A high-precision drilling equipment for blind hole of a perforating gun

Abstract

This invention relates to the field of drilling equipment technology, specifically a high-precision drilling device for blind holes with a perforating gun. It includes a base, with a support fixedly connected to the upper end of the base. A drilling mechanism is located at one end of the support, including a drill bit. A limiting mechanism is located at the lower end of the drill bit, comprising a cover. A clamping block is located inside the cover, and a closing mechanism is located at one end of the cover. The closing mechanism includes a second arc-shaped block, and a cleaning mechanism, including a rubber block, is located at one end of the second arc-shaped block. By configuring the drill bit to first drive the clamping block to elastically clamp the perforating gun during descent, vibration during processing is avoided. Simultaneously, the cover forms a closed space to prevent debris from splashing. The circular tube formed by the two second arc-shaped blocks can accurately absorb and clean debris from the blind hole and the drill bit. Furthermore, the circular tube can buffer the impact force of the motor's descent and act as a limiter to ensure consistent blind hole processing depth each time.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically a high-precision drilling device for blind holes using a perforating gun. Background Technology

[0002] The high-precision drilling equipment for blind holes in perforating guns is a specialized CNC machining equipment for manufacturing perforating guns for oil and gas extraction. It is specifically designed for high-precision and high-consistency machining of blind holes in the perforating gun barrel. It can accurately control the depth, diameter, angle and position accuracy of the blind hole, ensuring uniform wall thickness and structural strength of the gun body, and meeting the requirements of high-density and multi-directional hole layout. Its function is to improve the processing quality and efficiency of perforating guns, optimize the perforation explosive height and focused jet performance, and improve the perforation penetration depth and recovery rate of oil and gas wells. It is the core equipment for the large-scale and standardized production of high-end perforating equipment.

[0003] Existing high-precision blind hole drilling equipment using perforating guns has many shortcomings. During the drilling process, the perforating gun is prone to vibration due to the impact force of the drill bit. This vibration greatly affects the drilling accuracy, leading to problems such as positional deviation and inconsistent depth of the blind hole. This, in turn, reduces the quality of the perforating gun, affects its performance in subsequent use, and may even cause safety accidents. At the same time, a large amount of debris is generated during the drilling process. This debris not only flies everywhere, contaminating the processing environment, but may also remain in the blind hole of the perforating gun and on the drill bit, making cleaning difficult. The residual debris affects the assembly accuracy and service life of the perforating gun, increasing subsequent maintenance costs. In addition, existing drilling equipment also has defects in drilling depth control, making it difficult to ensure that the drilling depth is accurate and consistent every time. This results in inconsistent quality of the perforating guns, which cannot meet high-standard usage requirements. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a high-precision drilling device for blind holes with a perforating gun.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a high-precision drilling device for blind holes of a perforating gun, including a base, a bracket fixedly connected to the upper end of the base, and a drilling mechanism for drilling holes in a perforating gun provided at one end of the bracket, the drilling mechanism including a drill bit; The lower end of the drill bit is provided with a limiting mechanism for further fixing the perforating gun. The limiting mechanism includes a cover, and a clamping block is provided inside the cover. One end of the cover is provided with a sealing mechanism to seal the drilling part of the perforating gun, and the sealing mechanism includes a second arc-shaped block; One end of the second arc-shaped block is provided with a cleaning mechanism for cleaning up the debris generated during drilling, and the cleaning mechanism includes a rubber block.

[0006] Preferably, the bracket provides support for the drill bit, allowing the drill bit to drill holes stably.

[0007] Preferably, the drilling mechanism includes a slide rail, one end of which is fixedly connected to the bracket, the lower end of which is fixedly connected to the non-output end of a hydraulic cylinder, the output end of which is fixedly connected to a motor, the motor being slidably connected to the slide rail, and the output end of the motor being fixedly connected to the drill bit.

[0008] Preferably, the drilling mechanism further includes a rotating pin, and the surface of the motor is rotatably connected to the rotating pin.

[0009] Preferably, the limiting mechanism includes a first sliding plate, which is slidably connected to the base. A first guide groove is provided inside the first sliding plate. The lower end of the first sliding plate is fixedly connected to a second sliding plate, which is slidably connected to the base. A second guide groove is provided inside the second sliding plate. A rotating pin is slidably connected inside the second guide groove. The upper end of the rotating pin is rotatably connected to the cover.

[0010] Preferably, the limiting mechanism further includes a sleeve, and the sleeve is fixedly connected inside the cover. The inside of the sleeve is elastically connected to the clamping block by a spring.

[0011] Preferably, the sealing mechanism includes a first arc-shaped block, the lower end of which is fixedly connected to the cover, the interior of the first arc-shaped block is slidably connected to a second arc-shaped block, the interior of the second arc-shaped block has an opening, and a vacuum tube is fixedly connected to the interior of the first arc-shaped block.

[0012] Preferably, the cleaning mechanism includes a connecting block, the upper end of which is fixedly connected to the second arc-shaped block, one end of which is fixedly connected to the rubber block, the rubber block is slidably connected to the suction pipe, and the rubber block is elastically connected to the cover via a spring.

[0013] The beneficial effects of this invention are: (1) The high-precision drilling equipment for blind holes of the perforating gun described in this invention, by setting the drill bit to descend while first driving two V-shaped clamping blocks to elastically clamp the perforating gun, the rubber wrapped around the outside and the large elastic spring inside can buffer the force during processing. The V-shaped design can adapt to different pipe diameters, effectively avoid the vibration of the perforating gun during drilling, ensure the precise operation of the drill bit, greatly improve the processing accuracy of blind holes of the perforating gun, make the product quality better, reduce the product defects caused by processing deviations, and improve the overall production efficiency.

[0014] (2) The high-precision drilling equipment for blind holes of perforating guns described in this invention has two covers that fit together to form a closed space, and two second arc blocks that form a circular tube that fits against the drilling point of the perforating gun. The double protection effectively prevents debris from splashing during drilling and ensures a clean processing environment. At the same time, the dust suction pipe, with the help of the two second arc blocks forming a circular tube, generates negative pressure suction after the rubber blocks move away, accurately adsorbing and cleaning debris from the blind holes of the perforating gun and the drill bit, avoiding debris residue from affecting the processing quality, reducing subsequent cleaning processes, and improving processing efficiency.

[0015] (3) The high-precision drilling equipment for blind holes of the perforating gun described in this invention has a circular tube composed of two second arc blocks that can buffer the impact force when the motor descends. Its descent compresses the spring in the inner casing to protect the equipment components. Moreover, the convex ring at the upper end of the second arc block cooperates with the upper end of the first arc block to accurately limit the processing depth of the blind hole of the perforating gun, ensuring that the processing depth is consistent each time, making the product specifications uniform, improving the stability of product quality, and enhancing the competitiveness of the product in the market. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the base and the support. Figure 3 This is a schematic diagram of the connection structure between the second sliding plate and the base; Figure 4 This is a schematic diagram of the connection structure between the slide rail and the hydraulic cylinder; Figure 5 This is a schematic diagram of the connection structure between the first sliding plate and the base; Figure 6 This is a schematic diagram of the second guide groove structure; Figure 7 This is a schematic diagram of the connection structure between the cover and the sleeve; Figure 8 This is a schematic diagram of the connection structure between the first arc-shaped block and the second arc-shaped block; Figure 9 This is a schematic diagram of the connection structure between the connecting block and the rubber block.

[0018] In the diagram: 100, base; 200, bracket; 300, drilling mechanism; 301, slide rail; 302, hydraulic cylinder; 303, electric motor; 304, drill bit; 305, rotating pin; 400, limiting mechanism; 401, first sliding plate; 4011, first guide groove; 402, second sliding plate; 4021, second guide groove; 403, rotating pin; 404, cover; 405, sleeve; 406, clamping block; 500, sealing mechanism; 501, first arc-shaped block; 502, second arc-shaped block; 503, suction pipe; 600, cleaning mechanism; 601, connecting block; 602, rubber block. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-9 As shown, the high-precision drilling equipment for blind holes of perforating guns according to the present invention includes a base 100, a bracket 200 fixedly connected to the upper end of the base 100, and a drilling mechanism 300 for drilling perforating guns is provided at one end of the bracket 200. The drilling mechanism 300 includes a drill bit 304. Specifically, the lower end of the drill bit 304 is provided with a limiting mechanism 400 for further fixing the perforating gun. The limiting mechanism 400 includes a cover 404, and a clamping block 406 is provided inside the cover 404. One end of the cover 404 is provided with a sealing mechanism 500 for sealing the drilling part of the perforating gun, and the sealing mechanism 500 includes a second arc-shaped block 502. One end of the second arc-shaped block 502 is provided with a cleaning mechanism 600 for cleaning up the debris generated during drilling. The cleaning mechanism 600 includes a rubber block 602.

[0021] The bracket 200 provides support for the drill bit 304, allowing the drill bit 304 to drill holes stably; the perforating gun is held by an external rotating clamp, and the part of the perforating gun that needs to be drilled passes through the middle of the two covers 404. The rotating clamp holds one end of the perforating gun, and the rotating clamp can also rotate the perforating gun after drilling.

[0022] Furthermore, the drilling mechanism 300 includes a slide rail 301, one end of which is fixedly connected to the bracket 200. The lower end of the slide rail 301 is fixedly connected to the non-output end of a hydraulic cylinder 302. The output end of the hydraulic cylinder 302 is fixedly connected to a motor 303. The motor 303 is slidably connected to the slide rail 301. The output end of the motor 303 is fixedly connected to the drill bit 304. A rotating pin 305 is rotatably connected to the surface of the motor 303. When drilling is required on the perforating gun, the hydraulic cylinder 302 is activated to move downward. The downward movement of the hydraulic cylinder 302 will drive the motor 303 to move downward. The motor 303 slides on the slide rail 301. The downward movement of the motor 303 will drive the drill bit 304 to move downward. The downward movement of the drill bit 304 will drill the perforating gun.

[0023] Specifically, the limiting mechanism 400 includes a first sliding plate 401, which is slidably connected to the base 100. A first guide groove 4011 is formed inside the first sliding plate 401. A second sliding plate 402 is fixedly connected to the lower end of the first sliding plate 401 and is also slidably connected to the base 100. A second guide groove 4021 is formed inside the second sliding plate 402. A rotating pin 403 is slidably connected inside the second guide groove 4021. The upper end of the rotating pin 403 is rotatably connected to the cover 404. A sleeve 405 is fixedly connected inside the cover 404, and the sleeve 405 is elastically connected to the clamping block 406 via a spring. When the motor 303 moves downwards, it drives the rotating pin 305 to move downwards. The rotating pin 305 slides within the first guide groove 4011. The downward movement of the rotating pin 305 causes the first sliding plate 401 to move to one end. This movement of the first sliding plate 401 causes the second sliding plate 402 to move to one end. The second sliding plate 402 then causes the second guide groove 4021 to move to one end. The second guide groove 4021 is bent. This movement of the second guide groove 4021 causes the two rotating pins 403 to move closer together. This movement of the two rotating pins 403 causes the two covers 404 to move closer together. This movement of the two covers 404 causes the two clamping blocks 406 to first contact the perforating gun. The outer surface of the clamping blocks 406 is covered with rubber. When the clamping blocks 406 contact the perforating gun, they compress the spring inside the sleeve 405. Under the action of the spring, the two clamping blocks 406 elastically clamp the perforating gun, preventing vibration of the perforating gun during drilling from affecting the machining accuracy.

[0024] Specifically, the sealing mechanism 500 includes a first arc-shaped block 501, the lower end of which is fixedly connected to the cover 404. The interior of the first arc-shaped block 501 is slidably connected to the second arc-shaped block 502. An opening is provided inside the second arc-shaped block 502. A vacuum tube 503 is fixedly connected inside the first arc-shaped block 501. When the two covers 404 move closer to each other, they also cause the two first arc-shaped blocks 501 to move closer to each other. When the two first arc-shaped blocks 501 move closer to each other, they cause the two second arc-shaped blocks 502 to move closer to each other. The two second arc-shaped blocks 502 move closer to each other to form a complete circular tube. A rubber pad is provided at the lower end of the motor 303. The lower end of the motor 303 is tightly attached to the upper end of the two second arc-shaped blocks 502. The motor 303 seals the upper end of the circular tube formed by the two second arc-shaped blocks 502.

[0025] It should be noted that when the motor 303 moves downward, it will drive the second arc-shaped block 502 to move downward, and the second arc-shaped block 502 will fit into the drill hole of the perforating gun.

[0026] It is worth mentioning that the cleaning mechanism 600 includes a connecting block 601. The upper end of the connecting block 601 is fixedly connected to the second arc-shaped block 502, and one end of the connecting block 601 is fixedly connected to the rubber block 602. The rubber block 602 is slidably connected to the suction pipe 503, and the rubber block 602 is elastically connected to the cover 404 by a spring. When the second arc-shaped block 502 moves downward, it will drive the connecting block 601 to move downward. When the connecting block 601 moves downward, it will drive the rubber block 602 to move downward. When the rubber block 602 moves downward, it will compress the spring inside the cover 404. When the rubber block 602 moves downward, it will move away from the suction pipe 503. After the rubber block 602 moves away from the suction pipe 503, the negative pressure suction inside the suction pipe 503 will accurately adsorb and clean the debris in the blind hole of the perforation gun through the circular tube formed by the two second arc-shaped blocks 502.

[0027] Working principle: When in use, the present invention uses an external rotating clamp to hold the perforating gun, and the part of the perforating gun that needs to be drilled passes through the middle of the two covers 404. The rotating clamp holds one end of the perforating gun, and the rotating clamp can also rotate the perforating gun after drilling.

[0028] When drilling is required for the perforating gun, the hydraulic cylinder 302 is activated to move downward. The downward movement of the hydraulic cylinder 302 will drive the motor 303 to move downward. The motor 303 slides on the slide rail 301. The downward movement of the motor 303 will drive the drill bit 304 to move downward. The downward movement of the drill bit 304 will drill the perforating gun.

[0029] As the motor 303 moves downward, it drives the rotating pin 305 to move downward as well. The rotating pin 305 slides within the first guide groove 4011. The downward movement of the rotating pin 305 causes the first sliding plate 401 to move to one end. The movement of the first sliding plate 401 to one end causes the second sliding plate 402 to move to one end. The movement of the second sliding plate 402 to one end causes the second guide groove 4021 to move to one end. The second guide groove 4021 is bent and moves towards one end. The movement will cause the two rotating pins 403 to move closer together. The two rotating pins 403 moving closer together will cause the two covers 404 to move closer together. The two covers 404 moving closer together will cause the two clamping blocks 406 to first contact the perforating gun. The outer surface of the clamping block 406 is covered with rubber. When the clamping block 406 contacts the perforating gun, it will compress the spring inside the sleeve 405. Under the action of the spring, the two clamping blocks 406 elastically clamp the perforating gun to avoid the vibration of the perforating gun affecting the processing accuracy when drilling.

[0030] As the two covers 404 move closer together, they also cause the two first arc-shaped blocks 501 to move closer together. The two first arc-shaped blocks 501 moving closer together will cause the two second arc-shaped blocks 502 to move closer together. The two second arc-shaped blocks 502 moving closer together will form a complete circular tube. The lower end of the motor 303 is provided with a rubber pad. The lower end of the motor 303 is tightly attached to the upper end of the two second arc-shaped blocks 502. The motor 303 seals the upper end of the circular tube formed by the two second arc-shaped blocks 502.

[0031] As the motor 303 moves downward, it will drive the second arc-shaped block 502 to move downward, and the second arc-shaped block 502 will fit into the drill hole of the perforating gun.

[0032] When the second arc-shaped block 502 moves downward, it will cause the connecting block 601 to move downward. The downward movement of the connecting block 601 will cause the rubber block 602 to move downward. The downward movement of the rubber block 602 will compress the spring inside the cover 404. The downward movement of the rubber block 602 will move away from the suction pipe 503. After the rubber block 602 moves away from the suction pipe 503, the negative pressure suction inside the suction pipe 503 will precisely adsorb and clean the debris in the blind hole of the perforation gun through the circular tube formed by the two second arc-shaped blocks 502.

[0033] During the descent of the drill bit 304, the structure first causes the two clamping blocks 406 to elastically clamp the perforating gun. The spring inside the sleeve 405 has a large elasticity. As the drill bit 304 descends, it also causes the two covers 404 to come into contact with each other, forming a closed space. At the same time, the two covers 404 also cause the two second arc-shaped blocks 502 to come into contact with each other, forming a circular tube. After the two second arc-shaped blocks 502 come into contact with each other, the motor 303 continues to move downward. At this time, the motor 303 continues to move downward, causing the two second arc-shaped blocks 502 to move downward. The two second arc-shaped blocks 502 come into contact with the perforating gun. At the same time, the two second arc-shaped blocks 502 move downward, causing the rubber block 602 to move away from the suction pipe 503. At this time, the negative pressure suction inside the suction pipe 503 will precisely absorb and clean the debris in the blind hole of the perforating gun through the circular tube formed by the two second arc-shaped blocks 502.

[0034] Meanwhile, the circular tube formed by the two second arc-shaped blocks 502 can prevent debris from splashing during drilling of the perforating gun. The two covers 404 fitting together further prevent debris from splashing. Clamping blocks 406 are installed inside the two covers 404 to elastically clamp the perforating gun. The side of the clamping block 406 in contact with the perforating gun is V-shaped, which can adapt to different pipe diameters. The clamping of the perforating gun by the two clamping blocks 406 can prevent vibration of the perforating gun during processing. The clamping of the perforating gun by the two clamping blocks 406 improves the accuracy of blind hole processing and improves product quality. Furthermore, the circular tube formed by the two second arc-shaped blocks 502 can also absorb and clean debris on the drill bit 304. When the drill bit 304 is working, it is positioned between the two second arc-shaped blocks 502. Inside the circular tube composed of two arc-shaped blocks 502, the motor 303 seals the upper end of the circular tube. This creates a negative pressure suction inside the circular tube. The circular tube also buffers the impact force of the motor 303 as it descends, as the descending arc-shaped blocks 502 compress the spring inside the cover 404. Furthermore, the circular tube can act as a limiter for the depth of the blind hole machining of the perforating gun. A protruding ring is provided at the upper end of the second arc-shaped block 502. When the protruding ring descends to a certain depth, it is blocked by the upper end of the first arc-shaped block 501. This design limits the depth of the blind hole machining of the perforating gun, ensuring that the depth of the blind hole machining is consistent for each perforating gun operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision drilling device for blind holes of a perforating gun, comprising a base (100), wherein a bracket (200) is fixedly connected to the upper end of the base (100), characterized in that: One end of the bracket (200) is provided with a drilling mechanism (300) for drilling holes in a perforating gun, and the drilling mechanism (300) includes a drill bit (304). The lower end of the drill bit (304) is provided with a limiting mechanism (400) for further fixing the perforating gun. The limiting mechanism (400) includes a cover (404) and a clamping block (406) is provided inside the cover (404). One end of the cover (404) is provided with a sealing mechanism (500) for sealing the drilling part of the perforating gun, and the sealing mechanism (500) includes a second arc-shaped block (502). One end of the second arc-shaped block (502) is provided with a cleaning mechanism (600) for cleaning up the debris generated by drilling. The cleaning mechanism (600) includes a rubber block (602).

2. The high-precision drilling equipment for blind holes with a perforating gun according to claim 1, characterized in that: The bracket (200) provides support for the drill bit (304), enabling the drill bit (304) to drill holes stably.

3. The high-precision drilling equipment for blind holes with a perforating gun according to claim 1, characterized in that: The drilling mechanism (300) includes a slide rail (301), one end of which is fixedly connected to the bracket (200). The lower end of the slide rail (301) is fixedly connected to the non-output end of a hydraulic cylinder (302). The output end of the hydraulic cylinder (302) is fixedly connected to a motor (303). The motor (303) is slidably connected to the slide rail (301), and the output end of the motor (303) is fixedly connected to the drill bit (304).

4. The high-precision drilling equipment for blind holes with a perforating gun according to claim 3, characterized in that: The drilling mechanism (300) also includes a rotating pin (305), which is rotatably connected to the surface of the motor (303).

5. The high-precision drilling equipment for blind holes with a perforating gun according to claim 4, characterized in that: The limiting mechanism (400) includes a first sliding plate (401), which is slidably connected to the base (100). A first guide groove (4011) is provided inside the first sliding plate (401). The first sliding plate (401) is slidably connected to the base (100). A second sliding plate (402) is fixedly connected to the lower end of the first sliding plate (401). The second sliding plate (402) is slidably connected to the base (100). A second guide groove (4021) is provided inside the second sliding plate (4021). A rotating pin (403) is slidably connected inside the second guide groove (4021). The upper end of the rotating pin (403) is rotatably connected to the cover (404).

6. The high-precision drilling equipment for blind holes with a perforating gun according to claim 5, characterized in that: The limiting mechanism (400) also includes a sleeve (405), which is fixedly connected inside the cover (404). The inside of the sleeve (405) is elastically connected to the clamping block (406) by a spring.

7. The high-precision drilling equipment for blind holes with a perforating gun according to claim 6, characterized in that: The sealing mechanism (500) includes a first arc-shaped block (501), the lower end of which is fixedly connected to the cover (404), the interior of which is slidably connected to a second arc-shaped block (502), the interior of which is provided with an opening, and the interior of which is fixedly connected with a vacuum tube (503).

8. The high-precision drilling equipment for blind holes with a perforating gun according to claim 7, characterized in that: The cleaning mechanism (600) includes a connecting block (601), the upper end of which is fixedly connected to the second arc-shaped block (502), one end of which is fixedly connected to the rubber block (602), the rubber block (602) is slidably connected to the vacuum pipe (503), and the rubber block (602) is elastically connected to the cover (404) by a spring.

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