EP3740449B1 - Vorrichtung und verfahren zur installation und handhabung eines moduls einer submarinen behandlungsstation - Google Patents

Vorrichtung und verfahren zur installation und handhabung eines moduls einer submarinen behandlungsstation Download PDF

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Publication number
EP3740449B1
EP3740449B1 EP19703405.1A EP19703405A EP3740449B1 EP 3740449 B1 EP3740449 B1 EP 3740449B1 EP 19703405 A EP19703405 A EP 19703405A EP 3740449 B1 EP3740449 B1 EP 3740449B1
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European Patent Office
Prior art keywords
module
hydraulic
piston
controlled
lowering
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EP19703405.1A
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English (en)
French (fr)
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EP3740449A1 (de
Inventor
Raymond Hallot
Fabrice BACATI
Thomas DELAPLACE
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Saipem SA
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Saipem SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/663—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/101—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means for containers
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/36—Arrangement of ship-based loading or unloading equipment for floating cargo

Definitions

  • the present invention relates to the general field of underwater processing of fluids occurring during the production of hydrocarbons, for example oil and gas, or the exploitation of mining resources at great depths from underwater production wells. .
  • subsea processing In the context of hydrocarbon production, it is generally necessary to treat production effluents and/or injection fluids (such as, for example, seawater). For this purpose, it is known to use underwater processing stations, called “subsea processing", in which the fluids are treated in equipment placed directly on the seabed instead of being located on the platforms of production as is usually the case. These subsea treatment stations have many economic advantages, notably in that they avoid having to transport fluids to the surface. More generally, these subsea processing stations can help unlock the exploitation of new fields that were previously difficult to exploit.
  • the architecture of the treatment station typically consists of a structural base on which the different modules are placed and connected.
  • the assembly formed by the base and the modules constitutes the complete treatment station. It is also necessary to connect the modules to each other and/or to the structural base if the fluids to be treated pass through them between the different modules (the structural base of the station is then called "flowbase”), these connections being made by means of vertical or horizontal connectors.
  • shock absorbers Another known solution for cushioning the impact of the modules of a station when they land on the base of the station consists of placing shock absorbers under the module during its landing, these shock absorbers being in the form of hydraulic cylinders powered by the surrounding sea water.
  • the feet of these shock absorbers (which are formed by the rod of the cylinders) return to their chamber by chasing the sea water outwards.
  • seawater passes through specific sized orifices and the landing energy of the module is dissipated via the pressure loss of the water leaving the chamber as the actuator rods sink.
  • WO2011/099867 discloses a device comprising the features of the preamble of claim 1.
  • the main aim of the present invention is therefore to propose a device for the installation and maintenance of a module of an underwater processing station which does not present the aforementioned drawbacks.
  • the hydraulic system of the device comprises hydraulic cylinders fixed to the frame and the piston of which is brought into contact or connected with the feet and having two functions: a function of damping impacts during the landing of the module on the base of the station during which the piston moves between its extended position (first mechanical stop) and its intermediate position (hydraulic stop), and a controlled descent function in which the piston can move between its intermediate position and its retracted position ( second mechanical stop).
  • a controlled descent function in which the piston can move between its intermediate position and its retracted position
  • the device according to the invention is thus remarkable in particular in that it provides a decoupling between the damping stroke and the controlled descent stroke of the pistons of the hydraulic cylinders unlike the shock absorber devices of the prior art in which these two phases are implemented at the same time.
  • the damping during landing of the module is carried out without risk of contact between the faces of the vertical connectors, whatever the number of impacts.
  • the descent into the final position of the module is carried out independently of the movements of the installation and maintenance boat and can therefore be perfectly controlled.
  • the device according to the invention thus makes it possible to minimize the risks linked to the installation of modules equipped with vertical connectors.
  • the use of multi-stage hydraulic cylinders makes it possible to implement these functions in a compact and lightest manner possible.
  • the device according to the invention can make it possible to reassemble the module to carry out maintenance operations on the connectors (changing joints for example) without using the winch of the maintenance boat.
  • the device according to the invention can be recovered from the surface after the installation of a module, which allows its maintenance to be carried out for the next operation.
  • each hydraulic cylinder may have, at one end located inside the body of the cylinder, an opening communicating with the first chamber and a collar coming into sealed contact with an internal wall of the cylinder body.
  • each hydraulic cylinder can be provided with a finger projecting inside the first chamber, the finger having an external diameter corresponding substantially to the internal diameter of the piston so as to cooperate with the opening of the piston to form the hydraulic stop corresponding to the intermediate position of the piston.
  • the finger advantageously comprises a conduit for evacuating the hydraulic circuit of controlled descent which opens inside the piston when the latter is in the intermediate position so as to allow the piston to be moved between the intermediate position and the retracted position.
  • each hydraulic cylinder may comprise surfaces against which the flange of the piston is able to come into contact to form the first and the second mechanical stop.
  • Each hydraulic cylinder may further include a guide rod connecting the finger to the piston and a spring mounted around the guide rod to assist in deployment of the piston.
  • each hydraulic cylinder can be supplied with hydraulic fluid by a hydraulic rise circuit.
  • the hydraulic circuit for raising each hydraulic cylinder may include grooves made in an external wall of the piston which open outside the device and open into the second chamber.
  • the damping and controlled descent circuits each comprise a valve which is able to be controlled by an underwater vehicle remotely controlled from the surface, and a non-return valve in parallel with the valve to allow the increase of the incoming fluid flow during cylinder deployment.
  • the damping and controlled descent circuits each comprise at least one pressure limiting valve downstream of the hydraulic cylinders.
  • the damping and controlled descent circuits can be supplied with sea water.
  • the method further comprises, during a lifting phase of the module, a step of pumping the fluid to inject it into the damping and controlled descent circuits to deploy the respective pistons of the hydraulic cylinders of the device.
  • the method further comprises, during a surface recovery phase of the device after installation of the module on the base of the underwater treatment station, closing the controlled descent circuit and opening mechanical connections between the device and the module in order to raise the device to the surface using a winch an installation and maintenance boat.
  • the invention applies to the maintenance of modules making up an underwater processing station used in the context of the production of hydrocarbons or the exploitation of mining resources at great depths for the treatment of production effluents and/or injection fluids (such as seawater).
  • FIG. 1 represents a device 2 according to a (non-limiting) embodiment of the invention which is used to carry out such maintenance.
  • the device 2 comprises a frame 4 which is intended to be fixed (temporarily or permanently) on the upper face of a module 6 of the underwater processing station.
  • the frame 4 of the device comprises a structure 8, for example of rectangular shape, on which are mounted devices for fixing to the module and on which are also mounted fasteners 10 to allow the slings 12 attached to the end to be fixed. a cable moved by a winch from the maintenance boat.
  • the module 6 of the underwater processing station comprises feet 14 (four in number) which slide in sheaths (here integrated into the module but which can alternatively be integrated into the frame of the device) and which are intended to come into contact with the base of the underwater processing station (called “flowbase” in English) during the landing of the module.
  • the vertical forces exerted on the feet 14 by the base of the station during landing of the module are transmitted to the pistons of the cylinders.
  • the frame 4 of the device also includes a hydraulic system 16 which is intended to ensure damping and controlled descent of the module onto the base of the station.
  • This hydraulic system 16 comprises a plurality of hydraulic cylinders 18 which are each intended to be connected to one of the feet 14 of the module.
  • the hydraulic system comprises four hydraulic cylinders 18 positioned at the four corners of the structure 8 of the frame, these cylinders being in contact with the feet 14 which slide through the sheaths along the module.
  • FIG. 2 represents an example of architecture of the hydraulic system 16 equipping the device according to the invention.
  • this hydraulic system 16 comprises four hydraulic cylinders 18. These hydraulic cylinders are double-stage cylinders which are supplied with fluid (typically sea water) by two independent hydraulic circuits, namely the same circuit. damping 22 (for all the cylinders) and the same controlled descent circuit 24 (for all the cylinders).
  • the damping circuit 22 comprises, downstream of each hydraulic cylinder (in the direction of flow of the fluid towards a common exhaust 26), a pressure limiting valve 28.
  • These valves have the particular function of limiting the pressure in the chambers of the hydraulic cylinders by releasing only the necessary fluid flow. This makes it possible to obtain a damping force on the cylinders (directly linked to the pressure in the chambers of the cylinders) which is constant at the start of the damping phase and thus to avoid any too sudden deceleration at the start. Of course, this function could be obtained thanks to the same pressure limiting valve common to all the hydraulic cylinders of the damping circuit.
  • the damping circuit 22 also comprises, downstream of the pressure limiting valves 28, a valve 30 which is common to all of the hydraulic cylinders and which is capable of being controlled by a remote-controlled underwater vehicle (or ROV for “Remote Operated Vehicle”, not shown in the figures) from the surface.
  • a remote-controlled underwater vehicle or ROV for “Remote Operated Vehicle”, not shown in the figures
  • the damping circuit 22 Downstream of the valve 30, the damping circuit 22 further comprises a restriction orifice 32 which makes it possible to define the profile of the damping phase of the device. More precisely, this restriction orifice 32 is calibrated to control the desired damping and therefore the final impact speed.
  • a non-return valve 34 is also added in the damping circuit in parallel with the valve 30 and the restriction orifice 32 to make it possible to increase the flow of fluid entering the chambers during the deployment of the cylinders (phase of rearming the device).
  • damping circuit 22 Downstream, the damping circuit 22 ends with an exhaust 26 which is common with the controlled descent circuit 24.
  • a filter 36 can be added upstream of the common exhaust 26 in order to prevent the introduction of solid particles or organisms into the hydraulic circuits.
  • the controlled descent circuit 24 comprises, downstream of the four hydraulic cylinders, a pressure limiting valve 38. This valve is common for all of the hydraulic cylinders and makes it possible to increase the safety of the device in the event of an accidental rise in pressure. in the controlled descent circuit.
  • the controlled descent circuit 24 also comprises, downstream of the pressure limiting valve 38, a valve 40 which is common to all of the hydraulic cylinders and which is capable of being controlled by the remotely controlled underwater vehicle from the surface .
  • the control of this valve 40 will be detailed later.
  • the controlled descent circuit Downstream of the valve 40, the controlled descent circuit further comprises a restriction orifice 42 which makes it possible to control the exhaust flow of the controlled descent circuit and therefore the descent speed of the module during the descent phase of the device.
  • a non-return valve 44 is also added in the controlled descent circuit in parallel with the valve 40 and the restriction orifice 42 to allow the return flow of the fluid to be increased and to assist in the exit of the cylinders in reducing hydraulic pressure losses.
  • Each hydraulic cylinder 18 of the hydraulic system 16 of the device according to the invention is a double-stage cylinder. It comprises in particular a cylinder body 46 which is secured (temporarily or permanently) to the frame of the device, and a piston 48 whose free end 50 is intended to be brought into contact (by being connected or by simple support) with one of the feet of the module.
  • the piston 48 is movable inside the cylinder body 46 and separates the internal volume of the cylinder body into a first chamber 52 and a second chamber (see the Figures 4B to 4D ) which are waterproof relative to each other.
  • the piston 48 At its end located inside the body of the cylinder (opposite to its free end 50), the piston 48 has an opening 56 which communicates with the descent chamber 52, as well as a collar 58 which comes into sealed contact with an internal wall of the cylinder body during movement of the piston inside it.
  • the collar 58 is able to come into mechanical abutment against surfaces provided in the body of the cylinder.
  • the cylinder body comprises a lower surface 60 against which the flange 58 of the piston comes into contact to form a first mechanical stop corresponding to an deployed position of the piston (case of figures 3 And 4A ).
  • the cylinder body comprises an upper surface 62 against which the flange 58 of the piston comes into contact to form a second mechanical stop corresponding to a retracted position of the piston (case of the figure 4D ).
  • the cylinder body 46 of the hydraulic cylinder is here substantially cylindrical and it is provided with a cylindrical finger 64 projecting inside the first chamber 52.
  • This finger is centered on an axis of revolution at an intermediate position of the piston located between the deployed position and the retracted position.
  • each hydraulic cylinder 18 of the hydraulic system of the device according to the invention is supplied with fluid by the damping circuit 22 and the controlled descent circuit 24.
  • the body of the cylinder 46 has, at the level of its upper surface 62, one or more evacuation conduits 66 opening into the descent chamber 52 and opening towards the damping circuit 22 described above.
  • the damping circuit makes it possible to move the piston of the cylinder between the first mechanical stop and the hydraulic stop.
  • the cylinder body comprises an evacuation conduit 68 opening into the first chamber 52 and opening towards the controlled descent circuit 24.
  • the descent circuit controlled allows the piston to be moved between the hydraulic stop and the second mechanical stop.
  • the device according to the invention is mounted on the module and connected to the installation and maintenance boat on the surface via the cable of a winch.
  • the winch unwinds the cable to lower the module towards the base of the underwater processing station.
  • valve 30 of the damping circuit 22 is open and the valve 40 of the controlled descent circuit is closed on the surface on board the installation and maintenance boat in order to cushion the impacts of the module on the base of the station, in particular due to the swell which can generate several.
  • the second chamber 54 is filled with sea water, for example by passing through grooves 70 made in an external wall of the piston which open to the outside of the device and which open into the second bedroom (see Figure 5 ).
  • the end of the damping phase is defined by the moment when the finger 64 of the body of the cylinder blocks the opening 56 of the piston ( figure 4C ). From this position of the piston, the water present inside the piston (in the secondary chamber 72 created during the passage of the Figure 4B to 4C by the movement of the piston and shown on the figure 4C ), can no longer escape, which stops the retraction of the piston (it is thus at a hydraulic stop in its intermediate position).
  • the pressure in the damping circuit drops below the value defined by the pressure limiting valves 28.
  • the pressure in the cylinders and the hydraulic circuit is limited by the valves 28 which thus also limit the maximum deceleration seen by the module. When the module has slowed down sufficiently, the pressure in the cylinders falls and the valves 28 close, the end of the damping and the associated deceleration decrease from the valve pressure plate to fall to zero when the module has reached constant speed desired, this before the hydraulic stop.
  • the finger 64 can present at its free end a chamfer 64a in order to smooth the stopping of the piston in the intermediate position. It will also be noted that the dimensioning of the restriction orifice 32 of the damping circuit makes it possible to control the desired damping during this phase and to control the final impact speed of the piston before it stops in the intermediate position.
  • the module takes off again.
  • the hydraulic system of the device i.e. the pistons redeploy
  • the guide rod 76 can be formed of two pierced and hollow rods sliding one inside the other, namely a rod 76a fixed to the finger 64 and another rod 76b fixed to the piston 48 .
  • non-return valve 34 of the damping circuit makes it possible to increase the return flow of water in the circuit and therefore also to help in the redeployment of the pistons by reducing hydraulic pressure losses.
  • the installation and maintenance boat's winch cable is slackened and the module is no longer tied to the boat movements. It is then in intermediate position, the cylinders being at hydraulic stop.
  • the remote-controlled underwater vehicle then connects to the hydraulic system of the device to open the valve 40 of the controlled descent circuit by keeping the valve 30 of the damping circuit 22 open ( figure 4D ). This action makes it possible to release the water contained in the secondary chamber 72 in order to control the final descent of the module.
  • the water present in the secondary chamber 72 is expelled towards the controlled descent circuit by taking the evacuation conduit 68 made in the finger 64, while the water present in the first chamber 52 continues to be driven towards the damping circuit via the evacuation conduits 66.
  • the restriction orifice 42 of the controlled descent circuit makes it possible to control the exhaust flow and therefore the descent speed of the module.
  • the final height position of the module is determined by the stops of the connectors and the module itself.
  • the total length of the cylinder can therefore be designed so that the second mechanical stop defined by the upper bearing 62 “arrives” after the stop of the connectors during the descent of the module into the final position.
  • the remotely controlled underwater vehicle can close the connectors between the module and the base of the device. He then carries out tests to verify the tightness of the connectors. In the event of poor sealing, he can intervene directly on these connectors to change the seals for example.
  • the pumped water passing through the check valves of the two circuits, and as the valves 30, 40 are closed the module remains in the high position even when the remotely controlled underwater vehicle stops pumping the water. In this way, a remote-controlled underwater vehicle makes it possible to maneuver the module and change the connector joints.
  • the remotely operated underwater vehicle returns to open the valves of the hydraulic circuits and the module goes back down to the low position.
  • the device can be recovered.
  • the valve 40 of the controlled descent circuit is closed, then the mechanical connections between the device and the module are opened (these may be hydraulic cylinders which release the lifting lugs for example, actuated by the ROV) .
  • the device is therefore no longer connected to the module.
  • the installation and maintenance boat can then rewind the cable of its winch and the device can be recovered on the surface while the module remains in place on the base of the station.
  • the method may further comprise a phase of recovery of the module on the surface with the device recovered on the surface.
  • This recovery phase includes the successive stages of lowering the device underwater from the surface by the installation and handling boat, to the module, mechanical fixing of the device to the module, closing of the valve of the circuit controlled descent, pumping the fluid to inject it into the damping circuits and controlled descent to deploy the respective pistons of the hydraulic cylinders of the device and reassemble the module in the intermediate position, on the hydraulic stop, and recovery of the module and of the device using the winch of the installation and maintenance boat.

Claims (15)

  1. Vorrichtung (2) zur Installation und Wartung eines Moduls einer submarinen Behandlungsstation, die einen Rahmen (4), der dazu bestimmt ist, an einem Modul (6) befestigt zu sein, und ein Hydrauliksystem (16) umfasst, das dazu bestimmt ist, eine Dämpfung und eine kontrollierte Absenkung des Moduls auf die Basis der Station zu gewährleisten, wobei das Hydrauliksystem mehrere Hydraulikzylinder (18) umfasst, die dazu bestimmt sind, jeweils mit einem Fuß verbunden zu sein, der geeignet ist, mit einer Basis der submarinen Behandlungsstation in Kontakt zu kommen,
    dadurch gekennzeichnet, dass jeder Hydraulikzylinder umfasst:
    einen Zylinderkörper (46), der fest mit dem Rahmen (4) verbunden ist, und
    einen Kolben (48), der dazu bestimmt ist, mit einem Fuß (14) in Kontakt gebracht zu werden, und im Inneren des Zylinderkörpers zwischen einem ersten mechanischen Anschlag, der einer ausgefahrenen Position des Kolbens entspricht, und einem zweiten mechanischen Anschlag translatorisch beweglich ist, der einer eingezogenen Position des Kolbens entspricht, wobei der Kolben das Innenvolumen des Zylinderkörpers in eine erste Kammer (52) und eine zweite Kammer (54) trennt, die in Bezug aufeinander dicht sind,
    wobei die erste Kammer (52) von jedem Hydraulikzylinder durch zwei unabhängige Hydraulikkreise mit Hydraulikfluid versorgt wird, die einen Dämpfungskreis (22), der geeignet ist, den Kolben zwischen seiner ausgefahrenen Position und einer Zwischenposition zu verlagern, die sich zwischen der ausgefahrenen Position und der eingezogenen Position befindet und durch einen hydraulischen Anschlag definiert ist, und einen Kreis (24) zur kontrollierten Absenkung umfassen, der geeignet ist, den Kolben zwischen der Zwischenposition und seiner eingezogenen Position zu verlagern.
  2. Vorrichtung nach Anspruch 1, wobei der Kolben von jedem Hydraulikzylinder (18) im Bereich eines Endes, das sich im Inneren des Körpers des Zylinders befindet, eine Öffnung (56), die mit der ersten Kammer (52) verbunden ist, und einen Kragen (58) aufweist, der in dichten Kontakt mit einer Innenwand des Zylinderkörpers kommt.
  3. Vorrichtung nach Anspruch 2, wobei der Zylinderkörper von jedem Hydraulikzylinder mit einem Finger versehen ist, der im Inneren der ersten Kammer hervorsteht, wobei der Finger einen Außendurchmesser aufweist, der im Wesentlichen dem Innendurchmesser des Kolbens entspricht, derart dass er mit der Öffnung des Kolbens zusammenwirkt, um den hydraulischen Anschlag zu bilden, welcher der Zwischenposition des Kolbens entspricht.
  4. Vorrichtung nach Anspruch 3, wobei der Finger einen Ablasskanal (68) des Hydraulikkreises (24) zur kontrollierten Absenkung umfasst, der im Inneren des Kolbens mündet, wenn dieser sich in der Zwischenposition befindet, derart dass das Verlagern des Kolbens zwischen der Zwischenposition und der eingezogenen Position ermöglicht wird.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, wobei das Innere des Zylinderkörpers von jedem Hydraulikzylinder Auflageflächen (60, 62) umfasst, gegen die der Kragen (58) des Kolbens geeignet ist, in Kontakt zu kommen, um den ersten und den zweiten mechanischen Anschlag zu bilden.
  6. Vorrichtung nach einem der Ansprüche 3 bis 5, wobei jeder Hydraulikzylinder (18) ferner eine Führungsstange (76), die den Finger (64) mit dem Kolben (48) verbindet, und eine Feder (74) umfasst, die um die Führungsstange herum montiert ist, um beim Ausfahren des Kolbens zu helfen.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, wobei die zweite Kammer (54) von jedem Hydraulikzylinder durch einen Aufstiegshydraulikkreis mit Hydraulikfluid versorgt wird.
  8. Vorrichtung nach Anspruch 7, wobei der Aufstiegshydraulikkreis von jedem Hydraulikzylinder Rillen (70) umfasst, die in einer Außenwand des Kolbens hergestellt sind, sich auf der Außenseite der Vorrichtung öffnen und in die zweite Kammer (54) münden.
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, wobei die Kreise zur Dämpfung (22) und zur kontrollierten Absenkung (24) jeweils umfassen:
    ein Ventil (30, 40), das geeignet ist, durch ein von der Oberfläche aus ferngesteuertes Unterseefahrzeug gesteuert zu werden, und
    eine Rückschlagklappe (34, 44) parallel zum Ventil (30, 40), um das Erhöhen der beim Ausfahren der Zylinder eintretenden Fluiddurchflussmenge zu ermöglichen.
  10. Vorrichtung nach einem der Ansprüche 1 bis 9, wobei die Kreise zur Dämpfung (22) und kontrollierten Absenkung (24) jeweils mindestens ein Druckbegrenzungsventil (28, 38) stromabwärts der Hydraulikzylinder (18) umfassen.
  11. Vorrichtung nach einem der Ansprüche 1 bis 10, wobei die Kreise zur Dämpfung und zur kontrollierten Absenkung mit Meerwasser versorgt werden.
  12. Verfahren zur Installation und Wartung eines Moduls einer submarinen Behandlungsstation, das eine Vorrichtung nach einem der Ansprüche 1 bis 11 verwendet, wobei der Rahmen (4) der Vorrichtung an einem Modul befestigt ist, wobei das Verfahren während der Phasen der Absenkung und der Landung des Moduls auf einer Basis der submarinen Behandlungsstation die Schritte umfasst des:
    Ausfahrens der jeweiligen Kolben der Hydraulikzylinder der Vorrichtung, Öffnens des Dämpfungskreises und Schließens des Kreises zur kontrollierten Absenkung, um die Stöße des Moduls auf der Basis der Station zu dämpfen, und
    nachdem das Modul auf der Basis der Station gelandet ist, Öffnens des Kreises zur kontrollierten Absenkung und dabei Offenhaltens des Dämpfungskreises, um das endgültige Absenken des Moduls auf die Basis der Station bei kontrollierter Geschwindigkeit zu ermöglichen.
  13. Verfahren nach Anspruch 12, das ferner, bei einer Phase des Anhebens des Moduls, einen Schritt des Pumpens des Fluids umfasst, um es in die Kreise zur Dämpfung und zur kontrollierten Absenkung einzupressen, um die jeweiligen Kolben der Hydraulikzylinder der Vorrichtung auszufahren.
  14. Verfahren nach einem der Ansprüche 12 und 13, das ferner bei einer Phase der Bergung der Vorrichtung an der Oberfläche nach der Installation des Moduls auf der Basis der submarinen Behandlungsstation das Schließen des Kreises zur kontrollierten Absenkung und das Öffnen mechanischer Verbindungen zwischen der Vorrichtung und dem Modul umfasst, um das Heben der Vorrichtung an die Oberfläche mittels einer Winde eines Installations- und Wartungsschiffs vorzunehmen.
  15. Verfahren nach Anspruch 14, das ferner eine Phase zur Bergung des Moduls an der Oberfläche mit der an der Oberfläche geborgenen Vorrichtung umfasst, wobei die Bergungsphase die Schritte umfasst des:
    Absenkens der Vorrichtung unter Wasser ausgehend von der Oberfläche durch das Installations- und Wartungsschiff bis zu dem Modul,
    mechanischen Befestigens der Vorrichtung an dem Modul,
    Schließens des Ventils des Kreises zur kontrollierten Absenkung,
    Pumpens des Fluids, um es in die Kreise zur Dämpfung und zur kontrollierten Absenkung einzupressen, um die jeweiligen Kolben der Hydraulikzylinder der Vorrichtung auszufahren und das Modul in die Zwischenposition auf dem hydraulischen Anschlag anzuheben, und
    Bergens des Moduls und der Vorrichtung mittels der Winde des Installations- und Wartungsschiffs.
EP19703405.1A 2018-01-18 2019-01-15 Vorrichtung und verfahren zur installation und handhabung eines moduls einer submarinen behandlungsstation Active EP3740449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1850415A FR3076826B1 (fr) 2018-01-18 2018-01-18 Dispositif et procede pour l'installation et la manutention d'un module d'une station de traitement sous-marin
PCT/FR2019/050076 WO2019141933A1 (fr) 2018-01-18 2019-01-15 Dispositif et procédé pour l'installation et la manutention d'un module d'une station de traitement sous-marin

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EP3740449A1 EP3740449A1 (de) 2020-11-25
EP3740449B1 true EP3740449B1 (de) 2023-11-22

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US (1) US11148913B2 (de)
EP (1) EP3740449B1 (de)
BR (1) BR112020013690A2 (de)
FR (1) FR3076826B1 (de)
WO (1) WO2019141933A1 (de)

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Publication number Priority date Publication date Assignee Title
GB2094856B (en) * 1981-01-28 1984-12-19 Southeastern Drilling Services Slip assembly for subsea template
US6120009A (en) * 1998-04-16 2000-09-19 The Boeing Company Shock strut with managed damping and force characteristics
KR100418498B1 (ko) * 2002-01-04 2004-02-14 한근조 크레인 스프레더용 충격흡수장치.
JP4838021B2 (ja) * 2006-03-13 2011-12-14 三井造船株式会社 コンテナクレーン
DE102009015971A1 (de) * 2009-04-02 2010-10-07 Linde Material Handling Gmbh Containerstapler
NO341320B1 (no) * 2010-02-09 2017-10-09 Offshore Tech Partner As Støtdempingsanordning på lastbærer
GB2496608B (en) * 2011-11-15 2014-06-18 Subsea 7 Ltd Launch and recovery techniques for submersible vehicles and other payloads
US9650855B2 (en) * 2013-03-15 2017-05-16 Safestack Technology L.L.C. Riser disconnect package for lower marine riser package, and annular-release flex-joint assemblies
GB2529481C (en) * 2014-08-22 2020-03-18 Subsea 7 Ltd Subsea dynamic load absorber
CN104444756B (zh) * 2014-10-29 2016-08-24 刘洋 一种分段缓速卸放装置

Also Published As

Publication number Publication date
FR3076826B1 (fr) 2020-01-31
BR112020013690A2 (pt) 2020-12-01
FR3076826A1 (fr) 2019-07-19
WO2019141933A1 (fr) 2019-07-25
US20210070588A1 (en) 2021-03-11
EP3740449A1 (de) 2020-11-25
US11148913B2 (en) 2021-10-19

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