EP2789859B1 - Installation de pompage pour forages profonds - Google Patents

Installation de pompage pour forages profonds Download PDF

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Publication number
EP2789859B1
EP2789859B1 EP13162716.8A EP13162716A EP2789859B1 EP 2789859 B1 EP2789859 B1 EP 2789859B1 EP 13162716 A EP13162716 A EP 13162716A EP 2789859 B1 EP2789859 B1 EP 2789859B1
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EP
European Patent Office
Prior art keywords
conveying device
conveying
riser
driving shaft
ascension pipe
Prior art date
Legal status (The legal status 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 status listed.)
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Application number
EP13162716.8A
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German (de)
English (en)
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EP2789859A1 (fr
Inventor
Sebastian Tafelmeier
Gerhard Müller-Pettenpohl
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Individual
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Individual
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Priority to EP13162716.8A priority Critical patent/EP2789859B1/fr
Publication of EP2789859A1 publication Critical patent/EP2789859A1/fr
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Publication of EP2789859B1 publication Critical patent/EP2789859B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648—Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a system for the promotion of water from wells and deep wells for water supply and geothermal use of hot water or other liquids.
  • FIG. 3 is a conveyor system 100 to see from the prior art.
  • a wellbore is inserted into the soil at a desired depth, and the wellbore is stabilized by wellbore casing with a support tube.
  • the conveyor system 100 itself has a drive motor 101, a riser 102 formed from tube segments, a pump device 108 and a multiply mounted and coupled drive shaft 106, which connects the drive motor 101 to the pump device 108.
  • the pump device 108 is integrated in a pump tube, which is flanged at the lower end by means of a transition tube 103 to the riser 102.
  • the pump 108 is arranged in one end of the riser 102, wherein this end is then in the installed state of the conveyor 100 at the lower end in the borehole.
  • the drive shaft 106 for transmitting the torque from the drive motor 101 to the pump device 108 is mounted at regular intervals in the riser 102 with plain bearings 107 to avoid damage from the vibrations of the drive shaft.
  • the drive motor 101 is located at the upper end of the riser 102.
  • centrifugal pumps When using pumps for hot water production from deep geothermal wells Underwater centrifugal pumps used. These centrifugal pumps operate on the principle of action of the swirl due to the transfer of energy to a liquid through a rotating impeller in a fixed nozzle.
  • the design of the centrifugal pumps differs according to the requirements of the design and the number of stages.
  • displacement pumps for example progressing cavity pumps according to the Moineau pump principle, can also be used at lower temperatures.
  • the riser 102 consists of individual segments which are modularly flanged together with pre-assembled and integrated pump device 108 and drive shaft 106 to each other and then inserted into the support tube.
  • riser is then flanged to the support tube for attachment to the head.
  • the shaft segments of these standardized riser modules may further each be surrounded by a further cladding tube (not shown) to allow the lubrication of the individual bearing segments independently of the axially upward flow rate.
  • the lubricant partially penetrates into the pumped medium, thus causing contamination of the pumped medium.
  • the overall length of the riser segments is shorter than 6 m.
  • the number of stacked riser segments is limited, so that only a total length of about 400 m can be achieved.
  • Object of the present invention is therefore to provide a conveyor system that can not only be used optimally for deep wells, but also allows a reliable and relatively uncomplicated replacement of relevant components and parts.
  • a system for conveying water from wells and deep wells for water supply and geothermal use of hot water or other liquids comprises the features of claim 1.
  • Such a conveyor system comprises a conveying device for conveying water, a drive device, which the Conveying device drives, a drive shaft which connects the drive device and the conveying device for driving the conveying device, and a riser, and in which at least the drive shaft and the conveyor device are arranged, wherein the drive shaft and the conveyor in the riser and relative to the riser in axial Direction are movably mounted.
  • the system comprises a locking device, by means of which the conveyor system in the riser in the axial direction can be locked and a lifting device which can move the drive shaft in the axial direction and biases the drive shaft. This makes it possible to remove the drive shaft and the conveyor independent of the riser from the pump system.
  • the riser pipe can remain in the borehole after a single installation and the delivery pump is installed and removed by removing the drive shaft (with delivery device) without the simultaneous removal of the riser pipe being required.
  • This allows the replacement of parts of the system (eg. The conveyor) can be significantly accelerated and the standstill of the system can be reduced accordingly.
  • the drive shaft is installed without intermediate connection to flanged riser segments, but as a screwed drive shaft whose lateral deflection during rotation by variable bias in the longitudinal direction and conditional centering is prevented can be dispensed with lubricants that can otherwise escape into the fluid.
  • the running safety is achieved by an axial tensile force (the weight of conveyed in the riser medium) through which the drive shaft is stretched and elongated and thus stretched.
  • the conveyor system further comprises a bearing device which supports the conveyor device in the Riser supports.
  • a bearing device enables a precise positioning of the conveying device in the end position in a simple manner.
  • the bearing device may comprise a first bearing element, which is fixedly mounted on the riser tube, and a second bearing element, which is fastened to the conveying device, wherein the first and second bearing element are axially movable relative to each other.
  • Such a two-part storage device is a little expensive construction to design the storage device safely.
  • the conveying device is preferably mounted rotationally fixed to the riser in the circumferential direction.
  • the function of the conveyor system is ensured and an optimal position of the conveyor system allows, so that the pump in the axial direction of the riser, the pumped medium (eg water) can promote.
  • the non-rotatable mounting of the bearing device in the riser can be provided such that the bearing elements have complementary projections and recesses, for example. Guide ribs and grooves, so that the bearing elements are fixed to each other in the direction of rotation. Since the storage devices are respectively fixed to the riser and to the conveyor, a relative movement in the circumferential direction between the conveyor and the riser can be prevented.
  • the pump system may further comprise a guide portion which guides the conveyor to its working position.
  • the guide section may be provided in the storage device.
  • the guide portion facilitates the positioning of the conveyor and also makes it possible to fix the position concretely.
  • the guide portion is integrated in the two-part bearing device, such a predetermined positioning in the end position (which is also the storage position) is very simple and effective to perform.
  • the guide portion is preferably provided by the complementary projections and recesses. Thereby, a simple construction of the bearing device with a multi-layered functional bundling is provided.
  • any desired drive device can be combined with any conveying device and at the same time the rotational speed of the drive shaft can also be controlled so that fewer vibrations occur there.
  • a reduction gear can also be removed independently of the riser together with the drive shaft and the feed pump.
  • the drive shaft can also be stored in the riser.
  • bearing cages are suitable as storage in the radial direction. As a result, vibrations of the drive shaft can be better damped and the life of the system can be increased.
  • the bearing element is sealed against the riser, in particular with a plastic seal. This reliably prevents leakage on the bearing element and maintains the efficiency of the conveyor system.
  • the drive shaft of the conveyor system can be mechanically prestressed. As a result, a higher running safety is achieved when starting the system, since at this time, the pumped medium is first pumped into the riser.
  • the system also has a locking device by means of which the conveyor system can be locked in the riser in the axial direction.
  • Locking is releasable, so that the maintenance or dismantling of the system can still be easily performed.
  • the shaft can be effectively biased, which has a very beneficial effect on the running properties.
  • a locking device that acts like a bayonet lock is a simple but effective and inexpensive way to implement such a locking mechanism.
  • Topic is used to denote a direction in FIG. 1 in the installed state of the conveyor 8 in the direction of the drive device 1 shows and “down” in the direction of the bottom of the hole.
  • Axial refers to a direction that runs along the axis of the drive shaft 6, that is usually from top to bottom or vice versa.
  • Ring means a direction perpendicular to the axial direction, ie, with respect to the drive shaft from the central axis of the drive shaft in the direction of the lateral surface.
  • circumumferential direction means along the lateral surface of the drive shaft or the riser (for example, the rotational direction of the drive shaft).
  • medium means in the The present application any conceivable liquid, such as water, but also oil or even gas are conceivable with the present invention.
  • the invention is used in a geothermal plant, which can generate heat by means of hot water.
  • each tube in which the fluid can rise to the top, that is promoted to the surface.
  • This can thus also be the well casing (the support tube) 14 itself.
  • the term refers to a additionally provided in the well casing 14 pipe 2, in which the medium is conveyed upwards.
  • the conveyor system according to the invention consists of a drive device 1, a drive shaft 6 and a conveyor device 8.
  • a riser 2 is provided, which is provided separately from the support tube 14 of the borehole.
  • the present invention can also be realized with only one tube, for example if a support tube is not necessary, as may be possible with holes having a shallow depth of, for example, 30 m. In the following, however, it is assumed that an installation in which the borehole itself is stabilized by an additional pipe and in which the riser pipe 2 is then used.
  • the riser 2 is depending on the depth of the hole from different modules that are flanged to each other or attached to each other in other ways.
  • the individual modules are welded together when inserted into the borehole, so that a single, very long pipe is formed. This is possible because the riser 2 after installation in the well or can remain in the support tube 14 and no longer needs to be taken out for maintenance of the system 1.
  • the riser 2 is then flanged to the support tube 14, making it immobile to the environment.
  • the riser 2 can also be fixed differently, for example, via its own storage or anchoring in the ground, so that it is fixed to the environment.
  • an outlet pipe 3 may be provided, in which the conveying medium is led out of a side arm 3 of the riser.
  • the lower end of the riser 2 is either made open or the riser 2 has openings in the side, so that the medium to flow freely into the riser and can be supported from there. The same applies to the support tube 14th
  • the drive device 1 may be any drive device, preferably an (electric) motor, which is tuned to the respective load.
  • the drive device 1 can also have a variable speed for adaptation of delivery rate and pressure, for example by being operated by use of a frequency converter.
  • the drive device 1 is preferably attached via a torque receiving 7 on the riser 2, so that the torque of the motor 1 can also be transmitted to the drive shaft 6.
  • the torque holder 7 is attached to an intermediate tube 17 on the motor side and also on the riser (eg welded, screwed, or the like).
  • the drive device 1 can also be fixed differently to the environment, so that it does not rotate around itself when it is to drive the drive shaft 6.
  • the intermediate tube 17 is at least axially movable to the riser 2.
  • the conveyor 20 may also include a lifting device 15, which is used as a biasing means for the drive shaft 6 and with which the drive shaft 6 can be raised in the axial direction.
  • a lifting device 15 is used as a biasing means for the drive shaft 6 and with which the drive shaft 6 can be raised in the axial direction.
  • the drive shaft 6 can be mechanically biased and thus made less sensitive to vibration build-up.
  • the torque receiver 7 is also provided in the lifting device 15 in order to save space and costs.
  • the drive shaft 6 is preferably also divided into segments and modular.
  • the individual segments of the drive shaft 6 can, with a thread which is introduced directly into the shaft, screwed together and thus connected, but can also be connected to each other via connecting flanges or be coupled via universal joints.
  • the drive shaft 6 is preferably formed as a hollow shaft (represented by the dashed line in, so that on the one hand can be saved weight and on the other an easy way to lay lines for conveying devices., For example, with such lines hydraulic, electro-hydraulic, electronic or electromagnetic Functions on the conveyor device 8 are actuated.
  • the conveying device 8 can be any pump, for example a centrifugal pump or a rotary displacement pump, such as an eccentric screw pump according to the principle of the Moineau pump.
  • the conveyor 8 is fastened with a fastening device 10 in the riser 2, that it is fixed in the circumferential direction, but can move in the axial direction or at least can be brought into a position in which it can be taken out of the riser 6 in the axial direction without having to remove this too.
  • This can be done, for example, by a fixing unit provided on the pump, which can press, for example by a signal of a control unit electrically, electromagnetically, electrohydraulically or hydraulically brake shoes (not shown) against the riser, so that the conveyor device 8 is fixed in position.
  • the riser may have a conical shape expanding from top to bottom so that the jaws have a self-reinforcing clamping function when the drive shaft 6 is pulled up together with the conveyor 8.
  • Another possibility are bolts that can be extended in the radial direction and the conveyor 8 also set in the circumferential and axial directions.
  • a bearing device 10 is provided at a predetermined position in a riser segment, which cooperates with the conveying device 8 and supports the conveying device 8 in the riser pipe 2.
  • a bearing element should set the conveyor 8 in the circumferential direction.
  • the bearing device 10 consists of two separate elements 10a and 10b, wherein a bearing element 10a is fixed to the riser 2, for example by welding or screwing, or is integrally implemented in the corresponding riser segment, for example, by being cast or forged during manufacture, or is milled into the riser 2.
  • a second bearing element 10b is provided on the conveying device 8 itself and cooperates with the first bearing element 10a.
  • the two bearing elements 10a, 10b can be used as radially protruding projections on the Conveying device 8 and complementary recesses or grooves may be formed in the riser 2, which are formed in particular at a portion with a radially inwardly reinforced wall (a thickening) of the riser 2.
  • the projections and the recesses may, for example, each be designed as intermeshing ribs.
  • the projections and the recesses can be reliably prevented movement in the circumferential direction of the conveyor 8 in the riser 2, so that the conveyor 8 is fixed in the circumferential direction and the rotation of the drive shaft 6 or the self-rotation of a pump in the conveyor 8, the conveyor 8 in Rising tube 2 can not move in the circumferential direction in motion, so that the torque of the drive device 1 is reliably transmitted to the conveyor device 8.
  • the projections and the recesses have a guide device with which the conveyor device 8 is automatically guided into the first bearing element 10 a of the riser 2 when a predetermined position is reached.
  • the protrusions on the conveyor 8 on the underside and the walls of the grooves on the upper side are tapered or rounded, so that when these peaks / roundings meet, a guide results and the respective bearing elements 10a, 10b automatically slide into one another.
  • the projections or the walls of the grooves can also have ends 16 which are inclined in the radial direction on the upper side (rising tube) or underside (conveying device 8). These can serve for Radialzentritation the conveyor system, for example, by deflecting an annular portion 9 at the lower end of the conveyor towards the center.
  • a locking mechanism for the conveyor 8 which also prevents upward movement in the axial direction.
  • This can be realized simply by the principle of a bayonet closure, i. the recess or groove 13 in the first bearing element 10a is U-shaped and the projection 12 is guided along this U-groove.
  • the projection 12 of the conveyor 8 is guided to a lower stop of the groove, then the projection 12 along the Nutgroundes guided by rotating the conveyor 9 and finally lifted back up against a stop.
  • a mechanism is, for example, also referred to as a bayonet closure, in which the recess 13 is then, so to speak, a movement space for locking and unlocking.
  • a hydraulic or electromagnetic lifting mechanism (not shown) provided in the riser 2 below the storage device 10 and below the conveyor 8 may serve.
  • a lifting device 15 is provided at the upper end of the drive shaft 6, which can then also be used as a biasing means.
  • a ring section 9 is located below the bearing device 10, a ring section 9.
  • This ring section can directly adjacent to the bearing device 10, as in the FIGS. 1 and 2 is shown and so as an axial stop for the conveyor 8 or also used as a lower groove base for a bayonet closure or the like, as described above.
  • the projections 12 or ribs 12 of the second bearing device 10b may abut against the ring portion 9 and thus prevent the conveyor 8 from being further lowered. This can thus also assume a display function with which it is pointed out during installation that the conveying device 8 has reached the predetermined position.
  • This adjacent ring section 9 is used in particular as a sealing section, by means of which the conveying device 8 is sealed against the riser pipe on the outside.
  • a sealing ring 5 made of plastic or metal is used, which is shown in the present embodiment.
  • the seal should be provided on a sealing portion 9, which includes two opposite smooth surfaces to improve the sealing effect. This prevents leakage of the pumped medium.
  • the drive shaft can be additionally stored in the riser, even if this is not absolutely necessary. Such storage can be carried out by means of bearing cages, which store the drive shaft in the radial direction relative to the riser and can mitigate or prevent vibrations.
  • the bearing cages are not fixed axially in the riser so that the bearing drive shaft 6 can be out of the riser together with the conveyor 8.
  • the drive shaft 6 is preferably also mounted directly behind the drive device 1 with corresponding bearings.
  • the conveyor may have on the conveyor 8, a transmission 19, with which the speed and the torque of Drive shaft 6 are set to the conveyor device 8, that is, the torque and the rotational speed are adapted to the conveyor device 8.
  • the drive shaft 6 run at a very low speed, which in turn has a positive effect on resulting vibrations.
  • An additional transmission device (not shown) between the drive device 1 and the drive shaft 6 may be provided. So any drive device can be used, because the respective power can be converted by the gearbox suitable.
  • the construction of a plant is as follows: First, a hole in the desired depth is introduced into the ground and secured the hole with a support tube.
  • This support tube preferably has holes in the lower region, so that the medium to be pumped can flow from the ground into the support tube.
  • the riser is inserted segment by segment in the support tube and flanged with the support tube (or attached to the environment accordingly).
  • the conveyor 8 is used with the drive shaft in the riser and brought to the final position.
  • the conveyor system is preferably used in the bearing element and set in the circumferential direction. Eventually there is also a locking in the axial direction, as described above.
  • the riser section is attached to the side arm, the pretensioner, if any, is mounted, and finally the drive device is mounted.
  • the drive shaft is mechanically preloaded first, or else the delivery medium is conveyed, so that a pressure on the delivery device 8 is built up by the weight of the delivery medium above the delivery device 8.
  • This pressure gives the drive shaft a tension that makes her run smoothly.
  • vibrations during operation are mitigated solely by the conveyor medium located above the conveying medium, or even prevented.
  • this can also be supported by the biasing device 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (12)

  1. Installation (20) pour pomper de l'eau des puits et puits profonds pour l'approvisionnement en eau et l'utilisation de l'énergie géothermique de l'eau chaude, comprenant:
    un dispositif de pompage (8) pour pomper un milieu de pompage;
    un dispositif d'entraînement (1), qui entraîne le dispositif de pompage (8);
    un arbre d'entraînement (6), qui connecte le dispositif d'entraînement (1) et le dispositif de pompage (8) l'un avec l'autre pour l'entraînement du dispositif de pompage (8) ;
    une colonne montante (2), dans laquelle au moins l'arbre d'entraînement (6) et le dispositif de pompage (8) sont disposés, dans lequel le dispositif d'entraînement (1) est disposé à l'extrémité supérieure de la colonne montante (2); et
    un dispositif de fixation (10), qui limite le dispositif de pompage dans la position d'extrémité au moins dans la direction circonférentielle;
    dans lequel l'arbre d'entraînement (6) et le dispositif de pompage (8) sont montés dans la colonne montante (2) de telle manière que ces-ci sont librement mobiles dans la direction axiale par rapport à la colonne montante (2) au moins pendant le démontage du dispositif de pompage (8);
    caractérisé en ce que
    un dispositif de verrouillage est prevu avec l'installation (20) par moyens duquel le dispositif de pompage (8) peut etre bloqué dans la direction axiale dans la colonne montante (2) et l'installation comprend un dispositif de levage (15), qui peut déplacer l'arbre d'entraînement (6) dans la direction axiale et qui précharge l'arbre d'entraînement.
  2. Installation (20) selon la revendication 1, dans laquelle le dispositif de fixation comprend au moins un dispositif de support (10a, 10b) dans la colonne montante, lequel supporte le dispositif de pompage (8) dans la colonne montante (2).
  3. Installation (20) selon la revendication 2, dans laquelle le dispositif de support (10a, 10b) comprend un premier élément de support (10a), qui est monté de façon immobile à la colonne montante (2), et un deuxième élément de support (10b), qui est fixé au dispositif de pompage (8), dans lequel le premier (10a) et le deuxième (10b) élément de support sont mutuellement mobiles axialement.
  4. Installation (20) selon l'une des revendications précédentes, dans laquelle le dispositif de pompage (8) est monté de manière non rotative à la colonne montante (2).
  5. Installation (20) selon la revendication 3 et 4, dans laquelle le montage non rotative est prévu dans le dispositif de support (10a, 10b) de telle manière que les éléments de support (10a, 10b) comprennent des saillies et évidements complémentaires, qui fixent les éléments de support (10a, 10b) entre eux dans le sens de circulation.
  6. Installation (20) selon l'une des revendications précédentes, comprenant en outre une partie de guidage, qui guide le dispositif de pompage (8) dans sa position de travail.
  7. Installation (20) selon la revendication 3 et 6, dans laquelle la partie de guidage est prévue dans le dispositif de support (10a, 10b).
  8. Installation (20) selon l'une des revendications précédentes, dans laquelle entre le dispositif d'entraînement (1) et l'arbre d'entraînement (6) et/ou entre l'arbre d'entraînement (6) et le dispositif de pompage (8) est prévu un dispositif de transmission.
  9. Installation (20) selon l'une des revendications précédentes, dans laquelle l'arbre d'entraînement (6) est monté dans la colonne montante (2) par moyen des cages de support mobiles axialement dans la colonne montante (2).
  10. Installation (20) selon l'une des revendications précédentes en combinaison avec la revendication 2, dans laquelle l'élément de support est rendu étanche par rapport à la colonne montante, en particulier par un joint d'étanchéité en plastique.
  11. Installation (20) selon l'une des revendications précédentes, dans laquelle le dispositif de verrouillage comprend un verrou à baïonnette.
  12. Procédé d'installation d'une installation de pompage (20) pour pomper de l'eau des puits et puits profonds pour l'approvisionnement en eau et l'utilisation de l'énergie géothermique de l'eau chaude, comprenant les étapes:
    - introduction par parties et fixation d'au moins une colonne montante (2) dans un trou de forage ou dans un tube de support dans un trou de forage;
    - insertion du dispositif de pompage (8) avec l'arbre d'entraînement (6) dans la colonne montante (2);
    - verrouillage du dispositif de pompage dans la direction axiale;
    - montage du dispositif d'entraînement (1) à l'arbre d'entraînement (6) à l'extrémité supérieure de la colonne montante; et
    - précharge de l'arbre d'entraînement.
EP13162716.8A 2013-04-08 2013-04-08 Installation de pompage pour forages profonds Active EP2789859B1 (fr)

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Application Number Priority Date Filing Date Title
EP13162716.8A EP2789859B1 (fr) 2013-04-08 2013-04-08 Installation de pompage pour forages profonds

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EP13162716.8A EP2789859B1 (fr) 2013-04-08 2013-04-08 Installation de pompage pour forages profonds

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EP2789859A1 EP2789859A1 (fr) 2014-10-15
EP2789859B1 true EP2789859B1 (fr) 2016-09-14

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771086A (fr) * 1934-01-19 1934-09-29 Perfectionnements apportés aux équipements de pompes pour trous de sondage ou forage
US20030217848A1 (en) * 2002-05-23 2003-11-27 Baker Hughes Incorporated System and method for flow/pressure boosting in a subsea environment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064814B (de) * 1951-08-06 1959-09-03 Progress Verkauf G M B H Der M Elektrische Fasspumpe
DE3115714A1 (de) * 1981-04-18 1982-11-04 Flux-Geräte GmbH, 7000 Stuttgart Fasspumpe mit elektrischem antriebsmotor
DE102006006253A1 (de) * 2005-02-25 2006-08-31 Grün-Pumpen GmbH Pumpwerk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771086A (fr) * 1934-01-19 1934-09-29 Perfectionnements apportés aux équipements de pompes pour trous de sondage ou forage
US20030217848A1 (en) * 2002-05-23 2003-11-27 Baker Hughes Incorporated System and method for flow/pressure boosting in a subsea environment

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EP2789859A1 (fr) 2014-10-15

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