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WO1982000675A1 - Dispositif de guidage d'un cordage - Google Patents

Dispositif de guidage d'un cordage Download PDF

Info

Publication number
WO1982000675A1
WO1982000675A1 PCT/US1980/001069 US8001069W WO8200675A1 WO 1982000675 A1 WO1982000675 A1 WO 1982000675A1 US 8001069 W US8001069 W US 8001069W WO 8200675 A1 WO8200675 A1 WO 8200675A1
Authority
WO
WIPO (PCT)
Prior art keywords
rope
housing
tower
recited
inner housing
Prior art date
Application number
PCT/US1980/001069
Other languages
English (en)
Inventor
Prod Res Co Exxon
Original Assignee
Hayes D
Brinkmann C
Finn L
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 Hayes D, Brinkmann C, Finn L filed Critical Hayes D
Priority to EP81901390A priority Critical patent/EP0058159B1/fr
Priority to AU72236/81A priority patent/AU537441B2/en
Priority to BR8009101A priority patent/BR8009101A/pt
Priority to JP81501890A priority patent/JPS57501292A/ja
Priority to PCT/US1980/001069 priority patent/WO1982000675A1/fr
Priority to CA000383354A priority patent/CA1162752A/fr
Priority to IT49132/81A priority patent/IT1171474B/it
Priority to ES504851A priority patent/ES8307961A1/es
Publication of WO1982000675A1 publication Critical patent/WO1982000675A1/fr
Priority to NO82821203A priority patent/NO155059B/no
Priority to MY687/86A priority patent/MY8600687A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • 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
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like

Definitions

  • the present invention concerns rope guiding devices and, in particular, rope guiding devices which are appli cable for guiding ropes used to anchor marine drilling and production structures.
  • guyed tower In the guying system for a guyed tower, guylines or ropes are run from the platform to anchor systems on the ocean floor. The guy ropes are secured at the platform deck by cable grips in a rope tensioning device and pass around deflecting devices or fairleads located below the water surface. The guy ropes then travel outwardly at an angle from the vertical to the anchoring system. In the past both sheave and shoe type rope-deflecting devices have been proposed for use at the tower-guy rope juncture.
  • Swivel type deflecting devices have been suggested for this purpose.
  • tensioning devices are located within the interior of the tower structure a deflecting device should be positioned within the interior of the tower directly below the tensioning device.
  • the use of a swivel type deflecting device would result in interferences between the rope and internal structural elements.
  • the problem then is to deflect a taut rope from the interior of the tower into the direction of the anchoring systems without interference from structural elements of the tower.
  • the direction of the anchoring systems to the deflecting device may not be known exactly and, further, may vary with time as the tower may rotate. Such deflecting must not damage the rope by excessive static or cyclic straining or by wearing and clearance requirements within the tower itself must be met .
  • a first member fixed in position within the tower bends the rope in a first plane to a predetermined degree.
  • a second member, also fixed in position on the periphery of the tower bends the rope in the first plane, if necessary, and, also, deflects the rope in a direction out of the first plane.
  • the fixed relative positions of the first and second members maintains a position of the rope which avoids any ob stacles within the tower and the second member completes deflection of the rope beyond the tower.
  • the first member is a shoe having a grooved, curved rope-contact surface and a sleeve.
  • the second member includes an outer fixed housing and an inner rotatable housing.
  • the inner housing contains the rope and is provided with a grooved rope-contact surface and other contact surfaces to accommodate for all rope directions and forces expected. Bearing means between the housings permit the inner housing to rotate, thus, increasing the size and variety of potential rope deflections.
  • the inner surface of the inner housing may have a triangular pyramidal configuration having rounded corners in which one of the corners of the pyramid forms the groove contact surface for the rope.
  • Fig. 1 is a schematic, longitudinal view of a guyed tower marine drilling and production structure
  • Fig. 2 is a top view of the marine structure shown in Fig . 1 ;
  • Fig. 3 is a schematic, longitudinal view illustrating the device of the invention in operational position on a guyed tower;
  • Fig. 4 is a view taken along lines 4-4 of Fig. 3;
  • Fig. 5 is a view taken along lines 5-5 of Fig. 3;
  • Fig. 6 is a schematic, longitudinal view illustrating one part of the rope guiding device of the invention secured to a peripheral structural member of the guyed tower;
  • Fig. 7 is a diagramatic top view of the rope guiding device of the invention in operational position within the guyed tower;
  • Fig. 8 is a diagramatic top view illustrating the use of several radially extending rope guiding devices on the guyed tower;
  • Fig. 9 is a cross-sectional view of another part of the rope guiding device showing a rope extending therethrough;
  • Fig. 10 is a view taken along lines 10-10 of Fig. 9; Figs. 10A and 10B are similar to the view illustrated in Fig. 10 but showing, respectively, opposing angular deflections of the rope;
  • Fig. 11 is another cross-sectional view of the other part of the rope guiding device illustrating, along with Figs. 12 - 17, more the design features of that part;
  • Fig. 12 is a view taken along lines 12-12 of Fig. 11
  • Fig. 13 is a view taken along lines 13-13 of Fig. 11
  • Fig. 14 is a view taken along lines 14-14 of Fig. 11
  • Fig. 15 is a view taken along lines 15-15 of Fig. 11
  • Fig. 16 is a view taken along lines 16-16 of Fig. 11
  • Fig. 17 is a view taken along lines 17-17 of Fig. 11
  • Fig. 18 is a diagramatic illustration of the manner in which the rope guiding device operates
  • Fig. 19 is a partial cross-sectional view of the other part of the rope guiding device illustrating one manner of initially pinning the fixed housing to the rotatable housing of that part;
  • Fig. 20 is a view taken along lines 20-20 of Fig. 19; and Fig. 21 is a view similar to that shown in Fig. 20 illustrating an alternative means for pinning the fixed and rotatable housings of the other part together
  • Figs. 1 and 2 illustrate an offshore drilling and producing platform 10 supported on a guyed tower 11 founded in the ocean floor 12 by piles (or a spud can or other type of foundation) indicated at 13.
  • a series of guylines or ropes 14 radiate outwardly from tower 11.
  • Each rope 14 is secured to the upper part of tower 11 at one end and to a suitable clump weight 15 and pile anchor or heavy drag anchor 16 on the ocean floor at the other end.
  • a more detailed description of the operation and functioning of marine structures of this type may be found in U. S. Patent No. 3,903,705 entitled "Apparatus for Anchoring Marine Structures" by R. W. Beck et al.
  • Tower 11 is constructed of a network of tubular structural members, as indicated. Also, production pipes extend upwardly through the interior of the tower and, in addition, many other apper tenances for support of those pipes and other required drilling and production equipment are located within the confines of the tower.
  • FIG. 3 there is illustrated a rope clamping and jacking (tensioning) device 20 supported on an interior portion of platform 10.
  • a deflecting or bending member or shoe 21 is suitably secured to tower 11, as indicated at 18, vertically below tensioning device 20, as shown.
  • shoe 21 includes a retainer member 22 containing a grooved, curved rope- contact surface 23 and a surrounding U-shaped sleeve 34.
  • Sleeve 24 holds rope 14 in place preparatory to tensioning, may contain anti-corrosion and/or lubricating material, as indicated at 25, and, as noted above, provides for attachment of shoe 21 to the tower.
  • a deflecting or bending member 26 is fixed in a position located below shoe 21 on the periphery of tower 11 which is indicated by line 27. It is secured, as indicated at 28 in Fig. 6, to peripheral support members 29 of tower 11. As seen also in Fig. 5, rope 14 extends in a straight line between the aligned lower end of fixed shoe 21 and the upper end of fixed member 26. Rope 14 is bent by member 26, as indicated at 30 and 31. It is also deflectable out of the plane of the bend of member 21.
  • Line 32 designates the center line of member 26 which is also the center line of shoe 21.
  • Fig. 7 The significance of the straight line design is apparent in the diagram of Fig. 7 where there are shown a plurality of production well (conductor) pipes 33 extending vertically within tower 11. Rope 14 must pass between those pipes, and avoid other appertenances within the tower. The relationship of rope 14 with respect to the interior clamping and jacking device 20, shoe 21 and member 26 are shown in this Figure.
  • Fig. 8 illustrates a complete arrangement of the several radially extending ropes 14, clamping and jacking devices 20, shoes 21 and members 26.
  • Deflecting member 26 is illustrated in more detail in Figs. 9, 10, 10A and 10B . It includes an outer (cone) housing 45, an inner (cone) housing 46, and bearings 47 between those housings.
  • Outer housing 45 attaches to the supporting structure as illustrated in Fig. 6.
  • Inner housing 46 contains rope 14, which is shown positioned in a groove 48, and furnishes contact surfaces suitable for all rope directions and forces expected. Bearings 47 transfer forces between housings 45 and 46 while permitting inner housing 46 to rotate, thereby increasing the size and variety of potential rope deflections.
  • FIG. 10 The moment arm is indicated by the arrowed line 55 in Fig. 10.
  • Arrowed line 56 indicates a force which causes rotation of housing 46 to the right as shown in Fig. 10A.
  • the configuration of the interior surfaces of housing 46 is also illustrated in Figs. 11 through 17.
  • the straight side surfaces 52 and 54 and curved surface 53 and rounded corners 48, 56 and 57 form a three- sided pyramidal configuration.
  • Fig. 17 shows the smallest end of the opening through housing 46 as being circular in shape it may be shaped as the opening is shown in Fig. 16 or Fig. 15. That end, in any event, is preferably larger than the size of rope 14 as shown in Fig. 9 and 10.
  • Lines 60 and 61 illustrate lines of departure of a taut rope 14 from groove surface 48 resulting from two different tensions applied to rope 14.
  • Line 63 indicates rope 14 in slack position.
  • Seal rings 70 may be provided between the housings at each end thereof to seal in the bearings.
  • the exterior surface of housing 46 and the interior surface of housing 45 may themselves comprise bearing surfaces which would make separate bearings unnecessary.
  • Fig. 18 The ability of the two-part rope guiding device to deflect the rope 14 is illustrated in Fig. 18.
  • Arrowed line 40 indicates the original rope direction
  • arrowed line 41 illustrates the orthogonal direction
  • numeral 42 designates the vertical plane of the shoe 21.
  • the angles alpha ( ⁇ ) , beta ( ⁇ ) and gamma refer to the bend of shoe 21, the bend of housing 46 in the plane of the shoe and rotation of housing 46 about its axis, respectively .
  • a bolt 71 threadable into housing 46 may be used to pin the two together.
  • a diver could release bolt 71 when the device is to be put into operation.
  • a remotely operated pinning device such as the piston-cylinder arrangement 72 controllable by a hydraulic line 73, may be used instead.
  • a shear pin could be used.
  • One manner of installing the device is to install shoes 21 and housing members 26 on the tower structure.
  • the ends of ropes 14 are attached to the anchoring system 15, 16.
  • Each rope 28 is then threaded through the housing member 26 and shoe 21 associated with it and connected at its upper end to cable grips connected into the tensioning device 20 on platform 10.
  • pinning means to pin outer housings 45 to inner housings 46 are used, the two housings are unpinned and ropes 14 made taut under catenary tension by tensioning devices 20.
  • the inner housing may be rotated manually to any desired position before, during or after initially tensioning the rope . Examples of some equipment sizes, angles and other dimensions which may be involved in an application of the rope guiding device described herein to guyed tower follows:
  • the geometry of the surface opposite groove 48 will depend upon the particular application of the device. The configuration is chosen to support slack rope 14 preparatory to tensioning without damaging the rope. Con sequently, while the preferred embodiment is illustrated with respect to guyed offshore drilling and production towers the principal of the invention is useful in other applications, marine or land. Although members 45 and 46 are shown conically shaped they may be formed cylin- drically, rectangularly or in other shapes. The axis of rotation of housing 46 need not necessarily be through the center of the line of rope 14 extended between members 21 and 26. While the device is shown and described as a two-piece rope guiding device, in some applications only one piece, the bending or deflecting member 26, may be used to compensate for any misalignment between two members connected together by a rope.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Gyroscopes (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Un dispositif de guidage ajustable en deux pieces d'un cordage (21, 26) est particulierement adapte pour etre utilise sur des structures de production et de forage d'une tour "off-shore" amarree (11). Sur de telles structures, il est necessaire de deflechir un cordage de retenue tendu (14) dans une direction qui peut ne pas etre connue de maniere precise ou qui peut varier avec le temps. Une telle deflexion ne doit pas endommager le cordage par des contraintes ou usures excessives statiques ou cycliques. Pour reduire au minimum les problemes de degagement de la structure le guidage s'effectue en deux parties: 1) une deflexion permanente dans une direction satisfaisant les besoins de degagement precites et 2) une deflexion variable depassant la deflexion se rapportant au degagement et completant la deflexion totale requise. Lorsque l'on guide les cordages de retenue (14) d'une tour de production de petrole "off-shore" (11) depuis leur orientation verticale au niveau des dispositifs de serrage et de verin (tension) sur la tour vers un systeme d'ancrage au fond de la mer (15, 16), un premier organe de flexion (21) change la direction verticale des cordages de retenue (14) vers une direction selectionnee (plane) s'etendant vers ce systeme d'ancrage (15, 16). Un second organe de flexion (26) fait tourner le cordage dans une nouvelle direction a la peripherie de la structure "off-shore" (11) pour accommoder les positions du systeme d'ancrage (15, 16) par rapport au plan de la direction choisie. Le premier organe est un patin fin (21) ayant une surface a rainure en contact avec le cordage (23) et un manchon (24). Le second organe (26) comprend une enceinte externe fixe (45) et une enceinte interne rotative (46) ayant une surface a rainure (48) en contact avec le cordage. La surface interne de l'enceinte interne (46) peut avoir differentes configurations en fonction de son application. Lorsqu'elle est utilisee avec un ancrage d'une tour haubanee, la surface interne possede de preference une configuration en pyramide a
PCT/US1980/001069 1980-08-21 1980-08-21 Dispositif de guidage d'un cordage WO1982000675A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP81901390A EP0058159B1 (fr) 1980-08-21 1980-08-21 Dispositif de guidage d'un cordage
AU72236/81A AU537441B2 (en) 1980-08-21 1980-08-21 Rope guiding device
BR8009101A BR8009101A (pt) 1980-08-21 1980-08-21 Dispositivo de guiagem de cabo
JP81501890A JPS57501292A (fr) 1980-08-21 1980-08-21
PCT/US1980/001069 WO1982000675A1 (fr) 1980-08-21 1980-08-21 Dispositif de guidage d'un cordage
CA000383354A CA1162752A (fr) 1980-08-21 1981-08-06 Guide-cable
IT49132/81A IT1171474B (it) 1980-08-21 1981-08-20 Dispositivo di guida per funi a tirante per sostegno di tralicci di sondaggio e perforazione
ES504851A ES8307961A1 (es) 1980-08-21 1981-08-20 Un dispositivo para guiar un cable que se xtiende en una primera direccion y en un primer plano.
NO82821203A NO155059B (no) 1980-08-21 1982-04-13 Linefoeringsinnretning.
MY687/86A MY8600687A (en) 1980-08-21 1986-12-30 Rope guiding device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
WOUS80/01069800821 1980-08-21
PCT/US1980/001069 WO1982000675A1 (fr) 1980-08-21 1980-08-21 Dispositif de guidage d'un cordage

Publications (1)

Publication Number Publication Date
WO1982000675A1 true WO1982000675A1 (fr) 1982-03-04

Family

ID=22154495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1980/001069 WO1982000675A1 (fr) 1980-08-21 1980-08-21 Dispositif de guidage d'un cordage

Country Status (9)

Country Link
EP (1) EP0058159B1 (fr)
JP (1) JPS57501292A (fr)
BR (1) BR8009101A (fr)
CA (1) CA1162752A (fr)
ES (1) ES8307961A1 (fr)
IT (1) IT1171474B (fr)
MY (1) MY8600687A (fr)
NO (1) NO155059B (fr)
WO (1) WO1982000675A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635768A1 (fr) * 1988-09-01 1990-03-02 Fischer Ag Georg Agencement de pieces de fonderie, notamment en acier moule, sur un noeud de liaison en structure moulee
WO1999002786A1 (fr) * 1997-07-11 1999-01-21 PRZEDSIEBIORSTWO POSZUKIWAN I EKSPLOATACJI Z$m(C)ÓZ ROPY I GAZU 'PETROBALTIC' Plate-forme non habitee pour l'extraction de mineraux au fond des oceans et modalites d'assemblage
US6431101B1 (en) 1997-06-30 2002-08-13 Single Buoy Moorings Inc. Vessel comprising a chain hawse having a chain support element

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986889A (en) * 1958-06-25 1961-06-06 California Research Corp Anchoring systems
CA689872A (en) * 1964-06-30 Howard L. Shatto, Jr. Apparatus for anchoring underwater vessels
US3552343A (en) * 1969-01-10 1971-01-05 Pan American Petroleum Corp Drilling ship mooring system
US3903705A (en) * 1974-01-24 1975-09-09 Exxon Production Research Co Apparatus for anchoring marine structures
US3934528A (en) * 1974-06-03 1976-01-27 Deep Oil Technology, Inc. Means and methods for anchoring an offshore tension leg platform
US4020779A (en) * 1976-05-19 1977-05-03 Skagit Corporation Chain/wire rope connector assembly for anchor
US4037424A (en) * 1975-10-03 1977-07-26 Anders Edward O Offshore drilling structure
US4108102A (en) * 1975-12-19 1978-08-22 Karlskronavarvet Ab Anchorable, floating platform
US4170186A (en) * 1976-06-21 1979-10-09 J. Ray Mcdermott & Co., Inc. Anchored offshore structure with sway control apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571328A (en) * 1943-12-22 1945-08-20 Knute Berger Fairlead housings of ships
GB1495174A (en) * 1976-04-13 1977-12-14 Laird Group Ltd Fairleads

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA689872A (en) * 1964-06-30 Howard L. Shatto, Jr. Apparatus for anchoring underwater vessels
US2986889A (en) * 1958-06-25 1961-06-06 California Research Corp Anchoring systems
US3552343A (en) * 1969-01-10 1971-01-05 Pan American Petroleum Corp Drilling ship mooring system
US3903705A (en) * 1974-01-24 1975-09-09 Exxon Production Research Co Apparatus for anchoring marine structures
US3934528A (en) * 1974-06-03 1976-01-27 Deep Oil Technology, Inc. Means and methods for anchoring an offshore tension leg platform
US4037424A (en) * 1975-10-03 1977-07-26 Anders Edward O Offshore drilling structure
US4108102A (en) * 1975-12-19 1978-08-22 Karlskronavarvet Ab Anchorable, floating platform
US4020779A (en) * 1976-05-19 1977-05-03 Skagit Corporation Chain/wire rope connector assembly for anchor
US4170186A (en) * 1976-06-21 1979-10-09 J. Ray Mcdermott & Co., Inc. Anchored offshore structure with sway control apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635768A1 (fr) * 1988-09-01 1990-03-02 Fischer Ag Georg Agencement de pieces de fonderie, notamment en acier moule, sur un noeud de liaison en structure moulee
US6431101B1 (en) 1997-06-30 2002-08-13 Single Buoy Moorings Inc. Vessel comprising a chain hawse having a chain support element
WO1999002786A1 (fr) * 1997-07-11 1999-01-21 PRZEDSIEBIORSTWO POSZUKIWAN I EKSPLOATACJI Z$m(C)ÓZ ROPY I GAZU 'PETROBALTIC' Plate-forme non habitee pour l'extraction de mineraux au fond des oceans et modalites d'assemblage

Also Published As

Publication number Publication date
JPS57501292A (fr) 1982-07-22
BR8009101A (pt) 1982-06-22
EP0058159B1 (fr) 1985-03-20
MY8600687A (en) 1986-12-31
NO155059B (no) 1986-10-27
EP0058159A4 (fr) 1983-01-14
ES504851A0 (es) 1983-07-01
IT8149132A0 (it) 1981-08-20
IT1171474B (it) 1987-06-10
CA1162752A (fr) 1984-02-28
EP0058159A1 (fr) 1982-08-25
ES8307961A1 (es) 1983-07-01
NO821203L (no) 1982-04-13

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