While-drilling jar for petroleum drilling and implementation method

Abstract

The invention discloses a while-drilling jar for petroleum drilling and an implementation method, and belongs to the technical field of petroleum drilling tools, the while-drilling jar comprises an outer pipe, a plurality of arc-shaped pieces are arranged on the surface of the outer pipe, a jar rod is arranged in the outer pipe, a connecting rod is inserted into the bottom end of the jar rod, and a fixing rod is arranged at the bottom end of the connecting rod; a convenient heat dissipation assembly is installed on the surface of the upper end of the outer pipe, a limiting locking assembly is arranged at the bottom end of an arc-shaped piece, buffering and damping assemblies are symmetrically installed on the surface of the fixing rod, and a jarring head installation assembly is installed at the bottom end of the fixing rod. By arranging the jar head mounting assembly and adopting modular design, a damaged jar head can be disassembled, assembled and replaced, maintenance is facilitated, different operation requirements are met, the applicability of the equipment is improved, the use quality of the equipment is guaranteed, the working stability is improved, a weak buffer spring can be replaced, the use cost of the equipment is reduced, and the service life of the equipment is prolonged. And the disassembly and assembly convenience of the buffer spring is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling tools, and in particular relates to a drilling jar for oil drilling and an implementation method thereof. Background Art

[0002] A drilling jar is a downhole unstuck tool connected to the drill string for drilling operations. It is usually connected between the drill collar and the drill pipe, or on the top of the drill collar, or at the third drill pipe above the "neutral point" of the drill string (i.e. the part of the drill collar that is not compressed or pulled after being pressurized). In deep wells, offshore drilling, especially directional well drilling, a drilling jar is often placed in the lower drill assembly so that once the lower drill assembly is stuck, the jar can be operated to unstuck by shocking upward or downward.

[0003] Chinese patent application No. 202322946834.9 discloses a drilling jar for oil drilling, comprising an outer tube, a first retaining ring is fixedly connected to the top of the inner surface of the outer tube, a second retaining ring is fixedly connected to the inner surface of the outer tube, a shock absorbing chamber is opened at the bottom of the inner surface of the outer tube, an arc-shaped piece is movably connected to the top of the outer surface of the outer tube, connecting pieces are fixedly connected to the outer surfaces of the arc-shaped pieces on both sides, a jar rod is movably connected to the inner surface of the outer tube, a first spring is movably connected to the middle of the outer surface of the jar rod, a connecting rod is movably connected to the bottom of the inner surface of the jar rod, a fixed rod is movably connected to the bottom of the outer surface of the connecting rod, and a jar head is fixedly connected to the front of the bottom of the fixed rod, which is beneficial to improving the stability of the device, reducing the maintenance cost of the equipment, and is beneficial to increasing the operating time of the equipment and reducing the failure rate of the equipment.

[0004] The above-mentioned patent has the following problems:

[0005] 1. The inconvenience of disassembling and assembling the shock head makes it difficult to replace and repair the equipment, which affects the jamming effect after long-term use, reduces the quality of equipment use, and cannot ensure the installation strength of the shock head, affecting the stability of equipment use;

[0006] 2. When the fixed rod is subjected to force and vibration, long-term use will cause the spring to become weak, affecting the performance of the equipment, poor working stability, and difficulty in replacing the spring, affecting the use effect;

[0007] 3. The equipment cannot be cooled during high-intensity operation, which shortens the service life of the jar, affects the work quality, and increases the cost of use;

[0008] 4. The equipment installation and positioning effect is not good, and the threaded rod is prone to sliding, which affects the installation strength, resulting in unstable equipment use and affecting the card release effect. Summary of the invention

[0009] In order to solve the problems raised in the above background technology, the present invention provides a drilling jar for oil well drilling and an implementation method thereof, which has the characteristics of modular design, convenient maintenance, good heat dissipation effect and long service life.

[0010] The invention also provides a drilling jar for oil drilling and an implementation method thereof.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drilling jar for oil drilling, comprising an outer tube, a plurality of arc-shaped sheets are arranged on the surface of the outer tube, a jar rod is arranged inside the outer tube, a connecting rod is inserted at the bottom end of the jar rod, a fixing rod is arranged at the bottom end of the connecting rod, a convenient heat dissipation component is installed on the upper end surface of the outer tube, a limited locking component is arranged at the bottom end of the arc-shaped sheet, a buffer shock-absorbing component is symmetrically installed on the surface of the fixing rod, and a jar head installation component is installed at the bottom end of the fixing rod.

[0012] Further in the present invention; the jarring head installation assembly includes a threaded cavity, a limiting device, a jarring head body, a threaded column, an abutment block and a compression spring, wherein a threaded cavity is opened at the inner bottom end of the fixing rod, a compression spring is arranged inside the threaded cavity, an abutment block is arranged at the bottom end of the compression spring, a threaded column is arranged at the bottom end of the threaded cavity, the jarring head body is fixed to the bottom end of the threaded column, and a limiting device is arranged on the surface of the jarring head body.

[0013] Further in the present invention; the limiting device includes a positioning tooth, a guide seat, a pull rod, a limiting spring and a gear ring, wherein a gear ring is fixed to the bottom end surface of the fixing rod, a guide seat is provided on the surface of the shock head body corresponding to the gear ring, a limiting spring is fixed to the inner bottom end of the guide seat, a positioning tooth is provided at the upper end of the limiting spring, and a pull rod is provided on one side of the positioning tooth.

[0014] Further in the present invention; the buffer shock absorbing assembly includes a buffer spring, a rotating cover, a square rod, a threaded base, a threaded hole, a mounting block and a buffer device, wherein the mounting blocks are symmetrically arranged on the surface of the fixed rod, the buffer device is arranged in the middle of the mounting block, threaded holes are symmetrically opened at both ends of the mounting block, a threaded base is arranged inside the threaded hole, a buffer spring is installed on the upper end of the threaded base, a rotating cover is installed on the top end of the buffer spring, and a square rod is arranged on the bottom end surface of the rotating cover corresponding to the threaded base.

[0015] Further in the present invention; the buffer device includes a locking bolt, a movable block, a mounting hole, a damping block, a fixed block and a fixed spring, wherein the mounting block is provided with a mounting hole, the mounting hole is provided with a locking bolt, the mounting block is symmetrically fixed on both sides of the inside of the mounting block, a fixed spring is installed on one side of the fixed block, a movable block is provided on one side of the fixed spring, and a damping block is provided on the surface of the movable block.

[0016] In the present invention, the interior of the mounting block is provided with a mounting screw hole corresponding to the locking bolt, and the interior of the threaded base is provided with a square socket corresponding to the square rod.

[0017] Further in the present invention; the convenient heat dissipation component includes an annular heat conducting plate, heat dissipation fins, a splicing seat, a mounting groove and a splicing device, wherein an annular heat conducting plate is symmetrically arranged on the upper end of the surface of the outer tube, a plurality of heat dissipation fins are fixed on the surface of the annular heat conducting plate, splicing seats are symmetrically arranged on both sides of the annular heat conducting plate, a mounting groove is arranged inside the splicing seat, and a splicing device is arranged inside the mounting groove.

[0018] Further in the present invention; the splicing device includes a limit baffle, an abutment spring, a limit block and an insertion rod, wherein the inside of the installation groove is penetrated by the insertion rod, one end of the insertion rod is fixed with the limit baffle, the inside of the insertion rod is installed with an abutment spring, and the upper end of the abutment spring is provided with a limit block.

[0019] Further in the present invention; the limit locking assembly includes a clamping block, a hook, a damping shaft, a handle, a pull ring, a T-shaped socket, a threaded rod and a support rod, wherein a support rod is hinged on one side of the arc-shaped piece, a threaded rod is connected inside the support rod, a T-shaped socket is fixed on one side of the bottom end of the support rod, a damping shaft is provided on one side of the T-shaped socket, a handle is connected on one side of the damping shaft, a pull ring is movably connected to the surface of the handle through a pin shaft, a clamping block is inserted into the inside of the T-shaped socket, and a hook is installed on one side of the clamping block corresponding to the pull ring.

[0020] Further in the present invention; a method for implementing a drilling jar for oil drilling comprises the following steps:

[0021] Step 1: Sleeve the arc-shaped piece on the surface of the outer tube and connect and install it through bolts. After installation, the use length of the threaded rod can be adjusted to ensure stable support for the outer tube. Turn the threaded rod to screw it into the inside of the support rod to adjust the length. After determining the use length of the threaded rod, insert the clamping block into the inside of the T-shaped holder and pass through the slot on one side of the support rod to abut against the surface of the threaded rod. At this time, turn the handle along the damping shaft, and turn the pull ring to overlap the upper end of the hook, and then turn the handle in the opposite direction along the damping shaft to reset it. At this time, the pull ring presses down the hook and limits the clamping block to ensure the abutment effect of the clamping block on the threaded rod, prevent the threaded rod from loosening, improve the use quality of the equipment, and ensure the installation strength;

[0022] Step 2: When the equipment is unblocked, the shock rod vibrates up and down and transmits the vibration through the connecting rod, causing the fixed rod and the shock head body at the bottom end to vibrate. After long-term use, the shock head body needs to be replaced. When replacing the shock head body for installation, insert the threaded column into the threaded cavity and screw it. The threaded column abuts against the bottom end of the abutment block and compresses the compression spring to ensure that the installed threaded column is subjected to the elastic force of the compression spring and needs to overcome the elastic force to rotate, thereby improving the installation strength and preventing loosening. During the installation of the shock head body, the pull rod can be pressed downward to make the positioning tooth retract into the inside of the guide seat. After determining that the shock head body is installed, the pull rod is released to reset the limit spring and push the positioning tooth to be plugged into the bottom end of the gear ring, thereby ensuring the limiting effect of the shock head body, further improving the installation strength, and ensuring the stability of the equipment.

[0023] Step 3: When the fixed rod is used for a long time, the buffer springs on both sides thereof will become weak, resulting in poor vibration effect and affecting the quality of card release. The buffer spring can be replaced by modular design. The rotating cover is pressed to insert the square rod at its bottom into the square hole inside the threaded base. Then the rotating cover is turned to drive the threaded base to rotate and disengage from the threaded hole. Then the weak buffer springs are replaced in turn, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer spring, and improving the use quality of the equipment. When the fixed rod vibrates, the use position of the damping block can be adjusted to optimize the shock structure. The locking bolt is turned to insert into the mounting hole for installation. At this time, the locking bolt abuts against the surfaces of the two sets of movable blocks and pushes them to move. The damping block on one side of the movable block extends out of the mounting block and contacts the surface of the outer tube to increase the damping force when the fixed rod moves. The fixed spring is provided with force compression to ensure the use effect of the damping block, ensure that the equipment can absorb excess vibration, and increase the service life of the equipment.

[0024] Step 4: Before using the outer tube, an annular heat conducting plate can be installed on its surface, the joint seats on the surfaces of the two sets of annular heat conducting plates are connected, and then the rod is inserted through the installation slot. At this time, the limit stop is subjected to force to compress the abutment spring. When the limit stop is attached to the surface of the joint seat, the abutment spring resets to push the limit stop upward and clamps on one side of the joint seat, thereby ensuring the convenience of splicing the two sets of joint seats, improving the installation efficiency of the annular heat conducting plate, and ensuring that when the outer tube is in use, the heat generated inside can be conducted to the heat dissipation fins through the annular heat conducting plate for heat dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention provides a jar head installation assembly and adopts a modular design to disassemble and replace a damaged jar head, which is convenient for maintenance and adapting to different operating requirements, improves the applicability of the equipment, ensures the quality of equipment use, and improves the stability of work.

[0027] 2. The present invention provides a buffer shock-absorbing assembly to replace a weak buffer spring, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer spring, improving the use quality of the equipment, and absorbing excess vibration through the friction of the damping block, thereby increasing the service life of the equipment.

[0028] 3. The present invention provides a convenient heat dissipation component to ensure that when the outer tube is in use, the heat generated inside can be conducted to the heat dissipation fins through the annular heat conduction plate for heat dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

[0029] 4. The present invention sets a limit locking assembly to limit the threaded rod and prevent it from loosening, thereby improving the stability of equipment installation, ensuring the strength of use, and improving the quality of equipment use. The equipment has a simple structure, is easy to use, saves human resources, and improves the convenience of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the jarring head mounting assembly of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the limiting device of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the buffer shock absorbing component of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the buffer device of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the convenient heat dissipation component of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the splicing device of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the limit locking assembly of the present invention.

[0038] In the figure: 1. Convenient heat dissipation component; 11. Annular heat conducting plate; 12. Heat dissipation fins; 13. Joint seat; 14. Mounting groove; 15. Joint device; 151. Limit baffle; 152. Abutment spring; 153. Limit block; 154. Insert rod; 2. Arc sheet; 3. Limit locking component; 31. Pressing block; 32. Hook; 33. Damping shaft; 34. Handle; 35. Pull ring; 36. T-type card seat; 37. Threaded rod; 38. Support rod; 4. Outer tube; 5. Shock rod; 6. Connecting rod; 7. Fixing rod; 8. Buffer shock absorption component; 81. Buffer spring Spring; 82, rotating cover; 83, square rod; 84, threaded base; 85, threaded hole; 86, mounting block; 87, buffer device; 871, locking bolt; 872, movable block; 873, mounting hole; 874, damping block; 875, fixed block; 876, fixed spring; 9, jar head mounting assembly; 91, threaded cavity; 92, limiting device; 921, positioning tooth; 922, guide seat; 923, pull rod; 924, limiting spring; 925, gear ring; 93, jar head body; 94, threaded column; 95, abutment block; 96, compression spring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] See also Figure 1-8 The present invention provides the following technical solutions: a drilling jar for oil drilling, comprising an outer tube 4, a plurality of arc-shaped sheets 2 are arranged on the surface of the outer tube 4, a jar rod 5 is arranged inside the outer tube 4, a connecting rod 6 is inserted at the bottom end of the jar rod 5, a fixing rod 7 is arranged at the bottom end of the connecting rod 6, a convenient heat dissipation component 1 is installed on the upper end surface of the outer tube 4, a limited locking component 3 is arranged at the bottom end of the arc-shaped sheet 2, a buffer shock absorbing component 8 is symmetrically installed on the surface of the fixing rod 7, and a jar head installation component 9 is installed at the bottom end of the fixing rod 7.

[0042] Specifically, the jarring head mounting assembly 9 includes a threaded cavity 91, a limiting device 92, a jarring head body 93, a threaded column 94, an abutment block 95 and a compression spring 96, wherein a threaded cavity 91 is provided at the inner bottom end of the fixing rod 7, a compression spring 96 is arranged inside the threaded cavity 91, an abutment block 95 is arranged at the bottom end of the compression spring 96, a threaded column 94 is arranged at the bottom end of the threaded cavity 91, a jarring head body 93 is fixed to the bottom end of the threaded column 94, and a limiting device 92 is arranged on the surface of the jarring head body 93.

[0043] By adopting the above technical solution, when the equipment is unstuck, the shock rod 5 vibrates up and down and transmits the vibration through the connecting rod 6, causing the fixed rod 7 and the shock head body 93 at the bottom end to vibrate. After long-term use, the shock head body 93 needs to be replaced. When replacing the shock head body 93 for installation, the threaded column 94 is inserted into the threaded cavity 91 and screwed. The threaded column 94 abuts against the bottom end of the abutment block 95 and compresses the clamping spring 96 to ensure that the installed threaded column 94 is subject to the elastic force of the clamping spring 96 and needs to overcome the elastic force to rotate, thereby improving the installation strength and preventing loosening.

[0044] Specifically, the limiting device 92 includes a positioning tooth 921, a guide seat 922, a pull rod 923, a limiting spring 924 and a gear ring 925, wherein the gear ring 925 is fixed to the bottom end surface of the fixing rod 7, a guide seat 922 is provided on the surface of the shock head body 93 corresponding to the gear ring 925, a limiting spring 924 is fixed to the inner bottom end of the guide seat 922, a positioning tooth 921 is provided at the upper end of the limiting spring 924, and a pull rod 923 is provided on one side of the positioning tooth 921.

[0045] By adopting the above-mentioned technical scheme, during the installation process of the jarring head body 93, the pull rod 923 can be pressed downward so that the positioning tooth 921 is retracted into the interior of the guide seat 922. After it is determined that the installation of the jarring head body 93 is completed, the pull rod 923 is released so that the limiting spring 924 is reset and pushes the positioning tooth 921 to be inserted into the bottom end of the gear ring 925, thereby ensuring the limiting effect of the jarring head body 93, further improving the installation strength, and ensuring the stability of the equipment.

[0046] When the present embodiment is in use: when the device is unblocked, the shock rod 5 vibrates up and down and transmits the vibration through the connecting rod 6 to make the fixing rod 7 and the shock head body 93 at the bottom end thereof vibrate. After long-term use, the shock head body 93 needs to be replaced. When the shock head body 93 is replaced for installation, the threaded column 94 is inserted into the threaded cavity 91 and screwed. The threaded column 94 abuts against the bottom end of the abutment block 95 and compresses the compression spring 96. It is ensured that the threaded column 94 after installation is subjected to the elastic force of the compression spring 96 and needs to overcome the elastic force to rotate, thereby improving the installation strength and preventing the occurrence of looseness.

[0047] During the installation of the jarring head body 93, the pull rod 923 can be pressed downward so that the positioning tooth 921 is retracted into the interior of the guide seat 922. After it is determined that the installation of the jarring head body 93 is completed, the pull rod 923 is released so that the limiting spring 924 is reset and pushes the positioning tooth 921 to be inserted into the bottom end of the gear ring 925, thereby ensuring the limiting effect of the jarring head body 93, further improving the installation strength, and ensuring the stability of the equipment.

[0048] Example 2

[0049] The present embodiment is different from the embodiment 1 in that: specifically, the buffer shock absorbing assembly 8 comprises a buffer spring 81, a rotating cover 82, a square rod 83, a threaded base 84, a threaded hole 85, a mounting block 86 and a buffer device 87, wherein mounting blocks 86 are symmetrically arranged on the surface of the fixed rod 7, a buffer device 87 is arranged in the middle of the mounting block 86, threaded holes 85 are symmetrically provided at both ends of the mounting block 86, a threaded base 84 is arranged inside the threaded hole 85, a buffer spring 81 is installed on the upper end of the threaded base 84, a rotating cover 82 is installed on the top end of the buffer spring 81, and a square rod 83 is arranged on the bottom end surface of the rotating cover 82 corresponding to the threaded base 84.

[0050] By adopting the above technical solution, when the fixed rod 7 is used for a long time, the buffer springs 81 on both sides thereof will become weak, resulting in poor vibration effect and affecting the quality of card release. The buffer spring 81 can be replaced by adopting a modular design. The rotating cover 82 is pressed to insert the square rod 83 at its bottom into the square hole inside the threaded base 84. The rotating cover 82 is then rotated to drive the threaded base 84 to rotate and disengage from the threaded hole 85. The weak buffer springs 81 are then replaced in turn, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer spring 81, and improving the use quality of the equipment.

[0051] Specifically, the buffer device 87 includes a locking bolt 871, a movable block 872, a mounting hole 873, a damping block 874, a fixed block 875 and a fixed spring 876, wherein the mounting block 86 has a mounting hole 873 extending therethrough, the mounting hole 873 has a locking bolt 871 disposed therein, the fixed blocks 875 are symmetrically fixed on both sides of the mounting block 86, a fixed spring 876 is mounted on one side of the fixed block 875, a movable block 872 is disposed on one side of the fixed spring 876, and a damping block 874 is disposed on the surface of the movable block 872.

[0052] By adopting the above technical solution, when the fixed rod 7 vibrates, the use position of the damping block 874 can be adjusted to optimize the shock structure, and the locking bolt 871 is rotated to insert into the mounting hole 873 for installation. At this time, the locking bolt 871 abuts against the surfaces of the two groups of movable blocks 872 and pushes them to move. The damping block 874 on one side of the movable block 872 extends out of the mounting block 86 and contacts the surface of the outer tube 4 to increase the damping force when the fixed rod 7 moves, and the fixed spring 876 is provided to be compressed to ensure the use effect of the damping block 874, ensure that the equipment can absorb excess vibration, and increase the service life of the equipment.

[0053] Specifically, a mounting screw hole is provided inside the fixing rod 7 corresponding to the locking bolt 871 , and a square plug hole is provided inside the threaded base 84 corresponding to the square rod 83 .

[0054] By adopting the above technical solution, the convenience of disassembly and assembly of the threaded base 84 is ensured, and the stability of installation of the locking bolt 871 is ensured.

[0055] When the present embodiment is in use: when the fixed rod 7 is used for a long time, the buffer springs 81 on both sides thereof will become weak, resulting in poor vibration effect and affecting the quality of card release. The buffer springs 81 can be replaced by adopting a modular design. The rotating cover 82 is pressed to insert the square rod 83 at the bottom into the square hole inside the threaded base 84. Then, the rotating cover 82 is rotated to drive the threaded base 84 to rotate and disengage from the threaded hole 85. Then, the weak buffer springs 81 are replaced in turn, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer springs 81, and improving the use quality of the equipment.

[0056] When the fixed rod 7 vibrates, the use position of the damping block 874 can be adjusted to optimize the shock structure. The locking bolt 871 is rotated to insert into the mounting hole 873 for installation. At this time, the locking bolt 871 abuts against the surfaces of the two sets of movable blocks 872 and pushes them to move. The damping block 874 on one side of the movable block 872 extends out of the mounting block 86 and contacts the surface of the outer tube 4 to increase the damping force when the fixed rod 7 moves. The fixed spring 876 is compressed to ensure the use effect of the damping block 874, ensure that the equipment can absorb excess vibration, and increase the service life of the equipment.

[0057] Example 3

[0058] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that: specifically, the convenient heat dissipation component 1 includes an annular heat conducting plate 11, heat dissipation fins 12, a splicing seat 13, a mounting groove 14 and a splicing device 15, wherein an annular heat conducting plate 11 is symmetrically arranged on the upper end of the surface of the outer tube 4, a plurality of heat dissipation fins 12 are fixed to the surface of the annular heat conducting plate 11, splicing seats 13 are symmetrically arranged on both sides of the annular heat conducting plate 11, a mounting groove 14 is arranged inside the splicing seat 13, and a splicing device 15 is arranged inside the mounting groove 14.

[0059] By adopting the above technical solution, an annular heat conducting plate 11 can be installed on the surface of the outer tube 4 before it is used, ensuring that when the outer tube 4 is in use, the heat generated inside it can be conducted to the heat dissipation fins 12 through the annular heat conducting plate 11 for dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

[0060] Specifically, the splicing device 15 includes a limit baffle 151, an abutment spring 152, a limit block 153 and an insertion rod 154, wherein the insertion rod 154 is arranged through the interior of the installation groove 14, one end of the insertion rod 154 is fixed with the limit baffle 151, the interior of the insertion rod 154 is installed with an abutment spring 152, and the upper end of the abutment spring 152 is provided with a limit block 153.

[0061] By adopting the above technical solution, the splicing seats 13 on the surfaces of the two groups of annular heat conducting plates 11 are docked, and then the insert rod 154 is passed through the installation groove 14. At this time, the limit stop block 153 is subjected to force to compress the abutment spring 152. When the limit stop plate 151 is attached to the surface of the splicing seat 13, the abutment spring 152 is reset to push the limit stop block 153 to move up and be clamped on one side of the splicing seat 13, thereby ensuring the convenience of splicing the two groups of splicing seats 13 and improving the installation efficiency of the annular heat conducting plate 11.

[0062] When this embodiment is in use: before the outer tube 4 is used, an annular heat conducting plate 11 can be installed on its surface, the splicing seats 13 on the surfaces of the two groups of annular heat conducting plates 11 are connected, and then the insertion rod 154 is passed through the installation groove 14. At this time, the limit stopper 153 is subjected to force to compress the abutment spring 152. When the limit stopper 151 is attached to the surface of the splicing seat 13, the abutment spring 152 is reset to push the limit stopper 153 to move up and be clamped on one side of the splicing seat 13, thereby ensuring the convenience of splicing the two groups of splicing seats 13, improving the installation efficiency of the annular heat conducting plate 11, and ensuring that when the outer tube 4 is in use, the heat generated inside it can be conducted to the heat dissipation fins 12 through the annular heat conducting plate 11 for heat dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

[0063] Example 4

[0064] The difference between this embodiment and the above-mentioned embodiment lies in that: specifically, the limit locking assembly 3 includes a clamping block 31, a hook 32, a damping shaft 33, a handle 34, a pull ring 35, a T-shaped holder 36, a threaded rod 37 and a support rod 38, wherein a support rod 38 is hinged on one side of the arc-shaped piece 2, a threaded rod 37 is connected inside the support rod 38, a T-shaped holder 36 is fixed on one side of the bottom end of the support rod 38, a damping shaft 33 is provided on one side of the T-shaped holder 36, a handle 34 is connected on one side of the damping shaft 33, a pull ring 35 is movably connected to the surface of the handle 34 through a pin shaft, a clamping block 31 is inserted into the inside of the T-shaped holder 36, and a hook 32 is installed on one side of the clamping block 31 corresponding to the pull ring 35.

[0065] When the present embodiment is in use, the arc-shaped sheet 2 is sleeved on the surface of the outer tube 4 and connected and installed by bolts. After installation, the use length of the threaded rod 37 can be adjusted to ensure stable support for the outer tube 4. The threaded rod 37 is rotated to screw it into the interior of the support rod 38 to adjust the length. After determining the use length of the threaded rod 37, the clamping block 31 is inserted into the interior of the T-shaped holder 36 and passes through the slot on one side of the support rod 38 to abut against the surface of the threaded rod 37. At this time, the handle 34 is rotated along the damping shaft 33, and the pull ring 35 is rotated to overlap the upper end of the hook 32, and then the handle 34 is rotated in the opposite direction along the damping shaft 33 to reset it. At this time, the pull ring 35 presses down the hook 32 and limits the clamping block 31 to ensure the abutment effect of the clamping block 31 on the threaded rod 37, prevent the threaded rod 37 from loosening, improve the use quality of the equipment, and ensure the installation strength.

[0066] The structure and use principle of the arc-shaped piece 2, outer tube 4, jar rod 5, connecting rod 6 and fixing rod 7 in the present invention have been disclosed in a drilling jar for oil drilling disclosed in Chinese patent application No. 202322946834.9.

[0067] The working principle and use process of the present invention are as follows: when the present invention is in use, the arc-shaped sheet 2 is sleeved on the surface of the outer tube 4 and connected and installed by bolts. After installation, the use length of the threaded rod 37 can be adjusted to ensure stable support for the outer tube 4. The threaded rod 37 is rotated to screw it into the interior of the support rod 38 to adjust the length. After determining the use length of the threaded rod 37, the clamping block 31 is inserted into the interior of the T-shaped holder 36 and passes through the slot on one side of the support rod 38 to abut against the surface of the threaded rod 37. At this time, the handle 34 is rotated along the damping shaft 33, and the pull ring 35 is rotated to overlap the upper end of the hook 32, and then the handle 34 is rotated in the opposite direction along the damping shaft 33 to reset it. At this time, the pull ring 35 presses down the hook 32 and limits the clamping block 31, ensuring the abutment effect of the clamping block 31 on the threaded rod 37, preventing the threaded rod 37 from loosening, improving the use quality of the equipment, and ensuring the installation strength.

[0068] When the device is unblocked, the shock rod 5 vibrates up and down and transmits the vibration through the connecting rod 6, so that the fixing rod 7 and the shock head body 93 at the bottom end thereof vibrate. After long-term use, the shock head body 93 needs to be replaced. When replacing the shock head body 93 for installation, the threaded column 94 is inserted into the threaded cavity 91 and screwed. The threaded column 94 abuts against the bottom end of the abutment block 95 and compresses the compression spring 96, ensuring that the threaded column 94 after installation is subjected to the elastic force of the compression spring 96 and needs to overcome the elastic force to rotate, thereby improving the installation strength and preventing loosening.

[0069] During the installation of the jar head body 93, the pull rod 923 can be pressed downward to make the positioning tooth 921 retract into the guide seat 922. After the installation of the jar head body 93 is completed, the pull rod 923 is released to make the limit spring 924 reset and push the positioning tooth 921 to be inserted into the bottom end of the gear ring 925, thereby ensuring the limiting effect of the jar head body 93, further improving the installation strength, and ensuring the stability of the equipment.

[0070] When the fixed rod 7 is used for a long time, the buffer springs 81 on both sides thereof will become weak, resulting in poor vibration effect and affecting the quality of card release. The buffer spring 81 can be replaced by adopting a modular design. The rotating cover 82 is pressed to insert the square rod 83 at the bottom into the square hole inside the threaded base 84. Then, the rotating cover 82 is rotated to drive the threaded base 84 to rotate and disengage from the threaded hole 85. Then, the weak buffer springs 81 are replaced in turn, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer spring 81, and improving the use quality of the equipment.

[0071] When the fixed rod 7 vibrates, the use position of the damping block 874 can be adjusted to optimize the shock structure, and the locking bolt 871 is rotated to insert into the mounting hole 873 for installation. At this time, the locking bolt 871 abuts against the surfaces of the two sets of movable blocks 872 and pushes them to move. The damping block 874 on one side of the movable block 872 extends out of the mounting block 86 and contacts the surface of the outer tube 4 to increase the damping force when the fixed rod 7 moves. The fixed spring 876 is compressed to ensure the use effect of the damping block 874, ensure that the equipment can absorb excess vibration, and increase the service life of the equipment.

[0072] Before the outer tube 4 is used, an annular heat conducting plate 11 can be installed on its surface, and the splicing seats 13 on the surfaces of the two groups of annular heat conducting plates 11 are connected, and then the insertion rod 154 is passed through the installation groove 14. At this time, the limit stopper 153 is subjected to force to compress the abutment spring 152. When the limit stopper 151 is attached to the surface of the splicing seat 13, the abutment spring 152 is reset to push the limit stopper 153 to move up and be clamped on one side of the splicing seat 13, thereby ensuring the convenience of splicing the two groups of splicing seats 13, improving the installation efficiency of the annular heat conducting plate 11, and ensuring that when the outer tube 4 is in use, the heat generated inside it can be conducted to the heat dissipation fins 12 through the annular heat conducting plate 11 for heat dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling jar for oil well drilling, comprising an outer tube (4), a plurality of arc-shaped sheets (2) are arranged on the surface of the outer tube (4), a jar rod (5) is arranged inside the outer tube (4), a connecting rod (6) is inserted at the bottom end of the jar rod (5), and a fixing rod (7) is arranged at the bottom end of the connecting rod (6), characterized in that: A convenient heat dissipation component (1) is installed on the upper surface of the outer tube (4), a limited locking component (3) is arranged at the bottom end of the arc-shaped sheet (2), a buffer shock absorbing component (8) is symmetrically installed on the surface of the fixing rod (7), and a shock head installation component (9) is installed at the bottom end of the fixing rod (7).

2. A drilling jar for oil drilling according to claim 1, characterized in that: The jar head mounting assembly (9) comprises a threaded cavity (91), a limiting device (92), a jar head body (93), a threaded column (94), an abutment block (95) and a compression spring (96), wherein the inner bottom end of the fixing rod (7) is provided with a threaded cavity (91), a compression spring (96) is arranged inside the threaded cavity (91), an abutment block (95) is arranged at the bottom end of the compression spring (96), a threaded column (94) is arranged at the bottom end of the threaded cavity (91), the jar head body (93) is fixed at the bottom end of the threaded column (94), and the limiting device (92) is arranged on the surface of the jar head body (93).

3. A drilling jar for oil well drilling according to claim 2, characterized in that: The limiting device (92) includes a positioning tooth (921), a guide seat (922), a pull rod (923), a limiting spring (924) and a toothed ring (925), wherein the toothed ring (925) is fixed to the bottom surface of the fixing rod (7), a guide seat (922) is provided on the surface of the shock head body (93) corresponding to the toothed ring (925), a limiting spring (924) is fixed to the inner bottom end of the guide seat (922), a positioning tooth (921) is provided at the upper end of the limiting spring (924), and a pull rod (923) is provided on one side of the positioning tooth (921).

4. The drilling jar for oil well drilling according to claim 1, characterized in that: The buffer shock absorbing assembly (8) comprises a buffer spring (81), a rotating cover (82), a square rod (83), a threaded base (84), a threaded hole (85), a mounting block (86) and a buffer device (87), wherein the mounting block (86) is symmetrically arranged on the surface of the fixed rod (7), the buffer device (87) is arranged in the middle of the mounting block (86), the threaded holes (85) are symmetrically opened at both ends of the mounting block (86), the threaded base (84) is arranged inside the threaded hole (85), the buffer spring (81) is installed at the upper end of the threaded base (84), the rotating cover (82) is installed at the top end of the buffer spring (81), and the square rod (83) is arranged on the bottom surface of the rotating cover (82) corresponding to the threaded base (84).

5. A drilling jar for oil well drilling according to claim 4, characterized in that: The buffer device (87) comprises a locking bolt (871), a movable block (872), a mounting hole (873), a damping block (874), a fixed block (875) and a fixed spring (876), wherein the mounting block (86) is provided with a mounting hole (873) running through the inside, the mounting hole (873) is provided with a locking bolt (871), the inside of the mounting block (86) is symmetrically fixed with fixed blocks (875) on both sides of the inside, a fixed spring (876) is installed on one side of the fixed block (875), a movable block (872) is provided on one side of the fixed spring (876), and a damping block (874) is provided on the surface of the movable block (872).

6. A drilling jar for oil well drilling according to claim 5, characterized in that: The fixing rod (7) is provided with a mounting screw hole inside corresponding to the locking bolt (871), and the threaded base (84) is provided with a square insertion hole inside corresponding to the square rod (83).

7. The drilling jar for oil well drilling according to claim 1, characterized in that: The convenient heat dissipation component (1) comprises an annular heat conducting plate (11), heat dissipation fins (12), a splicing seat (13), a mounting groove (14) and a splicing device (15), wherein the upper end of the surface of the outer tube (4) is symmetrically provided with an annular heat conducting plate (11), a plurality of heat dissipation fins (12) are fixed to the surface of the annular heat conducting plate (11), the splicing seats (13) are symmetrically provided on both sides of the annular heat conducting plate (11), the interior of the splicing seat (13) is provided with a mounting groove (14), and the interior of the mounting groove (14) is provided with a splicing device (15).

8. A drilling jar for oil well drilling according to claim 7, characterized in that: The splicing device (15) comprises a limit baffle (151), an abutting spring (152), a limit block (153) and an insertion rod (154), wherein the installation groove (14) is provided with an insertion rod (154) running through the interior thereof, one end of the insertion rod (154) is fixed with the limit baffle (151), an abutting spring (152) is installed inside the insertion rod (154), and the limit block (153) is provided at the upper end of the abutting spring (152).

9. The drilling jar for oil well drilling according to claim 1, characterized in that: The limit locking assembly (3) comprises a clamping block (31), a hook (32), a damping shaft (33), a handle (34), a pull ring (35), a T-shaped clamping seat (36), a threaded rod (37) and a support rod (38), wherein one side of the arc-shaped piece (2) is hinged with a support rod (38), the inside of the support rod (38) is connected with a threaded rod (37), one side of the bottom end of the support rod (38) is fixed with a T-shaped clamping seat (36), one side of the T-shaped clamping seat (36) is provided with a damping shaft (33), one side of the damping shaft (33) is connected with a handle (34), the surface of the handle (34) is movably connected with a pull ring (35) via a pin shaft, the inside of the T-shaped clamping seat (36) is plugged with a clamping block (31), and one side of the clamping block (31) is provided with a hook (32) corresponding to the pull ring (35).

10. A method for implementing a drilling jar for oil drilling according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: The arc-shaped sheet (2) is sleeved on the surface of the outer tube (4) and connected and installed by bolts. After installation, the use length of the threaded rod (37) can be adjusted to ensure stable support for the outer tube (4). The threaded rod (37) is rotated to screw into the inside of the support rod (38) to adjust the length. After determining the use length of the threaded rod (37), the pressing block (31) is inserted into the inside of the T-shaped holder (36) and passes through the slot on one side of the support rod (38) to abut against the threaded rod (37). The handle (34) is rotated along the damping shaft (33) at this time, and the pull ring (35) is rotated to overlap the upper end of the hook (32), and then the handle (34) is rotated in the opposite direction along the damping shaft (33) to reset it. At this time, the pull ring (35) presses down the hook (32) and limits the pressing block (31), ensuring the abutment effect of the pressing block (31) on the threaded rod (37), preventing the threaded rod (37) from loosening, improving the use quality of the equipment, and ensuring the installation strength; Step 2: When the device is unblocked, the shock rod (5) vibrates up and down and transmits the vibration through the connecting rod (6), causing the fixed rod (7) and the shock head body (93) at the bottom to vibrate. After long-term use, the shock head body (93) needs to be replaced. When replacing the shock head body (93) for installation, the threaded column (94) is inserted into the threaded cavity (91) and screwed. The threaded column (94) abuts against the bottom end of the abutment block (95) and causes the compression spring (96) to be compressed, ensuring that the installed threaded column (94) is elastically supported by the compression spring (96). The force is applied, and the elastic force needs to be overcome before the rotation can be performed, thereby improving the installation strength and preventing the occurrence of looseness. During the installation process of the jarring head body (93), the pull rod (923) can be pressed downward so that the positioning tooth (921) is received in the guide seat (922). After the installation of the jarring head body (93) is completed, the pull rod (923) is released so that the limiting spring (924) is reset and the positioning tooth (921) is inserted into the bottom end of the gear ring (925), thereby ensuring the limiting effect of the jarring head body (93), further improving the installation strength, and ensuring the stability of the equipment. Step 3: When the fixed rod (7) is used for a long time, the buffer springs (81) on both sides thereof will become weak, resulting in poor vibration effect and affecting the quality of card release. The buffer spring (81) can be replaced by adopting a modular design. The rotating cover (82) is pressed to insert the square rod (83) at the bottom into the square hole inside the threaded base (84). Then, the rotating cover (82) is rotated to drive the threaded base (84) to rotate and disengage from the threaded hole (85). Then, the weak buffer springs (81) are replaced in turn, thereby reducing the use cost of the equipment, ensuring the convenience of disassembly and assembly of the buffer spring (81), and improving the use quality of the equipment. When the fixed rod (7) vibrates, the use position of the damping block (874) can be adjusted to optimize the shock structure, and the locking bolt (871) is rotated to insert into the mounting hole (873) for installation. At this time, the locking bolt (871) abuts against the surfaces of the two sets of movable blocks (872) and pushes them to move. The damping block (874) on one side of the movable block (872) extends out of the mounting block (86) and contacts the surface of the outer tube (4) to increase the damping force when the fixed rod (7) moves. The fixed spring (876) is provided to be compressed to ensure the use effect of the damping block (874), ensure that the device can absorb excess vibration, and increase the service life of the device. Step 4: Before the outer tube (4) is used, an annular heat conducting plate (11) can be installed on its surface, and the splicing seats (13) on the surfaces of the two groups of annular heat conducting plates (11) are connected, and then the insertion rod (154) is passed through the installation groove (14). At this time, the limit stopper (153) is subjected to force to compress the abutment spring (152). When the limit stopper (151) is attached to the surface of the splicing seat (13), the abutment spring (152) is reset to push the limit stopper (153) to move up and be clamped on one side of the splicing seat (13), thereby ensuring the convenience of splicing the two groups of splicing seats (13), improving the installation efficiency of the annular heat conducting plate (11), and ensuring that when the outer tube (4) is in use, the heat generated inside it can be conducted to the heat dissipation fins (12) through the annular heat conducting plate (11) for heat dissipation, thereby increasing the heat dissipation area of ​​the equipment, ensuring the heat dissipation efficiency of the equipment, preventing the jar from overheating under high-intensity work, and extending the service life of the equipment.

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