Buckling tool for connecting kelly bar

Abstract

The utility model discloses a buckling tool for connecting kelly bars, and relates to the field of drilling. The device comprises a drag hook and an arc-shaped butt joint piece, a butt joint head is rotationally hinged to the outer arc wall of the butt joint piece, a supporting rod is detachably installed on the butt joint head, a handle rod is detachably installed at the free end of the supporting rod, hanging points are evenly arranged on the supporting rod in the length direction, and the drag hook and the hanging points are detachably installed. The device has the advantages that after the butt joint piece abuts against a drill rod of a well mouth, the drag hook is hooked on the square drill rod and hung on the hanging point on the supporting rod, the supporting rod is pulled downwards to enable the drag hook to drag the square drill rod, the drill rod of the well mouth is aligned and butt-jointed, and the device is flexible, simple and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the field of drilling, relates to the field of drill rod butt joint tools, and specifically relates to a square drill rod butt joint tool. Background Art

[0002] Kelly is the top part of the drill string. It is usually made of high-quality alloy steel. Its wall thickness is usually 2-3 times that of the drill pipe. It is used to transmit torque to drive the drill bit to rotate. When the Kelly is docked with the drill pipe at the wellhead, the Kelly will be offset. Therefore, the operator needs to pull the thread, such as tying a wire rope on the Kelly, to pull the Kelly and correct the position of the Kelly so that it can dock with the drill pipe smoothly. When the operator pulls the thread, it is time-consuming and laborious, which affects the time of docking the drill pipe, thereby affecting the drilling time of the drill pipe. Utility Model Content

[0003] The utility model provides a tool for connecting and fastening square drill rods in order to solve the technical problem that pulling square drill rods is time-consuming and labor-intensive and affects the docking time and drilling efficiency. After the docking piece is pressed against the drill rod at the wellhead, the pull hook is hooked on the square drill rod and hung on the hanging point on the support rod, and the support rod is pulled down to make the pull hook pull the square drill rod, so that the wellhead drill rod is aligned and docked, which is flexible and easy to use.

[0004] The technical solution adopted by the utility model is: to provide a square drill rod fastening tool, comprising a draw hook and an arc-shaped docking piece, the outer arc wall of the docking piece is rotatably hinged with a docking head, a support rod is detachably installed on the docking head, a handle rod is detachably installed on the free end of the support rod, and hanging points are evenly arranged on the support rod along the length direction, and the draw hook and the hanging point are detachably installed.

[0005] After the support rod and the docking joint on the docking piece are assembled, the docking piece is placed against the drill pipe at the wellhead, and the draw hook is hooked on the square drill pipe to be docked, and then the draw hook is hung on the hanging point on the support rod, and then the support rod is pulled down by the handle on the support rod, so that the draw hook pulls the square drill pipe and makes the square drill pipe deviate to one side, thereby correcting the position of the square drill pipe, so that the square drill pipe can be quickly docked with the drill pipe at the wellhead. The operation is simple and the docking efficiency of the square drill pipe is improved.

[0006] To further optimize the technical solution, the support rod includes a plurality of support sections that are threadedly connected, the docking joint and the handle are respectively threadedly connected to the support sections, and the hanging points are respectively arranged on the support sections.

[0007] The support rod is composed of multiple support sections connected by threads. The length of the support rod can be adjusted according to the use requirements, which makes it more flexible and labor-saving to use. The support sections with separate hanging points are convenient for adjusting the hanging position of the hook so as to pull the square drill rod that needs to be connected.

[0008] To further optimize the technical solution, the butt joint includes a support welded and fixed to the outer arc wall of the butt joint piece, a connecting seat is rotatably pinned inside the support by means of a pin connection, a threaded groove is provided on the connecting seat, and the threaded groove is threadedly connected to the support section.

[0009] The support is welded and fixed on the outer arc wall of the docking piece, and the support is used as a connection point to rotate and hinge the connecting seat. The threaded groove on the connecting seat is threadedly connected to the support section to realize the rotation and hinge of the docking piece and the support rod. It is easy to assemble and flexible to use. The assembly structure is simple, and the use is stable and reliable.

[0010] To further optimize the technical solution, the pin connection member includes a pin shaft that is pin-connected to the support and the connecting seat, a through hole is formed at one end of the pin shaft, and a locking ring is inserted into the through hole.

[0011] The end of the pin shaft with a through hole passes through the support and the connecting seat respectively, and then the locking ring is inserted, so as to prevent the pin shaft from falling off the support and the connecting seat, ensure the firmness of the assembly of the support and the connecting seat, and improve the safety of use.

[0012] To further optimize the technical solution, the hanging point includes a "U"-shaped bolt and two holes arranged on the supporting section, both ends of the "U"-shaped bolt are respectively plugged into the holes, and both ends of the bolt pass through the holes and are threadedly connected with fixing nuts.

[0013] After the "U"-shaped bolt is connected to the pull hook, it is inserted into the hole on the support section. After passing through the hole, the fixing nut is connected and the "U"-shaped bolt is tightened and fixed on the support section to fix the pull hook to prevent it from falling off the support rod when the other party's drill rod is pulled, thereby ensuring the reliability of the use of the pull hook.

[0014] To further optimize the technical solution, positioning gaskets are welded and fixed at both ends of the outer wall of the "U"-shaped bolt, and the positioning gaskets are in contact with the outer wall of the supporting section.

[0015] As the nut is tightened on the bolt, the positioning gasket on the bolt abuts against the outer wall of the support section, thereby clamping and fixing the bolt on the support section along with the fixing nut to prevent the bolt from loosening.

[0016] To further optimize the technical solution, the handlebar comprises a round rod threadedly connected to the support section, and a handle sleeve is sleeved on the outer wall of the round rod.

[0017] When the support rod is pulled down by the handle, the round rod is connected with the thread of the support section, which is convenient for disassembly and assembly, and the handle is sleeved on the outer wall of the round rod, which improves the comfort of use.

[0018] The beneficial effects of the utility model are:

[0019] 1. After the support rod and the docking piece are assembled, the docking piece is placed against the drill pipe at the wellhead, and the hook is hooked on the outer wall of the square drill pipe to be docked, and then the hook is hung on the hanging point of the support rod. Then, the support rod is pulled down by the rod, and the hook is pulled to pull the square drill pipe, so that the square drill pipe is corrected in the opposite direction of the deviation, so that the square drill pipe can be smoothly docked with the drill pipe at the wellhead. The operation is simple, and the flexibility and efficiency of use are improved;

[0020] 2. The support rod is composed of multiple support sections connected by threads. The support rod can select the appropriate number of support sections and adjust the length of the support rod according to the use requirements, so as to hang the hook and save effort in pulling the drill rod through the hook. After the support section is split, it is convenient to retract and release it, and it is flexible to use;

[0021] 3. The support rod is hinged through the rotation of the butt joint and the butt piece, and the support and the connecting seat of the butt joint are hinged through the rotation of the pin shaft. One end of the through hole set by the pin shaft passes through the support and the connecting seat respectively, and then the locking ring is inserted to prevent the pin shaft from detaching, thereby ensuring the safety of the rotation hinge of the support and the connecting seat. The connecting seat is threadedly connected to the support rod through the threaded groove, and the support and the butt piece are welded and fixed. This is used as the connection point to make the support rod rotate along the butt piece. The butt joint has a simple structure and is stable and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the Kelly bar fastening tool of this embodiment;

[0023] Figure 2 Schematic diagram of the assembly structure of the butt joint piece and the butt joint of this embodiment;

[0024] Figure 3 This is a schematic diagram of the split structure of the support and the connecting seat of this embodiment;

[0025] Figure 4 This is a schematic diagram of the split structure of the support section of this embodiment;

[0026] Figure 5 This is a schematic diagram of the split structure of the bolt and the support section of this embodiment;

[0027] Figure 6 It is a schematic diagram of the split structure of the handlebar and the support section of this embodiment.

[0028] In the figure, 1, hook; 2, docking piece; 3, support rod; 301, support section; 3011, hole position; 4, handle bar; 401, round rod; 402, handle sleeve; 5, docking joint; 501, support; 502, connecting seat; 5021, threaded groove; 503, pin; 5031, through hole; 5032, locking ring; 6, bolt; 601, fixing nut; 602, positioning gasket. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Please refer to the attached Figure 1 , Attachment Figure 4 A square drill rod fastening tool comprises a hook 1 and an arc-shaped docking piece 2, the outer arc wall of the docking piece 2 is rotatably hinged with a docking head 5, and a support rod 3 is detachably mounted on the docking head 5. The support rod 3 is a multi-section support section 301 connected by threads. The support section 301 is provided with an internal thread groove and an external thread at both ends. The support section 301 is connected by a threaded connection between the external thread and the internal thread groove. The multi-section support sections 301 are connected, and according to the use requirements, a suitable number of support sections 301 are threadedly connected to adjust the length of the support rod 3, thereby improving the use flexibility. When not in use, it is convenient to disassemble it and reduce its use volume;

[0031] Please refer to the attached Figure 1-3 The support rod 3 is assembled with the docking joint 5 on the docking piece 2 through the support section 301. The docking joint 5 is a support 501 welded and fixed on the outer arc wall of the docking piece 2. A connecting seat 502 is rotatably pinned in the support 501 by means of a pin connection. The pin connection is a pin shaft 503 pinned with the support 501 and the connecting seat 502. One end with a through hole 5031 is inserted into a locking ring 5032 after passing through the support 501 and the connecting seat 502, thereby preventing the pin shaft 503 from falling off from the support 501 and the connecting seat 502, thereby improving the firmness of the rotation pin connection between the support 501 and the connecting seat 502. A threaded groove 5021 is provided on the connecting seat 502, and the threaded groove 5021 is threadedly connected to the support section 301, so that the support rod 3 is rotatably hinged with the docking piece 2, which is convenient for adjusting the position of the support rod 3;

[0032] Please refer to the attached Figure 4 , Attachment Figure 5 The support rod 3 is evenly provided with hanging points for hanging the hook 1, and the hanging points are respectively arranged on the support section 301, and the hanging points include a "U"-shaped bolt 6 and two holes 3011 arranged on the support section 301. After the "U"-shaped bolt 6 is connected with the hook 1, the two ends of the "U"-shaped bolt 6 are respectively plugged into the holes 3011 on the support section 301, and after penetrating the holes 3011, a fixing nut 601 is threadedly connected, so that the bolt 6 is tightened and fixed on the support section 301, and the two ends of the outer wall of the "U"-shaped bolt 6 are welded and fixed with positioning gaskets 602. As the bolt 6 is tightened, the positioning gasket 602 abuts against the outer wall of the support section 301, thereby enhancing the firmness of the bolt 6 being tightened and fixed;

[0033] Please refer to the attached Figure 6The free end of the support rod 3 is detachably provided with a handle bar 4, which includes a round rod 401 threadedly connected to the support section 301, and a handle sleeve 402 is sleeved on the outer wall of the round rod 401. When docking the square drill rod, after the inner arc wall of the docking piece 2 is attached to the drill rod at the wellhead, the hook 1 is hooked on the square drill rod to be docked, and then the support rod 3 is pulled by the handle bar 4 to rotate along the docking piece 2, so that the hook 1 pulls the square drill rod to deviate to one side, so that the male thread on the square drill rod and the female thread on the wellhead drill rod can dock smoothly, which is labor-saving to use;

[0034] The working principle of the square drill pipe fastening tool is as follows: the support rod 3 is threadedly connected and assembled with a suitable number of support sections 301 according to the use requirements, and the support section 301 at one end is threadedly connected with the round rod 401, and the support section 301 at the other end is threadedly connected with the thread groove 5021 on the connecting seat 502, so as to complete the assembly of the support rod 3 and the docking piece 2. After the docking piece 2 is pressed against the outer wall of the drill pipe at the wellhead, the "U"-shaped bolt 6 passes through the draw hook 1, and the bolt 6 is inserted into the support at the appropriate position. The support 301 is inserted into the hole 3011 on the support section 301, and a nut is connected after the hole 3011 is penetrated, the bolt 6 is tightened and fixed, and the hook 1 is connected to the support rod 3. When the square drill rod is docked, the hook 1 is hooked on the square drill rod. As the square drill rod approaches the drill rod at the wellhead, the operator presses the support rod 3 to the side of the square drill rod that deviates from the wellhead drill rod, so that the support rod 3 pulls the square drill rod through the hook 1, so that it corresponds to the position of the drill rod at the wellhead, thereby improving the efficiency of the square drill rod docking and simplifying the operation.

[0035] The detachable structure of the docking piece 2, the docking rod and the docking rod itself facilitates the disassembly of the docking piece into multiple parts, reduces the volume, facilitates the storage and use of the docking piece, and improves the flexibility of use.

Claims

1. A tool for fastening kelly rods, characterized in that: The invention comprises a draw hook (1) and an arc-shaped docking piece (2); the outer arc wall of the docking piece (2) is rotatably hinged with a docking head (5); a support rod (3) is detachably mounted on the docking head (5); a handle (4) is detachably mounted on the free end of the support rod (3); and hanging points are evenly arranged on the support rod (3) along the length direction; the draw hook (1) and the hanging point are detachably mounted.

2. A kelly bar fastening tool according to claim 1, characterized in that: The support rod (3) comprises a plurality of support sections (301) connected by threads, the butt joint (5) and the handle bar (4) are respectively connected by threads to the support sections (301), and the hanging points are respectively arranged on the support sections (301).

3. The kelly bar fastening tool according to claim 2, characterized in that: The docking joint (5) comprises a support (501) welded and fixed to the outer arc wall of the docking piece (2), a connecting seat (502) is rotatably pinned inside the support (501) by means of a pin connection, a thread groove (5021) is provided on the connecting seat (502), and the thread groove (5021) is threadedly connected to the support joint (301).

4. The kelly bar fastening tool according to claim 3, characterized in that: The pin connection member comprises a pin shaft (503) pin-connected with the support (501) and the connecting seat (502); a through hole (5031) is provided at one end of the pin shaft (503); a locking ring (5032) is inserted into the through hole (5031).

5. The kelly bar fastening tool according to claim 2, characterized in that: The hanging point comprises a U-shaped bolt (6) and two holes (3011) arranged on the supporting section (301), the two ends of the U-shaped bolt (6) are respectively plugged into the holes (3011), and both ends of the bolt (6) pass through the holes (3011) and are threadedly connected with fixing nuts (601).

6. The kelly bar fastening tool according to claim 5, characterized in that: Positioning washers (602) are welded and fixed at both ends of the outer wall of the "U"-shaped bolt (6), and the positioning washers (602) are in contact with the outer wall of the supporting section (301).

7. The kelly bar fastening tool according to claim 2, characterized in that: The handlebar (4) comprises a round rod (401) threadedly connected to the support section (301), and a handle sleeve (402) is sleeved on the outer wall of the round rod (401).

Images