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WO2019108160A1 - Installation de pompage submersible électrique - Google Patents

Installation de pompage submersible électrique Download PDF

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Publication number
WO2019108160A1
WO2019108160A1 PCT/UA2018/000072 UA2018000072W WO2019108160A1 WO 2019108160 A1 WO2019108160 A1 WO 2019108160A1 UA 2018000072 W UA2018000072 W UA 2018000072W WO 2019108160 A1 WO2019108160 A1 WO 2019108160A1
Authority
WO
WIPO (PCT)
Prior art keywords
linear
submersible
electric motor
unit
linear electric
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.)
Ceased
Application number
PCT/UA2018/000072
Other languages
English (en)
Russian (ru)
Inventor
Дмитрий Валерьевич ХАЧАТУРОВ
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.)
Individual
Original Assignee
Individual
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
Priority claimed from UAA201711617A external-priority patent/UA118520C2/uk
Application filed by Individual filed Critical Individual
Priority to EA202091017A priority Critical patent/EA202091017A1/ru
Publication of WO2019108160A1 publication Critical patent/WO2019108160A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth

Definitions

  • Linear electric submersible pumping unit The invention relates to the oil industry, in particular, to installations with volumetric pumps driven by submersible linear electric motors, and can be used to extract reservoir fluids from a limited flow of wells from large depths.
  • LPVED linear submersible valve motor
  • Known LPVED contain inductors, forming a fixed part of the stator, and the movable part of the slide, formed by permanent magnets located in the bore of the stator.
  • the specified slider is connected to the pump plungers and provides for the transmission of reciprocating motion. Changing the polarity of the voltage in the stator winding, ensures the forward movement of the slider in the longitudinal direction.
  • This type of equipment has found wide application, mainly in small diameter wells with a low flow rate of less than 25 m / day, and as the number of such wells increases every year, such installations are becoming more and more popular. For these reasons, increasingly high requirements for manufacturability, maintainability and reliability of submersible pumping units.
  • a device that comprises a submersible borehole pump consisting of a stationary cylinder and a movable plunger, as well as a submersible motor connected to the borehole pump, by means of a threaded or flange connection.
  • the specified engine connected to the plunger of a submersible borehole pump, and configured to form a reciprocating movement of the plunger.
  • an elastic diaphragm compensator which is made in the form of a bubble, having a diameter in the middle part greater than the diameter of each end part, with one end of the diaphragm connected to the stator base, and its other end connected to the coupling connecting the electric motor to the compensator.
  • the disadvantages of the described technical solution include the absence of a telemetry unit and control elements of the motor, which can lead to its inefficient operation.
  • well pumping unit installed in the wellbore, containing a submersible part, comprising a plunger pump placed in a single housing, equipped with pressure valves, and a gravity gas separator, above which a check valve block is placed, containing a connecting sleeve for mounting a well pumping unit to the tubing string, as well as a submersible linear electric motor installed under the plunger pump, including a stationary part in the form of a stat ora with three-phase winding and installed temperature sensors, and a movable part located in the stator bore in the form of a slider, made with the possibility of reciprocating motion relative to the stator.
  • a telemetry unit is placed under the linear motor, including pressure and temperature sensors of the well fluid, a vibration sensor, an inclinometer and a measuring unit connected to temperature sensors installed in the linear motor and connected to the ground control unit via a zero star windings of the linear motor.
  • the design described above is a working model of a submersible pumping unit, which is currently in operation, the shortcomings of the described technical solution include the implementation of the design in a single package, which can complicate its operation and reduce manufacturability, as well as maintainability.
  • the technical problem to which the invention is directed is the creation of a linear electro-immersion pumping unit with high performance, increased reliability and maintainability, as well as made with the possibility of operation in wells of different diameters and productivity.
  • the technical result achieved from the implementation of the claimed technical solution is to unify the design, reduce its size, as well as improve the manufacturability, which allows to manufacture individual modules of the pump unit regardless of the completion of the assembly stages and lead to significant savings in working time with increasing production volumes . Also, the modularity of the design significantly increases its performance, in particular, maintainability, allowing you to replace the faulty module and resume operation of the pumping unit as soon as possible.
  • the linear electro-submersible pumping unit is made in the form of modules enclosed in separate enclosures connected to each other by means of a detachable connection with the formation of a single oil-filled system.
  • This installation includes a linear motor module connected by a cable line to a ground control unit, by sealed plug connection.
  • the plug-in connection is made outside the current lead head on an elongated conductor.
  • a hydraulic compensator module is installed, which includes an elastic diaphragm, the internal cavity of which is in fluid communication with the stator cavity of the linear electric motor by means of a connecting channel passing through the attachment points of the elastic diaphragm.
  • the specified channel is part of the oil line of the refueling of the linear electro-immersion pumping installation, in the cavity of which, wires of communication with the ground control unit are laid. Wires are connected to the submersible module of the telemetry system with implemented hardware-software isolation testing mode by the ground control unit.
  • the hydrocompensator module contains a hydromechanical damper of the lower extreme point of the moving part of the linear actuator, which is an element of the damping system, which also contains the damper of the upper extreme point placed in a separate housing and installed between the linear motor module and the pump unit.
  • the linear electrophorean pumping unit a plug-in connection of modules, is made according to the principle of a flange connection, consisting of threaded bushings mounted at the ends of the abutting modules.
  • one of the sleeves contains a flange, and the second is the counterpart, with pre-installed studs.
  • the telemetry module is equipped with a set of interchangeable flanges with mounting holes located depending on the case diameter of the electric submersible pump unit, the diameter of the mounting hole of the flange being constant and corresponding to the diameter of the unit case.
  • the module of the telemetry system comprises a filtering-switching device including a low-pass filter with a switching element of the control system and is connected to a ground control unit containing a low-pass filter installed on the communication line with the secondary winding of a three-phase transformer and made with the ability to protect the system from high voltage.
  • the ground unit contains a switching device, made with the possibility of changing the polarity of the voltage supplied to the line for measuring the insulation resistance, associated with a voltage-relief resistor proportional to the current of the communication line.
  • the elastic diaphragm of the hydraulic compensator module at the attachment points, is hermetically fixed by means of a composite collar and protected from mechanical damage by means of a non-metallic insert designed to limit the deformations of the elastic diaphragm.
  • the elastic diaphragm of the module of the hydraulic compensator can be placed eccentrically with respect to the axis of symmetry of the linear electric submersible pumping unit.
  • the plug connection is made in the dimension of the pumping unit housing, defined by its largest cross section and includes the plug socket, which is outside the current lead head, on the extended conductor.
  • the receptacle consists of a sealed enclosure with an inwardly fixed and fixed by means of sealing polymer elements, at least one conductive core, the free end of an elongated conductor installed in the current lead head with two-sided sealing, b by crimping deformable elements.
  • the hermetic plug-in connection is implemented within the platform, recessed relative to the surface of the transition coupling, installed between the outlet of the pumping unit and the inlet of the tubing.
  • the damping system includes at least one hydromechanical device for compensating the dynamic load, installed in at least one of the extreme points of travel of the moving part of the linear actuator.
  • the specified device consists of a cylindrical cavity filled with working fluid with overflow openings, as well as a movable hollow piston and a counter supporting element, with an elastic element installed between them.
  • the specified cylindrical cavity made with the possibility of filling the working fluid from the environment of the pumping unit.
  • bypass holes of the hydromechanical device are spaced along the length of its cylindrical cavity and are made with the possibility of slowing down the stroke of the piston, as they alternately overlap the body of the piston and increase the resistance to outflow of the working fluid.
  • the hydromechanical device installed at at least one of the extreme points of travel of the movable part of the linear submersible electric motor is configured to provide communication indicated by the movable part with the plunger of the pump unit by means of a connecting element installed in the piston cavity.
  • the specified movable part of the linear submersible electric motor is connected to the plunger of the pump unit by means of a connecting link, consisting of a friction pair formed by a hollow body element with a movable rod inside.
  • the diameter of the movable rod is equal to the diameter of the movable part of the linear submersible electric motor, while the longitudinal dimensions and stroke of the movable rod are selected so as to ensure at least partial positioning of the movable part of the linear submersible electric motor in the cavity of the housing element of the friction pair. Compensating thereby the radial loads on the moving part of the linear electric motor, ensuring centering and sealing of the specified moving part.
  • the movable part of a linear submersible electric motor consists of a set of permanent magnets, separated by ferromagnetic inserts - magnetic field concentrators, between which copper alloy bushes are installed over permanent magnets. These sleeves reduce the friction coefficient by transferring a part of the material to the inner surface of the guide tube as they wear out.
  • the guide tube forms with the moving part of the linear electric motor a friction pair with a reduced friction coefficient.
  • the hardness of the guide tube is higher than the hardness of ferromagnetic inserts and copper alloy bushings.
  • the specified guide tube is made of a non-magnetic material, while its necessary hardness is achieved by surface hardening.
  • Fig.1 linear electrophoreses pumping unit general view
  • figure 2 submersible part of the pumping unit
  • 4 is a block diagram of a measuring telemetry system
  • 5 is a hydromechanical damper of the lower extreme point
  • Fig.8 is a variant of flange connection of the submersible module of the telemetry system with the pumping unit case;
  • figure 10 cable connections linear electrophoreses pumping unit
  • Fig.14 structural elements of the module linear motor in the section.
  • the inventive linear submersible pump installation contains ground 1 (figure 1) and submersible 2 parts.
  • the ground part is represented as a ground control unit 3, made in the form of a three-phase high-frequency inverter-regulator and an output transformer connected to a linear submersible motor 4 by a cable line 5, through a sealed plug connection 6, which is outside the current lead head on the elongated conductor 7.
  • the load part 2 (Fig. 1, 2) is formed from a linear valve motor 4, a hydrocompensator 8, a damping system 9 connected to the pumping unit 10 and the immersion module of the telemetry system 11.
  • the pumping unit presented in the form of a double-action plunger pump with built-in filters and a gravitational gas separation zone.
  • the immersion module 11 of the telemetry system is installed in the lower part of the pumping unit, includes a set of sensors measuring the parameters of the well and the motor connected to the ground control unit through the zero point of the windings of the linear motor connected by a star.
  • the module of the hydraulic compensator 8 (FIG. 3) is installed at the base of the electric motor, includes an elastic diaphragm 12 with the guide tube 13 placed inside, the movable part of the linear electric motor.
  • the elastic diaphragm 12 at the points of attachment is hermetically sealed by means of the composite collar 14 and protected from mechanical damage by means of non-metallic inserts 15 made with the possibility of limiting its deformations.
  • the elastic diaphragm of the hydraulic compensator module can be placed eccentrically with respect to the axis of symmetry of the linear electro-immersion pumping unit.
  • the internal cavity of the specified diaphragm is in fluid communication with the cavity of the stator 16 of the linear motor 4 through the connecting channel 17, passing in the attachment points of the elastic diaphragm.
  • the specified channel is part of the oil line 18 refueling linear electric submersible pumping unit.
  • the wire 19 connection with the ground control unit.
  • Wires are connected to a submersible module 1 1, a telemetry system or other electrical equipment installed in the lower part of a linear electric motor.
  • a hardware-software isolation test mode is implemented by the ground control unit.
  • the immersion module of the telemetry system contains a set of measuring sensors 20, a voltage stabilizer 21, a resistor 22, an information acquisition and transmission device 23, an electronic controlled switch 24 connected to the motor windings through a resistor 25 and a filtering and switching device 26 including a low-pass filter with a switching element management system.
  • the immersion telemetry module is connected to a ground control unit 3 containing a low-pass filter 27, which is installed on the communication line with the secondary winding of a three-phase transformer 28 and configured to protect the system from high voltage.
  • the ground unit contains the power source 29, the device 30 receiving and processing information.
  • the ground unit also contains a switching device 31, made with the possibility of changing the polarity of the voltage supplied to the line for measuring the insulation resistance, associated with the resistor 32 of the voltage proportional to the current of the communication line.
  • the damping system is integrated into the design of the pumping unit, whereby it is possible to ensure its reliable and uninterrupted operation.
  • the hydrocompensator module 8 contains a hydromechanical damper 33 (FIG. 3) of the lower extreme point of the stroke of the moving part of the linear actuator, which is shown in detail in (FIG. 5).
  • the specified hydromechanical damper is part of the damping system, which also contains a damper 34 (6) upper extreme point, placed in a separate case and installed between the module of the linear motor 4 and the pumping unit 10 (figure 2).
  • the hydromechanical devices used in the construction of the damping system contain a cylindrical container 35, 351 filled with working fluid with bypass openings 36, 36 b as well as a movable hollow piston 37, 37 ] with a counter supporting element 38, 38c and an elastic element 39 installed between them.
  • cylindrical cavity 35, 35 is made with the possibility of filling the working fluid from the environment of the pumping unit.
  • bypass holes 36, 36 ] hydromechanical device spaced along the length of its cylindrical cavity 35, 35 j and made with the possibility of slowing down the stroke of the piston 37, 37 ] , as they alternately overlap the body of the piston and increase the resistance to outflow of the working fluid.
  • a hydromechanical device installed at at least one of the extreme points of travel of the moving part of the linear submersible electric motor, in particular the uppermost point made with the possibility of providing the connection specified by the moving part with the plunger of the pump unit 10, by means of a connecting element installed in the piston cavity.
  • the cavity of the piston 37 ] and the counter supporting element 38 ] are associated with the formation of a cavity in which the connecting element of the movable part of the linear electric motor 4 is installed with the plunger of the pump unit 10.
  • An additional restraining force is created by the elastic element 39, which also serves as the return mechanism of the piston 37, 37 ] .
  • Re-filling the cylindrical cavity 35, 35 ] , hydromechanical device occurs during the reverse translational movement of the piston through the bypass holes 36, 36 ] .
  • a guide tube 13 of the movable part is installed in the cavity of the piston 37 linear motor.
  • a column of fluid located in the cavity of the guide tube 13 installed in the cavity of the piston 37 is discharged through the holes 40 in the lower part of the indicated guide pipe, while the cavity of the piston 37 narrows in relation to the diameter the guide tube 13, pre-slows down the moving part, before contact with the said piston 37.
  • the described modules of the pumping unit are connected by means of a detachable connection, made on the principle of a flange connection (FIG. 7), consisting of interfaced modules installed at the ends, threaded bushings 42, 43.
  • one of the bushings 42 contains a flange 44, and the second 44 is the counterpart with pre-studs 45.
  • the module of the telemetry system is made with the ability to install various interchangeable flanges 46 (Fig.8) with mounting holes 47 (Fig.9), located depending on the diameter of the body el
  • the submersible pump installation, the diameter of the mounting hole 48 of the flange is made constant and corresponds to the diameter of the housing 49 of the module of the telemetry system.
  • connection of the ground 1 and submersible 2 parts of the pump unit is provided by means of a cable line 5 with a plug connection 6.
  • the specified connection is made in the dimension of the pump unit housing, defined by its largest cross section.
  • the plug connection (FIG. 10) contains, outside the current lead head 50 (shown in detail in FIG. 12) of the electric motor 4, a plug socket 51 (FIG. 1-1) on the extended conductor 7.
  • the receptacle consists of a sealed enclosure 52 with at least one conducting core fixed inside and fixed by means of sealing polymeric elements 53 54. The free end of the elongated conductor is installed in the head of the current lead 50 (Fig.
  • a sealed plug connection is arranged within pad 59, recessed relative to the surface of the transitional coupling 60 (figure 10), installed between the output of the pump unit and the inlet of the tubing string 61 (figure 1).
  • the movable part 62 (Fig. 13) of the linear submersible electric motor 4 is connected to the plunger 10 of the pump unit by means of a connecting link 63 consisting of a friction pair formed by a hollow body element 64 with a movable rod 65 inside, the diameter of which is equal to the diameter of the movable part 62 of the linear submersible electric motor, in this case, the longitudinal dimensions and stroke of the movable rod 65, are chosen in such a way that would ensure at least partial positioning of the movable part 62 of the linear submersible electric motor 4 into the cavity body member 64 of the friction pair.
  • the specified pair of friction perform sufficiently necessary precision machining of contact surfaces.
  • This embodiment allows you to create a labyrinth seal area, and to ensure the centering of the moving part of the electric motor with the compensation of radial loads, as well as protection from ingress of mechanical impurities into the cavity of the guide tube of the moving part of the linear actuator.
  • the movable part 62 (FIG. 14) of the linear submersible electric motor 4 consists of a plurality of permanent magnets 66, separated by ferromagnetic inserts - magnetic field concentrators 67, between which copper alloy sleeves 68 are installed over the permanent magnets.
  • the sleeve 68 may be made of a polymeric material. These bushings protect permanent magnets from mechanical damage, as well as reducing the friction coefficient, by transferring a part of the material to the inner surface of the guide tube 13, as they wear out.
  • the guide tube forms with the movable part 62 of the linear submersible electric motor 4 a friction pair with a reduced friction coefficient.
  • the hardness of the guide tube 13 is higher than the hardness of the ferromagnetic inserts 67 and the copper alloy bushings 68.
  • Said guide tube 13 is made of a non-magnetic material, while its necessary hardness is achieved by surface hardening.
  • the implementation of the described technical solution contributes to the achievement of the technical result, ensuring the unification of the design with improved manufacturability, through its implementation of easily removable interchangeable modules. Also described the implementation of the cable plug connection and the module of the hydraulic compensator helps to reduce the size of the pump unit.
  • the implementation of the telemetry system provides an increase in the level of protection against high-voltage interference by installing filtering devices in the surface and immersion units, moreover, the application of the described technical solution allows to increase the reliability of operation by providing protection against high voltage and hardware-software implementation isolation test mode ground block.
  • the device described damping system integrated into the design of a submersible pumping unit without a significant increase in its dimensions, and the implementation of the movable part of a linear actuator with elements that reduce the coefficient of friction, reduces the dynamic loads on the structural elements of the electric motor, and also increases its service life.

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

Abstract

L'invention concerne la branche de la production pétrolière et notamment des installations et pompes à action volumique mises en mouvement par des moteurs électriques linéaires submersibles ; elle peut servir dans l'extraction de liquides de formation d'un ensemble de trous de forage à faible débit depuis des profondeurs importantes. La mise en oeuvre de cette solution technique assure l'unification de la construction avec une meilleure technicité de fabrication grâce à sa réalisation à partir de modules interchangeables facilement amovibles. La réalisation de la solution technique de l'invention permet de réduire les dimensions de l'installation de pompage. La réalisation du système télémétrique selon la variante de l'invention permet d'assurer un niveau de protection plus élevée contre les parasites haute tension et la haute tension avec une mise en oeuvre logicielle et matérielle du régime de vérification de l'isolation par le bloc terrestre du système télémétrique. La mise en oeuvre de cette construction permet de réduire les charges dynamiques sur les éléments de la construction du moteur électrique et favorise sa durée de fonctionnement.
PCT/UA2018/000072 2017-11-28 2018-07-11 Installation de pompage submersible électrique Ceased WO2019108160A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EA202091017A EA202091017A1 (ru) 2017-11-29 2018-07-11 Линейная электропогружная насосная установка

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
UAA201711617 2017-11-28
UAA201711617A UA118520C2 (uk) 2017-11-28 2017-11-28 Спосіб і система демпфірування заглибної насосної установки з лінійним вентильним електродвигуном
UAA201711687 2017-11-29
UAA201711687 2017-11-29

Publications (1)

Publication Number Publication Date
WO2019108160A1 true WO2019108160A1 (fr) 2019-06-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/UA2018/000072 Ceased WO2019108160A1 (fr) 2017-11-28 2018-07-11 Installation de pompage submersible électrique

Country Status (1)

Country Link
WO (1) WO2019108160A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831353A (en) * 1994-10-17 1998-11-03 Bolding; Vance E. Modular linear motor and method of constructing and using same
EA200601925A1 (ru) * 2004-09-17 2007-02-27 Чуньго Фэн Погружное насосное устройство возвратно-поступательного действия с числовым программным управлением
RU2615775C1 (ru) * 2015-12-24 2017-04-11 Общество с ограниченной ответственностью "РУССКИЕ СТАНДАРТЫ МАШИНОСТРОЕНИЯ" Скважинная насосная установка
US20170241246A1 (en) * 2014-08-29 2017-08-24 Moog Inc. Linear motor for pumping

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831353A (en) * 1994-10-17 1998-11-03 Bolding; Vance E. Modular linear motor and method of constructing and using same
EA200601925A1 (ru) * 2004-09-17 2007-02-27 Чуньго Фэн Погружное насосное устройство возвратно-поступательного действия с числовым программным управлением
US20170241246A1 (en) * 2014-08-29 2017-08-24 Moog Inc. Linear motor for pumping
RU2615775C1 (ru) * 2015-12-24 2017-04-11 Общество с ограниченной ответственностью "РУССКИЕ СТАНДАРТЫ МАШИНОСТРОЕНИЯ" Скважинная насосная установка

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