Shaft bottom high-pressure microbubble generation device and shaft bottom high-pressure microbubble generation method

Abstract

The invention provides a downhole high-pressure microbubble generating device and method, and the downhole high-pressure microbubble generating device comprises a fixing mechanism which is used for being fixed in a well body, and the fixing mechanism comprises an annular fixing part; at least one part of the moving mechanism is connected with the annular fixing piece, and at least the other part of the moving mechanism can move in the surrounding direction of the annular fixing piece; at least one part of the stirring mechanism is connected with the moving mechanism so that the stirring mechanism can move in the surrounding direction of the annular fixing piece, the stirring mechanism is provided with at least one stirring rod extending towards the well bottom of the well body, and the stirring rod is used for stirring high-pressure gas-containing water in the well body to generate microbubbles; the stirring rod can rotate by taking the central axis of the stirring rod as an axis; the control mechanism is used for controlling the movement of the moving mechanism and the stirring mechanism. The problem that in the prior art, a microbubble generating device is poor in use performance is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bottom-hole microbubble displacement, and more specifically, to a bottom-hole high-pressure microbubble generating device and a bottom-hole high-pressure microbubble generating method. Background Art

[0002] Microbubbles are essentially bubbles contained in water, with different sizes. The diameter of ordinary water molecules is about 200 microns. According to the ISO international standard, only bubbles with a diameter less than 100 microns can be called microbubbles. If the bubble diameter reaches 1 micron or less, it can be called an ultra-microbubble. Physically, microbubbles are mainly formed by changing the physical properties of water. Under a specific pressure, a certain gas (such as air) is dissolved in water to form a gas-water mixed solution, and then the pressure is released by expansion, causing the gas in the water to suddenly aggregate to form microbubble water. Individually, microbubbles are insignificant, but when a large number of microbubbles gather together, they will have certain capabilities. In the existing production of microbubbles, they are usually formed by using a filter plate with a certain mesh size. The mesh size on the filter plate is fixed and cannot be changed, and it is not convenient to replace, so it is not easy to adjust the foam size of the microbubbles, with low flexibility and poor performance. Additionally, there is a device that uses a specially made tapered channel part with a smaller diameter and a mixing chamber, enabling air to be inhaled into the mixing chamber through the suction port by means of the negative pressure and mixed with the water flow to form bubble water. The formed bubble water passes through the cutting and mixing of a microbubble foamer to form microbubble water. However, such a device is too complex, and the microbubbles are not generated at the bottom of the well. There is a relatively high risk of the microbubbles bursting or aggregating during the process of being transported into the formation, so what reaches the formation is not microbubbles, and the purpose of microbubble displacement cannot be achieved.

[0003] That is to say, there is a problem of poor performance in the existing microbubble generating devices. Summary of the Invention

[0004] The main objective of the present invention is to provide a bottom-hole high-pressure microbubble generating device and a bottom-hole high-pressure microbubble generating method to solve the problem of poor performance in the existing microbubble generating devices.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a downhole high-pressure microbubble generating device, including: a fixing mechanism for fixing in the wellbore, the fixing mechanism includes an annular fixing member disposed around the inner wall of the wellbore; a moving mechanism, at least a part of the moving mechanism is connected to the annular fixing member, and at least another part of the moving mechanism can move along the circumferential direction of the annular fixing member; at least one stirring mechanism, at least a part of the stirring mechanism is connected to the moving mechanism so that the stirring mechanism can move along the circumferential direction of the annular fixing member, the stirring mechanism has at least one stirring rod extending towards the bottom of the wellbore, the stirring rod is used for stirring the high-pressure gas-containing water in the wellbore to generate microbubbles, and the stirring rod can rotate about the central axis of the stirring rod; a control mechanism for controlling the movement of the moving mechanism and the stirring mechanism.

[0006] Further, the moving mechanism includes: a track assembly, the track assembly includes an annular track disposed in contact with the inner wall of the annular fixing member; at least one moving component, at least a part of the moving component is slidably connected to the annular track; at least one power component, the power component is provided corresponding to the moving component one by one, at least a part of the power component is connected to the moving component, and at least another part of the power component is connected to the annular track, and the power component can drive the moving component to move.

[0007] Further, the power component includes: a first control part, at least a part of the first control part is fixedly connected to the moving component, the first control part has an output shaft, and the control mechanism can control the rotation speed of the output shaft; a connecting wheel sleeved on the output shaft, and the connecting wheel is meshed with the annular track to drive the moving component to move when the connecting wheel moves along the annular track.

[0008] Further, the annular track includes: a sliding part slidably connected to the moving component; a connecting part disposed closer to the annular fixing member relative to the sliding part, and the connecting wheel is meshed with the connecting part.

[0009] Further, the side of the connecting part facing the bottom of the well has a toothed rail, the connecting wheel meshes and moves on the toothed rail, and the first control part is fixed on the side of the moving component facing the bottom of the well.

[0010] Further, the connecting part is located in the middle of the sliding part, so that one side of the longitudinal section of the annular track is in a "T" shape, the moving component includes a slider, and the slider is provided with a sliding groove, and the slider is slidably sleeved outside the sliding part.

[0011] Further, the top and / or bottom of the sliding part is provided with a rolling groove, the rolling groove is an annular rolling groove, and the track assembly further includes a plurality of balls disposed in the annular rolling groove and in contact with the slider.

[0012] Further, the moving mechanism includes two moving components disposed opposite to each other.

[0013] Further, the stirring mechanism includes: a connecting component, which includes a connecting housing having an accommodation space. The connecting housing is connected to the moving mechanism so that the moving mechanism drives the stirring mechanism to move along the circumferential direction of the annular fixing member; a transmission component, which is arranged in the accommodation space. One end of the stirring rod is connected to the transmission component so that the transmission component drives the stirring rod to rotate.

[0014] Further, the transmission component includes: a second control part having a rotating shaft extending towards the bottom of the well, and the control mechanism can control the rotating speed of the rotating shaft; a first gear sleeved on the rotating shaft; a second gear meshed with the first gear; a connecting rod, one end of which is connected to the second gear so that the second gear drives the connecting rod to rotate; a worm, one end of which is connected to the other end of the connecting rod, and the worm and the connecting rod extend in a direction perpendicular to the stirring rod; at least one worm gear connected to the worm, the worm gears are arranged in one-to-one correspondence with the stirring rods, and one end of each worm gear is connected to a corresponding stirring rod so that the worm gears drive the stirring rods to rotate.

[0015] Further, the stirring mechanism further includes at least one stirring blade, the stirring blades are arranged in one-to-one correspondence with the stirring rods, and the stirring blades are arranged at one end of the stirring rods close to the bottom of the well.

[0016] Further, the stirring mechanism includes a plurality of stirring rods arranged at intervals.

[0017] According to another aspect of the present invention, a method for generating high-pressure microbubbles at the bottom of a well is provided. Using the above-mentioned high-pressure microbubble generating device at the bottom of a well, the method for generating high-pressure microbubbles at the bottom of a well includes: the control mechanism of the high-pressure microbubble generating device at the bottom of the well controls the output shafts of the first control parts of all power components of the moving mechanism of the high-pressure microbubble generating device at the bottom of the well to rotate synchronously, so as to drive all moving components of the moving mechanism to move at the same speed and in the same direction; the control mechanism controls the rotating shafts of the transmission components of all stirring mechanisms of the high-pressure microbubble generating device at the bottom of the well to rotate synchronously, so as to drive the stirring rods of all stirring mechanisms to rotate at the same speed and in the same direction; the stirring rods stir the high-pressure gas-containing water in the wellbore to generate high-pressure microbubbles; adjust the rotating speed of the output shaft and / or the rotating shaft to adjust the size of the high-pressure microbubbles.

[0018] Applying the technical solution of the present invention, the downhole high-pressure microbubble generating device includes a fixing mechanism, a moving mechanism, at least one stirring mechanism, and a control mechanism. The fixing mechanism is used to be fixed in the wellbore. The fixing mechanism includes an annular fixing member, and the annular fixing member is arranged around the inner wall of the wellbore for one week; at least a part of the moving mechanism is connected to the annular fixing member, and at least another part of the moving mechanism can move along the circumferential direction of the annular fixing member; at least a part of the stirring mechanism is connected to the moving mechanism so that the stirring mechanism can move along the circumferential direction of the annular fixing member. The stirring mechanism has at least one stirring rod extending towards the bottom of the wellbore. The stirring rod is used to stir the high-pressure gas-containing water in the wellbore to generate microbubbles, and the stirring rod can rotate around the central axis of the stirring rod; the control mechanism is used to control the movement of the moving mechanism and the stirring mechanism.

[0019] By arranging a fixing mechanism in the wellbore, the downhole high-pressure microbubble generating device can be fixed in the wellbore, and then microbubbles can be directly generated at the bottom of the well to displace the oil in the formation. By arranging an annular fixing member around the inner wall of the wellbore for one week, at least another part of the moving mechanism can move along the circumferential direction of the annular fixing member, and then drive the stirring rod on the stirring mechanism to move around the wellbore. At the same time, combined with the rotation of the stirring rod itself, the high-pressure gas-containing water in the wellbore is stirred in a moving and rotating manner, so as to generate microbubbles, and the stirring area and effect are improved. By controlling the movement of the moving mechanism and the stirring mechanism through the control mechanism, the rotation of the stirring rod around the wellbore and the rotation speed of itself can be controlled, so as to adjust the size of the generated microbubbles. And when the speed is changed, all the stirring rods can change the speed at the same time, quickly generating microbubbles of different sizes to meet the construction needs, and the size of the generated microbubbles is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 Shows a schematic diagram of the downhole high-pressure microbubble generating device of Embodiment 1 of the present invention from one angle;

[0022] Figure 2 Shows Figure 1 Another angle schematic diagram of the downhole high-pressure microbubble generating device in;

[0023] Figure 3 Shows Figure 1 Partial structural schematic diagram in;

[0024] Figure 4 Shows Figure 3 Enlarged schematic diagram of part A in;

[0025] Figure 5 shows Figure 1 a schematic diagram of the stirring mechanism in

[0026] Figure 6 shows a flowchart of the method for generating high-pressure microbubbles at the bottom of a well according to any optional embodiment of the present invention.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Fixing mechanism; 11. Annular fixing member; 12. Fixing block; 13. Fixing screw; 20. Moving mechanism; 21. Track assembly; 22. Moving assembly; 221. Slide block; 222. Slide groove; 23. Power assembly; 231. First control part; 232. Connecting wheel; 233. Installation box; 24. Annular track; 241. Sliding part; 242. Connecting part; 243. Rolling groove; 244. Ball; 25. Tooth rail; 30. Stirring mechanism; 31. Stirring rod; 32. Connecting assembly; 321. Connecting housing; 33. Transmission assembly; 331. Second control part; 332. First gear; 333. Second gear; 334. Connecting rod; 335. Worm; 336. Worm gear; 34. Stirring blade; 40. Control mechanism; 50. Well body; 60. Installation groove. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0031] In the present invention, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation words do not limit the present invention.

[0032] In order to solve the problem of poor performance of microbubble generation devices in the prior art, the present invention provides a bottom-hole high-pressure microbubble generation device and a bottom-hole high-pressure microbubble generation method.

[0033] As Figures 1 to 6As shown in the figure, the downhole high-pressure microbubble generating device includes a fixing mechanism 10, a moving mechanism 20, at least one stirring mechanism 30, and a control mechanism 40. The fixing mechanism 10 is used to be fixed in the well body 50. The fixing mechanism 10 includes an annular fixing member 11, and the annular fixing member 11 is arranged around the inner wall of the well body 50 for one week. At least a part of the moving mechanism 20 is connected to the annular fixing member 11, and at least another part of the moving mechanism 20 can move along the circumferential direction of the annular fixing member 11. At least a part of the stirring mechanism 30 is connected to the moving mechanism 20, so that the stirring mechanism 30 can move along the circumferential direction of the annular fixing member 11. The stirring mechanism 30 has at least one stirring rod 31 extending towards the bottom of the well body 50. The stirring rod 31 is used to stir the high-pressure gas-containing water in the well body 50 to generate microbubbles, and the stirring rod 31 can rotate around the central axis of the stirring rod 31. The control mechanism 40 is used to control the movements of the moving mechanism 20 and the stirring mechanism 30.

[0034] By arranging the fixing mechanism 10 in the well body 50, the downhole high-pressure microbubble generating device can be fixed in the well body 50, and then microbubbles can be directly generated at the bottom of the well to displace the oil in the formation. By arranging the annular fixing member 11 around the inner wall of the well body 50 for one week, at least another part of the moving mechanism 20 can move along the circumferential direction of the annular fixing member 11, and then drive the stirring rod 31 on the stirring mechanism 30 to move around the well body 50. At the same time, combined with the rotation of the stirring rod 31 itself, the high-pressure gas-containing water in the well body 50 is stirred in a moving and rotating manner, so as to generate microbubbles, and the stirring area and effect are improved. By controlling the movements of the moving mechanism 20 and the stirring mechanism 30 through the control mechanism 40, the rotation of the stirring rod 31 around the well body 50 and the rotation speed of itself can be controlled, so as to adjust the size of the generated microbubbles. And when the speed is changed, all the stirring rods 31 can change the speed at the same time, quickly generating microbubbles of different sizes to meet the construction requirements, and the sizes of the generated microbubbles are more uniform.

[0035] It should be noted that the movement of the stirring rod 31 around the well body 50 and the rotation of the stirring rod 31 itself can independently generate microbubbles, and in this application, the two stirring methods are carried out simultaneously, which improves the stirring area and effect and improves the generation efficiency of microbubbles.

[0036] Such as Figure 2As shown, the moving mechanism 20 includes an orbital assembly 21, at least one moving assembly 22, and at least one power assembly 23. The orbital assembly 21 includes an annular track 24 which is disposed in conformity with the inner wall of the annular fixing member 11; at least a part of the moving assembly 22 is slidably connected to the annular track 24; the power assemblies 23 are provided in one-to-one correspondence with the moving assemblies 22, at least a part of the power assemblies 23 is connected to the moving assemblies 22, and at least another part of the power assemblies 23 is connected to the annular track 24, and the power assemblies 23 can drive the moving assemblies 22 to move. By slidably disposing the moving assemblies 22 on the annular track 24, the moving assemblies 22 can move along the annular track 24. The power assemblies 23 connect the moving assemblies 22 and the annular track 24, and can drive the moving assemblies 22 to move by virtue of the relative movement between the power assemblies 23 and the annular track 24.

[0037] As Figure 3 shown, the power assembly 23 includes a first control part 231 and a connecting wheel 232. At least a part of the first control part 231 is fixedly connected to the moving assembly 22. The first control part 231 has an output shaft, and the control mechanism 40 can control the rotation speed of the output shaft; the connecting wheel 232 is sleeved on the output shaft, and the connecting wheel 232 is meshed with the annular track 24 so as to drive the moving assembly 22 to move when the connecting wheel 232 moves along the annular track 24. By controlling the rotation of the output shaft by the first control part 231 and then driving the connecting wheel 232 to rotate, the meshing action between the connecting wheel 232 and the annular track 24 can be utilized to drive the moving assembly 22 to move along the annular track 24.

[0038] As Figure 4 shown, the annular track 24 includes a sliding part 241 and a connecting part 242. The sliding part 241 is slidably connected to the moving assembly 22; the connecting part 242 is disposed closer to the annular fixing member 11 relative to the sliding part 241, and the connecting wheel 232 is meshed with the connecting part 242. By the connecting wheel 232 moving on the connecting part 242 and the moving assembly 22 moving on the sliding part 241, while ensuring that the connecting wheel 232 can drive the moving assembly 22 to move, it is ensured that the movement trajectories of the connecting wheel 232 and the moving assembly 22 on the annular track 24 are stable, avoiding the movement of the connecting wheel 232 and the moving assembly 22 from conflicting and ensuring stable operation.

[0039] As Figure 4As shown, the connecting part 242 is located in the middle of the sliding part 241, so that one side of the longitudinal section of the annular track 24 is in a "T" shape. The moving component 22 includes a slider 221, and the slider 221 is provided with a chute 222. The slider 221 is slidably sleeved outside the sliding part 241. Connecting the sliding part 241 and the connecting part 242 into a "T" shape on one side of the section can ensure the stable connection between the connecting part 242 and the annular fixing member 11, provide sufficient width for the movement of the connecting wheel 232 and the moving component 22, and at the same time ensure the stability of the slider 221 sleeved on the connecting part 242, which can play a limiting role in both the horizontal and vertical directions of the slider 221, avoid tilting and shaking, and ensure the smooth sliding of the slider 221.

[0040] As Figure 4 shown, a rolling groove 243 is provided at the top or bottom of the sliding part 241. The rolling groove 243 is an annular rolling groove. The track assembly 21 further includes a plurality of balls 244. The balls 244 are arranged in the annular rolling groove 243 and are in contact with the slider 221. By providing the rolling groove 243 along the sliding part 241 and arranging the balls 244 therein, the balls 244 are in rolling contact with both the slider 221 and the sliding part 241, reducing the friction between the slider 221 and the sliding part 241, thereby reducing the loss and prolonging the service life.

[0041] Of course, rolling grooves 243 can be provided at both the top and bottom of the sliding part 241 to improve the smoothness of the movement of the slider 221.

[0042] As Figure 3 shown, the stirring mechanism 30 includes a connecting component 32 and a transmission component 33. The connecting component 32 includes a connecting housing 321. The connecting housing 321 has an accommodating space. The connecting housing 321 is connected to the moving mechanism 20, so that the moving mechanism 20 drives the stirring mechanism 30 to move along the circumferential direction of the annular fixing member 11; the transmission component 33 is arranged in the accommodating space, and one end of the stirring rod 31 is connected to the transmission component 33, so that the transmission component 33 drives the stirring rod 31 to rotate. When the moving mechanism 20 is connected to the connecting housing 321 and drives the stirring mechanism 30 to move around the well body 50, the connecting housing 321 provides an accommodating space for the transmission component 33, so that the transmission component 33 drives the stirring rod 31 to rotate itself.

[0043] As Figure 5As shown in the figure, the transmission assembly 33 includes a second control part 331, a first gear 332, a second gear 333, a connecting rod 334, a worm 335 and at least one worm gear 336. The second control part 331 has a rotating shaft extending towards the bottom of the well, and the control mechanism 40 can control the rotating speed of the rotating shaft; the first gear 332 is sleeved on the rotating shaft; the second gear 333 is meshed and connected with the first gear 332; one end of the connecting rod 334 is connected with the second gear 333 so that the second gear 333 drives the connecting rod 334 to rotate; one end of the worm 335 is connected with the other end of the connecting rod 334, and the worm 335 and the connecting rod 334 extend in a direction perpendicular to the stirring rod 31; the worm gear 336 is connected to the worm 335, and the worm gears 336 are arranged in one-to-one correspondence with the stirring rods 31, and the worm gear 336 is connected to one end of the stirring rod 31 so that the worm gear 336 drives the stirring rod 31 to rotate. By using the rotation of the rotating shaft on the second control part 331 and transmitting the rotation to the first gear 332, the second gear 333, the connecting rod 334, the worm 335 and the worm gears 336 in sequence, the stirring rod 31 can be finally driven to rotate itself. Also, by arranging a plurality of worm gears 336 to connect a plurality of stirring rods 31, the stirring efficiency and the micro-bubble generation efficiency can be improved.

[0044] Optionally, the stirring mechanism 30 includes a plurality of stirring rods 31, and the plurality of stirring rods 31 are arranged at intervals.

[0045] As Figure 5 shown in the figure, the plane where the first gear 332 is located and the plane where the second gear 333 is located are perpendicular to each other, so as to convert the rotation of the rotating shaft arranged along the extending direction of the well body 50 into the rotation of the connecting rod 334 and the worm 335 parallel to the bottom of the well, and then utilize the rotation of the worm gear 336 on the worm 335 to drive the stirring rod 31 arranged along the extending direction of the well body 50 to stir the high-pressure gas-containing water.

[0046] As Figure 5 shown in the figure, the stirring mechanism 30 further includes at least one stirring blade 34, the stirring blades 34 are arranged in one-to-one correspondence with the stirring rods 31, and the stirring blades 34 are arranged at one end of the stirring rod 31 close to the bottom of the well. By arranging the stirring blades 34, the stirring effect on the high-pressure gas-containing water can be further improved, and the micro-bubble generation efficiency can be improved.

[0047] As Figure 6As shown in the figure, the present invention also provides a method for generating high-pressure microbubbles at the bottom of a well. Using the above-mentioned high-pressure microbubble generating device at the bottom of a well, the method for generating high-pressure microbubbles at the bottom of a well includes: Step S10: The control mechanism 40 of the high-pressure microbubble generating device at the bottom of the well controls the output shafts of the first control parts 231 of all the power components 23 of the moving mechanism 20 of the high-pressure microbubble generating device at the bottom of the well to rotate synchronously, so as to drive all the moving components 22 of the moving mechanism 20 to move at the same speed and in the same direction; Step S20: The control mechanism 40 controls the rotating shafts of the second control parts 331 of the transmission components 33 of all the stirring mechanisms 30 of the high-pressure microbubble generating device at the bottom of the well to rotate synchronously, so as to drive the stirring rods 31 of all the stirring mechanisms 30 to rotate at the same speed and in the same direction; Step S30: The stirring rod 31 stirs the high-pressure gas-containing water in the well body 50 to generate high-pressure microbubbles; Step S40: Adjust the rotation speed of the output shaft or the rotating shaft or both to adjust the size of the high-pressure microbubbles.

[0048] By controlling the control mechanism 40 to control all the moving components 22 to move at the same speed and in the same direction, it also drives all the stirring rods 31 to move around the well body 50 at the same speed and in the same direction. At the same time, by controlling the control mechanism 40 to control all the stirring rods 31 to rotate at the same speed and in the same direction, it also enables the stirring rods 31 to obtain the effect of synchronous "revolution" and "rotation", improving the stirring effect on the high-pressure gas-containing water and ensuring the generation of microbubbles.

[0049] Applying the high-pressure microbubble generating device of the present application can not only control the size of the formed microbubbles according to the needs of users, be convenient to use, be flexibly operable, and have high practicability, but also can increase the stirring area and effect, and extend the service life of the device. This device can directly generate microbubbles under high-pressure conditions by stirring and foaming at the bottom of the well. The generated microbubbles can directly enter the formation, and then displace the oil in the low-porosity formation of the formation. Moreover, the generated microbubbles have a certain plugging effect on the large pores to achieve the purpose of microbubble displacement.

[0050] Embodiment 1

[0051] As Figures 1 to 5 shown, in this embodiment, the moving mechanism 20 includes two moving components 22, and the two moving components 22 are arranged oppositely. Each of the two moving components 22 is connected to a stirring mechanism 30, and two stirring rods 31 are arranged at intervals in one stirring mechanism 30.

[0052] As Figure 2As shown, one side of the connecting part 242 facing the bottom of the well has a toothed rail 25, the connecting wheel 232 meshes and moves on the toothed rail 25, and the first control part 231 is fixed on one side of the moving component 22 facing the bottom of the well. The toothed rail 25, the first control part 231, and the connecting wheel 232 are all arranged close to the bottom of the well. At the same time, through the meshing connection between the toothed rail 25 and the connecting wheel 232, the smooth movement can be ensured.

[0053] As Figure 2 shown, the fixing mechanism 10 further includes a plurality of fixing blocks 12, and the fixing blocks 12 are connected to the side of the annular fixing member 11 away from the bottom of the well to improve the connection stability on the well body 50.

[0054] Specifically, the control mechanism 40 includes a controller, and the controller is fixed on the inner wall of the well body 50. Preferably, it is fixed on the side of the annular fixing member 11 away from the bottom of the well. The controller can receive the control signals about the "revolution" and "rotation" of the stirring rod 31 sent by the external control device and control the movement effect of the stirring rod 31.

[0055] Optionally, the model of the controller is MAM-100.

[0056] Specifically, after assembling and installing each component, a plurality of fixing screws 13 fix the fixing blocks 12 and the controller, and at least a part of the fixing screws 13 is screwed into the well body 50 to ensure the fixing effect.

[0057] As Figure 3 shown, the power component 23 includes an installation box 233, and the installation box 233 is fixed on the side of the slider 221 close to the bottom of the well, and the installation box 233 is connected to the connection housing 321 to ensure the stable connection between the moving component 22 and the connection component 32.

[0058] Optionally, the installation box 233 is connected to the connection housing 321 and opened to form an installation groove 60, and the first control part 231 and the transmission component 33 are both arranged in the installation groove 60.

[0059] Specifically, the first control part 231 includes a first motor, and the first motor has an output shaft. The second control part 331 includes a second motor, and the second motor has a rotating shaft. The first motors on both sides control the two moving components 22 to move from both ends to the same side respectively. At the same time, the second motor is controlled to drive the first gear to rotate. The first gear is meshed with the second gear, and the worm is driven to rotate through the connecting rod. The worm drives the two worm wheels to rotate, so as to control the two stirring rods 31 to rotate, and the stirring blades 34 at the lower ends of the stirring rods 31 are driven to rotate to stir the high-pressure gas-containing water. By the combined use of the controller, the moving component 22 and the stirring mechanism 30, according to the needs of the user, the size of the microbubbles formed can be controlled, which is convenient to use, can be flexibly operated, and has high practicability.

[0060] In this embodiment, a large number of microbubbles can be generated through the stirring of these four stirring rods 31 and the stirring blades 34 to meet the construction requirements. And when the speed is changed, the four stirring blades 34 change the stirring speed simultaneously, and with the cooperation of the first motor and the second motor, different-sized microbubbles can be quickly generated to meet the construction needs. That is, the inventive device can not only adjust the size of the microbubbles, but also quickly make changes in terms of changing the size of the microbubbles to meet the construction needs.

[0061] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0062] 1. By arranging the fixing mechanism 10 in the well body 50, the bottom-hole high-pressure microbubble generating device can be fixed in the well body 50, and then microbubbles can be directly generated at the bottom of the well to displace the oil in the formation.

[0063] 2. By arranging the annular fixing member 11 surrounding the inner wall of the well body 50 for one week, at least another part of the moving mechanism 20 can move along the circumferential direction of the annular fixing member 11, thereby driving the stirring rods 31 on the stirring mechanism 30 to move around the well body 50. At the same time, combined with the rotation of the stirring rods 31 themselves, the high-pressure gas-containing water in the well body 50 is stirred in a moving and rotating manner, so as to generate microbubbles and improve the stirring area and effect.

[0064] 3. By controlling the movement of the moving mechanism 20 and the stirring mechanism 30 through the control mechanism 40, the rotation of the stirring rods 31 around the well body 50 and the rotation speed of themselves can be controlled, thereby adjusting the size of the generated microbubbles. And when the speed is changed, all the stirring rods 31 can change the speed simultaneously, quickly generating different-sized microbubbles to meet the construction needs, and the sizes of the generated microbubbles are more uniform.

[0065] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0066] It should be noted that the terms used herein are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bottom hole high pressure micro bubble generating device, characterized in that: include: A fixing mechanism (10), the fixing mechanism (10) being used to be fixed in a well body (50), the fixing mechanism (10) comprising an annular fixing member (11), the annular fixing member (11) being arranged around the inner wall of the well body (50); a moving mechanism (20), at least a portion of the moving mechanism (20) being connected to the annular fixing member (11), and at least another portion of the moving mechanism (20) being capable of moving along a circumferential direction of the annular fixing member (11); at least one stirring mechanism (30), at least a portion of the stirring mechanism (30) being connected to the moving mechanism (20) so that the stirring mechanism (30) can move along the circumferential direction of the annular fixing member (11), the stirring mechanism (30) having at least one stirring rod (31) extending toward the bottom of the well body (50), the stirring rod (31) being used to stir the high-pressure gas-containing water in the well body (50) to generate microbubbles, and the stirring rod (31) being able to rotate about the central axis of the stirring rod (31); A control mechanism (40) is used to control the movement of the moving mechanism (20) and the stirring mechanism (30).

2. The bottom hole high pressure micro bubble generating device according to claim 1, characterized in that: The moving mechanism (20) comprises: A track assembly (21), the track assembly (21) comprising an annular track (24), the annular track (24) being arranged in contact with the inner wall of the annular fixing member (11); at least one moving assembly (22), at least a portion of the moving assembly (22) being slidably connected to the annular track (24); At least one power assembly (23), the power assembly (23) and the moving assembly (22) are arranged in a one-to-one correspondence, at least a part of the power assembly (23) is connected to the moving assembly (22), at least another part of the power assembly (23) is connected to the annular track (24), and the power assembly (23) can drive the moving assembly (22) to move.

3. The bottom hole high pressure micro bubble generating device according to claim 2, characterized in that: The power assembly (23) comprises: a first control part (231), at least a portion of which is fixedly connected to the moving assembly (22), the first control part (231) having an output shaft, and the control mechanism (40) being capable of controlling the rotation speed of the output shaft; A connecting wheel (232), wherein the connecting wheel (232) is sleeved on the output shaft, and the connecting wheel (232) is meshingly connected with the annular track (24) so ​​as to drive the moving assembly (22) to move when the connecting wheel (232) moves along the annular track (24).

4. The bottom hole high pressure micro bubble generating device according to claim 3, characterized in that: The annular track (24) comprises: A sliding portion (241), the sliding portion (241) being slidably connected to the moving component (22); A connecting portion (242), wherein the connecting portion (242) is arranged relative to the sliding portion (241) and close to the annular fixing member (11), and the connecting wheel (232) is meshingly connected with the connecting portion (242).

5. The bottom hole high pressure micro bubble generating device according to claim 4, characterized in that: The connecting part (242) has a rack (25) on the side facing the well bottom, the connecting wheel (232) engages with the rack (25) and moves, and the first control part (231) is fixed on the side of the moving component (22) facing the well bottom.

6. The bottom hole high pressure micro bubble generating device according to claim 4, characterized in that: The connecting portion (242) is located in the middle of the sliding portion (241), so that one side of the longitudinal section of the annular track (24) is in a "T" shape. The moving component (22) comprises a sliding block (221), the sliding block (221) is provided with a sliding groove (222), and the sliding block (221) is slidably sleeved outside the sliding portion (241).

7. The bottom hole high pressure micro bubble generating device according to claim 6, characterized in that: The top and / or bottom of the sliding portion (241) is provided with a rolling groove (243), and the rolling groove (243) is an annular rolling groove (243). The track assembly (21) further includes a plurality of balls (244), and the balls (244) are arranged in the annular rolling groove (243) and in contact with the sliding block (221).

8. The bottom hole high pressure micro bubble generating device according to claim 2, characterized in that: The moving mechanism (20) comprises two moving components (22), and the two moving components (22) are arranged opposite to each other.

9. The bottom hole high pressure micro bubble generating device according to any one of claims 1 to 8, characterized in that: The stirring mechanism (30) comprises: A connecting assembly (32), the connecting assembly (32) comprising a connecting shell (321), the connecting shell (321) having a receiving space, the connecting shell (321) being connected to the moving mechanism (20), so that the moving mechanism (20) drives the stirring mechanism (30) to move along the circumferential direction of the annular fixing member (11); A transmission assembly (33), wherein the transmission assembly (33) is arranged in the accommodating space, and one end of the stirring rod (31) is connected to the transmission assembly (33), so that the transmission assembly (33) drives the stirring rod (31) to rotate.

10. The bottom hole high pressure micro bubble generating device according to claim 9, characterized in that: The transmission assembly (33) comprises: A second control unit (331), the second control unit (331) having a rotation shaft extending toward the bottom of the well, the control mechanism (40) being capable of controlling the rotation speed of the rotation shaft; A first gear (332), wherein the first gear (332) is sleeved on the rotating shaft; a second gear (333), the second gear (333) being meshedly connected with the first gear (332); a connecting rod (334), one end of the connecting rod (334) being connected to the second gear (333), so that the second gear (333) drives the connecting rod (334) to rotate; a worm (335), one end of the worm (335) being connected to the other end of the connecting rod (334), and the worm (335) and the connecting rod (334) extending in a direction perpendicular to the stirring rod (31); At least one worm wheel (336), the worm wheel (336) being connected to the worm (335), the worm wheel (336) being arranged in one-to-one correspondence with the stirring rod (31), and the worm wheel (336) being connected to one end of the stirring rod (31) so that the worm wheel (336) drives the stirring rod (31) to rotate.

11. The bottom hole high pressure micro bubble generating device according to any one of claims 1 to 8, characterized in that: The stirring mechanism (30) further comprises at least one stirring blade (34), wherein the stirring blade (34) is arranged in a one-to-one correspondence with the stirring rod (31), and the stirring blade (34) is arranged at one end of the stirring rod (31) close to the bottom of the well.

12. The bottom hole high pressure micro bubble generating device according to any one of claims 1 to 8, characterized in that: The stirring mechanism (30) comprises a plurality of stirring rods (31), and the plurality of stirring rods (31) are arranged at intervals.

13. A method for generating high-pressure microbubbles at the bottom of a well, characterized in that: The bottom hole high pressure micro bubble generating device according to any one of claims 1 to 12 is used, and the bottom hole high pressure micro bubble generating method comprises: The control mechanism (40) of the downhole high-pressure micro-bubble generating device controls the output shafts of the first control parts (231) of all the power components (23) of the moving mechanism (20) of the downhole high-pressure micro-bubble generating device to rotate synchronously, so as to drive all the moving components (22) of the moving mechanism (20) to move at the same speed and direction; The control mechanism (40) controls the rotating shafts of the second control parts (331) of the transmission assemblies (33) of all the stirring mechanisms (30) of the bottom-hole high-pressure micro-bubble generating device to rotate synchronously, so as to drive the stirring rods (31) of all the stirring mechanisms (30) to rotate at the same speed and direction; The stirring rod (31) stirs the high-pressure gas-containing water in the well body (50) to generate high-pressure microbubbles; The rotation speed of the output shaft and / or the rotation shaft is adjusted to adjust the size of the high-pressure microbubbles.

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