Drilling hole plugging device for well drilling

Abstract

The utility model discloses a drilling hole plugging device, which relates to the technical field of petroleum drilling, and has the technical key points that the drilling hole plugging device comprises a first barrel body and a second barrel body, the second barrel body is sleeved at the lower end of the first barrel body in a sliding manner, a first guide pipe is fixedly connected in the first barrel body, and a second guide pipe is fixedly connected in the second barrel body; the first guide pipe is slidably connected to the upper end of the second guide pipe in a sleeving mode, a screw rod is rotationally installed on the side, located on the first guide pipe, in the first barrel, a nut is fixedly connected to the upper end of the screw rod, a screw pipe is fixedly installed on the side, located on the second guide pipe, in the second barrel, and the screw pipe is connected to the lower end of the screw rod in a sleeving mode and is in threaded connection with the screw rod. The plugging device has the technical effects that the whole plugging device is arranged to be provided with the first cylinder body and the second cylinder body which can slide, the plugging device can be extended when being used, and the plugging device can be shortened when being transported and carried, so that the plugging device is convenient to transport and carry.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling technology, specifically to a borehole plugging device for drilling. Background Technology

[0002] In geological exploration, drilling a small-diameter, deep cylindrical hole into the ground using drilling equipment is also known as well drilling. In some downhole borehole sealing processes, existing sealing methods typically involve filling a thick-walled pipe with a filler material to achieve a sealing effect.

[0003] Chinese Patent CN210798920U discloses a downhole borehole plugging device, comprising: a hollow tube; a plugging mechanism fixedly sleeved on the hollow tube, the plugging mechanism including annular fixing plates, a wrapping membrane, bentonite, a through hole, and annular water-stop strips, two annular fixing plates fixedly sleeved on the outer wall of the hollow tube, the wrapping membrane fixedly connected between the two annular fixing plates, the bentonite filling the space between the two annular fixing plates, the wrapping membrane, and the hollow tube, the through hole being formed on the wrapping membrane, and multiple annular water-stop strips fixedly sleeved on the hollow tube, the annular water-stop strips being positioned above the annular fixing plates; a diversion mechanism connected to the upper end of the hollow tube; an auxiliary mechanism fixedly sleeved on the outer wall of the hollow tube; and a fixing mechanism formed within the auxiliary mechanism.

[0004] Regarding the aforementioned technologies, the inventors have discovered at least the following problems: existing borehole plugs generally have a certain length, which makes them inconvenient to transport and carry.

[0005] Therefore, we propose a borehole plug for drilling. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the existing technology, this utility model provides a borehole plug for drilling, which solves the problem that the borehole plug generally has a certain length, making it inconvenient to transport and carry.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a borehole plugging device for drilling, comprising a first cylinder and a second cylinder, the second cylinder being slidably sleeved on the lower end of the first cylinder, a first guide tube being fixedly connected inside the first cylinder, and a second guide tube being fixedly connected inside the second cylinder, the first guide tube being slidably sleeved on the upper end of the second guide tube;

[0010] A screw is rotatably installed inside the first cylinder on one side of the first conduit, and a nut is fixedly connected to the upper end of the screw. A screw tube is fixedly installed inside the second cylinder on one side of the second conduit, and the screw tube is sleeved on the lower end of the screw and threadedly connected to the screw.

[0011] Preferably, the upper end of the first cylinder is fixedly connected to a mounting plate, and the mounting plate has a plurality of annularly distributed mounting holes.

[0012] Preferably, the upper end of the first conduit is fixedly connected to a liquid outlet pipe, and a valve is installed on the liquid outlet pipe.

[0013] Preferably, the surface of the nut has a cross groove.

[0014] Preferably, the upper end of the first cylinder is provided with a groove, and the nut is embedded in the groove.

[0015] Preferably, the upper end of the first cylinder is hinged with a cover plate for covering the groove.

[0016] Preferably, a guide rod is fixedly installed inside the first cylinder on the other side of the first conduit, and a guide tube is fixedly installed inside the second cylinder on the other side of the second conduit, with the guide tube slidably sleeved on the lower end of the guide rod.

[0017] Preferably, a plurality of water-swellable sealing rings are fixedly fitted onto the outer surface of the second cylinder.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a borehole plug for drilling, which has the following advantages:

[0020] 1. This utility model sets the entire plugging device into a sliding first cylinder and a sliding second cylinder. A tool can be used to rotate the nut, causing the nut to rotate the screw, which in turn causes the screw tube to slide along the screw, and the screw tube causes the second cylinder to slide along the first cylinder. This allows the length of the plugging device to be adjusted. When using the plugging device, it can be extended, and when transporting and carrying it, it can be shortened, thus facilitating the transport and carrying of the plugging device.

[0021] 2. This utility model, by setting grooves and cover plates, can store and protect nuts, preventing them from being damaged by external impacts. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the second cylinder of this utility model;

[0025] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0026] In the picture:

[0027] 1. First cylinder; 11. First guide tube; 12. Screw; 13. Nut; 14. Mounting plate; 15. Mounting hole; 16. Discharge pipe; 17. Valve; 18. Cross groove; 19. Groove; 110. Cover plate; 111. Guide rod;

[0028] 2. Second cylinder; 21. Second guide tube; 22. Spiral tube; 23. Guide tube; 24. Water-swellable sealing ring. Detailed Implementation

[0029] 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.

[0030] This utility model provides a technical solution:

[0031] Please see Figures 1-4A drilling plugging device includes a first cylinder 1 and a second cylinder 2. The second cylinder 2 is slidably sleeved on the lower end of the first cylinder 1. A first guide tube 11 is fixedly connected inside the first cylinder 1, located at the center of the first cylinder 1 and arranged along its length. A second guide tube 21 is fixedly connected inside the second cylinder 2, located at the center of the second cylinder 2 and arranged along its length. The first guide tube 11 is slidably sleeved on the upper end of the second guide tube 21. A screw 12 is rotatably installed inside the first cylinder 1 on one side of the first guide tube 11, arranged along the length of the first cylinder 1. A nut 13 is fixedly connected to the upper end of the screw 12. A threaded tube 22 is fixedly installed inside the second cylinder 2 on one side of the second guide tube 21, arranged along the length of the second cylinder 2. 2 is sleeved on the lower end of the screw 12 and threadedly connected to the screw 12. Inside the first cylinder 1, a guide rod 111 is fixedly installed on the other side of the first conduit 11. The guide rod 111 is parallel to the screw 12. Inside the second cylinder 2, a guide tube 23 is fixedly installed on the other side of the second conduit 21. The guide tube 23 is parallel to the screw tube 22 and is slidably sleeved on the lower end of the guide rod 111. By setting the entire plugging device into a sliding first cylinder 1 and a second cylinder 2, a tool can be used to rotate the nut 13, causing the nut 13 to drive the screw 12 to rotate, causing the screw 12 to drive the screw tube 22 to slide along the screw 12, and causing the screw tube 22 to drive the second cylinder 2 to slide along the first cylinder 1. Thus, the length of the plugging device can be adjusted. When using the plugging device, it can be extended; when transporting and carrying it, it can be shortened, thus facilitating the transport and carrying of the plugging device.

[0032] Furthermore, the surface of the nut 13 is provided with a cross groove 18. By providing the cross groove 18, the nut 13 can be rotated with a Phillips screwdriver, making the tools that can be used to rotate the nut 13 more diverse.

[0033] Furthermore, a groove 19 is provided at the upper end of the first cylinder 1, and the nut 13 is embedded in the groove 19. A cover plate 110 for covering the groove 19 is hinged at the upper end of the first cylinder 1. By providing the groove 19 and the cover plate 110, the nut 13 can be stored and protected, and the nut 13 can be prevented from being damaged by external collisions.

[0034] Reference Figures 1-3The upper end of the first cylinder 1 is fixedly connected to an installation plate 14, which has multiple annularly distributed installation holes 15. The upper end of the first conduit 11 is fixedly connected to an outlet pipe 16, which is equipped with a valve 17. Multiple water-swellable sealing rings 24 are fixedly fitted onto the outer surface of the second cylinder 2. When using the plug, the plug is first extended, and then the second cylinder 2 can be inserted into the borehole. After the plug is fully inserted, the installation plate 14 rests against the top of the borehole. Anchor rods or bolts can be inserted into the installation holes 15 to fix the installation plate 14. When the water-swellable sealing ring 24 encounters water in the borehole, the water-swellable sealing ring 24 will collide and press against the inner wall of the borehole to seal the borehole. When it is necessary to drain the water in the borehole, the valve 17 can be opened, and the water enters the first conduit 11 from the second conduit 21, then enters the outlet pipe 16 from the first conduit 11, and is discharged from the outlet pipe 16.

[0035] In practical use, the working principle of this utility model is as follows:

[0036] First, by setting the entire plugging device into a sliding first cylinder 1 and a second cylinder 2, the length of the plugging device can be adjusted. When using the plugging device, first extend the plugging device, and then insert the second cylinder 2 into the borehole. After the plugging device is fully inserted, the mounting plate 14 rests against the top of the borehole. Anchor rods or bolts can be inserted into the mounting hole 15 to fix the mounting plate 14. When the water-swellable sealing ring 24 encounters water in the borehole, the water-swellable sealing ring 24 will collide and press against the inner wall of the borehole to seal the borehole.

[0037] During transportation and carrying, a tool can be used to rotate the nut 13, causing the nut 13 to drive the screw 12 to rotate, causing the screw 12 to drive the screw tube 22 to slide along the screw 12, and causing the screw tube 22 to drive the second cylinder 2 to slide along the first cylinder 1, thereby shortening the plugger and facilitating the transportation and carrying of the plugger.

[0038] In summary, this drilling plugging device, by configuring the entire plugging device as a sliding first cylinder 1 and a second cylinder 2, allows the plugging device to be extended during use and shortened during transportation and carrying, thus facilitating the transportation and carrying of the plugging device.

[0039] 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 borehole plug for drilling, comprising a first cylinder (1) and a second cylinder (2), characterized in that: The second cylinder (2) is slidably sleeved on the lower end of the first cylinder (1). The first cylinder (1) is fixedly connected to the inside of the first conduit (11), and the second cylinder (2) is fixedly connected to the inside of the second conduit (21). The first conduit (11) is slidably sleeved on the upper end of the second conduit (21). Inside the first cylinder (1), a screw (12) is rotatably installed on one side of the first conduit (11). A nut (13) is fixedly connected to the upper end of the screw (12). Inside the second cylinder (2), a screw tube (22) is fixedly installed on one side of the second conduit (21). The screw tube (22) is sleeved on the lower end of the screw (12) and threadedly connected to the screw (12).

2. The drilling borehole plugging device according to claim 1, characterized in that: The upper end of the first cylinder (1) is fixedly connected to a mounting plate (14), and the mounting plate (14) has a plurality of annularly distributed mounting holes (15).

3. The drilling borehole plugging device according to claim 1, characterized in that: The upper end of the first conduit (11) is fixedly connected to an outlet pipe (16), and a valve (17) is installed on the outlet pipe (16).

4. The drilling borehole plugging device according to claim 1, characterized in that: The surface of the nut (13) is provided with a cross groove (18).

5. The drilling borehole plugging device according to claim 1, characterized in that: The upper end of the first cylindrical body (1) is provided with a groove (19), and the nut (13) is embedded in the groove (19).

6. The drilling borehole plugging device according to claim 5, characterized in that: The upper end of the first cylinder (1) is hinged with a cover plate (110) for covering the groove (19).

7. The drilling hole plugging device according to claim 1, characterized in that: Inside the first cylinder (1), a guide rod (111) is fixedly installed on the other side of the first conduit (11). Inside the second cylinder (2), a guide tube (23) is fixedly installed on the other side of the second conduit (21). The guide tube (23) is slidably sleeved on the lower end of the guide rod (111).

8. The drilling plug for well drilling according to claim 1, characterized in that: The outer surface of the second cylinder (2) is fixedly fitted with multiple water-swellable sealing rings (24).

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