• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a cover comprising: - an elongated body (40) adapted to be applied facing an outer surface of the pipe (16); at least one longitudinal element (42, 44) interacting with the pipe (16) carried by the elongated body (40). The elongated body (40) is reversibly deformable under its own weight, the elongate body (40) having a length greater than 10 m.
    公开号:FR3036634A1
    申请号:FR1554771
    申请日:2015-05-27
    公开日:2016-12-02
    发明作者:Philippe Espinasse；Thomas Parenteau
    申请人:Technip France SAS；
    IPC主号:
    专利说明:

    [0001] 1 removable cover intended to be arranged opposite a submerged fluid transport pipe in a body of water, associated intervention assembly and method The present invention relates to a removable cover intended to be arranged facing a pipe of submerged fluid transport in a body of water, comprising: - an elongate body, adapted to be applied facing an outer surface of the pipe; at least one longitudinal element of interaction with the pipe carried by the elongate body. The fluid transport pipe is for example disposed at the bottom of a body of water, for transporting a fluid on the bottom of the body of water, before its rise to the surface. The pipe is advantageously a rigid pipe formed of at least one metal tube. Alternatively, the pipe is a flexible pipe. It is for example placed on the bottom of the body of water and / or is buried in the bottom of the body of water at shallow depth. The fluid transported by the pipe is in particular a petroleum fluid containing hydrocarbons, such as oil or natural gas.
    [0002] When this type of fluid circulates at the bottom of a body of water, at great depths, compounds present in the fluid, such as hydrates or paraffins are likely to solidify and form solid accumulations such as restrictions and in some critical cases, corks. Alternatively, the hydrates and paraffins are formed during a production stop due to a maintenance operation or a malfunction. The accumulations of solid thus formed disrupt the circulation of the fluid and the operation of the installation, which can generate significant revenue losses for the operator. The method generally used in industry to lead a pipe closed by hydrates is depressurization. Indeed, the pressure being a hydrate formation conditions, the depressurization of the pipe for a long enough time allows, at least partially, the disappearance of the plugs. The time required for dissociation decreases as depressurization is important. However, too much and too rapid depressurization of the interior of the pipe can cause the pipe to collapse on itself under the effect of external pressure, especially but not exclusively in the case of flexible pipes. Similarly, the column of liquid inside the riser ("riser" in English) imposes a hydrostatic pressure inside the pipe which is difficult to control. Thus it is impossible to depressurize below a certain threshold imposed by this hydrostatic pressure. In practice, depending on the level of depressurization inside the pipe and the depth at which the pipe is located, the time required for the dissociation can easily reach several months. In addition, this method requires the collection of gas or liquid at the surface during the dissociation of the plugs. Therefore, to be carried out this operation requires the intervention of a specialized boat capable of collecting and treating these fluids to ATEX standards, which is rare and very expensive. In some cases, it is also known to introduce into the pipe a mechanical system for dislodging plugs. Operations of this type are tedious and expensive. They generally require a stop of the production. In addition, these operations can be performed only over a relatively short length and typically on the vertical part of the pipe. Also, in critical cases, no conventional means allows to lead the conduct, thus rendering it inoperative.
    [0003] An alternative device for treating plugs in a fluid transport line is described for example in US6939082. In this device, a remotely operated vehicle descended to a point of the pipe with a hydrate cap. A jacket is disposed above the pipe, leaving an intermediate space available. The water present in this intermediate space is heated and circulated to heat the pipe and melt the plug. Such a device does not give complete satisfaction. Its implementation is tedious and requires local sealing in the intermediate space defined above the pipe. The temperature applied to the pipe is difficult to control accurately. Furthermore, the location of the hydrate cap must be known prior to treatment, which requires lengthy and expensive investigations. In addition, this device allows a very localized treatment of the plug (typically 2 m). In the absence of data on the location and length of the cork, operating times can become excessively long. The use of such a device also entails certain risks. Indeed, the creation of plugs causes an irregularity of the pressures along the pipe. Thus, the pressure can be much higher on one side than the other of the plug. The local heater increases these problems of irregularity which can cause the violent expulsion of the plug and the damage of the pipe, or create areas of pressure that can degrade the pipe. In addition, once the zone is treated, if the device is moved to treat a new zone, hydrates may reform in the initial treatment zone during the treatment of the next zone. An object of the invention is to provide a device for monitoring and efficiently treat, in a simple and inexpensive way, accumulations of solid material in a submerged fluid transport pipe in a body of water .
    [0004] To this end, the subject of the invention is a cover of the aforementioned type, characterized in that the elongated body is reversibly deformable under the effect of its own weight, the elongate body having a length greater than 10 m. The cover according to the invention may comprise one or more of the following characteristics, taken alone or in any technically possible combination: the elongate body has a length greater than 100 m, advantageously greater than 1 km. - At least one longitudinal element of interaction with the pipe is a longitudinal sensor for measuring the temperature carried by the elongated body. The longitudinal sensor for measuring the temperature extends over at least 90% of the length of the elongate body, the covering comprises at least one ballast element carried by the elongated body, the elongate body is clean. to be reversibly wound on a rotary storage device - the cover comprises at least one longitudinal reinforcing armor carried by the elongated body - the cover comprises at least one handling element adapted to be grasped by a remotely controlled vehicle under the longitudinal body comprises a thermally insulating material, at least one longitudinal element of interaction with the pipe is a longitudinal heating element advantageously comprising an electrical heating resistor. intervention with respect to a submerged fluid transport pipe under a body of water, comprising: at least one cover such as defined ie above - a unit for activating, controlling and monitoring the or each longitudinal element of interaction with the pipe, connected to the or each cover. The assembly according to the invention may comprise one or more of the following characteristics, taken in isolation or in any technically possible combination: a rotary storage device, the cover being adapted to be rolled up and unrolled in a reversible manner on the rotating storage device. The invention also relates to a method of interaction with a fluid transport pipe disposed in a body of water, comprising the following steps: providing a cover as defined above; placing the cover in the body of water to dispose it facing an outer surface of the fluid transport pipe; activation of the or each longitudinal element of interaction with the pipe, to interact with the pipe, in particular to heat the pipe or to measure a temperature of the pipe. The method according to the invention may comprise one or more of the following characteristics, taken in isolation or in any technically possible combination: the placing step comprises the application of the cover on the outer surface of the pipe; fluid transport, and the spontaneous deformation of the cover to fit the shape of the outer surface of the fluid transport pipe. - The pipe is at least partially buried in the bottom of the body of water, the placing step comprising the application of the cover on a bearing surface 25 located apart from and facing the outer surface the fluid transport pipe, advantageously on the bottom of the body of water, and the spontaneous deformation of the cover to adapt to the shape of the bearing surface. The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a diagrammatic view, taken through a water body, of a fluid exploitation installation, in which a heating assembly according to the invention is implemented; FIG. 2 is a partial view from above of a removable heating cover according to the invention; - Figure 3 is a view taken in section along the transverse plane III of Figure 1; FIG. 4 is a view taken in section along the transverse plane IV of FIG. 1; - Figure 5 is a view taken in section along the transverse plane V of Figure 1; FIG. 6 is a graph illustrating the temperature measured by the longitudinal measurement sensor integrated in the removable cover as a function of the longitudinal position; FIG. 7 is a graph illustrating the temperature measured by the longitudinal measurement sensor integrated in the removable cover facing a given point of the pipe initially comprising a stopper, as a function of time; FIG. 8 is a view similar to FIG. 5, when the cover is off-center with respect to the pipe; and FIG. 9 is a curve comparing the evolutions of temperatures measured by a sensor located at the center of the central body of the cover and by a sensor situated at the periphery. A first intervention assembly 10 according to the invention is illustrated diagrammatically in FIG. 1. The assembly 10 is intended to be used in a fluid exploitation installation 12 in a body of water. water 14 is for example a sea, a lake or an ocean. The depth of the water extent 14 to the right of the fluid operating installation 12 is for example between 10 m and 3000 m or more.
    [0005] The installation 12 comprises at least one pipe 16 placed on the bottom 18 of the body of water 14 and / or partially or completely buried in the bottom 18 of the body of water 14. In this example, the pipe 16 is a production line (referred to as "flowline") connecting a fluid collection assembly (not shown) to a riser. Alternatively, the pipe 16 is a pipe ("pipe" or umbilical) gas injection or alternating injection of gas and water. The pipe 16 is for example a rigid pipe formed of at least one metal pipe or is a flexible pipe comprising at least one pressure sheath made of thermoplastic material and tensile armor.
    [0006] The pipe 16 may or may not comprise a thermally insulating layer, this layer may have a significant thickness, to achieve insulation levels of less than 1 W / m2.K. By way of example, the pipe 16 shown in FIG. 1 comprises a first section 20 projecting from the bottom 18 of the body of water, a second section 22 buried at shallow depth, for example a depth 35 less than outer radius of the pipe 16 and a third section 24 buried at a greater depth, greater than the outer radius of the pipe 16.
    [0007] The pipe 16 defines an internal fluid flow passage 26, visible in FIGS. 3 to 5. The fluid flowing in the pipe is, for example, a hydrocarbon fluid comprising at least one compound capable of solidifying in the internal passage 26 to a temperature of between -40 ° C. and 50 ° C., in particular between -5 ° C. and 25 ° C. The compound capable of solidifying is, for example, a hydrate, a wax, ice, and / or a paraffin gel. and / or asphaltenes. The solidified compound is likely to accumulate on the walls of the pipe, and in some critical cases, form plugs 28 shown schematically in FIG. 1. In the example shown in FIG. intervention 10 is intended to be deployed opposite the pipe 16 to heat the fluid it contains, and cause at least partial melting of the solidified compounds. The intervention assembly 10 is advantageously deployed from a floating surface installation, such as a ship. Any kind of installation vessel may be used, preferably a conventional installation vessel, or possibly a vessel specific to ATEX standards. According to the invention, the intervention assembly 10 comprises a removable cover 32 intended to be placed facing the pipe 16, a unit 34 for activating, controlling and monitoring the heating generated by the cover 32, advantageously carried by the surface installation 30, and a flexible link 36 connecting the unit 34 to the cover 32 through the body of water 14. In this example, the intervention assembly 10 further comprises a device 38 winding the cover 32, carried by the surface installation 30.
    [0008] The removable cover 32 is here intended to interact with the pipe 16 to heat it. It is adapted to be applied in a reversible manner on an outer surface of the pipe 16 when the pipe 16 projects from the bottom 18 of the body of water 12 and / or on a bearing surface formed by the bottom 18 the water extent 12, facing the pipe 16, when the pipe 16 is buried.
    [0009] The removable cover 32 comprises a flexible elongate body 40, and at least one element 42, 44 interacting with the pipe 16 comprising in this example at least one longitudinal heating element 42, and at least one longitudinal sensor 44 for measuring the temperature, the heating element 42 and the longitudinal sensor 44 being carried by the body 40.
    [0010] Advantageously, the removable cover 32 comprises longitudinal internal armor 46, arranged in the body 40, to reinforce its tensile strength. The cover 32 further includes in this example external handling members 48, visible in FIG. 2, suitable for being gripped by an underwater remote control vehicle ("Remotely Operated Vehicle" or "ROV" in English), for adjust the position of the body 40 with respect to the pipe 16.
    [0011] The elongate body 40 is made from a flexible material, reversibly deformable to fit the shape of the surface to which it is applied. Here it has a planar layer shape with a polygonal cross section delimited downwards by a lower surface and upwardly by an opposite upper surface.
    [0012] The elongate body 40 advantageously comprises a ballast element 45 capable of causing the elongated body 40 to deform under the effect of its weight and to allow it to remain in position on the surface to which it is applied. The ballast element 45 is also suitable for ensuring stationary positioning during installation, resisting marine currents during installation.
    [0013] Indeed, the ballast element 45 gives a melting weight necessary for an acceptable hydrodynamic behavior during the installation phase (passage in the water section). In one embodiment, the ballast member 45 is asymmetrically distributed, for example, by much more the front of the elongate body 40 than the back. Thus, during the installation, the blanket 32 dips vertically to the bottom, with its front part relatively immobile in the currents because of the ballast, and with its rear part driven in the currents, like a flag in the wind. This is of great interest for the approach phase of the ground, during which it is important that the point of attachment to the ground be sufficiently ballasted so as not to be framed on the ground under the effect of the current, which would risk damage but also that would make its positioning complex with respect to the pipe 16. The ballast element 45 for example formed by the crimping of a metal rod positioned longitudinally along the elongated body 40, or steel plates , Encapsulated lead, discontinuous in two planes to allow winding and storage on the surface installation 30 and monitoring the terrain profile, as well as the profile of the pipe 16 itself. Alternatively, metal cables, for example steel are used to combine added mass and recovery of installation voltages. The flexibility of the body 40 is further adapted to permit the winding of the removable cover 32 on the winding device 38 and its unwinding from the winding device 38, without significant plastic deformation.
    [0014] The elongate body 40 is for example made from an elastomer material of rubber or polyurethane type. Its thickness can be between 50 mm and 100 mm. The cover may also take the form of a honeycomb structure of the NIDA technology type. The honeycomb structure preferably comprises a layer of adjacent cells interposed between two continuous sheets. The cells of the honeycomb can be filled with airgel and in particular airgel powder. The sheets may be made of elastomeric material such as rubber. Alternatively, the elongated body is made of syntactic foam, for example based on polypropylene with glass microspheres. In this case, and since the material is relatively rigid, the syntactic foam will be in the form of juxtaposed blocks. Pavers, such as cells of honeycombs, preferably have maximum dimensions of less than 30 cm and in particular of the order of 20 cm.
    [0015] Preferably, the elongated body 40 is thermally insulating. It advantageously has a thermal conductivity lower than 0.3 W / m.K, and especially between 0.1 W / m.K and 0.3 W / m.K. It is thus able to direct the heat produced by each heating element 42 to the pipe 16.
    [0016] According to the invention, the length of the elongated body 40 is greater than at least 10 times its width, in particular at least 100 times its width. The length of the elongate body 40 is greater than 10 m, in particular greater than 100 m, advantageously greater than 1 km. The width of the elongate body 40 is less than 5 m, and is especially less than 2 m. According to an advantageous characteristic of the invention, the width of the elongate body 40 is greater than the diameter of the pipe 16, preferably at least twice the diameter of the pipe 16, so as to facilitate the installation of the cover 32, without have to center said cover 32 on the pipe 16. When the pipe is arranged above the seabed, the width of the elongate body 40 is advantageously greater than the perimeter of the pipe and preferably greater than 2 times the perimeter. Indeed, when operating by several kilometers of bottom, it becomes tedious to perfectly adjust the middle portion of the cover 32 with respect to the axis of the pipe 16. Thus, a greater width allows to keep the full efficiency while the cover 32 is slightly offset from the axis of the pipe 16.
    [0017] When the length of the elongate body 40 is much greater than its width, the cover 32 is thus able to heat the pipe 16 over a great length, in particular to eliminate accumulations of solidified compounds, without necessarily having to precisely locate the longitudinal position. of these compounds before the intervention. As indicated above, the elongated body 40 is able to deform spontaneously to adapt to the surface on which it is applied. In the example shown in FIG. 4, the body 40 thus has a gutter shape covering the pipe 16 and delimiting a hollow for receiving the pipe 16.
    [0018] In the example shown in FIGS. 4 and 5, the body 40 has a respectively concave and substantially flat shape, corresponding to the configuration of the bottom 18 of the body of water 14, to the line 16. As illustrated in Figures 3 to 5, the removable cover 32 has a plurality of longitudinal heating elements 42 laterally spaced apart from each other. In this example, the removable cover 32 has four parallel heating elements 42. Each heating element 42 advantageously extends over more than 90% of the length of the body 40. An excess length is provided in particular when the cover 32 is intended to be wound and when the heating elements 42 are not 20 This excess length is a function of the distance to the neutral winding axis.This excess length makes it possible to avoid compressive and tensile overpressures appearing between wound and unrolled position In one embodiment, the heating elements 42 extend parallel to the local axis AA 'of the body 40. In a variant, they extend generally parallel, the heating elements 42 having zigzag local curvatures In other embodiments, at least one heating element 42 passes through the body 40 by making zigzags of the width of the body 40. In another variant, at least one heating element 42 is a heating screen r uniformly distributed on the surface of the body 40. Each heating element 42 is here partially embedded in the body 40, with at least one generatrix flush with a lower surface of the body 40. In alternative embodiments, the heating elements 42 are fixed protruding under the body 40. Not to be in direct contact with the ground, which could degrade the heating elements 42, the body 40 has rigid extra thicknesses on both sides of the heating elements 42, for apply on the floor.
    [0019] Advantageously, each heating element 42 is formed by an electric resistance capable of producing heat by the Joule effect, when it is electrically powered by the unit 34, via the link 36. In the case of the heating blanket 32 the heating elements 42 may be in direct contact with the water and the ambient pressure. Thus, they advantageously comprise a means of protection against corrosion and compression, or are made of materials resistant to these constraints. The linear power delivered by the heating elements 42 is in particular greater than 50 W / m, in particular between 100 W / m and 300 W / m.
    [0020] The or each temperature measuring sensor 44 is for example formed by a linear optical fiber sensor of the Distributed Temperature Sensing ("DIS") type, Bragg fiber sensor, or grid sensor. fine. The temperature measuring sensor 44 advantageously extends over more than 90% (3/0 of the length of the body 40, parallel to the local axis AA 'of the body 40. It is flush with a lower surface of the body 40 to be It is advantageously placed along the central axis AA 'of the body 40, transversely spaced from each heating element 42, preferably between two heating elements 42 The sensor 44 is adapted to produce a signal representative of the local temperature of the inner surface of the body 40 with a resolution, for example of the order of 1 m, along the body 40. The representative signal is collected by the unit 34 for monitoring the local temperature of the body 40 during heating operations, a plurality of sensors 44 or sensor portions 44 may be arranged in the width of the body 40 to determine, by studying the temperatures, the centering of the body 40 of the cover 32 on the pipe 16. This is illustrated by FIG. 8 and by FIG. 9 which shows that the sensor 44A 30 situated at the periphery of the body 40 has at each instant a temperature TA greater than the temperature TB of the sensor 44B located at the center of the body 40. The position of the body 40 can advantageously be corrected a posteriori by a remotely controlled underwater vehicle. When the sensor 44 is formed of an optical fiber, the body 40 can receive several longitudinal optical fibers, or a single optical fiber that goes back and forth along the body 40.
    [0021] In practice, the unit 34 comprises a unit of analysis ("monitoring unit" in English) for each optical fiber and the link 36 comprises a dedicated umbilical channel by optical fiber. Thus, the use of a single optical fiber going back and forth requires only one unit of analysis and one umbilical channel, which reduces the cost. Conversely, several analysis units allow better discretization on long lengths. The armor elements 46 extend longitudinally in the body 40. They are for example formed by metal son and / or composite. Each armor element 46 is embedded in the body 40, being disposed away from the heating elements 42. The presence of the armor elements 46 stiffens the body 40 along the axis A-A ', while maintaining its deformability in other directions. The handling members 48 protrude from an upper surface of the body 40. They are adapted to be grasped by a tool of a remotely controlled submarine vehicle to adjust the local position of the body 40. The handling elements 48 are for example handles, ropes, etc. They are distributed longitudinally along the body 40. The actuating, control and monitoring unit 34 is connected to the removable cover 32 to activate the heating elements 42 and control their heating and to follow the temperature measurement carried out by the sensor 44. The unit 34 is thus able to monitor the local temperature of the body 40 along the pipe 16, and to control this temperature on the basis of the measurements made by the sensor 44. The link 36 is for example formed by a hose such as an umbilical. It comprises at least one electrical supply line for each heating element 42, and an information transfer line connected to the temperature measuring sensor 44. The winding device 38 comprises a drum or a mounted basket rotating on the surface installation 30 about a BB 'winding axis. It is adapted to allow the winding of the body 40 with a minimum radius of curvature greater than 2 m and for example between 2 m and 4 m.
    [0022] A first method according to the invention of intervention with respect to an underwater pipe 16 will now be described. Initially, the removable cover 32 is loaded on the winding device 38 of the surface installation 30, being wound around the axis BB 'of the device 38. The surface installation 30 is then brought to the vicinity of the driving 16.
    [0023] A free end of the removable cover 32 is unwound and is immersed in the body of water, for example by means of a remotely controlled vehicle, to be placed on the conduit 3036634 when it is accessible. , or on a point located vertically opposite line 16, when it is buried. The removable cover 32 is then unrolled progressively and placed longitudinally along the line of the pipe 16.
    [0024] As previously indicated, the cover 32 dips to the bottom substantially vertically, with at least its relatively immobile front portion in the currents due to the weight element 45. The overall weight of the cover 32 gives it stability and stability. resistance to marine currents during its vertical descent. The great flexibility of the body 40 allows the cover 32 to follow precisely the course of the pipe 16. The body 40 being deformable under the effect of its own weight, it matches the shape of the surface on which it is placed, this surface may be the pipe 16 itself in the section 20 visible in Figure 3, or the bottom 18 of the body of water 14 when the pipe is buried shallow, as in Figure 4 for the section 22, or at a greater depth, as in Figure 5 for section 24. The long length of the body 40 of the cover 32 does not require a precise location where any accumulations of solid or plugs 28 in the pipe are located. 16, since the pipe 16 is treated globally over the entire length of the cover 32.
    [0025] A link 36 is further provided through the water extent 18 between a point of the cover 32 and the unit 34 located on the surface installation 30. The link 36 electrically connects the unit 34 to each heating element 42. It also connects the unit 34 with the sensor 44 for measuring the temperature. In the case where several sensors 44 are present, the link 36 preferably comprises several channels and thus connects several sensors 44 to one or more central units. Then, the unit 34 activates each heating element 42. The body 40 being made at least partially of insulating material, the heat produced by each heating element 42 is directed mainly through the lower surface of the body 40, towards the 30 16, by direct contact with the pipe 16, or by heat transmission through the bottom 18 of the body of water 14. The heat produced by the heating elements 42 heats the contents of the pipe 16 in the internal passage 26 allowing the at least partial dissolution of the solid compounds formed in the passage 26, and the release of the plugs 28, if any, over the entire length of the body 40.
    [0026] During heating, the unit 34 follows the evolution of the local temperature of the body 40 along the pipe 16. As illustrated by FIG. 6, the zones 60 locally having a lower temperature are generally associated with an accumulation. solid in line 16, and sometimes to plugs 28.
    [0027] The unit 34 also follows the local evolution of the body temperature 40 as a function of time, for each solid accumulation zone 60, to determine a stabilization of this temperature 62 representative of the disappearance of the accumulation of solid, as illustrated in Figure 7, which compares the evolution 62 in the presence of a plug to the evolution 63 in the absence of plug, for a substantially liquid flow. Once the sections 20 to 24 of the pipe 16 treated, the cover 32 can be moved to other sections of the pipe 16, for example by pulling it with at least one remote-controlled submarine vehicle, or by raising it on the surface installation 30 and by winding it on the device 38.
    [0028] The cover 32 according to the invention is therefore particularly simple to put in place and to move in the body of water 14. The flexibility of its body 40, possibly associated with the presence of weight elements 45, appreciably conformation of the body 40 to the configuration of the pipe 16 that is accessible or buried.
    [0029] At a minimum, the entry and exit of water by natural convection or current is avoided during heating. An enclosure "hermetic" to the flow of water is advantageously created, with possibly one or more pockets of water enclosed in it. The heating efficiency is naturally better in the absence of a water pocket.
    [0030] The long length of the body 40 of the cover 32 ensures an overall treatment of a great length of the pipe 16, without it being necessary to precisely detect where are the possible accumulations of solid compounds, and in particular the plugs 28. Effective thermal insulation is provided by the body 40 to direct the heat produced by the heating elements 42 to the pipe 16, minimizing losses. The cover 32 thus makes it possible to deal very effectively and quickly with any accumulations of solid in the pipe 16, without necessarily requiring interruption of production. The presence of a longitudinal sensor for measuring the temperature 44 makes it possible to locate any accumulations of solid, and to verify their disappearance.
    [0031] In addition, the cover 32, optionally provided with internal reinforcing elements 46 to ensure its longitudinal rigidity, is rollable on a winding device 38, facilitating its storage and handling on a surface installation 30. In a Alternatively, several covers 32 as described above are mounted in series with each other to form a heater assembly 10 of greater length. In another variant, the heating elements 42 are not necessarily electrical resistances, but are formed by circulation ducts of a hot heat transfer fluid.
    [0032] Alternatively, the cover 32 is devoid of heating elements 42 or has inactive heating elements 42. It comprises only one or more interaction elements with the pipe 16 formed by temperature measurement sensors 44, for passive monitoring of the pipe 16 during production, without heating.
    [0033] In another variant, the cover 32 is permanently installed on lines in place which require insulation or active heating following an evolution of the production profile. In this case, control and power injection are performed from a production platform. 20
    权利要求:
    Claims (15)
    [0001]
    CLAIMS1.- Cover (32) removable intended to be applied facing a conduit (16) for transporting fluid immersed in a body of water (14), comprising: - an elongated body (40), suitable for s' applying facing an outer surface of the pipe (16); at least one longitudinal element (42, 44) interacting with the pipe (16) carried by the elongated body (40); characterized in that the elongate body (40) is reversibly deformable under its own weight, the elongate body (40) having a length greater than 10m.
    [0002]
    2. - Cover (32) according to claim 1, wherein the elongate body (40) has a length greater than 100 m, preferably greater than 1 km.
    [0003]
    3. Cover (32) according to any one of claims 1 or 2, wherein at least one longitudinal element of interaction with the pipe is a longitudinal sensor (44) for measuring the temperature carried by the elongate body (40). ).
    [0004]
    4. The cover (32) of claim 3, wherein the longitudinal temperature measuring sensor (44) extends over at least 90 (3/0 of the length of the elongate body (40).
    [0005]
    5. - Cover (32) according to any one of the preceding claims, comprising at least one ballast element (45) carried by the elongate body (40).
    [0006]
    A cover (32) according to any one of the preceding claims, wherein the elongate body (40) is adapted to be reversibly wound on a rotating storage device (38).
    [0007]
    7. - Cover (32) according to any one of the preceding claims, comprising at least one longitudinal armor (46) of reinforcement carried by the elongate body (40).
    [0008]
    8. - Blanket (32) according to any one of the preceding claims, comprising at least one handling element (48) adapted to be gripped by a remote-controlled vehicle underwater.
    [0009]
    The blanket (32) of any one of the preceding claims, wherein the elongated body (40) comprises a thermally insulating material.
    [0010]
    10. - Cover (32) according to any one of the preceding claims, wherein at least one longitudinal element of interaction with the pipe (16) is a longitudinal heating element (42) advantageously comprising an electrical heating resistor. 3036634 16
    [0011]
    11. - Assembly (10) of intervention opposite a conduit (16) for transporting fluid immersed under a body of water (14), comprising: - at least one cover (32) according to any one of preceding claims; 5 - a unit (34) for activating, controlling and monitoring the or each longitudinal element (42, 44) interacting with the pipe, connected to the or each cover (32).
    [0012]
    An assembly according to claim 11, including a rotatable storage device (38), the cover (32) being adapted to be rolled up and reversibly unwound on the rotatable storage device (38).
    [0013]
    13. - A method of interaction with a conduit (16) for transporting fluid disposed in a body of water (14), comprising the following steps: - providing a cover (32) according to any one of claims 1 at 10; Placing the cover (32) in the body of water (14) to arrange it facing an outer surface of the fluid transport line (16); - Activation of the or each longitudinal element (42) of interaction with the pipe, to interact with the pipe (16), in particular for heating the pipe or for measuring a pipe temperature. 20
    [0014]
    The method of claim 13, wherein the placing step includes applying the cover (32) to the outer surface of the fluid transport line (16), and the spontaneous deformation of the cover (32). ) to fit the shape of the outer surface of the fluid transport line (16).
    [0015]
    The method of claim 13, wherein the conduit (16) is at least partially buried in the bottom of the body of water (14), the placement step including the application of the blanket (32). ) on a bearing surface located away from and facing the outer surface of the fluid transport pipe (16), preferably on the bottom of the water body (14), and the spontaneous deformation of the cover (32) to fit the shape of the bearing surface. 30
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    WO2020260802A1|2020-12-30|Underwater heated pipe for the transport of fluids and method for assembling such a pipe
    FR2788100A1|2000-07-07|Thermal insulation device for a deep water seabed pipe reduces heat loss whilst allowing gas to permeate as necessary
    FR2788831A1|2000-07-28|Thermal insulation device for a deep water seabed pipe reduces heat loss whilst allowing gas to permeate as necessary
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    同族专利:
    公开号 | 公开日
    EP3303895A1|2018-04-11|
    FR3036634B1|2017-07-07|
    WO2016188640A1|2016-12-01|
    BR112017025217B1|2021-07-06|
    US10533683B2|2020-01-14|
    US20180202579A1|2018-07-19|
    BR112017025217A2|2018-08-07|
    AU2016266510B2|2021-04-22|
    AU2016266510A1|2017-12-14|
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    FR3075919B1|2017-12-22|2020-01-10|Technip France|METHOD FOR DETECTING THE PRESENCE OF GAS HYDRATE IN A PIPE FOR THE TRANSPORT OF HYDROCARBON FLUID|
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    法律状态:
    2016-05-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-02| PLSC| Publication of the preliminary search report|Effective date: 20161202 |
    2017-05-23| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-29| PLFP| Fee payment|Year of fee payment: 4 |
    2019-05-23| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-25| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-31| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554771A|FR3036634B1|2015-05-27|2015-05-27|REMOVABLE COVER FOR RELEASE OF A SUBSTANTIAL FLUID TRANSPORT CONDUIT IN A WATER EXTEND, INTERVENTION ASSEMBLY AND METHOD THEREOF|FR1554771A| FR3036634B1|2015-05-27|2015-05-27|REMOVABLE COVER FOR RELEASE OF A SUBSTANTIAL FLUID TRANSPORT CONDUIT IN A WATER EXTEND, INTERVENTION ASSEMBLY AND METHOD THEREOF|
    US15/577,108| US10533683B2|2015-05-27|2016-02-01|Removable cover intended for being arranged opposite a fluid-transport pipe submerged in a body of water, associated intervention assembly and method|
    BR112017025217-1A| BR112017025217B1|2015-05-27|2016-02-01|REMOVABLE COVER, OPERATION SET AND INTERACTION METHOD TO INTERACT WITH A FLUID TRANSPORT TUBE|
    EP16703460.2A| EP3303895A1|2015-05-27|2016-02-01|Removable cover intended for being arranged opposite a fluid-transport pipe submerged in a body of water, associated intervention assembly and method|
    PCT/EP2016/052057| WO2016188640A1|2015-05-27|2016-02-01|Removable cover intended for being arranged opposite a fluid-transport pipe submerged in a body of water, associated intervention assembly and method|
    AU2016266510A| AU2016266510B2|2015-05-27|2016-02-01|Removable cover intended for being arranged opposite a fluid-transport pipe submerged in a body of water, associated intervention assembly and method|
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