A high sand-conveying rotary jet perforation tool

Abstract

The application discloses a high-sand-carrying rotary jet fracturing tool capable of automatically aligning a borehole, comprising a height adjusting mechanism, an angle adjusting mechanism, a recognition mechanism and a control mechanism, wherein the height adjusting mechanism comprises a first sleeve, a second sleeve and a first telescopic driving piece; the angle adjusting mechanism comprises a rotary joint and a second telescopic driving piece; the recognition mechanism comprises a third sleeve and a plurality of recognition probes; the control mechanism is used for detecting the position of the borehole according to the recognition probes, adjusting the orientation of the ejection hole through the angle adjusting mechanism, adjusting the height of the ejection hole through the height adjusting mechanism, and aligning the ejection hole with the borehole. The recognition probes are installed on the outer sidewall of the third sleeve, the position of the borehole on the wellbore is detected through the recognition probes, the orientation of the ejection hole is adjusted through the angle adjusting mechanism, the height of the ejection hole is adjusted through the height adjusting mechanism, and the ejection hole is aligned with the borehole, so that the accuracy of fracturing operation is improved, and the fracturing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of fracturing tool technology, and specifically to a high-sand-carrying rotating jet fracturing tool that can automatically align with the borehole. Background Technology

[0002] Perforation and fracturing are two key steps in oil and gas extraction. They play different roles, but share the common goal of improving the efficiency of oil and gas extraction.

[0003] Perforation, a procedure preceding well testing, involves lowering a perforating gun to a predetermined depth and using a perforating spring to break through the casing and cement sheath at the target formation, creating a connecting channel between the formation and the wellbore. This connecting channel is fundamental for subsequent oil and gas extraction operations, enabling smooth production. The selection of perforation technology requires comprehensive consideration of factors such as the characteristics of the oil layer and fluids, formation damage, casing procedures, and oilfield production conditions.

[0004] Fracturing, on the other hand, involves injecting high-pressure fluid (fracturing fluid) into the formation after perforation to create artificial fractures. This allows oil and gas to flow more smoothly from the reservoir to the bottom of the well and then be lifted to the surface. During fracturing, it is necessary to determine the required size of the artificial fractures in the formation and select appropriate fracturing fluid and proppant. The fracturing fluid is primarily used to open the artificial fractures, while the proppant is used to support these fractures and prevent them from closing.

[0005] However, traditional fracturing operations face several challenges that directly impact efficiency and success rates. For example, inaccurate borehole alignment is a significant problem. Current borehole alignment technology has limitations, preventing fracturing fluid from accurately entering the reservoir, thus affecting the accuracy and effectiveness of the entire operation. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a high-sand-carrying rotating jet fracturing tool that can automatically align with the blast hole, thus solving the technical problem that the jet orifice of the fracturing tool is difficult to accurately align with the blast hole in the prior art.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0008] This invention provides a high-sand-carrying rotating jet fracturing tool that can automatically align with a blast hole, including a height adjustment mechanism. The height adjustment mechanism includes a first sleeve, a second sleeve, and a first telescopic drive. One end of the first sleeve is used to connect to a drill rod, and one end of the second sleeve is slidably inserted into the other end of the first sleeve. The first telescopic drive is connected to both the first sleeve and the second sleeve and is used to drive the two to move away from or closer to each other.

[0009] An angle adjustment mechanism, comprising a rotary joint and a second telescopic drive component, wherein one end of the rotary joint is threadedly rotatably connected to the other end of the second sleeve, and the second telescopic drive component is connected to both the second sleeve and the rotary joint and is used to drive the two to move away from or closer to each other;

[0010] An identification mechanism, comprising a third sleeve and a plurality of identification probes, wherein one end of the third sleeve is fixed to the other end of the rotary joint, and the other end of the third sleeve is provided with an ejection port, and each of the identification probes is mounted on the outer side wall of the third sleeve; and,

[0011] The control mechanism is used to detect the position of the blast hole by the identification probe, and adjust the orientation of the firing hole by the angle adjustment mechanism and adjust the height of the firing hole by the height adjustment mechanism so that the firing hole is aligned with the blast hole.

[0012] In some embodiments, an insertion ring is formed at one end of the second sleeve, the insertion ring is slidably inserted into the other end of the first sleeve, a sealed first receiving cavity is formed between the outer side wall of the insertion ring and the inner side wall of the first sleeve, a first flow channel is formed inside the insertion ring, one end of the first flow channel is connected to the first receiving cavity, a second receiving cavity is formed inside one end of the second sleeve and is connected to the other end of the first flow channel, and a first mounting cavity is also formed inside one end of the second sleeve; the first telescopic drive member includes a first magnetic sliding sleeve, a first solenoid and a first MCU controller, the first magnetic sliding sleeve is slidably and sealed in the second receiving cavity, the second receiving cavity, the first flow channel and the first receiving cavity are encapsulated with fluid, the first solenoid is installed in the first mounting cavity and is magnetically connected to the first magnetic sliding sleeve, the first MCU controller is electrically connected to the first solenoid and is used to control the magnitude of the current passing through the first solenoid.

[0013] In some embodiments, the first solenoid and the first magnetic sleeve are magnetically repelled when the first solenoid is energized.

[0014] In some embodiments, an internal thread is formed on the inner sidewall of the other end of the second sleeve; the rotary joint includes a threaded sleeve, a connecting tube and a plug connected in sequence, an external thread that mates with the internal thread is formed on the outer sidewall of the threaded sleeve, the threaded sleeve is rotatably connected to the other end of the second sleeve, and the plug is fixedly connected to one end of the third sleeve.

[0015] In some embodiments, a third receiving cavity, a second flow channel, a fourth receiving cavity, and a second mounting cavity are formed within the inner wall of the other end of the second sleeve. One end of the second flow channel communicates with the third receiving cavity, and the other end of the second flow channel communicates with the fourth receiving cavity. The second telescopic drive includes a second magnetic sleeve, a second solenoid, a second MCU controller, a piston, and a push rod. The second magnetic sleeve is slidably and sealed within the third receiving cavity. Fluid is encapsulated within the third receiving cavity, the second flow channel, and the fourth receiving cavity. The second solenoid is installed within the second mounting cavity and is magnetically connected to the second magnetic sleeve. The second MCU controller is electrically connected to the second solenoid and is used to control the magnitude of the current passing through the second solenoid. The piston is slidably and sealed within the fourth receiving cavity. One end of the push rod is fixedly connected to the piston, and the other end of the push rod is fixedly connected to the connector.

[0016] In some embodiments, the second solenoid and the second magnetic sleeve magnetically repel each other when the second solenoid is energized.

[0017] In some embodiments, a baffle is formed inside the third sleeve, and a first through hole is provided on the baffle for fracturing fluid to pass through; the high-spar-carrying rotating jet fracturing tool that can automatically align with the borehole also includes a pressurizing mechanism, which includes a baffle and a disc spring. The baffle is used to fit against the baffle, one end of the disc spring is fixed inside the third sleeve, and the other end of the disc spring is fixedly connected to the baffle. A second through hole is provided on the baffle, and when the baffle fits against the baffle, the second through hole is offset from the first through hole.

[0018] In some embodiments, a spiral groove is formed on the inner wall of the third sleeve, and the surface of the spiral groove is a second-order continuous curved surface.

[0019] In some embodiments, the high-sand-carrying rotating jet fracturing tool capable of automatically aligning with the borehole further includes a guiding mechanism. The guiding mechanism includes a plurality of guide rods, a plurality of guide wheels, and a plurality of telescopic hydraulic cylinders. One end of each guide rod is hinged to the outer wall of the third sleeve, and the guide rods are evenly arranged along the outer wall of the third sleeve. Each guide wheel is hinged to the other end of the corresponding guide rod, and each guide wheel is used to abut against the inner wall of the wellbore. One end of each telescopic hydraulic cylinder is hinged to the outer wall of the third sleeve, and the other end of each telescopic hydraulic cylinder is hinged to the middle of the corresponding guide rod.

[0020] In some embodiments, a fracturing fluid temperature detection device is also installed on the outer wall of the third sleeve.

[0021] Compared with existing technologies, the beneficial effects of the high-spar-carrying rotary jet fracturing tool device with automatic alignment of blast holes provided by the present invention are as follows: During use, one end of the first sleeve is connected to the drill pipe, the drill pipe is lowered into the wellbore, and images of the inner wall of the wellbore are continuously captured by the identification probe, and blast holes are identified. When the identification probe detects a blast hole, its location and height are first determined, and then the control mechanism controls the extension or retraction of the second telescopic drive component. When the second telescopic drive component extends or retracts, the rotary joint rotates, thereby driving the third sleeve to rotate. When the jet on the third sleeve... When the ejection port rotates to the same position as the borehole, the second telescopic drive stops extending or retracting. Then, the control mechanism controls the first telescopic drive to extend or retract. At this time, the third sleeve will rise or fall. When the ejection port on the third sleeve rises or falls to the same height as the borehole, the first telescopic drive stops extending or retracting. At this time, the ejection port and the borehole are aligned. Then, fracturing fluid is introduced into the drill pipe. The fracturing fluid enters the drill pipe, the first sleeve, the second sleeve, the rotary joint and the third sleeve in sequence, and finally exits from the ejection port and enters the borehole, and then enters the reservoir to fracturing the reservoir.

[0022] The technical solution provided by this invention involves installing an identification probe on the outer wall of the third sleeve, detecting the position of the blast hole on the wellbore using the identification probe, adjusting the orientation of the perforation hole using an angle adjustment mechanism, and adjusting the height of the perforation hole using a height adjustment mechanism, so that the perforation hole is aligned with the blast hole. This can improve the accuracy of fracturing operations and enhance the fracturing effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a high-sand-carrying rotating jet fracturing tool that can automatically align with the blast hole, provided in an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a high-spar-carrying rotating jet fracturing tool that can automatically align with the blast hole.

[0025] Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle;

[0026] Figure 4 yes Figure 2 A magnified view of a portion of region B in the middle;

[0027] Figure 5 yes Figure 2 A magnified view of a portion of region C in the middle;

[0028] Figure 6 yes Figure 2 A magnified view of a portion of region D in the middle;

[0029] Explanation of reference numerals in the attached drawings: 1-Height adjustment mechanism, 11-First sleeve, 12-Second sleeve, 121-Insert ring, 1211-First flow channel, 122-First receiving cavity, 123-Second receiving cavity, 124-Third receiving cavity, 125-Second flow channel, 126-Fourth receiving cavity, 13-First telescopic drive component, 131-First magnetic sliding sleeve, 132-First solenoid, 133-First MCU controller, 2-Angle adjustment mechanism, 21-Rotary joint, 211-Threaded sleeve, 212-Connecting pipe, 213 - Connector, 22- Second telescopic drive, 221- Second magnetic sleeve, 222- Second solenoid, 223- Second MCU controller, 224- Piston, 225- Push rod, 3- Identification mechanism, 31- Third sleeve, 311- Injection hole, 312- Partition, 313- Spiral groove, 314- Fracturing fluid temperature detection element, 32- Identification probe, 4- Pressure boosting mechanism, 41- Baffle, 411- Second through hole, 42- Disc spring, 5- Guide mechanism, 51- Guide rod, 52- Guide wheel, 53- Telescopic hydraulic cylinder. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] To address the technical problem of the difficulty in accurately aligning the jet orifice of a fracturing tool with the borehole, this invention provides a high-sand-carrying rotating jet fracturing tool that can automatically align with the borehole, enabling precise alignment between the jet orifice of the fracturing tool and the borehole.

[0032] Please see Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural diagram of a high-spar-carrying rotating jet fracturing tool that can automatically align with the blast hole, according to one embodiment of the present invention. Figure 2 yes Figure 1 The cross-sectional structural diagram shows that the high-sand-carrying rotating jet fracturing tool that can automatically align with the blast hole provided in one embodiment of the present invention includes a height adjustment mechanism 1, an angle adjustment mechanism 2, an identification mechanism 3, and a control mechanism.

[0033] The height adjustment mechanism 1 includes a first sleeve 11, a second sleeve 12 and a first telescopic drive member 13. One end of the first sleeve 11 is used to connect to a drill rod (not shown), and one end of the second sleeve 12 is slidably inserted into the other end of the first sleeve 11. The first telescopic drive member 13 is connected to both the first sleeve 11 and the second sleeve 12 and is used to drive the two to move away from or closer to each other.

[0034] The angle adjustment mechanism 2 includes a rotary joint 21 and a second telescopic drive member 22. One end of the rotary joint 21 is threadedly connected to the other end of the second sleeve 12. The second telescopic drive member 22 is connected to both the second sleeve 12 and the rotary joint 21 and is used to drive them to move away from or towards each other. In use, when the second telescopic drive member 22 drives the second sleeve 12 and the rotary joint 21 to move away from or towards each other, the rotary joint 21 will rotate during the movement, thereby realizing the angle adjustment function.

[0035] The identification mechanism 3 includes a third sleeve 31 and several identification probes 32. One end of the third sleeve 31 is fixed to the other end of the rotary joint 21, and the other end of the third sleeve 31 is provided with an ejection hole 311. Each identification probe 32 is installed on the outer wall of the third sleeve 31. It should be understood that, in order to adapt to the dark environment underground, the identification probe 32 should be equipped with its own light source. The identification probe 32 can be a visible light camera or an infrared camera or other types of cameras. The number of identification probes 32 is at least three, thereby achieving full coverage detection in the circumferential direction.

[0036] The control mechanism is electrically connected to the identification probe 32, the first telescopic drive 13, and the second telescopic drive 22. The control mechanism is used to detect the position of the blast hole using the identification probe 32, and based on the position of the blast hole, adjust the orientation of the firing port 311 using the angle adjustment mechanism 2, and adjust the height of the firing port 311 using the height adjustment mechanism 1, so that the firing port 311 is aligned with the blast hole. In this embodiment, the control mechanism can be a controller.

[0037] In use, one end of the first sleeve 11 is connected to the drill pipe, and the drill pipe is lowered into the wellbore. The identification probe 32 continuously captures images of the inner wall of the wellbore and identifies blast holes. When the identification probe 32 detects a blast hole, it first determines the azimuth and height of the blast hole. Then, the control mechanism controls the extension or retraction of the second telescopic drive member 22. When the second telescopic drive member 22 extends or retracts, the rotary joint 21 rotates, thereby driving the third sleeve 31 to rotate. When the ejection port 311 on the third sleeve 31 rotates to the same position as the blast hole, the second telescopic drive member 22 stops. The first telescopic drive 13 is then extended or shortened by the control mechanism, which in turn controls the extension or shortening of the first telescopic drive 13. At this time, the third sleeve 31 will rise or fall. When the ejection hole 311 on the third sleeve 31 rises or falls to the same height as the borehole, the first telescopic drive 13 stops extending or shortening. At this time, the ejection hole 311 is aligned with the borehole. Then, fracturing fluid is introduced into the drill pipe. The fracturing fluid enters the drill pipe, the first sleeve 11, the second sleeve 12, the rotary joint 21 and the third sleeve 31 in sequence, and finally exits from the ejection hole 311 and enters the borehole, and then enters the reservoir to fracturing the reservoir.

[0038] The technical solution provided by the present invention is to install an identification probe 32 on the outer wall of the third sleeve 31, detect the position of the blast hole on the wellbore by the identification probe 32, adjust the orientation of the perforation hole 311 by the angle adjustment mechanism 2, and adjust the height of the perforation hole 311 by the height adjustment mechanism 1, so that the perforation hole 311 is aligned with the blast hole, thereby improving the accuracy of fracturing operations and improving the fracturing effect.

[0039] In one embodiment, please refer to Figure 2 and Figure 3 The second sleeve 12 has an insertion ring 121 formed at one end, which is slidably inserted into the other end of the first sleeve 11. A sealed first receiving cavity 122 is formed between the outer side wall of the insertion ring 121 and the inner side wall of the first sleeve 11. A first flow channel 1211 is formed inside the insertion ring 121, and one end of the first flow channel 1211 communicates with the first receiving cavity 122. A second receiving cavity 123 is formed inside one end of the second sleeve 12, which communicates with the other end of the first flow channel 1211. A first mounting cavity is also formed inside one end of the second sleeve 12. The first telescopic drive component 13 includes a first magnetic sleeve 131, a first solenoid 132, and a first MCU controller 133. The first magnetic sleeve 131 is slidably and sealed within the second receiving cavity 123. Fluid is encapsulated within the second receiving cavity 123, the first flow channel 1211, and the first receiving cavity 122. The first solenoid 132 is installed within the first mounting cavity and is magnetically connected to the first magnetic sleeve 131. The first MCU controller 133 is electrically connected to the first solenoid 132 and is used to control the magnitude of the current passing through the first solenoid 132.

[0040] In this embodiment, when it is necessary to drive the first sleeve 11 and the second sleeve 12 to move closer or further apart, the magnitude of the current on the first solenoid 132 is controlled by the first MCU controller 133. When the current on the first solenoid 132 increases, the magnetic field strength generated by the first solenoid 132 increases, thereby acting on the first magnetic sleeve 131 through magnetic force, causing the first magnetic sleeve 131 to move away from the first solenoid 132 (upward). When the first magnetic sleeve 131 moves upward, the fluid encapsulated in the second receiving cavity 123 enters the first receiving cavity 122 through the first flow channel 1211, thereby pushing the first sleeve 11 to move downward, causing the first sleeve 11 and the second sleeve 12 to move closer together; conversely, when the current on the first solenoid 132 decreases, the first sleeve 11 moves upward, and the first sleeve 11 and the second sleeve 12 move further apart, thereby realizing the function of the height adjustment mechanism 1.

[0041] In one embodiment, please refer to Figure 2 and Figure 3When the first solenoid 132 is energized, it magnetically repels the first magnetic sleeve 131.

[0042] In one embodiment, please refer to Figure 2 and Figure 4 The inner wall of the other end of the second sleeve 12 has an internal thread. The rotary joint 21 includes a threaded sleeve 211, a connecting pipe 212, and a plug 213 that are fixedly connected in sequence. The outer wall of the threaded sleeve 211 has an external thread that mates with the internal thread. The threaded sleeve 211 is rotatably connected to the other end of the second sleeve 12, and the plug 213 is fixedly connected to one end of the third sleeve 31. In this embodiment, in order to reduce the friction between the threaded sleeve 211 and the second sleeve 12, the threaded sleeve 211 can be made of a ball bearing seat, so that the threaded sleeve 211 and the second sleeve 12 are in contact through balls, which can reduce the frictional resistance when the threaded sleeve 211 rotates.

[0043] In one embodiment, please refer to Figure 2 and Figure 4 The inner wall of the other end of the second sleeve 12 forms a third receiving cavity 124, a second flow channel 125, a fourth receiving cavity 126, and a second mounting cavity. One end of the second flow channel 125 communicates with the third receiving cavity 124, and the other end of the second flow channel 125 communicates with the fourth receiving cavity 126. The second telescopic drive member 22 includes a second magnetic sliding sleeve 221, a second solenoid 222, a second MCU controller 223, a piston 224, and a push rod 225. The second magnetic sliding sleeve 221 is slidably and sealingly connected to the third receiving cavity 124. The third receiving cavity 124 and the second flow channel 125... The fourth receiving cavity 126 contains a fluid. The second solenoid 222 is installed in the second mounting cavity and is magnetically connected to the second magnetic sleeve 221. The second MCU controller 223 is electrically connected to the second solenoid 222 and is used to control the magnitude of the current passing through the second solenoid 222. The piston 224 is sealed and slidably connected in the fourth receiving cavity 126. The piston 224 is annular and can rotate in the fourth receiving cavity 126. One end of the push rod 225 is fixedly connected to the piston 224, and the other end of the push rod 225 is fixedly connected to the connector 213.

[0044] In this embodiment, when the rotary joint 21 needs to be driven to rotate, the second MCU controller 223 controls the magnitude of the current on the second solenoid 222. When the current on the second solenoid 222 increases, the magnetic field strength generated by the second solenoid 222 increases, thereby acting on the second magnetic sleeve 221 through magnetic force, causing the second magnetic sleeve 221 to move away from the second solenoid 222 (upward). When the second magnetic sleeve 221 moves upward, the volume of the third receiving cavity 124 increases, and the fluid encapsulated in the fourth receiving cavity 126 enters the third receiving cavity 124 through the second flow channel 125, reducing the fluid encapsulated in the fourth receiving cavity 126. This causes the piston 224 to move upward. The rotary joint 21 is moved upward by the push rod 225. When the rotary joint 21 moves upward, the threaded sleeve 211 moves upward. Since the threaded sleeve 211 is threadedly connected to the second sleeve 12 and the second sleeve 12 cannot rotate, when the threaded sleeve 211 moves upward inside the second sleeve 12, the threaded sleeve 211 will rotate clockwise or counterclockwise (at this time, the piston 224 also rotates), thereby driving the lower third sleeve 31 to rotate. Conversely, when the current on the first solenoid 132 decreases, the rotary joint 21 moves downward, and the threaded sleeve 211 will rotate counterclockwise or clockwise, thereby driving the lower third sleeve 31 to rotate, thus realizing the function of the angle adjustment mechanism 2.

[0045] In one embodiment, please refer to Figure 2 and Figure 4 When the second solenoid 222 is energized, it magnetically repels the second magnetic sleeve 221.

[0046] In one embodiment, please refer to Figure 2 and Figure 5 The third sleeve 31 also forms a partition 312, and the partition 312 has a first through hole for fracturing fluid to pass through. The high-spar-carrying rotating jet fracturing tool that can automatically align with the borehole also includes a pressurizing mechanism 4. The pressurizing mechanism 4 includes a baffle 41 and a disc spring 42. The baffle 41 is used to fit against the partition 312. One end of the disc spring 42 is fixed inside the third sleeve 31, and the other end of the disc spring 42 is fixedly connected to the baffle 41. The baffle 41 has a second through hole 411. When the baffle 41 fits against the partition 312, the second through hole 411 is offset from the first through hole.

[0047] In this embodiment, when the fracturing fluid pressure is less than the compression pressure of the disc spring 42, the fracturing fluid cannot push open the baffle 41 to accumulate pressure, and the pressure gradually increases. When the fracturing fluid pressure exceeds the compression pressure of the disc spring 42, the fracturing fluid pushes open the baffle 41 and is discharged through the first through hole and the second through hole 411 to the lower section of the third sleeve 31, and finally ejected from the injection hole 311. In this embodiment, by using the baffle 41 and disc spring 42 to accumulate and release the fracturing fluid, the pressure of the fracturing fluid can be increased, thereby improving the fracturing effect.

[0048] In one embodiment, please refer to Figure 2 and Figure 6 A spiral groove 313 is formed on the inner wall of the third sleeve 31, and the surface of the spiral groove 313 is a second-order continuous curved surface.

[0049] In traditional fracturing operations, the fracturing fluid pumped from the surface to the well may cause uneven mixing of proppant due to static pressure, reducing the uniform distribution and migration of fluid and proppant in the reservoir. In this embodiment, a spiral groove 313 is formed on the inner wall of the third sleeve 31. When the fracturing fluid passes through the spiral groove 313, it will form a swirling flow, thereby making the proppant in the fracturing fluid uniformly distributed in the fracturing fluid. At the same time, the surface of the spiral groove 313 is a second-order continuous curved surface, which can reduce the energy loss of the fracturing fluid.

[0050] In one embodiment, please refer to Figure 2 and Figure 6 The high-spar-carrying rotary jet fracturing tool capable of automatically aligning with the blast hole also includes a guiding mechanism 5. The guiding mechanism 5 comprises several guide rods 51, several guide wheels 52, and several telescopic hydraulic cylinders 53. One end of each guide rod 51 is hinged to the outer wall of the third sleeve 31, and the guide rods 51 are evenly arranged along the outer wall of the third sleeve 31. Each guide wheel 52 is hinged to the other end of its corresponding guide rod 51, and each guide wheel 52 is used to abut against the inner wall of the wellbore. One end of each telescopic hydraulic cylinder 53 is hinged to the outer wall of the third sleeve 31, and the other end of each telescopic hydraulic cylinder 53 is hinged to the middle of its corresponding guide rod 51. During use, when the fracturing tool is lowered into the wellbore, the guide wheels 52 are always held against the inner wall of the wellbore by the telescopic hydraulic cylinders 53, keeping the fracturing tool in a centered position and ensuring that the high-spar-carrying rotary jet fracturing device capable of automatically aligning with the blast hole can be smoothly lowered to the predetermined wellbore position.

[0051] In one embodiment, please refer to Figure 1 and Figure 2The outer wall of the third sleeve 31 is also equipped with a fracturing fluid temperature detection device 314. The fracturing fluid temperature detection device 314 is used to monitor the temperature of the fracturing fluid in real time and transmit the sensed data to the MCU. The MCU adjusts the working parameters of the fracturing device according to the temperature change to ensure that the fracturing effect can be maintained optimally under different temperature conditions.

[0052] To better understand this invention, the following is combined with... Figures 1 to 6 The technical solution of the present invention is described in detail as follows: In use, one end of the first sleeve 11 is connected to the drill pipe, the drill pipe is lowered into the wellbore, and images of the inner wall of the wellbore are continuously captured by the identification probe 32, and blast hole identification is performed. When the identification probe 32 detects a blast hole, the orientation and height of the blast hole are first determined, and then the control mechanism controls the extension or retraction of the second telescopic drive member 22. When the second telescopic drive member 22 extends or retracts, the rotary joint 21 rotates, thereby driving the third sleeve 31 to rotate. When the ejection hole 311 on the third sleeve 31 rotates to the same orientation as the blast hole, the second... The telescopic drive 22 stops extending or shortening. Then, the control mechanism controls the first telescopic drive 13 to extend or shorten. At this time, the third sleeve 31 will rise or fall. When the ejection hole 311 on the third sleeve 31 rises or falls to the same height as the borehole, the first telescopic drive 13 stops extending or shortening. At this time, the ejection hole 311 is aligned with the borehole. Then, fracturing fluid is introduced into the drill pipe. The fracturing fluid enters the drill pipe, the first sleeve 11, the second sleeve 12, the rotary joint 21 and the third sleeve 31 in sequence. Finally, it is ejected from the ejection hole 311 and enters the borehole, and then enters the reservoir to fracturing the reservoir.

[0053] The technical solution provided by the present invention is to install an identification probe 32 on the outer wall of the third sleeve 31, detect the position of the blast hole on the wellbore by the identification probe 32, adjust the orientation of the perforation hole 311 by the angle adjustment mechanism 2, and adjust the height of the perforation hole 311 by the height adjustment mechanism 1, so that the perforation hole 311 is aligned with the blast hole, thereby improving the accuracy of fracturing operations and improving the fracturing effect.

[0054] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high-spar-carrying rotating jet fracturing tool that can automatically align with the blast hole, characterized in that, include: A height adjustment mechanism, comprising a first sleeve, a second sleeve, and a first telescopic drive member, wherein one end of the first sleeve is used to connect to the drill rod, one end of the second sleeve is slidably inserted into the other end of the first sleeve, and the first telescopic drive member is connected to both the first sleeve and the second sleeve and is used to drive the two to move away from or closer to each other. An angle adjustment mechanism, comprising a rotary joint and a second telescopic drive component, wherein one end of the rotary joint is threadedly rotatably connected to the other end of the second sleeve, and the second telescopic drive component is connected to both the second sleeve and the rotary joint and is used to drive the two to move away from or closer to each other; An identification mechanism, comprising a third sleeve and a plurality of identification probes, wherein one end of the third sleeve is fixed to the other end of the rotary joint, and the other end of the third sleeve is provided with an ejection port, and each of the identification probes is mounted on the outer side wall of the third sleeve; and, The control mechanism is used to detect the position of the blast hole by the identification probe, and adjust the orientation of the firing hole by the angle adjustment mechanism and adjust the height of the firing hole by the height adjustment mechanism so that the firing hole is aligned with the blast hole.

2. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 1, characterized in that, An insertion ring is formed at one end of the second sleeve, and the insertion ring is slidably inserted into the other end of the first sleeve. A sealed first receiving cavity is formed between the outer side wall of the insertion ring and the inner side wall of the first sleeve. A first flow channel is formed inside the insertion ring, and one end of the first flow channel communicates with the first receiving cavity. A second receiving cavity is formed inside one end of the second sleeve, which communicates with the other end of the first flow channel. A first mounting cavity is also formed inside one end of the second sleeve. The first telescopic drive component includes a first magnetic sleeve, a first solenoid, and a first MCU controller. The first magnetic sleeve is slidably and sealed within the second receiving cavity. The second receiving cavity, the first flow channel, and the fluid inside the first receiving cavity are encapsulated. The first solenoid is installed in the first mounting cavity and is magnetically connected to the first magnetic sleeve. The first MCU controller is electrically connected to the first solenoid and is used to control the magnitude of the current passing through the first solenoid.

3. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 2, characterized in that, When the first solenoid is energized, it magnetically repels the first magnetic sleeve.

4. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 1, characterized in that, An internal thread is formed on the inner wall of the other end of the second sleeve; The rotary joint includes a threaded sleeve, a connecting tube, and a plug connected in sequence. The outer wall of the threaded sleeve has an external thread that mates with the internal thread. The threaded sleeve is rotatably connected to the other end of the second sleeve, and the plug is fixedly connected to one end of the third sleeve.

5. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 4, characterized in that, The inner wall of the other end of the second sleeve is formed with a third receiving cavity, a second flow channel, a fourth receiving cavity and a second mounting cavity. One end of the second flow channel is connected to the third receiving cavity, and the other end of the second flow channel is connected to the fourth receiving cavity. The second telescopic drive component includes a second magnetic sleeve, a second solenoid, a second MCU controller, a piston, and a push rod. The second magnetic sleeve is slidably and sealed within the third receiving cavity. Fluid is encapsulated within the third receiving cavity, the second flow channel, and the fourth receiving cavity. The second solenoid is installed within the second mounting cavity and is magnetically connected to the second magnetic sleeve. The second MCU controller is electrically connected to the second solenoid and is used to control the magnitude of the current passing through the second solenoid. The piston is slidably and sealed within the fourth receiving cavity. One end of the push rod is fixedly connected to the piston, and the other end of the push rod is fixedly connected to the connector.

6. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 5, characterized in that, When the second solenoid is energized, it magnetically repels the second magnetic sleeve.

7. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 1, characterized in that, The third sleeve also has a baffle plate, and the baffle plate has a first through hole for fracturing fluid to pass through. The high-sand-carrying rotating jet fracturing tool that can automatically align with the blast hole also includes a pressurization mechanism. The pressurization mechanism includes a baffle and a disc spring. The baffle is used to fit against the partition. One end of the disc spring is fixed inside the third sleeve, and the other end of the disc spring is fixedly connected to the baffle. A second through hole is provided on the baffle. When the baffle fits against the partition, the second through hole is offset from the first through hole.

8. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 1, characterized in that, A spiral groove is formed on the inner wall of the third sleeve, and the surface of the spiral groove is a second-order continuous curved surface.

9. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the blast hole according to claim 1, characterized in that, The high-sand-carrying rotating jet fracturing tool that can automatically align with the blast hole also includes a guiding mechanism. The guiding mechanism includes several guide rods, several guide wheels, and several telescopic hydraulic cylinders. One end of each guide rod is hinged to the outer wall of the third sleeve. The guide rods are evenly arranged along the outer wall of the third sleeve. Each guide wheel is hinged to the other end of the corresponding guide rod. Each guide wheel is used to abut against the inner wall of the wellbore. One end of each telescopic hydraulic cylinder is hinged to the outer wall of the third sleeve. The other end of each telescopic hydraulic cylinder is hinged to the middle of the corresponding guide rod.

10. The high-spar-carrying rotating jet fracturing tool capable of automatically aligning with the borehole according to claim 1, characterized in that, The outer wall of the third sleeve is also equipped with a fracturing fluid temperature detection device.

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