Self-locking full-hydraulic jar while drilling

Abstract

The utility model discloses a self-locking type full-hydraulic while-drilling jar which comprises a shell, a mandrel is connected to the interior of the shell in a sliding mode, four sliding blocks are fixedly connected to the outer surface of the mandrel, positioning matching blocks are connected to the outer surfaces of the four sliding blocks in a sliding mode, and the positioning matching blocks are fixedly connected with the inner wall of the shell. An impact head is fixedly connected to the lower surface of the mandrel, six positioning buffer blocks are fixedly connected to the interior of the mandrel, buffer grooves are formed in the six positioning buffer blocks and communicate with the upper surfaces and the lower surfaces of the positioning buffer blocks, and buffer springs are connected to the inner surfaces of the buffer grooves in a sleeving mode; the lower surfaces of the buffer springs abut against jacking blocks, the lower surfaces of the jacking blocks are fixedly connected with buffer disc springs, and the number of the buffer disc springs is three. Through cooperation of the sliding block and the positioning matching block, stable sliding of the mandrel in the shell is ensured, friction and abrasion are reduced, meanwhile, loads are shared, and the reliability of the structure is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of shock device technology, specifically a self-locking fully hydraulic drilling shock device. Background Technology

[0002] Drill string getting stuck in the well is a common problem during oil drilling. In this situation, the drill string cannot move up and down normally, affecting the progress of drilling operations. To solve this problem, engineers have developed various unsticking tools, among which the drilling rig is an effective unsticking tool.

[0003] Self-locking fully hydraulic drilling breaker may fail due to wear and fatigue during long-term use, especially under frequent vibration and pressure changes, which will reduce the overall reliability of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a self-locking fully hydraulic drilling breaker. Through the cooperation of the slider and the positioning block, the mandrel is ensured to slide stably in the housing, reducing friction and wear, while distributing the load and enhancing the reliability of the structure. The design of the slider and the buffer disc spring makes the equipment more stable and efficient during the breaker process, while reducing maintenance costs and improving the safety and reliability of drilling operations.

[0005] To achieve the above objectives, a self-locking, fully hydraulic, drilling impactor is provided, comprising: a housing; a mandrel slidably connected inside the housing; four sliders fixedly connected to the outer surface of the mandrel; positioning blocks slidably connected to the outer surfaces of the four sliders, and the positioning blocks fixedly connected to the inner wall of the housing; an impact head fixedly connected to the lower surface of the mandrel; six positioning buffer blocks fixedly connected inside the mandrel; buffer grooves formed inside the six positioning buffer blocks, and each buffer groove communicating with the upper and lower surfaces of the positioning buffer blocks; buffer springs sleeved on the inner surfaces of the buffer grooves; a clamping block abutting the lower surface of the buffer springs; and three buffer disc springs fixedly connected to the lower surface of the clamping blocks. The combination of buffer springs and buffer disc springs efficiently absorbs impact energy, reduces equipment vibration and mechanical fatigue, and extends service life.

[0006] According to the self-locking fully hydraulic drilling breaker, a tremor chamber is provided between the impact head and the positioning buffer block, and a female adjusting ring is provided on the upper surface of the impact head. The tremor chamber provides space for tremor, and the female adjusting ring is used to adjust the position of the impact head to ensure accurate transmission of tremor force.

[0007] According to the self-locking fully hydraulic drilling oscillator described above, the upper surface of the female adjusting retaining ring abuts against a female adjusting ring, and the internal thread of the female adjusting ring is connected to an adjusting ring positioning bolt, which extends to the outer surface of the housing. The cooperation between the female adjusting ring and the adjusting ring positioning bolt enables precise adjustment of the oscillation force, ensuring that the equipment adapts to different working conditions.

[0008] According to the self-locking fully hydraulic drilling breaker, a male adjusting ring is threadedly connected to the upper surface of the female adjusting ring. The upper surface of the male adjusting ring abuts against several energy storage disc springs, which abut sequentially. The combination of the male adjusting ring and the energy storage disc springs stores the impact energy, ensuring the impact effect while reducing energy loss.

[0009] According to the self-locking fully hydraulic drilling breaker, the upper surface of the energy storage disc spring abuts against an upper retaining ring of the energy storage disc spring. A lower retaining ring of the second slip is disposed on the upper surface of the upper retaining ring of the energy storage disc spring. The upper surface of the lower retaining ring of the second slip abuts against a second slip. Four second slip positioning bolts are internally threaded onto the second slip. The upper surface of the second slip abuts against the upper retaining ring of the second slip. A second damping hydraulic cylinder is disposed between the lower retaining ring of the second slip and the upper retaining ring of the energy storage disc spring. The combination of the second slip and the damping hydraulic cylinder enhances the transmission efficiency of the impact force while absorbing excess impact, protecting the equipment from damage.

[0010] According to the self-locking fully hydraulic drilling oscillator described above, a pressure block is provided on the outer surface of the mandrel, and an impact pressure chamber is provided on the upper surface of the pressure block. A control valve is provided inside the impact pressure chamber. The design of the pressure block and the impact pressure chamber enables efficient storage and release of hydraulic energy, ensuring a stable and reliable impact effect.

[0011] According to the self-locking fully hydraulic drilling oscillator, the outer surface of the mandrel abuts against a first slip, and four first slip positioning bolts are internally threaded onto the first slip. The upper and lower surfaces of the first slip abut against an upper first slip retaining ring and a lower first slip retaining ring, respectively. A first damping hydraulic cylinder is disposed between the pressure block and the upper first slip retaining ring. The combination of the first slip and the damping hydraulic cylinder enhances the stability of the equipment and reduces vibration and impact during the oscillation process.

[0012] According to the self-locking fully hydraulic drilling impactor, each impact head is adapted to a positioning buffer block, and the impact head contacts the upper surface of the buffer disc spring. The contact design between the impact head and the buffer disc spring ensures efficient transmission of the impact force while absorbing excess impact and extending the equipment's service life.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model is equipped with a slider, a positioning lever and block, an impact head, a positioning buffer block, a buffer groove, a buffer spring, a clamping block, and a buffer disc spring. Through the cooperation between the slider and the positioning block, the mandrel is ensured to slide stably within the housing, reducing friction and wear, while also distributing the load and enhancing the reliability of the structure. The design of the slider and the buffer disc spring makes the equipment more stable and efficient during the impact process, while reducing maintenance costs and improving the safety and reliability of drilling operations.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a cross-sectional perspective view of a self-locking, fully hydraulic, drilling-while-drilling shock absorber according to this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0019] Figure 3 This utility model Figure 1 Enlarged view of the structure at point B in the middle;

[0020] Figure 4 This utility model Figure 1 Enlarged view of the structure at point C.

[0021] In the diagram: 1. Outer shell; 2. Control valve; 3. Shock-pressurizing chamber; 4. Pressurizing block; 5. First slip; 6. Upper retaining ring of the first slip; 7. Lower retaining ring of the first slip; 8. Positioning bolt of the first slip; 9. Second slip; 10. Lower retaining ring of the second slip; 11. Upper retaining ring of the second slip; 12. Upper retaining ring of the energy storage disc spring; 13. Energy storage disc spring; 14. Female adjusting retaining ring; 15. Male adjusting ring; 16. Female adjusting ring; 17. Positioning bolt of the adjusting ring; 18. Spindle; 19. Positioning mating block; 20. Slider; 21. Impact head; 22. Positioning buffer block; 23. Buffer groove; 24. Buffer spring; 25. Tightening block; 26. Buffer disc spring; 27. First damping hydraulic cylinder; 28. Shock-acting chamber; 29. ​​Second damping hydraulic cylinder; 30. Positioning bolt of the second slip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a self-locking fully hydraulic drilling impactor, comprising: a housing 1, a spindle 18 slidably connected inside the housing 1, four sliders 20 fixedly connected to the outer surface of the spindle 18, the sliders 20 slidingly engaging with positioning blocks 19 to ensure stable sliding of the spindle 18 within the housing 1, the positioning blocks 19 slidably connected to the outer surfaces of the four sliders 20 and fixedly connected to the inner wall of the housing 1, the positioning blocks 19 being fixed within the housing 1 to limit the sliding range of the sliders 20, an impact head 21 fixedly connected to the lower surface of the spindle 18 for transmitting impact force during impact, and six positioning buffer blocks fixedly connected inside the spindle 18. 22. Positioning buffer blocks 22 are used to disperse and absorb impact force. Six positioning buffer blocks 22 have buffer grooves 23 inside, and the buffer grooves 23 are all connected to the upper and lower surfaces of the positioning buffer blocks 22. The buffer grooves 23 provide installation space for the buffer springs 24. The buffer springs 24 are sleeved on the inner surface of the buffer grooves 23. The buffer springs 24 are used to absorb and mitigate impact force. The lower surface of the buffer springs 24 abuts against the clamping block 25. The clamping block 25 transmits the force of the buffer springs 24 to the buffer disc springs 26. The lower surface of the clamping block 25 is fixedly connected to the buffer disc springs 26. The buffer disc springs 26 further absorb and disperse impact force. There are three buffer disc springs 26. Multiple buffer disc springs 26 enhance the buffering effect.

[0024] A shock chamber 28 is provided between the impact head 21 and the positioning buffer block 22, providing space for shock. A female adjusting retaining ring 14 is provided on the upper surface of the impact head 21, used to adjust the position of the impact head 21. The upper surface of the female adjusting retaining ring 14 abuts against a female adjusting ring 16, which adjusts the position of the impact head 21 via a threaded connection. An adjusting ring positioning bolt 17 is threadedly connected inside the female adjusting ring 16, extending to the outer surface of the outer casing 1, and is used to fix the position of the female adjusting ring 16. A male adjusting ring 15 is threadedly connected to the upper surface of the female adjusting ring 16, used to further adjust the shock force. The upper surface of the male adjusting ring 15 abuts against an energy storage disc spring 13, used to store and release shock energy. Several energy storage disc springs 13 are present, and they abut against each other sequentially. Multiple energy storage disc springs 13 enhance the energy storage effect. The upper surface of the energy storage disc spring 13 abuts against the upper retaining ring 12 of the energy storage disc spring, which is used to fix the position of the energy storage disc spring 13. The upper surface of the upper retaining ring 12 of the energy storage disc spring is provided with a second lower retaining ring 10 of the second collet, which is used to support the second collet 9. The upper surface of the lower retaining ring 10 of the second collet abuts against the second collet 9, which is used to fix and transmit the impact force. The internal threads of the second collet 9 are connected with four second collet positioning bolts 30, which are used to fix the position of the second collet 9. The upper surface of the second collet 9 abuts against the upper retaining ring 11 of the second collet, which is used to restrict the movement of the second collet 9. A second damping hydraulic cylinder 29 is provided between the lower retaining ring 10 of the second collet and the upper retaining ring 12 of the energy storage disc spring, which is used to control the damping effect of the impact.

[0025] A pressure block 4 is provided on the outer surface of the mandrel 18. The pressure block 4 is used to transmit pressure. A shock pressure chamber 3 is provided on the upper surface of the pressure block 4. The shock pressure chamber 3 is used to store pressurized liquid. A control valve 2 is provided inside the shock pressure chamber 3. The control valve 2 is used to regulate the liquid flow in the shock pressure chamber 3. A first collet 5 is abutted on the outer surface of the mandrel 18. The first collet 5 is used to fix the position of the mandrel 18. Four first collet positioning bolts 8 are threaded inside the first collet 5. The first collet positioning bolts 8 are used to fix the position of the first collet 5. The upper and lower surfaces of the first collet 5 are divided into The first collide has an upper retaining ring 6 and a lower retaining ring 7. The upper retaining ring 6 and the lower retaining ring 7 are used to restrict the movement of the first collide 5. A first damping hydraulic cylinder 27 is provided between the pressure block 4 and the upper retaining ring 6. The first damping hydraulic cylinder 27 is used to control the damping effect of the pressure block 4. The impact head 21 is adapted to the positioning buffer block 22. The impact head 21 cooperates with the positioning buffer block 22 to ensure the effective transmission of the impact force. The impact head 21 contacts the upper surface of the buffer disc spring 26. The impact head 21 contacts the buffer disc spring 26 to further absorb the impact force.

[0026] Working principle: The positions of the male adjusting ring 15 and the female adjusting ring 16 are adjusted by adjusting the positioning bolt 17 to set the required impact force and stroke distance. The preload of the energy storage disc spring 13 is checked to ensure that it can store enough energy. The outer shell 1 is lifted to store kinetic energy, and hydraulic oil is injected into the impact pressure chamber 3 through the external hydraulic system. The hydraulic oil is pressurized and moves downward through the pressure block 4, and then pushes the spindle 18 to slide downward, compressing the energy storage disc spring 13 and the buffer disc spring 26 to store kinetic energy. During the lifting and release of the outer shell 1, the slider 20 cooperates with the positioning block 19 to ensure stable sliding. The first slip 5 and the second slip 9 are to prevent premature release before the kinetic energy is released, which would cause kinetic energy loss and fail to meet the release requirements. The energy storage disc spring 13 releases the stored energy, pushing the spindle 18 to move upward quickly. The impact head 21 hits the positioning buffer block 22 to generate impact force, while the buffer spring 24 and the buffer disc spring 26 absorb the impact.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-locking, fully hydraulic, drilling-while-drilling shock absorber, comprising: The outer shell (1) has a spindle (18) slidably connected inside. The spindle (18) is characterized in that: four sliders (20) are fixedly connected to the outer surface of the spindle (18), and positioning mating blocks (19) are slidably connected to the outer surfaces of the four sliders (20), and the positioning mating blocks (19) are fixedly connected to the inner wall of the outer shell (1). An impact head (21) is fixedly connected to the lower surface of the spindle (18). Six positioning buffer blocks (22) are fixedly connected inside the spindle (18). Buffer grooves (23) are opened inside the six positioning buffer blocks (22), and the buffer grooves (23) are all connected to the upper and lower surfaces of the positioning buffer blocks (22). Buffer springs (24) are sleeved on the inner surface of the buffer grooves (23). A pressing block (25) abuts against the lower surface of the buffer springs (24). Buffer disc springs (26) are fixedly connected to the lower surface of the pressing block (25). The number of buffer disc springs (26) is three.

2. The self-locking fully hydraulic drilling breaker as described in claim 1, characterized in that: A shock chamber (28) is provided between the impact head (21) and the positioning buffer block (22), and a female adjustment retaining ring (14) is provided on the upper surface of the impact head (21).

3. The self-locking fully hydraulic drilling breaker as described in claim 2, characterized in that: The upper surface of the female adjusting ring (14) abuts against the female adjusting ring (16), and the female adjusting ring (16) is internally threaded with an adjusting ring positioning bolt (17), which extends to the outer surface of the outer shell (1).

4. A self-locking fully hydraulic drilling breaker as described in claim 3, characterized in that: The upper surface of the female adjusting ring (16) is threaded with a male adjusting ring (15), and the upper surface of the male adjusting ring (15) abuts against an energy storage disc spring (13). There are several energy storage disc springs (13), which abut against each other in sequence.

5. A self-locking fully hydraulic drilling breaker as described in claim 4, characterized in that: The upper surface of the energy storage disc spring (13) abuts against the upper retaining ring (12) of the energy storage disc spring. The upper surface of the upper retaining ring (12) of the energy storage disc spring is provided with the lower retaining ring (10) of the second retaining ring. The upper surface of the lower retaining ring (10) of the second retaining ring abuts against the second retaining ring (9). The internal threads of the second retaining ring (9) are connected with four second retaining ring positioning bolts (30). The upper surface of the second retaining ring (9) abuts against the upper retaining ring (11) of the second retaining ring. A second damping hydraulic cylinder (29) is provided between the lower retaining ring (10) of the second retaining ring and the upper retaining ring (12) of the energy storage disc spring.

6. A self-locking, fully hydraulic, drilling-while-drilling shock absorber as described in claim 1, characterized in that: The outer surface of the mandrel (18) is provided with a pressure block (4), the upper surface of the pressure block (4) is provided with a shock pressure chamber (3), and the inside of the shock pressure chamber (3) is provided with a control valve (2).

7. A self-locking fully hydraulic drilling breaker as described in claim 6, characterized in that: The outer surface of the spindle (18) abuts against the first slip (5), and the first slip (5) is internally threaded with four first slip positioning bolts (8). The upper and lower surfaces of the first slip (5) abut against the first slip upper retaining ring (6) and the first slip lower retaining ring (7) respectively. A first damping hydraulic cylinder (27) is provided between the pressure block (4) and the first slip upper retaining ring (6).

8. A self-locking, fully hydraulic, drilling-while-drilling shock absorber as described in claim 1, characterized in that: The impact head (21) is adapted to the positioning buffer block (22), and the impact head (21) is in contact with the upper surface of the buffer disc spring (26).

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