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EP2721301B1 - Pompe submersible et methode d'assemblage d'une pompe submersible - Google Patents

Pompe submersible et methode d'assemblage d'une pompe submersible Download PDF

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Publication number
EP2721301B1
EP2721301B1 EP12724979.5A EP12724979A EP2721301B1 EP 2721301 B1 EP2721301 B1 EP 2721301B1 EP 12724979 A EP12724979 A EP 12724979A EP 2721301 B1 EP2721301 B1 EP 2721301B1
Authority
EP
European Patent Office
Prior art keywords
pump
insert
submersible pump
casing
clamping
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.)
Active
Application number
EP12724979.5A
Other languages
German (de)
English (en)
Other versions
EP2721301A1 (fr
Inventor
Michael Fath
Christoph Jäger
Boris Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB AG
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Priority to RS20161153A priority Critical patent/RS55486B1/sr
Publication of EP2721301A1 publication Critical patent/EP2721301A1/fr
Application granted granted Critical
Publication of EP2721301B1 publication Critical patent/EP2721301B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
    • 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
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • 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
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/02—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the invention relates to a submersible pump and a method for producing a submersible pump, comprising a housing having a suction-side inlet opening, a pressure-side outlet opening and an opening for electrical lines, an electronics unit, an electric motor, a pressure chamber and a pump unit.
  • Submersible pumps are a type of pump that has been designed for different applications and tailored to the respective requirements. It is essential to immerse the pump in the fluid to be pumped. A special design requires that the pump can be placed in a wellbore. Since wellbores, particularly very deep ones, are very expensive, fitting to the wellbore is an essential feature of such a pump.
  • the DE 297 11 534 U1 describes a kit for submersible pumps, which is suitable for larger wells.
  • a submersible pump in which the inlet, pump and outlet are arranged axially in a row.
  • the individual components are surrounded by a common shell, which is subdivided into a first area, which encloses the motor and a second area, which encloses the pump. Both areas are connected by a connecting element, by which both the distance of the components from the inner wall of the housing and the axial position is fixed.
  • a generic submersible pump in which the essential individual components of the pump are arranged axially.
  • the suction-side inlet cover, the pump impeller, the motor and the pressure-side outlet cover are housed in a tubular sheath, wherein the conveyed fluid is passed through a gap between the motor and the housing to the pressure-side outlet opening.
  • the gap between the tubular jacket and the motor housing is defined by an elastomeric padding.
  • the motor is mounted on the suction inlet cover, which also contains the pump impeller.
  • the pressure-side outlet cover is connected only to the tubular casing,
  • the object of the invention is to provide a generic submersible pump, which allows easy installation and repair of the submersible pump.
  • the solution provides a submersible pump according to claim 1, wherein the electronics unit, the electric motor, the pressure chamber and the pump unit are preassembled for use, wherein the preassembled insert is supported at one end of the housing and at the opposite end of the housing an axial clamping and fastening system is provided.
  • the electronics unit may include both power electronics and signal electronics.
  • the inventive construction of the submersible pump makes it possible to align the pre-assembled components before they are joined in the enclosing housing. Furthermore, it is possible to make the enveloping housing in one piece or in one piece, whereby the seal against ingress of fluid is improved. Due to the clamping and fastening system, it is possible to provide the insert with a bias.
  • the tensioning and fastening system can be released. This has the advantage that the insert can be removed from the enclosing housing for inspection purposes. Then it can be reused and fixed again in the housing by the clamping and fastening system.
  • all components of the insert are provided with fixed or releasable devices for supporting against the housing, in particular for radial support.
  • the devices are used to transfer heat from the motor to the enclosing housing and at the same time support the mounting kit on the housing with a precisely defined distance, whereby a displacement of individual components during operation of the pump is prevented.
  • the motor is a synchronous motor, in particular a permanent magnet tipped synchronous motor.
  • These motors are energy efficient, easy to operate and robust. If the submersible motor pump is used as a borehole pump, then it is urgently necessary that the technology used is robust, since the pump must be lifted out of the borehole for repairs.
  • the pump is designed as a centrifugal pump.
  • the advantage here is that large delivery volumes with variable delivery are possible. It is also possible with centrifugal pumps, mitzu terminaln small amounts of sand.
  • the pump is designed as a positive-displacement pump, in particular as an eccentric screw pump. This self-priming pump allows high delivery heights and variable delivery volumes in low pulsation operation.
  • a pressure line is provided on the pressure-side outlet opening, into which a holder for a pulling means of the submersible pump is integrated, in particular the outlet opening itself can act as a holder.
  • the pump can be lifted out of the borehole on the traction means. This simplifies the installation of the pump on site, especially in a borehole.
  • the object of the invention is to provide a method for producing a submersible pump of the type described above.
  • the solution provides a method according to claim 9 for the manufacture and assembly of a submersible pump of the type described above, wherein in a first step, an insert from an electronics unit, an electric motor, a pressure chamber and a pump unit is pre-assembled, in a second step, the use in a Housing is added, wherein the insert is centered in the housing, and in a third step, the use of a clamping and / or fastening system is clamped and fastened in the housing.
  • pre-assembly an exact alignment of the individual components is possible before the insert is joined in the enclosing housing.
  • the means for maintaining a fixed distance between the insert and the enclosing housing center the insert and the bearing on the pressure side and defines the exact position of the insert.
  • a bias voltage can be brought to the use.
  • the fastening system holds the insert in the enveloping housing. If a Taperlock fastening system is used, then the clamping set be braced freely at the suction end of the enclosing tube without further precautions must be taken there, such as holes or threads.
  • the attachment of the insert can be solved. If the length of the insert has been slightly changed during the revision, the insert can be fixed again in the enclosing housing with the same fastening system.
  • the Fig. 1 shows a submersible motor pump according to the invention 1.
  • a housing 2 is at the upper end indicated a drive 3, which is connected via a coupling element 4 with the actual pump element.
  • the pump element is formed in the example shown as an eccentric screw pump, consisting of a stator 5 and a rotor 6, which are represented by a metal-elastomer pairing or a plastic-elastomer pairing.
  • a detail is marked, which comprises the clamping system 7.
  • the eccentric screw pump allows continuous water delivery, the pump can be self-priming.
  • the technology of Stator 5 and Rotor 6 is very robust and can also be used in abrasive, for example sandy, environment.
  • the coupling element 4 designed as a long rod makes it possible to establish a connection between the eccentric rotor 5 and the drive 3.
  • the drive 3 is typically an electric motor used. To achieve a high power density, one with Permanent magnet equipped synchronous motor used. This results in a low construction dimension, whereby the cost of a deep well well can be significantly reduced.
  • the individual components of the submersible pump are introduced from below into the housing 2.
  • the housing 2 which is already connected to the rod as the coupling element 4 and the rotor 5.
  • the clamping system 7 according to the invention, in the form of a Taperlock clamping system, is provided.
  • the Fig. 2 shows the details of the axial clamping and fastening system of the submersible pump.
  • a contact piece 8 encloses the stator 5 and provides at the lower end of the stator 5 a contact surface for the other components of the clamping system 7.
  • a contact piece 8 includes a snap element 9, which is firmly connected by a latching function with the contact piece 8 and is supported against the housing 2.
  • Adjacent to the snap element 9, a conical, inner clamping ring 10 is arranged, which forms the taper bushing.
  • an outer clamping ring 11 is arranged, which is also provided with a thread, so that it can be clamped to the inner clamping ring 10.
  • Both clamping rings are braced so that they are supported against the snap element 9, ie also against the housing 2.
  • a feather key 12 is additionally provided.
  • recesses 13 are provided on the outer clamping ring, which serve for applying a suitable tool for bracing. The design with recesses 13 makes it possible to create a predefined, simple and cost-effective approach to tools, which significantly increases the reliability and ease of installation.
  • the Fig. 3 shows an isometric view of the submersible pump 1, in particular the detail of the clamping system 7 from Fig. 1 is shown.
  • the stator 5 and the rotor 6 are shown in the housing 2.
  • the snap element 9 connects. This is firmly connected to the pressing piece 8.
  • the conical inner clamping ring 10 and thus connected for example by screwing outer clamping ring 11 is shown.
  • the illustration illustrates the attachment points for a tool for screwing the outer clamping ring 11 into the inner clamping ring 10, which are clamped together due to the conical shape of the inner clamping ring 10, whereby they bear against the housing 2 radially.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (9)

  1. Pompe plongeante (1) comprenant un corps (2) avec un orifice d'entrée côté aspiration, un orifice de sortie côté pression et un passage pour des conduits électriques, une unité électronique, un moteur électrique, un compartiment sous pression et une unité de pompage,
    l'unité électronique, le moteur électrique, le compartiment sous pression et l'unité de pompage pouvant être prémontés en un insert, l'insert prémonté étant assemblé dans le corps de sorte à être soutenu sur une extrémité du corps et sur l'orifice de sortie côté pression, il est prévu un conduit sous pression, le conduit sous pression étant conçu en tant que moyen de traction destiné à retenir la pompe submersible (1), caractérisée en ce que
    sur l'extrémité opposée du corps (2), il est prévu un système de serrage et de fixation (7) axial, le système de serrage permettant d'appliquer une précontrainte sur l'insert et le système de fixation précontraignant et maintenant l'insert dans le corps enveloppant.
  2. Pompe plongeante (1) selon la revendication 1, caractérisée en ce que le système de serrage et de fixation (7) est détachable du corps (2).
  3. Pompe plongeante (1) selon la revendication 1 ou 2, caractérisée en ce que le système de serrage et de fixation (7) est réalisé en tant que douille de serrage Taperlock.
  4. Pompe plongeante (1) selon la revendication 1, 2 ou 3, caractérisée en ce que des composants de l'insert sont munis de dispositifs destinés au soutien contre le corps (2), notamment au soutien radial.
  5. Pompe plongeante (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que dans la région de l'orifice de sortie côté pression, il est prévu un palier destiné au soutien de l'insert, notamment à un soutien centré.
  6. Pompe plongeante (1) selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'en tant qu'entraînement (3), il est prévu un moteur synchrone, notamment un moteur synchrone équipé d'un aimant permanent.
  7. Pompe plongeante (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la pompe est une pompe centrifuge.
  8. Pompe plongeante (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la pompe est une pompe volumétrique, notamment une pompe à vis sans fin excentrique.
  9. Procédé destiné à assembler une pompe plongeante (1) selon l'une quelconque des revendications 1 à 8, dans une première étape étant prémonté un insert composé d'une unité électronique, d'un moteur électrique, d'un compartiment sous pression et d'une unité de pompage, dans une deuxième étape, l'insert étant assemblé dans un corps (2), l'insert étant centré dans le corps (2) et dans une troisième étape, l'insert étant contraint et fixé dans le corps (2) par un système de serrage et de fixation (7).
EP12724979.5A 2011-06-17 2012-05-30 Pompe submersible et methode d'assemblage d'une pompe submersible Active EP2721301B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20161153A RS55486B1 (sr) 2011-06-17 2012-05-30 Potapajuća pumpa i postupak za sastavljanje potapajuće pumpe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077777A DE102011077777B3 (de) 2011-06-17 2011-06-17 Tauchpumpe und Verfahren zum Zusammenbau einer Tauchpumpe
PCT/EP2012/060096 WO2012171792A1 (fr) 2011-06-17 2012-05-30 Pompe submersible et procédé d'assemblage d'une pompe submersible

Publications (2)

Publication Number Publication Date
EP2721301A1 EP2721301A1 (fr) 2014-04-23
EP2721301B1 true EP2721301B1 (fr) 2016-10-12

Family

ID=46201621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12724979.5A Active EP2721301B1 (fr) 2011-06-17 2012-05-30 Pompe submersible et methode d'assemblage d'une pompe submersible

Country Status (10)

Country Link
US (1) US9605679B2 (fr)
EP (1) EP2721301B1 (fr)
CN (1) CN103827504B (fr)
BR (1) BR112013030162B1 (fr)
DE (1) DE102011077777B3 (fr)
DK (1) DK2721301T3 (fr)
ES (1) ES2609855T3 (fr)
RS (1) RS55486B1 (fr)
WO (1) WO2012171792A1 (fr)
ZA (1) ZA201309468B (fr)

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DE102014102126A1 (de) * 2014-02-19 2015-08-20 Netzsch Pumpen & Systeme Gmbh Pumpsystem zum Fördern von viskosen oder teilviskosen Medien aus einem Bohrloch sowie Verfahren zur Entnahme einer Exzenterschneckenpumpe aus einem Bohrloch
JP7043393B2 (ja) 2015-09-03 2022-03-29 フルイド ハンドリング リミティド ライアビリティ カンパニー 水中ポンプの保守性を向上させる水中ポンプモータハウジング
CN108468646B (zh) * 2018-05-24 2024-01-19 劳伦斯泵业机械(北京)有限公司 应用于地面上的潜水泵
CN214577769U (zh) * 2021-04-06 2021-11-02 台州佳迪泵业有限公司 一种深井泵
CN120384724B (zh) * 2025-04-28 2025-11-25 盐城市鑫源石化机械有限公司 一种卡瓦式井下节流器及一体化防砂打捞装置

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CA2444648A1 (fr) * 2002-12-06 2004-06-06 Tesco Corporation Dispositif d'ancrage pour outil de puits de forage
DE102004013380A1 (de) * 2004-03-17 2005-10-06 Wilo Ag Pumpenlagerung in einem Druckmantel
US7431095B2 (en) * 2005-10-04 2008-10-07 Baker Hughes Incorporated Non-tubing deployed well artificial lift system
US7874368B2 (en) * 2007-09-26 2011-01-25 National Oilwell Varco, L.P. Insertable progressive cavity pump systems and methods of pumping a fluid with same
CA2645631A1 (fr) * 2007-11-30 2009-05-30 Stellarton Technologies Inc. Systeme submersible electrique de pompage a corps creux pour fond de puits

Also Published As

Publication number Publication date
CN103827504B (zh) 2016-08-17
US9605679B2 (en) 2017-03-28
BR112013030162A2 (pt) 2017-03-14
BR112013030162B1 (pt) 2021-05-11
ES2609855T3 (es) 2017-04-24
WO2012171792A1 (fr) 2012-12-20
DK2721301T3 (da) 2017-01-30
EP2721301A1 (fr) 2014-04-23
CN103827504A (zh) 2014-05-28
US20140134013A1 (en) 2014-05-15
RS55486B1 (sr) 2017-04-28
BR112013030162A8 (pt) 2018-07-31
DE102011077777B3 (de) 2012-07-26
ZA201309468B (en) 2014-08-27

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