Flexible guide drilling tool

Abstract

The invention relates to the technical field of drilling equipment, in particular to a flexible guide drilling tool which comprises a vehicle body, two front wheels are rotationally arranged on one side of the bottom of the vehicle body, a guide groove is fixedly formed in the top of the vehicle body, a circuit is arranged in the guide groove, and the output end of the circuit is electrically connected with a drill bit. A bearing mechanism for supporting a drill bit is arranged between the vehicle body and the guide groove, and two cleaning mechanisms for cleaning front wheels are arranged at the bottom of the vehicle body; in the forward rotation process of a rotating plate, downward thrust is provided for two first shifting rods through first sliding grooves at the same time, so that two square rods descend at the same time, the square rods descend to be matched with second shifting rods to drive a turnover frame to rotate, and cleaning blocks are made to be close to the corresponding front wheels; soil on the surfaces of the corresponding front wheels is scraped off through the slopes on the cleaning blocks, and it is avoided that a large amount of soil is attached, and the efficiency of the vehicle body normally moving to the next well drilling position is affected; the locking frames are tightly attached to the corresponding front wheels, so that the bicycle body is fixed.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically to a flexible directional drilling tool. Background Technology

[0002] In the field of oil and gas exploration, the application of directional drilling technology allows wellbore to drill deeper into the target layer according to a pre-designed trajectory. This technology requires downhole tool assemblies to complete directional drilling, angle build-up, angle stabilization drilling, and horizontal drilling, which can effectively develop thin oil and gas reservoirs. Among them, flexible directional drilling tools are innovative equipment that achieves precise control of wellbore trajectory through a flexible drive system. After completing a drilling operation, flexible directional drilling tools need to be transported to the next drilling site to continue working. During the current transportation process, the drill bit of the flexible directional drilling tool is subject to bumps and is easily damaged due to uneven ground. At the same time, when traveling on muddy ground, the front wheels of the transfer structure of the flexible directional drilling tool are prone to accumulating a large amount of mud, which affects the efficiency of its normal movement to the next drilling site. Summary of the Invention

[0003] The technical problem that this solution addresses is: How to solve the problem that when a flexible guide drilling tool is traveling on muddy ground, the front wheel of its transfer structure easily gets covered with a lot of mud, which affects its efficiency in moving to the next drilling site. How to solve the problem that the drill bit of the flexible directional drilling tool is easily damaged due to bumps during the transportation of the tool on uneven ground.

[0004] The objective of this invention can be achieved through the following technical solution: a flexible directional drilling tool, comprising a vehicle body, two front wheels rotatably mounted on one side of the bottom of the vehicle body, and a guide groove fixedly mounted on the top of the vehicle body, wherein a circuit is provided in the guide groove, and the output end of the circuit is electrically connected to a drill bit, a bearing mechanism for supporting the drill bit is provided between the vehicle body and the guide groove, and two cleaning mechanisms for cleaning the front wheels are provided at the bottom of the vehicle body. The bearing mechanism includes a rotating plate rotatably connected to the bottom of the guide groove via a pin. A buffer plate for placing drill bits is fixedly installed at one end of the rotating plate, and a first sliding groove is provided at the end of the rotating plate away from the buffer plate.

[0005] A further technical improvement of the present invention is that: two square rods are movably inserted into the vehicle body, the two square rods are arranged longitudinally, and the two square rods are respectively located on the front and rear sides of the rotating plate. A first lever is fixedly installed on the upper middle part of the square rods, and the first lever is slidably connected to the first sliding groove.

[0006] A further technical improvement of the present invention is that: a longitudinally arranged hydraulic cylinder is fixedly installed on the vehicle body, a pressing rod is fixedly installed on the extended end of the hydraulic cylinder, the pressing rod is slidably connected to the top of the rotating plate, and the hydraulic cylinder is located on the side of the pin shaft away from the buffer plate.

[0007] A further technical improvement of the present invention is that: the end of the rotating plate near the buffer plate is elastically connected to the vehicle body through a tension spring; during the forward rotation of the rotating plate, the first sliding groove provides a downward thrust to the two first levers simultaneously, causing the two square rods to descend simultaneously. As the square rods descend, they cooperate with the second lever to drive the tilting frame to rotate, bringing the cleaning block closer to the corresponding front wheel. During the forward movement of the vehicle, the inclined surface on the cleaning block scrapes off the mud on the surface of the corresponding front wheel, preventing a large amount of mud from adhering and affecting the efficiency of the vehicle moving normally to the next drilling site; when the next drilling site is reached, the extended end of the hydraulic cylinder is extended to its maximum length. Through the tension of the tension spring, the rotating plate rotates in the opposite direction, and the tops of the two square rods simultaneously enter the groove, driving the two tilting frames to reset and rotate, causing the cleaning block to move away from the corresponding front wheel. At the same time, the locking frame is in close contact with the corresponding front wheel, which serves to fix the vehicle body. Combined with the buffer plate and guide groove, this facilitates the drilling work of the drill bit.

[0008] A further technical improvement of the present invention is that: the cleaning mechanism includes a rotating seat fixedly connected to the bottom of the vehicle body, a flipping frame is rotatably provided at the bottom of the rotating seat, and a second sliding groove is provided at the end of the flipping frame near the square rod, and the bottom of one of the square rods is slidably connected to the corresponding second sliding groove through a second lever.

[0009] A further technical improvement of the present invention is that a cleaning block is fixedly installed at the end of the tilting frame away from the second slide groove. The cleaning block is located on the side of the tilting frame away from the center of the vehicle body, and the side of the cleaning block away from the tilting frame has an inclined surface for scraping off the mud on the surface of the corresponding front wheel. The inclined surface is set towards the ground. Since the inclined surface is facing the ground, the scraped mud will be scraped off to the front and rear sides of the vehicle body and will not affect the travel path of the subsequent rear wheels.

[0010] A further technical improvement of the present invention is that: a locking frame for locking the corresponding front wheel is fixedly installed at the end of the tilting frame near the cleaning block, and the locking frame is located above the corresponding cleaning block; after completing one drilling operation, the line is pulled back from the drilling site. During this process, the line is guided by a guide groove, which not only prevents it from deviating, but also facilitates the subsequent drilling operation; when the drill bit is retrieved and moved to the set position, the extended end of the hydraulic cylinder is controlled to retract to its shortest length, causing the rotating plate to rotate in the forward direction. The buffer plate provides support for the drill bit, preventing it from being bumped due to uneven ground and from colliding with other hard structures, which could cause damage.

[0011] A further technical improvement of the present invention is that: a groove is provided at the bottom of the guide groove, and a guide plate for guiding the tops of the two square rods is fixedly installed at the bottom of the guide groove, the position of the guide plate corresponding to the position of the groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are: In use, during the forward rotation of the rotating plate, the first sliding groove simultaneously provides downward thrust to the two first levers, causing the two square rods to descend. This descent of the square rods, in conjunction with the second lever, drives the tilting frame to rotate, bringing the cleaning block closer to the corresponding front wheel. As the vehicle moves forward, the inclined surface on the cleaning block scrapes away the mud from the surface of the corresponding front wheel, preventing excessive mud buildup that could affect the vehicle's efficiency in moving to the next drilling site. Upon reaching the next drilling site, the extended end of the hydraulic cylinder is extended to its maximum length. Through the tension of the spring, the rotating plate rotates in the opposite direction, causing the tops of the two square rods to simultaneously enter the groove, driving the two tilting frames to reset and rotate, thus moving the cleaning block away from the corresponding front wheel. Simultaneously, the locking frame is firmly attached to the corresponding front wheel, securing the vehicle. Combined with the buffer plate and guide groove, this facilitates drilling operations.

[0013] When using this invention, after completing one drilling operation, the line is pulled back from the well. During this process, the line is guided by a guide groove, which not only prevents it from deviating but also facilitates the continuation of drilling operations at the next well. When the drill bit is retrieved and moved to the set position, the extended end of the hydraulic cylinder is controlled to retract to its shortest length, causing the rotating plate to rotate in the forward direction. The buffer plate provides support for the drill bit, preventing it from being bumped due to uneven ground and from colliding with other hard structures, which could cause damage. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the supporting mechanism structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the load-bearing mechanism structure of the present invention; Figure 5 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the cleaning mechanism structure of the present invention.

[0016] In the diagram: 1. Line; 2. Bearing section; 3. Drill bit; 4. Bearing mechanism; 5. Front wheel; 6. Cleaning mechanism; 7. Rear wheel; 8. Car body; 9. Guide groove; 10. Groove; 11. Guide plate; 401. Pressing rod; 402. Hydraulic cylinder; 403. Buffer plate; 404. Tension spring; 405. First lever; 406. Square rod; 407. Rotating plate; 601. Rotating seat; 602. Locking frame; 603. Cleaning block; 604. Tilting frame; 605. Second lever. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-6 As shown, a flexible directional drilling tool includes a vehicle body 8, two front wheels 5 are rotatably mounted on one side of the bottom of the vehicle body 8, and a guide groove 9 is fixedly installed on the top of the vehicle body 8. A line 1 is provided in the guide groove 9, and the output end of the line 1 is electrically connected to a drill bit 3. A bearing mechanism 4 for supporting the drill bit 3 is provided between the vehicle body 8 and the guide groove 9. Two cleaning mechanisms 6 for cleaning the front wheels 5 are provided at the bottom of the vehicle body 8.

[0019] Please see Figure 3 and Figure 4 As shown, the above-mentioned bearing mechanism 4 includes a rotating plate 407 rotatably connected to the bottom of the guide groove 9 via a pin. A buffer plate 403 for placing the drill bit 3 is fixedly installed at one end of the rotating plate 407, and a first sliding groove is provided at the end of the rotating plate 407 away from the buffer plate 403.

[0020] Please see Figure 4 As shown, two square rods 406 are movably inserted into the vehicle body 8. The two square rods 406 are arranged longitudinally and are located on the front and rear sides of the rotating plate 407, respectively. A first lever 405 is fixedly installed on the upper middle part of the square rod 406 and is slidably connected to the first slide groove.

[0021] Please see Figure 3 and Figure 4 As shown, a longitudinally arranged hydraulic cylinder 402 is fixedly installed on the vehicle body 8. A pressing rod 401 is fixedly installed on the extended end of the hydraulic cylinder 402. The pressing rod 401 is slidably connected to the top of the rotating plate 407. The hydraulic cylinder 402 is located on the side of the pin shaft away from the buffer plate 403.

[0022] Please see Figure 4As shown, the end of the rotating plate 407 near the buffer plate 403 is elastically connected to the vehicle body 8 via a tension spring 404. During the forward rotation of the rotating plate 407, the first slide groove simultaneously provides a downward thrust to the two first levers 405, causing the two square rods 406 to descend simultaneously. The descent of the square rods 406, in conjunction with the second lever 605, drives the tilting frame 604 to rotate, bringing the cleaning block 603 closer to the corresponding front wheel 5. As the vehicle body 8 moves forward, the inclined surface on the cleaning block 603 scrapes away the mud from the surface of the corresponding front wheel 5, preventing a large amount of mud from adhering. This affects the efficiency of the vehicle body 8 moving normally to the next drilling site. When the next drilling site is reached, the extended end of the hydraulic cylinder 402 is extended to its maximum length. Through the tension of the tension spring 404, the rotating plate 407 rotates in the opposite direction. The tops of the two square rods 406 simultaneously enter the groove 10, driving the two tilting frames 604 to reset and rotate, so that the cleaning block 603 is away from the corresponding front wheel 5. At the same time, the locking frame 602 is in close contact with the corresponding front wheel 5, which serves to fix the vehicle body 8. In conjunction with the buffer plate 403 and the guide groove 9, it is convenient for the drill bit 3 to carry out drilling work.

[0023] Please see Figure 3 and Figure 5 As shown, the cleaning mechanism 6 mentioned above includes a rotating seat 601 fixedly connected to the bottom of the vehicle body 8. A flipping frame 604 is rotatably provided at the bottom of the rotating seat 601. A second sliding groove is provided at the end of the flipping frame 604 near the square rod 406. The bottom of one of the square rods 406 is slidably connected to the corresponding second sliding groove through a second lever 605.

[0024] Please see Figure 5 and Figure 6 As shown, a cleaning block 603 is fixedly installed at the end of the tilting frame 604 away from the second slide groove. The cleaning block 603 is located on the side of the tilting frame 604 away from the center of the vehicle body 8, and the side of the cleaning block 603 away from the tilting frame 604 has a slope for scraping off the mud on the surface of the corresponding front wheel 5. The slope is set towards the ground. Since the slope is facing the ground, the scraped mud will be scraped off to the front and rear sides of the vehicle body 8 and will not affect the travel path of the subsequent rear wheel 7.

[0025] Please see Figure 6As shown, the aforementioned tilting frame 604 is fixedly installed with a locking frame 602 for locking the corresponding front wheel 5 at the end near the cleaning block 603. The locking frame 602 is located above the corresponding cleaning block 603. After completing one drilling operation, the line 1 is pulled out of the drilling well. During this process, the line 1 is guided by the guide groove 9, which not only prevents it from deviating, but also facilitates the subsequent drilling operation. When the drill bit 3 is retracted to the set position, the extended end of the hydraulic cylinder 402 is controlled to retract to its shortest length, causing the rotating plate 407 to rotate in the forward direction. The buffer plate 403 provides support for the drill bit 3, preventing it from being bumped due to uneven ground and from colliding with other hard structures, which could cause damage.

[0026] Please see Figure 1 and Figure 2 As shown, the bottom of the guide groove 9 is provided with a groove 10, and a guide plate 11 for guiding the top of the two square rods 406 is also fixedly installed at the bottom of the guide groove 9. The position of the guide plate 11 corresponds to the position of the groove 10.

[0027] Please see Figure 1 As shown, a number of bearing sections 2 are fitted on the outer wall of the above-mentioned line 1, and the bearing sections 2 are slidably connected to the inner wall of the guide groove 9.

[0028] Please see Figure 1 As shown, two rear wheels 7 are rotatably mounted on the side of the bottom of the vehicle body 8 away from the two front wheels 5.

[0029] Working Principle: In use, after completing one drilling operation, the line 1 is pulled back from the well. During this process, the guide groove 9 guides the line 1, preventing it from deviating and facilitating subsequent drilling operations. When the drill bit 3 is retracted to the set position, the extended end of the hydraulic cylinder 402 is retracted to its shortest length, causing the rotating plate 407 to rotate forward. The buffer plate 403 provides support for the drill bit 3, preventing it from being bumped due to uneven ground and colliding with other hard structures, which could cause damage. During the forward rotation of the rotating plate 407, the first slide groove simultaneously provides downward thrust to the two first levers 405, causing the two square rods 406 to descend simultaneously. The descent of the square rods 406, in conjunction with the second lever... 605 drives the tilting frame 604 to rotate, causing the cleaning block 603 to approach the corresponding front wheel 5. During the forward movement of the vehicle body 8, the slope on the cleaning block 603 scrapes off the mud on the surface of the corresponding front wheel 5, preventing a large amount of mud from adhering and affecting the efficiency of the vehicle body 8 in moving to the next drilling site. When the next drilling site is reached, the extended end of the hydraulic cylinder 402 is extended to its maximum length. Through the tension of the tension spring 404, the rotating plate 407 rotates in the opposite direction, and the tops of the two square rods 406 simultaneously enter the groove 10, driving the two tilting frames 604 to reset and rotate, so that the cleaning block 603 moves away from the corresponding front wheel 5. At the same time, the locking frame 602 is in close contact with the corresponding front wheel 5, which serves to fix the vehicle body 8. Together with the buffer plate 403 and the guide groove 9, it facilitates the drilling work of the drill bit 3.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A flexible directional drilling tool, comprising a vehicle body (8), wherein two front wheels (5) are rotatably disposed on one side of the bottom of the vehicle body (8), and a guide groove (9) is fixedly installed on the top of the vehicle body (8), characterized in that: A line (1) is provided in the guide groove (9), and the output end of the line (1) is electrically connected to a drill bit (3). A bearing mechanism (4) for supporting the drill bit (3) is provided between the vehicle body (8) and the guide groove (9). Two cleaning mechanisms (6) for cleaning the front wheels (5) are provided at the bottom of the vehicle body (8). The bearing mechanism (4) includes a rotating plate (407) rotatably connected to the bottom of the guide groove (9) via a pin. A buffer plate (403) for placing the drill bit (3) is fixedly installed at one end of the rotating plate (407). A first sliding groove is provided at the end of the rotating plate (407) away from the buffer plate (403).

2. The flexible directional drilling tool according to claim 1, characterized in that, Two square rods (406) are movably inserted on the vehicle body (8). The two square rods (406) are located on the front and rear sides of the rotating plate (407) respectively. A first lever (405) is fixedly installed on the upper middle part of the square rod (406). The first lever (405) is slidably connected to the first slide groove.

3. A flexible directional drilling tool according to claim 2, characterized in that, A hydraulic cylinder (402) is fixedly installed on the vehicle body (8). A pressing rod (401) is fixedly installed on the extended end of the hydraulic cylinder (402). The pressing rod (401) is slidably connected to the top of the rotating plate (407). The hydraulic cylinder (402) is located on the side of the pin shaft away from the buffer plate (403).

4. A flexible directional drilling tool according to claim 3, characterized in that, The end of the rotating plate (407) near the buffer plate (403) is elastically connected to the vehicle body (8) via a tension spring (404).

5. A flexible directional drilling tool according to claim 1, characterized in that, The cleaning mechanism (6) includes a rotating seat (601) fixedly connected to the bottom of the vehicle body (8). A flipping frame (604) is rotatably provided at the bottom of the rotating seat (601). A second sliding groove is provided at the end of the flipping frame (604) near the square rod (406). The bottom of one of the square rods (406) is slidably connected to the corresponding second sliding groove through a second lever (605).

6. A flexible directional drilling tool according to claim 5, characterized in that, A cleaning block (603) is fixedly installed at the end of the tilting frame (604) away from the second slide groove. The cleaning block (603) is located on the side of the tilting frame (604) away from the center of the vehicle body (8). The side of the cleaning block (603) away from the tilting frame (604) is provided with an inclined surface for scraping off the mud on the surface of the corresponding front wheel (5). The inclined surface is set towards the ground.

7. A flexible directional drilling tool according to claim 6, characterized in that, The flipping frame (604) is fixedly installed with a locking frame (602) for locking the corresponding front wheel (5) at the end near the cleaning block (603), and the locking frame (602) is located above the corresponding cleaning block (603).

8. A flexible directional drilling tool according to claim 7, characterized in that, The bottom of the guide groove (9) is provided with a groove (10), and a guide plate (11) for guiding the top of the two square rods (406) is also fixedly installed at the bottom of the guide groove (9). The position of the guide plate (11) corresponds to the position of the groove (10).

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