RU2824938C1 - Electromechanical converter, downhole equipment and method of extraction of gaseous liquid - Google Patents

Abstract

FIELD: pumping equipment.

SUBSTANCE: proposed group of inventions relates to the field of pumping equipment that provides pumping of a gas-containing liquid by exposing it to a medium released from the gas-containing liquid itself. To extract the gas-containing liquid, pumping and compressor pipes and at least one electromechanical converter are placed in the well. At least one oscillation concentrator waveguide is fixed at each of the two opposite ends of the latter, acting on a gaseous liquid from two opposite sides of the converter core. The position of the electromechanical transducer in the well is set using a protruding means available on oscillation concentrator waveguides in the zone of zero oscillation amplitude. The electromechanical converter is placed in the well above the saturation pressure level of the gas-containing liquid, electrical energy is supplied to the winding of its core and the gas dissolved in the gas-containing liquid is released to form a gas-liquid mixture and the gas-liquid mixture is lifted to the surface due to the lifting energy of the released gas and pressure at the bottom of the well.

EFFECT: technical result is to increase the amount of gas released from a unit volume of a gas-containing liquid, without significantly increasing the mass characteristics of the equipment used, ensuring reliable fastening and retention of the electromechanical converter inside the well in conditions of high-frequency vibrations; the proposed solution makes it possible to abandon equipment for supplying auxiliary fluids to the borehole space to extract a gas-containing liquid.

50 cl, 25 dwg

Description

The field of technology to which the invention relates.

The group of inventions relates to the field of pumping equipment that ensures the pumping of a gas-containing liquid by acting on it with a medium released from the gas-containing liquid itself. In particular, the invention can be used in a means that ensures the lifting of gas-containing liquids from underground containers, including wells, in well equipment that includes such lifting means, as well as in implementing a method for lifting a gas-containing liquid from a well to its wellhead.

In the presented solution, it is proposed to lift liquid from a well using gas, which, under the conditions of its storage, is in the gas-containing liquid itself in a dissolved state. Such liquids, first of all, may include oil with an increased or high gas content. At the same time, the presented invention can also find application for other liquids containing gases in a dissolved state.

State of the art.

A technical solution is widely known from the state of the art concerning a method for lifting a gas-containing liquid, for example, oil, consisting of injecting compressed gas (for example, air, nitrogen, methane, etc.) into a formation and thereby lifting the gas-containing liquid to the wellhead (gas lift method). This method is implemented by placing gas lift valves on the tubing string, for example, in the form of check valves consisting of a valve pair in the form of a seat and a shut-off element (for example, a ball), or other valve devices that ensure, if necessary, the supply of compressed gas to the oil layer for its lifting to the wellhead. Also, well chambers with an elliptical cross-section and ensuring the installation and removal of the corresponding valves can be used to install the valves. The valves are installed in the side cavity of the well chamber using rope technology, 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., Equipment and Technology for Oil and Gas Production and Preparation, Moscow, Energy Press, 2013, Vol. I, pp. 87-91, Fig. 2.17 and 2.18).

This method of lifting gas-containing liquid is widely used in the field of oil production, but it has one significant drawback that underlies this method - its implementation requires the presence of compressor units that provide purification and supply of compressed gas, as well as means that supply gas to the well (columns of air pipes, special valves, etc.). Thus, this method requires a large amount of special equipment for its implementation and use in the well.

Also known from the prior art is a means for creating a gas lift using gases present in the gas-containing liquid itself. In particular, such a means is based on high-frequency action on the gas-containing liquid, as a result of which it is degassed and dissolved gases are released. Such a means is based on the use of an electromechanical converter containing a winding and a core made of magnetostrictive material placed in a container. A waveguide-concentrator of oscillations is attached to one of the ends of the core, having a through hole and fixed to a partition inside the container. When using such a converter, the gas-containing liquid is freed from the gases dissolved in it and rises to the wellhead as part of a gas-liquid mixture (see RU°2081995°C1, published 20.06.1997, fig.).

This solution allows using gases present in the liquid itself to lift the gas-containing liquid, and thus eliminates the need for equipment required to pump gases into a well during gas lift production. However, given the design features of this solution, where the gas-containing liquid is interacted with, for the most part, by just one oscillation waveguide concentrator, this solution also has certain drawbacks. Thus, the standing wave formed in the oscillation waveguide concentrator results in the presence of areas in it that are not active and, accordingly, less suitable for influencing the gas-containing liquid. As a result, the oscillation waveguide concentrator is designed so that the area where its end surface interacts with the gas-containing liquid is located has the greatest oscillation amplitude. This design is the most optimal in terms of material and energy costs required to create a high-frequency effect on the said liquid, carried out in a resonant mode to ensure cavitation of the gas-containing liquid at the level of the saturation pressure of the latter. At the same time, the presence of inactive zones of the waveguide-concentrator of oscillations with a low impact on the gas-containing liquid (working outside of resonance and, accordingly, without achieving cavitation of the gas-containing liquid) causes the need to search for solutions to increase the efficiency of gas extraction using an electromechanical converter, and, consequently, to increase the productivity of the well when using it.

The technical problem is to eliminate the above-mentioned shortcomings of known solutions. In particular, the task is to increase the efficiency of gas extraction from gas-containing liquid, increase the productivity of the well when extracting such liquid, and simplify the technological operations necessary to put the well into operation.

Disclosure of the essence of the invention.

The technical result achieved by using the claimed electromechanical converter and the downhole equipment equipped with it consists in increasing the amount of gas released from a unit volume of gas-containing liquid, without a significant increase in the mass characteristics of the equipment used. At the same time, reliable fastening and retention of the electromechanical converter inside the well is ensured under conditions of high-frequency vibrations of the oscillation concentrator waveguide.

The technical result is achieved in that the electromechanical converter 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 oscillation concentrator waveguide comprises 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 belonging to a separate oscillation concentrator waveguide, and on the side surface of at least one of the oscillation concentrator waveguides fixed to the core there is at least one projecting means, located in the zone of the corresponding oscillation concentrator waveguide, having a zero oscillation amplitude. In this case, at least one projecting means is made with the possibility of setting the position of the oscillation concentrator waveguides, the core and the winding placed on it relative to the external suspension.

In the present invention, the key element of the electromechanical transducer is the "waveguide-concentrator of oscillations". It is important to note that in ultrasonic technology, solid-state acoustic waveguides are also called any devices of the sound duct type (rods, concentrators) used to transmit oscillatory energy at a certain distance from the source or to introduce oscillatory energy into any 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 design element, which is characterized by its two functions. Firstly, this element serves to transmit the wave (i.e., it is a waveguide), and secondly, due to its shape, it provides an increase in the oscillation intensity at the end (i.e., it is a concentrator). Both of these functions, both in the claimed design and in similar solutions from the prior art, are implemented simultaneously.

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

The achievement of the above technical result in the proposed electromechanical converter is due to the simultaneous presence of several waveguides-oscillation concentrators. Thus, one waveguide-oscillation concentrator is located at the end of the core opposite to the attachment point of the other waveguide-oscillation concentrator. As a result, a longitudinally elongated structure is formed, which is in good agreement with the well's intra-pipe space (the length along the well axis is much greater than across the axis), which contributes to its more convenient installation and placement relative to the existing suspension on the well equipment. In particular, such a suspension can be a column and couplings of pump-compressor pipes or other auxiliary fastening means that ensures the positioning of the waveguide-oscillation concentrator relative to the column of pump-compressor pipes.

In addition, the above-mentioned implementation results in the two zones with the largest oscillation amplitudes, which contact with the gas-containing liquid, being located on both sides of the core. As a result, after interaction with one of such surfaces, partial release of gas from such liquid occurs. In the case of movement of the gas-liquid mixture towards the wellhead, for example, due to the lifting energy of the released gas under the conditions of the pressure present at the well bottom, the gas-liquid mixture also interacts with the surface of the other waveguide-oscillation concentrator, made with the possibility of interaction with the gas-containing liquid.

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 well axis, and simultaneously, if the diameter of the well or the column of corresponding pipes at the place of installation of the electromechanical converter allows it to be placed across or at an angle to the well axis.

As a result, additional gas extraction occurs from the gas-containing liquid present in the gas-liquid mixture. This ensures an increase in the surface of the electromechanical converter that affects the gas-containing liquid in the confined conditions of the well space, and an increase in the amount of gas released from a unit volume of the gas-containing liquid.

For both waveguides-concentrators, one common core with a winding is used, which allows to somewhat reduce the mass characteristics of the electromechanical converter in comparison with the use of two converters with their own waveguide-concentrator of oscillations. Such an implementation also allows to significantly increase the inter-repair period of the core with the winding in case of its location in the flow without a protective container. This is due to the fact that the waveguide-concentrator of oscillations acts, among other things, as a protective means perceiving the impact of the flow of gas-containing liquid. Thus, when placing waveguides-concentrators of oscillations on the core, they will cover the corresponding surfaces of the core from erosion or any other impact, which may be caused by direct contact with the gas-containing liquid and the solid particles and impurities present in it.

In this case, the placement of the projecting means, providing the positioning of the electromechanical converter relative to the suspension, in the zone with zero amplitude of oscillations helps to reduce the transmission of oscillations to the latter. Thus, a more reliable retention of the electromechanical converter is achieved due to the maximum possible reduction of the transmitted high-frequency oscillations through such a positioning means under conditions of high-frequency vibrations of the waveguide-concentrator of oscillations and interaction with the resulting gas bubbles.

As a result, an increase in the amount of gas released from a unit volume of gas-containing liquid is ensured without a significant increase in the mass characteristics of the equipment used. At the same time, such an implementation of the electromechanical converter facilitates its reliable fastening and retention inside the well under conditions of high-frequency vibrations of the waveguide-concentrator of oscillations.

The technical result is also achieved by the fact that the side surfaces of each waveguide-oscillation concentrator are made cylindrical, conical or have a curvilinear profile. In particular, 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.

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

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

The annular protrusion contains at least one opening for the passage of a gas-containing liquid or for accommodating at least one fastening means or for accommodating at least one means that ensures the supply of electrical energy to the core winding.

According to a preferred embodiment of the invention, the electromechanical converter may contain a container secured to at least one of the projecting means of the oscillation concentrator waveguides. Such a container is designed with the possibility of interaction with an external suspension.

In one embodiment, the container has at least one through hole or slot for the passage of gas-containing liquid. In another embodiment, the container is made hermetic, and the surface of each of the waveguides-oscillation concentrators, made with the possibility of interaction with the gas-containing liquid, is located outside the container.

If the container is made hermetically sealed, it may contain cooling means. The cooling means may be a cooling liquid placed inside the container to remove heat from the winding and core to the external environment through the container wall. The container may have an additional capacity for the cooling liquid, and its wall may have at least one opening for filling and/or draining the cooling liquid. Transformer oil is preferably used as a cooling liquid.

On the outer and/or inner surface of the container, ribs or plates may be placed, located on the outer and/or inner wall of the container, respectively, and made with the possibility of interaction with the liquid contacting the corresponding surface of the container. These ribs or plates serve to increase the area of contact with the cooling or gas-containing liquid and, accordingly, to intensify heat exchange with them.

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

It is also possible to make the container detachable. In this case, the container includes at least one end cap having an opening for the oscillation concentrator waveguide.

The container may also be located in a housing made with the possibility of interaction with an external suspension, and may be fixed to it using fastening means. In this case, it is also possible that at least one of the protruding means of one of the waveguides-oscillation concentrators interacts with or is fixed on the inner surface of the housing.

The external suspension is usually either one of the pipes or couplings of the tubing string, or a means for securing the electromechanical converter to the tubing in the annular space, or to the load-carrying cable.

Another invention of the group relates to downhole equipment for influencing a gas-containing liquid, in particular for the purpose of its extraction, comprising the above-mentioned electromechanical converter. In particular, the downhole equipment comprises a column of pump-compressor pipes, at least one high-frequency oscillation generator and at least one electromechanical converter for influencing a gas-containing liquid. The converter comprises 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 comprises at least one active surface, made with the possibility of interaction with the gas-containing liquid and placed so that 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 belonging to a separate waveguide-oscillation concentrator. On the side surface of at least one of the oscillation concentrator waveguides fixed to the core, there is at least one projecting means located in the zone of the corresponding oscillation concentrator waveguide having a zero oscillation amplitude. At the same time, at least one projecting means is made with the possibility of setting the position of the oscillation concentrator waveguides, the core and the winding located thereon relative to the column of pump and compressor pipes.

This technical solution, due to the use of an electromechanical converter, also retains all the advantages of using the latter. In particular, in view of the above circumstances, the result is achieved, consisting in increasing the amount of gas released from a unit volume of gas-containing liquid without a significant increase in the mass characteristics of the equipment used. In addition, such an implementation of the electromechanical converter contributes to its reliable fastening and retention inside the well relative to the column of pump-compressor pipes under conditions of high-frequency vibrations of the waveguide-concentrator of oscillations. Thus, the proposed downhole equipment allows for the impact on the gas-containing liquid and minimizes the amount of additional equipment, in particular, allows for abandoning the equipment necessary for feeding auxiliary fluids into the well space.

At the same time, such downhole equipment can also be used in combination with other known equipment for producing 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 alternate use of such equipment.

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

In the case of such an implementation, it is possible to combine the widely known pump method of feeding wellbore fluid to the wellhead and the proposed method based on the use of electromechanical converters. Thus, depending on the current conditions in the well, namely, on the current measured pressure at the location of the electromechanical converter and the saturation pressure of the gas-containing liquid, it is possible to use the most preferable method for lifting the wellbore fluid in the current conditions, achieving the greatest energy efficiency of the equipment.

It should also be noted that various combinations of placement of the electromechanical converter are possible when using downhole equipment. In particular, at least one electromechanical converter can be placed inside and/or outside the pump and compressor pipes.

If it is necessary to use packers to organize the movement of gas-containing liquid, the well equipment may include at least one packer installed on the tubing string. At the same time, at least one electromechanical converter may be placed in the space above and/or below the packer.

The above-mentioned advantages from the combined use of the proposed solution with another method for lifting gas-containing liquid can be achieved in combination not only with the above-mentioned pumping method, but also in combination with the gas-lift method of 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, intake or check valve, which are connected to the tubing. In this case, at least one electromechanical converter may be located inside and/or outside the downhole chamber.

Also, at least one additional tubing string may be installed around the tubing string, with the formation of an annular space between the tubing strings at least over a portion of their length. In this case, at least one electromechanical converter may be placed inside and/or outside the annular space between the tubing strings.

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

Also, during the operation of electromechanical converters, the parameters of the gas-containing liquid can be monitored. This can be useful both for regulating the operating mode of the electromechanical converter itself and for connecting and/or disconnecting auxiliary equipment, such as, for example, the above-mentioned vane pump or a remotely controlled valve. In this case, the downhole equipment can include at least one sensor that ensures monitoring of the operating parameters of the electromechanical converter, gas-containing liquid and/or gas-liquid mixture.

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.

Another invention of the group relates to a method for producing gas-containing liquid, carried out using an electromechanical converter. To implement such a method, a column of pump-compressor pipes, at least one high-frequency oscillation generator, and at least one electromechanical converter are placed in a well, containing a core with a winding placed on it, formed using a material that changes its shape or dimensions when electric energy is supplied to the winding from the high-frequency oscillation generator, and at each of the two opposite ends of which at least one oscillation waveguide concentrator is fixed. Each oscillation waveguide 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 belonging to a separate oscillation waveguide concentrator. When placing at least one electromechanical converter in the well, the position of the oscillation concentrator waveguides, 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 oscillation concentrator waveguides fixed to the core and is located in the zone of the corresponding oscillation concentrator waveguide having a zero oscillation amplitude. 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 to form a gas-liquid mixture by acting on at least one active surface of each oscillation waveguide concentrator on the gas-containing liquid and raising the gas-liquid mixture to the surface due to the lifting energy of the released gas and the pressure at the well bottom.

The use of this method, in addition to the above advantages, consisting in increasing the amount of gas released from a unit volume of gas-containing liquid without a significant increase in the mass characteristics of the equipment used, as well as in reliable fastening and retention of the electromechanical converter inside the well, also contributes to obtaining additional advantages. These may include, in particular, the absence of the need to supply additional media to extract gas-containing liquid from the well, since the gas dissolved in it is used to lift the liquid. This, accordingly, leads to a decrease in the number of technological operations required to place the well equipment, and to a decrease in the time required to put the well into operation.

It should be additionally noted that, in view of the possible change in conditions inside the well, it is also advisable to provide for the possibility of controlling the electromechanical converter in order to use the proposed method, which will allow selecting the conditions for its activation for the most efficient operation. In this regard, when implementing the method, electrical energy is supplied to the core winding of at least one electromechanical converter, for example, via a submersible cable, based on a signal from at least one sensor located in the well.

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 solution has been removed from the well.

Also, within the framework of the proposed method, it is possible to use several electromechanical converters placed sequentially along the well axis. For this purpose, 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.

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 placed 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.

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

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

In view of the above, the use of the presented electromechanical converter, including as part of well equipment, ensures the achievement of a result consisting in an increase in the amount of gas released from a unit volume of gas-containing liquid, without a significant increase in the mass characteristics of the equipment used. In addition, reliable fastening and retention of such a converter inside the well is ensured.

At the same time, 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.

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.

Brief description of the drawings.

The presented group of inventions is explained by the following figures.

Fig. 1 – shows the general view of the electromechanical converter;

Fig. 2 – shows an electromechanical converter mounted on an external suspension;

Fig. 3 – shows an electromechanical converter placed in a sealed container;

Fig. 4 – shows an electromechanical converter placed in a sealed container inside the housing;

Fig. 5 – shows an electromechanical converter placed in a container with holes;

Fig. 6 – shows an electromechanical converter placed in a container with holes inside the housing;

Fig. 7 – schematically shows an additional stage of the waveguide-oscillation concentrator with an opening;

Fig. 8 and 9 show longitudinal and cross-sectional views of a container for an 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;

Fig. 14-17 – schematically show possible options for placing an electromechanical converter with a submersible high-frequency oscillation generator in a well together with pumping equipment;

Fig. 18-19 – schematically show a variant of using an electromechanical converter for developing a well after it has been killed;

Fig. 20-25 – schematically show options for using an electromechanical converter together with equipment for gas-lift production of gas-containing liquid.

Legend:

1 – electromechanical converter;

2 – core;

3 – winding;

4 – electric cable;

5 – waveguide-oscillation concentrator;

6 – active surface of the waveguide-oscillation concentrator;

7 – protruding means of the waveguide-concentrator of oscillations;

8 – suspension of electromechanical converter;

9 – fastener;

10 – electromechanical converter container;

11 – damper;

12 – holes in the protruding means of the waveguide-oscillation concentrator;

13 – internal sealed cavity of the container;

14 – container end cap;

15 – through holes or slots in the container;

16 – through holes in the waveguide-oscillation concentrator;

17 – blind hole in the waveguide-oscillation concentrator;

18 – body;

19 – means for fastening the container to the body;

20 – high-frequency oscillation generator;

21 – plates or ribs of the container;

22 – packer;

23 – valve;

24 – pump;

25 – control system;

26 – layer;

27 – well chamber;

28 – additional stage of the waveguide-oscillation concentrator;

29 – openings in the container for placing the means of supplying electrical energy;

30 – a hole in the element of fastening to the suspension, used to place the means of supplying electrical energy;

31 – column of pump and compressor pipes;

32 – additional column of pump and compressor pipes;

33 – thread for attaching the body to the suspension;

34 – sensor.

Implementation of the invention.

As shown in Fig. 1 of the drawings of the invention, the electromechanical transducer 1 for acting on a gas-containing liquid includes a core 2 with a winding 3 of conductive cores or wires placed on it, formed using a magnetostrictive or piezoceramic material. The use of the said materials allows the core 2 to change its shape or dimensions when electrical energy, including high frequency, is supplied to the winding 3. As a result, periodic elongation and compression of the core 2 occurs and, thereby, mechanical vibrations with an ultrasonic frequency are generated.

On the inner side of winding 3, in the area of wire bends, on core 2, an elastomer or polymer cushion or other elastic means can be placed, helping to preserve the conductive cores from abrasion (not shown in the Fig.). Such a means can also be placed between the flat outer surface of core 2 and winding 3.

The supply of electrical energy to the winding 3 is carried out by means of an electrical cable 4 (Fig. 2), which is connected to a high-frequency oscillation generator 20 installed on the surface at the wellhead (Fig. 10-13), and runs along the column 31 of pump-compressor pipes. At the same time, such a high-frequency oscillation generator 20 can also be placed in the well, for example, in one or in different housings at the location of the electromechanical converter 1 (Fig. 14-17).

At each of the two opposite ends of the core 2 of the electromechanical converter 1, at least one waveguide in the form of an oscillation concentrator (oscillation waveguide concentrator 5) is fixed (Fig. 1). Each oscillation waveguide concentrator 5 contains at least one active surface 6, made with the possibility of interaction 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, made with the possibility of interaction in the cavitation mode with a gas-containing liquid, and arranged on a separate oscillation waveguide concentrator 5. Thus, the electromechanical converter 1, with the presence of only one core, makes it possible to place twice as many active surfaces of the oscillation waveguides-concentrators 5, serving for interaction with a gas-containing liquid. As a result, the efficiency of gas extraction 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.

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

On the side surface of at least one of the oscillation waveguide 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.

In this part it should be noted that this means 7 (annular projection) is located in the zone of the waveguide-concentrator of oscillations 5, where vibration and oscillations are essentially absent. This is due to the fact that the waveguide-concentrator of oscillations 5 is made so that the distance from the protruding means 7 to each end surface of the waveguide-concentrator of oscillations 5 is half the length of the wave obtained. As a result, the amplitude of the standing wave formed in the zone of placement of the protruding means 7 will have a zero value.

Thus, for example, the waveguide-concentrator 5 of oscillations can be made stepped with the length of each step equal to half the length of the received wave, and the projecting means 7 is placed between these steps. In this case, the lateral surface of each of the steps is made cylindrical, conical or can have a curvilinear profile. Fig. 1 shows the waveguide-concentrator 5 of oscillations, having a stepped shape with two steps having a cylindrical lateral surface. At the same time, the number of said steps can be greater.

As a result of the specified implementation of the waveguide-concentrator 5 of oscillations, the transmission of oscillations through the protruding means 7 to the external suspension 8, for example, one of the pipes of the column 31 of the pump-compressor pipes (Fig. 2) is reduced to a minimum. This increases the reliability of holding the electromechanical converter relative to such a suspension 8, and, consequently, the reliability of fastening the electromechanical converter inside the well is also increased under conditions of high-frequency vibrations of the waveguide-concentrator of oscillations and interaction with the resulting gas bubbles.

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

As shown in Fig. 2, the protruding means 7 is designed with the possibility of setting 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 the pump-compressor pipes (Fig. 2), or a means ensuring the fastening of the electromechanical converter to the pump-compressor pipes from their outer side in the annular space, or a load-bearing cable, or another fastening means, such as a coupling, a sub, etc.

It should also be noted that due to the implementation of the protruding means 7 in the form of an annular protrusion, it is necessary to organize the movement of a gas-containing liquid through said protrusion, 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 protrusion for the passage of a gas-containing liquid (Fig. 5), for placing a fastening means 9 (Figs. 2 and 5) or a means that ensures the supply of electric energy to the winding of the core 2, such as an electric cable 4 (Fig. 5).

Also, a closed or unclosed cavity, in particular, a through hole 16 can be made in the oscillation concentrator waveguide 5 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 oscillation concentrator waveguide 5 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 unclosed cavity of each oscillation concentrator waveguide 5 in the form of a blind hole 17 having a thread for connecting an additional stage 28 of the oscillation concentrator waveguide (Fig. 4). Such an additional stage 28 allows, depending on production needs, to change the area of the active end surface 6 of the oscillation concentrator waveguide 5, as well as the oscillation amplitude.

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 oscillation waveguide 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 oscillation waveguide concentrator 5 (Figs. 3, 5 and 6).

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.

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 flow of gas-containing liquid to be organized through its internal cavity and, thereby, for heat to be removed 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, which facilitate the removal of heat from the winding 3 and the core 2 into the external gas-containing liquid.

A cooling liquid, for example, transformer oil, placed inside container 10 for heat transfer from winding 3 and core 2 to the external environment through the wall of container 10, can be used as such a cooling agent. Filling container 10 with transformer oil, as well as draining it, is carried out through an opening made in its wall. In this case, to place oil in container 10, it can be equipped with an additional tank, from which oil can be fed into cavity 13 either forcibly, using a pump, or by gravity.

In addition, for additional enhancement of heat exchange between the wall of the container 10 and the gas-containing liquid or transformer oil, ribs or plates 21 with an increased area are placed on the corresponding wall, extending outward (Figs. 8 and 9) and/or inward of the container (not shown in the Fig.). With the help of the said ribs or plates 21, the heat exchange surface with the corresponding liquid increases and it is possible to transfer a greater amount of heat per unit of time, which contributes to more intensive cooling of the core 2 and winding 3.

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 electric energy to the core winding, such as an electric cable, a sealed spark plug, a current lead or any other suitable means. It is also possible to have a variant of embodiment in which the means for supplying electric energy to the core winding passes through an opening (not shown in the Fig.) in the wall of the housing 18 or through an opening 30 present on one of the elements for connection with the suspension 8, for example, made in the form of one of the pipes of the column 31 of the pump-compressor pipes (Fig. 2).

Along with the above-mentioned container 10, a housing 18 (Fig. 4 and 6) can also be used to accommodate the electromechanical converter 1 inside the well. Such housing 18 serves to secure the electromechanical converter 1 to the external suspension 8. In the particular case of implementing the suspension 8 in the form of one of the pipes of the column 31 of pump-compressor pipes, such housing 18 can be placed between two adjacent pipes of the said column. For this purpose, a thread 33 (Fig. 6) or other fastening means can be made on the end parts of the housing 18, ensuring its fastening either directly to the corresponding pipe of the column 31 or through a sub.

The fastening of the electromechanical converter 1 inside such a housing 18 is carried out either by means of fastening means 19, connecting 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 fastened to it. A combination of the specified fastening methods is also possible.

The electromechanical converter operates as follows. When high-frequency electrical oscillations are supplied from the generator 20 to the winding 3 of the core 2, the shape or size of the latter changes periodically. Moreover, such a change affects both ends of the core, on which the waveguide-concentrators 5 of oscillations are fixed. As a result, on the surface 6 of each waveguide-concentrator 5 of oscillations, interacting with the gas-containing liquid, rarefaction zones in the form of vacuum cavities arise. 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, do not allow its surface to accurately follow the high-frequency oscillations of the surface 6. In this case, the resulting cavities are instantly filled with gas released from the gas-containing liquid due to the fact that the pressure in them is lower than the saturation pressure of the gas-containing liquid. Thus, gas bubbles are formed, which, under the action of gravitational forces, rise upward to the wellhead. As a result, using the electromechanical converter 1, a gas-liquid mixture can be obtained, which can have various applications, including for lifting gas-containing liquid to the wellhead.

In this case, the presence of waveguides-concentrators 5 of oscillations on both sides of the core 2 contributes to an increase in the area of the active surface 6 of the electromechanical converter, which has an effect on the gas-containing liquid in the cramped conditions of the well space, and an increase in the amount of gas released from a unit volume of the gas-containing liquid. In this case, the mass characteristics of the electromechanical converter due to such implementation increase to an insignificant degree.

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.

The above-mentioned electromechanical transducer 1 in any of the possible embodiments thereof may be used as part of downhole equipment for influencing a gas-containing liquid, for example, for influencing oil for the purpose of its extraction. In this case, the downhole equipment includes at least one high-frequency oscillation generator 20, a column 31 of pump-compressor 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 5 of oscillations will set the position of the waveguides-concentrators 5 of oscillations, 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 column 31 of pump-compressor pipes.

In various embodiments, the electromechanical converter can be placed inside the tubing string 31 (Figs. 10 and 12) or outside the tubing string 31 in the annular space (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 it is also possible 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.

The above-mentioned variants of placement of electromechanical converters 1 can 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), can be placed on the column 31 of pump-compressor pipes. In such a case, the electromechanical converter can also be placed inside (Figs. 14 and 16) or outside (Figs. 15 and 17) the column 31 of pump-compressor pipes in the annular space. In the latter case, such placement of electromechanical converters 1 provides the possibility of access to the drain valve located above the pump 24, and allows the use of a rope tool or crowbar to knock down the drain valve in order to facilitate killing the well.

It is also possible to use electromechanical transducers 1 together with one or more packers 22 for cutting off 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 cutting off 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.

In a preferred embodiment, one or more electromechanical converters 1 can be used to develop the well. In this case, after the well is killed, gas is forced into the annular space from the wellhead (Figs. 18 and 19). After the killing solution is extracted, the electromechanical converters 1 are started. At the same time, the back pressure on the formation decreases and a fresh influx of gas-containing liquid begins to flow from it. Under the action of the formation pressure, the well enters the flow mode of operation. In this case, the use of electromechanical converters 1 (Figs. 18 and 19) ensures the formation of a gas-liquid mixture, with the help of which the well can be developed faster and is capable of reaching a higher flow rate.

In this embodiment, it is possible to combine electromechanical converters 1 with valve 23, for example, a check valve, which helps organize the movement of liquid in the well space (Fig. 19).

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.

In this case, the electromechanical converters 1 can be used together with at least one borehole 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 converter 1 can be placed inside the borehole chamber 27 (Fig. 20) and/or outside it. Also, one or more electromechanical converters 1 can be placed before the valve 23, for example, a receiving valve (Fig. 20) and/or after such a valve 23.

In the event that the gas lift method of oil production is organized using the annular space for feeding compressed gas into the well, then one or more electromechanical converters 1 are placed inside the column 31 of pump-compressor pipes (Fig. 21). If a different scheme is used - with the supply of compressed gas through the column 31 of pump-compressor pipes, then one or more electromechanical converters 1 are placed in the annular space (Fig. 22). In both of these 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.

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

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 as 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 inside the well itself in the immediate vicinity of the electromechanical converters 1, for example, in an adjacent or the same housing with the submersible generator 20 of high-frequency oscillations.

Depending on the required functional capabilities, the control system 25 may include at least one controller and/or at least one time relay. In this case, the controller allows for a more complex control mechanism taking into account various parameters inside the well, such as, for example, the pressure of the gas-containing liquid, or other required 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, ensuring 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, next to the electromechanical converter 1 (Fig. 14). Sensor 34 serves to determine one or several physical parameters of the electromechanical transducer 1 or gas-liquid mixture, such as pressure, density, humidity based on induction capacity, the nature of noise and the frequency spectrum of waves in the audio range, etc., changing during the formation of the gas-liquid mixture.

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

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.

As already noted above, the electromechanical converter 1 in any of the possible variants of its implementation can be used as part of downhole equipment to act on a gas-containing liquid, for example, to act on oil for the purpose of its extraction. In this case, the method of lifting a gas-containing liquid using it is proposed to be implemented as follows.

First, a column 31 of pump-compressor 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-concentrators 5 of oscillations, the core 2 and the winding 3 placed on it are set relative to the column 31 of pump-compressor pipes using at least one protruding means 7 located in the zone having a zero oscillation amplitude.

In this case, at least one electromechanical transducer 1 is placed in the well above the saturation pressure level of the gas-containing liquid. For this purpose, the level in the well where the pressure is lower than the saturation pressure of the liquid contained therein is determined by any known method. For example, the data on the change in density with depth obtained during the well study can be used. Thus, the sought-after level in the well 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 bubble gas in the volume of the gas-containing liquid.

After which the electromechanical converter 1 is placed above the level found 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.

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 extraction.

It should be noted that the presented method is based on the use of an electromechanical converter 1 when it is placed in a well above the saturation pressure of the gas-containing liquid. For this, such a converter must be placed at a depth at which the pressure will be lower than the saturation pressure of the gas-containing liquid, for example, oil. In this case, the most optimal conditions are provided both for the separation of gas from the gas-containing liquid and for maintaining it in an undissolved state in the gas-liquid mixture.

At the same time, the use of this method allows to refuse from supplying additional media, for example, compressed gas into the well to extract gas-containing liquid from it. This is due to the fact that only the gas dissolved in it can be used to lift the gas-containing liquid. As a result, the number of technological operations required for the placement of well equipment is reduced and the time required to put the well into operation is reduced.

In addition, since no additional mechanical devices are required that are subject to external influences, in particular paraffinization, the proposed method can be widely used in complicated conditions. In particular, the method can be used in conditions of high gas content or temperature of the gas-containing liquid, the presence of mechanical impurities (sand), paraffin deposits and/or salts.

The main gas-containing liquid applicable for use with electromechanical converters 1 is oil due to its ability to contain dissolved gas under pressure increased relative to atmospheric pressure, which is typical for underground oil deposits. At the same time, such a method can be applied to any other liquids containing gas in a dissolved state.

To implement this method, electrical energy is supplied to the winding of the core 2 of at least one electromechanical converter 1 based on a signal from at least one sensor 34 located in the well. For this purpose, the control system 25, which receives signals from the sensor 34 located in the well, compares the received information with a specified program and transmits the necessary signal or electrical energy to the electromechanical converters 1 based on the comparison results. In this case, such a signal can be modified when the conditions in the well change, for example, when the saturation pressure level changes.

As noted above, the proposed method for extracting gas-containing liquid can also be used after killing the well. For this purpose, electrical energy is supplied to the winding of the core 2 of at least one electromechanical converter 1 after the killing solution has been removed from the well.

It should also be noted that several additional electromechanical converters 1 may also be placed in the well, which are placed below the level of placement of the main electromechanical converters 1.

In this case, the level at which additional electromechanical converters 1 are placed in the well may be lower than the level where the pressure in the well is equal to the saturation pressure in the gas-containing liquid. Such additional converters are needed to compensate for changes in the saturation pressure level in the well. In particular, if the said level shifts in the well closer to the bottomhole, then the control system 25, based on a signal from the corresponding sensors 34, for example, pressure sensors, will sequentially include the additional electromechanical converters 1 required by the prevailing conditions. In particular, the control system 25 will connect such additional converters 1 if the pressure at the level of its placement is less than or equal to the saturation pressure of the gas-containing liquid. As a result, a more complete use of the well's capabilities is ensured for the reliable and stable formation of a gas-liquid mixture.

Summarizing the above, it should be noted that the achievement of the above technical result in the proposed electromechanical converter 1 is due to the simultaneous presence of several waveguides-oscillation concentrators 5 on one core 2. For example, as a result of using the proposed electromechanical converter 1, in comparison with an electromechanical converter 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, approximately twice as large an area of the end active surface 6 interacting with the gas-containing liquid (the total area of two waveguides-oscillation concentrators 5) is obtained. Accordingly, the amount of gas released from a unit volume of the gas-containing liquid with which the active surfaces 6 interact also increases.

In this case, the use of a common core 2 allows the use of a change 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.

In accordance with the above, the inventions included in the presented group of inventions provide an increase in the amount of gas released from a unit volume of gas-containing liquid without a significant increase in the mass characteristics of the equipment used. At the same time, reliable fastening and retention of the electromechanical converter inside the well under conditions of high-frequency vibrations of the waveguide-concentrator of oscillations is ensured.

The proposed downhole equipment also allows for the impact on gas-containing liquid and, thus, minimizes the amount of additional equipment, in particular, allows for the elimination of equipment required for the supply of auxiliary fluids into the downhole space for the extraction of gas-containing liquid.

The proposed solution will also allow the well to be operated in difficult conditions, for example, in conditions of high gas content or liquid temperature, as well as the presence of mechanical impurities (sand), paraffin deposits and/or salts.

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

Thus, in experiments and in wells, an electromechanical converter with two waveguides-oscillation concentrators is more efficient and, all other things being equal, releases 30-50% more gas per unit of time than an electromechanical converter with one waveguide-concentrator. In particular, full-scale laboratory experiments with video recording of the process of gas release from oil with a given viscosity showed that approximately with a periodicity of 1 sec, one cluster of bubbles in the form of foam broke away from one active surface of one waveguide-oscillation concentrator, and in the presence of two waveguides-oscillation concentrators, two clusters of homogeneous foam were formed simultaneously with a periodicity of 0.5 sec, i.e. the intensity of gas bubble release accelerated approximately 2 times.

Claims (60)

1. An electromechanical transducer for acting on a gas-containing liquid, characterized in that it includes 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 from a high-frequency electrical oscillation generator, wherein at least one waveguide-concentrator of oscillations is fixed on each of the two opposite ends of the core, each oscillation concentrator waveguide contains at least one active surface, designed with the possibility of interaction with a gas-containing liquid and arranged so that on two opposite sides of the core there is at least one surface, designed with the possibility of interaction with a gas-containing liquid and belonging to a separate oscillation concentrator waveguide, and on the side surface of at least one of the oscillation concentrator waveguides fixed to the core there is at least one protruding means, located in the zone of the corresponding oscillation concentrator waveguide, having a zero oscillation amplitude, wherein at least one protruding means is designed with the ability to set the position of the oscillation concentrator waveguides, the core and the winding placed on it relative to the external suspension. 2. The converter according to item 1, characterized in that the core is formed using a magnetostrictive or piezoceramic material. 3. The converter according to item 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 item 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 item 1, characterized in that the waveguide-oscillation concentrator has at least one closed or open cavity. 6. The converter according to item 1, characterized in that the waveguide-oscillation concentrator has a through hole. 7. The converter according to item 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 protrusion is equipped with a damper. 9. The converter according to the previous paragraph, characterized in that the damper is an elastomeric element fixed to the waveguide-concentrator of oscillations. 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 or for accommodating at least one fastening means or for accommodating at least one means that ensures the supply of 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 item 11, characterized in that the container is designed with the possibility of interaction with an external suspension. 13. The converter according to item 11, characterized in that the container has at least one through hole or slot for the passage of gas-containing liquid. 14. The converter according to item 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 item 14, characterized in that the container contains cooling agents. 16. The converter according to item 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 item 16, characterized in that the container is equipped with an additional capacity for cooling liquid. 18. The converter according to item 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, located on the outer and/or inner wall 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 container wall is provided with at least one opening for accommodating a means for supplying electrical energy to the core winding. 22. The converter according to item 11, characterized in that the container is detachable. 23. The converter according to item 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 item 11, 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 item 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 annular space, or a load-bearing cable. 28. Well equipment for influencing a gas-containing liquid, characterized in that it includes a column of pump and compressor pipes, at least one high-frequency oscillation generator and at least one electromechanical converter 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-concentrator of oscillations is fixed on each of the two opposite ends of the core, each oscillation concentrator waveguide contains at least one active surface, designed with the possibility of interaction with a gas-containing liquid and arranged so that on two opposite sides of the core there is at least one surface, designed with the possibility of interaction with a gas-containing liquid and belonging to a separate oscillation concentrator waveguide, and on the side surface of at least one of the oscillation concentrator waveguides fixed to the core there is at least one protruding means, located in the zone of the corresponding oscillation concentrator waveguide, having a zero oscillation amplitude, wherein at least one protruding means is designed with the ability to set the position of the oscillation concentrator waveguides, the core and the winding placed on it relative to the tubing string. 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 pump and compressor pipes. 32. Well equipment according to any of paragraphs 28-30, characterized in that at least one electromechanical converter is located outside the pump and compressor pipes. 33. Well equipment according to any of paragraphs 28-30, characterized in that it includes at least one packer installed on a column of tubing. 34. Well equipment according to item 33, characterized in that at least one electromechanical converter is located in the space above and/or below the packer. 35. Well equipment according to item 28, characterized in that the pump and compressor pipes are 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 converter 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 column 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 item 38, characterized in that at least one electromechanical converter is located inside and/or outside the annular space between the columns of pump and compressor pipes. 40. Well equipment according to item 36, characterized in that at least one electromechanical converter 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 ensures 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 ensures 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 item 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 column of pump-compressor pipes, at least one high-frequency oscillation generator and at least one electromechanical converter 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 from the 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, designed with the possibility of interaction with a gas-containing liquid and arranged so that on two opposite sides of the core there is at least one surface, designed with the possibility of interaction with a gas-containing liquid and belonging to a separate waveguide-oscillation concentrator, when placing at least one electromechanical transducer in a well, the position of the oscillation concentrator waveguides, 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 oscillation concentrator waveguides secured to the core and is located in the zone of the corresponding oscillation concentrator waveguide 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 to form a gas-liquid mixture by acting on the gas-containing liquid with at least one active surface of each waveguide-oscillation concentrator and raising the gas-liquid mixture to the surface due to the lifting energy of the released gas and the pressure at the well bottom. 45. A method for producing a 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 a 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 a 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. A method for extracting a 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 claim 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 electrical energy to the core winding.