Shaft pigging and descaling device suitable for oilfield development water injection well
By designing a wellbore descaling device for water injection wells in oilfield development, the device uses the combined structure of the connecting rod body, centralizing device, transmission rod, extrusion ring and drill bit to solve the problem of easy damage in existing descaling methods. It achieves a stable and efficient descaling effect by solving the problems of environmental pollution, high water consumption and ineffectiveness on dense scale.
Patent Information
- Application Number
- CN202421172210.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The wellbore descaling method of water injection wells in the development of existing oilfields has chemical descaling that easily damages pipelines, pollutes the environment and is costly, high-pressure water jet consumes a lot of water and has water treatment problems, and sound wave descaling does not work for dense and hard scales. The problem.
A wellbore clearing and descaling device suitable for water injection wells in oilfield development is designed. The device includes a connecting rod body, a centralizing device, a transmission rod, an extrusion ring and a drill bit. When the drill bit encounters dirt, it is displaced, driving the transmission rod and the extrusion ring to move, pushing the triangular block to move outward, and making the centering block extend outward, so that the drill bit can be stably rotated and descaled under the driving of the motor.
This device can effectively stabilize the rotation of the drill bit during the descaling process, avoid jitter or shaking, and improve the stability and efficiency of descaling.
Smart Images
Figure CN222376456U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of oilfield development, and in particular to a wellbore descaling device suitable for water injection wells in oilfield development. Background Art
[0002] In the current oil pipeline descaling process, the commonly used descaling methods are roughly divided into three categories: chemical descaling, high-pressure water jet descaling and sonic descaling. However, among the traditional descaling methods, chemical descaling: it is easy to damage the pipeline during construction, pollute the environment, and it takes a long time and is costly; high-pressure water jet descaling: large installed capacity, high water consumption, and there are problems such as water treatment; sonic descaling: it is only suitable for looser scales and is not effective for dense and hard scales. Therefore, we proposed a wellbore descaling device suitable for water injection wells in oil field development. Utility Model Content
[0003] The present application provides a wellbore cleaning and descaling device suitable for water injection wells in oil field development to solve the above-mentioned problems.
[0004] The present application provides a wellbore descaling device suitable for water injection wells in oil field development, comprising:
[0005] A connecting rod body, wherein the outer right part of the connecting rod body is symmetrically connected with an outwardly deployed straightening device, the right side of the connecting rod body is movably plugged with a transmission rod, and the right end of the transmission rod is fixedly connected with a drill bit;
[0006] An extrusion ring, which is fixedly sleeved on the outer left end of the transmission rod through a bearing, and is movably inserted into the interior of the connecting rod body;
[0007] The inner side of the straightening device is fixedly connected with a triangular block, and the inclined surface of the triangular block is in contact with the outer inclined surface of the extrusion ring;
[0008] A rectangular rod is movably inserted into the left interior of the transmission rod, the transmission end of the rectangular rod is fixedly connected to the output end of the reducer, and the input end of the reducer is fixedly connected to the motor for rotation.
[0009] Preferably, the straightening device comprises a connecting ear plate, a straightening block, a connecting block and a triangular block, and a connecting rectangular opening is symmetrically opened on the outer side of the connecting rod body, and the left and right sides of the connecting rectangular opening are rotatably connected with connecting ear plates, and connecting blocks are rotatably connected between the inner sides of the connecting ear plates, and straightening blocks are rotatably connected between the connecting blocks, and triangular blocks are fixedly connected to the inner side walls of the straightening blocks.
[0010] Preferably, the outer side of the straightening block is evenly provided with anti-skid grooves.
[0011] Preferably, a rectangular hole is opened at the left end of the outer side of the transmission rod, the right side of the rectangular rod is movably inserted into the rectangular hole, and a first spring is also provided inside the rectangular hole.
[0012] Preferably, the right side of the transmission rod is sleeved with a limiting ring through a bearing on the outside between the drill bit and the connecting rod body, and a second spring is sleeved between the limiting ring and the connecting rod body on the outside of the transmission rod.
[0013] Preferably, a threaded connection hole is opened inside the left side of the connecting rod body.
[0014] Preferably, a magnetic ring is fixedly embedded inside the extrusion ring.
[0015] Preferably, the triangular block is an iron triangular block.
[0016] Preferably, a connecting plate is fixedly connected to the connecting end of the motor, and the connecting plate is fixedly connected to the left side of the inner cavity of the connecting rod body.
[0017] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:
[0018] The structure provided in the embodiment of the present application connects the connecting rod body to the external rod and then inserts it into the well. Then when the drill bit encounters dirt, the drill bit will encounter resistance, causing the drill bit to be displaced, thereby driving the transmission rod and the extrusion ring to be displaced, thereby pushing the triangular block to be displaced outward, thereby causing the straightening block to extend outward, so that the outer side of the straightening block squeezes the well wall outward, and when the motor drives the drill bit to rotate, the connecting rod body will not produce serious shaking or shaking, thereby making the drill bit rotation and scale removal more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 For this utility model Figure 2 Enlarged view of point A in the middle;
[0023] Figure 3 It is a cross-sectional view of the utility model;
[0024] Figure 4 This is a structural diagram of the connection between the transmission rod and the rectangular rod of the utility model.
[0025] In the figure: 1. connecting rod body; 2. straightening device; 21. connecting ear plate; 22. straightening block; 23. connecting block; 24. triangular block; 3. second spring; 4. transmission rod; 5. limiting ring; 6. drill bit; 7. connecting rectangular opening; 8. threaded connection hole; 9. connecting plate; 10. motor; 11. rectangular rod; 12. magnetic ring; 13. first spring; 14. extrusion ring; 15. reducer. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0027] Various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and simplicity and should not be understood as a hard limit to the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which are applicable regardless of the range. In addition, whenever a numerical range is indicated in the present application, it is meant to include any quoted numbers (fractions or integers) within the indicated range. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application, etc., can be purchased from the market or can be prepared by existing equipment.
[0028] In the present application, in the absence of any contrary description, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the present application, the terms "include", "comprise", etc. refer to "including but not limited to". In the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In the present application, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular items or plural items. For example, "at least one of a, b, or c" or "at least one of a, b and c" can both mean: a, b, c, ab, i.e. a and b, ac, bc, or abc, where a, b, c can be single or plural, respectively.
[0029] like Figure 1-Figure 4 As shown, the embodiment of the present application provides a wellbore cleaning and descaling device suitable for water injection wells in oil field development, comprising:
[0030] A connecting rod body 1, the outer right part of the connecting rod body 1 is symmetrically connected with a straightening device 2 that is expanded outward, the right side of the connecting rod body 1 is movably plugged with a transmission rod 4, and the right end of the transmission rod 4 is fixedly connected with a drill bit 6;
[0031] An extrusion ring 14, which is fixedly sleeved on the outer left end of the transmission rod 4 through a bearing, and the extrusion ring 14 is movably inserted into the interior of the connecting rod body 1;
[0032] The inner side of the straightening device 2 is fixedly connected with a triangular block 24, and the inclined surface of the triangular block 24 is in contact with the outer inclined surface of the extrusion ring 14;
[0033] A rectangular rod 11 is movably inserted into the left interior of the transmission rod 4, and the transmission end of the rectangular rod 11 is fixedly connected to the output end of the reducer 15, and the input end of the reducer 15 is fixedly connected to the motor 10 for rotation.
[0034] like Figure 2 and Figure 3As shown: the straightening device 2 includes a connecting ear plate 21, a straightening block 22, a connecting block 23 and a triangular block 24, the outer side of the connecting rod body 1 is symmetrically opened with a connecting rectangular opening 7, the left and right sides of the connecting rectangular opening 7 are rotatably connected with the connecting ear plates 21, the inner sides of the connecting ear plates 21 are rotatably connected with the connecting blocks 23, the straightening blocks 22 are rotatably connected between the connecting blocks 23, and the inner side walls of the straightening blocks 22 are fixedly connected with triangular blocks 24.
[0035] Specifically, the connection between the connecting ear plate 21 and the rectangular opening 7 is a rectangular groove, that is, the connecting ear plate 21 can rotate along the connecting shaft, and the connecting shaft can also be displaced left and right, thereby providing displacement space for the extension of the straightening block 22.
[0036] like Figure 1 As shown: the outer side of the straightening block 22 is evenly provided with anti-skid grooves.
[0037] Specifically, the anti-skid groove can increase the friction force of the straightening block 22 .
[0038] like Figure 3 and Figure 4 As shown: a rectangular hole is opened at the left end of the outer side of the transmission rod 4, the right side of the rectangular rod 11 is movably inserted into the rectangular hole, and a first spring 13 is also arranged inside the rectangular hole.
[0039] Specifically, the rectangular rod 11 is designed to be rectangular, which can drive the transmission rod 4 to rotate and also enable the transmission rod 4 to move left and right.
[0040] like Figure 3 and Figure 4 As shown: the right side of the transmission rod 4 is sleeved with a limiting ring 5 through a bearing on the outside between the drill bit 6 and the connecting rod body 1, and the outside of the transmission rod 4 is sleeved with a second spring 3 between the limiting ring 5 and the connecting rod body 1.
[0041] Specifically, the second spring 3 can reset the drill bit 6, that is, when the drill bit 6 encounters no resistance, the straightening device 2 contracts.
[0042] like Figure 3 As shown: a threaded connection hole 8 is opened inside the left side of the connecting rod body 1.
[0043] Specifically, the threaded connection hole 8 is for connecting to an external hole.
[0044] like Figure 3 As shown, a magnetic ring 12 is fixedly embedded inside the extrusion ring 14 .
[0045] Specifically, the magnetic ring 12 can absorb the triangular block 24 , so that the triangular block 24 is always in contact with the outer side of the extrusion ring 14 .
[0046] like Figure 3 As shown: the triangular block 24 is an iron triangular block.
[0047] Specifically, the triangular block 24 is used in conjunction with the extrusion ring 14 .
[0048] like Figure 3 As shown: the connecting end of the motor 10 is fixedly connected with a connecting plate 9, and the connecting plate 9 is fixedly connected to the left side of the inner cavity of the connecting rod body 1.
[0049] Specifically, the motor 10 adopts an existing motor on the market, which is a prior art. When the motor 10 is started, it drives the reducer 15 to rotate, and drives the rectangular rod 11 to rotate.
[0050] Principle of use: When the device is in use, the threaded connection hole 8 of the connecting rod body 1 is connected to the external rod, and a wire is provided in the middle of the rod, and the wire is connected to the motor 10, so that the motor 10 can be powered to control the running state of the motor 10;
[0051] When descaling, the connecting rod body 1 is connected to the external rod and then inserted into the well. Then, when the drill bit 6 encounters dirt, the drill bit 6 will encounter resistance, so that the drill bit 6 will be displaced, and the transmission rod 4 and the extrusion ring 14 will be displaced, thereby pushing the triangular block 24 to move outward, so that the straightening block 22 extends outward, so that the outer side of the straightening block 22 squeezes the well wall outward, and when the motor 10 drives the drill bit 6 to rotate, the connecting rod body 1 will not produce serious shaking or shaking, so that the drill bit 6 can rotate and descaling more stably;
[0052] After the descaling is completed, the first spring 13 and the second spring 3 will return to their original state, so that the drill bit 6 moves to the right, and the transmission rod 4 and the extrusion ring 14 move to the right, so that the straightening block 22 shrinks relatively, so that the connecting rod body 1 can be smoothly pulled out.
[0053] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.
Claims
1. A wellbore descaling device suitable for water injection wells in oil field development, characterized in that: include: A connecting rod body (1), the outer right part of the connecting rod body (1) is symmetrically connected to a straightening device (2) that is extended outward, the right side of the connecting rod body (1) is movably connected to a transmission rod (4), and the right end of the transmission rod (4) is fixedly connected to a drill bit (6); An extrusion ring (14), the extrusion ring (14) being fixedly sleeved on the outer left end of the transmission rod (4) via a bearing, and the extrusion ring (14) being movably inserted into the interior of the connecting rod body (1); The inner side of the straightening device (2) is fixedly connected with a triangular block (24), and the inclined surface of the triangular block (24) is in contact with the outer inclined surface of the extrusion ring (14); A rectangular rod (11) is movably inserted into the left interior of the transmission rod (4); the transmission end of the rectangular rod (11) is fixedly connected to the output end of a reducer (15); and the input end of the reducer (15) is fixedly connected to the motor (10) for rotation.
2. A wellbore descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: The straightening device (2) comprises a connecting ear plate (21), a straightening block (22), a connecting block (23) and a triangular block (24); a connecting rectangular opening (7) is symmetrically opened on the outer side of the connecting rod body (1); the left and right sides of the connecting rectangular opening (7) are both rotatably connected to the connecting ear plates (21); the inner sides of the connecting ear plates (21) are rotatably connected to the connecting blocks (23); the straightening blocks (22) are rotatably connected between the connecting blocks (23); and the triangular blocks (24) are fixedly connected to the inner side walls of the straightening blocks (22).
3. A wellbore descaling device suitable for water injection wells in oil field development according to claim 2, characterized in that: The outer side of the straightening block (22) is evenly provided with anti-slip grooves.
4. A wellbore descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: A rectangular hole is formed at the left end of the outer side of the transmission rod (4), the right side of the rectangular rod (11) is movably inserted into the rectangular hole, and a first spring (13) is also provided inside the rectangular hole.
5. A wellbore cleaning and descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: The right side of the transmission rod (4) is sleeved with a limiting ring (5) through a bearing on the outside between the drill bit (6) and the connecting rod body (1), and a second spring (3) is sleeved between the limiting ring (5) and the connecting rod body (1) on the outside of the transmission rod (4).
6. A wellbore cleaning and descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: A threaded connection hole (8) is provided inside the left side of the connecting rod body (1).
7. A wellbore cleaning and descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: A magnetic ring (12) is fixedly embedded inside the extrusion ring (14).
8. A wellbore descaling device suitable for water injection wells in oil field development according to claim 2, characterized in that: The triangular block (24) is an iron triangular block.
9. A wellbore cleaning and descaling device suitable for water injection wells in oil field development according to claim 1, characterized in that: The connection end of the motor (10) is fixedly connected to a connection plate (9), and the connection plate (9) is fixedly connected to the left side of the inner cavity of the connecting rod body (1).