EP2148974B1 - Boden-oberflächen-verknüpfungsausrüstung mit einem flexiblen link zwischen einem schwimmenden träger und dem oberen ende eines unterwasserrohrs - Google Patents

Boden-oberflächen-verknüpfungsausrüstung mit einem flexiblen link zwischen einem schwimmenden träger und dem oberen ende eines unterwasserrohrs Download PDF

Info

Publication number
EP2148974B1
EP2148974B1 EP08805852A EP08805852A EP2148974B1 EP 2148974 B1 EP2148974 B1 EP 2148974B1 EP 08805852 A EP08805852 A EP 08805852A EP 08805852 A EP08805852 A EP 08805852A EP 2148974 B1 EP2148974 B1 EP 2148974B1
Authority
EP
European Patent Office
Prior art keywords
floating support
pipe
top end
rigid pipe
bar
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.)
Not-in-force
Application number
EP08805852A
Other languages
English (en)
French (fr)
Other versions
EP2148974A2 (de
Inventor
Floriano Casola
Garry P. Mahoney
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.)
Saipem SA
Original Assignee
Saipem SA
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 Saipem SA filed Critical Saipem SA
Publication of EP2148974A2 publication Critical patent/EP2148974A2/de
Application granted granted Critical
Publication of EP2148974B1 publication Critical patent/EP2148974B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • E21B43/0107—Connecting of flow lines to offshore structures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/015—Non-vertical risers, e.g. articulated or catenary-type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
    • E21B19/006—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform including heave compensators

Definitions

  • the present invention relates to a bottom-surface connection installation comprising at least one underwater pipe providing the connection between a floating support and the seabed, particularly at great depth.
  • These rigid subsea pipes are called “risers” or “risers” as explained below, these risers consisting of unitary tubular elements welded together end to end, made of steel.
  • the present invention relates to a bottom surface connection installation of a submarine pipe resting at the bottom of the sea comprising a rigid pipe rising from the seabed where it rests, to the subsurface where its upper end is connected to a floating support by a mechanical connection comprising a flexible link and a flexible pipe for transferring the fluid from the rigid pipe to a floating support.
  • the technical sector of the invention is therefore the field of the manufacture and installation of subsea pipelines and more particularly bottom-surface production links for the underwater extraction of oil, gas or other soluble material. or fuse, or a suspension of mineral material, from submerged wellhead for the development of production fields installed offshore at sea.
  • the main and immediate application of the invention being in the field of oil production, as well as in the re-injection of water and the production or re-injection of gas.
  • a floating support generally comprises anchoring means to remain in position despite the effects of currents, winds and waves. It also generally comprises means for drilling, storage and treatment of oil and means of unloading to oil tankers, the latter presenting itself at regular intervals to perform the removal of production.
  • the name of these floating supports is the Anglo-Saxon term “Floating Production Storage Offloading” (meaning “floating means of storage, production and unloading") which will be used the abbreviated term "FPSO” throughout the description FDPU or Floating Drilling & Production Unit), where the floating support is also used to carry out drilling operations with deviated wells in the height of the slice. of water.
  • An underwater pipe, or a riser, according to the invention can be either a "production line” of crude oil or gas, or a water injection pipe, ensuring the connection with a sub-wellhead. marine installed at the bottom of the sea, is still a “drilling riser” ensuring the connection between the floating support and a wellhead located at the bottom of the sea.
  • the bottom-surface connection pipe When the bottom-surface connection pipe is of the catenary type, it directly ensures the connection between a floating support and a contact point at the bottom of the sea which is offset with respect to the axis of said support, said pipe takes by its own weight a so-called "chain" configuration, forming a curve whose radius of curvature decreases from the surface to the point of contact at the bottom of the sea, and the axis of said pipe forms an angle with the vertical whose value generally varies from 5 to 20 degrees at the floating support up to, theoretically, 90 degrees at the seabed corresponding to a theoretical position substantially tangential to the horizontal as will be explained below.
  • Chain links are usually made with the aid of flexible pipes, but their cost is extremely high due to complex structure of the pipe.
  • Step Catenary Riser meaning "chain-shaped steel riser” whose abbreviated term “SCR” or “SCR” will be used.
  • catenary riser in the present description, whether steel or other material such as a composite material.
  • the curvature varies continuously along the chain from the surface, or its radius has a maximum value R max , up to the point of contact, or its radius has a minimum value R min (or R 0 in the formula above) .
  • R max maximum value
  • R min minimum value
  • the pipe has a radius of curvature which is maximum at the top of the chain, generally at least 1500, in particular from 1500 to 5000m, ie at the point of suspension on the FPSO, and which decreases until at the point of contact with the ground. At this point, the radius of curvature is minimal in the suspended portion. But, in the adjacent part resting on the bottom of the sea, said pipe being theoretically in a straight line, its radius of curvature is theoretically infinite. In fact, this radius is not infinite but extremely high, because there remains a residual curvature.
  • the contact point moves back and forth and, in the raised area or rested on the bottom, the radius of curvature successively passes from a minimum value R min to a extremely high value or even infinite in the case of a theoretical configuration where the underwater pipe rests on the bottom of the sea substantially in a straight line.
  • the floating support is anchored in general by 8 or 16 rows of anchors usually equally distributed and located in the corners. Under the effect of wind and current, the floating support moves inside a surface called "excursion circle", substantially elliptical or circular and substantially centered with respect to its position. resting. And, we try to minimize the size of this circle excursion by playing on the stiffness of the anchors. Thus, it is common to provide the anchors to limit the excursion of the floating support in a radius of 5-6% of the water height. Thus, for a water depth of 1500m, the excursion circle will have a radius of 75-90m.
  • the second type of movement is due to the heave of the floating support which occurs over several meters and then generates vertical movements of the riser. These dynamic movements are much more prejudicial because they have a much shorter period, between 3-5 seconds and 15-18 seconds. And in addition, certain frequencies between the extreme values, correspond to the resonance frequencies of the riser in the chain configuration, which has the effect of considerably amplifying the deformations of said chain, and thus the movements and risks of damage to the foot chain, at the point of contact.
  • a flexible flexible joint device On the surface, at the level of the connection of the riser head with the floating support, a flexible flexible joint device called “flexjoint” is generally installed, so as to absorb the angular variations of the top of the riser, during the movements of the support floating.
  • These "flexjoints” consisting mainly of elastomers, especially in the form of laminated abutments with a surface of revolution, serve not only to take up the traction forces generated by the riser, but also to transfer the crude oil to the rigid pipes. integral with the floating support.
  • These laminated abutment hinge devices of the "flex joint” type have an additional advantage in that they imply a reduced lateral space requirement and thus make it possible to connect a large number of risers side by side along the edge of the floating support.
  • the connection of the riser head with the floating support is difficult to achieve because it involves the implementation of large capacity winches able to handle rigid pipes whose weight can reach 500t, on board the floating support and that it is necessary to move said winch when it is desired to set up a multiplicity of riser connected to the floating support as is the case in practice.
  • the laminated abutment hinge devices mentioned above make the connection of the riser head on the floating support all the more difficult to achieve.
  • the object of the present invention is to provide an improved bottom surface connection installation comprising a rigid pipe or riser rising from the seabed to a floating support whose connection of the riser head with the floating support is at the mechanically reliable, simpler to achieve and that more generally to overcome the disadvantages mentioned above.
  • an object of the present invention is to provide a bottom-surface bonding installation as defined above making it possible to preferably allow the movements of the riser to be attenuated, so as to minimize the harmful consequences of the movements of the floating support and the riser head, more particularly the heave movements, thereby to increase the fatigue strength of said bottom-surface connection.
  • an object of the present invention is to provide a bottom-surface linkage installation as defined above having a minimum lateral bulk along the side of the barge, thereby allowing the installation of a plus one. a large number of risers along said plating, for the same distance.
  • an object of the present invention is to provide a bottom-surface connection installation comprising a safety device, which, in the event of an incident or breakage of an upper retaining element, maintains the riser in a configuration of backup, thus avoiding the rupture of the flexible link and the resulting pollution.
  • the flexible link thus combined with said flexible pipe allows movements of the riser head while limiting them by the tension exerted by said flexible link on the riser head, which reduces fatigue and wear of the rigid pipe to its point of attachment with the floating support and allows to eliminate or avoid the implementation of a laminated stop joint type joint for mechanical connection and transfer of fluid between the floating support of the riser head.
  • the curvature of the flexible pipe has an inverted double curvature with an inflection point preferably located at said retaining point, which allows said flexible pipe to follow the limited movements of the riser head without undergoing any damage. detrimental traction and with limited space compared to the traditional flexible plunging pipes implemented, the latter having a variable curvature without inversion of the curvature, that is to say without inflection point.
  • the retention of the flexible pipe above the riser head avoids damage to the flexible pipe during the movements of the riser head and limits the lateral movements of the flexible pipe and thus the bulk which authorizes the establishment of a greater number of bottom-to-side bond side by side.
  • the invention also makes it possible to facilitate the connection of the riser head to the floating support without requiring the use of a winch of high capacity, difficult to move on the floating support, but by using such winches only at edge of the laying ship.
  • the invention makes it possible to limit the movements in the zone of the riser foot, and thus limit the formation of a groove at the bottom of the sea, which makes it possible to reduce the cumulative fatigue in the foot zone of the riser in a big way.
  • the safety and guiding device guides the movements of the riser head and protects said flexible pipe in case of rupture of said flexible link.
  • said bar facilitates the installation of the installation and in particular the connection of the end of said flexible link to the floating support.
  • said safety and guiding device provides a mechanical connection of variable length between the floating support and the upper end of the rigid pipe, making it possible to vary the distance between the point of attachment of said first joint on the floating support and the upper end of said rigid pipe.
  • said safety and guidance device comprises at least one said first telescopic bar, the variation of the sliding of said first bar making it possible to vary the distance between the point of attachment of said first articulation on the floating support and the upper end of said pipe rigid, this distance remaining less than the length of said flexible pipe.
  • said safety and guidance device comprises a said first bar articulated by a first articulation at one end at its point of attachment to the floating support and by a second articulation at the other end at the level of said flexible link. the ends are fixed respectively to the upper end of the riser and to a point of attachment on said floating support.
  • said flexible link may consist of two lengths of links whose junction is provided at said second joint.
  • said flexible pipe is retained by at least one point, preferably two retention points respectively at said first bar and at said flexible link between the upper end of the rigid pipe and said second joint.
  • said safety and guiding device comprises at least two first and second safety bars hinged together by a said second hinge and at their ends by a said first hinge at the end of said first hinge. bar at the floating support and a third articulation at the end of the second bar at the upper end of the rigid pipe, said first bar being preferably telescopic, the variation of the inclination of the two said bars relative to one another, and preferably the sliding extension of said first bar for varying the distance between on the one hand the point of attachment of said first hinge of said first bar on the floating support and on the other hand the point of attachment of the third articulation of said second bar to the upper end of said rigid pipe.
  • said flexible link is fixed at one end at the central joint or said second joint between the two said bars and at the other end at a point of attachment to said floating support.
  • said flexible pipe is retained by at least two holding points respectively at said two bars. This makes it possible to maintain an inverted double curvature of said flexible pipe more reliably.
  • the maximum distance from said link corresponds to the maximum length of said telescopic bar in maximum extension and / or respectively to the cumulative length of the two said bars.
  • said first articulation at the hook of said first bar to the floating support only allows a rotation of said first bar relative to an axis parallel to the edge of the floating support, said axis YY being horizontal when said floating support is in the rest position, so as to maintain the axis XX of the upper part of the rigid pipe in a plane substantially perpendicular to said edge of the floating support.
  • This latter embodiment is advantageous because it reduces the lateral size of the installation in case of movements of the upper end of the rigid pipe and the floating support.
  • said third articulation is a ball joint allowing rotations in all directions.
  • the safety and guiding device comprises two said first bars arranged parallel on either side of the axial plane of a single said second bar and the said second joints are integral with a plate which is itself integral with the end. of said second bar.
  • said flexible link consists of a so-called first cable, itself preferably consisting of thermoplastic fibers having elastic characteristics or comprising or cooperating with at least one elastic damping device, said elastic damping device taking up the tension of said rigid pipe at its upper end, and allowing the variation of the distance between the upper end of the rigid pipe and the floating support, while maintaining said first cable or said string tensioned.
  • the device damping elastic according to the invention makes it possible to soften the connection between the upper end of the rigid pipe and the floating support by reducing the tension at the upper end of the rigid pipe by increasing or decreasing the distance between the upper end of the rigid pipe and the floating support.
  • the present invention thus makes it possible to radically reduce the fatigue and wear of the rigid pipe at its point of contact with the seabed and at its point of attachment with the floating support.
  • the elastic damping device makes it possible to limit the movements in the zone of the riser foot, and thus to limit the formation of a groove at the bottom of the sea, which makes it possible to reduce cumulative fatigue in the foot zone of the riser in a considerable way.
  • the displacement of the upper end of the rigid pipe is related to the possible extension or retraction of the elastic damping device by its elastic properties.
  • said elastic damping device is fixed on said floating support and said flexible link ensures the connection between the damping device and a rigid element of said mechanical connection between the upper end of the pipe and the floating support, preferably said rigid element being a said second articulation of a said safety bar, preferably a so-called first articulation between said two safety bars of a safety device.
  • the elastic damping device is positioned in alignment with the upper end of the rigid pipe, either directly secured thereto, or integral with the floating support, but without the flexible link being cooperates with a return pulley on said floating support.
  • positioning in the alignment of the upper end of the rigid pipe is meant that the elastic device extends or retracts, and / or the point of attachment of said flexible link with said elastic device moves in a longitudinal direction substantially corresponding to that of the axial direction of said rigid pipe at its upper end.
  • This embodiment is advantageous because it makes it possible to reduce the fatigue and wear problems of said cable, which are created at the level of the windings on the return pulleys, because of the extremely high tension existing in said cable.
  • an elastic damping device essentially reduces the vertical movements of the upper end of the rigid pipe induced by heave movements. of the floating support, and the variations of tension of the shortest most detrimental periods which result from it.
  • an elastic damping device has substantially little effect on so-called quasi-static movements of the head of the riser related to lateral or horizontal excursion of the floating support as described above.
  • said rigid pipe is a catenary type pipe going up from the seabed to said subsurface in a chain curve having a curvature substantially continuously variable to its upper end.
  • said flexible pipe is connected to the upper end of the rigid pipe by a device comprising a bent pipe element.
  • a device comprising a bent pipe element.
  • said resilient damping device comprises a spring-type mechanical elastic device or washers called “belleville” or a hydraulic pneumatic elastic device of the hydraulic cylinder type.
  • an installation according to the invention comprises a resilient mechanical damping device comprising biconical elastic elements comprising frustoconical washers of the Belleville type, preferably consisting of pairs of frustoconical washers of belleville type arranged axially and inversely, suitable for to deform elastically axially, threaded around a first axial rigid rod contained in a cylindrical chamber to a prestressing state, so as to form a stack of said washers retained on one side by a stop at one end of said first rigid rod axial and on the other side by one of the end walls of said cylindrical enclosure, end wall through a perforation of which the other end of said first rigid rod is able to move, said other end of the first rigid rod being connected to said upper end e rigid driving.
  • Said frustoconical washers called "belleville washers” are grouped in pairs forming biconical elements, said successive washers being disposed axially inversely alternately, that is to say the small bases of the two frustoconical washers of the pair being one against the other while the large bases of the two frustoconical washers of a pair are adjacent to other large frustoconical washer bases of an adjacent pair slipped on the same rod.
  • This damping device with frustoconical washers will thus always have an exit rod length capable of giving flexibility searched between the floating support and the upper end of the rigid pipe.
  • said initial prestressing tension and maximum abutment tension of said elastic damping device substantially correspond to the tension values delimiting a flattening zone of the force / displacement curve representing the voltage variation in the damping device as a function of the length of said first rod output from said chamber, flattening zone in which the variation of the displacement of said first rod is maximum for a given voltage variation exerted on said first rod .
  • said elastic mechanical damping device comprises a spring combined with a return pulley and a counterweight, one end of said spring being rigidly attached to a said point of attachment on said floating support and the other end. said spring being fixed to said counterweight, said flexible link ensuring the connection between said counterweight and said upper end of rigid pipe passing through said first return pulley.
  • This embodiment makes it possible to implement springs taking up only part of the tension at the upper end of the rigid pipe, the remainder, namely the greater part of said tension being taken up by said counterweight, said spring allowing only to soften the voltage variations by variations in distance between the upper end of the rigid pipe and the floating support, the tension at the end of the rigid pipe when the floating support is at rest being taken up by said counterweight .
  • said elastic damping device is a hydro-pneumatic device comprising a hydraulic jack fixed on the floating support, combined with a hydro-pneumatic energy storage system, making it possible to control the displacement of the cylinder rod, said first cable or chain being fixed to the upper end of said rigid pipe and cooperating with the ends of said rigid cylinder rod, so that a traction exerted by the upper end of the rigid pipe on said first cable or chain is taken up by a thrust exerted by the cylinder rod under the effect of the hydraulic pressure supplied by said hydraulic energy accumulator system, said thrust of the cylinder rod exerting an opposite traction on said first cable or chain taking up the tension exerted by the upper end of said rigid pipe.
  • the average extension of the jack rod corresponds to a thrust resuming the tension exerted on the upper end of the rigid pipe when the floating support is at rest and the maximum extension, respectively minimum, of the cylinder rod. corresponds to a thrust taking again the tension exerted by the upper end of the rigid pipe corresponding to the movements of maximum distance of the barge, respectively of maximum approach in the direction of the point of contact in foot of riser.
  • said jack rod cooperates with at least one second return pulley secured to the end of the cylinder rod, said second return pulley cooperating with said first cable or chain.
  • said second return pulley sends a return of the flexible link between its first end fixed to the upper end of the rigid pipe and its second end fixed to the floating support.
  • said first cable and, if appropriate, said damping device are capable of resuming voltages at the upper end of said rigid pipe from 50 to 750 T, preferably 100 T to 250 T.
  • said first cable and, if appropriate, said damping device allow said displacements of the upper end of said rigid pipe, capable of damping voltage variations at the upper end of said rigid pipe, said variations representing up to at 20% of the resting tension at said upper end of the rigid pipe, that is to say when the floating support and the upper end of the rigid pipe are at rest.
  • said first cable and, if appropriate, said elastic damping device is able to allow variations in distance between the upper end of the rigid pipe and the floating support or displacements in the axial direction XX of the upper end of the rigid pipe from 1 to 10 m, preferably from 2 to 5 m, preferably for voltage variations at the upper end of the rigid pipe from 5 to 150 T.
  • the upper end of said rigid pipe is located in a subsurface at a depth of 20 to 60 m.
  • said flexible pipe has a length of 20 to 400 m
  • said flexible link has a length of 10 to 300m, and where appropriate the safety device and guide can extend over a length of 1.5 to 25 m.
  • a side-surface connection 1 of SCR type is shown in side view, suspended on a floating support 10 of the FPSO type anchored at 11, and resting on the bottom of the sea 13 at the point of contact 14.
  • the curvature varies along the chain from the surface, or its radius has a maximum value, up to the point of contact, or its radius has a minimum value R.
  • the floating support 10 moves, for example from left to right as shown in the figure, which has the effect of lifting or resting the chain-shaped pipe at the seabed.
  • the floating support deviates from the normal position 10-1, which has the effect of straightening the chain 1c by lifting it, and moving the point of contact 14 to the right of 14a in 14c ; the radius of curvature at the foot of the chain increasing from R 0 to R 2 , as well as the horizontal tension in the pipe generated at said point of contact at the bottom of the sea, as well as the tension in the pipe at the head of the riser at level of said floating support.
  • the rightward movement of the floating support has the effect of relaxing the catenary 1b and a rest part of the pipe on the bottom of the sea.
  • the radius R 0 at from the point of contact 14a decreases to the value R 1 at 14b, as well as the horizontal tension in the pipe at the same point 14b, as well as the tension in the pipe at said floating support.
  • the radius of curvature of the pipe is minimal in the portion in suspension, but in the adjacent part resting on the bottom of the sea, said pipe being theoretically in a straight line, its radius of curvature is theoretically infinite. In fact, this radius is not infinite but extremely high, because it generally remains a residual curvature.
  • the variation of the radius of curvature at 14 creates considerable internal stresses within the structure of the pipe, which generates cumulative fatigue phenomena that can eventually lead to the ruin of the bottom-surface bond.
  • Curve 12 represents the combination of quasi-static 12a and dynamic 12b variations over a quasi-static period of 200-300 seconds.
  • T / 4 50-75 seconds.
  • the damping device according to the invention acts as a filter for the high frequencies corresponding to the dynamic movements, but has substantially little effect on the low frequencies corresponding to the quasi-motions. -static.
  • FIG. 3A to 3D different embodiments of a bottom-surface connection installation according to the invention have been shown comprising the upper end 11 of a rigid pipe 1 going up from the seabed 13, on which it rests, up to subsurface where its said upper end 1 1 is connected to a floating support 10 (hereinafter also called “barge”) by which said rigid pipe is a catenary type pipe (“SCR”) rising from the seabed 13 to said surface along a chain curve having a curvature substantially continuously variable up to said upper end.
  • a floating support 10 hereinafter also called “barge”
  • SCR catenary type pipe
  • the upper end 1 1 of the rigid pipe 1 is connected to the floating support by a flexible link or said first cable 3 itself attached to the floating support at a mounting plate 7.
  • This first cable 3 ensures a simple mechanical connection between the upper end of the rigid pipe 1 1 and the floating support.
  • a flexible pipe 2 adapted to allow the transfer of the fluid conveyed by the rigid pipe 1 to the floating support, is connected to the upper end of the rigid pipe 1 by means of a device comprising a bent pipe portion 6, 1 other end of the flexible pipe being connected to ends of pipes on board the floating support at the attachment plate 8.
  • the flexible pipe is entirely located above its point of connection at the bent device 10 with the upper end of the rigid pipe and adopts a curved shape position with an inverted double curvature, said flexible pipe being retained by a retainer 2a at the first cable 3 to do this.
  • said first cable 3 may represent a length of 10 to 300 m. If it is desired to confer on the first cable 3 elasticity properties in order to dampen and soften movements at the top of the riser head, it may be advantageous to use a cable consisting of bullets of 100 to 300 mm made of thermoplastic fiber, such as those commonly used for mooring floating structures. These bullets are able to withstand loads of several hundred tonnes. They have a high elasticity and their length from 100 to 200 m allows to provide a movement by elasticity of several meters if necessary in the voltage range concerned. It is understood that the length of the flexible pipe is adapted as a function of the length of said first cable 3.
  • FIG 3B there is shown a bottom surface connection installation of the type of the figure 3 , but further comprising a safety device and guide 5, consisting of a telescopic bar 5a.
  • the telescopic bar 5a comprises two sliding elements one in the other 5a1 and 5a2, the first element a tubular body 5a1 is integral at one of its ends with the floating support by a first articulation 5d, the second telescopic bar element, a sliding rod 5a2 sliding inside the first element 5a1 as explained below, with reference to Figures 8A to 8C .
  • the telescopic bar 5a is in the form of a hydraulic cylinder with a tubular body 5a1 and a sliding rod 5a2 associated with a piston 5a3 coming into abutment at the end of the tubular body 5a1 5a4 when the sliding rod 5a2 is in complete extension to the outside.
  • the free end of the sliding rod 5a2 is connected to the first cable 3 by a second articulation 5c.
  • the first cable 3 may consist of two slings 3 1 and 3 2 providing the connection between the second articulation 5c and the attachment point 7 to the floating support is for sling 1 and 3 the 5c connection between the second joint and the upper end 1a 1 of the rigid pipe to the second sling 3 2.
  • the second hinge 5c is attached to the upper end of the rigid pipe directly, but this embodiment involves a larger telescopic bar implementation.
  • the flexible pipe 2 is held above the upper end of the rigid pipe by adopting a position in shape at least doubly curved and having a point of inflection, thanks to 2 retaining points where the flexible pipe is held by holding elements 2a on the first sling 3 2 and retaining member 2b at the level of 5a1 tubular body of the telescopic bar 5a.
  • the telescopic bar 5a serves as a guiding and safety device. It makes it possible in fact by controlling the sliding of the telescopic bar to control the movements of the first cable 3 and thus the riser head as needed.
  • the configuration of the joints of said first 5d and second articulation 5c also serves to guide the movements of the upper portion of the rigid pipe 1 relative to the floating support and in particular to maintain the axis XX of the upper part of the rigid pipe 1 in a plane substantially perpendicular to the plating 10 1 of the floating support.
  • the first articulation 5d only allows rotation in a plane perpendicular to the plating 10 1 , that is to say around an axis parallel to the plating 10 1 and substantially horizontal when the floating support and the sea-are at rest, that is to say substantially parallel to the upper platform 10 2 of the floating support.
  • the second articulation 5c is preferably in the form of a ball joint thus allowing rotations in all directions, so as to avoid twisting, kinking or bending which could damage the first cable 3.
  • the telescopic bar 5a is also a security incident or breakage of the first cable 3 1, for example at attachment point 7 to the floating support, thus avoiding that the voltage is taken over by the flexible pipe 2 in such a case of rupture, insofar as the length of the flexible pipe is greater than the maximum possible distance between the upper end at the device 6 of the rigid pipe 1 and the point of attachment 8 at the other end of the flexible pipe, in case of maximum extension of the telescopic bar and alignment thereof with the sling 3 2 .
  • the safety device comprises two articulated bars 5a and 5b, as represented on the figure 3c .
  • the second articulation 5c serving as articulation between the two articulated bars 5a and 5b, the second bar 5b being non-telescopic and being itself articulated at its other end by a third articulation 5e at the upper end 1 1 of the rigid driving.
  • the flexible pipe is retained by the retaining elements 2a at the second bar 5b and 2b at the first telescopic bar 5a.
  • This embodiment provides additional security with respect to the figure 3b insofar as there is no risk of rupture at the level of the third sling 3 2 .
  • the second bar 5b reinforces the guiding of the upper part of the rigid pipe 1 in its movements by the stiffening of the mechanical connection between the upper end 1 1 of the rigid pipe and the second articulation 5c connected to the point of attachment 7 of the floating support by the first cable 3.
  • the safety device comprises in fact two first bars 5a hinged at a first hinge 5d on the plank 10 1 of the floating support and providing a telescopic connection with the plate 5f secured to the end of the second bar 5b and supporting said second joints 5c at the end of each of the rods 5a2 of the first telescopic bar 5a (not shown in FIG. 3D figure ).
  • the plate 5f is supported by 5g reinforcement elements.
  • This embodiment with two said first telescopic bars 5a arranged parallel on either side of the axial plane of the single second non-telescopic bar 5b reinforces the guiding of the end of the upper portion of the rigid pipe 1 in a plane substantially perpendicular to the plane of the plating 10 1 .
  • Said second joints 5c at the end of the sliding rods 5a2 of each of the first bars 5a do not allow also that a rotation about an axis parallel to the plane of the plating 10 1 and the plate 5f, as well as to the upper platen 10 2 of the floating support, that is to say is in substantially horizontal position when the floating support and at rest, the sea being also at rest.
  • said first telescopic bars 5a are in an intermediate position, as shown FIGS. 3A to 3C and the first cable 3 is in a position substantially in a straight line with respect to the second bar 5b and the upper end 11 of the rigid pipe 1.
  • hydraulic cylinder variants constituting said first telescopic bars 5a have been shown comprising a hydraulic device making it possible to avoid an excessive impact of the piston 5a3 on the abutment 5a4 at the end of the tubular body 5a1 in the case of use of the device safety, that is to say breaking the cable 3 if necessary.
  • the movements of the sliding rod 5a2 are damped by throttling devices 6a and anti-return valve 6b for controlling in a known manner respectively the output and the retraction of rod.
  • a small hydro-pneumatic accumulator 6c makes it possible to absorb the variations in the volume of oil in the hydraulic lines 6 coming from the two chambers 5a5 and 5a6 of the hydraulic cylinder.
  • any displacement of the piston 5a3 causes a variation of the differential volumes of oil-expelled and sucked into the one and respectively the other chamber of the chambers 5a6 and 5a5, the excess oil can be managed by the device and the hydro-pneumatic accumulator 6c.
  • These hydraulic devices for controlling the movements of the telescopic bar 5a are well known to those skilled in the art.
  • FIG. 6A to 6C there is shown the attachment of a riser head 1 on a floating support 10 at a point of attachment 8 on the plating 10 1 of the floating support from a surface vessel 9 serving as a pipe laying at sea.
  • the riser head 1 1 is moved from the laying ship to the floating support by means of cables.
  • the attachment of the riser head at 8 along the plating 10 1 of the floating support requires the implementation of traction units such as winches 10 3 extremely powerful and bulky on the platform 10 2 which allow by the intermediate cable 15 to progressively transfer the riser head to the floating support.
  • this traction unit 10 3 Due to the multiplicity of risers installed side by side along the plating, this traction unit 10 3 must be successively moved from one location to riser to the next, which greatly complicates the organization of this area of the floating support, already heavily encumbered by the various pipes as well as reinforced structural structures capable of taking each effort of several hundred tons.
  • the safety-guiding device 5 makes it possible to facilitate the grip of the riser heads insofar as the riser head is offset with respect to the plating and connected thereto by a mechanical double bond 3 and transfer of 2.
  • the safety device comprising the first two bars 5a and second bars 5b comprising a first hinge 5d ensuring the attachment of the end of the first bar 5a at the plating 10 1 and comprising a second hinge 5c allowing the articulation relative to one another of the two bars 5a and 5b, facilitates the implementation place flexible links 3 and flexible pipe connections 2 at the upper end 1 1 of the rigid pipe.
  • the installation vessel is used to perform all phases requiring significant traction means.
  • the assembly is then found substantially in the configuration 1f of the Figure 7B , the flexible connecting pipe 2 is always connected at both ends. This avoids interrupting the production, all remaining safe in a configuration similar to the prior art, although temporarily without the damping and softening device 4, waiting for the repair of the latter and restarting the device according to the invention.
  • FIG. 4 there is shown a bottom surface connection installation of a submarine pipe resting at the bottom of the sea comprising a flexible link comprising a first cable 3 cooperating with a resilient damping device 4 to ensure the connection between the upper end of the riser and a point of attachment 7 on said floating support situated above the level of the sea surface, said elastic damping device 4 taking up the tension of said rigid pipe at its upper end, and adapted to allow the variation of the distance between the upper end of the rigid pipe and the floating support, so as to control, while maintaining said flexible link stretched.
  • the elastic damping device makes it possible to limit radically the movements in the zone of the riser foot, as well as the formation in time of the groove 13a, and consequently to reduce the cumulative fatigue in this zone, of a factor 4 to 6 or more in some preferred embodiments.
  • the elastic damping device 4 is secured to the upper end of the rigid pipe to which it is directly fixed rigidly, said first cable 3 ensuring the connection between a point of attachment 7 of the floating support and the other end of the elastic damping device 4, 20.
  • the upper end of said rigid pipe is located in a subsurface at a depth of 20 to 60m.
  • Said flexible pipe has a length of 20 to 140m.
  • the damping device 4 comprises a pre-compressed spring 20 consisting of a stack of elastic frustoconical washers 20a, known as belleville washers (or " conical spring washer ").
  • belleville washers or " conical spring washer ".
  • the operation of the device 20 is explained with reference to Figures 5A-5C .
  • the belleville washers 20b are arranged alternately axially reversed, thereby forming a succession of pairs 20a of frustoconical washers 20b threaded by their axial perforation around a said first rod 22.
  • each frustoconical washer 20b of the same pair 20a being turned toward each other and the two large opposite bases of the washers of the pair being turned towards the large base of a next or previous washer threaded thereafter on said first rod 22.
  • the washers threaded on the rod 22 are inserted into a cylindrical tube 21 provided with a bottom 21a pierced so as to let the rod 22 provided at its lower end with an attachment point 22a. Said washers are threaded around said rod in sufficient number to be put into compression in a state of pre-stress as illustrated on the drawing.
  • Figure 5B is
  • a washer or end stop 22b is then secured to said rod, so that if one pulls down on the fastener 22a, the compression of the spring and therefore the return force F is increased. creating an elongation ⁇ H which thus gives flexibility to the upper end of the riser.
  • the variations of the voltage in the device 20 are represented as a function of the length of the rod 22 output ⁇ H.
  • the peculiarity of the belleville washers is that the curve 23 force / displacement is substantially linear until a certain value of flattening or crushing of the washers, then the curve 23 flattens in a second time between 23b and 23c. In this zone 23b-23c, a slight increase in compression creates a large displacement.
  • the number of washers 20a is adjusted so as to reach point 23b of the diagram of the figure 5D with a rod 22 almost completely retracted into the chamber 21.
  • the preload is 90t taking up the tension at the riser head when the floating support 10 is at rest at 10a, that is to say that if pulling down on the end 22a of the rod 22, no movement occurs. If the voltage increases at the riser head, the rod 22 moves downwards thus giving flexibility to the device 20, until reaching 23c the maximum voltage value F corresponding substantially to a maximum rod output 22.
  • the preload of the device 20 at 23b is adjusted to a minimum value less than the minimum of the quasi-static voltage cumulated with the dynamic variation, as represented on FIG. figure 2 , and advantageously limits the upper voltage of the device 20 at 23c to a maximum value greater than the maximum of the quasi-static voltage cumulated with the dynamic variation, as represented on the figure 2 .
  • the device 20 according to the invention will always have its rod length 22 output located between the two points 23b-23c of the 5D diagram, and thereby give the desired flexibility between the barge structure and the upper end of the riser.
  • the belleville washers are advantageously arranged by a first group of two or three or more, oriented in the same direction, the second group comprising the same number of identical washers oriented in reverse.
  • the first bar 5a is telescopic, and comprises two elements 5a1, 5a2, a first said element 5a1 being integral with the articulation 5d, a second element 5a2 sliding inside 5a1 and coming into abutment in case of complete extension its second end being hinged at 5c on the second bar 5b, the resilient damping device 4 being connected at the same joint 5c.
  • the elastic damping device induces no compression force within the telescopic bar 5a1-5a2, and the damping elastic device is substantially in a straight line with respect to the end of the riser 1 and at the second bar 5b.
  • the device according to the invention makes it possible, by adjusting for example the length of the flexible link 3, to modify the sensitive zone in the foot of riser subjected to fatigue.
  • the length of said flexible link will for example be 25 to 100 m, then after five years, it will be increased to 50 to 300 m, the sensitive area at the foot of the chain then being substantially displaced. all the more, a critical cumulative fatigue zone then permanently resting on the ground, and therefore not being subjected to fatigue.
  • the operation will advantageously be repeated at regular intervals, insofar as the length of the flexible connection has been provided long enough to absorb these variations in the position of the upper end of the riser in a chain configuration. If necessary, the flexible link will simply be changed and a new longer flexible link will replace the length that has become too short.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Vibration Prevention Devices (AREA)
  • Supports For Pipes And Cables (AREA)
  • Pipe Accessories (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Claims (21)

  1. Einrichtung zur Grund-Oberflächen-Verbindung einer auf dem Meeresgrund aufliegenden Unterwasserleitung, umfassend eine starre Leitung (1), die vom Meeresgrund, auf dem sie aufliegt, bis nahe der Oberfläche verläuft, wo ihr oberes Ende (11) mit einem schwimmenden Träger (10) verbunden ist, dadurch gekennzeichnet, daß das obere Ende (11) der starren Leitung mit dem schwimmenden Träger verbunden ist durch:
    1) wenigstens eine mechanische Verbindung zwischen dem oberen Ende des Risers (11) und einer Eingreifstelle (7) an dem schwimmenden Träger, umfassend wenigstens ein flexibles Verbindungsteil vom Typ Seil oder Kette, wobei die Einrichtung ferner eine Sicherheits- und Führungsvorrichtung (5) umfaßt, die wenigstens eine erste starre Stange (5a) aufweist, welche an einem Ende über ein erstes Gelenk (5d) im Bereich ihrer Eingreifstelle an dem schwimmenden Träger und am anderen Ende über ein zweites Gelenk (5c) im Bereich der mechanischen Verbindung oder des oberen Endes der starren Leitung angelenkt ist, und
    2) eine flexible Leitung (2), die geeignet ist, die Überführung des durch die starre Leitung (1) beförderten Fluids zu dem schwimmenden Träger zu ermöglichen, wobei die flexible Leitung durch wenigstens einen Haltepunkt (2a) im Bereich der mechanischen Verbindung und/oder der Sicherheitsvorrichtung (5) gehalten wird, so daß die flexible Leitung in einer gekrümmten Form vollständig oberhalb des oberen Endes der starren Leitung gehalten wird, wobei die Länge der flexiblen Leitung größer ist als der maximal mögliche Abstand zwischen dem oberen Ende (11) der starren Leitung und der Eingreifstelle der flexiblen Leitung im Bereich des schwimmenden Trägers.
  2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Sicherheits- und Führungsvorrichtung (5) eine mechanische Verbindung variabler Länge zwischen dem schwimmenden Träger (10) und dem oberen Ende der starren Leitung sicherstellt, die ermöglicht, den Abstand zwischen der Eingreifstelle des ersten Gelenks (5d) an dem schwimmenden Träger und dem oberen Ende der starren Leitung zu verändern.
  3. Einrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Sicherheits- und Führungsvorrichtung (5) wenigstens eine erste Teleskopstange (5a) umfaßt, die an ihren Enden (5d, 5c) angelenkt ist, wobei die Änderung des Schiebens der ersten Stange ermöglicht, den Abstand zwischen dem Eingreifpunkt des ersten Gelenks (5d) an dem schwimmenden Träger und dem oberen Ende der starren Leitung zu verändern, wobei dieser Abstand kleiner als die Länge der flexiblen Leitung (2) bleibt.
  4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Sicherheitsvorrichtung eine erste Stange (5a) umfaßt, die über ein erstes Gelenk (5d) an einem Ende im Bereich ihrer Eingreifstelle an dem schwimmenden Träger und über ein zweites Gelenk (5c) an dem anderen Ende im Bereich des flexiblen Verbindungsteils angelenkt ist, wobei die Enden des flexiblen Verbindungsteils am oberen Ende des Risers (11) bzw. an einer Eingreifstelle (7) an dem schwimmenden Träger befestigt sind.
  5. Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Krümmung der flexiblen Leitung eine umgekehrte Zweifachkrümmung mit einem vorzugsweise im Bereich eines Haltepunktes (2a) gelegenen Wendepunkt aufweist.
  6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die flexible Leitung durch wenigstens zwei Haltepunkte (2a, 2b) im Bereich der ersten Stange (5a) bzw. im Bereich des flexiblen Verbindungsteils (3) zwischen dem oberen Ende der starren Leitung und dem zweiten Gelenk (5c) gehalten ist.
  7. Einrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die Sicherheits- und Führungsvorrichtung (5) wenigstens zwei, eine erste und eine zweite, Sicherheitsstangen (5a, 5b) umfaßt, die durch ein zweites Gelenk (5c) untereinander angelenkt sind und an ihren Enden über ein erstes Gelenk (5d) am Ende der ersten Stange im Bereich des schwimmenden Trägers und ein drittes Gelenk (5e) am Ende der zweiten Stange im Bereich des oberen Endes der starren Leitung angelenkt sind, wobei die erste Stange vorzugsweise teleskopartig ist, wobei die Änderung der Neigung der beiden Stangen zueinander und vorzugsweise der Ausschub der ersten Stange ermöglicht, den Abstand zwischen einerseits der Eingreifstelle des ersten Gelenks (5d) der ersten Stange an dem schwimmenden Träger und andererseits der Eingreifstelle des dritten Gelenks (5e) der zweiten Stange am oberen Ende der starren Leitung zu verändern.
  8. Einrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das flexible Verbindungsteil an einem Ende im Bereich des mittleren Gelenks oder zweiten Gelenks (5c) zwischen den beiden Stangen (5a, 5b) und am anderen Ende an einer Eingreifstelle (7) an dem schwimmenden Träger befestigt ist.
  9. Einrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die flexible Leitung durch wenigstens zwei Haltepunkte (2a, 2b) im Bereich jeweils der beiden Stangen gehalten ist.
  10. Einrichtung nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß das erste Gelenk im Bereich der Befestigung der ersten Stange an dem schwimmenden Träger einzig und allein eine Drehung der ersten Stange um eine zur Beplankung des schwimmenden Trägers parallele Achse erlaubt, wobei die Achse (YY) horizontal ist, wenn der schwimmende Träger sich in Ruhestellung befindet, so daß die Achse (XX) des oberen Teils der starren Leitung im wesentlichen in einer Ebene gehalten wird, die zu der Beplankung des schwimmenden Trägers im wesentlichen senkrecht verläuft.
  11. Einrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Sicherheits- und Führungsvorrichtung zwei erste Stangen umfaßt, die auf beiden Seiten der axialen Ebene einer einzigen zweiten Stange parallel angeordnet sind, und die zweiten Gelenke (5c) mit einer Tragplatte (5f) fest verbunden sind, die ihrerseits mit dem Ende der zweiten Stange fest verbunden ist.
  12. Einrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das flexible Verbindungsteil von einem ersten Seil gebildet ist, das seinerseits vorzugsweise aus thermoplastischen Fasern mit Elastizitätseigenschaften besteht, oder wenigstens eine elastische Dämpfungsvorrichtung (4) umfaßt oder damit zusammenwirkt, wobei die elastische Dämpfungsvorrichtung (4) die Spannung der starren Leitung an ihrem oberen Ende aufnimmt und die Änderung des Abstandes zwischen dem oberen Ende der starren Leitung und dem schwimmenden Träger ermöglicht und dabei das erste Seil oder die Kette (3) gespannt hält.
  13. Einrichtung nach Anspruch 1 oder 12, dadurch gekennzeichnet, daß die starre Leitung eine Leitung vom Typ aufgehängte Leitung ist, die in einer Kettenkurve, welche eine im wesentlichen kontinuierlich variable Krümmung bis zu ihrem oberen Ende aufweist, vom Meeresgrund bis nahe der Oberfläche verläuft.
  14. Einrichtung nach einem der Ansprüche 12 oder 13, dadurch gekennzeichnet, daß die elastische Dämpfungsvorrichtung (4) eine mechanische elastische Vorrichtung von der Art mit Feder oder mit Tellerfedern, oder eine hydropneumatische elastische Vorrichtung vom Typ mit Zylindern umfaßt.
  15. Einrichtung nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die elastische Dämpfungsvorrichtung an dem schwimmenden Träger befestigt ist und das flexible Verbindungsteil die Verbindung zwischen der Dämpfungsvorrichtung und einem starren Element der mechanischen Verbindung zwischen dem oberen Ende der Leitung und dem schwimmenden Träger sicherstellt, wobei vorzugsweise das starre Element ein zweites Gelenk einer Sicherheitsstange (5a), weiterhin vorzugsweise ein erstes Gelenk (5c) zwischen den beiden Sicherheitsstangen (5a, 5b) einer Sicherheitsvorrichtung (5) ist.
  16. Einrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die elastische Dämpfungsvorrichtung in der Flucht des oberen Endes der starren Leitung angeordnet ist.
  17. Einrichtung nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, daß das erste Seil und gegebenenfalls die Dämpfungsvorrichtung geeignet sind, Spannungen am oberen Ende der starren Leitung zwischen 50 und 750 T, vorzugsweise zwischen 100 T und 250 T aufzunehmen.
  18. Einrichtung nach einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, daß das erste Seil und gegebenenfalls die Dämpfungsvorrichtung Bewegungen des oberen Endes der starren Leitung zulassen, die geeignet sind, Spannungsänderungen am oberen Ende der starren Leitung abzuschwächen, wobei die Änderungen bis zu 20 % der Spannung in Ruhe im Bereich des oberen Endes der starren Leitung ausmachen.
  19. Einrichtung nach einem der Ansprüche 12 bis 18, dadurch gekennzeichnet, daß das erste Seil und gegebenenfalls die elastische Dämpfungsvorrichtung geeignet sind, Änderungen des Abstandes zwischen dem oberen Ende der starren Leitung und dem schwimmenden Träger oder Bewegungen in axialer Richtung (XX) des oberen Endes der starren Leitung um 1 bis 10 m, vorzugsweise um 2 bis 5 m zu ermöglichen, vorzugsweise bei Spannungsänderungen am oberen Ende der starren Leitung zwischen 5 und 150 T.
  20. Einrichtung nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, daß das obere Ende der starren Leitung oberflächennah in einer Tiefe von 20 bis 60 m liegt.
  21. Einrichtung nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß die flexible Leitung eine Länge zwischen 20 und 400 m aufweist und das flexible Verbindungsteil eine Länge zwischen 10 und 300 m hat und gegebenenfalls die Sicherheits- und Führungsvorrichtung sich über eine Länge von 1,5 bis 25 m erstrecken kann.
EP08805852A 2007-05-29 2008-05-26 Boden-oberflächen-verknüpfungsausrüstung mit einem flexiblen link zwischen einem schwimmenden träger und dem oberen ende eines unterwasserrohrs Not-in-force EP2148974B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0703801A FR2916795B1 (fr) 2007-05-29 2007-05-29 Installation de liaison fond-surface comprenant un disposisif elastique d'amortissement reprenant la tension de l'extremite superieure d'une conduite rigide en subsurface
FR0755926A FR2916796B1 (fr) 2007-05-29 2007-06-21 Installation de liaison fond-surface comprenant un lien souple entre un support flottant et l'extremite superieure d'une conduite rigide en subsurface.
PCT/FR2008/050908 WO2008152289A2 (fr) 2007-05-29 2008-05-26 Installation de liaison fond-surface comprenant un lien souple entre un support flottant et l'extremite superieure d'une conduite rigide en subsurface

Publications (2)

Publication Number Publication Date
EP2148974A2 EP2148974A2 (de) 2010-02-03
EP2148974B1 true EP2148974B1 (de) 2011-11-23

Family

ID=38924515

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08805851.6A Not-in-force EP2153018B1 (de) 2007-05-29 2008-05-26 Unterteil-oberflächen-verbindungsinstallation mit einer elastischen dämpfungsvorrichtung zur aufnahme der spannung des oberen endes einer unter der oberfläche befindlichen festen leitung
EP08805852A Not-in-force EP2148974B1 (de) 2007-05-29 2008-05-26 Boden-oberflächen-verknüpfungsausrüstung mit einem flexiblen link zwischen einem schwimmenden träger und dem oberen ende eines unterwasserrohrs

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08805851.6A Not-in-force EP2153018B1 (de) 2007-05-29 2008-05-26 Unterteil-oberflächen-verbindungsinstallation mit einer elastischen dämpfungsvorrichtung zur aufnahme der spannung des oberen endes einer unter der oberfläche befindlichen festen leitung

Country Status (4)

Country Link
EP (2) EP2153018B1 (de)
AT (1) ATE534803T1 (de)
FR (2) FR2916795B1 (de)
WO (2) WO2008152289A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2957649B1 (fr) * 2010-03-18 2012-05-11 Saipem Sa Procede de depose d'une ligne sous-marine au fond de la mer
AU2013279827B2 (en) * 2012-06-21 2017-07-13 National Oilwell Varco Denmark I/S An offshore top site system
US10184589B2 (en) 2015-03-04 2019-01-22 Ge Oil & Gas Uk Limited Riser assembly and method
BR102016024269B1 (pt) * 2016-10-18 2023-05-16 Petróleo Brasileiro S.A. - Petrobras Sistema de auto-alinhamento e enrijecimento de dutos flexíveis em uma unidade estacionária de produção, e, método de instalação de dutos flexíveis através do mesmo
WO2018163126A2 (en) * 2017-03-09 2018-09-13 Single Buoy Moorings, Inc. Steel catenary riser top interface
CN109764188B (zh) * 2019-02-19 2024-05-07 长沙学院 柔性连接调节器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023517A (en) * 1975-08-11 1977-05-17 Ryan William J Riser mooring system
US4065822A (en) * 1976-02-27 1978-01-03 Texaco Inc. Single point mooring with strain relief anchoring
GB0002703D0 (en) * 2000-02-08 2000-03-29 Victoria Oilfield Dev Limited Mooring and flowline system
CA2406528A1 (en) * 2000-04-27 2001-11-01 Larry Russell Jordan System and method for riser recoil control
FR2808263B1 (fr) * 2000-04-28 2002-07-05 Coflexip Dispositif de transfert d'un fluide entre au moins deux supports flottants
US6916218B2 (en) * 2001-01-24 2005-07-12 Single Buoy Moorings Inc. Wave motion absorbing offloading system
AU2002355766B2 (en) * 2001-08-03 2007-08-09 National Oilwell Varco Denmark I/S A bending-restricting anchoring arrangement and an anchored flexible pipe structure
ATE335651T1 (de) * 2002-06-17 2006-09-15 Douglas Marine Srl Haltevorrichtung mit dämpfer
US6824330B2 (en) * 2002-09-19 2004-11-30 Coflexip S.A. Constant tension steel catenary riser system
BRPI0400422A (pt) * 2004-03-02 2005-10-18 Petroleo Brasileiro Sa Arranjo de elemento compensador suspensor

Also Published As

Publication number Publication date
EP2153018B1 (de) 2013-07-10
WO2008152289A2 (fr) 2008-12-18
WO2008152288A4 (fr) 2009-07-23
FR2916796B1 (fr) 2010-08-27
EP2148974A2 (de) 2010-02-03
FR2916795B1 (fr) 2010-08-27
FR2916795A1 (fr) 2008-12-05
EP2153018A2 (de) 2010-02-17
WO2008152288A3 (fr) 2009-05-14
ATE534803T1 (de) 2011-12-15
WO2008152289A3 (fr) 2009-05-14
FR2916796A1 (fr) 2008-12-05
WO2008152288A2 (fr) 2008-12-18

Similar Documents

Publication Publication Date Title
EP1073823B1 (de) Verfahren und vorrichtung zur bildung einer verbindung zwischen meeresgrund und oberfläche mittels einer in grosser tiefe installierten unterwasserleitung
EP1899219B1 (de) Vorrichtung zur übergabe von fluiden zwischen zwei schwemmenden plattformen
EP2122114B1 (de) Rohrinstallation mit flexiblem steiger zur förderung von kohlenwasserstoffen
EP2148974B1 (de) Boden-oberflächen-verknüpfungsausrüstung mit einem flexiblen link zwischen einem schwimmenden träger und dem oberen ende eines unterwasserrohrs
EP2286056B1 (de) Boden-oberfläche-verbindung aus einem starren steigrohr mit flexiblem kanal mit positiver flotation
EP1913229B1 (de) Unterwassersystem mit einem biegsamen rohr mit verstellbarer krümmung
EP0424225B1 (de) Steigleitung für grosse Wassertiefen
EP2329175B1 (de) Biegsame steigrohrinstallation für den transport von kohlenwasserstoffen in grossen tiefen
EP1228330B1 (de) Greifersystem zum spannen einer rohrleitung, und seine schwimmfähige haltevorrichtung
EP2844820A1 (de) Installation mit meeresboden-zu-oberfläche-verbindungen vom typ eines multi-riser-hybridturms mit flexiblen rohren mit positivem auftrieb
EP2785952B1 (de) Vorrichtung für flexible und mannigfaltige verbindungen zwischen meeresgrund und oberfläche auf mindestens zwei ebenen
FR2858648A1 (fr) Dispositif de liaison fond-surface comportant une articulation flexible etanche entre un riser et un flotteur
EP2571753B1 (de) Vorrichtung für eine verbindung zwischen meeresgrund und oberfläche mit einer flexiblen rohrführungsstruktur
EP2997220B1 (de) Vorrichtung zur verankerung einer laufbahnhalterung in einer vom meeresgrund bis zur oberfläche reichenden anlage
FR2951802A1 (fr) Conduite sous-marine appliquee a l'exploitation de l'energie thermique des mers
EP1509671B1 (de) Mehrfachkettenfahrleitung-steigrohr
EP2640923A1 (de) Turm zur nutzung der flüssigkeit einer wasserfläche und zugehöriges installationsverfahren
FR2857690A1 (fr) Systeme de forage en mer comprenant une colonne montante haute pression
OA17784A (fr) Dispositif d'ancrage d'un support de goulottes d'une installation fond-surface
OA17101A (en) Installation de liaisons fond-surface de type tour hybride multi-risers comprenant des conduites flexibles à flottabilité positive.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091116

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

17Q First examination report despatched

Effective date: 20110708

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

DAX Request for extension of the european patent (deleted)
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008011590

Country of ref document: DE

Effective date: 20120202

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20111123

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120323

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120224

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120323

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120223

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 534803

Country of ref document: AT

Kind code of ref document: T

Effective date: 20111123

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120824

BERE Be: lapsed

Owner name: SAIPEM SA

Effective date: 20120531

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008011590

Country of ref document: DE

Effective date: 20120824

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602008011590

Country of ref document: DE

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120305

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080526

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20220520

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230531