WO2010052423A2 - Procédé de mise en place d'une tour d'exploitation d'un fluide dans une étendue d'eau avec un engin de traction - Google Patents
Procédé de mise en place d'une tour d'exploitation d'un fluide dans une étendue d'eau avec un engin de traction Download PDFInfo
- Publication number
- WO2010052423A2 WO2010052423A2 PCT/FR2009/052124 FR2009052124W WO2010052423A2 WO 2010052423 A2 WO2010052423 A2 WO 2010052423A2 FR 2009052124 W FR2009052124 W FR 2009052124W WO 2010052423 A2 WO2010052423 A2 WO 2010052423A2
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- WO
- WIPO (PCT)
- Prior art keywords
- buoy
- water
- point
- downstream
- section
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/013—Connecting a production flow line to an underwater well head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B22/18—Buoys having means to control attitude or position, e.g. reaction surfaces or tether
Definitions
- the present invention relates to a method for mounting a fluid operating tower in a body of water, of the type comprising the following steps:
- buoy bringing a buoy to the surface of the body of water substantially facing an anchoring region on the bottom of the body of water, the buoy comprising a buoyancy chamber;
- the connecting step comprising the activation of a traction unit for raising the downstream point on the buoy;
- Such towers are intended to convey fluid produced in the bottom of a body of water to the surface, across the body of water.
- This fluid consists in particular of liquid and / or gaseous hydrocarbons and water collected in production wells formed in the bottom of the body of water.
- Such a tower generally comprises a lower connecting pipe to the production assembly disposed on the bottom of the body of water, a substantially vertical riser, made from a flexible pipe or a rigid pipe, a buoy holding the riser in its upright position, and an anchor element of a lower point of the riser.
- the tower further includes a flexible upper link pipe connecting the riser to a floating surface assembly.
- a flexible upper link pipe connecting the riser to a floating surface assembly.
- This type of tower has a relatively simple structure, since its holding in vertical position is ensured exclusively by the anchor element in the bottom of the body of water, and by the tension generated by the buoyancy of the buoy connected to the upper point of the riser.
- the buoy of buoyancy after being transported on a ship to the installation site of the tower, must be submerged to a depth sufficient to avoid the effects of swell and current.
- the buoy is gradually lowered into the body of water by lifting it out of the vessel with the aid of a handling crane, as described for example in FR 2 91 1 907.
- the buoy To allow vertical maintenance of the pipe in the body of water, the buoy must be very bulky, given the weight of the riser. Thus, the buoy may have a diameter greater than several meters for a height of several tens of meters.
- the buoy generally has a cylindrical shape elongate along a vertical axis, in particular to facilitate the connection of the riser to the upper connecting pipe, when this connection is under the buoy.
- buoys elongated vertically are very unstable when immersed in the body of water.
- An object of the invention is therefore to obtain a method of setting up a tower comprising a buoy buoyancy, which is simple to implement, especially with vessels that do not have large capacity hoist cranes.
- the subject of the invention is a method of the aforementioned type, characterized in that during the connection step, the buoy is carried in the body of water substantially exclusively by its own buoyancy.
- the method according to the invention may comprise one or more of the following characteristics taken separately or according to any combination (s) technically possible (s):
- the traction unit is carried by the buoyancy chamber at least during the connecting step;
- the intermediate section is flexible over substantially its entire length between the downstream point and the upstream point, the intermediate portion being progressively deployed in the body of water between the downstream point fixed on the buoy and a laying structure floating on the water expanse during the deployment stage;
- the step of connecting the downstream point comprises immersing the downstream point from the floating installation structure in the body of water, and pulling the downstream point towards the buoy by the traction unit, the section intermediate occupying a chained configuration between the floating laying structure and the buoy during the deployment step;
- the pull of the downstream point is carried out after the total immersion of the buoy under the surface of the body of water;
- the buoy delimits a passage lumen of the conveying duct opening upwards and downwards, the connection step of the downstream point comprising the introduction from below upwards of the downstream point through the passage lumen;
- the buoy has a height, taken along a vertical axis when the intermediate portion is energized, less than 1.5 times its maximum transverse dimension, taken transversely to the vertical axis, the feeding step comprising the moving the buoy between a remote position located away from the anchoring region and a positioning position facing the anchoring region, keeping the buoy partially immersed on the surface of the extension water;
- the movement of the buoy comprises towing the buoy partially immersed in the body of water between its remote position and its position of installation by at least one floating tow structure;
- the method comprises connecting on the intermediate section of a lower section to be connected to the bottom assembly and an upper flexible section to be connected to the entire surface;
- the method comprises an additional connecting step of an auxiliary connection point located on the upper flexible section downstream of the downstream connection point between the transport pipe and the buoy with a connection point located on the buoy;
- the additional connection step comprises the establishment of a flexible link between the auxiliary connection point located on the upper flexible section and the connection point located on the buoy;
- the buoy has a height, taken along a vertical axis when the intermediate section is energized, greater than or equal to 1, 5 times its maximum transverse dimension, taken transversely to the vertical axis.
- the invention further relates to a method of mounting a fluid operating tower in a body of water, of the type comprising the following steps:
- buoy bringing a buoy to the surface of the body of water substantially facing an anchoring region on the bottom of the body of water, the buoy comprising a buoyancy chamber;
- the process according to the invention may comprise one or more of the optional characteristics of the process defined above, as well as one or more of the following characteristic (s), taken singly or according to any technically possible combination (s):
- the additional connection step comprises the establishment of a flexible link between the auxiliary connection point located on the upper flexible section and the connection point located on the buoy or upstream of the buoy;
- the flexible link is arranged in a chain between the connection point and the auxiliary connection point;
- the flexible link comprises an upstream region fixed on the auxiliary connection point, a downstream region fixed on the connection point and a ballast element connecting the downstream region to the upstream region;
- the additional connection step comprises the rigid attachment of the auxiliary connection point located on the upper flexible section on the connection point located on the buoy.
- the invention also relates to a fluid operating tower through a body of water, of the type comprising:
- a fluid transport pipe immersed in a body of water, the transport pipe comprising a lower connecting section intended to be connected to a bottom assembly producing fluid, a flexible upper link section intended to be connected to a surface assembly and an intermediate section placed between the upper flexible section and the lower section;
- the buoy immersed completely below the surface of the body of water, the buoy comprising a buoyancy chamber, the buoy being connected to a downstream point of the intermediate section to maintain the intermediate section located between the downstream point and the upstream point in a substantially vertical configuration under tension, characterized in that an auxiliary connection point located on the upper flexible section in downstream of the downstream connection point between the buoy and the transport pipe is connected with a connection point located on the buoy or upstream of the buoy.
- the tower according to the invention may comprise one or more of the optional features defined above, as well as one or more of the following characteristic (s), taken singly or according to any combination (s) ( s) technically possible:
- the buoy has a height, taken along a vertical axis when the intermediate section is energized, greater than or equal to 1, 5 times its maximum transverse dimension, taken transversely to the vertical axis;
- the buoy has a height, taken along the vertical axis, less than 1, 5 times in relation to its maximum transverse dimension, taken transversely to the vertical axis;
- the intermediate section of the transport pipe is flexible over substantially its entire length between the upstream point and the downstream point;
- An auxiliary connection point located on the upper flexible section downstream of the downstream connection point between the buoy and the transport pipe is connected with a connection point located on the buoy, preferably by a flexible link;
- the flexible link is arranged in a chain between the connection point and the auxiliary connection point;
- the flexible link comprises an upstream region fixed on the auxiliary connection point, a downstream region fixed on the connection point and a ballast element connecting the downstream region to the upstream region;
- the auxiliary connection point located on the upper flexible section is rigidly attached to the connection point located on the buoy;
- the buoy comprises a fastening arm projecting laterally from the buoyancy chamber, the connection point being located on the fixing arm;
- the buoy comprises at least one stabilizing member adapted to project downwardly from a lower surface of the buoyancy chamber;
- the stabilizing member is movable relative to the buoyancy chamber between an upper configuration retracted into the buoyancy chamber and a lower configuration deployed downwardly from the buoyancy chamber.
- FIG. 1 is a schematic view, taken in partial section along a median vertical plane of a first fluid operating tower according to the invention
- FIG. 2 is a schematic perspective view of an example of a buoy for the tower of Figure 1;
- FIG. 3 is a view similar to Figure 1 in a first step of setting up the tower of Figure 1 by the method according to the invention
- FIG. 4 is a view similar to Figure 3 in a second step of the method according to the invention.
- FIG. 5 is a view similar to Figure 3 in a third step of the method according to the invention.
- FIG. 6 is a view similar to Figure 3 in a fourth step of the method according to the invention.
- FIG. 7 is a partial sectional view along a median vertical plane of a second fluid operating tower according to the invention.
- FIG. 8 is an enlarged schematic view of a detail of a third fluid operating tower according to the invention.
- FIG. 9 is a view similar to FIG. 8 of a fourth fluid operating tower according to the invention.
- FIG. 10 is a view similar to Figure 8 of a fifth operating tower according to the invention.
- - Figure 1 1 is a partial top view of a buoy variant for an operating tower according to the invention;
- FIG. 12 is a schematic perspective view of another alternative buoy for a tower according to the invention, the buoy being installed on the tower and comprising a stabilizing member in an expanded configuration;
- FIG. 13 is a view similar to Figure 12, before installation of the tower, the stabilizing member occupying a retracted configuration.
- upstream and downstream refer to the normal direction of circulation of the fluid in a pipe.
- a first installation 10 operating fluid in a body of water 12, installed by a method of implementation according to the invention, is shown schematically in Figure 1.
- This installation is intended to convey a fluid collected in the bottom 14 of the body of water 12 to the surface 16 of the body of water.
- the collected fluid is for example a gaseous or liquid hydrocarbon from a well (not shown) formed in the bottom 14 of the body of water.
- the body of water 12 is a lake, a sea or an ocean.
- the depth of the water extent 12, taken between the surface 16 and the bottom 14 opposite the installation 10 is greater than 30 m and is for example between 30 m and 3500 m.
- the installation 10 comprises a fluid production assembly 18 situated on the bottom of the body of water, hereinafter referred to as the "bottom assembly", a first tower 20 according to the invention, and a surface assembly 22 intended to recover and store the fluid collected in the production assembly 18 conveyed through the tower 20.
- the bottom assembly 18 comprises for example at least one wellhead and / or a production line (not shown) located on the bottom 14 of the body of water.
- the surface assembly 22 is a floating assembly. It is for example formed by a ship, a barge, a floating platform, or a floating unit for recovery, storage and treatment of hydrocarbons, designated by the acronym "FPSO”.
- the surface assembly is alternatively a floating storage and regasification unit designated by the acronym "FSRU”.
- the surface assembly 22 floats on the body of water in the vicinity of the bottom assembly 18.
- the tower 20 comprises a fluid transport pipe 24 connecting the bottom assembly 18 to the surface assembly 22, an anchoring element 25 of the pipe 24, fixed in an anchoring region on the bottom 14, and a buoy 26 for holding under tension at least one intermediate section of the transport pipe 24 in a substantially vertical configuration in the body of water 12.
- the transport pipe 24 comprises, from bottom to top in FIG. 1, a lower section 28 connected to the bottom assembly 18, an intermediate section formed by a substantially vertical riser 30, a coupling 32 and an upper section 34. connecting to the surface assembly 22.
- the transport pipe 24 is flexible over substantially its entire length, taken between the bottom assembly 18 and the surface assembly 22.
- the lower section 28 is formed for example by a lower connecting hose 36 extending in a bent or inclined manner with respect to the bottom 14 of the body of water 12.
- the lower hose 36 is connected upstream to the assembly of bottom 18, and is connected downstream to the riser 30.
- the riser 30 extends substantially vertically along a vertical axis AA 'in the body of water 12, between a lower upstream point 38, connected to the anchoring element 25 and an upper downstream point 40, connected to the buoy 26.
- the riser 30 is formed by a flexible pipe 42 over substantially its entire length.
- flexible or “flexible pipe” within the meaning of the present invention, a pipe as described in the normative documents published by the American Petroleum Institute (API), API 17J and API RP17B, well known to man of career.
- API American Petroleum Institute
- API 17J and API RP17B
- This definition embraces indifferently the flexible conduits of unbound type ("unbounded” in English), or bound (“bounded” in English).
- the flexible pipe 42 may be a "bundle” type composite bundle comprising at least one fluid transport tube and a set of electrical or optical cables suitable for transporting electrical or hydraulic power, or information between the bottom 14 and the surface 16 of the body of water
- Such a flexible pipe has a relatively small radius of bending without damage (“MBR” or “minimal bending radius” in English), for example a few meters which makes it particularly suitable for being rolled up and unrolled in a reversible manner without plastic deformation. significant on a drum or basket, the drum or basket being carried by a laying ship, as will be seen below.
- MRR radius of bending without damage
- the length of the riser 30, taken between the upper point 40 and the lower point 38 is greater than 20 m and is for example between 500 m and 3500 m.
- connection 32 typically a gooseneck (in English) is in this example fixed on the buoy 26. It is connected upstream to the downstream point 40 of the riser 30. It is connected downstream to the upper section 34 link.
- connection 32 is formed by a rigid tube shaped gooseneck.
- the connector 32 is formed by a flexible pipe as described above, provided for example curvature limiters or buoyancy elements.
- the upper portion 34 is formed by an upper hose 50 extending between the connector 32 and the surface assembly 22.
- the upper hose 50 has a catenary configuration, substantially J.-shaped.
- the upper hose 50 is deformable to absorb the movements of the surface assembly 22 due to disturbances of the body of water such as swell, current or wind.
- the section 34 thus substantially prevents the transmission of these movements from the surface assembly 22 to the column rising 30 whose downstream point 40 remains substantially immobile in the body of water.
- the lower section 28, riser 30, intermediate fitting 32, and upper section 34 internally define a continuous fluid flow passage 52 extending between the bottom assembly 18 and the surface assembly 22 to allow the transporting the fluid between these assemblies 18, 22.
- the anchoring element 25 comprises an anchoring member 60 fixed in the anchoring region on the bottom 14 of the water body and a flexible line 62 connecting the anchoring member 60 to the upstream point 38 of the riser.
- the anchoring member 60 is for example formed by a battery housed in the bottom 14 of the body of water or by a suction anchor.
- the flexible line 62 extends vertically along the axis A-A 'between the anchoring element 60 and the upstream point 38.
- the buoy 26 is of substantially flat shape when the tower 20 is mounted in the body of water 12.
- the buoy 26 thus has a height, taken along the axis A-A ', less than its maximum transverse dimension, taken perpendicularly to the axis A-A'.
- the buoy 26 is advantageously of cylindrical shape with axis A-A '.
- the height H of the buoy is advantageously less than 1.5 times, in particular less than or equal to 1 times the maximum transverse dimension of the buoy, which in this example is the diameter D of the cylinder.
- the height H of the buoy is greater than or equal to 1.5 times the maximum transverse dimension of the buoy.
- the buoy 26 comprises a buoyancy chamber 70 internally defining at least one sealed compartment 72 adapted to be filled selectively with gas or liquid, and means 74 for selective filling of liquid and gas in the compartment 72.
- the buoy 26 further comprises means 76 for connection to the downstream point 40 of the riser 30, visible in FIG. 1.
- the buoyancy chamber 70 delimits a through-hole 78 of axis AA 'for the passage of the column rising 30.
- the light 78 opens up and down on either side of the box 70.
- the or each compartment 72 extends around the light 76 in the box 70.
- the filling means 74 are adapted to selectively introduce gas or liquid into the or each compartment 72 to selectively increase or decrease the buoyancy of the buoy 26.
- connection means 76 comprise at least one fastening collar 80, fixed on the downstream point 40 of the column 30.
- the riser 30 is introduced into the lumen 78 to its downstream point 40.
- the downstream point 40 is secured to the buoy 26 via the collar 80.
- the connector 32 projects from an upper surface 82 of the buoy 26.
- This method is implemented using a ship 90 for laying the transport pipe 24 and using at least one ship 92A, 92B towing the buoy 26 separate from the laying ship 90.
- the method is implemented using two ships 92A, 92B towing.
- the pipe members 36, 42, 50 for forming the transport pipe 24 are brought into the vicinity of the bottom assembly 18 by means of the laying ship 90.
- the lower hose 36, the upper hose 50, and the flexible hose 42 are transported by the laying ship 90, for example by being wound on a laying drum or in a basket.
- the anchoring element 25 is installed in the bottom of the body of water in the vicinity of the bottom assembly 18.
- the anchoring member 60 is fixed in the bottom 14 of the extension of water.
- the buoy 26 is towed by being partially immersed, with its upper surface 82 located outside the body of water 12, between a position remote from the anchoring region of the element 25 and a position of placement located substantially opposite and above the anchoring region of the element 25.
- the buoy 26 extends substantially horizontally with its vertical axis A-A '.
- the buoy 26 having a substantially flat shape, it is very insensitive to the movements of the surface 16 of the body of water 12, including the swell, the current or the wind, so that it can be transported from safe manner by being only partially immersed in the body of water 12, with towing vessels 92A, 92B. It is also a workstation thanks to its large flat top surface 82.
- the towing distance of the buoy 26, which horizontally separates the position remote from the positioning position is greater than several hundred meters, or even several hundred kilometers.
- the buoy 26 is embarked on a partially submersible barge, then is immersed in water by immersion of the barge, before being towed.
- buoy 26 occupies its positioning position shown in Figure 3, it is maintained in a horizontal position by the towing vessels 92A, 92B using deployable mooring lines 94.
- a traction vehicle 96 is then mounted on the buoy 26, for example on its upper surface 82.
- This traction unit 96 is formed in particular by a winch 96 having a deployable line 98 traction.
- the line 98 is unwound to be introduced from top to bottom through the central lumen 78 of the buoy 26. The line 98 is then brought to the laying ship 90 to be connected to the flexible pipe 42 at the downstream point 40 .
- the winch 96 is then activated to bring the downstream point 40 closer to the buoy 26, by retracting an increasing length of the line 98 on the winch 96. Simultaneously, an increasing length of the flexible pipe 42 is unrolled from the laying ship 90.
- the flexible pipe 42 adopts a substantially U-shaped catenary shape between the laying ship 90 and the buoy 26.
- the distance separating the laying ship 90 from the buoy 26 being relatively high, for example greater than 50 m, the radius of curvature of the flexible pipe 42 in this configuration is raised to prevent damage to the flexible pipe 42.
- the pull of the line 98 continues until the connection 32 and the downstream point 40 enter the lumen 78 from below, then ascend along the lumen 78 before being extracted out of the lumen 78 by the high.
- the connector 32 protrudes upwardly from the upper surface 82.
- the downstream point 40 is located substantially at the upper surface 82.
- the fixing collar 80 is then put in place to immobilize the downstream point 40 with respect to the buoy 26.
- the traction line 98 is then disconnected from the downstream point 40 and the winch 96 is disassembled away from the buoy 26.
- the mooring lines 94 are released and the filling means 74 are activated to introduce liquid into the compartments 72 to reduce the buoyancy of the buoy 26.
- the buoy 26 is then lowered and immersed completely in the body of water 12, to a depth greater than several tens of meters, in a region of the body of water 12 which is not affected by the swell. or waves, as shown in Figure 5.
- the buoy 26 retains its horizontal orientation during its descent, with its axis A-A 'substantially vertical according to its height.
- a corresponding length of the flexible pipe 42 is unrolled from the laying ship 90.
- the increasing weight of the flexible pipe 42 deployed promotes the descent of the buoy 26 in the body of water 12.
- the flexible pipe 42 is then totally immersed and the upstream point 38 is lowered below the downstream point 40 to the vicinity of the bottom 14 facing the anchoring element 25.
- the upstream point 38 of the flexible pipe 42 is then fixed on the anchoring element 60 via the anchor line 62.
- a lower hose 36 is lowered by a drop line 100 deployed from the laying ship 90, as shown in FIG. 6.
- the lower hose 36 is then connected to the riser 30 and to the bottom assembly 18 to form the lower section of the transport pipe 24.
- the buoyancy of the buoy 26 is possibly modified to apply between the downstream point 40 and the upstream point 38, via the buoy 26, a pulling force directed upwards, this force being compensated by the force of retained by the anchor line 62.
- the flexible pipe 42 thus forms, between the upstream point 38 and the downstream point 40, a riser 30 extending vertically along the axis A-A ', held in vertical position and under tension along the axis. AA 'between the buoy 26 and the anchoring element 25.
- the upper hose 50 is lowered into the body of water 12 to be connected to the fitting 32 and to the surface assembly 22, thus forming the upper section 34 of the pipe 24.
- the continuous passage 52 of hydrocarbon circulation between the bottom assembly 18 and the surface assembly 22 is then established successively through the lower section 28, the riser 30, the coupling 32 and the upper section 34. collected by the bottom assembly 18 is then transported to the surface assembly 22 through the passage 52.
- the buoy 26 is immersed under the body of water, before the downstream point 40 of the riser 30 is fixed on the buoy.
- the buoy 26 is then provided with a winch 96 suitable for being operated while being immersed under the body of water 12.
- a second installation 120 according to the invention is shown in FIG. 7.
- the tower 20 of the second installation 120 comprises a buoy 26 disposed above the downstream point 40 and at the above the fitting 32.
- the connection means 76 comprise a ring 122 secured to the flexible pipe 42 at the downstream point 40 and a flexible chain 124 connecting the ring 122 to a lower surface 126 of the buoy 26.
- the method of setting up the tower 20 is facilitated in particular by the introduction of a low capacity winch on the buoy 26 to draw the downstream point 40 of the transport pipe 30 and deploy this pipe chain between the laying ship 90 and the buoy 26.
- the buoy 26 is also stable during its immersion in the body of water 12. It retains substantially its orientation during its descent, which facilitates its handling.
- the lower section 28 of the pipe 24 is formed by a rigid tubular element which can not be wound on a drum or in a basket without substantial plastic deformation.
- the intermediate portion 30 is flexible over substantially its entire length.
- the upstream point 38 of the flexible pipe 42 is fixed directly to the anchoring element 60 immobilized in the bottom of the body of water 12, without using a flexible anchor line 62.
- the buoy 26 is carried in the body of water 12 substantially exclusively by its own buoyancy, or on the surface 16 of the water body 12 being partially immersed, or under the surface 16, away from the bottom 14, being fully immersed.
- the buoy 26 is not suspended by being held upwardly by a traction line fixed on its upper surface and disposed above its upper surface, such as for example a line of a crane carried by a ship.
- FIG. 1 A third operating installation 130 according to the invention is shown in FIG.
- the upper section 34 is connected to the intermediate section 30 at the level of the buoy 26, for example on the upper surface of the buoyancy chamber 70.
- the tower 20 is devoid of a rigid connection 32 in beak of swan.
- the upper section 34 comprises, from upstream to downstream, a first substantially vertical section 132 connected to the buoy, a second curved U-shaped section 134 of concavity directed downwards, a third curved U-shaped section 136 of concavity directed upwardly 136 and a fourth substantially vertical section 138 connected to the surface assembly 22.
- the first section 132 and the second section 134 are provided with floats 140 distributed along their length to ensure the maintenance of the flexible upper section 34 in a wave configuration, designated by the English term "steep-wave".
- the tower 20 further comprises a means 142 for limiting the torsion movements of the riser 30.
- the means 142 is formed by a continuous flexible link 144 connecting a first connection point 146 located on the buoy 26 to a auxiliary connecting point 148 located on the upper flexible section 34 away from the connection point between the intermediate section 30 and the upper section 34, and away from the downstream point 40 of attachment to the buoy 26.
- the link 144 is substantially continuous over its entire length. It is hanged in a chain between the points 146, 148.
- the point of connection 146 is located on a lateral surface of the buoyancy chamber 70 located on the same side as the third section 136 of the flexible upper section 34.
- the auxiliary connection point 148 is located on a rising portion of the third U-shaped section 136, away from the lowest point.
- the buoy 26 further comprises a ballast element 149 located opposite the point of connection 146 with respect to a vertical axis of the box 70, to compensate for the weight of the flexible link 144.
- At least a portion of the transport pipe 24 of non-zero length extends between the downstream point 40 located on the buoy and the auxiliary connection point 148 located above and away from the buoy 26.
- the flexible link 144 is mounted between the connection point 146 and the auxiliary connection point 148 once the flexible section 34 is connected to the riser 30.
- the flexible link 144 then generates a friction force in the water substantially perpendicular to the vertical axis A-A 'of the riser 30 preventing or limiting the torsion of this column 30.
- a fourth installation 150 according to the invention is shown in FIG. 9.
- the flexible link 144 forming the torsion limitation means 142 comprises an upstream flexible region 152 fixed on the connection point 146 a downstream flexible region 154 attached to the auxiliary connection point 148 and a ballast element 156 connecting at their lower points the upstream flexible region 152 and the downstream flexible region 154.
- the flexible link 144 is substantially V-shaped.
- the assembly and operation of the fourth installation 150 is moreover identical to that of the third installation 130.
- FIG. 1 A fifth installation 160 according to the invention is shown in FIG. 1
- the transport pipe 24 comprises a swan beak fitting 32 interposed above the buoy 26.
- the auxiliary connecting point 148 is located at the upstream end of the flexible upper section 34, or slightly downstream of this end. It is fixed rigidly on a connection point 146 defined on the periphery of the buoyancy chamber 70.
- the upper flexible section 34 has a catenary shape with a substantially U-shaped lower section 162 concavity directed upwards and a substantially vertical upper section 164 connected to the surface assembly 22.
- the limiting means 142 are formed by the rigid connection between the auxiliary connection point 148 and the connection point 146.
- the buoy 26 has two lateral connecting arms 170A, 170B which protrude laterally away from the buoyancy chamber.
- Each arm 170A, 170B has a free end 172 connected to the other arm to thereby define a support of generally triangular shape.
- the attachment point 146 is located at the free ends 172, radially away from the periphery of the buoyancy chamber 70.
- the buoy 26 comprises a stabilizing member 180 movably mounted in the central lumen 78 of the buoyancy chamber 70.
- the stabilizing member 180 is formed by a rigid vertical hollow tube 182 provided at its ends with abutment flanges 184, 186. It internally defines a channel 188 for passage of the transport pipe 24.
- the stabilizer member 180 is movably mounted in the buoyancy buoyancy box 70 along a vertical axis A-A 'between a retracted top configuration, shown in Fig. 13, and a deployed lower configuration shown in Fig. 12.
- the rigid tube 182 projects upward from an upper surface 190 of the buoyancy chamber 70.
- the length of the rigid tube 182 projecting towards the bottom from a bottom surface 192 of the buoyancy chamber 70 is minimal or even zero.
- the draft of the buoy 26 is thus substantially equal to that of the buoyancy chamber 70.
- the tube 182 has been moved down. Its protruding length from the bottom surface 192 is maximum. The draft of the buoy 26 is then much greater than that of the buoyancy chamber 70, which increases the stability of the buoy 26 when it is partially immersed in the body of water.
- the end flange 184 is disposed in abutment on the upper surface 190 to retain the tube 182.
- the transport conduit 24 is disposed through 188 as shown in FIG.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2742501A CA2742501C (fr) | 2008-11-05 | 2009-11-03 | Procede de mise en place d'une tour d'exploitation d'un fluide dans une etendue d'eau avec un engin de traction |
EP09768136A EP2344796A2 (fr) | 2008-11-05 | 2009-11-03 | Procédé de mise en place d'une tour d'exploitation d'un fluide dans une étendue d'eau avec un engin de traction |
US13/127,246 US8882390B2 (en) | 2008-11-05 | 2009-11-03 | Method for installing an operating rig for a fluid in a body of water with a traction unit |
AU2009312648A AU2009312648B2 (en) | 2008-11-05 | 2009-11-03 | Method for installing an operating rig for a fluid in a body of water with a traction unit |
BRPI0921085A BRPI0921085A2 (pt) | 2008-11-05 | 2009-11-03 | processo de montagem de uma torre de exploração de fluido em uma massa de água |
AP2011005720A AP2011005720A0 (en) | 2008-11-05 | 2009-11-03 | Method for installing an operating rig for a fluidin a body of water with a traction unit. |
EG2011050701A EG26777A (en) | 2008-11-05 | 2011-05-05 | Method for installing a fluid operating platform in a water body with a tensioning unit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0857521A FR2938001B1 (fr) | 2008-11-05 | 2008-11-05 | Procede de montage d'une tour d'exploitation d'un fluide dans une etendue d'eau et tour d'exploitation associee. |
FR0857521 | 2008-11-05 | ||
FR0952388A FR2938002B1 (fr) | 2008-11-05 | 2009-04-10 | Procede de mise en place d'une tour d'exploitation d'un fluide dans une etendue d'eau avec un engin de traction |
FR0952388 | 2009-04-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010052423A2 true WO2010052423A2 (fr) | 2010-05-14 |
WO2010052423A3 WO2010052423A3 (fr) | 2011-03-03 |
Family
ID=40674110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/052124 WO2010052423A2 (fr) | 2008-11-05 | 2009-11-03 | Procédé de mise en place d'une tour d'exploitation d'un fluide dans une étendue d'eau avec un engin de traction |
Country Status (10)
Country | Link |
---|---|
US (1) | US8882390B2 (fr) |
EP (1) | EP2344796A2 (fr) |
AP (1) | AP2011005720A0 (fr) |
AU (1) | AU2009312648B2 (fr) |
BR (1) | BRPI0921085A2 (fr) |
CA (1) | CA2742501C (fr) |
EG (1) | EG26777A (fr) |
FR (2) | FR2938001B1 (fr) |
MY (1) | MY159482A (fr) |
WO (1) | WO2010052423A2 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102147620B (zh) * | 2010-12-17 | 2012-08-22 | 天津大学 | 一种海洋微结构剖面测量系统速度与姿态调节机构 |
FR2973064B1 (fr) * | 2011-03-23 | 2013-03-29 | Technip France | Methode d'installation assistee d'une colonne sous-marine montante |
FR2981721B1 (fr) * | 2011-10-21 | 2013-11-08 | Technip France | Methode d'installation d'une tour autoportee d'extraction des hydrocarbures |
US20150060079A1 (en) * | 2013-09-04 | 2015-03-05 | Wellstream International Limited | Riser assembly and method |
GB2587344B (en) * | 2019-09-20 | 2021-09-29 | Equinor Energy As | Subsea mounting of ancillary equipment on an elongate member |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2911907A1 (fr) | 2007-01-26 | 2008-08-01 | Technip France Sa | Installation de conduite montante flexible de transport d'hydrocarbures. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065822A (en) * | 1976-02-27 | 1978-01-03 | Texaco Inc. | Single point mooring with strain relief anchoring |
US4182584A (en) * | 1978-07-10 | 1980-01-08 | Mobil Oil Corporation | Marine production riser system and method of installing same |
GB8523510D0 (en) * | 1985-09-24 | 1985-10-30 | British Petroleum Co Plc | Tethered buoyant system |
FR2768457B1 (fr) * | 1997-09-12 | 2000-05-05 | Stolt Comex Seaway | Dispositif de transport sous-marin de produits petroliers a colonne montante |
NO319945B1 (no) * | 1998-10-14 | 2005-10-03 | Statoil Asa | Lasteboye |
AU2001291717B2 (en) * | 2000-08-01 | 2004-08-19 | Single Buoy Moorings Inc. | Method and structure for connecting a floating structure with rope anchor lines to the seabed |
US7025533B1 (en) * | 2004-09-21 | 2006-04-11 | Kellogg Brown & Root, Inc. | Concentrated buoyancy subsea pipeline apparatus and method |
GB0510536D0 (en) * | 2005-05-24 | 2005-06-29 | Subsea 7 Bv | Method |
-
2008
- 2008-11-05 FR FR0857521A patent/FR2938001B1/fr not_active Expired - Fee Related
-
2009
- 2009-04-10 FR FR0952388A patent/FR2938002B1/fr active Active
- 2009-11-03 WO PCT/FR2009/052124 patent/WO2010052423A2/fr active Application Filing
- 2009-11-03 BR BRPI0921085A patent/BRPI0921085A2/pt not_active IP Right Cessation
- 2009-11-03 MY MYPI2011001960A patent/MY159482A/en unknown
- 2009-11-03 AU AU2009312648A patent/AU2009312648B2/en not_active Ceased
- 2009-11-03 US US13/127,246 patent/US8882390B2/en not_active Expired - Fee Related
- 2009-11-03 EP EP09768136A patent/EP2344796A2/fr not_active Withdrawn
- 2009-11-03 CA CA2742501A patent/CA2742501C/fr not_active Expired - Fee Related
- 2009-11-03 AP AP2011005720A patent/AP2011005720A0/xx unknown
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2011
- 2011-05-05 EG EG2011050701A patent/EG26777A/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2911907A1 (fr) | 2007-01-26 | 2008-08-01 | Technip France Sa | Installation de conduite montante flexible de transport d'hydrocarbures. |
Also Published As
Publication number | Publication date |
---|---|
AU2009312648A1 (en) | 2011-06-23 |
AP2011005720A0 (en) | 2011-06-30 |
MY159482A (en) | 2017-01-13 |
AU2009312648B2 (en) | 2015-11-12 |
FR2938001A1 (fr) | 2010-05-07 |
EP2344796A2 (fr) | 2011-07-20 |
FR2938002A1 (fr) | 2010-05-07 |
BRPI0921085A2 (pt) | 2015-12-15 |
EG26777A (en) | 2014-09-02 |
FR2938002B1 (fr) | 2014-02-07 |
CA2742501A1 (fr) | 2010-05-14 |
WO2010052423A3 (fr) | 2011-03-03 |
FR2938001B1 (fr) | 2010-12-31 |
US8882390B2 (en) | 2014-11-11 |
US20120134755A1 (en) | 2012-05-31 |
CA2742501C (fr) | 2017-05-23 |
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