WO2014079473A1 - Système de commande de production et/ou de procédé - Google Patents

Système de commande de production et/ou de procédé Download PDF

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Publication number
WO2014079473A1
WO2014079473A1 PCT/EP2012/004880 EP2012004880W WO2014079473A1 WO 2014079473 A1 WO2014079473 A1 WO 2014079473A1 EP 2012004880 W EP2012004880 W EP 2012004880W WO 2014079473 A1 WO2014079473 A1 WO 2014079473A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
production
control system
contact element
process control
Prior art date
Application number
PCT/EP2012/004880
Other languages
English (en)
Inventor
Peter Kunow
Volker Zabe
Tobias FRERCK
Klaus BIENESTER
Original Assignee
Cameron International Corporation
Cameron Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cameron International Corporation, Cameron Gmbh filed Critical Cameron International Corporation
Priority to PCT/EP2012/004880 priority Critical patent/WO2014079473A1/fr
Publication of WO2014079473A1 publication Critical patent/WO2014079473A1/fr

Links

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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
    • E21B33/0355—Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads

Definitions

  • various production and/or process control systems which each comprise a plurality of electrically operated devices.
  • electrically operated devices comprise for example a well head device, a stand pipe connection device, various throttle and valves, blow-out-preventers or other preventers, which are especially employed as shut-off valves. Further electrically operated devices are also possible.
  • a motor control is assigned to each of the electric motors, such that in a correspondingly big production and/or process control system, besides a plurality of electric motors, also a corresponding plurality of motor controls is employed.
  • the corresponding motor controls may be centrally combined in the production and/or process control system indeed; however, a correspondingly high number of these controls is required.
  • a corresponding production system as an example of an electrical blow-out-preventer-drill-stack
  • two motor controls are required in order to be able to generate a corresponding power as well as for redundancy reasons.
  • a corresponding blow-out-preventer has four electric motors, so that also four respective motor controls are required.
  • other devices such as valves and throttles are arranged, so that also without redundancy, already 20 motor controls are required at the minimum. With simple redundancy, already 40 motor controls are required.
  • At least one multiple switching device is assigned to a motor control, such that by this combination of motor control and multiple switching device, a number of motor controls are replaceable. Due to the multiple switching device and motor controls assigned thereto, a number of electrically operated devices and the electric motors, respectively, are controlled and switched, respectively.
  • the multiple switching device has a switch housing, within which a plurality of contact elements arranged in contact groups are moveable.
  • Each of the contact elements of a contact group when moved in axial direction, may separately be brought in electrical contact with a feed-in contact element.
  • an output contact element for an electric motor for electrical supply is assigned to each of the contact element groups. This means, for example, that three of such output contact elements are assigned to three electrical connections of only one electric motor, in order to supply the motor accordingly, while a further output contact element for example provides a holding voltage or alike for a corresponding electric motor. In this manner, the electric motor is supplied at all of its connections by different output contact elements, wherein one output contact element is provided by each contact element group.
  • the corresponding contact elements of a contact element group are then useable for different electric motors, such that by only one multiple switching device a number of electric motors is controllable and suppliable.
  • the multiple switching device may also control a number of electric motors by only one open loop/closed loop motor control, when the electric motors may be assigned to different actuators or also to the same actuator.
  • the utilization of the multiple switching device takes place in the following manner.
  • a blow-out-preventer (BOP) is moved into a certain position by supplying the assigned electric motor.
  • further contact elements of the corresponding contact element group are selected, which are assigned to another electric motor of a different actuator in order to adjust it in a corresponding manner.
  • BOP blow-out-preventer
  • each of the contact element groups may be used analogously to the control or driving of further electric motors of other actuators.
  • a gradual reset of the actuators takes place, for example in an initial position or a closed position.
  • each of the contact elements may be essentially annular and contact elements of a contact element group may be arranged behind each other in axial direction.
  • every contact element group may be designed as an insertion module. This is inserted into a corresponding switch housing or withdrawn therefrom and replaced by another insertion module.
  • the contact elements or the contact element groups may be arranged in a contact piston, which is displaceable in an axial direction. This is supported moveably within the switch housing and the corresponding contact element groups may be insertable into the contact piston and may there be detachably fixed.
  • An electric motor especially a stepping motor, may thereby be assigned to the contact piston. The electric motor moves the contact piston into the corresponding positions.
  • the movement of the contact piston by means of the electric motor may be carried out by a corresponding motor control, which, however, according to the present invention, is only provided singularly for a plurality of corresponding electrically operated devices.
  • a synchronous motor is utilizable, in which a rotor is turnable by a certain angular step or a multiple thereof by means of a stepwise rotating electromagnetic field of stator coils.
  • a rotor is turnable by a certain angular step or a multiple thereof by means of a stepwise rotating electromagnetic field of stator coils.
  • stator coils usually, there are 20 to 200 angular steps per turn, whereby a high turning precision and axial displaceability not only of the stepping motor but especially of the contact piston results.
  • the motor may be in a turning connection with a threaded spindle, which is assigned to the contact piston for displacement in axial direction.
  • the latter may have a plurality of insertion bores designed with an insertion opening which may be arranged especially annularly for the insertion of an insertion module each.
  • the insertion openings are arranged on one side of the contact piston, so that from this side, all corresponding insertion modules are insertable.
  • each of the insertion holes may have a through-bore opposing the insertion opening for slidably guiding a feed-in contact element therethrough.
  • the respective feed-in contact element displaces itself analogously within the through-bore and contacts the selected element of the respective contact element group.
  • the feed-in contact element may have a contact rod with a contact end section, which may be screwed onto the contact rod. Due to the utilization of such a contact rod, a certain inherent stiffness arises, such that the feed-in contact element may be slid through the corresponding opening in this region more simply.
  • the feed-in contact element with the contact rod and the contact end section are designed such that for instance 400 A or more may be transferred per contact for example without any problems.
  • each of the contact elements is especially detachable connected to an output contact element.
  • the output contact element extends from this connection point through the insertion opening of the contact piston belonging thereto towards the outside.
  • the output contact elements of the contact elements of a contact element group may also be part of the insertion module. In this manner, this may be completely pre-manufactured from contact elements and output contact elements and may be inserted into corresponding insertion bores of the contact piston and attached there.
  • a sufficient stability of the output contact elements results especially, when they are formed rod-like and are detachably affixed at a connection and at the contact element.
  • the contact element may have a screw-in-bore for screwing in the connection end of the output contact elements.
  • each of the contact elements is connected to a output contact element, it may be regarded as advantageous if the output contact element extends from its corresponding contact element through openings of the others, which means all corresponding elements therebetween.
  • Such an opening may be formed, for example, as an opening slit open towards the outside, through which the output contact element extends in an electrically isolated manner.
  • the corresponding outer dimensions of the contact element groups essentially correspond to the outer dimensions of the respective contact elements, such that this output contact element does not protrude radially towards the outside above the contact elements.
  • Electrical insulation of an output contact element can, in this respect, be carried out relatively to the contact elements not belonging thereto, especially by an external coating.
  • An example for such an external coating is a coating with polytetrafluoroethylene. Such a material further has a very small co-efficient of friction and a high specific resistance.
  • the contact elements of the contact element group may be electrically isolated with respect to the switch housing and/or with respect to each other and/or may be arranged at a distance to each other in axial direction.
  • the annular form of the contact elements may be especially used for the feed-in contact element.
  • the feed-in contact element assigned to a contact element group respectively, may be displaceable through annular/circular openings of the contact elements of this group and may establish an electrical connection with its contact end section with the respectively selected contact element within the annular/circular opening.
  • a contact spring element may be supported within the annular/circular opening.
  • the contact end section is slid and is sufficiently contacted by the contact spring element in order to be able to also transfer high currents.
  • the contact end section may have a contact spring section protruding radially and elastically towards the outside.
  • the contact spring element may be formed as a contact leaf spring element or insert. Such a thing at least extends sectionwise along the circumference of the corresponding opening.
  • the electric motor may be designed to be redundant.
  • An example for such a redundant designed is the arrangement of two independent stepping motors, wherein the one or the other is replaced in case of a failure.
  • the stepping motor is designed redundant in itself and may have two or more corresponding rotors, which are assigned to a stator.
  • At least one position sensor may be assigned to the stepping motor or the threaded spindle, respectively. Also, the possibility exists to assign a position sensor for determining the relative position of a feed-in contact element and at least a contact element to a feed-in contact element. Through the corresponding determination of the relative position, the other relative positions of the feed-in contact elements with respect to further contact elements may then be determined through capturing the rotation of the threaded spindle or the stepping motor.
  • Fig. 1 shows a principle illustration of an embodiment of an electric production and/or process control system
  • Fig. 2 shows part of system according to Fig. 1 with a plurality of motor controls according to the prior art
  • Fig. 3 shows the system according to Fig. 1 according to a second embodiment of the invention
  • Fig. 4 shows a third embodiment of an electric production and/or process control system according to the invention.
  • Fig. 5 shows a fourth embodiment of an electric production and/or process control system according to the invention
  • Fig. 6 shows a perspective top view of an embodiment of a multiple switching device according to the present invention
  • Fig. 7 shows a longitudinal section through the multiple switching device according to
  • Fig. 8 shows a perspective top view for a second embodiment of a multiple switching device in analogy to Fig. 6;
  • Fig. 9 shows a longitudinal section through the embodiment according to Fig. 8 in analogy to Fig. 7.
  • Fig. 1 shows a principle illustration of a first embodiment of a production and/or process control system 1 according to an embodiment of the present invention in the form of a maritime electric BOP-system.
  • a number of electrically driven devices 2 are stacked above each other in the form of an eruption cross or Christmas tree. Such a stacking is also called a stack.
  • the respective stack is supplied redundantly, see the two control pods 39.
  • Each of these control pods has a power supply 41 , a control unit 40 with a microprocessor, one or more motor controls 10, 11 , 12 or 13 as well as at least one multiple switching device 18, 19, respectively.
  • the respective multiple switching device 18, 19, respectively, is assigned to the motor control 10, 1 1 and 12, 13, respectively.
  • the multiple switching device is further described in the following with reference to Fig. 6.
  • the respective control pods 39 are connected to the electrically driven devices 2 via electric connection lines 16.
  • Electrically driven devices are for example a well head device 3, a stand pipe connection device 4, various rams, preventers 8 or blow-out-preventers 7 as well as valves 6 and throttles 5.
  • Corresponding electric motors are assigned to the valves and throttles 5, 6, respectively, for adjustment.
  • Corresponding electric motors are also assigned to the other electrically driven devices 2, wherein also two or more of the electric motors may be arranged for adjustment for redundancy reasons.
  • two control pods 39 are provided, wherein the connection lines 16 illustrated as solid lines are the primary connection lines and the connection lines 17 not illustrated as solid lines are the respective secondary connection lines for redundancy.
  • Fig. 1 only two motor controls 10, 1 1 and 12, 13, respectively, are provided wherein for example overall only four motor controls and two respective multiple switching devices are arranged for the entire construction already with redundancy. Thereby, the number of required motor controls is decreased, see for example Fig. 2, whereby both less space as well as especially fewer costs are required or incurred, respectively.
  • the motor controls 10, 11 and 12, 13, respectively are designed for supplying the electrically driven devices 2 having the highest power demands.
  • an actuator for a BOP requires about a 400 A
  • a valve actuator as the case may be, may require only 10 A.
  • the respective motor control is designed in order to meet the highest power demand.
  • Fig. 2 shows the two control pods 39 which are employed without the respective multiple switching devices 18, 19 according to Fig. 1.
  • the construction of the control pods 39 corresponds to that of Fig. 1 , except for the plurality of motor controls 10, 11 and 12, 13, respectively. Thereby, it is be considered that for each BOP for example, four motor controls are required, which are not all illustrated in Fig. 2. Under the same construction of the corresponding stacks, see Fig. 1 , 40 motor controls are required according to Fig. 2 and according to Fig. 1 , only four motor controls are required. Thus, the result is a substantial reduction of costs.
  • a line 44 serves for an electrical operation of a remotely operated vehicle (ROV) and a further line 45 serves as an electric signaling line in case of an emergency.
  • ROV remotely operated vehicle
  • the respective control pods 39 may also be realized in the form of electric control modules on the bottom of the sea. These are generally called ESCM (electrical subsea control module).
  • Fig. 3 shows respective control pods 39 for a second embodiment according to the present invention. Except for the parts shown in Fig. 3, the construction of the production and/or process control system 1 according to Fig 3 corresponds to that of Fig. 1.
  • a corresponding power supply 41 and a multiple switching device 18 are assigned to the two control pods 39.
  • the multiple switching device 18 is operable according to the respective requirements from one of the control pods 39.
  • the rest of the electrical lines correspond to those of Fig. 1.
  • Fig. 4 shows another embodiment of a production and/or process control system according to another embodiment of the present invention.
  • This serves for an electric tree-control system for example with two redundant control pods 39.
  • the control pods 39 again are connected to actuators 46 via respective electrical lines 16, 17. These are actuated and supplied by respective settings of the multiple switching device 18, 19 and control and adjust the assigned electrically driven devices 2 in the form of valves, throttles and alike on their own accord.
  • the control pods 39 analogously to the Figs. 1 and 3, further have a power supply 41 and a control unit 40 with a microprocessor. Furthermore, two motor controls 10, 11 and 12, 13, respectively, are arranged within every control pod 39.
  • the motor controls 11 and 13 serve for a direct control of an actuator, see the direct electrical connection line between the motor control 11 and 13 and the respective actuator on the right outer side in Fig. 4.
  • An emergency bypass line 47 is assigned to each of the multiple switching devices 18, 19, via which, as the case may be, by bridging or bypassing of the multiple switching devices, a corresponding supply of at least one or a number of the actuators is possible.
  • Such a system may further be facilitated in that a maximum possible number of actuators is used, which for example, are automatically arranged in their safety position during failure of an electric supply, such that an electric holding in this safety position is not necessary.
  • a safety position is a closed position of a respective valve for example or a closing of a BOP.
  • a third embodiment of a production and/or process control system is illustrated.
  • a number of corresponding trees are supplied by two control pods 39.
  • the construction of the control pods 39 essentially corresponds to that of Fig. 4, wherein the control pod arranged at the right side of Fig. 5 overall has three motor controls 13 for redundant supply, which are directly connected to respective actuators 46 without interposition of a multiple switching device 19.
  • the rest of the motor controls 10, 11 , 12 are assigned to the multiple switching devices 18 and 18, respectively, wherein between these, a multiple power supply 48 is arranged, see also Fig. 4.
  • This multiple power supply 48, according to the multiple switching devices 18, 19 has a matching number of terminals.
  • ROV-terminal 49 is assigned to each of the control pods 39.
  • the respective control pods may be connected to devices at the surface of the sea or also with further central control devices on the bottom of the sea.
  • the motor controls which are connected to the multiple switching devices 18, 19, it is further noted that they serve for controlling corresponding throttles are alike by means of a PID-control (proportional-integral-derivative controller).
  • the multiple switching device has an electric drive in the form of a stepping motor 26. This is detachably fixed to an end of a switch housing 20.
  • the switch housing 20 is formed pot-shaped and a contact piston 25 is moveably supported in the switch housing 20. In the Figs. 6 and 7, the contact piston is exerted or pushed out and in Figs. 8 and 9 it is inserted or pushed in.
  • the stepping motor 26 may have a positioning sensor 39, which captures a corresponding turning position of the stepping motor and may convert it into an adjustment of a threaded spindle 27 connected to the stepping motor.
  • the threaded spindle 27 extends to a central hole or bore 30 of the contact piston 25.
  • a threaded member 28 is arranged at an end of the contact piston 25 assigned to the threaded spindle 27 .
  • the threaded spindle 27 is rotatably supported and in engagement with a corresponding thread. By turning the threaded spindle 27, the contact piston 28 is analogously adjusted in axial direction.
  • a number of feed-in contact elements 23 radially extend towards the exterior essentially in the form of an L. With an end arranged within the switch housing 20, these feed-in contact elements 23 are connected to a contact rod 29. This is located stationary within the contact housing 20, wherein during an adjustment of the contact piston 25 in axial direction, the respective relative displacement of the contact rod 29 with respect to a number contact elements 22 is achieved.
  • the contact elements 22 are formed essentially annular and have an inner hole, wherein the contact rod 29 is slidably arranged.
  • Each of the contact elements 22 is connected to an output contact element 24. These may be connected to further electrical connecting devices, such as electrical lines or alike.
  • the respective output contact elements 24 are in electrical connection with electric lines 16 and 17, respectively, according to the proceeding figures.
  • the output contact elements are pooled as various contact element groups 21 , see Figs. 6 and 7, wherein the corresponding contact element group 21 is assigned to a number of contact elements 22, respectively, see for example Figs. 7 and 9.
  • the different output contact elements are pooled as various contact element groups 21 , see Figs. 6 and 7, wherein the corresponding contact element group 21 is assigned to a number of contact elements 22, respectively, see for example Figs. 7 and 9.
  • connection may be made for example by threading in a connection end 32 of each of the output contact elements 24 into a thread within in the hole 33 of the contact elements 22 assigned thereto.
  • the feed-in contact elements 23 of the different contact element groups 21 are arranged concentrically around the threaded spindle and the central hole 30 of the contact piston 25.
  • the contact rod 29 On the end of the contact rod 29 facing the contact elements 22, the contact rod 29 has a contact end section 34. This may be formed by a contact device which is screwed onto, (see Fig. 7) or held by the contact rod, (see Fig. 9). With a corresponding adjustment of the contact rod in axial direction, the contact end section 34 comes into contact with the respective contact element 22 from the inside and establishes an electrical connection between the feed-in contact element 23 and the output contact element 24.
  • a contact spring element 35 may be arranged within the respective contact element 22. Also the possibility exists that a contact element elastically facing towards the exterior is arranged at the contact end section 34 of the contact rod 29, see Fig. 9.
  • a mounting wall plate 37 is provided at which the contact piston 35 with its front side is detachably fixed in a one-sided manner.
  • the mounting wall plate 37 may have a vertically extending bottom plate, which serves for mounting the respective multiple switching device 18 and 19, respectively, at the control pod 39 or another device of the position and/or process control system.
  • each of the respective output contact elements 24 has an exterior coating of polytetrafluoroethylene for example, i.e. an exterior coating with a high specific resistance. In this manner, an electric contact between the output contact element and the contact elements not belonging thereto is prevented.
  • the various contact elements 22 have openings, which are open in radial direction towards the outside or are also closed, through which the output contact elements 24 are guided into the interior of the contact piston 25 to their associated assigned contact element 22.
  • output contact elements 24 belonging to the contact elements 22 of the respective contact element groups 21 may be handled as a replaceable module which is insertable into the respective insertion opening 31 of the contact piston 25. In this manner, a simple adjustment to corresponding electrically operated devices and their number of terminals may be achieved.
  • One output contact element of a corresponding contact element group each is assigned to a terminal of a corresponding electric motor of the electrically operated device, such as in the illustrated embodiment, see Figs.
  • a multiple switching device may supply a further multiple switching device which also may have five feed-in contact elements.
  • data is transferred to subsequent devices.
  • the number of contact element groups, the number of contact elements arranged in each contact element and analogously the number of the output contact elements is variable and also different numbers of contact elements and output contact elements may be employed at a multiple switching device.
  • the corresponding positioning sensor also serves for precisely determining or capturing which of the corresponding contact elements is connected to the associated feed-in contact element 23 by positioning the contact rod 29.
  • the multiple switching device is utilized for supplying multiple electric motors of actuators by means of only one feed forward/feed back motor control.
  • eight electric motors with five terminals are each are suppliable, see the five feed-in contact elements as well as the eight output contact elements assigned to each feed-in contact element.
  • An output contact element of each of the contact element groups may thereby be assigned to a terminal of an electric motor and, by the corresponding output contact elements of each of the contact groups, over five terminals of this electric motor are suppliable.
  • three output terminals may be connected to the respective windings of the electric motor, while the other two output contact elements may for example generate a holding torque of the electric motor or may provide a DC emergency power supply.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un système électrique de commande de production et/ou de procédé (1) spécialement pour la production d'huile minérale/gaz naturel, comportant une pluralité de dispositifs à entraînement électrique (2), tels que 4), un accélérateur (5), une vanne (6), un bloc d'obturation de puits (7) et similaires. Au moins un moteur électrique pour le fonctionnement et/ou le réglage du dispositif est affecté à chacun de ces dispositifs (2). Un tel moteur électrique est exploitable par une commande de moteur correspondante (10 à 13), au moins un dispositif de commutation multiple (18, 19) est affecté à la commande de moteur respective (10 à 13). Le dispositif de commutation multiple comporte un boîtier de contacteur (20), au sein duquel une majorité d'éléments de contact (22) disposés en groupes de contacts (21) sont déplaçables. Chacun des éléments de contact peut être amené séparément en contact électrique avec un élément de contact d'alimentation (23) par déplacement. Un élément de contact de sortie (24) pour alimenter électriquement chacun des moteurs électriques est affecté à chacun des groupes de contacts (21). Selon l'invention, un système électrique de commande de production et/ou de procédé est amélioré dans le sens où simultanément une construction simplifiée du système et une réduction significative des coûts sont rendues possibles sans restrictions des demandes de redondance.
PCT/EP2012/004880 2012-11-26 2012-11-26 Système de commande de production et/ou de procédé WO2014079473A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/004880 WO2014079473A1 (fr) 2012-11-26 2012-11-26 Système de commande de production et/ou de procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/004880 WO2014079473A1 (fr) 2012-11-26 2012-11-26 Système de commande de production et/ou de procédé

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WO2014079473A1 true WO2014079473A1 (fr) 2014-05-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106300811A (zh) * 2016-08-26 2017-01-04 珠海凯邦电机制造有限公司 一种调速电机
WO2019144003A1 (fr) * 2018-01-18 2019-07-25 Safe Marine Transfer, LLC Unité de commande électrique intelligente sous-marine
WO2022120193A1 (fr) * 2020-12-03 2022-06-09 Onesubsea Ip Uk Limited Système de barre omnibus d'actionneur électrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072999A1 (fr) * 2001-03-09 2002-09-19 Alpha Thames Ltd Raccord d'alimentation a des arbres de tete de puits et/ou commande d'arbres de tete de puits
WO2007055587A1 (fr) * 2005-11-11 2007-05-18 Norsk Hydro Produksjon A.S Systeme et ensemble sous-marin d'alimentation sans coupure
WO2007071266A1 (fr) * 2005-12-19 2007-06-28 Siemens Aktiengesellschaft Systeme d’alimentation electrique pour systeme sous-marin
WO2008074995A1 (fr) * 2006-12-21 2008-06-26 Geoprober Drilling Limited Système de stockage d'énergie électrique et de fourniture d'un fluide sous pression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072999A1 (fr) * 2001-03-09 2002-09-19 Alpha Thames Ltd Raccord d'alimentation a des arbres de tete de puits et/ou commande d'arbres de tete de puits
WO2007055587A1 (fr) * 2005-11-11 2007-05-18 Norsk Hydro Produksjon A.S Systeme et ensemble sous-marin d'alimentation sans coupure
WO2007071266A1 (fr) * 2005-12-19 2007-06-28 Siemens Aktiengesellschaft Systeme d’alimentation electrique pour systeme sous-marin
WO2008074995A1 (fr) * 2006-12-21 2008-06-26 Geoprober Drilling Limited Système de stockage d'énergie électrique et de fourniture d'un fluide sous pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106300811A (zh) * 2016-08-26 2017-01-04 珠海凯邦电机制造有限公司 一种调速电机
WO2019144003A1 (fr) * 2018-01-18 2019-07-25 Safe Marine Transfer, LLC Unité de commande électrique intelligente sous-marine
WO2022120193A1 (fr) * 2020-12-03 2022-06-09 Onesubsea Ip Uk Limited Système de barre omnibus d'actionneur électrique

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