Coal bed gas directional drilling well measurement and control device and method thereof

Abstract

The present application belongs to the technical field of coal seam mining, in particular to a coal seam gas directional drilling well measurement and control device and method, comprising a connecting rod, the surface of the connecting rod is fixedly connected from bottom to top with a geological detection sensor, a motion sensor, a central processor, a methane sensor and a data transmission module, water is injected into the water inlet pipe and pumped out, and cooperates with the return spring, so that the telescopic pipe moves downward or upward in the water inlet pipe, and then the sponge ring reciprocates on the connecting rod, so as to clean the geological detection sensor, the fluxgate sensor, the motion sensor, the central processor, the methane sensor and the data transmission module multiple times, reduce the amount of foreign matter adhered thereon, and then the detection accuracy can be improved, so that in the process of drilling and coal mining, the core detection function is not easily caused by a large amount of foreign matter adhered on the measurement and control sensor mechanism, and the problem of motion control precision decline is caused, and the smooth progress of drilling and coal mining work is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal seam mining, in particular to a coal seam gas directional drilling measurement and control device and method. BACKGROUND

[0002] Coal seam is a layered solid combustible mineral produced by the transformation of ancient plant remains through long-term biochemical and geological processes. The significance and role of coal seam mining are as follows: energy supply core - coal accounts for about 56% of China's energy consumption, serving as the basic fuel in the fields of power generation, steel smelting and building material production. It ensures stable energy supply at relatively low cost, has economic and social value, increases local fiscal revenue, drives the development of pipeline network construction, gas storage facilities and other industrial chains, and promotes safety and environmental transformation. Extracting coal seam gas can reduce the risk of mine explosion.

[0003] During coal seam drilling, the coal seam gas directional drilling measurement and control device can detect geological information in real time and intelligently control the drilling direction to ensure that the well trajectory accurately passes through the coal seam. However, the existing coal seam gas directional drilling measurement and control device has the problem that foreign matter such as mud and debris is easily adhered to the surface of the measurement and control sensor during drilling, which can cause the core detection function to fail and the motion control accuracy to decrease.

[0004] Therefore, the present application provides a coal seam gas directional drilling measurement and control device and method. SUMMARY

[0005] To make up for the shortcomings of the prior art and solve at least one technical problem raised in the background art.

[0006] The technical solution adopted by the present application to solve its technical problems is as follows: the coal seam gas directional drilling measurement and control device comprises a connecting rod, a geological detection sensor, a motion sensor, a central processor, a methane sensor and a data transmission module are fixedly connected to the surface of the connecting rod from bottom to top;

[0007] A magnetic flux gate sensor is fixedly connected inside the connecting rod, a drill bit is fixedly connected to the bottom end of the connecting rod, and a hydraulic mechanism is fixedly connected to the top end of the connecting rod;

[0008] A pair of symmetrically distributed water inlet pipes are fixedly connected to the surface of the connecting rod, a pair of return springs are fixedly connected to the inner top wall of the water inlet pipe, the bottom end of the return spring is fixedly connected to an extension tube, the top end of the water inlet pipe is fixedly connected to a water injection pipe, and the surface of the extension tube is tightly fitted with the inner wall of the water inlet pipe;

[0009] The bottom end of the extension tube is fixedly connected to a mounting ring, a pair of elastic rings are arranged inside the mounting ring, and a sponge ring is fixedly connected to the inner wall of each elastic ring.

[0010] Preferably, a pair of reinforcing grooves are symmetrically arranged on the inner wall of the mounting ring, mounting springs are fixedly connected to the inner side walls of the reinforcing grooves, and limit blocks are fixedly connected to the side ends of the mounting springs.

[0011] Preferably, an insertion slot is arranged on the side of the limit block close to the mounting spring, a support rod is movably inserted into the insertion slot, and the end of the support rod away from the limit block penetrates through the mounting spring and is fixedly connected to the inner side wall of the reinforcing groove.

[0012] Preferably, the inner wall of the mounting spring is attached to the surface of the support rod, and the outer diameter of the mounting spring is greater than the diameter of the insertion slot.

[0013] Preferably, a group of connecting pipes are fixedly connected to the bottom end of the mounting ring, the bottom ends of a group of the connecting pipes are fixedly connected to the same cleaning ring, the inside of the cleaning ring is a hollow structure, spray holes are arranged on the inner wall of the cleaning ring, a water outlet is arranged at the bottom end of the telescopic pipe, a pair of water inlets opposite to the water outlet of the telescopic pipe are arranged at the top end of the cleaning ring, and a gap exists between the inner wall of the cleaning ring and the surface of the connecting rod.

[0014] Preferably, in the initial state, the cleaning ring is located above the methane sensor and the data transmission module.

[0015] Preferably, a pair of telescopic blocks are sleeved on the surface of the connecting rod, fixed rods are fixedly connected to the inner walls of the telescopic blocks, reinforcing springs are fixedly connected to the ends of the fixed rods away from the telescopic blocks, a pair of symmetrically distributed circular holes are arranged on the surface of the connecting rod, the ends of the reinforcing springs away from the fixed rods are fixedly connected to the inner walls of the circular holes, inclined slots are arranged at the top of the telescopic blocks, a pair of symmetrically distributed tapered plates are fixedly connected to the bottom of the cleaning ring, the tapered plates are located directly above the circular holes, the width of the inclined slot is greater than the width of the tapered plate, and the bottom of the telescopic block abuts against the top of the drill bit.

[0016] Preferably, the surfaces of the reinforcing springs and the fixed rods are in contact with the inner walls of the circular holes, and a gap exists between the end of the fixed rod away from the telescopic block and the inner side wall of the circular hole.

[0017] Preferably, a magnetic coating one is coated on the side of a pair of the tapered plates close to each other, and a magnetic coating two magnetically repulsive to the magnetic coating one is coated on the inner walls of the inclined slot and the telescopic block.

[0018] A coalbed methane directional drilling measurement and control method, which adopts the coalbed methane directional drilling measurement and control device, and is characterized by comprising the following steps:

[0019] S1: borehole detection is performed by using a geological detection sensor, a motion sensor, a central processor, a methane sensor, a data transmission module, and a fluxgate sensor;

[0020] S2: water is injected into the water injection pipe, so that the telescopic pipe pushes the sponge ring to move downward to wipe and clean the surface of the connecting rod;

[0021] S3: water is sprayed on the surface of the connecting rod by using the cleaning ring to soften the dirt;

[0022] S4: the telescopic block is pushed to move away from the connecting rod to scrape the dirt on the top of the drill bit.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. The coalbed methane directional drilling measurement and control device provided by the present application, when in use, injects water into the water inlet pipe and cooperates with the return spring to make the telescopic pipe move downward or upward in the water inlet pipe, thereby making the sponge ring reciprocate on the connecting rod to wipe and clean the geological detection sensor, the fluxgate sensor, the motion sensor, the central processor, the methane sensor, and the data transmission module multiple times, reducing the amount of foreign matter adhered thereto, thereby improving the detection accuracy, so that the core detection function is not easily lost and the motion control accuracy is not easily reduced due to a large amount of foreign matter adhering to the measurement and control sensor mechanism during the drilling and coal mining process, and the drilling and coal mining work is ensured to proceed smoothly.

[0025] 2. The coalbed methane directional drilling measurement and control device provided by the present application, when in use, during the process of the cleaning ring being pushed downward by the mounting ring, the conical plate will move downward together with the cleaning ring, and as the conical plate continuously moves downward, the lower end thereof will be inserted into the inclined groove and gradually move toward the pair of telescopic blocks, thereby pushing the pair of telescopic blocks to move together with the reinforcing spring on the drill bit, and then making the pair of telescopic blocks gradually move away from each other, using the telescopic blocks to scrape and treat the foreign matter adhered to the top of the drill bit to improve the cleanliness and ensure the smooth progress of the drilling work, and when the conical plate and the telescopic blocks are separated, the telescopic blocks will be pulled back to the original position under the action of the pulling force of the reinforcing spring. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is a perspective view of the present application;

[0028] Figure 2 is a perspective view of the mounting ring in the present application;

[0029] Figure 3 is an enlarged view of position A in the present application;

[0030] Figure 4is an enlarged view of B in the application;

[0031] Figure 5 is a perspective view of the telescopic pipe in the application;

[0032] Figure 6 is a perspective view of the cleaning ring in the application;

[0033] Figure 7 is a perspective view of the telescopic block in the application;

[0034] Figure 8 is a flow chart of the method of the application.

[0035] In the figure: 1, connecting rod; 2, geological detection sensor; 3, motion sensor; 4, central processor; 5, methane sensor; 6, data transmission module; 7, drill bit; 8, water inlet pipe; 9, reset spring; 10, telescopic pipe; 11, mounting ring; 12, elastic ring; 13, sponge ring; 14, reinforcing groove; 15, mounting spring; 16, limiting block; 17, limiting groove; 18, support rod; 19, connecting pipe; 20, cleaning ring; 21, spray hole; 22, water inlet; 23, telescopic block; 24, reinforcing spring; 25, round hole; 26, inclined groove; 27, conical plate; 28, fixed rod; 29, magnetic coating I; 30, magnetic coating II; 31, hydraulic mechanism; 32, water injection pipe. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, purposes and effects achieved by the application easy to understand, the application will be further described below in conjunction with specific embodiments.

[0037] Embodiment one: as Figures 1-2 and Figure 5 shown, the coalbed methane directional drilling measurement and control device and method of the embodiment of the application comprises a connecting rod 1, the surface of the connecting rod 1 is fixedly connected from bottom to top with a geological detection sensor 2, a motion sensor 3, a central processor 4, a methane sensor 5 and a data transmission module 6, the geological parameters and attitude near the drill bit 7 can be collected in real time by using the geological detection sensor 2 and the motion sensor 3, the central processor 4 controls the near-drill-bit 7 guiding mechanism through hydraulic / electric signals, the methane sensor 5 is used to monitor the downhole safety environment, and the data transmission module 6 (such as a low-frequency electromagnetic wave transmitter) communicates with the ground system in real time;

[0038] The inside of the connecting rod 1 is fixedly connected with a fluxgate sensor, the space position of the drill bit 7 is positioned by a low-frequency alternating magnetic field, the bottom end of the connecting rod 1 is fixedly connected with the drill bit 7, and the top end of the connecting rod 1 is fixedly connected with a hydraulic mechanism 31;

[0039] The surface of the connecting rod 1 is fixedly connected with a pair of symmetrically distributed water inlet pipes 8, the inner top wall of the water inlet pipe 8 is fixedly connected with a pair of return springs 9, the bottom end of the return spring 9 is fixedly connected with an expansion pipe 10, the top end of the water inlet pipe 8 is fixedly connected with a water injection pipe 32, and the surface of the expansion pipe 10 is tightly combined with the inner wall of the water inlet pipe 8.

[0040] The bottom end of the expansion pipe 10 is fixedly connected with a mounting ring 11, the inside of the mounting ring 11 is provided with a pair of elastic rings 12, the inner wall of the pair of elastic rings 12 is fixedly connected with a sponge ring 13, and the inner wall of the sponge ring 13 is combined with the surface of the connecting rod 1.

[0041] In the prior art, when drilling coal, the coal bed gas directional drilling measurement and control device can detect geological information in real time and intelligently control the drilling direction to ensure that the well trajectory accurately passes through the coal bed. In the drilling process, the surface of the existing coal bed gas directional drilling measurement and control device is prone to adhere to mud and debris and other foreign matters, which can easily cause the core detection function to fail and the motion control accuracy to decrease.

[0042] In use, in the drilling process, the geological detection sensor 2, the fluxgate sensor, the motion sensor 3, the central processor 4, the methane sensor 5 and the data transmission module 6 are used to realize the real-time collection of geological parameters and attitudes, the positioning of the drill bit 7 spatial position through the low-frequency alternating magnetic field, the adjustment of the drill bit 7 deflection angle after receiving the instruction, the monitoring of the downhole safety environment and the real-time communication with the ground system.

[0043] In the drilling process, water can be injected into the water injection pipe 32, so that the water enters the inside of the water inlet pipe 8, and then the inside pressure of the water inlet pipe 8 increases, and under the pushing of the water flow, the expansion pipe 10 pulls the return spring 9 to move downward.

[0044] When the expansion pipe 10 moves downward, it will drive the mounting ring 11 and all the mechanisms thereon to move upward and downward on the connecting rod 1, so that the sponge ring 13 moves upward and downward on the connecting rod 1 to wipe and clean the measurement and control sensor mechanism, so as to improve the cleanliness of the geological detection sensor 2, the motion sensor 3, the central processor 4, the methane sensor 5 and the data transmission module 6, and then improve the detection accuracy, and then complete the cleaning of the measurement and control sensor mechanism once.

[0045] When the sponge ring 13 moves downward and wipes and cleans the geological detection sensor 2, the water injection pipe 32 needs to be pumped out, so that the water in the water inlet pipe 8 moves out, and then under the elastic force of the return spring 9, the expansion pipe 10 and all the mechanisms thereon are pulled to move upward on the connecting rod 1, so as to clean the measurement and control sensor mechanism again, and then personnel can move the sponge ring 13 reciprocally on the connecting rod 1 to clean the measurement and control sensor mechanism multiple times.

[0046] In summary, the present application in use, by injecting water into the water inlet pipe 8 and pumping water and reset spring 9, so that the telescopic tube 10 in the water inlet pipe 8 down or up, in turn, so that the sponge ring 13 on the connecting rod 1 reciprocating movement, to geological survey sensor 2, fluxgate sensor, motion sensor 3, central processor 4, methane sensor 5 and data transmission module 6 multiple wipe clean, reduce the amount of foreign matter adhering to it, in turn, can improve its detection accuracy, so that in the process of drilling coal is not easy to cause a large number of foreign matter adhering to the measurement and control sensor mechanism, resulting in core detection function failure and motion control precision decline and other problems, ensure the smooth progress of drilling coal work.

[0047] As shown in Figures 3-4 The inner wall of the mounting ring 11 is provided with a pair of symmetrically distributed reinforcing grooves 14, the inner side wall of the reinforcing groove 14 is fixedly connected with the mounting spring 15, the side end of the mounting spring 15 is fixedly connected with the limiting block 16, a pair of the elastic ring 12 is provided with a limiting groove 17 on the side away from each other, and the limiting block 16 is movably inserted into the limiting groove 17.

[0048] When the sponge ring 13 is replaced, the limiting block 16 can be moved to the outside of the limiting groove 17 until the side of the limiting block 16 is separated from the limiting groove 17, so that the limiting effect of the limiting block 16 on the elastic ring 12 is removed, then the elastic ring 12 is bent towards the connecting rod 1, until the elastic ring 12 is removed from the lower end of the water inlet pipe 8, then the elastic ring 12 is moved upwards and taken out from the mounting ring 11, and then the sponge ring 13 can be replaced.

[0049] As shown in Figure 3 The side of the limiting block 16 close to the mounting spring 15 is provided with a plug-in groove, the plug-in groove is movably inserted with a supporting rod 18, and the end of the supporting rod 18 away from the limiting block 16 penetrates through the mounting spring 15 and is fixedly connected with the inner side wall of the reinforcing groove 14.

[0050] During the movement of the limiting block 16 away from the limiting groove 17, the depth of the end of the supporting rod 18 inserted into the limiting block 16 will increase continuously, and the stability of the limiting block 16 and the mounting spring 15 during movement can be improved by using the supporting rod 18.

[0051] As shown in Figure 3 The inner wall of the mounting spring 15 is in contact with the surface of the supporting rod 18, and the outer diameter of the mounting spring 15 is greater than the diameter of the plug-in groove, so that the limiting block 16 can extrude the mounting spring 15.

[0052] As shown in Figure 6As shown, the bottom end of the mounting ring 11 is fixedly connected to a set of connecting pipes 19, and the bottom end of the set of connecting pipes 19 is fixedly connected to the same cleaning ring 20. The cleaning ring 20 has a hollow internal structure, and spray holes 21 are opened on the inner wall of the cleaning ring 20. The bottom end of the telescopic pipe 10 is provided with a water outlet, and the top end of the cleaning ring 20 is provided with a pair of water inlets 22 opposite to the water outlet of the telescopic pipe 10. There is a gap between the inner wall of the cleaning ring 20 and the surface of the connecting rod 1.

[0053] The top of the telescopic tube 10 is provided with a docking hole. When water is injected into the water inlet pipe 8, some water will pass through the docking hole into the telescopic tube 10. Then the water will pass through the outlet at the bottom of the water inlet pipe 8 and the connecting pipe 19, and enter the cleaning ring 20. Finally, the water will be sprayed onto the connecting rod 1 through the spray hole 21 to soften the foreign matter adhering to the connecting rod 1 and the measurement and control sensor mechanism, thereby optimizing the cleaning effect of the connecting rod 1 and the measurement and control sensor mechanism.

[0054] After water is sprayed onto the connecting rod 1, the water will flow down the connecting rod 1 onto the drill bit 7, thereby cooling the drill bit 7.

[0055] like Figure 1 As shown, in the initial state, the cleaning ring 20 is located above the methane sensor 5 and the data transmission module 6.

[0056] Example 2: Figures 6-7 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a pair of telescopic blocks 23 are sleeved on the surface of the connecting rod 1, a fixing rod 28 is fixedly connected to the inner wall of the telescopic block 23, a reinforcing spring 24 is fixedly connected to the end of the fixing rod 28 away from the telescopic block 23, a pair of symmetrically distributed circular holes 25 are opened on the surface of the connecting rod 1, the end of the reinforcing spring 24 away from the fixing rod 28 is fixedly connected to the inner wall of the circular hole 25, a sloping groove 26 is opened on the top of the telescopic block 23, a pair of symmetrically distributed conical plates 27 are fixedly connected to the bottom of the cleaning ring 20, the conical plates 27 are located directly above the circular holes 25, the width of the sloping groove 26 is greater than the width of the conical plate 27, and the bottom of the telescopic block 23 abuts against the top of the drill bit 7.

[0057] The present application is used, in the process of moving down under the pushing of the mounting ring 11, the tapered plate 27 will move down with the cleaning ring 20, as the tapered plate 27 continues to move down, its lower end will be inserted into the chute 26, and gradually move to the pair of telescopic blocks 23, and then push the pair of telescopic blocks 23 to move together with the reinforcing spring 24 on the drill bit 7, so that the pair of telescopic blocks 23 gradually move away from each other, and the foreign matter adhered to the top of the drill bit 7 is scraped by the telescopic block 23, improving the cleanliness and ensuring the smooth progress of the drilling work, when the tapered plate 27 is separated from the telescopic block 23, the telescopic block 23 will be reset under the action of the pulling force of the reinforcing spring 24.

[0058] As shown in Figure 7 , the surface of the reinforcing spring 24 and the fixed rod 28 is in contact with the inner wall of the circular hole 25, and the end of the fixed rod 28 away from the telescopic block 23 has a gap with the inner wall of the circular hole 25.

[0059] As shown in Figures 6-7 , one side of the pair of tapered plates 27 close to each other is coated with a magnetic coating 1 29, and the inner wall of the chute 26 and the telescopic block 23 is coated with a magnetic coating 2 30 which is repulsive to the magnetic coating 1 29;

[0060] In the process of inserting the tapered plate 27 into the chute 26, the distance between the telescopic block 23 and the tapered plate 27 will rapidly increase under the repulsion of the magnetic coating 1 29 and the magnetic coating 2 30, and the range of movement of the telescopic block 23 will be expanded.

[0061] As shown in Figure 8 , a coal bed methane directional drilling measurement and control method, the method uses the above coal bed methane directional drilling measurement and control device, characterized in that it comprises the following steps:

[0062] S1: drilling detection is performed by using the geological detection sensor 2, the motion sensor 3, the central processor 4, the methane sensor 5, the data transmission module 6 and the magnetic flux gate sensor;

[0063] S2: water is injected into the water injection pipe 14, so that the telescopic pipe 10 pushes the sponge ring 13 to move down to wipe and clean the surface of the connecting rod 1;

[0064] S3: the connecting rod 1 is sprayed with water by the cleaning ring 20 to soften the dirt;

[0065] S4: the telescopic block 23 is pushed to move away from the connecting rod 1 to scrape the dirt on the top of the drill bit 7.

[0066] The above, front, back, left, right, up and down are based on the Figure 1 in the drawings of the specification, according to the standard of the human observation angle, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0067] In the description of the application, it is to be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the application.

[0068] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A coalbed methane directional drilling monitoring and control device, comprising a connecting rod (1), characterized in that: The surface of the connecting rod (1) is fixedly connected from bottom to top to a geological detection sensor (2), a motion sensor (3), a central processor (4), a methane sensor (5), and a data transmission module (6). A fluxgate sensor is fixedly connected inside the connecting rod (1), a drill bit (7) is fixedly connected to the bottom end of the connecting rod (1), and a hydraulic mechanism (31) is fixedly connected to the top end of the connecting rod (1). A pair of symmetrically distributed water inlet pipes (8) are fixedly connected to the surface of the connecting rod (1). A pair of return springs (9) are fixedly connected to the inner top wall of the water inlet pipes (8). A telescopic pipe (10) is fixedly connected to the bottom end of the return springs (9). A water injection pipe (32) is fixedly connected to the top end of the water inlet pipes (8). The surface of the telescopic pipe (10) is tightly fitted to the inner wall of the water inlet pipes (8). The bottom end of the telescopic tube (10) is fixedly connected to an installation ring (11), and a pair of elastic rings (12) are provided inside the installation ring (11). A sponge ring (13) is fixedly connected to the inner wall of each pair of elastic rings (12). The inner wall of the mounting ring (11) is provided with a pair of symmetrically distributed reinforcing grooves (14). The inner side wall of the reinforcing groove (14) is fixedly connected with a mounting spring (15). The side end of the mounting spring (15) is fixedly connected with a limiting block (16). The two elastic rings (12) are provided with limiting grooves (17) that are movably inserted into the limiting block (16) on the side away from each other. The bottom end of the mounting ring (11) is fixedly connected to a set of connecting pipes (19), and the bottom end of the set of connecting pipes (19) is fixedly connected to the same cleaning ring (20). The cleaning ring (20) has a hollow structure inside. Spray holes (21) are opened on the inner wall of the cleaning ring (20). The bottom end of the telescopic pipe (10) is opened with a water outlet. The top end of the cleaning ring (20) is opened with a pair of water inlets (22) opposite to the water outlet of the telescopic pipe (10). There is a gap between the inner wall of the cleaning ring (20) and the surface of the connecting rod (1).

2. The coalbed methane directional drilling monitoring and control device according to claim 1, characterized in that: The limiting block (16) has a insertion groove on the side near the mounting spring (15), and a support rod (18) is movably inserted into the insertion groove. The end of the support rod (18) away from the limiting block (16) passes through the mounting spring (15) and is fixedly connected to the inner wall of the reinforcing groove (14).

3. The coalbed methane directional drilling monitoring and control device according to claim 1, characterized in that: The inner wall of the mounting spring (15) is in contact with the surface of the support rod (18), and the outer diameter of the mounting spring (15) is larger than the diameter of the insertion groove.

4. The coalbed methane directional drilling monitoring and control device according to claim 1, characterized in that: In the initial state, the cleaning ring (20) is located above the methane sensor (5) and the data transmission module (6).

5. The coalbed methane directional drilling monitoring and control device according to claim 1, characterized in that: A pair of telescopic blocks (23) are fitted on the surface of the connecting rod (1). A fixed rod (28) is fixedly connected to the inner wall of the telescopic block (23). A reinforcing spring (24) is fixedly connected to the end of the fixed rod (28) away from the telescopic block (23). A pair of symmetrically distributed circular holes (25) are opened on the surface of the connecting rod (1). The end of the reinforcing spring (24) away from the fixed rod (28) is fixedly connected to the inner wall of the circular hole (25). A sloping groove (26) is opened on the top of the telescopic block (23). A pair of symmetrically distributed cone plates (27) are fixedly connected to the bottom of the cleaning ring (20). The cone plates (27) are located directly above the circular hole (25). The width of the sloping groove (26) is greater than the width of the cone plate (27). The bottom of the telescopic block (23) abuts against the top of the drill bit (7).

6. The coalbed methane directional drilling monitoring and control device according to claim 5, characterized in that: The surfaces of the reinforcing spring (24) and the fixing rod (28) are in contact with the inner wall of the round hole (25), and there is a gap between the end of the fixing rod (28) away from the telescopic block (23) and the inner wall of the round hole (25).

7. The coalbed methane directional drilling monitoring and control device according to claim 5, characterized in that: The two conical plates (27) are coated with a magnetic coating one (29) on the side that is close to each other, and the inner walls of the inclined groove (26) and the telescopic block (23) are coated with a magnetic coating two (30) that is magnetically repelled by the magnetic coating one (29).

8. A method for monitoring and controlling coalbed methane directional drilling, wherein the method employs the coalbed methane directional drilling monitoring and control device as described in claim 7, characterized in that: Includes the following steps: S1: Drilling detection is performed using a geological exploration sensor (2), a motion sensor (3), a central processor (4), a methane sensor (5), a data transmission module (6), and a fluxgate sensor; S2: Inject water into the water pipe (32) to push the sponge ring (13) down through the telescopic pipe (10) to wipe and clean the surface of the connecting rod (1); S3: Use the cleaning ring (20) to spray water on the surface of the connecting rod (1) to soften the dirt; S4: Push the telescopic block (23) to move away from the connecting rod (1) to scrape the dirt off the top of the drill bit (7).

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