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SYSTEM SUPPORTING VARIABLE SPEED DRIVE

System supporting variable speed drive comprising a three-sided service cabinet embodiment which is a vertically oriented rectangular parallelepiped and configured to provide an ability to installing tools for cooling, filtration, control, indication, power equipment elements and their connections, and includes a cell for installing a power connection and a cell for installing a measurement equipment on opposite sides.

The cabinet comprising two heat exchange circuits limited by the basic elements of the cabinet embodiment, the first of which is configured to interact with an external environment and with the second heat exchange circuit, wherein the second heat exchange circuit which is configured without an ability to interact with the external environment includes a sealed cell for installing power electronics and the cell for installing a power connection and the cell for installing a measurement equipment, where connection for heat exchange along the second circuit between said cells is provided through holes in cells frames.

A telemetry system comprises a surface unit, a downhole unit and an alternative voltage source in connection through independent phase with the downhole unit.

The surface unit comprises a low-pass filter on the input of the surface unit to protect the telemetry system against overly high voltage. Also, the surface unit comprises a switch in connection with a voltage resistor configured to change the polarity of the voltage.

The downhole unit comprises a transformer, the primary winding of which includes low-pass filter configuration and the secondary winding sets an independent phase. Thermoelectric coolers are in connection through this independent phase with the alternating voltage source. The invention ensures the transmission of electricity to the thermoelectric coolers through the additional source.

The thermoelectric coolers cool electronic components, which are grouped in several groups depending on the maximum temperature limits of their utilization, so that the spread of the average of maximum temperature limits of their operation in each group is minimal. Cooled elements before installing the thermoelectric coolers may be placed on a viscous heat-conducting composition to create conditions for uniform cooling.

The downhole unit may be associated with a shaft or rotor bearings. This design can be implemented on the basis of the electrical circuit of the submersible and surface units. In this embodiment, the use of a pre-compressed inner and pre-stretched outer tubes ensures a uniform distribution of the resilient perception of pressure drops by the downhole unit associated with a shaft or rotor bearings. The use of spacers in the radial direction provides additional protection against the deformation of electronics.

According to another embodiment, the system further comprises at least one additional downhole unit connected with the downhole unit through an additional transmission line of data and energy. The additional downhole unit includes any of the well-known telemetries or multiple sensors or one sensor which performs from the minimal value of electricity that can be transmitted from the surface unit through the downhole unit. This embodiment provides an extension of the measurement zone. The downhole unit can collect and convert measurement parameters from the additional downhole unit. For convenience of mounting the downhole unit, the telemetry system may include a set of interchangeable threaded elements. The downhole unit and additional downhole unit may include sealed cable entries for installation of a conductive core and a set of deformable sealing elements configured with the possibility of radial and end sealing of the conductive core of the transmission line of data and energy under the pressure of a fluid.

The telemetry system may include a double downhole unit which duplicates its functions, both parts of which have identical design and do not communicate with each other.

In this embodiment the surface unit includes additional switches and resistors in connection through the transmission line of data and energy with the parts of the downhole unit to maintain voltage control of the downhole unit and to provide energy efficiency.

A method for oil extraction using a submersible linear electric motor, comprising:

  • entering parameters of a submersible linear electric motor and a pump associated with the motor into a microcontroller;
  • setting a maximum number of the motor reciprocating strokes based on the measurements of the motor temperature, the pump intake pressure, and electric current consumed by the submersible linear electric motor;
  • maintaining the maximum number of the motor reciprocating strokes in a range which limit does not exceed values of an emergency levels of the motor temperature and the pressure at the pump intake: increasing or decreasing in the number of the motor reciprocating strokes depending on cooling, normal operation, heating, or overheating of the motor; increasing or decreasing in the number of the motor reciprocating strokes depending on saturation, normal operation, initial decompression, or complete decompression at the pump intake;
  • determining metering values of the load and displacement of a plunger of the submersible pump associated with the linear submersible electric motor by taking the metering values from current sensors associated with the linear submersible electric motor: increasing or decreasing in the number of the motor reciprocating strokes depending on fullness of the plunger of the submersible pump, which is determined by the obtained metering values of the load and the displacement of the plunger of the submersible pump.

The method for oil extraction using a submersible linear electric motor is characterized in that the validity of the obtained metering values is determined by the microcontroller. Correspondence of the obtained metering values to a pre-formed range of valid metering values is set, whereby time intervals for changing the motor reciprocating strokes are adjusted taking into account conditions for obtaining the metering values. Formation of the range of the metering values is carried out based on a sample of previously obtained data which is formed taking into account a pre-set permissible error and the number of the values in the range of values. Every obtained value that repeats a previous value or exceeds the pre-set permissible error is not taken into account. Each new range of the metering values is formed after receiving several progressively metering values that exceed the pre-set permissible error with respect to a previous range of metering values and do not exceed the pre-set permissible error with respect to this range. The pre-set permissible error is maintained during the oil extraction process regardless of the average value of the obtained metering values of each range.

The method for oil extraction using a submersible linear electric motor is characterized in that the reproduction of the metering values of the load and displacement of the plunger of the submersible pump is carried out in a graphic form. The parameters of the submersible linear electric motor and the pump associated with the linear submersible electric motor are previously entered into the microcontroller.

A method of controlling a synchronous electric motor with permanent magnets comprising:

  • defining values characterizing applied voltage and phase
  • measuring phase currents with the conversion of obtained values into a d-q fixed reference system;
  • forming signals of Ud, Uq voltage from the mentioned values;
  • forming signals setting UA, UB, Uphase voltage by converting Ud, Uq voltage signals into Uα, Uβ;
  • supplying the signals setting UA, UB, Uphase voltage into a pulse generating unit of controlled voltage sources;
  • defining alterations of Iq reactive current relatively to specified Iqzad;
  • generating correction signals of UqKOP, UdKOP voltage according to the specified Iqzad value;
  • bringing the correction signals of UqKOP, UdKOP voltage to values necessary to form a set value of the Iqzad reactive current.
1. A double acting linear electrical submersible pump, including: a pump module with reversing and inlet valves, as well as two successively mounted plunger pairs of different diameters driven by a linear drive 2 and configured to displace an internal volume of a borehole fluid by means of the linear drive reciprocal motion, one of which is equipped with a traveling valve 8 and forms an annular cavity 9 with a pump module enclosure, providing that both plunger strokes are operational, distinctive in that an upper pumping plunger pair 6 is configured to collect a double volume of the borehole fluid sufficient for one operating cycle and contains a delivery traveling and an inlet fixed valves, which are equipped with directional pusher rod 25, moving by a flow of the borehole fluid, also a separator 15 of a downward 16 and an upward 17 flows of the borehole fluid with low 18 and high 19 pressure channels is installed above a cylinder 11 of the upper pumping plunger pair 6, with low-pressure channels arranged in fluid communication with a delivery port 20 of the borehole fluid from an annular space, containing a filtration zone 21 and a gravitational gas separation zone 22, a volume of which is greater or equal to a volume of an operating cycle of the pump module, while a plunger 10 of lower plunger pair 7 partially placed into the upper pumping plunger pair cavity forming an annular cavity 12 and capable of a labyrinth sealing of a movable part of the linear drive.
 
 
2. The double-acting linear electrical submersible pump distinctive in that pump module valves comprise a cylindrical body 27 with a locking element 26 inside of the cylindrical body 27, motion of which is enabled by means of a hollow pusher rod 25 with a plurality of recirculation holes 28 crossing a body of the pusher rod with an angle to its central axis, providing that an area of increased hydraulic resistance is arranged within a pusher rod cavity 29, which creates a hydraulic pressure necessary for a translation movement of the pusher rod.
 
 

3. A method of operation of a double-acting linear electrical submersible pump comprises:

a) lowering a pump module connected to a linear drive into a well;
b) filling it with a borehole fluid and displacing of the borehole fluid subsequently into a tubing string cavity by reciprocating of a plunger pair with a traveling valve, connected to a movable part of the linear drive, wherein both plunger strokes are operating;
c) performing the borehole fluid intake from an annular space during a downward stroke with open inlet and closed traveling valves of an upper pumping plunger pair, simultaneously filling a double volume of a cylinder of the upper pumping plunger pair required for one operating cycle;
d) pushing the borehole fluid through a filtration zone and a gravity gas separation zone arranged in a borehole fluid delivery port, provided that its volume is larger or equal to the volume of one operating cycle of the pump module;
e) displacing the borehole fluid from an annular cavity 12 located under the plunger of the upper pumping plunger pair 6 simultaneously during the downward stroke by means of its common volume arranged between the plunger pairs and an annular cavity 9 connected therewith, located between a pump module enclosure 3 and an outer surface of a upper pumping plunger pair cylinder 11, towards high-pressure channels 17 arranged within a separator 15 of downward 16 and upward 17 flows of the borehole fluid installed above the upper pumping plunger pair cylinder 11, and further through a reversing valve 4 into a tubing string;
f) inverting the borehole fluid flow on a reverse stroke, namely upwards with closed inlet 5 and open traveling 8 valves of the upper pumping plunger pair 6, under influence of a pressure created within the cavity 12 of the upper pumping plunger pair cylinder 11 towards the common volume 14 located between the plunger pairs;
g) feeding borehole fluid towards the tubing string by analogy with the downward stroke, herewith the traveling 8, inlet 5 and reversing 4 valves are closed by the straight oncoming flow of the borehole fluid.
1. A stator of a linear electrical submersible pump unit consisting of a plurality of sections comprising annular support members installed around a hollow guide pipe for a movable part of a linear drive, separating a set of coils forming a winding with a number of magnetic poles p>10, including a spatially combined composition of three-phase interdependent parts (windings) assembled into wye and delta connections, distinct in that structural elements of the stator are made of a material with a relative thermal expansion equal to a thermal expansion of elements of the movable part of the linear drive, while the sections of the stator are performed as a frame structure formed of C-shaped transverse ferromagnetic elements (space plates) with radial protrusions, as well as sectional and intersectional guide elements, installed in an axial direction, designed to provide a constant value of a polar pitch and a precise positioning of the stator elements relatively to each other.
 
 
2. A stator of a linear electrical submersible pump unit consisting of a plurality of sections comprising annular support members installed around a hollow guide pipe for a movable part of a linear drive, separating a set of coils forming a winding with a number of magnetic poles p>10, including a spatially combined composition of three-phase interdependent parts (windings) assembled into wye and delta connections, distinct in that the stator winding is made of the set of coils grouped together and constitutes a part of a magnetic system comprising a number of stator teeth different from a number of magnetic poles of the movable part of the linear electric motor by a two-fold value, while a resultant magnetic field with the number of magnetic poles of the stator is equal to the number of magnetic poles of the moving part, providing that coils in groups are arranged in pairs with an alternation of wye and delta connections, while forming an angle between vectors of a magnetic flux induction of 90 electrical degrees in each pair, and simultaneously coil groups of a same phase are shifted relatively to groups of coils of other phases by 120 electrical degrees.
 
 

3. A method for manufacturing a stator of a linear electric submersible pump unit, comprising

performing the stator of sections, structural elements of which are made of a material with a relative temperature expansion equal to a temperature expansion of elements of a movable part of a linear electric motor; executing the stator sections in a form of a frame structure made of C-shaped transverse ferromagnetic elements (space plates) with radial protrusions, as well as sectional and intersectional guide elements;
arranging between the C-shaped transverse elements a set of coils combined into groups and placed taking into account an alternating current direction within a same group;
forming the coils in the groups in pairs with alternation of wye and delta connections;
forming an angle between vectors of a magnetic flux induction of 90 electrical degrees in each pair;
shifting the coil groups of the same phase relative to the groups of coils of other phases by 120 electrical degrees.
1. A linear electric submersible pump unit connected to a surface control unit, comprising a linear submersible electric motor with a hydraulic compensator and a damping system, as well as a connected pump module with integrated filters and a gravity gas separation zone, a telemetry system that includes a set of measuring sensors of well and motor parameters connected with the surface control unit via a zero point of wye-connected linear motor windings, while the surface control unit is performed as a three-phase high-frequency regulating inverter and an output transformer connected to the linear submersible electric motor by means of an insulated three-wire cable, distinctive in that the pump unit is made in a form of separately enclosed modules connected to each other by means of a detachable connection forming a single oil-filled system comprising a linear motor module connected by a cable line to the surface control unit by means of a hermetically sealed plug and socket connection arranged beyond an input lead end on an extended electrical conductor, a hydraulic compensator module is installed at a base of the electric motor, comprising an elastic diaphragm, an internal cavity of which is performed in fluid communication with a linear electric motor stator cavity by means of a connecting channel passing at attachment points of the elastic diaphragm, while the said channel constitutes a part of an oil line, filling the linear electric submersible pump unit, comprising a cavity with wires of communication with the surface control unit connected to a submersible module of the telemetric system with implemented hardware-software mode of the surface control unit for checking an insulation, while the hydraulic compensator module comprises a hydromechanical damper of a lowest end point of a moving part stroke of a linear drive, which constitutes an element of a damping system, that also contains a damper of a highest end point placed in a separate enclosure and installed between the linear electric motor module and the pump module.
 
 
 
2. A linear electric submersible pump unit connected to a surface control unit, comprising a linear submersible electric motor with a hydraulic compensator and a damping system, as well as a connected pump module with integrated filters and the gravity gas separation zone and a telemetry system, containing a set of measuring sensors of well and motor parameters connected with the surface control unit via the zero point of wye-connected linear motor windings, while the surface control unit is performed as a three-phase high-frequency regulating inverter and an output transformer, connected to the linear submersible electric motor by means of an insulated three-wire cable, distinctive in that the damping system comprises at least one hydromechanical dynamic load compensating device installed in at least one of an endpoints of the movable part of the linear drive, that consists of a cylindrical chamber with drain ports filled with a working fluid and a movable hollow piston and reciprocating support member with a spring element installed therebetween, while the said cylindrical chamber is configured to be filled with the working fluid from an ambient medium of the pumping unit.
 
 
3. A linear electric submersible pump unit connected to a surface control unit, comprising a linear submersible electric motor with a hydraulic compensator and a damping system, as well as a connected pump module with integrated filters and a gravity gas separation zone, a telemetry system that includes a set of measuring sensors of well and motor parameters connected with the surface control unit via a zero point of wye-connected linear motor windings, while the surface control unit is performed as a three-phase high-frequency regulating inverter and an output transformer connected to the linear submersible electric motor by means of an insulated three-wire cable, distinctive in that is distinctive in that a movable part of the linear submersible motor is connected to a plunger of the pump module by means of a connecting link consisting of a friction couple formed by a hollow enclosure element with a movable rod located inside having a diameter equal to a diameter of the moving part of the linear submersible electric motor, wherein longitudinal dimensions and a stroke length of the movable rod are selected in such a way as to provide at least partial positioning of the movable part of the linear submersible electric motor within an enclosure element cavity of the friction couple.
 
 
 
1. A submersible pumping apparatus comprising, in a single housing, a linear electric motor comprising a fixed part in the form of a sealed stator filled with a dielectric liquid comprising a three-phase winding with mounted temperature sensors, and a movable part being slider, wherein the movable part comprises several sections that are spaced apart in a circumferential direction of the stator, configured to reciprocate relative to the stator, and have a mechanical connection with plungers of pumps; one of the pumps is located in the inner cavity of the stator, the second pump is located in the bottom part of the apparatus in the inner cavity of a hydro-protector; pump cylinders comprise hydraulic dampers of the stroke end points; working chambers of the pumps are interconnected and have a connection with an external environment through filters, located on both sides of the stator, and a suction valve, and with an outlet manifold through a check valve and a unit for attachment of an oil-well pumping apparatus to a tubing string; slider guides made of an antifriction material and position sensors are mounted on both sides of the stator; mounted in the bottom part, a telemetry system comprises pressure and temperature sensors for a borehole fluid, a vibration sensor, an inclinometer, a measuring unit connected to the temperature sensors mounted in the electric motor stator, and the telemetry system is connected to a main surface control unit via the neutral point of the electric motor windings.
 
 

2. A method for lifting fluid from a well, comprising:

(a) mounting a submersible portion of a pumping apparatus into a wellbore, wherein the plunger pumps, by reciprocating the plungers, due to the force transmitted from linear motor sliders, intake a wellbore fluid from the annular space of the well through a gas separator and eject the wellbore fluid through the double-action valves to a tubing string;
(b) feeding three-phase alternating power by a main surface control unit to the electric motor to form a traveling magnetic field in the stator and provide a smooth synchronous reciprocating motion of the slider;
(c) during the working stroke upwards, intaking the wellbore fluid from the annular space of the well through a suction valve located in the bottom part of the apparatus, and ejecting the wellbore fluid into the tubing string by the plunger of an upper plunger pair when a pressure valve is closed;
(d) during the working stroke downwards, ejecting the wellbore fluid into the tubing string with the plunger of a lower plunger pair and filling the working volume of a cylinder of the upper plunger pair through the pressure valve of the second pump when the suction valve of the lower plunger pair is closed.
 
 
 
1. An oil well-pumping unit, comprising; a downhole part which includes a fully integrated plunger pump fitted with discharge valves and a filter cleaning oil fluid and a gravity gas separator with a non-return valve skid above fitted with a coupling for fastening of the oil-well pumping unit to a flow tubing, a downhole linear motor mourned below the plunger pump including a fixed part as a stator with a three-phase winding and fitted temperature sensors, a stator bore houses a moving pan as a slider designed for reciprocating with regard to the stator, a stator cavity is filled with a dielectric fluid, a slider cavity is filled with grease and hard lubricants, the slider is rigidly connected to an extension bar, characterized in that it has a slider upstroke damper mounted below the plunger pump with discharge valves, and a slider downstroke damper mounted at a motor base bottom, a telemetry system below the linear motor.
 

2. A method of pumping well fluid in a subterranean location, comprising:

a. a downhole part of a pumping unit is fitted into a wellbore, a plunger pump through its plunger reciprocation transmitted by a downhole linear motor slider through an extension bar draws oil-well fluid from the wellbore through an at least one discharge valve and pushes the oil-well fluid to a flowing tubing through an at least one non-return valve by means of a gravity gas separator;
b. a ground-based control unit provides the downhole linear motor with three-phase AC power to generate a traveling magnetic field in a stator and provide for smooth reciprocating motion of the downhole linear motor slider;
c. the plunger moves up—power stroke, during an upstroke, the oil-well fluid is pushed inside the pump barrel to the flow tubing through the at least one non-return valve;
d. when the plunger moves down during a downstroke, the oil-well fluid is drawn from the wellbore through at least one discharge valve at a top of the pump.
 

3. A power consumption optimization system and method, comprising the following stages:

a. a ground-based control unit receiving an oil-well fluid pressure and temperature parameters from a downhole telemetry unit to control an inflow of a transferred fluid in a well and changes an operating mode of a downhole linear motor to maintain a production rate;
b. the ground-based control unit receives the temperature parameters of the downhole linear motor and the oil-well fluid from the downhole telemetry unit to control the operating temperature of a downhole part and changes the operating mode of the downhole linear motor to maintain safe operating temperatures;
c. the ground-based control unit determining a position of a slider and controlling, the operation of the downhole linear motor according to a cystogram: an upstroke means a rated power consumption, and a downstroke means a minimum power consumption.

This solution powered by TRIOL provides forced air cooling of the power and low-current components cased in sealed compartments of VSDs with NEMA 4 enclosures. The patented solution provides:

– high efficiency of the single airflow for cooling heat exchanger, radiators and SF coil by means of the special configuration of air channels;

– protection of a radiator from overheating – the main air channel is configured with a special mixing zone;

– efficiency of dehumidification of air in a cell for installing power electronics through a moisture removal system.

Patented Solutions

Technical solutions Product Description Learn more
METHOD OF CONTROLLING SYNCHRONOUS ELECTRIC MOTOR WITH PERMANENT MAGNETS

Linear Electric Submersible Pump Triol EP01

A method of controlling a synchronous electric motor with permanent magnets comprising:

  • defining values characterizing applied voltage and phase
  • measuring phase currents with the conversion of obtained values into a d-q fixed reference system;
  • forming signals of Ud, Uq voltage from the mentioned values;
  • forming signals setting UA, UB, Uphase voltage by converting Ud, Uq voltage signals into Uα, Uβ;
  • supplying the signals setting UA, UB, Uphase voltage into a pulse generating unit of controlled voltage sources;
  • defining alterations of Iq reactive current relatively to specified Iqzad;
  • generating correction signals of UqKOP, UdKOP voltage according to the specified Iqzad value;
  • bringing the correction signals of UqKOP, UdKOP voltage to values necessary to form a set value of the Iqzad reactive current.
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SYSTEM AND METHOD FOR FORCED AIR COOLING OF ELECTRICAL DEVICE

Variable Speed Drive Triol AK06

This solution powered by TRIOL provides forced air cooling of the power and low-current components cased in sealed compartments of VSDs with NEMA 4 enclosures. The patented solution provides:

– high efficiency of the single airflow for cooling heat exchanger, radiators and SF coil by means of the special configuration of air channels;

– protection of a radiator from overheating – the main air channel is configured with a special mixing zone;

– efficiency of dehumidification of air in a cell for installing power electronics through a moisture removal system.

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Pending Patents

Technical solutions Product Description Learn more
SYSTEM SUPPORTING VARIABLE SPEED DRIVE

Variable Speed Drive Triol AK06

 

The reliability of the system is ensured by using an undivided protective panel design with dust and moisture barriers. The need for periodic cleaning is reduced and the need for periodic replacement of filter elements is eliminated. Creating a labyrinth path of air movement increases the effective area of ​​the device, while ensuring a sufficient level of protection of operating electrical equipment from dust and moisture by design with plurality of dust and moisture barriers in the path of air in the labyrinth and arranging them so that all air passing through the path is filtered by these barriers. In addition, the cost of construction is reduced by minimizing assembly and mounting operations. This solution provides an increase in the safety of personnel and the reliability of variable speed drive, ease of transport and reduces the probability of damage if the device is improperly transported. Compact and ergonomic design provides quick replacement of components minimizing idleness. The design makes it possible to fully use the power of the generator, to reduce losses from higher harmonics and reactive currents. The use of embedded additional devices provides prevention of emergency shutdowns and turbine rotation. In addition, the staff is not forced to install a separate additional device and configure it for compliance with variable speed drive that may be accompanied by incorrect configuration. It also reduces the length of the power cables and provides placement of them inside the embodiment that protects against damage. A failure of an additional device, the variable speed drive can continue to operate. The system can be adjusted to different power equipment elements of different variable speed drives. Learn More
TELEMETRY SYSTEM AND METHOD FOR COOLING DOWNHOLE ELECTRONICS

Downhole Measuring System Triol TM01

Triol invention provides a system for monitoring wells and a method for powering the means used to cool heat-generating devices. A telemetry system comprises a surface unit, a downhole unit, and an alternative voltage source in connection through an independent phase with the downhole unit. The surface unit comprises a low-pass filter on the input of the surface unit to protect the telemetry system against overly high voltage. Also, the surface unit comprises a switch in connection with a voltage resistor configured to change the polarity of the voltage.
The downhole unit comprises a transformer, the primary winding of which includes low-pass filter configuration and the secondary winding sets an independent phase. Thermoelectric coolers of the downhole unit are in connection through this independent phase with the alternating voltage source. The invention ensures the transmission of electricity to the thermoelectric coolers through the additional source.
The invention increases the reliability of the telemetry system and the reliability of the results of the measurements.
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METHOD FOR OIL EXTRACTION USING A SUBMERSIBLE LINEAR ELECTRIC MOTOR

Linear Electric Submersible Pump EP01

The invention claimed in this disclosure is aimed at reducing the complexity of the implementation of the method maintaining the satisfactory operation of the equipment and its adaptability to dynamic changes.
The automation of the method when using indicators such as pressure at the pump intake, motor temperature, and current sensor values reduces the complexity of the method. This result is achieved with satisfactory functionality of the equipment and its adaptability to dynamic changes by creating ranges of metering values that determine the need to increase, decrease or maintain the motor reciprocating strokes to achieve maximum fluid extraction. The algorithm for adaptively changing the time intervals for changing the motor reciprocating strokes is created. The algorithm for determining the validity of the measured values maintains the oil extraction process. The method for oil extraction using a submersible linear electric motor was implemented for the first time.
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DOUBLE ACTING LINEAR ELECTRIC SUBMERSIBLE PUMP AND METHOD FOR ITS OPERATION

Linear Electric Submersible Pump Triol EP01

The essence of the invention lays in the fact that the upper pumping plunger pair of a pump module is configured to intake a double volume of a borehole fluid during each operation cycle.
The double-acting linear electric submersible pump equipped with a set of valves and directional pushers. Advanced valve design provides minimizing fluid losses.
We achieved an increase in pumping unit productivity, reducing the concentration of mechanical impurities of the borehole fluid and non-associated gas at a pump module suction, as well as in the enhancement of the pumping unit operation in wells with an inclination angle of more than 40°, particularly in horizontal wells.
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STATOR OF LINEAR ELECTRIC SUBMERSIBLE PUMP UNIT AND METHOD FOR ITS OPERATION

Linear Electric Submersible Pump Triol EP01

Elements of the stator are performed of a material with a relative temperature expansion equal to temperature expansion of elements of a moving part of the linear electric motor. Stator sections are made in a form of a frame structure formed of C-shaped transverse ferromagnetic elements (space plates) with radial protrusions. These elements are connected by sectional and intersectional guide elements installed in an axial direction and configured to provide a constant value of a polar pitch and a precise positioning of stator elements relative to each other.
We achieved an improvement of performance characteristics of the linear electrical motor with permanent magnets with simultaneous provision of a stable draft power with precise positioning of the stator construction elements regardless of temperature expansion and a mechanical load.
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LINEAR ELECTRIC SUBMERSIBLE PUMP UNIT

Linear Electric Submersible Pump Triol EP01

The invention is a unique solution with unparalleled operating characteristics and motion control capabilities among well-known pump units.
A modular embodiment is directed to improve reparability, unification, and manufacture technology process. Safety damping system equipped with hydromechanical dampers which allows us to increase the lifetime of the equipment. Each magnet of the moving part is protected. The unit can be used in small diameter boreholes.
Providing unification of the design and simultaneous increase in the manufacturing processability by means of involving easily removable interoperable modules for its manufacture are achieved. Embodiments of a cable plug, a socket connection, and a hydraulic damper module contribute to a decrease in the pump unit dimensions.
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SUBMERSIBLE PUMPING APPARATUS, COMPRISING LINEAR ELECTRIC MOTOR AND DOUBLE ACTION PUMP

Linear Electric Submersible Pump Triol EP01

The applied invention is one of our latest systems that demonstrate the scientific potential of TRIOL.
A movable part of the linear motor comprises several sections spaced from the stator housing central axis along the diameter; in the central part of the stator a plunger of the double-acting pump is located; the second plunger is located in the inner part of the hydro-protector. The gas separation system is located in a cavity formed by the outer housing of the apparatus and the housing of the linear motor stator.
Such an embodiment of the apparatus provides a significant reduction in its length, effective forced cooling of the apparatus, and active gas separation.
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LINEAR PERMANENT MAGNET MOTOR DIRVEN DOWHHOLE PLUNGER PUMPING UNIT

Linear Electric Submersible Pump Triol EP01

The invention increases reliability and improves the power performance of the pumping unit. The subject of present invention is an oil-well pumping unit comprising a downhole part including a fully integrated plunger pump and gravity gas separator, downhole linear motor, downhole telemetry unit fitted with stratum fluid temperature and pressure sensors, vibration sensor, drift log or inclinometer and the ground-based part consisting of the control unit designed as a three-phase high-frequency inverting controller, output transformer connected with the downhole linear motor via insulated three-wire cable.
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