WO2000066923A1 - Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications - Google Patents
Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications Download PDFInfo
- Publication number
- WO2000066923A1 WO2000066923A1 PCT/FR2000/001155 FR0001155W WO0066923A1 WO 2000066923 A1 WO2000066923 A1 WO 2000066923A1 FR 0001155 W FR0001155 W FR 0001155W WO 0066923 A1 WO0066923 A1 WO 0066923A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- support
- axis
- ship
- laying
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/16—Laying or reclaiming pipes on or under water on the bottom
- F16L1/18—Laying or reclaiming pipes on or under water on the bottom the pipes being S- or J-shaped and under tension during laying
- F16L1/19—Laying or reclaiming pipes on or under water on the bottom the pipes being S- or J-shaped and under tension during laying the pipes being J-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
- B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/202—Accessories therefor, e.g. floats, weights fixed on or to vessels
- F16L1/203—Accessories therefor, e.g. floats, weights fixed on or to vessels the pipes being wound spirally prior to laying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/03—Pipe-laying vessels
Definitions
- the present invention relates to the connection and installation of successive parts of an underwater pipe from a ship carrying out installation operations, in particular by very great depths of water. It applies to any pipe intended to convey a fluid, an electric current, optical signals or information and in particular to rigid or flexible tubular pipes, umbilicals and electric cables, whose behavior in the height of the section of water is quite similar regardless of the transverse rigidity of the pipe, since the height of said water section exceeds 500 to 600 meters; the curvature taken by the pipe under such conditions, whatever its nature, being substantially equivalent to the mathematical curve called chain, because the effects of the rigidity of the pipe on the resulting curvature are second order compared to the effects of the gravity, under these operating conditions.
- ship designates any movable floating assembly capable of allowing the laying of a pipe.
- Connecting the pipe parts requires keeping the pipe part already submerged, presenting the new pipe part at the end of this part, operating assembly tools and guiding the pipe for laying at sea.
- Laying devices which comprise, on a ship, (A) a support with variable inclination equipped with means for supporting the weight of the pipe part already submerged and maintaining on request in an assembly plane the emerged end of this pipe part, means for receiving a new pipe part along the longitudinal axis of laying and bringing it into said assembly plane, 'and of guide means,
- (B) means constituting a horizontal pivot axis of the support on the ship so that the support is tiltable according to the inclination which is suitable for laying the pipe at sea, (C) means for controlling the pivoting of the support and to keep it in the required inclined position, (D) means for depositing the new pipe part on the support, and
- (E) a work station equipped with means for assembling the two pipe parts and ancillary works.
- the work station is carried by the support and means are required for this station to maintain the correct attitude, in general a substantially horizontal position at the assembly station. , regardless of the inclination of the support. Indeed, the inclination of the support for laying can vary according to the applications because it depends on different factors including in particular the nature of the pipe to be laid and the laying depth.
- a device which comprises a pipe support and a work station which is not carried by the support but by the ship, the support being fixed and the means for supporting the weight of the pipe part. already submerged before realization of the assembly being carried by the work station (EP 0 478 742).
- One of the aims of the invention is to allow the use of a work station carried by the ship and not by the support, in the case of a support with variable inclination, which provides numerous advantages ( simplification, efficiency, etc.).
- the situation of the work station for the work is substantially independent of the inclination of the support and the work station can be carried by the ship to a determined location.
- a possibility of movement may finally be desirable to retract the station, so as not to hinder the tilting of the support when the support must be folded down on the bridge to take account of the state of the
- Assembly by welding is preferred, but the invention is not limited to this mode of assembly. It is notably planned, as a variant, to carry out the assembly by screwing, by interlocking or by an assembly connector.
- Embodiments in accordance with the present invention also exhibit one or more of the following characteristics:
- a beam and means for adjusting and maintaining the beam in position when it is in the inclined position the beam being further equipped with means having a curvature to guide towards the support, a continuous pipe coming from a drum, when the beam is in this position,
- the means having a curvature comprises a chute
- the means having a curvature comprises a pulley
- the beam has a U-shaped upper end
- the means for holding the beam in position comprise means for locking the beam to the support which comprise a structural connection, associated with a lock, the support is a tower made of metal beams shaped to allow movement of the work station through or within the support, - the workstation can be moved on rails integral with the ship, the workstation can be moved parallel to the longitudinal axis of the ship, the workstation has a floor for the movement of personnel and a ceiling and / or a ceiling structure which carries means required for supplying welding heads mounted to move substantially in the assembly plane, the work station comprises a ceiling and a floor which have notches for passage from the end of the submerged pipe part and the new pipe part, the work station comprises a rotating carousel provided with means for feeding welding heads, the rotating carousel is carried by a ceiling of the station work or by a ceiling structure, the carousel is movable in translation in the station between a service position and a retracting position, the work station comprises a carousel equipped with means for carrying out said assembly and a
- the invention applies inter alia to the laying of a pipe made up of straight sections or "oars" (string) assembled and laid step by step, each section itself being able to be made up of several elementary pipe lengths assembled to form a train. These elementary lengths are generally 12 meters.
- a beam capable of supporting the new train and to pivot around a substantially horizontal axis of pivoting of the beam, preferably the axis of pivoting of the beam coinciding with the pivot axis of the support, means being provided for controlling the tilting of the beam between a substantially horizontal starting position which makes it possible to place or constitute the train on the beam from a stock and an inclined position where the train can be transferred to the support, which will have been previously brought into its inclined service position.
- This beam is for example articulated on the pivot axis of the support or is forced to move in an arc centered on this axis.
- the invention also applies to the laying of a pipe consisting of rigid or non-rigid sections wound on a distributor and unwound on demand on the support, with possible straightening of the section to a rectilinear configuration at the head of the support.
- Another aspect of the invention relates to the use of tensioners capable of clamping a pipe, upstream of the pivot axis, on a pipe support pivotally mounted on a ship in order to be able to take any inclination required for laying the driving.
- Tensioners capable of tightening a pipe and applying a retaining force directed upwards along the axis of the pipe are commonly used by skilled in the art and are available on the market.
- the tensioners are mounted displaceable on the support between two positions corresponding to a main laying axis and to a secondary laying axis offset but parallel to the main axis. It is thus possible to use the tensioners to hold and guide a part of a pipe or a pipe along one or the other of the laying axes.
- the invention relates to a device for connecting and laying successive parts of an underwater pipe from a ship, which comprises on the ship, a pipe support with variable inclination equipped with means for supporting the weight of the pipe part already submerged and maintain on request in an assembly plane the emerged end of this pipe part, means for receiving a new pipe part along the longitudinal axis of laying of the pipe and l '' bring in said assembly plane and guide means, means constituting a horizontal axis of pivoting of the support on the ship so that the support is tiltable in the position suitable for the installation at sea of the new pipe part , means for controlling the pivoting of the support and for keeping it in the required inclination, means for depositing on the support the new pipe part, - a work station equipped with means for carrying out the assembly, and
- the displacement means are provided with clamping means retaining the new pipe portion, during the lifting operation of the beam.
- the invention relates to a device for laying an underwater pipe, unwound from a drum from a ship, which comprises on the ship, a variable inclination pipe support equipped with means for supporting the weight of the already submerged pipe part,
- a beam capable of supporting a pipe, this beam being mounted on the ship so as to be able pivot around a substantially horizontal axis of pivoting of the beam preferably coinciding with the pivot axis of the support and comprising means for supplying and guiding a continuous pipe, these supply means having a curvature such that the pipe can be guided over the pipe support without being damaged.
- these supply means comprise a chute or a pulley.
- the installation, with the on-board crane, of the means of supply on the beam rather than on the support is facilitated.
- the installation, on the supply means, of the on-board crane, and at the start of the laying, of heavy parts, such as a heavy connector associated with a new portion of pipe, when the beam is on the deck of the ship, is facilitated.
- the upper end of the beam, now holding the chute or the pulley is U-shaped, so that the chute or the pulley is centered. This eliminates the torsional effects on the beam.
- the beam is locked on the support, by a structural connection associated with a lock. This allows the tension of the cable intended to move the beam to be released during the pipe laying operations.
- FIG. 1 is a diagram in side view of the installation in J of a pipe by great depth
- FIG. 2 is a side view of the approach phase, at the end of laying in J of a pipe, of the ship near a floating body
- FIG. 3 is a side view of the ship fitted with the laying tower and its main accessories for laying rigid pipes
- FIG. 4 is a view similar to FIG. 3 showing the pipe in suspension
- FIG. 5 is a side view of the ship fitted with the laying tower and its main accessories for laying rigid pipes
- FIG. 6 is a top view relative to FIG. 5 detailing the beam supporting a pulley or a flexible pipe supply chute
- Figures 7, 8 and 9 are side views of the ship equipped with the tower, detailing a chute for supplying a flexible pipe, respectively in the storage position on the deck of the ship, then installed on the beam and finally receiving said flexible pipe fitted with an end connector,
- FIG. 10 is a side view equivalent to FIGS. 7, 8 and 9, detailing an operation for laying a flexible pipe through the tower, the beam being in the raised position,
- FIGS. 11 and 12 are side views of the ship equipped with the tower, detailing a supply pulley of a flexible pipe respectively installed on the beam and in the laying operation, the beam being in the raised position,
- Figure 13 is a side view of the ship equipped with the tower, detailing a abandonment winch and a trolley for handling underwater pipe accessories,
- FIG. 14 is a side view of the ship equipped with the tower and a chute for supplying a continuous flexible pipe, to tensioners located on the secondary laying axis,
- FIG. 15 is a side view of the ship equipped with the tower and a pulley for feeding a continuous electric cable, to tensioners located on the main laying axis,
- FIG. 16 is a side view of the ship fitted with the tower, of a pulley for supplying a continuous rigid pipe laid in the unwinding and passing through a straightening system before entering the tensioners,
- Figure 17 is a section of the tower through a transverse plane in top view associated with a partial top view of a two-part tensioner which can deviate laterally
- Figure 18 is a view similar to Figure 17 in which the tensioner is U-shaped
- FIG. 19 is a side view in section of a welding booth associated with a side view of the internal equipment, • FIG. 20 is the top view relating to FIG. 19,
- FIG. 21 is a plan view from below, of a horseshoe carousel located on the ceiling of a welding booth
- Figure 22 is a view similar to Figure 21 in which the carousel has turned by an angle ⁇
- FIG. 23 is a side view of a welding booth during assembly
- FIG. 24 is a side view of the lifting block showing the articulation of the arms by means of a hydraulic cylinder
- FIG. 25 is the side view relating to FIG. 24 detailing the two arms as well as the gripper with clamping corners,
- FIG. 26 is a section in top view of the gripper describing the front door and its opening
- FIG. 27 is a sectional view of a fixed work station grouping together in a single cabin the means of inspection and coating welding, • FIG. 28 is the top view relating to FIG. 27,
- Figure 29 is a sketch in side view showing an embodiment of a virtual axis of rotation so that the beam straightens by describing an arc centered on said virtual axis.
- Figure 1 is a diagram in side view of the installation in J of a pipe 1 from a laying vessel 2 equipped with a tower 3 inclined relative to the horizontal, so that the axis of said tower is tangent to the chain curve formed by the suspension pipe from said vessel to the bottom of the sea 4 on which it rests.
- the chain is the mathematical curve that a line of low stiffness takes when it is subjected to Earth's attraction.
- the behavior of a cable, hose or thick steel pipe will have a similar behavior, because the rigidity of the line no longer comes into play when the length is important: indeed, for large spans, the stiffness of a pipe remains low regardless of the rigidity of the cross section of the line.
- Figure 2 is a side view detailing the approach phase of the ship 2 near a floating barge 5, held in position by an anchor not shown.
- Ship 2 rotated 180 degrees around a vertical axis tangent to her stern.
- the suspended pipe was fitted with an abandonment head 6, shown in more detail in FIG. 4, and connected to an abandonment winch 8 not shown in FIG. 1, but shown in FIG. 4, via a cable 7.
- the ship can rotate 180 degrees around its stern and modify the angle of inclination of the tower without risking damaging the pipe, insofar as the movements of the ship are perfectly controlled.
- a vessel with dynamic positioning is advantageously used.
- Figure 3 is a side view of the rear of the ship 2 equipped with the tower 10 consisting of a main structure of metal beams and a secondary reinforcement structure not shown.
- This tower is articulated, near its base, around a substantially horizontal pivot axis 11, parallel and transverse to the deck of the ship. Said axis cuts the longitudinal axis 12 of laying the pipes 1.
- a second longitudinal laying axis 13, is offset from the axis 12, is provided for laying flexible lines of great continuous length, such as flexible conduits, electric cables or umbilicals, or even semi lines -rigid such as unrolled tubular conduits.
- the device comprises a beam 30 substantially parallel to the deck of the ship 2 and having at its left end an axis of articulation coinciding with the axis of articulation of the tower on the ship. Near its other end, is the point of attachment 32 of a cable 31 turned around a deflection pulley 33 located towards the top of the tower 10, and connected to a winch 34 secured to the platform 20
- the beam can thus be maneuvered and brought back towards the tower to transfer a train 35 resting on a series of supports 36 provided on the beam and held in position by a device not shown, such as clamps.
- This train 35 is formed from elementary unit lengths assembled together by welding in position 37.
- the train being prepared 37 is supported by devices 38 making it possible to carry out a correct alignment of the various elements and to maintain them during all the operations. assembly.
- the tower is equipped with means which make it possible to adjust its inclination according to the type of pipe to be laid. This adjustment is carried out using a geared motor 26 articulated at 25 on the main structure of the tower 10, the output shaft of said geared motor being equipped with a gear acting on the rack 24 of a arm 22 articulated at 23 on a support integral with the deck of the ship.
- the gear motor By acting on the gear motor, the angle between the axis of the tower and the axis of the ship is modified and the angle of laying of the pipe can be adjusted.
- the lower part 40 of the tower 10 is articulated along an axis 41 parallel to the axis 11 is located below this axis, which makes it possible to raise this end to prevent it from interfering with the sea, during journeys made at maximum speed and at full load.
- This lower part 40 is shown here in the working position and in the raised position in FIG. 15.
- the lower part 40 is equipped with a device 43 making it possible to keep the pipe 1 not shown in suspension, as well as a device for guiding rollers 42, adjustable as a function of the diameter of the pipe and erasable for the line abandonment phases or else to allow the passage of heavy and bulky equipment integral with the pipe, as described in FIG. 13.
- This erasure can be carried out either by means of horizontal articulation, or of articulation parallel to the laying axis, or else of means allowing translations.
- the erasure of the lower part 40 of the tower 100 can be carried out by means of articulation of any axis or else of means allowing translations.
- Three tensioners 60 shown in the working position on the secondary axis 13 can be moved on the tower, by means not shown, to reach the position 61 corresponding to a working position on the main axis 12.
- a supporting structure " 50 integral with the ship 2 supports a welding cabin 51a and a coating cabin 51b, movable parallel to the longitudinal axis of the ship and moving on guide rails not shown.
- Figure 4 is a side view, similar to Figure 3 further showing the submerged pipe whose end is kept in tension within the device 43, guided at the level of the rollers and whose upper part, corresponding to the area d 'assembly located in the plane 44, is inside the coating cabin 51b.
- the upper end of the train 35 is gripped by the gripper 16 and l the assembly is lowered until the lower end of the train comes into contact with the suspended pipe, at the plane 44.
- the train 35 is then gripped by a system of clamps not shown, integral with the structure of the tower 10, the retaining device, not shown, of the train on the beam 30 is then released.
- the beam is then lowered to receive a new train for the next cycle.
- Figure 5 is a side view of the ship 2 equipped with the laying tower 10 and its main accessories for laying rigid pipes comprising, on the beam 30, a carriage 320 provided with a guide device, not shown, parallel to the axis of the beam and having a system of clamps 321 used to retain the train when the beam is in an oblique position.
- Said carriage is provided with an actuator, such as a hydraulic cylinder, not shown, connected to the structure of the beam 30, or else a gear motor, not shown, secured to the carriage 320, acting on a rack, not shown. , itself integral with the structure of the beam and making it possible to carry out, in a controlled manner, when the beam 30 is in the raised position, the maneuver of descent of the train to reach the assembly zone located in the plane 44.
- an actuator such as a hydraulic cylinder, not shown, connected to the structure of the beam 30, or else a gear motor, not shown, secured to the carriage 320, acting on a rack, not shown.
- FIG. 6 is a top view of the beam 30 whose right part is U-shaped and has two arms 30a-30b supporting a pulley 340 for supplying flexible pipe, axis 341, via bearings not shown.
- a chute 330 can be installed in place of the pulley to perform the same service.
- the straight end of the beam shown in the shape of a U, can advantageously be closed by means of structural profiles so as to increase the rigidity of the latter.
- Figure 7 is a side view of the ship 2 equipped with the tower 10, showing a chute 330 for supplying a flexible pipe in the storage position 331 on the deck of the ship.
- Figure 8 is a view similar to Figure 7 showing the chute 330 installed on the beam 30.
- the chute 330 is installed on the longitudinal axis of the beam 30, as shown in Figure 6, that is to say , so as not to induce torsional forces on the pipe.
- the supply means 330, 340 have a radius of curvature adapted so that the pipe is not damaged when it is guided towards or on the support 3.
- This radius of curvature is for example between 0.5 and 10 meters , its value depending on the type of pipes laid.
- FIG. 9 is a view similar to FIG. 8, showing a flexible pipe 332 equipped with a heavy automatic connector 333, the assembly being in position on the chute 330, retained by means not shown and ready to be raised towards the tower to initiate the laying of the pipe.
- FIG. 10 is a view similar to FIG. 9 showing the beam raised towards the tower 10 and tangent to the main laying axis 12.
- the flexible pipe at the outlet of the chute 330, passes through the tensioners 60.
- the beam is held in position by a device made up of structural elements 334 secured respectively to the structure 10 of the tower and to the beam 30, the assembly being adjusted and then locked by a device 335. By doing so, it is avoided to retain during the entire laying operation, the beam using the cable 31 connected to the winch 34. It is then possible to release the tension in the cable during the said laying operation.
- FIG. 11 is a side view of the ship 2 equipped with the tower 10, showing a pulley 340 for supplying a flexible pipe installed on the beam 30.
- the pulley 340 is installed on the longitudinal axis of the beam 30 as shown in Figure 6.
- the pulley 340 can be motorized or not.
- the beam 10 is then tilted in the laying position so that the pipe placed on the pulley 340 is guided towards the support 10 while minimizing the mechanical stresses applied to the pipe.
- FIG. 12 is a view similar to FIG. 9 showing, in place of a chute, a pulley 340, motorized or not, for supplying a flexible pipe 342.
- FIG. 13 is a side view of the ship equipped with the tower 10, detailing a procedure for abandoning or releasing the tower with a view to reversing the ship by 180 degrees, followed by a modification of the inclination from tower 10, with a view to carrying out, for example, the approach of a barge by reversing towards it as detailed in FIGS. 1 and 2.
- a winch 8 installed for example in one of the holds vessel 2 is connected by a cable 7 rotated about 70a-70b bringing return pulleys said cable in the main axis 12 of the tower 10. the end of the cable is connected to a drop head 6 secured to the driving 1.
- FIG 13 is shown a carriage 76 moving on rails not shown, integral with the beam 30.
- This carriage receives heavy and bulky equipment that can weigh several tonnes and to be installed on the pipe during laying operations.
- the pipes can be equipped with automatic connectors at the start of laying, in which case, at the very start of operation, the connector 75 will be placed on the carriage 76, for example by crane, then the assembly will be moved to the final position 77.
- the train 37 which has just been prepared will then be transferred to the beam 30 and its front end will be assembled on said connector 75.
- the train provided with its connector will then be raised and then transferred to the tower and installation will begin so.
- FIG 14 is a side view of the ship 2 equipped with the tower and a chute 82 for supplying a flexible pipe 80.
- the chute has a radius of curvature greater than the minimum radius of curvature below which the hose would be damaged and allows to direct said flexible towards the secondary axis 13 of the tower 10. The flexible then passes successively through each of the tensioners before entering the water at an angle corresponding to the angle of the laying chain.
- the device according to the invention thus makes it possible to apply the laying tension in the line only after said line has been brought into alignment with the laying axis 13, itself tangent to the mathematical curve formed by the chain. . It is then observed that during the entire progression of the line, until it enters the tensioners, the latter is subjected to low tensions during the multiple bends and counter-bends generated by the various guides as well as the chute. The maximum tension in the line is only applied once the line is engaged in the tensioners, therefore when the line is substantially in a straight line.
- FIG. 15 is a side view of the ship 2 fitted with the tower 10 and comprising in its upper part a support 87 of a pulley 86, said support being integral with the main structure of the tower 10.
- a continuous electrical cable stores on board the ship on means not shown, passes around the pulley and tangentially leaves it along the main axis 12 of the tower 10 to enter the tensioners 60 whose axis coincides with the main axis 12.
- the lower part 40 of the tower is shown in the folded position, the movement being effected, for example, by means of a jack 45 articulated on one side at 46 on the main structure of the tower 10 and on the other at 47 on the lower part 40.
- FIG. 16 is a side view of the ship 2 equipped with the tower 10, and comprising in its upper part a support 90 of a pulley 86, said support being integral with the main structure of the tower 10.
- a pipe 91 continues, made of very thick steel and having a high rigidity, is stored on board the ship on a drum 92. After unwinding, said pipe generally has a concave curvature during its journey towards the groove of the pulley 86 in order to leave it substantially tangentially, according the main axis 12 of the tower 10. It then enters a rectifier device 93, for example with multiple rollers, which, being known to the skilled person in the field of manufacturing tubes and wires, will not be not described here in detail.
- FIG. 15 is a top view, in cross section of the tower 10 relating to Figure 16. The section was made at the top of the lower tensioner positioned on the main axis 12 of the tower.
- the tensioner consists of two independent parts 105a-105b which can move on guide rails 107a-107b secured to the main structure of the tower 10.
- the two parts of the tensioner 105a-105b are locked in position on the rails, 107a- 107b and the pads 108 maintain, by simple friction, the pipe 91 in suspension.
- Such a tensioner with multiple rows of pads being known to a person skilled in the art, in particular in the field of S-shaped laying of underwater pipes, will not be described here in detail.
- the tensioners are not used, the space is freed by moving the two parts 105a-105b towards the respective garage positions 106.
- the articulation along the axis 11 of the tower 10 and of the beam 35 consists of a bearing lOOa-lOOb secured to the main structure of the tower 10 in which an axis 103a-103b secured to a structure lOla- lOlb, itself secured to the deck of the ship 2.
- axis 103a-103b journals the end bearing of the arms 102a-102b secured to the structures 108a-108b, themselves secured to the beam 35.
- FIG. 18 is a top view, in cross section of the tower 10 • relating to Figure 16 similar to Figure 17, in which the tensioner 110 consists of a U-shaped structure which can move on guide rails 112 , integral with the main structure of the tower 10. During the laying operations the tensioner 110 is locked in position on the rails 112 by means not shown.
- the tensioner when it is not used on the main axis 12 of the tower 10, can be moved to the garage position 111 corresponding for example to the secondary axis 13.
- the tensioner can also be used in this position 111 to lay a pipe along the axis 13, while the main axis 12 is used, for example, to simultaneously lay a rigid pipe made up of trains according to the descriptions in FIGS. 3 and 4.
- FIG. 19 is a sectional side view of the welding booth 51a and a side view of the coating booth 51b, moving on rails 120 by means of rollers 121.
- Openings 202 in the ceiling 201 and in the floor 200 of the cabin allow the end of the suspended pipe part 1 to pass as well as the train 35 which has just been loaded using the beam 30 and lowered to the assembly plane 44 by the "lifting-arm-gripper" assembly as shown in FIGS. 23 to 26.
- This assembly includes a lifting block 14 mounted in longitudinal translation on the tower, retained by a cable 18 and provided at the front with extension arms 15 connected to a gripper 16 capable of retaining the full weight of the pipe in suspension to the bottom of the sea.
- Figure 24 is a side view of the lifting block 14 guided by means of pads 250 on guide rails 17 not shown.
- the lifting block is retained by the cable 18 turned around at least one pulley 257 and connected to a fixed point 258 secured to the structure of the tower
- Said cable is connected to the main winch 19 shown in FIG. 3.
- Two extension arms 15 are articulated at 256 in the lower part of the lifting block and are connected to a gripper 16 capable of retaining the full weight of the suspended pipe until bottom of the sea.
- the gripper is equipped with a self-tightening device with corners 260, marking or non-marking, as shown in FIG. 25.
- This gripper is opening so that it can be positioned around the pipe. Once in place, a lock system prevents it from opening and the corners are then put into action to resume the load.
- the device according to the invention has more means for moving the gripper 16 away from the main laying axis 12.
- an actuator 251 of the hydraulic jack type for example, is articulated at 252 on the body of the lifting block 14 on the one hand and at 253 on a gusset 254 secured to the two articulated arms 15.
- the gripper 16 is moved away from the laying axis 12 and thus any interference with the train 35 is avoided during its transfer to the tower.
- opening the gripper and its locking are provided with actuators not shown, similar to the actuator 251, to perform the maneuvers.
- Figure 25 is a front view of the assembly relating to Figure 24 and comprising a sectional view of the left part of the gripper, along a plane cutting the main laying axis 12, detailing the tightening corner.
- FIG. 26 is a section in top view of the gripper 16 comprising a front part 270 articulated at 271 and locked by means not shown.
- the length of the extension arm 15 is such that the arm allows the gripper to reach the axis 11 without the lifting block 14 having to enter the welding booth 51a.
- the guide rails 17 of the carriage 14 will stop above the substantially horizontal plane materialized by the top of the ceiling of the cabin (s). After alignment of the train 35 with the suspension line 1, the assembly is held in the coaxial position from the inside, by an alignment device not shown.
- a welding collar 122 consisting of an opening system, is placed around the pipe at the assembly plane 44 and is connected to a supply carousel 124 located on the ceiling, by via a bundle of lines 123 comprising electrical power cables, control cables and cables for supplying consumables, such as welding wire, shielding gases or any other product necessary for assembly lines or their protection by coating.
- the carousel 124 carrying the generators and the consumables is supported by a circular guide system, for example consists of rollers 126 rolling on a circular track not shown, secured to a structure 125 itself fixed to the ceiling by a multitude of points d attachment 127.
- the device according to the invention thus makes it possible, when the carousel 122 rotates around the pipe 1-35 to carry out the welding or protection operations, to synchronize the upper carousel in rotation so that the beam 123 remains substantially vertical throughout the rotation cycle. By doing so, it minimizes the necessary length of the beam lines and facilitates operator access to equipment, while minimizing the risk of damage to said beam or equipment on board the carousels.
- the welding booth 51a can be moved to the left thanks to the U-shaped opening 202 existing at the level of the ceiling 201 and the floor 200. To be able to escape the the carousel and its support are designed in the shape of a horseshoe as detailed in Figure 21.
- the coating booth 51b is moved to the left to be placed around the suspended pipe.
- the coating booth is equipped with specific means installed on carousels similar to those of the welding booth.
- the two booths 51a and 51b although separate, can be joined so as to create only one assembly which will then be moved to the right for welding operations and to the left for coating operations.
- the common partitions between the two substations can either remain in place and thus create a containment of each of the operations, or be eliminated and then constitute only a single cabin, however having the particularity of being able to be separated into two substations of independent work.
- Figure 20 is a plan view of the horseshoe carousel located on the ceiling of the welding booth.
- Figure 21 is a bottom view relating to Figure 19, detailing the U-shaped opening of the roof of the welding booth 51a.
- the cabin is in the extreme position to the right and the pipe 35 is near the bottom of the U.
- the movable part 124 of the carousel is indented in the shape of a horseshoe and receives at its periphery a series of rollers, located on a circular generator, and evenly spaced. Said rollers roll on a track 127, which is also circular and coaxial with the circular generator of the rollers.
- the track is secured to the ceiling of the cabin 51a by a plurality of supports, not shown.
- the movable part 124 of the carousel has on its right part a U-shaped opening which allows, when the cabin 51a is placed around the train 35, said train to reach the axis of rotation of the carousel, without the structure of the latter interfering with said train 35.
- the running track 125 has a discontinuity corresponding to the opening of the roof of the cabin 51a.
- the carousel is supplied with electric current by means of a rotating electrical joint consisting of a circular track of conductive metal, for example copper, secured to the rotating part 124 of the carousel and installed concentrically with its axis of rotation 245.
- Brushes wipers 242 are in intimate contact with the circular track and are supported by means, not shown, secured to the guide support 125.
- a conductor 241 brings the electric current to the wipers.
- at least two sets of friction pads are installed for each of the phases of electric current, and preferably in diametrically opposite position, so that the current is transmitted continuously during the operating cycle, during the rotation of the carousel.
- the device according to the invention can transmit electric power or control currents and will include as many "track-brushes-conductor" assemblies as necessary. Each of these sets will be isolated from its neighbors as well as from any surrounding metallic structure.
- Figure 22 is the same view as Figure 21 detailing the position of the horseshoe carousel in welding operation after it has turned by an angle ⁇ .
- the rollers will move on the circular track 125, except in the portion 202, corresponding to the roof opening, where each of the rollers will be successively in the air as shown on the roller 126a.
- the brushes 242 will be successively in the air, but because they are multiple for the same phase, the transmission of electric current will not be interrupted.
- the wiper 242a is shown here in the air while the wiper 242b is still in contact.
- the horseshoe carousel opening coincides with the roof opening 128 and the cabin can be moved to the left, without the assembly interfering with train 35.
- FIG. 23 is a side view of the welding booth 51a showing the operation of lowering the suspended pipe after the end of the assembly cycle of the train.
- the upper end of the pipe 1 is held, at the level of a collar 130 secured to the said pipe by means of the gripper 16 connected to the extension arms 15 secured to the lifting block 14 moving on the guide rail 17 of the main structure of the tower 10.
- the length of the extension arms is adjusted so that the elevator can position the upper end of the pipe 1 at the level of the assembly plane 44, while the block remains above the cabin 51a shown as being the higher of the two.
- the guide rails 17 can stop above the cabin, which allows minimize the width of the cabin roof opening.
- the work station groups all the equipment necessary for the operations in a single cabin.
- the cabin is fixed during operations, but its longitudinal position can advantageously be adjusted finely as a function of the inclination of the tower thanks to a guide system made up of rails 120, associated with rollers 121 secured to the cabin 210.
- the cabin is locked in movement thanks to a system of stops 220 and latches 221.
- the cabin has a ceiling 212 and at floor level 213 an opening 211 sized according to the characteristics of the pipes and the dimensions of the heavy and bulky accessories which must, during the installation operations, pass through the cabin 210.
- a carousel 122-126 is installed in the cabin ceiling, movable longitudinally on rails 216 not shown, by means of rollers 215.
- This horseshoe carousel having an opening to the right, can be released to the left of cabin 210 to make way for a similar carousel 222-226 carrying the equipment and consumables necessary for protecting the joints.
- the latter carousel has an opening directed to the left and can thus, by simple translation on the rails 216 by means of the rollers 215, be transferred from its garage position to its working position.
- means of controlling welding operations and possibly coating are installed at a fixed post.
- the control means 232 are secured to an articulated arm 231 itself secured to a support 230 resting for example on the floor 213 of the cabin 210.
- the assembly is shown in the folded position, the means control resting on a support 233.
- Figure 28 is the top view relating to Figure 27, showing the opening 211 in the cabin ceiling.
- FIG. 29 is a diagram in side view showing an embodiment of a virtual axis of rotation 11 making it possible to raise the beam 30 towards the tower 10 not shown, in such a way that the axis 35 of the not shown train cuts the axis 11 of inclination of the tower, regardless of the inclination of said ramp.
- a circular guide structure 300 is integral with the vessel 2 and the plane of the circle is perpendicular to the axis 11 and its center is located on said axis 11. Only the circular track has been shown, the main and secondary structures. are not shown.
- a structure 301 is integral with the beam 30 and carries at its end means 302, constituted here by rollers, which will collaborate with the circular track in such a way that, whatever the inclination of the ramp, the axis 35 cuts axis 11.
- a substantially similar result can be obtained by means of a combination of articulated arms organized in deformable trapezoids.
- the welding booth is in position, while the coating booth is in the fallback position.
- the welding booth is moved to its folded position and the coating cabin is put in the working position to carry out the protection operations and any non-destructive checks relating to the quality of the welding.
- the carriage takes up the tension of the assembly of the assembled pipe, the locking means located in the lower part of the tower are released and the assembly is lowered until the elevator located at the end of the carriage arm reaches the assembly plane area. In this position, the locking means are reactivated so as to resume the tension of the pipe, the elevator is released and the carriage is raised to the top of the tower awaiting the next train.
- the coating cabin is moved to its fallback position and the welding cabin is put into the working position, ready for the next cycle.
- the invention makes it possible to produce a universal device which allows the laying of rigid or non-rigid pipes, consisting of straight or unwound sections, according to a laying axis which can be chosen at will, which is therefore suitable for any type of pipe. and at any laying depth, as well as the simultaneous laying of two pipes.
- the invention is not limited to these exemplary embodiments.
- the device according to the invention can be used for laying sections of a few meters to several tens of meters as for laying pipes of great continuous length from a few tens of meters to several kilometers, wound on drums.
- These long continuous length pipes have ends capable of being connected using the device according to the invention.
- the device according to the invention is therefore intended both for laying rigid pipes as flexible pipes, in the form of sections or long continuous lengths.
- the characteristics specific to the laying of flexible pipes, as well as those specific to the laying of sections or large continuous lengths, may be present on the device according to the invention independently of each other.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Earth Drilling (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Pipeline Systems (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU45738/00A AU777104B2 (en) | 1999-04-30 | 2000-04-28 | Device for connecting and laying successive parts of a submarine pipeline from a boat and uses thereof |
DE60027145T DE60027145D1 (de) | 1999-04-30 | 2000-04-28 | Vorrichtung für die verbindung und die verlegung der aufeinanderfolgenden teile einer unterwasserleitung von einem schiff und deren verwendungen |
BR0004007-0A BR0004007A (pt) | 1999-04-30 | 2000-04-28 | Dispositivo para a ligação e colocação de porções sucessivas de um conduto submarino a partir de um navio, e, para a colocação de um conduto submarino a partir de um navio |
EA200101162A EA002850B1 (ru) | 1999-04-30 | 2000-04-28 | Устройство для соединения и укладки с борта судна последовательно располагающихся частей подводного магистрального канала передачи и применение этого устройства (варианты) |
US09/926,420 US6796742B1 (en) | 1999-04-30 | 2000-04-28 | Apparatus for the connection and laying of the successive parts of an offshore supply line from a vessel and applications thereof |
EP00927307A EP1173698B1 (fr) | 1999-04-30 | 2000-04-28 | Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications |
NO20015296A NO321537B1 (no) | 1999-04-30 | 2001-10-29 | Anordning for a forbinde og legge etterfolgende deler av en undervannsrorledning fra en bat og anvendelse av denne |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR99/05534 | 1999-04-30 | ||
FR9905534A FR2792991B1 (fr) | 1999-04-30 | 1999-04-30 | Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications |
FR9911584A FR2793540B1 (fr) | 1999-04-30 | 1999-09-16 | Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications |
FR99/11584 | 1999-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000066923A1 true WO2000066923A1 (fr) | 2000-11-09 |
Family
ID=26234938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/001155 WO2000066923A1 (fr) | 1999-04-30 | 2000-04-28 | Dispositif pour le raccordement et la pose des parties successives d'une conduite sous-marine depuis un navire et ses applications |
Country Status (10)
Country | Link |
---|---|
US (1) | US6796742B1 (fr) |
EP (1) | EP1173698B1 (fr) |
AT (1) | ATE322638T1 (fr) |
AU (1) | AU777104B2 (fr) |
BR (1) | BR0004007A (fr) |
DE (1) | DE60027145D1 (fr) |
EA (1) | EA002850B1 (fr) |
FR (1) | FR2793540B1 (fr) |
NO (1) | NO321537B1 (fr) |
WO (1) | WO2000066923A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011114027A1 (fr) | 2010-03-18 | 2011-09-22 | Saipem S.A. | Procede de depose d'une ligne sous-marine au fond de la mer |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1015924C2 (nl) * | 2000-08-11 | 2002-02-12 | Excalibur Engineering B V | Vaartuig voorzien van een inrichting voor het verwijderen resp. plaatsen van een onderstructuur van een boor- of productieplatform. |
BRPI0509532A (pt) * | 2004-03-30 | 2007-09-18 | Acergy Uk Ltd | método e aparelho para assentar artigos alongados |
CN101156013B (zh) * | 2005-02-08 | 2012-07-04 | 伊特里克公司 | 安装具有一或多个附件的离岸管线的海上布管系统 |
DE602005014536D1 (de) * | 2005-02-25 | 2009-07-02 | Itrec Bv | Offshoresystem zum Verlegen von Unterwasserrohren |
FR2911173B1 (fr) | 2007-01-10 | 2011-07-22 | Saipem Sa | Dispositif et procede de descente ou remontee de l'extremite d'une conduite sous marine a partir d'un navire de pose |
GB0702161D0 (en) | 2007-02-05 | 2007-03-14 | Technip France | Method and apparatus for laying a marine pipeline |
FR2922623B1 (fr) | 2007-10-23 | 2012-09-28 | Saipem Sa | Dispositif de retenue et maintien et procede de raccordement d'une conduite sous marine sur un support flottant. |
US8042306B2 (en) | 2007-11-15 | 2011-10-25 | Tony Jolly | System and method for erecting a tower |
US20090245940A1 (en) * | 2008-03-31 | 2009-10-01 | Heerema Marine Contractors Nederland B.V. | Rotatable multi-joint installation |
WO2009134116A1 (fr) | 2008-04-29 | 2009-11-05 | Itrec B.V. | Procédés et système d’installation d'une conduite marine |
GB0811437D0 (en) * | 2008-06-20 | 2008-07-30 | Saipem Spa | Pipe-laying vessel and method of laying a pipeline |
GB201000556D0 (en) | 2010-01-13 | 2010-03-03 | Saipem Spa | Undersea pipe-laying |
US20130028661A1 (en) * | 2011-07-28 | 2013-01-31 | Lee David Screaton | Non-Rigid Product Laying Apparatus |
NL2010511C2 (en) * | 2013-03-22 | 2014-09-24 | Itrec Bv | Marine pipeline installation vessel and method. |
GB2536419A (en) * | 2015-03-10 | 2016-09-21 | Petrofac Ltd | Pipe assembly station |
NL2017072B1 (en) * | 2016-06-29 | 2018-01-05 | Ihc Engineering Business Ltd | System and method |
NL2017484B1 (en) | 2016-09-16 | 2018-03-22 | Ihc Engineering Business Ltd | System, apparatus and method |
WO2018087324A1 (fr) * | 2016-11-10 | 2018-05-17 | Petrofac Services Ltd. | Structure de guidage de pose en j |
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US3860122A (en) | 1972-12-07 | 1975-01-14 | Louis C Cernosek | Positioning apparatus |
GB2095787A (en) * | 1981-03-31 | 1982-10-06 | Blohm Voss Ag | Pipe laying vessel |
EP0262545A1 (fr) * | 1982-03-31 | 1988-04-06 | N.I.S. Limited | Soudure et pose de pipe-lines |
EP0478742A1 (fr) | 1990-03-30 | 1992-04-08 | Coflexip | Dispositif et procede pour deroulement sensiblement vertical des conduites tubulaires flexibles. |
US5421675A (en) | 1993-11-18 | 1995-06-06 | Mcdermott International, Inc. | Apparatus for near vertical laying of pipeline |
EP0661488A1 (fr) * | 1993-12-29 | 1995-07-05 | McDERMOTT INTERNATIONAL, INC. | Dispositif pour la pose verticale de tuyaux |
GB2310267A (en) * | 1994-02-19 | 1997-08-20 | Coflexip Stena Offshore Ltd | Reel pipelaying vessel |
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WO1998050719A1 (fr) | 1997-05-06 | 1998-11-12 | Itrec B.V. | Tendeur |
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FR2310515A1 (fr) * | 1975-05-06 | 1976-12-03 | Petroles Cie Francaise | Procede d'assemblage et de pose d'une conduite sous-marine et dispositif de mise en oeuvre |
GB9120432D0 (en) * | 1991-09-25 | 1991-11-06 | Stena Offshore Ltd | Reel pipelaying vessel |
US6364573B1 (en) * | 1998-05-01 | 2002-04-02 | Benton F. Baugh | Jack mechanism for J-Lay pipelaying system |
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- 1999-09-16 FR FR9911584A patent/FR2793540B1/fr not_active Expired - Lifetime
-
2000
- 2000-04-28 US US09/926,420 patent/US6796742B1/en not_active Expired - Lifetime
- 2000-04-28 AU AU45738/00A patent/AU777104B2/en not_active Ceased
- 2000-04-28 AT AT00927307T patent/ATE322638T1/de not_active IP Right Cessation
- 2000-04-28 EA EA200101162A patent/EA002850B1/ru not_active IP Right Cessation
- 2000-04-28 BR BR0004007-0A patent/BR0004007A/pt not_active IP Right Cessation
- 2000-04-28 EP EP00927307A patent/EP1173698B1/fr not_active Expired - Lifetime
- 2000-04-28 WO PCT/FR2000/001155 patent/WO2000066923A1/fr active IP Right Grant
- 2000-04-28 DE DE60027145T patent/DE60027145D1/de not_active Expired - Fee Related
-
2001
- 2001-10-29 NO NO20015296A patent/NO321537B1/no unknown
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US3680322A (en) | 1970-04-15 | 1972-08-01 | Brown & Root | Pipeline laying system utilizing an inclined ramp |
US3860122A (en) | 1972-12-07 | 1975-01-14 | Louis C Cernosek | Positioning apparatus |
GB2095787A (en) * | 1981-03-31 | 1982-10-06 | Blohm Voss Ag | Pipe laying vessel |
EP0262545A1 (fr) * | 1982-03-31 | 1988-04-06 | N.I.S. Limited | Soudure et pose de pipe-lines |
EP0478742A1 (fr) | 1990-03-30 | 1992-04-08 | Coflexip | Dispositif et procede pour deroulement sensiblement vertical des conduites tubulaires flexibles. |
US5421675A (en) | 1993-11-18 | 1995-06-06 | Mcdermott International, Inc. | Apparatus for near vertical laying of pipeline |
EP0661488A1 (fr) * | 1993-12-29 | 1995-07-05 | McDERMOTT INTERNATIONAL, INC. | Dispositif pour la pose verticale de tuyaux |
US5464307A (en) | 1993-12-29 | 1995-11-07 | Mcdermott International, Inc. | Apparatus for near vertical laying of pipeline |
GB2310267A (en) * | 1994-02-19 | 1997-08-20 | Coflexip Stena Offshore Ltd | Reel pipelaying vessel |
US5823712A (en) | 1995-03-10 | 1998-10-20 | Allseas Group S.A. | Method and installation for laying a pipeline on a surface located under water |
WO1998050719A1 (fr) | 1997-05-06 | 1998-11-12 | Itrec B.V. | Tendeur |
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WO2011114027A1 (fr) | 2010-03-18 | 2011-09-22 | Saipem S.A. | Procede de depose d'une ligne sous-marine au fond de la mer |
Also Published As
Publication number | Publication date |
---|---|
NO20015296D0 (no) | 2001-10-29 |
ATE322638T1 (de) | 2006-04-15 |
EP1173698A1 (fr) | 2002-01-23 |
NO20015296L (no) | 2001-12-21 |
DE60027145D1 (de) | 2006-05-18 |
EA200101162A1 (ru) | 2002-04-25 |
FR2793540B1 (fr) | 2001-08-10 |
BR0004007A (pt) | 2002-04-30 |
EP1173698B1 (fr) | 2006-04-05 |
AU4573800A (en) | 2000-11-17 |
AU777104B2 (en) | 2004-09-30 |
EA002850B1 (ru) | 2002-10-31 |
FR2793540A1 (fr) | 2000-11-17 |
NO321537B1 (no) | 2006-05-22 |
US6796742B1 (en) | 2004-09-28 |
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