A directional well fishing device

Abstract

The utility model discloses a directional well fishing device relates to directional well fishing technical field, including connecting piece, and the base is fixedly installed on connecting piece, and the universal unit is fixedly installed on base, and the fishing pipe is fixedly installed on universal unit, and the side surface fixed mounting of fishing pipe has gyro wheel mechanism, and the fixed mounting of hydraulic chamber mechanism and guide unit is installed in fishing pipe, and the clamping unit includes the traction rod, first hydraulic telescopic mechanism, first telescopic link and clamping seat. Advantageous effect lies in through first hydraulic telescopic mechanism, traction rod, pressure detection mechanism, first telescopic link and first spring drive the self -adaptation clamping of fish that falls according to the shape of fish that falls on upper end to fish that falls, through first hydraulic telescopic mechanism and traction rod, first telescopic link and first spring's double clamping, guarantee the stability and reliability of fish that falls clamping, so that the fish that falls of fishing is inconvenient to separate, improves the efficiency and safety of fishing.

Description

Technical Field

[0001] This utility model relates to the field of directional well retrieval technology, and in particular to a directional well retrieval device. Background Technology

[0002] A directional well is a well in which the drilling tools are adjusted to guide the wellbore underground along a specific trajectory, direction, or angle. The purpose of a directional well is to reach a specific geological layer for more effective exploration, extraction, or injection operations.

[0003] A search revealed that Chinese patent application CN223241392U discloses a directional well retrieval device. This device mainly uses a transmission component in conjunction with an anti-drop component to cover the adsorbed metal fragments, effectively preventing the metal fragments adsorbed by the strong magnet from falling off the inner wall of the well during retrieval, thus improving the retrieval effect.

[0004] Compared with existing technologies in related fields, most existing retrieval devices are equipped with fixed grippers, which are difficult to adaptively grip fish of different shapes and sizes. The gripping stability is poor, and the gripped fish are easy to slip out, which greatly slows down the retrieval efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a directional well retrieval device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A directional well fishing device includes a connector, a base fixedly installed on the connector, a universal unit fixedly installed on the base, a fishing pipe fixedly installed on the universal unit, a roller mechanism fixedly installed on the side of the fishing pipe, and a clamping unit, a hydraulic chamber mechanism, and a guiding unit fixedly installed inside the fishing pipe.

[0008] The clamping unit includes a traction rod, a first hydraulic telescopic mechanism, a first telescopic rod, and a clamping seat. The two ends of the traction rod and the first telescopic rod are rotatably connected to the retrieval tube and the clamping seat, respectively. The first telescopic rod is located on both sides of the traction rod and the first hydraulic telescopic mechanism. A first spring is sleeved on the first telescopic rod. The two ends of the first hydraulic telescopic mechanism are rotatably connected to the traction rod and the retrieval tube, respectively. A pressure detection mechanism is fixedly installed inside the clamping seat, and a gripper mechanism is fixedly installed on the pressure detection mechanism.

[0009] Furthermore, anti-slip teeth are fixedly installed on the gripper mechanism.

[0010] Furthermore, the universal unit includes a universal joint mechanism and a second telescopic rod. The universal joint mechanism is rotatably mounted on the base and is fixedly connected to the retrieval pipe. The two ends of the second telescopic rod are rotatably connected to the base and the retrieval pipe, respectively. The second telescopic rod is arranged around the universal joint mechanism and a second spring is sleeved on the second telescopic rod.

[0011] Furthermore, an elastic sleeve is fixedly installed on the base and the retrieval pipe, and the elastic sleeve is arranged around the second telescopic rod and the universal joint mechanism.

[0012] Furthermore, the guiding unit includes an installation cavity, which is located inside the lower end of the retrieval tube. A second hydraulic telescopic mechanism is fixedly installed inside the installation cavity. An internally threaded sleeve is fixedly installed on the telescopic end of the second hydraulic telescopic mechanism. A threaded component is installed at the lower end of the internally threaded sleeve through a threaded engagement. The threaded component is rotatably installed inside the retrieval tube. A guide plate is fixedly installed at the lower end of the threaded component.

[0013] Furthermore, the guide plate is an arc shape that is narrow at one end and wide at the other.

[0014] Furthermore, through holes are provided on the side wall of the retrieval pipe.

[0015] The advantages compared to existing technologies are as follows:

[0016] 1. The first hydraulic telescopic mechanism, traction rod, pressure detection mechanism, first telescopic rod and first spring drive the gripper mechanism to adaptively grip the fish according to the shape of the upper end of the fish. The double gripping of the first hydraulic telescopic mechanism and traction rod, and the first telescopic rod and first spring ensures the stability and reliability of the fish gripping, making it difficult for the fish to fall out, thus improving the efficiency and safety of the retrieval.

[0017] 2. The roller mechanism, universal joint mechanism, second telescopic rod and second spring enable the fishing device to move adaptively according to the well inclination, reducing resistance during the movement. Then, the fishing pipe drives the guide plate to rotate, which facilitates the guide plate to move and guide the inclined end of the fish in the directional well, thereby accurately fishing the fish in the directional well and improving the fishing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first isometric structural schematic diagram of a directional well retrieval device according to the present invention;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of a directional well retrieval device according to the present invention;

[0021] Figure 3 This utility model describes a directional well retrieval device. Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This utility model describes a directional well retrieval device. Figure 2 Enlarged structural diagram at point B;

[0023] Figure 5 This utility model describes a directional well retrieval device. Figure 2 Enlarged structural diagram at point C;

[0024] Figure 6 This is a second isometric structural schematic diagram of the directional well retrieval device described in this utility model;

[0025] Figure 7 This utility model describes a directional well retrieval device. Figure 6 Enlarged structural diagram at point D.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Connector; 2. Base; 301. Traction rod; 302. First hydraulic telescopic mechanism; 303. Clamping seat; 304. Pressure detection mechanism; 305. Gripper mechanism; 306. Anti-slip teeth; 307. First telescopic rod; 308. First spring; 401. Mounting cavity; 402. Second hydraulic telescopic mechanism; 403. Internal threaded sleeve; 404. Threaded component; 405. Guide plate; 501. Universal joint mechanism; 502. Second telescopic rod; 503. Second spring; 6. Retrieval pipe; 7. Roller mechanism; 8. Hydraulic tank mechanism. Detailed Implementation

[0028] like Figures 1-7As shown, a directional well fishing device includes a connector 1, a base 2 fixedly mounted on the connector 1, a universal joint fixedly mounted on the base 2, a fishing pipe 6 fixedly mounted on the universal joint, a roller mechanism 7 fixedly mounted on the side of the fishing pipe 6, and a clamping unit, a hydraulic chamber mechanism 8, and a guiding unit fixedly mounted inside the fishing pipe 6. The connector 1, fishing pipe 6, hydraulic chamber mechanism 8, and roller mechanism 7 operate using existing technology. The entire device is mounted on the drill pipe of an external drilling device via the connector 1. The drill pipe of the external drilling device drives the entire fishing device into the directional well through the connector 1 and the base 2. The wheel mechanism 7 and the universal unit facilitate the movement of the fishing pipe 6 along the directional well, allowing the fishing pipe 6 to automatically adjust its angle when the well inclination changes, reducing the resistance of the fishing pipe 6 in the directional well, and keeping the fishing pipe 6 in the middle position of the directional well to ensure fishing efficiency. When the fishing pipe 6 moves to the end position of the fish, the guide unit guides the end of the fish to the middle position of the directional well, and the clamping unit clamps the fish. The drill pipe of the external drilling device retrieves the fish in the directional well through the connector 1, base 2, universal unit, fishing pipe 6 and clamping unit.

[0029] like Figures 2-4 , Figure 6 , Figure 7As shown, the clamping unit includes a traction rod 301, a first hydraulic telescopic mechanism 302, a first telescopic rod 307, and a clamping seat 303. The two ends of the traction rod 301 and the first telescopic rod 307 are rotatably connected to the retrieval tube 6 and the clamping seat 303, respectively. The first telescopic rod 307 is located on both sides of the traction rod 301 and the first hydraulic telescopic mechanism 302. A first spring 308 is sleeved on the first telescopic rod 307. The two ends of the first hydraulic telescopic mechanism 302 are rotatably connected to the traction rod 301 and the retrieval tube 6, respectively. A pressure detection mechanism 304 is fixedly installed inside the clamping seat 303, and a gripper mechanism 305 is fixedly installed on the pressure detection mechanism 304. The first hydraulic telescopic mechanism 302, the first telescopic rod 307, the gripper mechanism 305, the pressure detection mechanism 304, and the first spring 308 operate using existing technology. The first hydraulic telescopic mechanism 302 is connected to the hydraulic chamber mechanism 8. The traction rod 301 and the first telescopic rod 307... The clamping seat 303 is supported by the first spring 308. The first hydraulic telescopic mechanism 302 drives the clamping seat 303 through the traction rod 301. The clamping seat 303 drives the gripper mechanism 305 through the pressure detection mechanism 304 to adaptively clamp the fish according to the shape of the upper end of the fish, ensuring the stability of the clamping. The pressure detection mechanism 304 detects the force applied to the fish by the gripper mechanism 305. After clamping, the change in the detection value of the pressure detection mechanism 304 is used to detect whether the fish is clamped in place and the stability of the clamping. With the dual support of the first hydraulic telescopic mechanism 302 and the traction rod 301, and the first telescopic rod 307 and the first spring 308, the fish is stably clamped. When the first hydraulic telescopic mechanism 302 fails, the first telescopic rod 307 and the first spring 308 can still maintain the clamping force, making it difficult for the fish to fall out, thus improving the efficiency and safety of the retrieval.

[0030] like Figure 4 As shown, anti-slip teeth 306 are fixedly installed on the gripper mechanism 305. The anti-slip teeth 306 improve the gripper mechanism 305's anti-slip properties and the firmness of gripping the fallen fish, preventing the gripped fish from slipping and making it easier to retrieve the fallen fish.

[0031] like Figure 2 , Figure 5As shown, the universal joint unit includes a universal joint mechanism 501 and a second telescopic rod 502. The universal joint mechanism 501 is rotatably mounted on the base 2 and is fixedly connected to the retrieval pipe 6. The two ends of the second telescopic rod 502 are rotatably connected to the base 2 and the retrieval pipe 6, respectively. The second telescopic rod 502 is arranged around the universal joint mechanism 501, and a second spring 503 is sleeved on the second telescopic rod 502. The universal joint mechanism 501, the second telescopic rod 502, and the second spring 503 operate using existing technology. The universal joint mechanism 501 facilitates the deflection of the retrieval pipe 6, allowing the retrieval pipe 6 to better adapt to the inclination of the directional well and facilitates the movement and retrieval of the retrieval pipe 6 within the directional well. The second telescopic rod 502 and the second spring 503 provide elastic support and limit the retrieval pipe 6, preventing excessive deflection of the retrieval pipe 6.

[0032] like Figure 1 , Figure 2 , Figure 5 As shown, an elastic sleeve is fixedly installed on the base 2 and the retrieval pipe 6. The elastic sleeve surrounds the second telescopic rod 502 and the universal joint mechanism 501. The elastic sleeve works using existing technology. The elastic sleeve protects the second telescopic rod 502 and the universal joint mechanism 501, preventing impurities in the directional well from entering the second telescopic rod 502 and the universal joint mechanism 501 and affecting their normal operation.

[0033] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, the guiding unit includes a mounting cavity 401, which is located inside the lower end of the retrieval tube 6. A second hydraulic telescopic mechanism 402 is fixedly installed inside the mounting cavity 401. An internally threaded sleeve 403 is fixedly installed on the telescopic end of the second hydraulic telescopic mechanism 402. A threaded component 404 is installed on the lower end of the internally threaded sleeve 403 through a threaded engagement. The threaded component 404 is rotatably installed inside the retrieval tube 6. A guide plate 405 is fixedly installed on the lower end of the threaded component 404. The second hydraulic telescopic mechanism 402, the internally threaded sleeve 403, and the threaded component 404 operate using existing technology. During the retrieval process, the second hydraulic telescopic mechanism 402, the internally threaded sleeve 403, and the threaded component 404 are guided by the existing technology. The hydraulic telescopic mechanism 402 drives the internal threaded sleeve 403 to move. When the internal threaded sleeve 403 moves, the internal threaded sleeve 403 and the threaded part 404 move through the threaded engagement. Adjusting the connection length of the internal threaded sleeve 403 and the threaded part 404, the threaded part 404 drives the guide plate 405 to rotate, adjusting the tilt angle of the guide plate 405. The retrieval pipe 6 drives the guide plate 405 to rotate through the threaded part 404, which facilitates the guide plate 405 to move and guide the tilted end of the fish in the directional well, thereby accurately retrieving the fish in the directional well and improving the retrieval efficiency.

[0034] like Figure 6 , Figure 7 As shown, the guide plate 405 is an arc shape that is narrow at one end and wide at the other. The arc shape design of the guide plate 405 makes it easy for the end of the guide plate 405 to enter between the end of the fish and the directional well wall, thereby facilitating the lifting and guiding of the fish, so that the end of the fish moves towards the middle, making it easier to retrieve the fish and ensuring the efficiency of retrieval.

[0035] like Figure 1 , Figure 2 , Figure 6 As shown, the side wall of the retrieval pipe 6 is provided with through holes. When the retrieval pipe 6 moves in the directional well, the liquid inside the retrieval pipe 6 can be easily removed through the through holes, reducing the resistance of the retrieval pipe 6 entering the directional well and ensuring the efficiency of retrieval.

[0036] Working principle: such as Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, the entire device is installed on the drill pipe of the external drilling device via connector 1. The drill pipe of the external drilling device drives the entire fishing device into the directional well via connector 1 and base 2. The fishing pipe 6 moves along the directional well via roller mechanism 7 and is guided by roller mechanism 7. When the fishing pipe 6 moves in the directional well, the second telescopic rod 502 and universal joint mechanism 501 are protected by elastic sleeve. Universal joint mechanism 501 facilitates the fishing pipe 6 to deflect according to the angle of the directional well. The second telescopic rod 502 and the second spring 503 provide elastic support and limit for the fishing pipe 6 to avoid excessive deflection. When the fishing pipe 6 moves in the directional well, the liquid in the fishing pipe 6 can be removed through the through hole to reduce the resistance of the fishing pipe 6 entering the directional well.

[0037] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, when the retrieval pipe 6 moves to the depth where the fish fell in the directional well, the internal threaded sleeve 403 is moved by the second hydraulic telescopic mechanism 402. When the internal threaded sleeve 403 moves, the internal threaded sleeve 403 and the threaded part 404 move through the threaded engagement. The connection length of the internal threaded sleeve 403 and the threaded part 404 is adjusted. The threaded part 404 drives the guide plate 405 to rotate. The tilt angle of the guide plate 405 is adjusted. The retrieval pipe 6 drives the guide plate 405 to rotate through the threaded part 404. The guide plate 405 moves and guides the tilted end of the fish in the directional well, so that the end of the fish moves towards the middle of the directional well, increasing the convenience of clamping.

[0038] like Figures 2-4 , Figure 6 , Figure 7 As shown, the first hydraulic telescopic mechanism 302 drives the clamping seat 303 through the traction rod 301. The clamping seat 303 drives the gripper mechanism 305 through the pressure detection mechanism 304 to adaptively clamp the fish according to the shape of the upper end of the fish. The pressure detection mechanism 304 detects the force applied to the fish by the gripper mechanism 305. The anti-slip teeth 306 improve the anti-slip properties of the gripper mechanism 305 and the firmness of clamping the fish.

[0039] like Figures 2-4 , Figure 6 , Figure 7 As shown, after clamping, the drill pipe of the external drilling device retrieves the fish that has fallen into the directional well through the connector 1, base 2, universal unit, retrieval pipe 6, and clamping unit. The change in the detection value of the pressure detection mechanism 304 detects whether the fish is clamped in place and the stability of the clamping. The fish is stably clamped by the dual support of the first hydraulic telescopic mechanism 302 and the traction rod 301, the first telescopic rod 307 and the first spring 308. When the first hydraulic telescopic mechanism 302 fails, the first telescopic rod 307 and the first spring 308 can still maintain the clamping force.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A directional well fishing device, characterized in that, Includes a connector (1), on which a base (2) is fixedly installed, on which a universal unit is fixedly installed, on which a retrieval tube (6) is fixedly installed, on which a roller mechanism (7) is fixedly installed on the side of the retrieval tube (6), and inside the retrieval tube (6) are a clamping unit, a hydraulic chamber mechanism (8) and a guide unit; The clamping unit includes a traction rod (301), a first hydraulic telescopic mechanism (302), a first telescopic rod (307), and a clamping seat (303). The two ends of the traction rod (301) and the first telescopic rod (307) are rotatably connected to the retrieval tube (6) and the clamping seat (303), respectively. The first telescopic rod (307) is located on both sides of the traction rod (301) and the first hydraulic telescopic mechanism (302). A first spring (308) is sleeved on the first telescopic rod (307). The two ends of the first hydraulic telescopic mechanism (302) are rotatably connected to the traction rod (301) and the retrieval tube (6), respectively. A pressure detection mechanism (304) is fixedly installed inside the clamping seat (303), and a gripper mechanism (305) is fixedly installed on the pressure detection mechanism (304).

2. A directional well fishing device according to claim 1, characterized in that: Anti-slip teeth (306) are fixedly installed on the gripper mechanism (305).

3. A directional well fishing device according to claim 1, characterized in that: The universal unit includes a universal joint mechanism (501) and a second telescopic rod (502). The universal joint mechanism (501) is rotatably mounted on the base (2) and is fixedly connected to the retrieval pipe (6). The two ends of the second telescopic rod (502) are rotatably connected to the base (2) and the retrieval pipe (6) respectively. The second telescopic rod (502) is arranged around the universal joint mechanism (501), and a second spring (503) is sleeved on the second telescopic rod (502).

4. The directional well fishing device according to claim 3, characterized in that: An elastic sleeve is fixedly installed on the base (2) and the retrieval pipe (6), and the elastic sleeve is arranged around the second telescopic rod (502) and the universal joint mechanism (501).

5. A directional well fishing device according to claim 1, characterized in that: The guiding unit includes a mounting cavity (401), which is located inside the lower end of the retrieval tube (6). A second hydraulic telescopic mechanism (402) is fixedly installed inside the mounting cavity (401). An internal threaded sleeve (403) is fixedly installed on the telescopic end of the second hydraulic telescopic mechanism (402). A threaded component (404) is installed at the lower end of the internal threaded sleeve (403) through a threaded engagement. The threaded component (404) is rotatably installed inside the retrieval tube (6). A guide plate (405) is fixedly installed at the lower end of the threaded component (404).

6. A directional well fishing device according to claim 5, characterized in that: The guide plate (405) is an arc shape that is narrow at one end and wide at the other.

7. A directional well fishing device according to claim 1, characterized in that: The retrieval pipe (6) has a through hole on its side wall.

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