Jarring device
By cooperating with the driving device and the impact assembly and using compressed gas as the power of the impact hammer, the problem of insufficient elastic force of the existing mechanical jar is solved, and the efficient unstuckness and normal drilling of the drill tool are achieved.
Patent Information
- Application Number
- CN202422851623.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The spring force of existing mechanical jars is relatively small, and prolonged use will reduce the jarring effect, resulting in reduced jar working efficiency.
The driving device and the impact component are combined, and compressed gas is used as the power of the impact hammer. The driving device drives the impact component to impact the outer shell. Combined with the sealing component, the continuous vibration of the drill bit is achieved to enhance the impact force.
The efficiency of drilling tools in getting out of stuck points is improved, the vibration effect of the jar is enhanced, and the ability of drilling tools to resume normal drilling is improved.
Smart Images
Figure CN223447010U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of drilling, especially relates to a jar. BACKGROUND
[0002] The jar is one of effective tools for releasing the stuck drill pipe accident. In the drilling operation, the drill pipe often gets stuck due to complex geological structure (such as well wall collapse, plastic flow and extrusion of the formation in the open hole) or improper technical measures (such as too long pump stop time, bit mud cake and the like). At this time, the jar can provide additional impact force to help the drill pipe get rid of the sticking point and restore normal drilling.
[0003] At present, the mechanical jar realizes the knocking of the knocking column and the jar when in use through the spring force, and the spring force is small, and the knocking effect is reduced and the working efficiency of the jar is reduced after long time use. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a jar to solve the technical problems in the background.
[0005] To achieve the above object, the specific technical scheme of the utility model is as follows:
[0006] A jar comprises a shell, a bearing rod is arranged in the shell, a thread is arranged at the bottom end of the bearing rod, and a drain hole is formed in the shell. A driving device is arranged in the shell, and an impact assembly matched with the driving device is arranged below the bearing rod in the shell. The driving device comprises a connecting cylinder arranged in the shell, a thread matched with an external drill rod is arranged in the connecting cylinder, a piston is slidably arranged in the connecting cylinder, a connecting rod is arranged at the bottom end of the piston, a top plate is arranged on the connecting rod, and a plurality of drain holes are arranged on the sidewall of the connecting cylinder around the axis. A cavity is formed in the shell, and a plugging assembly is slidably arranged in the cavity on the connecting cylinder. The impact assembly comprises a seat arranged in the shell, a pressure tank containing gas is arranged on the seat, an impact hammer is slidably arranged in the pressure tank, and an impact plate is arranged on the impact hammer.
[0007] Further, a spring is arranged between the inner bottom surface of the pressure tank and the bottom surface of the impact hammer.
[0008] Further, the plugging assembly comprises a plugging ring slidably arranged on the connecting cylinder, a touch rod is arranged on the plugging ring, and a first connecting block and a second connecting block are arranged on the inner wall of the touch rod. The impact plate is located between the first connecting block and the second connecting block.
[0009] Further, a partition plate is arranged in the cavity, the connecting cylinder penetrates through the partition plate, the plugging ring is located above the partition plate, and the touch rod and the plugging ring are slidably arranged. The drain holes of the connecting cylinder and the drain holes of the shell are located above the partition plate.
[0010] The utility model discloses a shocker has the following advantages:
[0011] The utility model discloses a shocker has the following advantages: BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a shocker structure schematic view of the utility model;
[0013] Figure 2 It is the inside structure schematic view of the utility model's shell;
[0014] Figure 3 It is the schematic diagram of drive arrangement and impact subassembly of the utility model;
[0015] Figure 4 It is the schematic diagram of the utility model's plugging subassembly.
[0016] Mark explanation in the drawing:
[0017] 1, shell;2, cavity;3, connecting barrel;4, drain hole;5, screw thread;6, piston;7, connecting rod;8, top plate;9, plugging ring;10, touch bar;11, first connecting block;12, second connecting block;13, pressure tank;14, impact hammer;15, impact plate;16, spring;17, seat;18, bearing rod;19, baffle. DETAILED DESCRIPTION
[0018] In order to better understand the purpose, structure and function of the utility model, the utility model shocker is further described in detail below in conjunction with the drawings.
[0019] As Figures 1 to 4 The utility model discloses a shocker, including shell 1, is equipped with bearing rod 18 in shell 1, and is equipped with screw thread 5 in its bottom end inside, is connected with the drilling tool through screw thread 5.Located in the shell 1 is equipped with drive arrangement, is connected with the external drill rod through drive arrangement, and is equipped with the impact subassembly that cooperates with drive arrangement in the shell 1 below bearing rod 18.Drive arrangement drives the impact subassembly work, and the impact subassembly generates impact force, and the impact force is applied on the bearing rod 18 of shell 1, and bearing rod 18 drives shell 1 to vibrate, so this can reach the purpose that shell 1 drives the drilling tool to vibrate, makes the drilling tool separate from the stuck point.
[0020] The driving device, serving as the driving force, specifically includes a connecting tube 3 within the housing 1. A threaded portion 5 is provided within the connecting tube 3 for connecting to the external drill rod, and the threaded portion 5 is located in the upper middle portion of the connecting tube 3. A piston 6 is also slidably disposed within the connecting tube 3, and a connecting rod 7 is provided at the bottom end of the piston 6. The connecting rod 7 extends through the bottom plate of the connecting tube 3 and slides therewith. A top plate 8 is also provided at the bottom end of the connecting rod 7. Water from the drill rod can directly enter the connecting tube 3. This water pushes the piston 6 downward, applying force to the impact assembly through the connecting rod 7 and top plate 8, thereby causing the impact assembly to begin accumulating force. To facilitate the drainage of the water entering the connecting tube 3, a plurality of drain holes 4 are distributed around the sidewall of the connecting tube 3 along its axis. Furthermore, a drain hole 4 is provided in the upper middle portion of the housing 1. When the drain hole 4 is opened, the water in the connecting tube 3 flows out through the drain hole 4 and out through the drain hole 4 in the housing 1. When the water in the connecting tube 3 flows out, the top plate 8 does not exert force on the impact assembly, and the impact assembly will instantly push the top plate 8 to move to the initial position. The cooperation between the impact assembly and the supporting rod 18 in the shell 1 can make the shell 1 achieve a vibration effect.
[0021] Among them, a cavity 2 is opened inside the shell 1, and a sealing component is slidingly provided on the connecting tube 3 in the cavity 2 to open and close the drainage hole 4 thereon. By cooperating with the sealing component and the drainage hole 4 on the connecting tube 3, and combining the use of the impact component, the impact component and the driving device can be made to reciprocate, so as to achieve the effect of making the shell 1 vibrate continuously. Specifically, the sealing component includes a sealing ring 9 slidingly provided on the connecting tube 3, and the sealing ring 9 can achieve the sealing of the drainage hole 4 on the connecting tube 3. At the same time, a touch rod 10 is provided at the bottom end of the sealing ring 9, and a first connecting block 11 and a second connecting block 12 are provided on the inner wall of the touch rod 10. As shown Figure 3 As shown, the impact assembly for driving the housing 1 to vibrate includes a base 17 disposed within the housing 1. A pressure tank 13 filled with gas is mounted on the base 17. An impact hammer 14 is slidably mounted within the pressure tank 13. An impact plate 15 is mounted on the impact hammer 14. The impact plate 15 can impact a bearing rod 18. When impacted, the bearing rod 18 vibrates the housing 1. It should be noted that the impact plate 15 is located between the first connecting block 11 and the second connecting block 12.
[0022] When the top plate 8 pushes the impact plate 15 to move downward, the impact plate 15 also pushes the impact hammer 14 to move downward, and the gas in the pressure tank 13 is compressed. When the impact plate 15 moves to contact the first connecting block 11, the first connecting block 11 is driven by the impact plate 15 to move the blocking ring 9 downward through the touch rod 10, so that the blocking ring 9 unblocks the drain hole 4 of the connecting cylinder 3. At this time, the water source in the connecting cylinder 3 flows out of the drain hole 4 of the connecting cylinder 3, and then flows out of the drain hole 4 of the outer shell 1. At the same time, the pressure in the connecting cylinder 3 is lost, and the gas in the pressure tank 13 pushes the impact hammer 14 and the impact plate 15 to move upward, and drives the top plate 8, the connecting rod 7 and the piston 6 to move upward. When the impact plate 15 contacts the bearing rod 18, the impact and vibration of the outer shell 1 driven by the bearing rod 18 is completed. During the upward movement of the impact plate 15, the second connecting block 12 is contacted and moved upward with the impact plate 15, and the touch rod 10 drives the blocking ring 9 to move upward, so that the blocking ring 9 blocks the drain hole 4 on the connecting cylinder 3. When the drain hole 4 on the connecting cylinder 3 is blocked again, the water source in the drill rod enters the connecting cylinder 3 again, and the piston 6 drives the connecting rod 7 and the top plate 8 to move downward. The top plate 8 pushes the impact plate 15 in the impact assembly to move downward again. In this way, the outer shell 1 can be continuously vibrated. In order to increase the impact of the impact hammer 14 and the impact plate 15 on the bearing rod 18, a spring 16 is arranged between the inner bottom surface of the pressure tank 13 and the bottom surface of the impact hammer 14. The spring 16 and the gas in the pressure tank 13 can improve the vibration effect of the jar and speed up the efficiency of the drill tool to escape from the stuck point.
[0023] As preferred, a partition plate 19 is further arranged in the cavity 2, the connecting cylinder 3 penetrates the partition plate 19, the blocking ring 9 is located above the partition plate 19, and the touch rod 10 and the blocking ring 9 are slidingly arranged. At the same time, the drain hole 4 of the connecting cylinder 3 and the drain hole 4 of the outer shell 1 are located above the partition plate 19, and the drain hole 4 of the connecting cylinder 3 and the drain hole 4 of the outer shell 1 are correspondingly arranged. In this way, when the water source in the connecting cylinder 3 is discharged outward, the water source directly enters the cavity above the partition plate 19 in the outer shell 1, and then is discharged through the drain hole 4 of the outer shell 1. When the water source in the connecting cylinder 3 is discharged, the water source entering the outer shell 1 does not enter the cavity below the partition plate 19, which can protect the components in the cavity below the partition plate 19 in the outer shell 1 and improve the service life of the jar.
[0024] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.
Claims
1. A jar, characterized in that: The invention comprises a housing (1), a bearing rod (18) is provided in the housing (1), a thread (5) is provided inside the bottom end of the bearing rod (18), and a drainage hole (4) is provided on the housing (1); A driving device is provided in the housing (1), and an impact assembly cooperating with the driving device is provided below the bearing rod (18) in the housing (1); The driving device comprises a connecting tube (3) arranged in the housing (1), a thread (5) connected to an external drill rod is provided in the connecting tube (3), a piston (6) is slidably provided in the connecting tube (3), a connecting rod (7) is provided at the bottom end of the piston (6), a top plate (8) is provided on the connecting rod (7), and a plurality of drainage holes (4) are distributed on the side wall of the connecting tube (3) around the axis thereof; A cavity (2) is formed in the housing (1), and a sealing component is provided on the connecting tube (3) so as to slide in the cavity (2); The impact assembly comprises a base (17) arranged in the housing (1), a pressure tank (13) filled with gas is arranged on the base (17), an impact hammer (14) is slidably arranged in the pressure tank (13), and an impact plate (15) is arranged on the impact hammer (14).
2. A jar according to claim 1, characterized in that: A spring (16) is provided in the pressure tank (13) between its inner bottom surface and the bottom surface of the impact hammer (14).
3. A jar according to claim 2, characterized in that: The blocking assembly comprises a blocking ring (9) slidably arranged on the connecting tube (3), a touch rod (10) is provided on the blocking ring (9), and a first connecting block (11) and a second connecting block (12) are provided on the inner wall of the touch rod (10); The impact plate (15) is located between the first connecting block (11) and the second connecting block (12).
4. A jar according to claim 3, characterized in that: A partition (19) is provided in the cavity (2), the connecting tube (3) passes through the partition (19), the sealing ring (9) is located above the partition (19), and the touch rod (10) and the sealing ring (9) are arranged to slide. The drainage hole (4) of the connecting cylinder (3) and the drainage hole (4) on the outer shell (1) are located above the partition (19).