Conduction type mechanical jar for borehole operation

Abstract

The utility model discloses a conduction type mechanical jar for borehole operation, which relates to the field of mechanical jarring and comprises a first shell, the bottom of the first shell is in threaded connection with a third shell, a jarring hammer is mounted on the upper portion of the inside of the first shell, a jarring groove is formed in the bottom of the jarring hammer, and an anti-abrasion assembly is arranged on the inner wall of the jarring groove. And the anti-abrasion assembly comprises a groove formed in the inner wall of the jarring groove and a movable cavity formed in the upper portion of the interior of the first shell, an inflatable airbag ring is installed on the lower portion of the interior of the movable cavity, a pressing ring is installed at the top end of the inflatable airbag ring, and one side of the top of the pressing ring is connected with a threaded shaft extending to the top of the first shell through a bearing. Through the arrangement of the anti-abrasion assembly and the arrangement of the elastic gasket, the outer wall of the second shell can be prevented from being in direct contact with the inner wall of the jarring groove, abrasion caused by continuous friction between the second shell and the jarring hammer when the second shell moves up and down is avoided, and the protection effect on the second shell is improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical jars, in particular to a conductive mechanical jar for underground operations. Background Art

[0002] Downhole operation is a technical means to ensure the normal production of oil and water wells during the exploration and development of oil fields. The oil and natural gas buried thousands or tens of thousands of meters underground are precious underground resources. In the long-term production process, oil and water wells are constantly corroded by underground oil, gas and water, gradually ageing, and experiencing various types of failures, resulting in the failure of oil and water wells to produce normally or even stop production. Therefore, downhole operations must be carried out on oil and water wells with problems and failures to restore normal production of oil and water wells. In drilling operations, due to complex geological structures (such as well wall collapse, plastic flow and squeezing of formations in open holes) and improper technical measures (such as long pump shutdown time, mud packing on the drill bit, etc.), drilling tools often encounter resistance and drill bit jams. The jar is one of the effective tools to resolve drill bit jam accidents.

[0003] According to a Chinese patent with publication number CN212272094U, a conductive mechanical jar for underground operations is disclosed. A first rod body and a second shell are driven by a cable, so that the second shell impacts a jar hammer, and the jar hammer transmits force to unblock the drill bit. The first clamping block is pulled on the second shell so as not to be in direct contact with the second shell, thereby preventing the first clamping block from being worn by the second shell, and the second shell is pressed down to jam it, thereby facilitating the next jarring operation.

[0004] Regarding the above-mentioned disclosed patent content, since the top of the second shell is located inside the shock groove, when the second shell moves upward, it can hit the shock hammer, causing the shock hammer to vibrate, thereby achieving a shock effect. However, when the second shell moves up and down, it will rub against the inner wall of the shock groove, which will cause wear of the second shell over a long period of time, thereby reducing the protection effect of the second shell. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a conductive mechanical jar for underground operations to solve the technical problem that the second shell rubs against the jarring groove when moving up and down, which easily causes wear of the second shell.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a conductive mechanical jar for underground operations, comprising a first shell, characterized in that: the bottom of the first shell is threadedly connected to a third shell, a jar hammer is installed on the upper part of the interior of the first shell, a jar groove is provided at the bottom of the jar, and an anti-wear component is provided on the inner wall of the jar groove, the anti-wear component comprises a groove provided on the inner wall of the jar groove and an active cavity provided on the upper part of the interior of the first shell, an inflatable airbag ring is installed on the lower part of the active cavity, and a pressure ring is installed on the top of the inflatable airbag ring, one side of the top of the pressure ring is connected to a threaded shaft extending to the top of the first shell through a bearing, a plurality of air guide tubes are provided below the inner wall of the inflatable airbag ring, a sealing airbag ring is provided on the inner wall of the groove, an elastic gasket is provided on the inner wall of the sealing airbag ring, and a plurality of inflatable tubes are provided on the top of the sealing airbag ring.

[0007] By adopting the above technical solution, the provision of the elastic gasket can prevent the outer wall of the second shell from directly contacting the jar hammer, thereby avoiding wear caused by continuous friction between the second shell and the jar hammer when the second shell moves up and down.

[0008] Furthermore, a first access slot is formed at the top of the first shell, and a second access slot is formed at the bottom of the third shell.

[0009] By adopting the above technical solution, the first access groove is provided to facilitate access to the cable so that the cable is connected to the top of the rod body 4, and the second access groove is provided to facilitate connection of a stuck drill bit.

[0010] Furthermore, a spring is installed at the lower part of the interior of the third shell, and the top end of the spring is connected to a movable plate, and the second shell is fixed to the top of the movable plate.

[0011] By adopting the above technical solution, the upward movement of the second shell will drive the movable plate to move upward, and the movable plate will stretch the spring, so as to facilitate the subsequent downward movement and reset of the movable plate.

[0012] Furthermore, a rod body is provided inside the second shell, and the top end of the rod body passes through the impact hammer and extends to the inside of the first access slot.

[0013] By adopting the above technical solution, when the rod body moves upward, it will drive the second shell to move upward, so that the second shell hits the shock hammer so that the shock hammer can vibrate.

[0014] Furthermore, both sides of the third shell are provided with slide grooves, guide rods are fixed inside the slide grooves, and slide plates are sleeved on the outer walls of the guide rods.

[0015] By adopting the above technical solution, the slide plate can slide on the guide rod to guide the second shell.

[0016] Furthermore, a buffer spring is installed on the top of the slide plate, and the buffer spring is sleeved on the outer wall of the guide rod, and the top end of the buffer spring is connected to the inner upper part of the slide groove.

[0017] By adopting the above technical solution, the buffer spring will be squeezed when the slide plate moves upward, so that the buffer spring is compressed, which facilitates the subsequent pushing of the slide plate to move downward and reset.

[0018] Furthermore, one side of the slide plate is connected to the second shell, and the second shell is slidably connected to the slide groove through the slide plate.

[0019] By adopting the above technical solution, the slide plate can slide inside the slide groove, thereby improving the stability of the second shell when moving.

[0020] Furthermore, a card slot is provided at the lower part of both sides of the second shell, a cavity is provided at both sides inside the third shell, and a return spring is installed inside the cavity, and one end of the return spring is connected to a card block.

[0021] By adopting the above technical solution, when the second shell moves upward, the block is pushed to move into the cavity, and when the block moves, it squeezes the return spring, so that the return spring is compressed.

[0022] Furthermore, the top and bottom of the card block are both inclined, and the card block is adapted to the card slot.

[0023] By adopting the above technical solution, the card block can be inserted into the card slot, thereby positioning the second shell.

[0024] Furthermore, the top of the second shell is located inside the shock groove, and the outer wall of the second shell is in contact with the elastic gasket.

[0025] By adopting the above technical solution, the second shell can be moved into the shock groove, and then strike the shock hammer to make the shock hammer vibrate.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] The utility model is provided with an anti-wear component. The provision of an elastic gasket can prevent the outer wall of the second shell from directly contacting the inner wall of the shock groove, avoid the second shell from continuously rubbing against the shock hammer when moving up and down and causing wear, thereby improving the protection effect of the second shell. At the same time, when the elastic gasket is worn and the jar is not operating underground, the user can rotate the threaded shaft to move the threaded shaft downward and drive the pressure ring to move downward, and the pressure ring squeezes the inflatable airbag ring, so that the inflatable airbag ring is compressed. At this time, the air inside the pressure ring will enter the sealing airbag ring through the air guide tube and the inflation tube, so that the sealing airbag ring expands inwardly and squeezes the elastic gasket, so that the elastic gasket is squeezed inwardly, so that the elastic gasket can fit tightly with the second shell, thereby playing a role in protecting the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the overall front section structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of the second housing of the utility model;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the pressure ring of the utility model;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing airbag ring of the utility model.

[0033] In the figure: 1. first shell; 2. first access slot; 3. shock hammer; 4. rod body; 5. second shell; 6. slide slot; 7. buffer spring; 8. guide rod; 9. shock slot; 10. slide plate; 11. cavity; 12. reset spring; 13. block; 14. slot; 15. movable plate; 16. spring; 17. second access slot; 18. anti-wear component; 1801. groove; 1802. sealing airbag ring; 1803. inflation tube; 1804. air guide tube; 1805. threaded shaft; 1806. movable cavity; 1807. pressure ring; 1808. inflation airbag ring; 1809. elastic gasket; 19. third shell. DETAILED DESCRIPTION

[0034] 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.

[0035] The following describes an embodiment of the utility model based on its overall structure.

[0036] Embodiment 1:

[0037] A conductive mechanical jar for underground operations, such as Figure 1-Figure 5 As shown, it includes a first shell 1, and the bottom of the first shell 1 is threadedly connected to the third shell 19, which is convenient for disassembling the first shell 1 and the third shell 19. A shock hammer 3 is installed on the upper part of the interior of the first shell 1, and a shock groove 9 is provided at the bottom of the shock hammer 3, and an anti-wear component 18 is provided on the inner wall of the shock groove 9. A first access groove 2 is provided on the top of the first shell 1, and a second access groove 17 is provided on the bottom of the third shell 19. The setting of the first access groove 2 is convenient for accessing the cable so that the cable is connected to the top of the rod body 4, and the setting of the second access groove 17 is convenient for connecting the stuck drill bit. A spring 16 is installed at the lower part of the interior of the third shell 19, and the top of the spring 16 is connected to a movable plate 15, and the top of the movable plate 15 is fixed with a second shell 5. The upward movement of the second shell 5 will drive the movable plate 15 to move upward, and the movable plate 15 stretches the spring 16, which is convenient for subsequently driving the movable plate 15 to move down and reset. An anti-wear pad is provided at the lower part of the outer wall of the second shell 5.

[0038] See also Figure 1-Figure 3 The second shell 5 is provided with a rod body 4 inside, and the top end of the rod body 4 passes through the shock hammer 3 and extends to the inside of the first access slot 2. When the rod body 4 moves up, it will drive the second shell 5 to move up, so that the second shell 5 knocks the shock hammer 3 so that the shock hammer 3 can vibrate. Slide grooves 6 are provided on both sides of the interior of the third shell 19, and a guide rod 8 is fixed inside the slide groove 6. The outer wall of the guide rod 8 is sleeved with a slide plate 10, and the slide plate 10 can slide on the guide rod 8 to guide the second shell 5. A buffer spring 7 is installed on the top of the slide plate 10, and the buffer spring 7 is sleeved on the outer wall of the guide rod 8, and the top end of the buffer spring 7 is connected to the upper part of the inner part of the slide groove 6. When the slide plate 10 moves up, the buffer spring 7 is squeezed, so that the buffer spring 7 is compressed by force, which is convenient for the subsequent pushing of the slide plate 10 to move down and reset. One side of the slide plate 10 is connected to the second shell 5, and the second shell 5 is slidably connected to the slide groove 6 through the slide plate 10, so that the slide plate 10 slides inside the slide groove 6, thereby improving the stability of the second shell 5 when moving.

[0039] Specifically, the anti-wear component 18 includes a groove 1801 opened on the inner wall of the shock groove 9 and an active cavity 1806 opened on the upper part of the first shell 1. An inflatable airbag ring 1808 is installed at the lower part of the active cavity 1806, and a pressure ring 1807 is installed at the top of the inflatable airbag ring 1808. The top side of the pressure ring 1807 is connected to a threaded shaft 1805 extending to the top of the first shell 1 through a bearing. The pressure ring 1807 is slidably connected to the active cavity 1806 so that the pressure ring 1807 slides inside the active cavity 1806. When the pressure ring 1807 moves downward, it squeezes the inflatable airbag ring 1808, so that the inflatable airbag ring 1808 is compressed by force. The threaded shaft 1805 is threadedly connected to the first shell 1, and a knob is installed on the top of the threaded shaft 1805, which is convenient for the user to rotate the threaded shaft 1805 by the knob, thereby allowing the threaded shaft 1805 to move.

[0040] Specifically, a plurality of air guide tubes 1804 are provided below the inner wall of the inflatable airbag ring 1808, a sealing airbag ring 1802 is provided on the inner wall of the groove 1801, the number of the inflatable tubes 1803 is the same as the number of the air guide tubes 1804, the inflatable tubes 1803 correspond to the air guide tubes 1804 one by one, the top of the inflatable tube 1803 fits with the bottom of the air guide tube 1804, so that the gas can pass through the inflatable tube 1803 and the air guide tube 1804 into the sealed airbag ring 1802, so that the sealed airbag ring 1802 can expand inward and seal. An elastic gasket 1809 is provided on the inner wall of the airbag ring 1802. The setting of the elastic gasket 1809 can prevent the outer wall of the second shell 5 from directly contacting the shock hammer 3, thereby avoiding wear caused by continuous friction between the second shell 5 and the shock hammer 3 when the second shell 5 moves up and down, and a plurality of inflation tubes 1803 are provided on the top of the sealing airbag ring 1802. The top of the second shell 5 is located inside the shock groove 9, and the outer wall of the second shell 5 fits with the elastic gasket 1809 so that the second shell 5 can move into the shock groove 9 and then strike the shock hammer 3 to vibrate the shock hammer 3.

[0041] Embodiment 2:

[0042] On the basis of the above-mentioned first embodiment, in order to facilitate the second housing 5 after the clamping column is moved down and reset, the following structure is provided.

[0043] See also Figure 2 , slots 14 are provided at the lower sides of both sides of the second shell 5, and cavities 11 are provided on both sides of the interior of the third shell 19, and a return spring 12 is installed inside the cavity 11, and one end of the return spring 12 is connected to a block 13. When the second shell 5 moves up, the block 13 is pushed to move into the cavity 11, and when the block 13 moves, it squeezes the return spring 12, so that the return spring 12 is compressed. The top and bottom of the block 13 are both inclined, and the block 13 is adapted to the slot 14. When the block 13 is inserted into the slot 14, the second shell 5 can be positioned.

[0044] The working principle of the utility model is as follows: first, when in use, the staff connects the cable to the device through the first access slot 2, and connects the stuck drill bit to the device through the second access slot 17. The operation of the cable drives the rod body 4 to pull up, and the rod body 4 drives the second shell 5 to pull up. When the second shell 5 is pulled up, the block 13 is pushed to move, so that the block 13 moves out of the slot 14 and no longer limits the second shell 5. The block 13 will squeeze the reset spring 12, and at the same time, the upward movement of the second shell 5 will drive the slide plate 10 to slide. The slot 6 slides inside and squeezes the buffer spring 7, and the second housing 5 moves up to hit the jar hammer 3, which drives the first housing 1 and the third housing 19 to vibrate and vibrates the stuck drill bit, completing a jamming operation. The cable drives the rod body 4 to press down, and the second housing 5 moves down. When the slot 14 is aligned with the block 13, the reset spring 12 stretches and pushes the block 13 to reset and move, so that the block 13 is stuck in the slot 14, so as to limit the second housing 5 and facilitate the next jarring operation.

[0045] At the same time, the setting of the elastic gasket 1809 can prevent the outer wall of the second shell 5 from directly contacting the inner wall of the shock groove 9, thereby avoiding wear caused by continuous friction between the second shell 5 and the shock hammer 3 when moving up and down. When the elastic gasket 1809 is worn and the jar is not operating underground, the user can rotate the threaded shaft 1805 to move the threaded shaft 1805 downward and drive the pressure ring 1807 downward. The pressure ring 1807 squeezes the inflatable airbag ring 1808, so that the inflatable airbag ring 1808 is compressed. At this time, the air inside it will enter the sealing airbag ring 1802 through the air guide tube 1804 and the inflation tube 1803, so that the sealing airbag ring 1802 expands inward and squeezes the elastic gasket 1809, so that the elastic gasket 1809 is squeezed inward, so that the elastic gasket 1809 can fit tightly with the second shell 5, thereby playing a role in protecting the second shell 5.

[0046] 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 conductive mechanical jar for underground operation, comprising a first housing (1), characterized in that: The bottom of the first shell (1) is threadedly connected to a third shell (19), a shock hammer (3) is installed on the upper part of the interior of the first shell (1), a shock groove (9) is provided on the bottom of the shock hammer (3), and an anti-wear component (18) is provided on the inner wall of the shock groove (9), the anti-wear component (18) comprises a groove (1801) provided on the inner wall of the shock groove (9) and an active cavity (1806) provided on the upper part of the interior of the first shell (1), an inflatable airbag ring (1808) is installed on the lower part of the active cavity (1806), and an inflatable airbag ring (1808) is provided on the inner wall of the shock groove (9). A pressure ring (1807) is installed at the top of the bag ring (1808), and a threaded shaft (1805) extending to the top of the first shell (1) is connected to one side of the top of the pressure ring (1807) through a bearing. A plurality of air guide tubes (1804) are arranged below the inner wall of the inflatable bag ring (1808), a sealing bag ring (1802) is arranged on the inner wall of the groove (1801), and an elastic gasket (1809) is arranged on the inner wall of the sealing bag ring (1802), and a plurality of inflation tubes (1803) are arranged at the top of the sealing bag ring (1802).

2. A conductive mechanical jar for underground operation according to claim 1, characterized in that: A first access groove (2) is provided at the top of the first shell (1), and a second access groove (17) is provided at the bottom of the third shell (19).

3. A conductive mechanical jar for underground operation according to claim 1, characterized in that: A spring (16) is installed at the lower part of the interior of the third housing (19), and the top end of the spring (16) is connected to a movable plate (15), and the top of the movable plate (15) is fixed with the second housing (5).

4. A conductive mechanical jar for underground operation according to claim 3, characterized in that: A rod body (4) is provided inside the second shell (5), and the top end of the rod body (4) penetrates the impact hammer (3) and extends to the inside of the first access slot (2).

5. A conductive mechanical jar for underground operation according to claim 1, characterized in that: Slide grooves (6) are provided on both sides of the interior of the third housing (19), a guide rod (8) is fixed inside the slide groove (6), and a slide plate (10) is sleeved on the outer wall of the guide rod (8).

6. A conductive mechanical jar for underground operation according to claim 5, characterized in that: A buffer spring (7) is installed on the top of the slide plate (10), and the buffer spring (7) is sleeved on the outer wall of the guide rod (8), and the top end of the buffer spring (7) is connected to the inner upper part of the slide groove (6).

7. A conductive mechanical jar for underground operation according to claim 5, characterized in that: One side of the slide plate (10) is connected to the second shell (5), and the second shell (5) is slidably connected to the slide groove (6) via the slide plate (10).

8. A conductive mechanical jar for underground operation according to claim 3, characterized in that: The second shell (5) is provided with a card slot (14) at the bottom of both sides, and the third shell (19) is provided with a cavity (11) at both sides inside, and a return spring (12) is installed inside the cavity (11), and one end of the return spring (12) is connected to a card block (13).

9. A conductive mechanical jar for underground operation according to claim 8, characterized in that: The top and bottom of the card block (13) are both arranged in an inclined plane, and the card block (13) is adapted to the card slot (14).

10. A conductive mechanical jar for underground operation according to claim 3, characterized in that: The top of the second shell (5) is located inside the shock groove (9), and the outer wall of the second shell (5) is in contact with the elastic gasket (1809).

Images