Downhole pipe taking equipment
By designing downhole pipe retrieval equipment, the friction limiting between the clamping plate and the annulus is used to clamp the water pipe, solving the problem of difficult pipe retrieval during water well construction and improving construction efficiency and equipment versatility.
Patent Information
- Application Number
- CN202520106583.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The current well pipe-retrieving construction is difficult and inefficient due to the confined working environment.
A downhole pipe retrieval device was designed, including an annulus, a plate shaft, a clamping plate, a connecting rod, a sleeve, a rotating shaft, a bushing, a fixing rod, and a limiting plate. The clamping plate's driving mechanism creates frictional limiting between the well wall and the annulus. The water pipe is retrieved by a clamping mechanism formed by the clamping plate head and the upper edge of the annulus, thereby improving pipe retrieval efficiency.
It enhances the convenience and efficiency of pipe retrieval during well construction, improves the equipment's versatility and applicability, and is suitable for retrieval of different well equipment.
Smart Images
Figure CN223550094U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a downhole pipe-getting device, belonging to the field of water well equipment maintenance technology. Background Technology
[0002] A well is a vertically installed tubular structure for drawing or protecting groundwater. It is a water supply and drainage facility used in industrial and agricultural production, urban areas, transportation, and national defense.
[0003] The purpose of a water well is to house various types of water pipes inside. During the construction of a water well, after water testing and drilling, it is necessary to install water pipes and water pumps. However, during the construction process, there is a common problem that the water pipes need to be removed. The well diameter is small, but the depth is long. When removing the water pipes, the confined environment makes the removal difficult. Similarly, when repairing the water pipes, there are technical problems that require pipe removal and the construction efficiency is low.
[0004] In summary, existing water well pipe-retrieving operations face technical challenges due to the confined working environment, resulting in difficulties in pipe retrieval and low construction efficiency. Utility Model Content
[0005] The present invention aims to solve the technical problems of difficulty in pipe retrieval and low construction efficiency caused by the confined working environment during existing water well pipe retrieval operations, and thus provides a downhole pipe retrieval device.
[0006] The technical solution of this utility model is a downhole pipe retrieval device, which includes an annular cylinder, a plate shaft, a clamping plate, a connecting rod, a sleeve, a rotating shaft, a bushing, a fixing rod, and a limiting plate;
[0007] The ring cylinder extends through both ends, and the plate shaft is installed on the inner wall of the ring cylinder. A sleeve is provided at the tail of the clamping plate, and the sleeve is rotatably fitted onto the plate shaft. The clamping plate is hinged to the ring cylinder through the plate shaft. One end of the connecting rod is hinged to the top surface of the head of the clamping plate, and the other end of the connecting rod is hinged to the outer wall of the sleeve. The inner wall of the sleeve is provided with internal threads, and the lower surface of the rotating shaft is provided with external threads. The sleeve is threaded to the lower part of the rotating shaft. The bushing is rotatably fitted onto the middle part of the rotating shaft. A limiting piece is installed in the middle part of the rotating shaft. Two sets of the limiting pieces are respectively installed at the top and bottom ends of the rotating shaft. One end of the fixing rod is fixedly connected to the side wall of the bushing, and the other end of the fixing rod is fixedly connected to the top end of the ring cylinder.
[0008] As another improvement of this utility model, the cross-section of the ring cylinder is circular, and the size of the plate head of the clamping plate matches the size of the inner wall of the ring cylinder.
[0009] As another improvement of this utility model, the outer edge of the clamping plate is provided with plate teeth.
[0010] As another improvement of this utility model, several of the plate teeth are conical in shape, and the plate teeth are arranged parallel to the direction of the clamping plate.
[0011] As another improvement of this utility model, the top of the ring cylinder wall is provided with cylinder teeth.
[0012] As another improvement of this utility model, several of the cylindrical teeth are conical in shape, and the cylindrical teeth are arranged in a direction parallel to the cylinder wall of the annular cylinder.
[0013] As another improvement of this utility model, it also includes a plate tooth sleeve and a cylindrical tooth sleeve, wherein the plate tooth sleeve is detachably fitted onto the plate tooth, and the cylindrical tooth sleeve is detachably fitted onto the cylindrical tooth.
[0014] As another improvement of this utility model, both the plate toothed sleeve and the cylindrical toothed sleeve have an installation seam on their backs.
[0015] As another improvement of this utility model, both the plate toothed sleeve and the cylindrical toothed sleeve are made of rubber.
[0016] As another improvement of this utility model, a transmission hole is provided radially on the upper part of the rotating shaft.
[0017] The beneficial effects of this utility model are:
[0018] 1. This utility model adopts a pipe-retrieving device including a ring cylinder and a clamping plate. The device is cylindrical in shape and conforms to the size and shape of the water well. When retrieving the pipe during water well construction or maintenance, the cylindrical device can easily extend into the middle of the water pipe and the well wall. The outer wall of the device forms a horizontal circumferential limit by friction with the well wall. The clamping plate's driving mechanism uses the clamping mechanism formed by the clamping plate head and the upper edge of the ring cylinder to clamp the water pipe, thereby improving the efficiency of pipe retrieval.
[0019] 2. This utility model provides a downhole pipe-retrieval device that can retrieve some equipment used in water wells, such as water pumps, thereby improving the overall versatility of the pipe-retrieval device.
[0020] 3. The clamping port of the downhole pipe retrieval device of this utility model adopts a combination of clamping teeth and clamping tooth sleeve, which can be adjusted according to different usage needs, thereby improving the applicability of the downhole pipe retrieval device of this utility model. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a downhole pipe-getting device according to this utility model.
[0022] Figure 2 This is a front view schematic diagram of a downhole pipe retrieval device according to this utility model.
[0023] Figure 3 This is a schematic diagram of the rotating shaft.
[0024] Figure 4 This is a structural diagram of the ring cylinder, plate shaft, and clamping plate.
[0025] Figure 5 This is a schematic diagram of the plate toothed sleeve installation.
[0026] Figure 6 This is a schematic diagram of the plate toothed sleeve. Detailed Implementation
[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0028] Specific implementation method one: Combining Figures 1 to 4 This embodiment describes a downhole pipe-retrieval device, which includes an annular cylinder 1, a plate shaft 3, a clamping plate 2, a connecting rod 4, a sleeve 5, a rotating shaft 6, a bushing 8, a fixing rod 7, and a limiting plate 9.
[0029] The two ends of the ring cylinder 1 are through, the plate shaft 3 is installed on the inner wall of the ring cylinder 1, the tail of the clamping plate 2 is provided with a sleeve, the sleeve is rotatably fitted on the plate shaft 3, the clamping plate 2 is hinged to the ring cylinder 1 through the plate shaft 3, one end of the connecting rod 4 is hinged to the top surface of the head of the clamping plate 2, and the other end of the connecting rod 4 is hinged to the outer wall of the sleeve 5. The inner wall of the sleeve 5 is provided with internal threads, the lower surface of the rotating shaft 6 is provided with external threads, the sleeve 5 is threaded to the lower part of the rotating shaft 6, the bushing 8 is rotatably fitted on the middle part of the rotating shaft 6, the middle part of the rotating shaft 6 is installed with a limiting piece 9, the two sets of the limiting pieces 9 are respectively installed on the top and bottom ends of the rotating shaft 6, one end of the fixing rod 7 is fixedly connected to the side wall of the bushing 8, and the other end of the fixing rod 7 is fixedly connected to the top end of the ring cylinder 1.
[0030] The purpose of this embodiment is to enable well drilling to be completed in a small environment. The shaft diameter is selected as 15mm or 20mm. The entire downhole pipe retrieval equipment is made of stainless steel. The outer wall of the annulus 1 is provided with anti-slip protrusions, which facilitate the formation of a horizontal circumferential limit by friction with the well wall to prevent the shaft from slipping when rotating. The upper part of the shaft is connected to an external drive device. The forward and reverse rotation of the shaft drives the sleeve to move up and down, thereby enabling the clamping plate to complete the clamping action. The clamping mechanism formed by the clamping plate and the upper edge of the annulus uses the clamping plate drive mechanism to clamp the water pipe, thereby improving the efficiency of pipe retrieval.
[0031] Specific Implementation Method Two: Combining Figures 1 to 4This embodiment differs from Specific Embodiment 1 in that the cross-section of the annular cylinder 1 is circular, and the size of the clamping plate 2's head matches the inner wall size of the annular cylinder 1. The size of the clamping plate 2's head is slightly smaller than the inner wall size of the annular cylinder 1. This is to prevent the clamping plate 2's head from interfering with the inner wall of the annular cylinder 1 during rotation, and to allow the clamping plate 2's head to perform the clamping action and clamp water pipes and other well equipment. Other components and connections are the same as in Specific Embodiment 1.
[0032] Specific implementation method three: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that the outer edge of the clamping plate 2 is provided with teeth. This design increases the friction when clamping the water pipe, thus improving work efficiency. Other components and connection methods are the same as in specific embodiment one or two.
[0033] Specific implementation method four: Combination Figures 1 to 6 This embodiment differs from specific embodiment one in that several of the plate teeth are conical in shape and are arranged parallel to the clamping plate 2. This design facilitates processing, increases friction when gripping water pipes, and improves work efficiency. Other components and connection methods are the same as in any one of specific embodiments one to three.
[0034] Specific Implementation Method Five: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that the top of the ring cylinder 1 is provided with teeth. This design increases the friction when gripping the water pipe, thus improving work efficiency. Other components and connection methods are the same as any one of specific embodiments one through four.
[0035] Specific Implementation Method Six: Combination Figures 1 to 6 This embodiment differs from specific embodiment one in that several of the cylindrical teeth are conical in shape and are arranged parallel to the wall of the annular cylinder 1. This design facilitates processing; the combined action of the cylindrical teeth and the plate teeth increases the friction when gripping the water pipe, thus improving work efficiency. Other components and connection methods are the same as in any one of specific embodiments one through five.
[0036] Specific implementation method seven: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that it further includes a plate tooth sleeve 11 and a cylindrical tooth sleeve. The plate tooth sleeve 11 is detachably fitted onto the plate teeth, and the cylindrical tooth sleeve is detachably fitted onto the cylindrical teeth. The combination of clamping teeth and clamping tooth sleeves allows for adjustment according to different usage needs, improving the applicability of this embodiment. Other components and connection methods are the same as any one of specific embodiments one to six.
[0037] Specific implementation method eight: Combination Figures 1 to 6 This embodiment differs from specific embodiment one in that both the plate toothed sleeve 11 and the cylindrical toothed sleeve have mounting slots 12 on their backs. This design facilitates installation and improves stability during use. Other components and connection methods are the same as in any one of specific embodiments one through seven.
[0038] Specific Implementation Method Nine: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that both the plate toothed sleeve 11 and the cylindrical toothed sleeve are made of rubber. Other components and connection methods are the same as any one of specific embodiments one through eight.
[0039] Specific Implementation Method Ten: Combining Figures 1 to 6 This embodiment differs from specific embodiment one in that a transmission hole 10 is radially formed on the upper part of the rotating shaft 6. This design facilitates connection and installation with an external drive mechanism. Other components and connection methods are the same as in any one of specific embodiments one through nine.
[0040] Combination Figures 1 to 6 Explanation of the working principle of this utility model:
[0041] The upper part of the rotating shaft is connected to an external drive device. The rotating shaft rotates in both directions, causing the sleeve to move up and down, thereby enabling the clamping plate head to complete the clamping action. The clamping mechanism formed by the clamping plate head and the upper edge of the ring cylinder clamps the water pipe, improving the efficiency of pipe removal construction.
[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A downhole pipe-getting device, characterized in that... It includes a ring cylinder (1), a plate shaft (3), a clamping plate (2), a connecting rod (4), a sleeve (5), a rotating shaft (6), a bushing (8), a fixing rod (7), and a limiting piece (9); The two ends of the ring cylinder (1) are through, the plate shaft (3) is installed on the inner wall of the ring cylinder (1), the tail of the clamping plate (2) is provided with a sleeve, the sleeve is rotatably fitted on the plate shaft (3), the clamping plate (2) is hinged to the ring cylinder (1) through the plate shaft (3), one end of the connecting rod (4) is hinged to the top surface of the head of the clamping plate (2), the other end of the connecting rod (4) is hinged to the outer wall of the sleeve (5), the inner wall of the sleeve (5) is provided with an internal thread, the lower surface of the rotating shaft (6) is provided with an external thread, the sleeve (5) is threaded to the lower part of the rotating shaft (6), the bushing (8) is rotatably fitted on the middle part of the rotating shaft (6), the middle part of the rotating shaft (6) is installed with a limiting piece (9), the two sets of the limiting pieces (9) are respectively installed on the top and bottom ends of the rotating shaft (6), one end of the fixing rod (7) is fixedly connected to the side wall of the bushing (8), and the other end of the fixing rod (7) is fixedly connected to the top end of the ring cylinder (1).
2. The downhole pipe-getting equipment according to claim 1, characterized in that, The cross-section of the ring cylinder (1) is circular, and the size of the plate head of the clamping plate (2) matches the size of the inner wall of the ring cylinder (1).
3. The downhole pipe-getting equipment according to claim 1, characterized in that, The outer edge of the head of the clamp (2) is provided with plate teeth.
4. The downhole pipe-getting equipment according to claim 3, characterized in that, Several of the plate teeth are conical in shape and are arranged in a direction parallel to the clamp (2).
5. A downhole pipe-getting device according to claim 4, characterized in that, The top of the ring cylinder (1) is provided with cylinder teeth.
6. The downhole pipe-getting equipment according to claim 5, characterized in that, Several of the cylindrical teeth are conical in shape and are arranged along the direction parallel to the cylinder wall of the annular cylinder (1).
7. A downhole pipe-getting device according to claim 5, characterized in that, It also includes a plate tooth sleeve (11) and a cylindrical tooth sleeve, the plate tooth sleeve (11) being detachably fitted onto the plate tooth and the cylindrical tooth sleeve being detachably fitted onto the cylindrical tooth.
8. A downhole pipe-getting device according to claim 7, characterized in that, Both the plate toothed sleeve (11) and the cylindrical toothed sleeve have an installation slot (12) on their backs.
9. A downhole pipe-getting device according to claim 7, characterized in that, Both the plate toothed sleeve (11) and the cylindrical toothed sleeve are made of rubber.
10. A downhole pipe-getting device according to claim 1, characterized in that, A transmission hole (10) is provided radially on the upper part of the rotating shaft (6).