WO2010052422A2 - Procédé de montage d'une tour d'exploitation d'un fluide dans une étendue d'eau et tour d'exploitation associée - Google Patents
Procédé de montage d'une tour d'exploitation d'un fluide dans une étendue d'eau et tour d'exploitation associée Download PDFInfo
- Publication number
- WO2010052422A2 WO2010052422A2 PCT/FR2009/052123 FR2009052123W WO2010052422A2 WO 2010052422 A2 WO2010052422 A2 WO 2010052422A2 FR 2009052123 W FR2009052123 W FR 2009052123W WO 2010052422 A2 WO2010052422 A2 WO 2010052422A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- buoy
- point
- water
- downstream
- flexible
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 title claims description 34
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 46
- 238000004873 anchoring Methods 0.000 claims abstract description 37
- 238000007667 floating Methods 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000007654 immersion Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 claims 2
- 230000003213 activating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 22
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 244000261422 Lysimachia clethroides Species 0.000 description 2
- 210000003323 beak Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/013—Connecting a production flow line to an underwater well head
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:
- 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.
- 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.
- Such a method of installation therefore requires to be able to have a ship with a hoist crane very large capacity and high.
- the subject of the invention is a method of the aforementioned type, characterized in that the buoy has a height, taken along a vertical axis when the intermediate section is energized, less than 1.5 times its maximum transverse dimension. , taken transversely to the vertical axis, the feeding step comprising moving the buoy between a remote position located away from the anchoring region and a positioning position located opposite the anchoring region, keeping the buoy partially immersed on the surface of the body of water.
- 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 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 laying structure in the body of water, and pulling the downstream point towards the buoy, the intermediate section occupying a chain configuration between the floating laying structure and the buoy during the deployment step;
- the buoy comprises a buoyancy chamber and at least one traction unit of the downstream point, the traction unit being carried by the buoyancy chamber at least during the connecting step, the connecting step comprising the activation the traction unit to go upstream downstream on the buoy; 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 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 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 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 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;
- buoy immersed completely beneath the surface of the body of water, the buoy being connected to a downstream point of the intermediate section to maintain the intermediate section situated between the downstream point and the upstream point in a substantially vertical tensioned configuration, characterized in that the buoy has a height, taken along a vertical axis, less than 1.5 times its maximum transverse dimension, taken transversely to the vertical axis.
- the tower 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 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;
- the tower comprises a flexible link connecting the auxiliary connection point located on the upper flexible section to the connection point located on the buoy;
- the buoy comprises at least one stabilizing member adapted to project downwardly from a lower surface of the buoyancy chamber.
- 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; connecting a downstream point of a fluid transport pipe to the buoy;
- 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 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 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; - An anchor element of the transport pipe in the bottom of the body of water, connected to an upstream point of the intermediate 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 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 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 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. - the buoy has a height, taken along a vertical axis, less than
- 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
- - Figure 4 is a view similar to Figure 3 in a second step of the method according to the invention
- - Figure 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.
- - Figure 10 is a view similar to Figure 8 of a fifth operating tower according to the invention;
- FIG. 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 set 22 of surface, intended to recover and store the fluid collected in the production set
- 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 according to the invention comprises a fluid transport pipe 24 connecting the bottom assembly 18 to the 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 of 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 entire surface
- 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 water body 12.
- the lower hose 36 is connected upstream to the bottom assembly 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.
- the term "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. This definition embraces indifferently the flexible conduits of unbound type ("unbounded” in English), or bound ("bounded” in English). More generally, and in a variant, 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 An example of a flexible pipe is described in the French application
- Such a flexible pipe has a minimum radius of curvature in bending without damage ("MBR” or “minimal bending radius” in English) relatively small for example a few meters which makes it particularly suitable for being rolled and unrolled reversibly without significant plastic deformation on a drum or basket, the drum or the basket being carried by a laying ship, as will be seen below .
- 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 riser 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 body of water and a line flexible 62 connecting the anchor 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-lumen 78 of axis AA 'for the passage of the riser 30.
- the light 78 opens up and down on the left and right side. other 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 .
- the 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. Initially, 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 way safe being only partially submerged in the body of water 12, using 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. Then, when the 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.
- an increasing length of the flexible pipe 42 is unwound 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 since the buoy 26 is relatively high, for example greater than 50 m, the radius of curvature of the flexible pipe 42 in this configuration is high to prevent any 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 the surface assembly 22, thereby forming the upper section 34 of the line 24.
- the continuous flow passage 52 of the hydrocarbons between the bottom assembly 18 and the surface assembly 22 is then established successively through the lower section 28, the riser 30, the connector 32 and the upper section 34.
- the fluid collected by the bottom assembly 18 is then transported to the surface assembly 22 through the passage 52.
- the buoy In a variant of the installation method described above, the buoy
- buoy 26 is then provided with a winch 96 suitable for being operated while being immersed under the expanse of water 12.
- a second installation 120 according to the invention is represented on the
- the tower 20 of the second installation 120 comprises a buoy 26 disposed above the downstream point 40 and above the connection 32.
- 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.
- 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 towards the top 136 and a fourth section 138 substantially vertical 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 maintain the flexible upper section 34 in a wave configuration, referred to as "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 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 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. 10 A fifth installation 160 according to the invention is shown in FIG. 10.
- 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 bottom section 162 of 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 vertical rigid hollow tube 182 provided at its ends with abutment flanges 184, 186. It defines internally a channel 188 for the passage of the transport pipe 24.
- the stabilizing member 180 is mounted movable in the buoyancy buoyancy box 70 along a vertical axis AA '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 pipe 24 is disposed through the channel 188 as shown in FIG.
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/127,244 US8734055B2 (en) | 2008-11-05 | 2009-11-03 | Method for assembling an operating rig for a fluid in a body of water and associated operating rig |
AU2009312647A AU2009312647B2 (en) | 2008-11-05 | 2009-11-03 | Method for assembling an operating rig for a fluid in a body of water and associated operating rig |
BRPI0921088A BRPI0921088A2 (pt) | 2008-11-05 | 2009-11-03 | processo de montagem de uma torre de exploração de fluido em uma massa de água e torre de exploração de fluido através de uma massa de água |
CA2742499A CA2742499C (fr) | 2008-11-05 | 2009-11-03 | Procede de montage d'une tour d'exploitation d'un fluide dans une etendue d'eau et tour d'exploitation associee |
AP2011005737A AP3176A (en) | 2008-11-05 | 2009-11-03 | Method for assembling an operating rig for a fluidin a body of water and associated operating rig |
EP09768135.7A EP2342488B1 (fr) | 2008-11-05 | 2009-11-03 | Procédé de montage d'une tour d'exploitation d'un fluide dans une étendue d'eau et tour d'exploitation associée |
EG2011050702A EG26639A (en) | 2008-11-05 | 2011-05-05 | Method for assembling a fluid operating platform into a water body and its operating platform |
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 | ||
FR0952387 | 2009-04-10 | ||
FR0952387 | 2009-04-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010052422A2 true WO2010052422A2 (fr) | 2010-05-14 |
WO2010052422A3 WO2010052422A3 (fr) | 2011-03-03 |
Family
ID=42153336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/052123 WO2010052422A2 (fr) | 2008-11-05 | 2009-11-03 | Procédé de montage d'une tour d'exploitation d'un fluide dans une étendue d'eau et tour d'exploitation associée |
Country Status (9)
Country | Link |
---|---|
US (1) | US8734055B2 (fr) |
EP (1) | EP2342488B1 (fr) |
AP (1) | AP3176A (fr) |
AU (1) | AU2009312647B2 (fr) |
BR (1) | BRPI0921088A2 (fr) |
CA (1) | CA2742499C (fr) |
EG (1) | EG26639A (fr) |
MY (1) | MY158881A (fr) |
WO (1) | WO2010052422A2 (fr) |
Cited By (6)
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---|---|---|---|---|
GB2481787A (en) * | 2010-06-29 | 2012-01-11 | Subsea 7 Ltd | A method and apparatus for installing a buoy to an anchoring location |
US8104450B2 (en) | 2009-04-13 | 2012-01-31 | Gentile Francis X | Backwards injected engine |
WO2012127157A1 (fr) * | 2011-03-23 | 2012-09-27 | Technip France | Methode d'installation assistee d'une colonne sous-marine montante |
US20140186124A1 (en) * | 2011-06-16 | 2014-07-03 | Wellstream International Limited | Riser assembly and method |
US8967912B2 (en) | 2010-06-29 | 2015-03-03 | Subsea 7 Limited | Method of installing a buoy and apparatus for tensioning a buoy to an anchoring location |
EP2899361B1 (fr) * | 2011-04-18 | 2018-08-08 | Magma Global Limited | Système de tuyau sous-marin |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0920640D0 (en) * | 2009-11-25 | 2010-01-13 | Subsea 7 Ltd | Riser configuration |
US9334695B2 (en) * | 2011-04-18 | 2016-05-10 | Magma Global Limited | Hybrid riser system |
FR2981721B1 (fr) * | 2011-10-21 | 2013-11-08 | Technip France | Methode d'installation d'une tour autoportee d'extraction des hydrocarbures |
FR2988424B1 (fr) * | 2012-03-21 | 2014-04-25 | Saipem Sa | Installation de liaisons fond-surface de type tour hybride multi-risers comprenant des conduites flexibles a flottabilite positive |
WO2014043126A2 (fr) * | 2012-09-11 | 2014-03-20 | Oil States Industries, Inc. | Système de colonne montante hydride autoportante comprenant une configuration inférieure à charnière de tuyau flexible et raccord de tuyau sans plongeur |
JP7114716B2 (ja) | 2018-01-03 | 2022-08-08 | ハダル, インコーポレイテッド | ブイおよびブイネットワークの段階的展開 |
GB2571955B (en) * | 2018-03-14 | 2020-09-30 | Subsea 7 Norway As | Offloading hydrocarbons from subsea fields |
GB2583108B (en) * | 2019-04-16 | 2022-02-23 | Subsea 7 Do Brasil Servicos Ltda | Installation of subsea risers |
Citations (1)
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FR2911907A1 (fr) | 2007-01-26 | 2008-08-01 | Technip France Sa | Installation de conduite montante flexible de transport d'hydrocarbures. |
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FR2839110B1 (fr) * | 2002-04-29 | 2004-12-03 | Technip Coflexip | Systeme de colonne montante reliant une installation sous-marine fixe a une unite de surface flottante |
US7059416B2 (en) * | 2003-11-21 | 2006-06-13 | Technip France | Buoyancy can for offshore oil and gas riser |
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FR2876142B1 (fr) * | 2004-10-05 | 2006-11-24 | Technip France Sa | Dispositif de liaison superieure entre deux conduites sous marines de transport de fluide |
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WO2009067532A1 (fr) * | 2007-11-19 | 2009-05-28 | Millheim Keith K | Système de colonne montante autoporteur à multiples chambres de flottaison |
-
2009
- 2009-11-03 AP AP2011005737A patent/AP3176A/xx active
- 2009-11-03 CA CA2742499A patent/CA2742499C/fr not_active Expired - Fee Related
- 2009-11-03 WO PCT/FR2009/052123 patent/WO2010052422A2/fr active Application Filing
- 2009-11-03 EP EP09768135.7A patent/EP2342488B1/fr not_active Not-in-force
- 2009-11-03 AU AU2009312647A patent/AU2009312647B2/en not_active Ceased
- 2009-11-03 US US13/127,244 patent/US8734055B2/en not_active Expired - Fee Related
- 2009-11-03 BR BRPI0921088A patent/BRPI0921088A2/pt not_active IP Right Cessation
- 2009-11-03 MY MYPI2011001958A patent/MY158881A/en unknown
-
2011
- 2011-05-05 EG EG2011050702A patent/EG26639A/en active
Patent Citations (1)
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FR2911907A1 (fr) | 2007-01-26 | 2008-08-01 | Technip France Sa | Installation de conduite montante flexible de transport d'hydrocarbures. |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8104450B2 (en) | 2009-04-13 | 2012-01-31 | Gentile Francis X | Backwards injected engine |
GB2481787A (en) * | 2010-06-29 | 2012-01-11 | Subsea 7 Ltd | A method and apparatus for installing a buoy to an anchoring location |
US8967912B2 (en) | 2010-06-29 | 2015-03-03 | Subsea 7 Limited | Method of installing a buoy and apparatus for tensioning a buoy to an anchoring location |
US9162734B2 (en) | 2010-06-29 | 2015-10-20 | Subsea 7 Limited | Method of installing a buoy and apparatus for tensioning a buoy to an anchoring location |
WO2012127157A1 (fr) * | 2011-03-23 | 2012-09-27 | Technip France | Methode d'installation assistee d'une colonne sous-marine montante |
FR2973064A1 (fr) * | 2011-03-23 | 2012-09-28 | Technip France | Methode d'installation assistee d'une colonne sous-marine montante |
US9217517B2 (en) | 2011-03-23 | 2015-12-22 | Technip France | Method for the assisted installation of an underwater riser |
EP2899361B1 (fr) * | 2011-04-18 | 2018-08-08 | Magma Global Limited | Système de tuyau sous-marin |
US20140186124A1 (en) * | 2011-06-16 | 2014-07-03 | Wellstream International Limited | Riser assembly and method |
Also Published As
Publication number | Publication date |
---|---|
CA2742499C (fr) | 2017-05-23 |
WO2010052422A3 (fr) | 2011-03-03 |
EP2342488B1 (fr) | 2015-01-07 |
CA2742499A1 (fr) | 2010-05-14 |
AP3176A (en) | 2015-03-31 |
AP2011005737A0 (en) | 2011-06-30 |
US20110274501A1 (en) | 2011-11-10 |
AU2009312647B2 (en) | 2016-01-14 |
EG26639A (en) | 2014-04-15 |
AU2009312647A1 (en) | 2010-05-14 |
EP2342488A2 (fr) | 2011-07-13 |
MY158881A (en) | 2016-11-30 |
US8734055B2 (en) | 2014-05-27 |
BRPI0921088A2 (pt) | 2015-12-15 |
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