology | Hybrid dynamically installed anchor with a folding shank and control method for keep anchor verticality during free fall in water |
CN114379713A (en) * | 2021-12-24 | 2022-04-22 | 天津大学 | Reduce split type gravity anchor of retrieving the degree of difficulty |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE336653A (en) * | ||||
FR2564120B1 (en) * | 1984-05-11 | 1986-11-14 | Inst Francais Du Petrole | ANCHORING DEVICE WITH ARTICULATED ELEMENT HAVING A BENT SHAPE |
JPS6268913A (en) * | 1985-09-20 | 1987-03-30 | Mitsui Kaiyo Kaihatsu Kk | Monitoring method for stud anchorage of exploiting apparatus for sea-bottom oil |
GB9508476D0 (en) * | 1995-04-26 | 1995-06-14 | Brupat Ltd | Mooring bed assessment apparatus and method |
BR9603600A (en) * | 1996-08-30 | 1998-05-19 | Petroleo Brasileiro Sa | Anchor plate type and its installation process |
ATE363428T1 (en) * | 1998-10-30 | 2007-06-15 | Brupat Ltd | ANCHORING DEVICE |
WO2004011327A1 (en) * | 2002-07-26 | 2004-02-05 | Francois Bernard | Sheet anchor |
US7117812B2 (en) * | 2003-10-30 | 2006-10-10 | Delmar Systems, Inc. | Apparatus and method for gravity anchor installation |
US7059263B1 (en) * | 2004-11-12 | 2006-06-13 | Delmar Systems, Inc. | Gravity installed anchor |
BRPI0601146A (en) * | 2006-04-10 | 2007-12-04 | Fluke Engenharia Ltda | floating structure anchor, method of installation and removal |
GB2469761B (en) * | 2008-02-20 | 2012-05-23 | Delmar Systems Inc | Method for installation of gravity installed anchor and mooring assembly |
-
2010
- 2010-08-10 NO NO20101125A patent/NO331792B1/en not_active IP Right Cessation
-
2011
- 2011-08-10 US US13/816,191 patent/US20130160694A1/en not_active Abandoned
- 2011-08-10 WO PCT/NO2011/000221 patent/WO2012021067A1/en active Application Filing
- 2011-08-10 EP EP11749265.2A patent/EP2630027B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2012021067A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116279996A (en) * | 2023-03-15 | 2023-06-23 | 天津大学 | Gravity penetration anchor with flexible anchor shank and ring wing |
CN116279996B (en) * | 2023-03-15 | 2023-08-29 | 天津大学 | Gravity penetration anchor with flexible anchor shank and ring wing |
Also Published As
Publication number | Publication date |
---|---|
EP2630027B1 (en) | 2016-04-06 |
NO331792B1 (en) | 2012-04-02 |
WO2012021067A1 (en) | 2012-02-16 |
US20130160694A1 (en) | 2013-06-27 |
NO20101125A1 (en) | 2012-02-13 |
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