Electromechanical transducer, downhole equipment and method for extracting gas-containing liquid

Abstract

The proposed group of inventions relates to the field of pumping equipment adapted for pumping a gas-containing liquid by acting on said liquid using a medium released from the gas-containing liquid itself. For extracting a gas-containing liquid, production tubing and at least one electromechanical transducer are installed in a borehole. Attached to each of the two opposing ends of the electromechanical transducer is at least one vibration concentrating waveguide which acts on the gas-containing liquid from two opposing ends of a core of the transducer. The position of the electromechanical transducer inside the borehole is fixed by means of a protruding member situated in a region of zero vibration amplitude on each of the vibration concentrating waveguides. The electromechanical transducer is installed inside the borehole above the bubble point pressure level of the gas-containing liquid, electrical energy is fed to a winding on the core, and gas dissolved in the gas-containing liquid is released, giving rise to a gas-liquid mixture which is raised to the surface by the lifting energy of the released gas and the pressure on the bottom of the hole. The technical result includes increasing the amount of gas released from a unit volume of a gas-containing liquid, with no significant increase in the mass characteristics of the equipment used, and ensuring that the electromechanical transducer is securely fastened and held inside the borehole in the presence of high-frequency vibrations. In addition, the proposed solution obviates the need for equipment for feeding auxiliary fluids into a borehole in order to extract a gas-containing liquid.

Description

[0001] Electromechanical converter, downhole equipment and method for producing gas-containing fluid

[0002] Field of technology

[0003] This group of inventions relates to pumping equipment that enables the pumping of gas-containing liquids by exposing them to a medium released from the gas-containing liquid itself. Specifically, the invention can be used in a device for lifting gas-containing liquids from underground reservoirs, including wells, in downhole equipment incorporating such lifting means, and in a method for lifting gas-containing liquids from a well to its wellhead.

[0004] The presented solution proposes lifting fluid from a well using gas, which, during storage, is dissolved within the gas-containing liquid itself. Such liquids primarily include oil with increased or high gas content. However, the presented invention can also be applied to other liquids containing dissolved gases.

[0005] Prior art

[0006] A well-known technical solution for lifting gas-containing fluids, such as oil, involves injecting compressed gas (e.g., air, nitrogen, methane, etc.) into the formation, thereby lifting the gas-containing fluid to the wellhead (gas lift). This method is implemented by installing gas lift valves on the tubing string. These valves can be check valves, for example, consisting of a valve seat and a shutoff element (e.g., a ball), or other valve devices that, when necessary, supply compressed gas to the oil layer for lifting to the wellhead. Borehole chambers with an elliptical cross-section, which facilitate the installation and removal of the corresponding valves, can also be used to install the valves. The valves are installed in the side of the borehole chamber using a wireline technique, while leaving the passage in the tubing string open.Compressed gas for this method can be supplied either through a ring system between two rows of pipes or between the casing and flow pipes, or through central pipes. Compressed gas can also be introduced through a gas-lift valve located above the packer (see I.Yu. Bykov et al., Oil and Gas Production and Treatment Equipment and Technology, Moscow, Energy Press, 2013, Vol. I, pp. 87-91, Figs. 2.17 and 2.18).

[0007] This method of lifting gas-containing liquids is widely used in oil production, but it has one significant drawback: it requires compressor units to purify and supply compressed gas, as well as equipment to deliver gas to the well (air columns, special valves, etc.). Therefore, this method requires a significant amount of specialized equipment for its implementation and use at the well.

[0008] Also known in the art is a means for creating a gas lift using gases present in the gas-containing liquid itself. Specifically, such a means is based on high-frequency action on the gas-containing liquid, resulting in its degassing and the release of dissolved gases. This means is based on the use of an electromechanical transducer containing a winding and a core made of magnetostrictive material, housed in a container. A waveguide-concentrator of oscillations, having a through hole and secured to a partition inside the container, is attached to one end of the core. Using such a transducer, the gas-containing liquid is freed from dissolved gases and rises to the wellhead as part of a gas-liquid mixture (see RU 2081995 C1, published 20.06.1997, fig.).

[0009] This solution allows the use of gases present in the fluid itself to lift the gas-containing fluid, thereby eliminating the need for equipment required for pumping gases into the well during gas lift production. However, given the design features of this solution, where the gas-containing fluid is primarily interacting with a single waveguide-oscillation concentrator, it also has certain drawbacks. The standing wave generated in the waveguide-oscillation concentrator results in the presence of inactive regions within it, making it less suitable for influencing the gas-containing fluid. Consequently, the waveguide-oscillation concentrator is designed so that the region containing its end surface, which interacts with the gas-containing fluid, has the greatest oscillation amplitude.This design is optimal in terms of the material and energy costs required to create a high-frequency stimulus on the fluid, carried out in resonant mode to ensure cavitation of the gas-containing fluid at its saturation pressure. Furthermore, the presence of inactive zones in the waveguide-concentrator with low impact on the gas-containing fluid (operating off-resonance and, therefore, without achieving cavitation) facilitates the search for solutions to improve the efficiency of gas extraction using an electromechanical converter, and, consequently, to increase well productivity when using it.

[0010] The technical challenge is to address the aforementioned shortcomings of existing solutions. Specifically, the goal is to improve the efficiency of gas extraction from gas-containing liquids, enhance well productivity when extracting such liquids, and simplify the technological operations required to bring the well into production.

[0011] Disclosure of invention

[0012] The technical result achieved by using the claimed electromechanical converter and downhole equipment equipped with it is an increase in the amount of gas extracted from a unit volume of gas-containing fluid without significantly increasing the mass characteristics of the equipment used. This ensures reliable attachment and retention of the electromechanical converter within the wellbore under high-frequency vibrations of the waveguide-concentrator.

[0013] The technical result is achieved in that the electromechanical transducer for acting on a gas-containing liquid includes a core with a winding placed on it, formed using a material that changes its shape or dimensions when high-frequency electrical energy is supplied to the winding from a high-frequency electrical oscillation generator, while at least one waveguide in the form of an oscillation concentrator (waveguide-oscillation concentrator) is fixed to each of the two opposite ends of the core.Each waveguide-oscillation concentrator comprises at least one active surface adapted to interact with a gas-containing liquid and arranged so that, on at least two opposite sides of the core, there is at least one active surface adapted to interact with a gas-containing liquid and arranged on a separate waveguide-oscillation concentrator, and on the lateral surface of at least one of the waveguide-oscillation concentrators secured to the core, there is at least one protruding means located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude. Moreover, at least one protruding means is adapted to set the position of the waveguide-oscillation concentrators, the core and the winding arranged thereon relative to the external suspension.

[0014] In the present invention, the key element of the electromechanical transducer is a "waveguide-concentrator." It is important to note that in ultrasonic technology, solid-state acoustic waveguides also refer to any devices similar to sound tubes (rods, concentrators) used to transmit vibrational energy over a distance from the source or to introduce vibrational energy into a medium (Source: The Great Russian Encyclopedia https: / / old.bigenc.ru / physics / text / 1808440). Thus, the "waveguide" and "concentrator" in this solution are one and the same structural element, characterized by two functions. Firstly, this element serves to transmit the wave (i.e., it acts as a waveguide), and secondly, due to its shape, it increases the vibration intensity at the end (i.e., it acts as a concentrator). Both of these functions, both in the claimed design and in similar solutions from the prior art, are implemented simultaneously.

[0015] The core of the electromechanical transducer can be formed using magnetostrictive or piezoceramic material.

[0016] The achievement of the above-mentioned technical result in the proposed electromechanical converter is due to the simultaneous presence of multiple waveguide-oscillation concentrators. One waveguide-oscillation concentrator is located at the end of the core opposite the attachment point of the other waveguide-oscillation concentrator. This results in a longitudinally elongated structure that aligns well with the wellbore's internal tubular space (the length along the wellbore axis is much greater than the transverse axis), facilitating its more convenient installation and placement relative to the existing suspension on the downhole equipment. Such a suspension could, in particular, be the tubing string and couplings or other auxiliary fastening means that ensure the positioning of the electromechanical waveguide-oscillation concentrator relative to the tubing strings present in the wellbore.Furthermore, the above-mentioned design results in two zones with the highest oscillation amplitudes, which contact the gas-containing liquid, being located on either side of the core. As a result, after interaction with one of these surfaces, partial gas release occurs from the liquid. If the gas-liquid mixture moves toward the wellhead, for example, due to the upward energy of the released gas under the pressure present at the wellbore bottom, the gas-liquid mixture also interacts with the surface of the other waveguide-oscillation concentrator, which is designed to interact with the gas-containing liquid.

[0017] In this part, it should be noted that the interaction of the electromechanical converter with a portion of gas-containing liquid can occur sequentially, as described above for the case of placing waveguides-oscillation concentrators with a core along the borehole axis, and simultaneously, if the diameter of the borehole or the column of corresponding pipes at the installation site of the electromechanical converter allows it to be placed across or at an angle to the borehole axis.

[0018] As a result, additional gas is extracted from the gas-containing liquid present in the gas-liquid mixture. This increases the surface area of ​​the electromechanical transducer acting on the gas-containing liquid in the confined space of the wellbore and increases the amount of gas extracted per unit volume of gas-containing liquid.

[0019] A single core with winding is used for both waveguide concentrators, which allows for a slight reduction in the mass characteristics of the electromechanical transducer compared to using two transducers with their own waveguide concentrator. This design also significantly increases the operating time between repairs for the core and winding when exposed to the flow without a protective container. This is because the waveguide concentrator also acts as a protective device, absorbing the impact of the gas-containing fluid flow. When waveguides concentrator are placed on the core, they shield the corresponding surfaces of the core from erosion or any other impact that may result from direct contact with the gas-containing fluid and any solid particles and impurities present in it.Moreover, placing the protruding means, which ensures the positioning of the electromechanical transducer relative to the suspension, in a zone with zero vibration amplitude helps reduce the transmission of vibrations to the suspension. This achieves more reliable retention of the electromechanical transducer by minimizing the high-frequency vibrations transmitted through this positioning means, especially when exposed to high-frequency vibrations of the waveguide concentrator and interactions with the resulting gas bubbles.

[0020] This results in an increased amount of gas extracted from a unit volume of gas-containing fluid without significantly increasing the mass characteristics of the equipment used. This design of the electromechanical transducer also ensures its secure attachment and retention within the borehole under the high-frequency vibrations of the waveguide-concentrator.

[0021] The technical result is also achieved by the side surfaces of each waveguide-oscillation concentrator being cylindrical, conical, or having a curved profile. Specifically, the side surfaces of each waveguide-oscillation concentrator have a stepped shape, with the side surface of each step being cylindrical, conical, or having a curved profile.

[0022] The waveguide-oscillation concentrator may have at least one closed cavity or an open cavity, in particular a through hole.

[0023] At least one of the protruding means of the waveguide-oscillation concentrator is made in the form of an annular protrusion, which may have a damper, which is an elastomeric ring or another element with damping properties, fixed on the waveguide-oscillation concentrator.

[0024] The annular protrusion contains at least one opening for the passage of a gas-containing liquid, at least one fastening means and / or at least one means for supplying electrical energy to the core winding.

[0025] According to a preferred embodiment of the invention, the electromechanical transducer may comprise a container secured to at least one of the protruding waveguide concentrators. Such a container is configured to interact with an external suspension. In one embodiment, the container has at least one through-hole or slot for the passage of a gas-containing liquid. In another embodiment, the container is hermetically sealed, with the surface of each waveguide concentrator configured to interact with the gas-containing liquid located outside the container.

[0026] If the container is sealed, it may contain cooling media. This cooling media may be a cooling liquid placed inside the container to transfer heat from the winding and core to the outside environment through the container wall. The container may also have an additional coolant tank, and its wall may have at least one opening for filling and / or draining the coolant. Transformer oil is preferably used as the cooling liquid.

[0027] The outer and / or inner surfaces of the container may be provided with fins or plates extending outward and / or inward, respectively, and configured to interact with the liquid in contact with the corresponding surface of the container. These fins or plates serve to increase the contact area with the cooling or gas-containing liquid and, accordingly, to intensify heat exchange with them.

[0028] Preferably, the container wall is provided with at least one opening for accommodating a means for supplying electrical energy to the core winding.

[0029] It is also possible to design the container as a split container. In this case, the container includes at least one end cap with an opening for the waveguide concentrator.

[0030] The container may also be located in a housing designed to interact with an external suspension and secured to it using fasteners. In this case, it is also possible for at least one of the protruding elements of one of the waveguide-concentrators to interact with or be secured to the inner surface of the housing.

[0031] The external hanger typically comprises either one of the pipes or couplings of the tubing string, or a means for securing the electromechanical transducer to the tubing in the annulus, or to a load-carrying cable. Another invention in this group relates to downhole equipment for influencing gas-containing fluid, particularly for the purpose of its production, including the aforementioned electromechanical transducer. Specifically, the downhole equipment includes a tubing string, at least one high-frequency oscillation generator, and at least one electromechanical transducer for influencing the gas-containing fluid.The transducer comprises a core with a winding placed thereon, formed using a material that changes its shape or dimensions when electrical energy is supplied to the winding, wherein at least one waveguide-oscillation concentrator is secured to each of the two opposite ends of the core. Each waveguide-oscillation concentrator comprises at least one active surface configured to interact with a gas-containing liquid and arranged such that at least two opposite sides of the core have a waveguide-oscillation concentrator with an active surface configured to interact with the gas-containing liquid. On the lateral surface of at least one of the waveguide-oscillation concentrators secured to the core, there is at least one protruding means located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude.In this case, at least one protruding means is designed with the ability to set the position of the waveguides-oscillation concentrators, the core and the winding placed on it relative to the column of tubing.

[0032] This technical solution, thanks to its use of an electromechanical transducer, also retains all the advantages of the latter. Specifically, given the above circumstances, it achieves the result of increasing the amount of gas released from a unit volume of gas-containing fluid without significantly increasing the mass characteristics of the equipment used. Furthermore, this design of the electromechanical transducer facilitates its secure attachment and retention within the wellbore relative to the tubing string under the high-frequency vibrations of the waveguide-vibration concentrator. Thus, the proposed downhole equipment enables stimulation of the gas-containing fluid while minimizing the amount of additional equipment, specifically eliminating the need for equipment required for supplying auxiliary fluids to the wellbore.At the same time, such downhole equipment can also be used in combination with other known equipment for the production of well fluid, which is not necessary for interaction with the gas-containing liquid within the framework of the proposed technical solution, but can provide additional positive effects with the sequential and / or alternating use of such equipment.

[0033] In particular, downhole equipment may additionally include a vane, screw or diaphragm pump with an electric motor, for example, a valve motor.

[0034] In this case, it is possible to combine the wellbore's wellbore pumping method with the proposed method based on electromechanical transducers. This allows, depending on the current wellbore conditions—specifically, the measured pressure at the location of the electromechanical transducer and the saturation pressure of the gas-containing fluid—to utilize the most appropriate method for lifting fluid, achieving maximum equipment energy efficiency.

[0035] It should also be noted that various combinations of electromechanical transducer placement are possible when using downhole equipment. Specifically, at least one electromechanical transducer can be placed inside and / or outside the tubing.

[0036] If packers are required to manage the flow of gas-containing fluid, the downhole equipment may include at least one packer installed on the tubing string. At least one electromechanical transducer may be located above and / or below the packer.

[0037] The aforementioned advantages of using the proposed solution in conjunction with another method for lifting gas-containing liquids can be achieved not only in combination with the aforementioned pumping method, but also in combination with gas lift production. For this purpose, the downhole equipment may also include at least one downhole chamber and / or at least one valve, such as a gas lift, suction, or check valve, which are connected to the tubing. Moreover, at least one electromechanical transducer may be located inside and / or outside the downhole chamber. At least one additional tubing string may also be installed around the tubing string, forming an annular space between the tubing strings over at least a portion of their length.In this case, at least one electromechanical converter can be placed inside and / or outside the annular space between the tubing strings.

[0038] In additional embodiments, at least one electromechanical transducer may be located before and / or after the receiving valve.

[0039] The operation of electromechanical transducers can also monitor the parameters of the gas-containing fluid. This can be useful both for regulating the operating mode of the electromechanical transducer itself and for connecting and / or disconnecting auxiliary equipment, such as the aforementioned vane pump or a remotely controlled valve. In this case, the downhole equipment may include at least one sensor monitoring the operating parameters of the electromechanical transducer, the gas-containing fluid, and / or the gas-liquid mixture.

[0040] In this case, the downhole equipment may include a control system with a submersible communication cable, providing for regulation of the supply of electrical energy to at least one electromechanical converter based on a signal from at least one sensor and containing at least one controller and / or at least one time relay.

[0041] Another invention in this group relates to a method for extracting gas-containing fluid using an electromechanical transducer. To implement this method, a tubing string, at least one high-frequency oscillation generator, and at least one electromechanical transducer are placed in a wellbore. The transducer comprises a core with a winding placed thereon, formed using a material that changes its shape or dimensions when electrical energy is supplied to the winding from the high-frequency oscillation generator, and at each of the two opposite ends of the core, at least one waveguide-concentrator of the oscillations is secured.Each waveguide-oscillation concentrator comprises at least one active surface adapted to interact with a gas-containing liquid and arranged so that at least one active surface adapted to interact with a gas-containing liquid and arranged on a separate waveguide-oscillation concentrator is present on at least two opposite sides of the core. When placing at least one electromechanical transducer in the well, the position of the waveguide-oscillation concentrators, the core, and the winding arranged thereon relative to the tubing string is determined using at least one protruding means, which is arranged on the lateral surface of at least one of the waveguide-oscillation concentrators secured to the core and is located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude.At least one electromechanical transducer is positioned in the wellbore above the saturation pressure of the gas-containing fluid. Electrical energy is then supplied to the core winding of at least one electromechanical transducer, and the gas dissolved in the gas-containing fluid is released to form a gas-liquid mixture by applying at least one active surface of each waveguide-oscillation concentrator to the gas-containing fluid and raising the gas-liquid mixture to the surface due to the upward energy of the released gas and the pressure at the wellbore bottom.

[0042] In addition to the aforementioned advantages of increasing the amount of gas extracted from a unit volume of gas-containing liquid without significantly increasing the mass characteristics of the equipment used, as well as securely mounting and retaining the electromechanical transducer within the well, this method also offers additional benefits. These include, in particular, eliminating the need for additional fluids to extract the gas-containing liquid from the well, since the dissolved gas is used to lift the liquid. This, accordingly, reduces the number of technological steps required to install downhole equipment and reduces the time required to bring the well into production.

[0043] It should also be noted that, given the potential for changing conditions within the well, the proposed method also requires the ability to control the electromechanical converter, allowing for the selection of its activation conditions for optimal operation. Therefore, when implementing the method, electrical energy is supplied to the core winding of at least one electromechanical converter, for example, via a downhole cable, based on a signal from at least one sensor located in the well.

[0044] This method can also be used after the well has been killed. In this case, electrical energy is supplied to the core winding of at least one electromechanical converter after the killing fluid has been removed from the well.

[0045] The proposed method also makes it possible to use multiple electromechanical transducers placed sequentially along the borehole axis. To achieve this, at least one additional electromechanical transducer is placed in the borehole below the electromechanical transducer located above the saturation pressure of the gas-containing fluid.

[0046] In this case, electrical energy is supplied to the winding of the core of at least one additional electromechanical converter based on a signal from at least one sensor located in the well in the event that the pressure at the level of its placement is less than or equal to the saturation pressure of the gas-containing liquid.

[0047] It should also be noted that electrical energy can be supplied to the core winding through at least one protruding means located on the side surface of at least one waveguide oscillation concentrator. For this purpose, it has at least one opening for the passage of at least one means providing electrical energy to the core winding.

[0048] A power cable or other conductor may act as such a means of supplying electrical energy.

[0049] In view of the above, the use of the presented electromechanical converter, including as part of downhole equipment, ensures the achievement of an increased amount of gas released from a unit volume of gas-containing liquid without significantly increasing the mass characteristics of the equipment used. Furthermore, reliable mounting and retention of such a converter within the well is ensured.

[0050] Moreover, the method of extracting gas-containing liquid, carried out using an electromechanical converter, additionally allows for a reduction in the number of technological operations required for the placement of well equipment and a reduction in the time required to put the well into operation.

[0051] Also, due to the fact that the operation of electromechanical converters is based on the extraction of dissolved gas from a gas-containing liquid and does not require the use of additional mechanical devices that may be subject to external influences, the proposed method can be widely used in difficult conditions, for example, in conditions of high gas content or temperature of the gas-containing liquid, the presence of mechanical impurities (sand), paraffin deposits and / or salts.

[0052] Brief description of drawing figures

[0053] The presented group of inventions is explained by the drawings, where: Fig. 1 shows the general view of the electromechanical converter; Fig. 2 - the electromechanical converter installed on the external suspension; Fig. 3 shows the electromechanical converter placed in a sealed container; Fig. 4 shows the electromechanical converter placed in a sealed container inside the housing; Fig. 5 shows the electromechanical converter placed in a container with openings; Fig. 6 shows the electromechanical converter placed in a container with openings inside the housing; Fig. 7 schematically shows an additional stage of the waveguide-oscillation concentrator with an opening; Figs. 8 and 9 show the longitudinal and cross sections of the container for the electromechanical converter with external plates or fins for cooling; Fig.10-13 schematically show possible options for placing an electromechanical converter with a wellhead generator of high-frequency oscillations in a well; Figs. 14-17 schematically show possible options for placing an electromechanical converter with a submersible generator of high-frequency oscillations in a well together with pumping equipment; Figs. 18-19 schematically show options for using an electromechanical converter for developing a well after it has been killed; Figs. 20-25 schematically show options for using an electromechanical converter together with equipment for gas-lift production of gas-containing liquid.

[0054] Legend:

[0055] 1 - electromechanical converter;

[0056] 2 - core;

[0057] 3 - winding;

[0058] 4 - electric cable;

[0059] 5 - waveguide-oscillation concentrator;

[0060] 6 - active surface of the waveguide-oscillation concentrator;

[0061] 7 - protruding means of the waveguide-oscillation concentrator;

[0062] 8 - suspension of electromechanical converter;

[0063] 9 - fastening means;

[0064] 10 - electromechanical converter container;

[0065] 11 - damper;

[0066] 12 - holes in the protruding means of the waveguide-oscillation concentrator;

[0067] 13 - internal sealed cavity of the container;

[0068] 14 - container end cap;

[0069] 15 - through holes or slots in the container;

[0070] 16 - through holes in the waveguide-oscillation concentrator;

[0071] 17 - blind hole in the waveguide-oscillation concentrator;

[0072] 18 - body;

[0073] 19 - means for fastening the container to the body;

[0074] 20 - high-frequency oscillation generator;

[0075] 21 - plates or ribs of the container;

[0076] 22 - packer;

[0077] 23 - valve;

[0078] 24 - pump;

[0079] 25 - control system;

[0080] 26 - layer;

[0081] 27 - well chamber;

[0082] 28 - additional stage of the waveguide-oscillation concentrator; 29 - openings in the container for placing the means for supplying electrical energy;

[0083] 30 - an opening in the element of fastening to the suspension, used to place the means of supplying electrical energy;

[0084] 31 - column of oil well tubing;

[0085] 32 - additional column of tubing;

[0086] 33 - thread for attaching the body to the suspension;

[0087] 34 - sensor.

[0088] Implementation of the invention

[0089] As shown in Fig. 1 of the drawings, electromechanical transducer 1 for acting on a gas-containing liquid includes a core 2 with a winding 3 of conductive strands or wires placed thereon, formed using a magnetostrictive or piezoceramic material. The use of a core made of these materials allows core 2 to change its shape or dimensions when electrical energy, including high-frequency energy, is applied to winding 3. This results in periodic elongation and compression of core 2, thereby generating mechanical vibrations at an ultrasonic frequency.

[0090] On the inner side of winding 3, in the area where the wires bend, an elastomer or polymer pad or other elastic means may be placed on core 2 to help protect the conductive wires from abrasion (not shown in the figure). Such a means may also be placed between the flat outer surface of core 2 and winding 3.

[0091] Electrical energy is supplied to winding 3 via electrical cable 4 (Fig. 2), which is connected to high-frequency oscillation generator 20 installed on the surface at the wellhead (Figs. 10-13) and runs along the tubing string 31. At the same time, such high-frequency oscillation generator 20 can also be located in the well, for example, in one or in different housings at the location of electromechanical converter 1 (Figs. 14-17).

[0092] At each of the two opposite ends of the core 2 of the electromechanical transducer 1, at least one waveguide in the form of an oscillation concentrator (waveguide-oscillation concentrator 5) is fixed (Fig. 1). Each waveguide-oscillation concentrator 5 contains at least one active surface 6, configured to interact with a gas-containing liquid. The said active surfaces 6 are arranged so that at least on two opposite sides of the core 2 there is at least one active surface 6, configured to interact in the cavitation mode with a gas-containing liquid, and arranged on a separate waveguide-oscillation concentrator 5. Thus, the electromechanical transducer 1, with the presence of only one core, makes it possible to place twice as many active surfaces of the waveguides-oscillation concentrators 5, serving to interact with a gas-containing liquid.As a result, the efficiency of gas release increases to a greater extent than the mass of the electromechanical converter required to achieve it due to the possibility of using only one core 2.

[0093] The side surfaces of each waveguide-concentrator 5 of oscillations can be made cylindrical, conical, or can have a curvilinear profile.

[0094] On the side surface of at least one of the oscillation waveguides-concentrators 5 fixed to the core 2, there is at least one protruding means 7, made, for example, in the form of an annular protrusion, and located in the zone of the corresponding oscillation waveguide-concentrator 5, having a zero oscillation amplitude.

[0095] It should be noted that this device 7 (annular projection) is located in the area of ​​the waveguide-oscillation concentrator 5, where vibration and oscillation are essentially absent. This is due to the fact that the waveguide-oscillation concentrator 5 is designed such that the distance from the protruding device 7 to each end surface of the waveguide-oscillation concentrator 5 is half the wavelength of the resulting wave. As a result, the amplitude of the standing wave generated in the area of ​​the protruding device 7 will be zero.

[0096] For example, the waveguide-concentrator 5 can be designed as a stepped waveguide, with the length of each step equal to half the wavelength of the resulting wave, and the protruding device 7 is positioned between these steps. The side surface of each step can be cylindrical, conical, or have a curved profile. Fig. 1 shows a stepped waveguide-concentrator 5 with two steps having a cylindrical side surface. However, the number of said steps can be greater.

[0097] As a result of the specified design of the waveguide-concentrator 5, the transmission of vibrations through the protruding means 7 to the external suspension 8, for example, one of the pipes of the tubing string 31 (Fig. 2), is reduced to a minimum. This increases the reliability of the retention of the electromechanical transducer relative to such suspension 8, and, consequently, the reliability of the fastening of the electromechanical transducer inside the wellbore under conditions of high-frequency vibrations of the waveguide-concentrator and interaction with the resulting gas bubbles.

[0098] Additionally, to reduce the transmission of vibrations to the external suspension 8, the annular projection may also be equipped with a damper 11 (Fig. 3), which is an elastomeric ring secured to the waveguide-concentrator 5. In another embodiment, such a damper 11 may also be placed on the retaining element of the suspension 8.

[0099] As shown in Fig. 2, the protruding means 7 is designed to set the position of the oscillation concentrator waveguides 5, the core 2 and the winding 3 placed on it relative to the external suspension 8. The external suspension 8, in various embodiments of the invention, can be either one of the pipes of the column 31 of tubing (Fig. 2), or a means for securing the electromechanical converter to the tubing from their outer side in the annulus, or a load-bearing cable, or another fastening means, such as a coupling, a sub, etc.

[0100] It should also be noted that, due to the design of the protruding means 7 in the form of an annular projection, it is necessary to organize the movement of a gas-containing liquid through said projection, or to supply an electric cable 4 or a fastening means 9. For this purpose, one or more openings 12 can be made in said projection for the passage of a gas-containing liquid (Fig. 5), for placing a fastening means 9 (Figs. 2 and 5) or a means for supplying electric energy to the winding of the core 2, such as an electric cable 4 (Fig. 5).

[0101] Also, a closed or open cavity, in particular, a through hole 16, can be made in the waveguide-concentrator 5 of oscillations itself, in particular in its additional stage 28 (Fig. 7). The through hole 16 can be used for the passage of a gas-containing liquid and thereby additionally increase the area of ​​the active surface of the waveguide-concentrator 5 of oscillations interacting with such liquid, and further increase the degree of gas extraction from a unit volume of the gas-containing liquid. It is also possible to make an open cavity of each waveguide-concentrator 5 of oscillations in the form of a blind hole 17 having a thread for connecting an additional stage 28 of the waveguide-concentrator (Fig. 4). Such an additional stage 28 makes it possible, depending on production needs, to change the area of ​​the active end surface 6 of the waveguide-concentrator 5 of oscillations, as well as the amplitude of oscillations.

[0102] To protect the core 2 and winding 3 from external influences, the said elements of the electromechanical converter can be placed in the internal cavity of the container 10. In this case, the active surfaces 6 of the waveguide-oscillation concentrators 5, which serve to interact with the gas-containing liquid, are placed outside such a container 10. For this purpose, the container 10 is made detachable, with one or more end caps 14 having an opening for the passage of a part of the waveguide-oscillation concentrator 5 (Figs. 3, 5 and 6).

[0103] In the above-mentioned case, the protruding means 7 of the oscillation waveguides-concentrators 5 directly interact with the inner surface of the container 10, and their placement on the suspension 8 is carried out indirectly, with the help of the said container 10.

[0104] In this case, the container 10 can be made blind, with a closed hermetic cavity 13 inside (Fig. 3 and 6) or have through holes or slots 15 on its side surface (Fig. 5). This design of the container allows for the cooling of the elements placed inside it. In particular, the design of the container 10 with an opening or slot 15 allows for the passage of a gas-containing liquid flow through its internal cavity and, thereby, ensures the removal of heat from the winding 3 and the core 2. In this case, the design of the internal cavity of the container 10 in the form of a closed hermetic cavity 13 allows for the placement of cooling means inside such cavity 13, facilitating the removal of heat from the winding 3 and the core 2 into the external gas-containing liquid.

[0105] A cooling liquid, such as transformer oil, can be used as such a cooling medium. This liquid can be placed inside container 10 to transfer heat from winding 3 and core 2 to the external environment through the wall of container 10. Container 10 is filled with transformer oil and drained through an opening in its wall. Container 10 can be equipped with an additional tank to accommodate the oil, from which oil can be fed into cavity 13 either by force, using a pump, or by gravity.

[0106] Furthermore, to further enhance heat exchange between the wall of container 10 and the gas-containing liquid or transformer oil, fins or plates 21 with an increased area are placed on the corresponding wall, extending outward (Figs. 8 and 9) and / or inward (not shown in the Fig.). By means of these fins or plates 21, the heat exchange surface with the corresponding liquid is increased, making it possible to transfer a greater amount of heat per unit of time, which facilitates more intensive cooling of core 2 and winding 3.

[0107] In a particular embodiment, one or more openings 29 may also be made in the wall of the container 10 for accommodating a means for supplying electrical energy to the core winding, such as an electrical cable, a sealed spark plug, a current lead, or any other suitable means. An embodiment is also possible in which the means for supplying electrical energy to the core winding passes through an opening (not shown in the figure) in the wall of the housing 18 or through an opening 30 present on one of the elements for connection to the suspension 8, for example, made in the form of one of the pipes of the column 31 of tubing (Fig. 2).

[0108] Along with the above-mentioned container 10, a housing 18 (Figs. 4 and 6) can also be used to accommodate the electromechanical transducer 1 inside the well. Such housing 18 serves to secure the electromechanical transducer 1 to the external suspension 8. In the particular case of the suspension 8 being implemented in the form of one of the pipes of the tubing string 31, such housing 18 can be placed between two adjacent pipes of the said string. For this purpose, threads 33 (Fig. 6) or other fastening means can be made on the end portions of the housing 18, ensuring its fastening either directly to the corresponding pipe of the string 31 or through a sub.

[0109] The electromechanical transducer 1 is secured within such a housing 18 either by means of fastening means 19, which connect the container 10 and the wall of the housing 18 (Fig. 4), or by means of a protruding means 7, which in this case interacts with its inner surface or can be secured to it. A combination of the above-mentioned fastening methods is also possible.

[0110] The electromechanical converter operates as follows. When high-frequency electrical oscillations are applied from generator 20 to winding 3 of core 2, the latter's shape or size periodically changes. This change affects both ends of the core, to which waveguide-oscillation concentrators 5 are attached. As a result, vacuum zones in the form of cavities arise on the surface 6 of each waveguide-oscillation concentrator 5, which interacts with the gas-containing liquid. The formation of these cavities is due to the viscosity of the gas-containing liquid, such as oil. These properties of the liquid, leading to a certain inertia, prevent its surface from precisely following the high-frequency oscillations of surface 6. The resulting cavities instantly fill with gas released from the gas-containing liquid, due to the pressure in them being lower than the saturation pressure of the gas-containing liquid.This creates gas bubbles, which, under the influence of gravity, rise toward the wellhead. As a result, using electromechanical converter 1, a gas-liquid mixture can be produced, which can have various applications, including lifting gas-containing liquid toward the wellhead.

[0111] Moreover, the presence of waveguide-concentrators 5 on both sides of core 2 increases the active surface area 6 of the electromechanical transducer, which acts on the gas-containing fluid in the confined space of the borehole, and increases the amount of gas released per unit volume of gas-containing fluid. However, this design increases the mass characteristics of the electromechanical transducer only slightly.

[0112] At the same time, reliable fastening and retention of the electromechanical converter inside the well is also ensured under conditions of high-frequency vibrations of the waveguide-concentrator 5 oscillations.

[0113] The above-mentioned electromechanical transducer 1 in any of the possible embodiments of it can be used as part of downhole equipment for influencing a gas-containing liquid, for example, for influencing oil for the purpose of its production. In this case, the downhole equipment includes at least one generator 20 of high-frequency oscillations, a string 31 of tubing pipes and at least one electromechanical transducer 1 for influencing a gas-containing liquid (Fig. 10). In this case, at least one protruding means 7 of the waveguides-concentrators of oscillations 5 will set the position of the waveguides-concentrators of oscillations 5, the core 2 and the winding 3 placed on it relative to the suspension 8 made, for example, in the form of one of the pipes of the string 31 of tubing pipes. In various embodiments, the electromechanical transducer can be placed inside the string 31 of tubing pipes (Fig.10 and 12) or outside the tubing string 31 in the annulus (Figs. 11 and 13). In the latter case, it is possible to reduce the hydraulic resistance for the flow of the gas-liquid mixture inside the tubing string 31, and also to lower geophysical instruments from the wellhead to the bottomhole. In this case, the tubing string 31 is equipped with valves 23, which serve to bypass the gas-liquid mixture coming from the electromechanical converters 1 into the string.

[0114] The above-mentioned variants of placement of electromechanical converters 1 may be combined with additional pumping equipment. For this purpose, a vane, screw, or diaphragm pump 24 with an electric motor, for example, a valve electric motor (Figs. 14-17), may be placed on the tubing string 31. In this case, the electromechanical converter may also be placed inside (Figs. 14 and 16) or outside (Figs. 15 and 17) the tubing string 31 in the annulus. In the latter case, such placement of the electromechanical converters 1 provides access to the drain valve located above the pump 24 and allows the use of a wireline tool or a crowbar to knock off the drain valve in order to facilitate well killing.

[0115] It is also possible to use electromechanical transducers 1 together with one or more packers 22 for isolating different zones of the downhole space. In this case, at least one electromechanical transducer 1 can be placed in the space above the packer 22 (Fig. 12), below the packer 22 (Fig. 16), or simultaneously above and below the packer 22 (Figs. 13 and 17). This embodiment can be useful for isolating intervals of the downhole space located above, for example, if the casing string has leaks (Figs. 12 and 16), or for separating layers 26 (Figs. 13 and 17) for the purpose of simultaneous-separate or periodic operation of two layers 26.

[0116] In a preferred embodiment, one or more electromechanical converters 1 can be used for well development. In this case, after the well is killed, gas is forced into the annulus from the wellhead (Figs. 18 and 19). After the killing fluid is removed, the electromechanical converters 1 are activated. At the same time, the backpressure on the formation decreases, and a fresh influx of gas-containing fluid begins. Under the influence of formation pressure, the well enters a flowing mode. The use of electromechanical converters 1 (Figs. 18 and 19) ensures the formation of a gas-liquid mixture, which allows the well to be developed more quickly and achieve a higher flow rate.

[0117] In this embodiment, it is possible to combine electromechanical converters 1 with a valve 23, for example, a check valve, which facilitates the organization of fluid movement in the well space (Fig. 19).

[0118] In another embodiment of the downhole equipment, it is proposed to use one or more electromechanical converters 1 together with means that provide a gas-lift method for extracting gas-containing liquid.

[0119] In this case, the electromechanical transducers 1 can be used together with at least one downhole chamber 27 and / or at least one valve 23, such as a receiving valve or a gas lift valve. In this case, at least one electromechanical transducer 1 can be placed inside the downhole chamber 27 (Fig. 20) and / or outside it. Also, one or more electromechanical transducers 1 can be placed in front of the valve 23, for example, a receiving valve (Fig. 20) and / or after such a valve 23.

[0120] If the gas-lift method of oil production is organized using the annulus to supply compressed gas into the well, then one or more electromechanical converters 1 are placed inside the tubing string 31 (Fig. 21). If a different scheme is used - with the supply of compressed gas through the tubing string 31, then one or more electromechanical converters 1 are placed in the annulus (Fig. 22). In both cases, the use of electromechanical converters 1 helps to reduce the flow rate of compressed gas injected into the well, which is necessary to maintain the flowing mode of the gas-liquid mixture.

[0121] It is also possible to use one or more electromechanical converters 1 together with equipment for the gas lift method of producing gas-containing liquid in the case where such equipment provides for the use of two or more tubing strings. In this case, at least one additional tubing string 32 is installed around the tubing string 31, forming an annular space between the strings (Figs. 23-25). The said annular space may extend only along a part of the length of the tubing strings 31, 32, thereby forming a one-and-a-half-row lift (Fig. 25). In this case, at least one electromechanical converter 1 may be placed inside the tubing string 31 (Figs. 23 and 25), inside the annular space between the tubing strings 31, 32 (Fig. 24) and / or outside the said annular space.As in the previous case, this allows for a reduction in the consumption of compressed gas pumped into the well and, accordingly, a reduction in the requirements placed on the equipment.

[0122] To control the operation of the electromechanical converters 1, a control system 25 may be provided, which serves to supply a signal and / or electrical energy to each electromechanical converter 1 (Figs. 10-17). In the figures, the control system is shown located near the wellhead, but another placement is also possible, depending on the specific equipment used. In particular, such a control system may also be located within the well itself in close proximity to the electromechanical converters 1, for example, in an adjacent or shared housing with the submersible high-frequency oscillation generator 20.

[0123] Depending on the required functional capabilities, the control system 25 may include at least one controller and / or at least one time relay. The controller allows for a more complex control mechanism taking into account various parameters within the well, such as, for example, the pressure of the gas-containing liquid, or other necessary parameters. For this purpose, at least one sensor 34 is used, connected to the control system 25 for the purpose of transmitting signals to it that ensure the possibility of monitoring the operating parameters of the electromechanical converter 1, the gas-containing liquid and / or the gas-liquid mixture. The sensor 34 may be placed, for example, inside the container 10 of the electromechanical converter 1 (Fig. 6) or outside the container 10, in particular, near the electromechanical converter 1 (Fig. 14).The sensor 34 serves to determine one or several physical parameters of the electromechanical transducer 1 or the gas-liquid mixture, such as pressure, density, humidity based on inductive capacitance, the nature of noise and the frequency spectrum of waves in the audio range, etc., changing during the formation of the gas-liquid mixture.

[0124] Based on the results of processing the signal received from the sensor, the controller of the control system 25, on the basis of a given program, makes a decision on turning on or off the electromechanical converter 1, as well as on the required mode of its operation.

[0125] At the same time, using a time relay, it is possible to set the required operating mode of electromechanical converters 1 within specified time limits.

[0126] As noted above, electromechanical transducer 1, in any of its possible embodiments, can be used as part of downhole equipment to manipulate gas-containing fluids, for example, to manipulate oil for oil production. The method for lifting gas-containing fluids using it is proposed to be implemented as follows.

[0127] First, a string 31 of tubing pipes and at least one of the above-mentioned electromechanical converters 1 are placed in the well. When placing it, the position of the waveguides-oscillation concentrators 5, the core 2 and the winding 3 placed on it are set relative to the string 31 of tubing pipes using at least one protruding means 7 located in the zone having a zero oscillation amplitude.

[0128] In this case, at least one electromechanical transducer 1 is placed in the borehole above the saturation pressure of the gas-containing liquid. To do this, the borehole level where the pressure is lower than the saturation pressure of the liquid contained within is determined using any known method. For example, data on density variation with depth obtained during borehole surveys can be used. Thus, the desired borehole level will correspond to the zone where a rapid decrease in the density of the gas-containing liquid begins to be observed, caused by an increase in the proportion of bubbly gas in the volume of the gas-containing liquid.

[0129] After which, the electromechanical transducer 1 is placed above the detected level and electrical energy is supplied to the winding of its core 2. As a result of the action of at least one surface 6 of each waveguide-concentrator 5 of oscillations on the gas-containing liquid, the gas dissolved in the gas-containing liquid is released with the formation of a gas-liquid mixture, as described above.

[0130] The resulting gas-liquid mixture, due to the lifting energy of the released gas and the pressure at the bottom of the well, rises to its mouth, which ensures its production.

[0131] It should be noted that the presented method is based on the use of an electromechanical transducer 1, placed in the wellbore above the saturation pressure of the gas-containing liquid. To achieve this, the transducer must be placed at a depth where the pressure is lower than the saturation pressure of the gas-containing liquid, such as oil. This ensures optimal conditions for both the separation of gas from the gas-containing liquid and its preservation in an undissolved state within the gas-liquid mixture.

[0132] This method eliminates the need to introduce additional fluids, such as compressed gas, into the well to extract gas-containing liquid. This is because only the dissolved gas can be used to lift the gas-containing liquid. This reduces the number of technological steps required to install downhole equipment and reduces the time required to bring the well into production.

[0133] Furthermore, since no additional mechanical devices susceptible to external influences, particularly paraffin deposits, are required, the proposed method can be widely applied in challenging conditions. Specifically, the method can be used in conditions with high gas content or temperature of the gas-containing fluid, the presence of mechanical impurities (sand), and paraffin and / or salt deposits.

[0134] The primary gas-containing liquid suitable for use with electromechanical transducers 1 is oil, due to its ability to contain dissolved gas at elevated pressures relative to atmospheric pressure, which can be observed in underground oil deposits. However, this method can also be applied to any other liquids containing dissolved gas.

[0135] To implement this method, electrical energy is supplied to the winding of core 2 of at least one electromechanical transducer 1 based on a signal from at least one sensor 34 located in the well. To this end, control system 25, which receives signals from sensor 34 located in the well, compares the received information with a predetermined program and transmits the required signal or electrical energy to electromechanical transducers 1 based on the comparison results. Such a signal can be modified as conditions in the well change, for example, as the saturation pressure changes.

[0136] As noted above, the proposed method for extracting gas-containing fluid can also be used after the well has been killed. To achieve this, electrical energy is supplied to the winding of core 2 of at least one electromechanical converter 1 after the killing fluid has been removed from the well.

[0137] It should also be noted that several additional electromechanical converters 1 can also be placed in the well, which are located below the level of the main electromechanical converters 1.

[0138] Moreover, the level at which additional electromechanical transducers 1 are placed in the wellbore may be below the level where the wellbore pressure equals the saturation pressure of the gas-containing liquid. Such additional transducers are needed to compensate for changes in the saturation pressure level in the wellbore. Specifically, if this level shifts closer to the bottomhole, control system 25, based on a signal from the corresponding sensors 34, such as pressure sensors, will sequentially activate the additional electromechanical transducers 1 required by the prevailing conditions. Specifically, control system 25 will activate such additional transducers 1 if the pressure at the level at which they are placed is less than or equal to the saturation pressure of the gas-containing liquid. This results in more complete utilization of the wellbore's capabilities for the reliable and stable formation of a gas-liquid mixture.

[0139] In summary, it should be noted that the achievement of the above technical result in the proposed electromechanical transducer 1 is due to the simultaneous presence of several waveguide oscillation concentrators 5 on a single core 2. For example, as a result of using the proposed electromechanical transducer 1, compared to an electromechanical transducer having only one waveguide oscillation concentrator 5 (see, for example, disclosed in patent RU 2081995 C1) with similar geometric and amplitude characteristics of the latter, the area of ​​the end active surface 6 interacting with the gas-containing liquid (the total area of ​​the two waveguide oscillation concentrators 5) is approximately twice as large. Accordingly, the amount of gas released from a unit volume of the gas-containing liquid with which the active surfaces 6 interact also increases.

[0140] In this case, the use of a common core 2 allows for the use of changes in the shape and size of several of its surfaces at once, each of which contributes to the creation of oscillations transmitted to a separate active surface 6. This, accordingly, leads to the fact that the mass of the electromechanical converter 1 according to the proposed solution will be lower by the value of the mass of the core than when using two electromechanical converters simultaneously, each having one waveguide-concentrator of oscillations with its own core.

[0141] In accordance with the above, the inventions included in this group of inventions increase the amount of gas extracted from a unit volume of gas-containing liquid without significantly increasing the mass characteristics of the equipment used. This ensures reliable attachment and retention of the electromechanical transducer within the wellbore under high-frequency vibrations of the waveguide-concentrator.

[0142] The proposed downhole equipment also allows for the impact on gas-containing liquid and thereby minimizing the amount of additional equipment, in particular, it allows for the elimination of equipment required for supplying auxiliary fluids into the downhole space to extract gas-containing liquid.

[0143] The proposed solution will also enable well operation in challenging conditions, such as high gas content or fluid temperature, as well as the presence of mechanical impurities (sand), paraffin deposits, and / or salts.

[0144] In addition, the proposed method and well equipment are suitable for use in wells with high curvature (cluster and directional wells).

[0145] Thus, in experiments and wells, an electromechanical transducer with two waveguides concentrating oscillations is more efficient and, all other things being equal, releases 30-50% more gas per unit of time than an electromechanical transducer with a single waveguide concentrator. Specifically, full-scale laboratory experiments with video recording of gas release from oil with a given viscosity showed that, with a frequency of approximately 1 second, a single cluster of foam-like bubbles was released from the active surface of a single waveguide concentrating oscillation. With two waveguides concentrating oscillations, two clusters of homogeneous foam were formed simultaneously, with a frequency of 0.5 seconds, i.e., the rate of gas bubble release accelerated approximately twofold.

Claims

CLAUSES OF THE INVENTION 1. An electromechanical transducer for acting on a gas-containing liquid, characterized in that it includes a core with a winding placed thereon, formed using a material that changes its shape or dimensions when electrical energy is supplied to the winding from a high-frequency electrical oscillation generator, wherein at least one waveguide-oscillation concentrator is fixed to each of the two opposite ends of the core, each waveguide-oscillation concentrator contains at least one active surface made with the possibility of interaction with the gas-containing liquid and placed so that at least on two opposite sides of the core there is at least one surface made with the possibility of interaction with the gas-containing liquid and placed on a separate waveguide-oscillation concentrator, and on the side surface, at least,one of the waveguides-oscillation concentrators fixed to the core has at least one protruding means located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude, wherein at least one protruding means is designed with the possibility of setting the position of the waveguides-oscillation concentrators, the core and the winding located on it relative to the external suspension.

2. The converter according to paragraph 1, characterized in that the core is formed using a magnetostrictive or piezoceramic material.

3. The converter according to paragraph 1, characterized in that the side surfaces of each waveguide-oscillation concentrator are made cylindrical, conical, or have a curvilinear profile.

4. The converter according to paragraph 1, characterized in that the side surfaces of each waveguide-oscillation concentrator have a stepped shape, and the side surface of each of the steps is made cylindrical, conical, or has a curvilinear profile.

5. The converter according to paragraph 1, characterized in that the waveguide-oscillation concentrator has at least one closed or open cavity.

6. The converter according to paragraph 1, characterized in that the waveguide-oscillation concentrator has a through hole.

7. The converter according to claim 1, characterized in that at least one of the protruding means of the waveguide-oscillation concentrators is made in the form of an annular protrusion.

8. The converter according to the previous paragraph, characterized in that the annular projection is provided with a damper.

9. The converter according to the previous paragraph, characterized in that the damper is an elastomeric element fixed to the waveguide-oscillation concentrator.

10. The converter according to claim 7, characterized in that the annular protrusion contains at least one opening for the passage of a gas-containing liquid, at least one fastening means and / or at least one means for providing electrical energy to the core winding.

11. A converter according to any one of paragraphs 1-10, characterized in that it contains a container secured to at least one of the protruding means of the waveguide-oscillation concentrators.

12. The converter according to paragraph 11, characterized in that the container is designed with the possibility of interaction with an external suspension.

13. The converter according to claim 11, characterized in that the container has at least one through hole or slot for the passage of a gas-containing liquid.

14. The converter according to paragraph 11, characterized in that the container is made hermetically sealed, and the surface of each of the waveguides-oscillation concentrators, designed with the possibility of interaction with a gas-containing liquid, is located outside the container.

15. The converter according to paragraph 14, characterized in that the container contains cooling means.

16. The converter according to paragraph 15, characterized in that the cooling agent used is a cooling liquid placed inside the container to remove heat from the winding and core into the external environment through the wall of the container.

17. The converter according to paragraph 16, characterized in that the container is equipped with an additional capacity for cooling liquid.

18. The converter according to claim 16, characterized in that the container wall is provided with at least one opening for filling and / or draining the cooling liquid.

19. A converter according to any of paragraphs 16-18, characterized in that transformer oil is used as the cooling liquid.

20. A converter according to any one of paragraphs 12-18, characterized in that ribs or plates are placed on the outer and / or inner surface of the container, extending outward and / or inward of the container, respectively, and designed with the possibility of interaction with a liquid in contact with the corresponding surface of the container.

21. A converter according to any one of paragraphs 12-18, characterized in that the wall of the container is provided with at least one opening for accommodating a means for supplying electrical energy to the core winding.

22. The converter according to paragraph 11, characterized in that the container is detachable.

23. The converter according to paragraph 22, characterized in that the container includes at least one end cover having an opening for the waveguide-oscillation concentrator.

24. The converter according to paragraph I, characterized in that the container is located in a housing designed with the possibility of interaction with an external suspension.

25. The converter according to paragraph 24, characterized in that the container is secured to the body using fastening means.

26. The converter according to item 24, characterized in that at least one of the protruding means of one of the waveguide oscillation concentrators interacts with or is fixed on the inner surface of the housing.

27. A converter according to any one of paragraphs 1, 12 and 24, characterized in that the external suspension is either one of the pipes or couplings of the tubing string, or a means for securing the electromechanical converter to the tubing in the annulus, or a load-bearing cable.

28. Well equipment for influencing a gas-containing liquid, characterized in that it includes a column of tubing, at least one high-frequency oscillation generator and at least one electromechanical transducer for influencing a gas-containing liquid, containing a core with a winding placed on it, formed using a material that changes its shape or dimensions when electrical energy is supplied to the winding, wherein at least one waveguide-oscillation concentrator is fixed to each of the two opposite ends of the core, each waveguide-oscillation concentrator contains at least one active surface configured to interact with a gas-containing liquid and arranged so that at least on two opposite sides of the core there is a waveguide-oscillation concentrator with an active surface configured to interact with a gas-containing liquid, and on the lateral surface of at least one of the waveguides-oscillation concentrators fixed to the core there is at least one protruding means located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude, wherein at leastone protruding means is designed with the ability to set the position of the waveguides-oscillation concentrators, the core and the winding placed on it relative to the column of pump-compressor pipes.

29. Well equipment according to paragraph 28, characterized in that it includes a vane, screw or diaphragm pump with an electric motor.

30. Well equipment according to paragraph 29, characterized in that the electric motor is a valve electric motor.

31. Well equipment according to any of paragraphs 28-30, characterized in that at least one electromechanical converter is located inside the tubing.

32. Well equipment according to any of paragraphs 28-30, characterized in that at least one electromechanical converter is located outside the tubing.

33. Well equipment according to any of paragraphs 28-30, characterized in that it includes at least one packer installed on a tubing string.

34. Well equipment according to paragraph 33, characterized in that at least one electromechanical transducer is located in the space above and / or below the packer.

35. Well equipment according to paragraph 28, characterized in that the tubing is connected to at least one well chamber and / or at least one valve.

36. Well equipment according to paragraph 35, characterized in that the valve is a gas lift, intake or check valve.

37. Well equipment according to paragraph 35, characterized in that at least one electromechanical transducer is located inside and / or outside the well chamber.

38. Well equipment according to any of paragraphs 28-30, 34-37, characterized in that at least one additional string of tubing is installed around the tubing string, forming an annular space between the tubing strings over at least part of their length.

39. Well equipment according to paragraph 38, characterized in that at least one electromechanical converter is located inside and / or outside the annular space between the tubing strings.

40. Well equipment according to paragraph 36, characterized in that at least one electromechanical transducer is placed before and / or after the receiving valve.

41. Well equipment according to paragraph 28, characterized in that it includes at least one sensor that provides monitoring of the operating parameters of the electromechanical converter, gas-containing liquid and / or gas-liquid mixture.

42. Well equipment according to paragraph 41, characterized in that it includes a control system that provides regulation of the supply of electrical energy to at least one electromechanical converter based on a signal from at least one sensor.

43. Well equipment according to paragraph 42, characterized in that the control system includes at least one controller and / or at least one time relay.

44. A method for producing a gas-containing liquid, characterized in that a well is provided with a string of tubing, at least one high-frequency oscillation generator, and at least one electromechanical converter containing a core with a winding placed on it, formed with using a material that changes its shape or dimensions when electrical energy is supplied to the winding from a high-frequency oscillation generator, and at each of the two opposite ends of which at least one waveguide-oscillation concentrator is fixed, each waveguide-oscillation concentrator contains at least one active surface made with the possibility of interaction with a gas-containing liquid and placed so that at least on two opposite sides of the core there is at least one surface made with the possibility of interaction with a gas-containing liquid and placed on a separate waveguide-oscillation concentrator, when placing at least one electromechanical converter in the well, the position of the waveguides-oscillation concentrators, the core and the winding placed on it relative to the tubing string is set using at least one protruding means,which is placed on the side surface of at least one of the waveguide-oscillation concentrators fixed to the core and is located in the zone of the corresponding waveguide-oscillation concentrator having a zero oscillation amplitude, wherein at least one electromechanical converter is placed in the well above the saturation pressure level of the gas-containing liquid, then electrical energy is supplied to the winding of the core of at least one electromechanical converter, and the gas dissolved in the gas-containing liquid is released with the formation of a gas-liquid mixture by the action of at least one active surface of each waveguide-oscillation concentrator on the gas-containing liquid and the rise of the gas-liquid mixture to the surface due to the lifting energy of the released gas and the pressure at the bottom of the well.

45. A method for producing gas-containing liquid according to paragraph 44, characterized in that electrical energy is supplied to the winding of the core of at least one electromechanical converter, based on a signal from at least one sensor located in the well.

46. ​​A method for producing gas-containing liquid according to paragraph 44, characterized in that electrical energy is supplied to the winding of the core of at least one electromechanical converter after the killing solution has been removed from the well.

47. A method for producing a gas-containing liquid according to paragraph 44, characterized in that at least one additional electromechanical converter is placed in the well below the electromechanical converter located above the saturation pressure level of the gas-containing liquid.

48. A method for producing gas-containing liquid according to paragraph 47, characterized in that electrical energy is supplied to the winding of the core of at least one additional electromechanical converter, based on a signal from at least one sensor located in the well.

49. The method for extracting gas-containing liquid according to paragraph 48, characterized in that the supply of electrical energy to the winding of the core of at least one additional electromechanical converter is carried out in the event that the pressure at the level of its placement is less than or equal to the saturation pressure of the gas-containing liquid.

50. A method for extracting a gas-containing liquid according to paragraph 44, characterized in that at least one protruding means, located on the side surface of at least one waveguide-oscillation concentrator, has at least one opening for the passage of at least one means that provides the supply of electrical energy to the core winding.

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