A directional drilling unjamming device
By using the lifting and hammering components of the directional drilling unsticking device, the problem of drill string damage after the drill string gets stuck is solved, and a safe drill string unsticking process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING DINGCHENG CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technology, when the drill string gets stuck, the drilling platform's own motor drive equipment must be disengaged when it reaches the maximum tonnage, otherwise it will overload and damage the drill string, and it will be impossible to statically maintain the lifting tonnage.
A directional drilling unblocking device was designed, comprising a base, a lifting component, and a hammering component. The lifting component provides an upward thrust, and the hammering component provides a vibration force to assist in unblocking the drill rod.
It effectively solved the problem of drill string damage after the drill string gets stuck, and achieved a safe and stable drill string unsticking process, avoiding drill string overload damage.
Smart Images
Figure CN224532661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of directional drilling and unblocking technology, specifically to a directional drilling and unblocking device. Background Technology
[0002] During drilling, the phenomenon where drill string becomes stuck in the well and cannot move freely due to various reasons is called stuck drill string. After a stuck drill string occurs, the drill string cannot be retrieved, or even lowered or rotated. In some cases, the drilling fluid cannot be circulated. This is a common accident in drilling operations, and improper handling can lead to economic losses ranging from millions to tens of millions of dollars. After a stuck drill string accident occurs, when using the drilling platform's own motor-driven equipment to pull the drill pipe upwards, the pull-up must be disengaged once it reaches the maximum tonnage designed for drilling (or the allowable load tonnage of the drill pipe). Otherwise, overloading will damage the drill string, and the pulling-up tonnage cannot be statically maintained. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a directional drilling unblocking device, which solves the technical problem that when the drill pipe is pulled up using the drilling platform's own motor drive equipment after a stuck drill accident, it must be disengaged when the drill pipe is pulled up to the maximum tonnage designed for drilling (or the allowable load tonnage of the drill pipe), otherwise it will overload and damage the drill string, and the lifting tonnage cannot be statically maintained.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a directional drilling and unblocking device, comprising a base, an opening on the base, lifting components on both sides of the opening, a hammering component on the base and behind the opening, an upper clamping seat fixedly installed between the upper ends of the lifting components, an insertion port on the front wall of the upper clamping seat, dovetail grooves on both sides of the insertion port, dovetail rods inserted into the dovetail grooves, a plug fixedly installed between the dovetail rods, a first through hole on the upper clamping seat, second through holes on the dovetail rods and the plug, a limiting bolt inserted between the first and second through holes, a limiting nut screwed onto the limiting bolt, and an upper clamping body inserted at the upper end of the upper clamping seat.
[0005] Preferably, the lifting assembly includes a pair of first cylinders, which are respectively fixedly installed on the base and located on both sides of the opening. A first motor is fixedly installed on the lower inner wall of the first cylinder, and a lead screw is fixedly installed on the drive end of the first motor. Sliding grooves are respectively opened on the inner side walls of the first cylinder, and sliders are slidably installed in the sliding grooves. A lifting rod is fixedly installed between the sliders. The upper end of the lifting rod passes through the upper wall of the first cylinder, and the upper end of the lifting rod is fixedly connected to the lower wall of the upper clamp seat. A threaded groove is opened on the lower wall of the lifting rod, and the lead screw is engaged in the threaded groove.
[0006] Preferably, the hammering assembly includes a second cylinder, which is fixedly mounted on the base and located behind the opening. A second motor is fixedly mounted on the rear outer wall of the second cylinder. The drive end of the second motor passes through the rear wall of the second cylinder and is fixedly mounted with a rotating shaft. The other end of the rotating shaft is rotatably mounted on the front inner wall of the second cylinder. A cam is fixedly mounted on the rotating shaft. Guide grooves are respectively opened on the front and rear inner walls of the second cylinder. Guide blocks are slidably mounted in the guide grooves. A contact plate is fixedly mounted between the guide blocks. A hammer column is fixedly mounted on the upper wall of the contact plate. A first spring is fixedly mounted between the contact plate and the upper inner wall of the second cylinder. The upper end of the hammer column passes through the upper wall of the second cylinder.
[0007] Preferably, the hammer column has an inner cavity, a second spring is fixedly installed on the lower wall of the inner cavity, a limit plate is fixedly installed on the upper end of the second spring, and a hammer body is fixedly installed on the upper wall of the limit plate, with the upper end of the hammer body penetrating through the inner cavity. Beneficial effects
[0008] This invention provides a directional drilling unsticking device, solving the technical problem that when the drill pipe is pulled up using the drilling platform's own motor drive after a stuck drill accident, it must be disengaged when the drill pipe is pulled up to the maximum tonnage designed for drilling (or the allowable load tonnage of the drill pipe), otherwise it will overload and damage the drill string, and the lifting tonnage cannot be statically maintained. This invention fixes the base plate at the drill pipe, so that the drill pipe is embedded in the opening and the socket. At this time, the insert block is inserted into the dovetail groove through the dovetail rod. The insert block is installed at the socket. At this time, the first through hole and the second through hole are on the same axis. The limiting bolt is inserted into the first through hole and the second through hole, and the limiting nut is screwed onto the limiting bolt. Then, the upper slip body is inserted into the upper slip seat, thereby fixing the drill pipe. The upper slip seat is pushed by the lifting component, thereby providing an upward thrust to the drill pipe. The hammering component provides vibration and hammering force to the upper slip seat, thereby assisting in unsticking the drill pipe. Attached Figure Description
[0009] Figure 1 This is a front view structural diagram of the directional drilling and unblocking device of this utility model.
[0010] Figure 2 This is a side view of the directional drilling and unblocking device of the present invention.
[0011] Figure 3 This is a schematic diagram of the upper slip seat structure of the directional drilling and unslipping device of this utility model.
[0012] In the diagram: 1. Base; 2. Opening; 3. Upper clamp seat; 4. Dovetail groove; 5. Insertion port; 6. Dovetail rod; 7. Insert block; 8. Limit bolt; 9. Limit nut; 10. First cylinder; 11. First motor; 12. Lead screw; 13. Slide groove; 14. Slider; 15. Lifting rod; 16. Second cylinder; 17. Second motor; 18. Rotating shaft; 19. Cam; 20. Guide groove; 21. Guide block; 22. Contact plate; 23. Hammer column; 24. First spring; 25. Inner cavity; 26. Hammer body; 27. Second spring; 28. Limit plate. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-3 This utility model provides a technical solution: a directional drilling and unblocking device, including a base 1, an opening 2 on the base 1, lifting components on the base 1 and located on both sides of the opening 2, a hammering component on the base 1 and located behind the opening 2, an upper clamping seat 3 fixedly installed between the upper ends of the lifting components, an insertion port 5 on the front wall of the upper clamping seat 3, dovetail grooves 4 on the inner two side walls of the insertion port 5, dovetail rods 6 inserted into the dovetail grooves 4, inserting blocks 7 fixedly installed between the dovetail rods 6, a first through hole on the upper clamping seat 3, second through holes on the dovetail rods 6 and the inserting blocks 7, a limiting bolt 8 inserted between the first through hole and the second through hole, a limiting nut 9 screwed onto the limiting bolt 8, and an upper clamping body inserted into the upper end of the upper clamping seat 3.
[0015] In this embodiment, the lifting assembly includes a pair of first cylinders 10. The first cylinders 10 are fixedly installed on the base 1 and located on both sides of the opening 2. A first motor 11 is fixedly installed on the lower inner wall of the first cylinder 10. A lead screw 12 is fixedly installed on the driving end of the first motor 11. Slide grooves 13 are respectively opened on the inner side walls of the first cylinder 10. A slider 14 is slidably installed in the slide groove 13. A lifting rod 15 is fixedly installed between the sliders 14. The upper end of the lifting rod 15 passes through the upper wall of the first cylinder 10. The upper end of the lifting rod 15 is fixedly connected to the lower wall of the upper clamp seat 3. A threaded groove is opened on the lower wall of the lifting rod 15. The lead screw 12 is engaged in the threaded groove.
[0016] In this embodiment, the hammering assembly includes a second cylinder 16, which is fixedly mounted on the base 1 and located behind the opening 2. A second motor 17 is fixedly mounted on the outer rear wall of the second cylinder 16. The driving end of the second motor 17 passes through the rear wall of the second cylinder 16 and is fixedly mounted on a rotating shaft 18. The other end of the rotating shaft 18 is rotatably mounted on the inner front wall of the second cylinder 16. A cam 19 is fixedly mounted on the rotating shaft 18. Guide grooves 20 are respectively opened on the inner front and rear walls of the second cylinder 16. Guide blocks 21 are slidably mounted in the guide grooves 20. A contact plate 22 is fixedly mounted between the guide blocks 21. A hammer column 23 is fixedly mounted on the upper wall of the contact plate 22. A first spring 24 is fixedly mounted between the contact plate 22 and the inner upper wall of the second cylinder 16. The upper end of the hammer column 23 passes through the upper wall of the second cylinder 16.
[0017] In this embodiment, the hammer column 23 is further configured to have an inner cavity 25, a second spring 27 is fixedly installed on the lower wall of the inner cavity 25, a limit plate 28 is fixedly installed on the upper end of the second spring 27, a hammer body 26 is fixedly installed on the upper wall of the limit plate 28, and the upper end of the hammer body 26 passes through the inner cavity 25.
[0018] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.
[0019] Example: As shown in the accompanying drawings, during use, the base plate is fixedly installed at the drill rod, with the drill rod embedded in the opening 2 and the insertion port 5. The insertion block 7 is then inserted into the dovetail groove 4 via the dovetail rod 6. The insertion block 7 is installed at the insertion port 5. At this time, the first through hole and the second through hole are on the same axis. The limiting bolt 8 is inserted into the first through hole and the second through hole, and the limiting nut 9 is screwed onto the limiting bolt 8. The upper clamping body is then inserted into the upper clamping seat 3 to fix the drill rod. The first motor 11 is then started, and the drive end of the first motor 11 drives the lead screw 12 to rotate. Since the lifting rod 15 passes through the threaded groove... The screw 12 is engaged with the lead screw 12, which drives the lifting rod 15 when it rotates. The lifting rod 15 moves upward along the path of the slide groove 13 under the action of the slider 14, which pushes the upper slip seat 3, giving the drill rod an upward thrust. At the same time, the second motor 17 is started. The drive end of the second motor 17 drives the shaft to rotate, and the shaft drives the cam 19 to rotate. The eccentric end of the cam 19 pushes the contact plate 22 up and down, and the contact plate 22 pushes the hammer 26. The hammer 26 strikes the upper slip seat 3 up and down, which vibrates the drill rod and strikes the drill rod upward, assisting in the support of the drill rod.
[0020] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A directional drilling and unblocking device, comprising a base (1), characterized in that, An opening (2) is provided on the base (1). Lifting components are provided on the base (1) on both sides of the opening (2). A hammering component is provided on the base (1) behind the opening (2). An upper clamping seat (3) is fixedly installed between the upper ends of the lifting components. An insertion port (5) is provided on the front wall of the upper clamping seat (3). Dovetail grooves (4) are provided on both sides of the insertion port (5). A dovetail rod (6) is inserted into the dovetail groove (4). A plug (7) is fixedly installed between the dovetail rods (6). A first through hole is provided on the upper clamping seat (3). A second through hole is provided on the dovetail rod (6) and the plug (7). A limit bolt (8) is inserted between the first through hole and the second through hole. A limit nut (9) is screwed onto the limit bolt (8). An upper clamping body is inserted at the upper end of the upper clamping seat (3). The hammering component includes a second cylinder (16). The cylinder (16) is fixedly installed on the base (1) and located behind the opening (2). A second motor (17) is fixedly installed on the outer rear wall of the second cylinder (16). The driving end of the second motor (17) passes through the rear wall of the second cylinder (16) and is fixedly installed with a rotating shaft (18). The other end of the rotating shaft (18) is rotatably installed on the inner front wall of the second cylinder (16). A cam (19) is fixedly installed on the rotating shaft (18). 6) Guide grooves (20) are respectively provided on the inner front and back walls. Guide blocks (21) are slidably installed in the guide grooves (20). Contact plates (22) are fixedly installed between the guide blocks (21). Hammer columns (23) are fixedly installed on the upper wall of the contact plates (22). A first spring (24) is fixedly installed between the contact plates (22) and the upper inner wall of the second cylinder (16). The upper end of the hammer column (23) penetrates the upper wall of the second cylinder (16).
2. The directional drilling unblocking device according to claim 1, characterized in that... The lifting assembly includes a pair of first cylinders (10), which are fixedly installed on the base (1) and located on both sides of the opening (2). A first motor (11) is fixedly installed on the lower inner wall of the first cylinder (10), and a lead screw (12) is fixedly installed on the driving end of the first motor (11). Slide grooves (13) are respectively opened on the inner two side walls of the first cylinder (10). A slider (14) is slidably installed in the slide groove (13). A lifting rod (15) is fixedly installed between the sliders (14). The upper end of the lifting rod (15) passes through the upper wall of the first cylinder (10). The upper end of the lifting rod (15) is fixedly connected to the lower wall of the upper clamp seat (3). A threaded groove is opened on the lower wall of the lifting rod (15), and the lead screw (12) is engaged in the threaded groove.
3. The directional drilling unblocking device according to claim 1, characterized in that... The hammer column (23) has an inner cavity (25). A second spring (27) is fixedly installed on the lower wall of the inner cavity (25). A limit plate (28) is fixedly installed on the upper end of the second spring (27). A hammer body (26) is fixedly installed on the upper wall of the limit plate (28). The upper end of the hammer body (26) passes through the inner cavity (25).