Jarring device for underground operation
By designing a shock absorber for underground operations, a three-continuous shock chamber and linkage rod structure is used to achieve continuous shock of the shock absorber, solving the problem of low efficiency of existing hydraulic shock absorbers and improving shock efficiency.
Patent Information
- Application Number
- CN202421979062.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing hydraulic shocks have neutral gear during the shock process, resulting in discontinuous shock and low efficiency.
A shock device for underground operation is designed, adopting a three-continuous shock chamber and a linkage rod structure, and the first shock hammer and the second shock hammer are driven by hydraulic oil to interlaced to ensure continuous shock.
By interleaving shocks, the shock intervals can be effectively reduced, the shock efficiency can be improved, and the drill bit can be stable and loose.
Smart Images
Figure CN222823214U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drilling supporting equipment, in particular to a jar used for underground operations. Background Art
[0002] During drilling, the drill bit may get stuck in the well due to improper operation, excessive resistance, unstable connection and other factors. Therefore, the jar needs to be sent into the well and connected to the drill bit. The jar then vibrates through hydraulic, mechanical or hydraulic and mechanical methods to loosen the drill bit stuck in the well so that drilling can continue.
[0003] The existing hydraulic jar uses the pressure of hydraulic oil to move the jar downward to compress the spring, and then the oil pressure change of the hydraulic oil causes the spring to drive the jar to move upward quickly and collide with the inside of the jar, so that the jar shocks the drill bit. During this period, the shock work of the jar is not continuous. When the jar accumulates force and prepares to shock through the hydraulic oil, there is a gap so that the jar does not apply force to the drill bit, resulting in low efficiency. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide a jar for underground operations to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a jar for underground operations, comprising a jar body, a three-connected jar chamber is opened inside the jar body, and the three-connected jar chamber is connected to the inside of the jar, a linkage rod is passed through the top and bottom of the sealing ring, and a second jar hammer is connected to one end of the linkage rod, a first jar hammer is sleeved on the outside of the linkage rod, and a spring is connected to the bottom of the first jar hammer, and a hydraulic oil circuit is opened on the top of the jar body.
[0006] By adopting the above technical solution, when the first shock hammer moves downward to compress the spring and accumulate force, the first shock hammer drives the two second shock hammers to move downward through the linkage rod. After moving downward, the two second shock hammers collide with the inner wall of the three-stage shock chamber to produce a shocking effect. When the hydraulic oil changes and the spring drives the first shock hammer to move upward for shocking, the two second shock hammers move upward to prepare for the next shock.
[0007] Furthermore, the second impact hammer is arranged in a mirror image with the first impact hammer.
[0008] By adopting the above technical solution, when the hydraulic oil changes to cause the spring to drive the first jar hammer to move upward for jarring, the two second jar hammers move upward to prepare for the next jarring.
[0009] Furthermore, two of the second impact hammers and the sealing ring are provided, and the two second impact hammers are respectively connected to the two ends of the linkage rod.
[0010] By adopting the above technical solution, the sealing ring is set to prevent the hydraulic oil connection in the three-stage shock chamber from interfering with the displacement of the second shock hammer, and the two second shock hammers increase the force when shocking downward.
[0011] Furthermore, the first shock hammer and the second shock hammer are both slidably connected to the triple shock chamber.
[0012] By adopting the above technical solution, when the first shock hammer moves downward to compress the spring and accumulate force, the first shock hammer drives the two second shock hammers to move downward through the linkage rod. After moving downward, the two second shock hammers collide with the inner wall of the three-continuous shock chamber to produce a shocking effect.
[0013] Furthermore, there are two hydraulic oil circuits, and the two hydraulic oil circuits are arranged in a mirror image.
[0014] By adopting the above technical solution and providing two hydraulic oil circuits, the flow area of the hydraulic oil is increased, so that the hydraulic oil can flow in the jar body more easily.
[0015] Furthermore, one side of the hydraulic oil circuit is respectively connected to the upper part, the inner part and the lower part of the triple shock chamber.
[0016] By adopting the above technical solution, the hydraulic oil circuit is connected to the upper part, the inner part and the lower part of the three-chamber jar respectively, so that the hydraulic oil can simultaneously push a first jarring hammer and two second jarring hammers downward, making the three jarring hammers move synchronously.
[0017] Furthermore, there are two jar bodies, and the two jar bodies are mirror-imaged.
[0018] By adopting the above technical solution, the jar body is divided into two parts, and a split structure is adopted, which is convenient for processing the complex-shaped hydraulic oil circuit and the three-connected jar chamber inside the jar body. After that, the two jar bodies are fitted together and limited by anti-loosening bolts, which is convenient for processing and subsequent maintenance work.
[0019] Furthermore, five anti-loosening bolts are connected between the two jar bodies, and the two jar bodies are detachably connected via the anti-loosening bolts.
[0020] By adopting the above technical solution, the anti-loosening bolts are used for tightening, and the connection stability is better to effectively prevent the structure from loosening. At the same time, the anti-loosening bolts have good anti-vibration and anti-loosening effects, avoiding the phenomenon that the shock force causes the bolts to loosen and then cause the structure to loosen.
[0021] In summary, the utility model mainly has the following beneficial effects:
[0022] The utility model arranges a hydraulic oil circuit, a linkage rod, a first shock hammer and a second shock hammer. When the first shock hammer moves downward to compress the spring and accumulate force, the first shock hammer drives two second shock hammers to move downward through the linkage rod. After the two second shock hammers move downward, they collide with the inner wall of the three-continuous shock chamber to play a shocking role. When the hydraulic oil changes to make the spring drive the first shock hammer to move upward for shocking, the two second shock hammers move upward to prepare for the next shock. The first shock hammer and the second shock hammer perform shocking work alternately, which effectively reduces the shock interval and thus improves the shock efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the structure of the utility model;
[0024] Figure 2 It is a schematic cross-sectional structure diagram of the first percussion hammer of the utility model when working;
[0025] Figure 3 It is a schematic cross-sectional structure diagram of the second shock hammer of the utility model when working;
[0026] Figure 4 It is a schematic diagram of the explosion structure of the utility model.
[0027] In the figure: 1. Jar body; 2. Anti-loosening bolt; 3. Hydraulic oil circuit; 4. Linkage rod; 5. First jar hammer; 6. Second jar hammer; 7. Spring; 8. Sealing ring; 9. Triple jar chamber. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0029] The following describes an embodiment of the utility model based on its overall structure.
[0030] Embodiment 1:
[0031] A jar for underground operations, such as Figure 2-Figure 4As shown, it includes a jar body 1, a three-link jar chamber 9 is provided inside the jar body 1, and a sealing ring 8 is connected inside the three-link jar chamber 9. The setting of the sealing ring 8 prevents the hydraulic oil in the three-link jar chamber 9 from interfering with the displacement of the second jar hammer 6; a linkage rod 4 is passed through the top and bottom of the sealing ring 8, and one end of the linkage rod 4 is connected to the second jar hammer 6. There are two second jar hammers 6 and two sealing rings 8. The two second jar hammers 6 are respectively connected to the two ends of the linkage rod 4, and the first jar hammer 5 is sleeved on the outside of the linkage rod 4. The hammer 6 is arranged in a mirror image with the first shock hammer 5. The first shock hammer 5 and the second shock hammer 6 are both slidably connected to the three-continuous shock chamber 9. A spring 7 is connected to the bottom of the first shock hammer 5. When the first shock hammer 5 moves downward to compress the spring 7 to store force, the first shock hammer 5 drives the two second shock hammers 6 to move downward through the connecting rod 4. After moving downward, the two second shock hammers 6 collide with the inner wall of the three-continuous shock chamber 9 to play a shocking role. When the hydraulic oil changes to make the spring 7 drive the first shock hammer 5 to move upward for shocking, the two second shock hammers 6 move upward to prepare for the next shock.
[0032] See also Figure 1-Figure 4 In the above embodiment, a hydraulic oil circuit 3 is opened on the top of the jar body 1, and two hydraulic oil circuits 3 are provided. The two hydraulic oil circuits 3 are mirror-imaged, and one side of the hydraulic oil circuit 3 is respectively connected with the upper part, the inner part and the lower part of the three-continuous jarring chamber 9. The hydraulic oil circuit 3 is respectively connected with the upper part, the inner part and the lower part of the three-continuous jarring chamber 9, so that the hydraulic oil can simultaneously push a first jarring hammer 5 and two second jarring hammers 6 to move downward, so that the three jarring hammers move synchronously.
[0033] Embodiment 2:
[0034] On the basis of the above-mentioned embodiment 1, although the hydraulic oil circuit 3, the linkage rod 4, the first jar hammer 5, the second jar hammer 6 and the three-continuous jar chamber 9 are provided to facilitate staggered jarring work and effectively reduce the jarring interval; but the shapes of the hydraulic oil circuit 3 and the three-continuous jar chamber 9 are relatively complex and difficult to be processed by one-piece molding or drilling and milling; now, by providing a positive machine body 1 and an anti-loosening bolt 2, it is convenient to process the hydraulic oil circuit 3 and the three-continuous jar chamber 9.
[0035] See also Figure 1 and Figure 4 In the above embodiment, two jar bodies 1 are provided, and the two jar bodies 1 are mirror-imaged, and five anti-loosening bolts 2 are connected between the two jar bodies 1. The two jar bodies 1 are disassembled and connected by the anti-loosening bolts 2. The jar body 1 is divided into two parts, and a split structure is adopted, which is convenient for processing the complex-shaped hydraulic oil circuit 3 and the three-connected jarring cavity 9 inside the jar body 1. After that, the two jar bodies 1 are fitted together and limited by the anti-loosening bolts 2, which is convenient for processing and subsequent maintenance operations.
[0036] The implementation principle of the utility model is as follows: first, the jar body 1 is divided into two parts, and a split structure is adopted, so that the hydraulic oil circuit 3 and the three-connected jar chamber 9 of the complex shape inside the jar body 1 can be processed, and then the two jar bodies 1 are attached together and limited by the anti-loosening bolts 2, which is convenient for processing and subsequent maintenance operations;
[0037] The hydraulic oil can enter the interior of the triple shock chamber 9 through two hydraulic oil circuits 3, and the sealing ring 8 is set to prevent the hydraulic oil in the triple shock chamber 9 from interfering with the displacement of the second shock hammer 6, and the hydraulic oil circuit 3 is respectively connected with the upper part, the inner part and the lower part of the triple shock chamber 9, so that the hydraulic oil can simultaneously push the first shock hammer 5 and the two second shock hammers 6 to move downward, so that the three shock hammers move synchronously;
[0038] While the first shock hammer 5 moves downward to compress the spring 7 and accumulate force, the first shock hammer 5 drives the two second shock hammers 6 to move downward through the linkage rod 4. After moving downward, the two second shock hammers 6 collide with the inner wall of the three-continuous shock chamber 9 to play a shocking role. When the hydraulic oil changes to cause the spring 7 to drive the first shock hammer 5 to move upward for shocking, the two second shock hammers 6 move upward to prepare for the next shock.
[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A jar for underground operation, comprising a jar body (1), characterized in that: The jar body (1) is provided with three consecutive jarring chambers (9) inside, and the three consecutive jarring chambers (9) are connected to a sealing ring (8) inside, the sealing ring (8) is penetrated by a linkage rod (4) at the top and bottom, and one end of the linkage rod (4) is connected to a second jarring hammer (6), the linkage rod (4) is sleeved with a first jarring hammer (5) outside, and the bottom of the first jarring hammer (5) is connected to a spring (7), and the top of the jar body (1) is provided with a hydraulic oil circuit (3).
2. The jar for underground operation according to claim 1, characterized in that: The second impact hammer (6) is arranged in a mirror image with the first impact hammer (5).
3. The jar for underground operation according to claim 2, characterized in that: Two of the second shock hammers (6) and the sealing ring (8) are provided, and the two second shock hammers (6) are respectively connected to the two ends of the linkage rod (4).
4. The jar for underground operation according to claim 1, characterized in that: The first shock hammer (5) and the second shock hammer (6) are both slidably connected to the triple shock chamber (9).
5. The jar for underground operation according to claim 1, characterized in that: The hydraulic oil circuits (3) are provided with two, and the two hydraulic oil circuits (3) are arranged in a mirror image.
6. The jar for underground operation according to claim 5, characterized in that: One side of the hydraulic oil circuit (3) is respectively connected to the upper interior, the interior and the lower interior of the triple shock chamber (9).
7. The jar for underground operation according to claim 1, characterized in that: The jar main bodies (1) are provided with two, and the two jar main bodies (1) are arranged in a mirror image.
8. The jar for underground operation according to claim 7, characterized in that: Five anti-loosening bolts (2) are connected between the two jar bodies (1), and the two jar bodies (1) are detachably connected via the anti-loosening bolts (2).