A wellhead anti-falling object device for drilling engineering

Abstract

This utility model discloses a wellhead anti-falling object device for drilling engineering, relating to the field of drilling engineering technology. Its key technical features include a cover plate with two handles fixedly connected to its upper end. A through hole is provided inside the cover plate, and a sealing plug is installed at the through hole. A clamping mechanism is provided on the cover plate, comprising four movable cavities opened inside the cover plate. A sliding rod is fixedly connected between the inner walls of both sides of each movable cavity. A movable plate is slidably connected to the outer wall of each sliding rod, and a movable rod is fixedly connected to the lower end of each movable plate. This utility model, through the clamping mechanism, can drive the four clamping plates to clamp from all sides of the wellhead inner wall. Combined with the self-locking characteristics of the worm gear, it can more stably fix the cover plate in the wellhead position, preventing displacement and tilting of the cover plate. This reduces the risk of foreign objects falling into the wellhead due to gaps caused by loosening of the device, thus improving the protective effect of the wellhead.

Description

Technical Field

[0001] This utility model relates to the field of drilling engineering technology, specifically to a wellhead anti-falling object device for drilling engineering. Background Technology

[0002] In drilling operations, the wellhead, as the core channel connecting surface equipment and downhole drilling tools, directly determines the efficiency of drilling operations and the safety of personnel and equipment. However, the drilling site environment is complex, and the wellhead is exposed to the outdoors for a long time. Foreign objects can easily fall into the wellhead, causing the downhole drilling tools to get stuck and wear, increasing the cost of handling drilling accidents and downtime, and even causing major safety accidents such as well blowouts, posing a serious threat to the lives of on-site personnel and the surrounding environment. Therefore, preventing falling objects has become a key requirement for wellhead safety management.

[0003] However, most drilling sites typically use ordinary metal or plastic covers to directly cover the wellhead. These covers are fixed only by their own weight or simple clips, without a dedicated clamping mechanism. This makes the covers prone to displacement and tilting under the strong vibrations and wind forces generated during drilling operations, resulting in gaps at the edge of the wellhead. Foreign objects can still fall into these gaps, affecting the effectiveness of wellhead protection. Therefore, we propose a new type of wellhead anti-falling object device for drilling projects. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a wellhead anti-falling object device for drilling engineering, which solves the problem that ordinary cover plates are prone to displacement and tilting under vibration and wind force due to the lack of a special clamping mechanism, leading to the intrusion of foreign objects.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wellhead anti-falling object device for drilling engineering, including a cover plate, two handles fixedly connected to the upper end of the cover plate, a through hole opened in the cover plate, a sealing plug provided at the through hole, and a clamping mechanism provided on the cover plate.

[0008] Preferably, the clamping mechanism includes four movable cavities opened inside the cover plate. A sliding rod is fixedly connected between the inner walls on both sides of each movable cavity. A movable plate is slidably connected to the outer wall of each sliding rod. A movable rod is fixedly connected to the lower end of each movable plate. A strip-shaped opening is opened at the bottom of each movable cavity. The lower end of each movable rod passes through the corresponding strip-shaped opening and is fixedly connected to a clamping plate. A buffer pad is provided on one side wall of each clamping plate.

[0009] Preferably, a rack is fixedly connected to one side wall of each of the movable plates, a first rotating shaft is rotatably connected to the inner bottom of each of the movable cavities, a first gear is fixedly connected to the outer wall of each first rotating shaft, and each first gear meshes with the corresponding rack.

[0010] Preferably, the cover plate has an annular cavity, and the inner wall of the annular cavity is rotatably connected to a toothed ring. The upper end of each of the first rotating shafts extends into the annular cavity and is fixedly connected to a second gear, and each of the second gears meshes with the toothed ring.

[0011] Preferably, a fixing cover is fixedly connected to the upper end of the cover plate, and a second rotating shaft is rotatably connected to the inner top of the fixing cover. The lower end of the second rotating shaft extends into the interior of the annular cavity and is fixedly connected to the upper end of one of the first rotating shafts. A worm gear is fixedly connected to the outer wall of the second rotating shaft.

[0012] Preferably, a worm gear is rotatably connected between the inner walls of the two sides of the fixed cover. The worm gear meshes with a worm wheel, and one end of the worm gear passes through the fixed cover and is fixedly connected to a knob.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0015] This utility model uses a clamping mechanism to drive four clamping plates to clamp from all sides of the inner wall of the well opening. Combined with the self-locking characteristics of the worm gear, it can fix the cover plate more stably in the position of the well opening, avoiding displacement and tilting of the cover plate. This reduces the risk of foreign objects falling into the well opening due to gaps caused by loosening of the device, and improves the protection effect of the well opening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A above;

[0019] Figure 4 This is a schematic diagram of the first upper cross-sectional structure of the present invention;

[0020] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B above;

[0021] Figure 6 This is a schematic diagram of the second upper section structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the right-side cross-sectional structure of the present invention;

[0023] Figure 8 For the present utility model Figure 7 Enlarged structural diagram at point C;

[0024] Figure 9 This is a schematic diagram of the upper structure of this utility model.

[0025] In the picture:

[0026] 1. Cover plate;

[0027] 2. Handle;

[0028] 3. Through hole;

[0029] 4. Sealing plug;

[0030] 5. Clamping mechanism; 51. Moving cavity; 52. Sliding rod; 53. Moving plate; 54. Moving rod; 55. Strip-shaped opening; 56. Clamping plate; 57. Buffer pad; 58. Rack; 59. First rotating shaft; 510. First gear; 511. Annular cavity; 512. Gear ring; 513. Second gear; 514. Fixed cover; 515. Second rotating shaft; 516. Worm gear; 517. Worm; 518. Knob. Detailed Implementation

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] This utility model provides a technical solution:

[0033] Please see Figures 1-9 A wellhead anti-falling object device for drilling engineering includes a cover plate 1. Two handles 2 are fixedly connected to the upper end of the cover plate 1, which facilitates manual handling, installation or disassembly of the device. A through hole 3 is opened in the cover plate 1, and a sealing plug 4 is provided at the through hole 3. The outer wall of the sealing plug 4 is provided with external threads, and the inner wall of the through hole 3 is provided with internal threads. The two are initially fixed by threaded connection. At the same time, a nitrile rubber sealing ring is provided on the contact end face of the sealing plug 4 and the cover plate 1, which can further enhance the sealing performance and prevent the sealing plug 4 from falling off. A clamping mechanism 5 is provided on the cover plate 1, which can clamp the inner wall of the wellhead around the perimeter to prevent the cover plate 1 from shifting due to drilling vibration and wind force, and ensure the fixing effect of the cover plate 1.

[0034] Furthermore, the clamping mechanism 5 includes four movable cavities 51 opened inside the cover plate 1. A sliding rod 52 is fixedly connected between the inner walls on both sides of each movable cavity 51. A movable plate 53 is slidably connected to the outer wall of each sliding rod 52. A movable rod 54 is fixedly connected to the lower end of each movable plate 53. A strip-shaped opening 55 is opened at the bottom of each movable cavity 51. The lower end of each movable rod 54 passes through the corresponding strip-shaped opening 55 and is fixedly connected to a clamping plate 56. A buffer pad 57 is provided on one side wall of each clamping plate 56. The buffer pad 57 can prevent the clamping plate 56 from directly and rigidly contacting the inner wall of the wellhead, and prevent long-term clamping from causing wear and deformation of the inner wall of the wellhead.

[0035] Furthermore, a rack 58 is fixedly connected to one side wall of each movable plate 53, a first rotating shaft 59 is rotatably connected to the inner bottom of each movable cavity 51, a first gear 510 is fixedly connected to the outer wall of each first rotating shaft 59, and each first gear 510 meshes with the corresponding rack 58.

[0036] Furthermore, an annular cavity 511 is provided inside the cover plate 1. A toothed ring 512 is rotatably connected to the inner wall of the annular cavity 511. The upper end of each first rotating shaft 59 extends into the annular cavity 511 and is fixedly connected to a second gear 513. Each second gear 513 meshes with the toothed ring 512.

[0037] Furthermore, a fixed cover 514 is fixedly connected to the upper end of the cover plate 1, and a second rotating shaft 515 is rotatably connected to the inner top of the fixed cover 514. The lower end of the second rotating shaft 515 extends into the interior of the annular cavity 511 and is fixedly connected to the upper end of one of the first rotating shafts 59. A worm gear 516 is fixedly connected to the outer wall of the second rotating shaft 515.

[0038] Furthermore, a worm gear 517 is rotatably connected between the inner walls of both sides of the fixing cover 514. The worm gear 517 meshes with the worm wheel 516. The meshing of the worm gear 517 and the worm wheel 516 has self-locking properties. After clamping, no additional locking structure is required, which can prevent the clamping plate 56 from loosening due to vibration and ensure long-term fixed stability. One end of the worm gear 517 passes through the fixing cover 514 and is fixedly connected to a knob 518. The surface of the knob 518 is machined with a diamond-shaped anti-slip texture to enhance the friction between the hand and the knob 518.

[0039] In practical use, the working principle of this utility model is as follows:

[0040] When the operator uses the device, the entire device can be moved to the top of the wellhead using the two handles 2 at the top of the cover plate 1, so that the cover plate 1 completely covers the end face of the wellhead. At this time, the through hole 3 of the cover plate 1 is located in the center area of ​​the wellhead, which provides a positioning basis for subsequent sealing and fixing. If the through hole 3 is not needed, the sealing plug 4 is aligned with the through hole 3. Through the meshing relationship between the external thread on its outer wall and the internal thread on the inner wall of the through hole 3, the sealing plug 4 is rotated until it fits against the end face of the cover plate 1. At this time, the sealing ring at the contact point between the sealing plug 4 and the cover plate 1 is squeezed and deformed, filling the tiny gaps in the threaded connection, thus achieving physical sealing of the through hole 3.

[0041] Next, the operator turns knob 518, causing worm 517 to rotate. Since worm 517 meshes with worm wheel 516, worm wheel 516 drives second shaft 515 to rotate. The rotation of second shaft 515 drives one of the first shafts 59 to rotate, which in turn drives the corresponding second gear 513 to rotate. The second gear 513 meshes with gear ring 512, which drives gear ring 512 to rotate. The rotation of gear ring 512 drives other second gears 513 to rotate, which in turn drives all the first shafts 59 to rotate. When the first shaft 59 rotates, it drives the first gear 510 to rotate, which in turn causes the rack 58 meshing with the first gear 510 to move. The movement of rack 58 pushes moving plate 53 to move along sliding rod 52, which in turn causes moving rod 54 to move clamping plate 56 towards the inner wall of wellhead until the buffer pads 57 of the four clamping plates 56 are tightly fitted with the inner wall of wellhead. The buffer pads 57 are squeezed to absorb gaps and avoid rigid collisions, ultimately achieving stable fixation of the device.

[0042] After clamping and fixing, the device enters the sealing and protection stage. The device forms three layers of protection to block the intrusion of foreign objects. The cover plate 1 covers and blocks large foreign objects such as tools, gravel and rainwater. The sealing plug 4 prevents small foreign objects from falling into the through hole 3. The clamping plate 56 fits against the inner wall of the wellhead to reduce the gap between the cover plate 1 and the edge of the wellhead, ensuring the compatibility of sealing and fixing.

[0043] When the device needs to be dismantled, simply turn the knob 518 in the opposite direction to drive the worm gear 517 to rotate in the opposite direction. Through the transmission of the worm gear 517 and the worm wheel 516, the second shaft 515 and the first shaft 59 rotate in the opposite direction. The first gear 510 drives the rack 58 in the opposite direction, which drives the moving plate 53 to move away from the wellhead. The clamping plate 56 loosens the inner wall of the wellhead. After the clamping plate 56 is completely detached, the operator can use the handle 2 to move the cover plate 1 away from the wellhead to complete the device dismantling. If it is necessary to open the through hole 3, the sealing plug 4 can be removed by turning it in the opposite direction.

[0044] In summary, a wellhead anti-falling object device for drilling engineering, through the improvement and optimization of its working principle, has achieved wellhead anti-falling object protection, solved the problems of easy displacement and tilting and poor sealing of ordinary cover plates 1, and improved the safety and reliability of wellhead protection.

[0045] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A wellhead anti-falling object device for drilling engineering, comprising a cover plate (1), characterized in that: The upper end of the cover plate (1) is fixedly connected to two handles (2), the cover plate (1) has a through hole (3), a sealing plug (4) is provided at the through hole (3), and a clamping mechanism (5) is provided on the cover plate (1).

2. The wellhead anti-falling object device for drilling engineering according to claim 1, characterized in that: The clamping mechanism (5) includes four movable cavities (51) opened inside the cover plate (1). A sliding rod (52) is fixedly connected between the inner walls of both sides of each movable cavity (51). A movable plate (53) is slidably connected to the outer wall of each sliding rod (52). A movable rod (54) is fixedly connected to the lower end of each movable plate (53). A strip-shaped opening (55) is opened at the bottom of each movable cavity (51). The lower end of each movable rod (54) passes through the corresponding strip-shaped opening (55) and is fixedly connected to a clamping plate (56). A buffer pad (57) is provided on one side wall of each clamping plate (56).

3. A wellhead anti-falling object device for drilling engineering according to claim 2, characterized in that: Each of the moving plates (53) has a rack (58) fixedly connected to one side wall, and each of the moving cavities (51) has a first rotating shaft (59) rotatably connected to the bottom of the inner wall. Each of the first rotating shafts (59) has a first gear (510) fixedly connected to the outer wall. Each of the first gears (510) meshes with the corresponding rack (58).

4. A wellhead anti-falling object device for drilling engineering according to claim 3, characterized in that: The cover plate (1) has an annular cavity (511) inside. The inner wall of the annular cavity (511) is rotatably connected to a toothed ring (512). The upper end of each of the first rotating shafts (59) extends into the annular cavity (511) and is fixedly connected to a second gear (513). Each of the second gears (513) meshes with the toothed ring (512).

5. A wellhead anti-falling object device for drilling engineering according to claim 4, characterized in that: The upper end of the cover plate (1) is fixedly connected to a fixed cover (514), and the inner top of the fixed cover (514) is rotatably connected to a second rotating shaft (515). The lower end of the second rotating shaft (515) extends into the annular cavity (511) and is fixedly connected to the upper end of one of the first rotating shafts (59). The outer wall of the second rotating shaft (515) is fixedly connected to a worm gear (516).

6. A wellhead anti-falling object device for drilling engineering according to claim 5, characterized in that: A worm gear (517) is rotatably connected between the inner walls of the two sides of the fixed cover (514). The worm gear (517) meshes with the worm wheel (516). One end of the worm gear (517) passes through the fixed cover (514) and is fixedly connected to a knob (518).

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