Vortex type multi-elastic-sheet vibration pulse shaft wax-melting and scale-preventing equipment and using method thereof
The fluid is subjected to three acceleration and acoustic vibration treatments through the vortex multi-shrap vibration vibration equipment, which solves the problem of low recovery rate of wax-containing oil wells, and achieves an increase in fluid velocity and a significant reduction in viscosity and wax content.
Patent Information
- Application Number
- CN202411887003.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-03-25
AI Technical Summary
Wax-containing oil wells are prone to wax formation, resulting in wax jamming, resulting in a decrease in recovery rate. The existing wax-proof technology has problems such as fast magnetic field demagnetization, sound wave cyclone fracture jam pump, difficult to control wax cycle, and short wax-proof action distance.
The vortex multi-shray vibration pulse wellbore dewax and scale prevention equipment is used to accelerate the first-stage turbine, accelerate the vibration of the second-stage multi-shray, accelerate the fluid three times by the third-stage shrapnel and nozzle jet, and reduce the viscosity and wax content through sound wave vibration.
It significantly improves the fluid velocity, reduces the viscosity and wax content of crude oil, improves the recovery rate of oil and gas wells, and solves various problems in traditional wax prevention technology.
Smart Images
Figure CN119686691A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of oil and gas well engineering, and in particular to an eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment and a use method thereof. Background Art
[0002] In the oil industry, improving the recovery rate of oil and gas wells is currently a top priority research topic. Waxy oil wells are characterized by deep wells and low liquid volume. Low liquid volume leads to low liquid flow rate and long lifting section. The temperature loss is as high as 47.6°C. Crude oil is prone to waxing and wax sticking, which has become a difficulty in the management of waxy wells. Heavy oil has the characteristics of high viscosity, poor fluidity, and difficulty in lifting. The viscosity of oil products ranges from 50mPa.s to more than 50000mPa.s, which causes problems such as slow lowering of the bare rod, increased load on the pumping unit, reduced production, and increased energy consumption costs. Ultimately, excessive crude oil viscosity and high wax content will lead to a significant reduction in the recovery rate of oil and gas wells.
[0003] For this reason, the equipment used in high-wax wells in the early days included strong magnetic wax preventers, sonic wax preventers, solid wax preventers, eddy current wax preventers and other wax prevention processes, but these processes have problems such as fast magnetic field demagnetization, sonic cyclone sheet fracture and pump jam, difficult to control wax prevention cycle, short wax prevention action distance, and wax plugging and wax jam in oil wells. These problems need to be further improved and improved. Although the thermal wax removal technology introduced later has good effects, it cannot be promoted and applied on a large scale due to the limitations of gas source conditions. However, hot washing wax removal has large leakage and poor effect. Neither of these two methods can achieve a good practical effect. In recent years, studies have found that when using sonic technology to remove wax and reduce viscosity, when the sonic wave frequency is 20Hz to 20KHz, the oscillation frequency is low, the energy is low, the penetration is low and the direction is not fixed, and effective sound field energy cannot be formed, and cavitation effect cannot be produced. The effect of wax removal and viscosity reduction is not significant enough. Therefore, a vortex-type multi-shrapnel vibration pulse wellbore wax removal and scale prevention equipment is proposed to improve the above problems. Summary of the invention
[0004] The purpose of the present application is to provide a vortex-type multi-spring vibration pulse wellbore wax removal and scale prevention equipment and a method of using the same to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above purpose, the present application provides the following technical solution: eddy current type multi-shrapnel vibration pulse wellbore wax removal and anti-scaling equipment, including:
[0006] A first joint, an inner side of which is mounted an eddy current mechanism, the eddy current mechanism comprising a first turbine and a second turbine sequentially arranged along a length direction of the first joint;
[0007] A second joint, wherein a spring sheet group is installed on the inner side of the second joint, and the spring sheet group includes a first spring sheet and a second spring sheet which are sequentially arranged along the length direction of the second joint;
[0008] A third joint, a third spring sheet and a nozzle are sequentially mounted on the inner side of the third joint along the length direction thereof;
[0009] The first joint, the second joint and the third joint are connected in sequence along the flow direction of the fluid, and the nozzle is located on a side of the third elastic sheet away from the second joint.
[0010] The first spring piece (21), the second spring piece (22) and the third spring piece (31) are all made of anti-fouling and anti-wax alloy material.
[0011] As a further supplement to the present scheme, the channels of the turbine blades of the first turbine and the second turbine are curved and gradually narrow along the flow direction of the fluid; when the fluid enters the gradually narrowing part of the blade channel, the cross-sectional area of the channel decreases and the fluid flow rate increases, and when the flow rate increases, the pressure decreases, thereby causing a conversion between the pressure energy and kinetic energy of the fluid, changing the original flow state of the fluid and achieving the first acceleration.
[0012] As a further supplement to the present solution, the internal channel of the nozzle gradually narrows along the flow direction of the fluid; when the flow rate remains unchanged, the cross-sectional area at the nozzle decreases, then the flow velocity of the fluid will increase, and the pressure energy of the fluid is partially converted into kinetic energy when the fluid passes through the nozzle, the flow state of the fluid changes, and the third spring is used to achieve the third acceleration of the fluid.
[0013] As a further supplement to this solution, the first spring clip, the second spring clip and the third spring clip are all made of anti-scale and anti-wax alloy materials, which can not only play a fixing and supporting role, but also shield the electromagnetic field, solving a series of problems that traditional physical anti-scale and anti-wax tools are difficult to adapt to changing well conditions and are susceptible to interference.
[0014] The method for using the eddy current type multi-shrapnel vibration pulse wellbore wax removal and scale prevention equipment comprises the following steps:
[0015] Step 1: Inside the first joint, the fluid is accelerated by the first turbine and the second turbine. In the turbine, when the fluid flows through the turbine blades, the flow rate and pressure of the fluid change, so that the pressure energy and kinetic energy of the fluid are converted, the original flow state of the fluid is changed, and the first acceleration is achieved;
[0016] Step 2: The fluid accelerated by the eddy current comes to the inside of the second joint, impacts and causes the first spring to vibrate. The first spring continuously vibrates to form a vibration sound wave, which drives the second spring to vibrate and continuously generate sound waves. The sound wave not only causes a significant change in the amplitude and speed of the relevant ions in the fluid, but also accelerates the relative movement between the smaller molecules and the inert macromolecular chains in the crude oil, breaks the macromolecular chains of paraffin hydrocarbon molecules, asphaltene, etc., breaks the macromolecular clusters, and plays a role in reducing viscosity and preventing wax. At the same time, the vibration of the first spring and the second spring will in turn further increase the fluid flow rate and change the fluid flow state, thereby playing a secondary acceleration role in the fluid.
[0017] Step three, the fluid accelerated by the spring arrives inside the third joint, and the fluid after two accelerations passes through the third spring and causes acoustic vibration, which has the same effect as the first spring and the second spring. After passing through the third spring, the fluid passes through the nozzle, and after passing through the third spring and the nozzle, three accelerations of the fluid are achieved. At the same time, the viscosity reduction rate and wax content are greatly reduced through acoustic vibration. After passing through the nozzle, the fluid enters the cavitation chamber. Under the action of cavitation, various dispersion media are evenly dispersed in the liquid phase, which increases the corresponding solubility and further enhances the vibration effect of the alloy material.
[0018] As a further supplement to this solution, both ends of the second joint are reducer interface 2, the ends of the first joint and the third joint connected to the second joint are correspondingly set as reducer interface 1, reducer interface 1 is adapted to reducer interface 2, and the first joint and the third joint are both threadedly connected to the second joint.
[0019] As a further supplement to this solution, the ends of the first joint and the third joint close to the second joint are both provided with external threads, the outer sides of both ends of the second joint are rotatably sleeved with connecting sleeves, and the inner side of the connecting sleeve is provided with internal threads that are compatible with the external threads.
[0020] As a further supplement to this solution, the ends of the first joint and the third joint close to the second joint are fixedly sleeved with protective sleeves, the protective sleeves protrude from the ends where the external threads are located, and the connecting sleeves protrude from the ends of the second joints.
[0021] As a further supplement to the present solution, a plurality of limiting grooves are equidistantly arranged on the circumferential outer wall of the connecting sleeve, a one-way limiting block which is slidingly penetrated through the circumferential side of the protective sleeve and is engaged with the limiting grooves, a top block is fixed at the end of the one-way limiting block away from the connecting sleeve, and a tension spring is fixed between the top block and the protective sleeve.
[0022] As a further supplement to the present solution, an edge of the one-way limit block close to the side where the connecting sleeve is screwed in is set as inclined surface 1.
[0023] As a further supplement to the present solution, a disassembly ring is sleeved on the outer thread of the protective sleeve, and a bottom edge of a side of the top block close to the disassembly ring is arranged as a second inclined surface.
[0024] In summary, the technical effects and advantages of the present invention are as follows:
[0025] 1. In the present invention, the first-stage turbine acceleration, the second-stage multi-shrapnel vibration acceleration, the third-stage shrapnel vibration and the nozzle jet are used to accelerate the fluid three times, which greatly improves the speed of the fluid. At the same time, the viscosity reduction rate and wax content are greatly reduced through the sonic vibration.
[0026] 2. In the present invention, the device is installed at an appropriate position above the screen pipe under the oil pump, and does not require external power. It is a supplement and improvement to the traditional oil production process. The quantum anti-scaling and anti-wax alloy material is built into the design, which can not only play a fixing and supporting role, but also shield the electromagnetic field, solving a series of problems that traditional physical anti-scaling and anti-wax tools are difficult to adapt to changing well conditions and are easily disturbed.
[0027] 3. In the present invention, when ultrasonic waves act, the molecular clusters in the cavitation chamber oscillate at high frequency. As time goes by, the fluid generates cavitation bubbles and continues to expand. When the oscillation reaches a critical point, the cavitation bubbles burst under the action of ultrasonic sound pressure, generating a high-temperature and high-pressure cavitation effect, thereby achieving an anti-wax effect.
[0028] 4. In the present invention, by providing a limiting groove on the circumferential outer wall of the connecting sleeve, and a one-way limiting block sliding through the circumferential side of the protective sleeve and engaging with the limiting groove, in conjunction with the setting of the top block and the tension spring, after the joints are connected, the one-way limiting block can be inserted into one of the limiting grooves, thereby effectively preventing the joints from loosening due to internal vibration of the joints during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0030] Figure 1 It is a schematic diagram of a partial cutaway structure in this embodiment;
[0031] Figure 2 This is a schematic diagram of the connection structure of the first joint and part of the second joint in this embodiment;
[0032] Figure 3 Schematic diagram of the split structure of the first joint and part of the second joint in this embodiment;
[0033] Figure 4 is a schematic structural diagram of a portion of the second joints in this embodiment;
[0034] Figure 5 is a schematic diagram of the cutaway structure of the first joint in this embodiment;
[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the first joint and part of the second joint in the connected state in this embodiment.
[0036] Figure 7 It is a line graph showing the change in the ratio of the fluid velocity to the initial velocity after passing through the vortex mechanism at different initial velocities.
[0037] Figure 8 It is a line graph showing the change in the ratio of the fluid velocity to the initial velocity after passing through the nozzle at different initial velocities.
[0038] Fig. 9 It is a line graph showing the change in the ratio of fluid velocity to initial velocity at different initial velocities after multiple spring vibrations.
[0039] In the figure: 1. first joint; 101. reducer interface 1; 102. external thread; 11. first turbine; 12. second turbine; 13. protective sleeve; 14. top block; 1401. inclined plane 2; 15. one-way limit block; 1501. inclined plane 1; 16. tension spring; 17. disassembly ring; 2. second joint; 201. reducer interface 2; 21. first spring clip; 22. second spring clip; 23. connecting sleeve; 2301. internal thread; 2302. limiting groove; 3. third joint; 31. third spring clip; 32. nozzle. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0041] Example: Reference Figure 1-6 The eddy current type multi-spring vibration pulse wellbore wax removal and scale prevention equipment shown includes a first joint 1, a second joint 2 and a third joint 3.
[0042] Among them, a vortex mechanism is installed on the inner side of the first joint 1, and the vortex mechanism includes a first turbine 11 and a second turbine 12 arranged in sequence along the length direction of the first joint 1. The interiors of the first turbine 11 and the second turbine 12 are both spiral toothed guide grooves, and the channels of the turbine blades of the first turbine 11 and the second turbine 12 are both curved and gradually narrow along the flow direction of the fluid.
[0043] Inside the first joint 1, the fluid is accelerated by the first turbine 11 and the second turbine 12. In the turbine, when the fluid flows through the turbine blades, the shape of the blades is designed to change the flow rate, pressure, etc. of the fluid, and the passage of the turbine blades gradually narrows or bends. When the fluid enters the gradually narrowing part of the blade passage, according to the continuity equation A1v1=A2v2 (A represents the cross-sectional area of the fluid, and v represents the flow rate), the cross-sectional area decreases and the fluid flow rate increases. According to the Bernoulli equation p+ρgh+1 / 2mv 2 = constant (where p is the pressure at a point in the fluid, v is the velocity of the fluid at that point, ρ is the fluid density, h is the height of the point, and g is the acceleration due to gravity). According to Bernoulli's principle, when the flow velocity increases, the pressure decreases. This causes a conversion between the pressure energy and kinetic energy of the fluid, changing the original flow state of the fluid and achieving the first acceleration.
[0044] A spring sheet group is installed on the inner side of the second joint 2 , and the spring sheet group includes a first spring sheet 21 and a second spring sheet 22 which are sequentially arranged along the length direction of the second joint 2 .
[0045] After the fluid is accelerated by the vortex, it enters the cavity equipped with the shrapnel group, impacts the shrapnel and causes the first shrapnel 21 to vibrate. The shrapnel continues to vibrate to form a vibration sound wave. The first shrapnel 21 will drive the second shrapnel 22 to vibrate and continue to generate sound waves. The sound waves will not only cause significant changes in the amplitude and speed of related ions in the fluid, but also accelerate the relative movement between smaller molecules and inert macromolecular chains in crude oil, break the macromolecular chains of paraffin hydrocarbon molecules, asphaltene, etc., break the macromolecular clusters, and play a role in reducing viscosity and preventing wax. At the same time, the vibration of the shrapnel will in turn further increase the fluid flow rate and change the fluid flow state, thereby achieving the purpose of secondary acceleration of the fluid. According to actual requirements, the weight, size and relative position of multiple shrapnel can be changed to fully achieve the effect of secondary acceleration of the fluid.
[0046] The inner side of the third joint 3 is provided with a third elastic piece 31 and a nozzle 32 in sequence along its length direction, and the inner channel of the nozzle 32 gradually narrows along the flow direction of the fluid.
[0047] The fluid is accelerated by the spring group and enters the third joint 3. After being accelerated twice, the fluid passes through the third spring 31 and causes acoustic vibration, which has the same effect as the previous two springs. After passing through the third spring 31, the fluid passes through the nozzle 32. According to the Bernoulli equation and the continuity equation, when the fluid passes through the nozzle 32, since the shape of the nozzle 32 is gradually narrowed, when the flow rate remains unchanged, that is, the volume of fluid flowing through per unit time is the same, the cross-sectional area at the nozzle 32 decreases, then the flow rate of the fluid will increase. From the perspective of energy conservation, when the fluid passes through the nozzle 32, the pressure energy of the fluid is partially converted into kinetic energy, and the flow state of the fluid changes. After passing through the third spring 31 and the nozzle 32, the fluid is accelerated three times, which greatly improves the speed of the fluid. At the same time, the viscosity reduction rate and wax content are greatly reduced through acoustic vibration.
[0048] The first spring clip 21, the second spring clip 22 and the third spring clip 31 are all made of anti-scale and anti-wax alloy materials, which can not only play a fixing and supporting role, but also shield the electromagnetic field, solving a series of problems that traditional physical anti-scale and anti-wax tools are difficult to adapt to changing well conditions and are easily disturbed.
[0049] Regarding the connection between the first joint 1, the second joint 2 and the third joint 3, the first joint 1, the second joint 2 and the third joint 3 are connected in sequence along the flow direction of the fluid, and the nozzle 32 is located on the side of the third spring piece 31 away from the second joint 2. Specifically, both ends of the second joint 2 are reducer interface 201, and the ends of the first joint 1 and the third joint 3 connected to the second joint 2 are correspondingly set to reducer interface 1 101, and the reducer interface 1 101 is adapted to the reducer interface 2 201, and the first joint 1 and the third joint 3 are both threadedly connected to the second joint 2.
[0050] The first reducing interface 101 and the second reducing interface 201 are closely arranged to achieve a better sealing effect.
[0051] Regarding the above-mentioned first joint 1 and third joint 3 being threadedly connected with the second joint 2, specifically, the ends of the first joint 1 and the third joint 3 close to the second joint 2 are provided with external threads 102, and the outer sides of both ends of the second joint 2 are rotatably sleeved with connecting sleeves 23, and the inner side of the connecting sleeve 23 is provided with internal threads 2301 compatible with the external threads 102; during the connection operation, it is only necessary to manually rotate the connecting sleeve 23 to realize the threaded connection between the first joint 1 and the third joint 3 and the second joint 2. Compared with the direct threaded connection between the first joint 1 and the third joint 3 and the second joint 2, the additional setting of the connecting sleeve 23 makes it more convenient to disassemble and assemble the joints.
[0052] Taking into account that the setting of the reducer interface 101 and the reducer interface 201 causes the joint end to be relatively weak, the ends of the first joint 1 and the third joint 3 close to the second joint 2 are fixedly sleeved with a protective sleeve 13, the protective sleeve 13 protrudes from the end where the external thread 102 is located, and the connecting sleeve 23 protrudes from the end of the second joint 2. On the one hand, the protective sleeve 13 and the connecting sleeve 23 can respectively compensate for the strength loss caused by the setting of the reducer interface 101 and the reducer interface 201, better protect the joint end, and effectively prevent the end from being deformed by force. On the other hand, the set protective sleeve 13 can also protect the external thread 102.
[0053] In order to prevent the joints from loosening due to internal vibration during use, a plurality of limiting grooves 2302 are equidistantly arranged on the circumferential outer wall of the connecting sleeve 23, and a one-way limiting block 15 which is engaged with the limiting groove 2302 is slidably penetrated through the circumferential side of the protective sleeve 13, and a top block 14 is fixed to the end of the one-way limiting block 15 away from the connecting sleeve 23, and a tension spring 16 is fixed between the top block 14 and the protective sleeve 13. After the joints are connected, the one-way limiting block 15 can be inserted into one of the limiting grooves 2302 to prevent the connecting sleeve 23 and the joint from loosening.
[0054] Among them, the edge of the one-way limit block 15 close to the connecting sleeve 23 is screwed into a bevel 1501. During the screw connection between the connecting sleeve 23 and the joint, since the connecting sleeve 23 squeezes the bevel 1501 of the one-way limit block 15, the one-way limit block 15 will not hinder the screwing of the connecting sleeve 23; however, the connecting sleeve 23 cannot reversely squeeze the one-way limit block 15 to screw out of the joint, thereby preventing it from loosening.
[0055] In addition, in order to facilitate the disassembly of the joint, the outer thread of the protective sleeve 13 is connected with a disassembly ring 17, and the bottom edge of the top block 14 close to the disassembly ring 17 is set as a slope 2 1401. During disassembly, the disassembly ring 17 is manually rotated so that the disassembly ring 17 squeezes the slope 2 1401 of the top block 14, so that the top block 14 and the one-way limit block 15 are separated from the limit groove 2302. At this time, the connecting sleeve 23 can be smoothly rotated in the opposite direction to complete the disassembly operation between the joints.
[0056] Working principle of the present invention: Assembly of the first joint 1, the second joint 2 and the third joint 3: Assemble the first joint 1 and the third joint 3 with the two ends of the second joint 2 respectively, and use the reducer interface 101 and the reducer interface 201 to fit the two joints together, and then rotate the connecting sleeve 23 to realize the threaded connection between the first joint 1 and the third joint 3 and the second joint 2. After the joints are connected, the one-way limit block 15 is in a state of being inserted into one of the limit grooves 2302, so as to prevent the connection sleeve 23 and the joint from loosening;
[0057] Install the device at an appropriate position above the lower screen of the oil well pump. During use:
[0058] The first stage: Inside the first joint 1, the fluid is accelerated by the first turbine 11 and the second turbine 12. In the turbine, when the fluid flows through the turbine blades, the shape of the blades is designed to change the flow rate, pressure, etc. of the fluid, and the passage of the turbine blades gradually narrows or bends. When the fluid enters the gradually narrowing part of the blade passage, according to the continuity equation A1v1=A2v2 (A represents the cross-sectional area of the fluid, and v represents the flow rate), the cross-sectional area decreases and the fluid flow rate increases. According to the Bernoulli equation p+ρgh+1 / 2mv 2 = constant (where p is the pressure at a point in the fluid, v is the velocity of the fluid at that point, ρ is the fluid density, h is the height of the point, and g is the acceleration due to gravity). According to Bernoulli's principle, when the flow velocity increases, the pressure decreases, which causes a conversion between the pressure energy and kinetic energy of the fluid, changing the original flow state of the fluid and achieving the first acceleration;
[0059] The second stage: the fluid enters the cavity with the shrapnel group, impacts the shrapnel and causes the first shrapnel 21 to vibrate. The shrapnel continues to vibrate to form a vibration sound wave. The first shrapnel 21 will drive the second shrapnel 22 to vibrate and continue to generate sound waves. The sound waves will not only cause significant changes in the amplitude and speed of related ions in the fluid, but also accelerate the relative movement between smaller molecules and inert macromolecular chains in crude oil, break the macromolecular chains of paraffin hydrocarbon molecules, asphaltene, etc., and break up macromolecular clusters, which can reduce viscosity and prevent wax. At the same time, the vibration of the shrapnel will in turn further increase the flow rate of the fluid and change the flow state of the fluid, thereby achieving the purpose of secondary acceleration of the fluid. According to actual requirements, the weight, size and relative position of multiple shrapnel can be changed to fully achieve the effect of secondary acceleration of the fluid;
[0060] The third stage: the fluid comes to the third joint 3. After being accelerated twice, the fluid passes through the third spring piece 31 and causes acoustic vibration, which has the same effect as the previous two spring pieces. After passing through the third spring piece 31, the fluid passes through the nozzle 32. According to the Bernoulli equation and the continuity equation, when the fluid passes through the nozzle 32, since the shape of the nozzle 32 is gradually narrowed, when the flow rate remains unchanged, that is, the volume of fluid flowing through per unit time is the same, the cross-sectional area at the nozzle 32 decreases, then the flow rate of the fluid will increase. From the perspective of energy conservation, when the fluid passes through the nozzle 32, the pressure energy of the fluid is partially converted into kinetic energy, and the flow state of the fluid changes. After passing through the third spring piece 31 and the nozzle 32, three accelerations of the fluid are achieved, which greatly improves the speed of the fluid. At the same time, the viscosity reduction rate and the wax content are greatly reduced through acoustic vibration; after passing through the nozzle 32, the fluid enters the cavitation chamber (not shown in the figure). Under the action of cavitation, various dispersion media can be evenly dispersed in the liquid phase, which can improve the corresponding solubility, further strengthen the vibration effect of the alloy material, and achieve the effect of anti-scaling and anti-wax, viscosity reduction and increased production.
[0061] In this solution, the velocity of the fluid after passing through the first joint 1 of the device is calculated through simulation experiments, and the velocity is compared with that of the same amount of fluid not passing through the first joint 1 of the device under the same conditions, such as Figure 7 It is shown that the fluid has a significantly higher speed after passing through the first joint 1 than the fluid not passing through the first joint 1 of the device, that is, the fluid has achieved a first acceleration through the first joint 1; after an equal amount of the same fluid is accelerated through the first joint 1 of the device at the same time, the speed of the fluid after passing through the second joint 2 and not passing through the second joint 2 under the same conditions is tested respectively, and the comparison shows that the fluid is accelerated twice in the second joint 2, and the speed is significantly improved compared with the first acceleration, and the viscosity and wax content of the fluid are also significantly reduced; after an equal amount of the same fluid is accelerated through the first joint 1 and the second joint 2 of the device at the same time, as shown Figure 8 It is shown that by testing the speed of the fluid after passing through the third joint 3 and not passing through the third joint 3 under the same conditions, and comparing them, it can be proved that, as Fig. 9 It is shown that the fluid is accelerated three times in the third joint 3, and the speed is greatly improved compared with the second acceleration, and the viscosity and wax content of the fluid are also significantly reduced.
[0062] The equipment in this solution accelerates the fluid passing through each joint, and reduces viscosity and prevents wax treatment of the fluid through ultrasonic vibration caused by multiple springs, overcoming the problems of short maintenance time of anti-wax and viscosity reduction treatment effect, frequent operation and environmental pollution in the prior art. Moreover, the equipment does not require external power, which is a supplement and improvement to the traditional oil production process. The use of this equipment can greatly increase the flow rate of formation crude oil, thereby improving the oil recovery rate.
[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. Eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment, characterized by: include: A first joint (1), wherein a vortex mechanism is installed on the inner side of the first joint (1), and the vortex mechanism comprises a first turbine (11) and a second turbine (12) which are sequentially arranged along the length direction of the first joint (1); A second joint (2), wherein a spring sheet group is installed on the inner side of the second joint (2), and the spring sheet group comprises a first spring sheet (21) and a second spring sheet (22) which are sequentially arranged along the length direction of the second joint (2); A third joint (3), wherein a third elastic sheet (31) and a nozzle (32) are sequentially mounted on the inner side of the third joint (3) along its length direction; The first joint (1), the second joint (2) and the third joint (3) are connected in sequence along the flow direction of the fluid, and the nozzle (32) is located on a side of the third elastic sheet (31) away from the second joint (2).
2. The eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment according to claim 1 is characterized by: The passages of the turbine blades of the first turbine (11) and the second turbine (12) are both curved and gradually narrow along the flow direction of the fluid.
3. The eddy current type multi-spring vibration pulse wellbore wax removal and scale prevention equipment according to claim 2 is characterized by: The internal passage of the nozzle (32) gradually narrows along the flow direction of the fluid.
4. The eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment according to claim 1 is characterized by: The first spring piece (21), the second spring piece (22) and the third spring piece (31) are all made of anti-fouling and anti-wax alloy material.
5. The method for using the eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment as claimed in claim 3 is characterized by: The following steps are involved: Step 1: Inside the first joint (1), the fluid is accelerated by the first turbine (11) and the second turbine (12). In the turbine, when the fluid flows through the turbine blades, the flow rate and pressure of the fluid change, so that the pressure energy and kinetic energy of the fluid are converted, the original flow state of the fluid is changed, and the first acceleration is achieved; Step 2: The fluid accelerated by the eddy current enters the interior of the second joint (2), impacts and causes the first spring piece (21) to vibrate. The first spring piece (21) continues to vibrate to form a vibration sound wave, which drives the second spring piece (22) to vibrate and continuously generate sound waves. The sound waves not only cause the amplitude and speed of related ions in the fluid to change significantly, but also accelerate the relative movement between smaller molecules and inert macromolecular chains in crude oil, break macromolecular chains such as paraffin hydrocarbon molecules and asphaltene, and break macromolecular clusters, which can play a role in reducing viscosity and preventing wax. At the same time, the vibration of the first spring piece (21) and the second spring piece (22) will in turn further increase the fluid flow rate and change the fluid flow state, thereby playing a role in secondary acceleration of the fluid. Step 3: The fluid accelerated by the spring sheet enters the third joint (3). After being accelerated twice, the fluid passes through the third spring sheet (31) and causes acoustic vibration, which has the same effect as the first spring sheet (21) and the second spring sheet (22). After passing through the third spring sheet (31), the fluid passes through the nozzle (32). After passing through the third spring sheet (31) and the nozzle (32), the fluid is accelerated three times. At the same time, the viscosity reduction rate and the wax content are greatly reduced through acoustic vibration. After passing through the nozzle (32), the fluid enters the cavitation chamber. Under the action of cavitation, various dispersion media are evenly dispersed in the liquid phase, thereby increasing the corresponding solubility and further enhancing the vibration effect of the alloy material.
6. The eddy current type multi-spring vibration pulse wellbore wax removal and scale prevention equipment according to claim 3 is characterized by: Both ends of the second joint (2) are reducer interfaces 2 (201); the ends of the first joint (1) and the third joint (3) connected to the second joint (2) are correspondingly arranged as reducer interfaces 1 (101); the reducer interface 1 (101) is adapted to the reducer interface 2 (201); and the first joint (1) and the third joint (3) are both threadedly connected to the second joint (2).
7. The eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment according to claim 6 is characterized by: The ends of the first joint (1) and the third joint (3) close to the second joint (2) are both provided with external threads (102); the outer sides of both ends of the second joint (2) are both rotatably sleeved with connecting sleeves (23); the inner sides of the connecting sleeves (23) are provided with internal threads (2301) adapted to the external threads (102).
8. The eddy current type multi-spring vibration pulse wellbore wax removal and scale prevention equipment according to claim 7 is characterized by: The ends of the first joint (1) and the third joint (3) close to the second joint (2) are both fixedly sleeved with a protective sleeve (13), the protective sleeve (13) protruding from the end where the external thread (102) is located, and the connecting sleeve (23) protruding from the end of the second joint (2).
9. The eddy current type multi-spring vibration pulse wellbore wax removal and anti-scaling equipment according to claim 8 is characterized by: A plurality of limiting grooves (2302) are equidistantly arranged on the circumferential outer wall of the connecting sleeve (23); a one-way limiting block (15) is slidably penetrated through the circumferential side of the protective sleeve (13) and is engaged with the limiting groove (2302); a top block (14) is fixed to the end of the one-way limiting block (15) away from the connecting sleeve (23); a tension spring (16) is fixed between the top block (14) and the protective sleeve (13); and an edge of the one-way limiting block (15) on the side where the connecting sleeve (23) is screwed in, close to the connecting sleeve (23), is arranged as an inclined surface (1501).
10. The eddy current type multi-spring vibration pulse wellbore wax removal and scale prevention equipment according to claim 9, characterized in that: The outer side of the protective sleeve (13) is threadedly sleeved with a disassembly ring (17), and the bottom edge of one side of the top block (14) close to the disassembly ring (17) is arranged as a second inclined surface (1401).