Petroleum drilling plugging device

Abstract

The utility model relates to the technical field of petroleum exploitation, and discloses a petroleum drilling plugging device which comprises an outer shell, a jacking mechanism, plugging pieces and rubber plugging pads, the number of the plugging pieces is three, one rubber plugging pad is fixed to the outer side of each plugging piece, a polytetrafluoroethylene coating is sprayed to the outer side of each rubber plugging pad, and the outer side of each rubber plugging pad is coated with a polytetrafluoroethylene coating. The jacking mechanism is installed on the outer shell, the three plugging pieces are connected with the jacking mechanism, and the jacking mechanism comprises a two-way screw, a synchronous wheel, a synchronous belt, a first external thread, a second external thread, a threaded sleeve, a swing rod and a pin shaft. The plugging device is convenient to install, good in plugging performance and quick in effect taking.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil exploitation technical field especially relates to a petroleum drilling plugging device. BACKGROUND

[0002] Oil exploitation needs to carry out drilling first. The wellhead of drilling is close to the ground, and rainwater is easy to seep into the crack of the wellhead inner wall when raining, needing to be plugged. At present, when plugging, it is plugged through injecting glue or injecting cement slurry, but the complete setting time of glue and cement slurry is relatively long, leading to slow effect speed, therefore, in view of the above status, it is urgent to develop a petroleum drilling plugging device which is convenient to install, has good plugging performance and fast effect time to overcome the deficiency in current actual application and satisfy current demand. SUMMARY

[0003] The utility model discloses a petroleum drilling plugging device to solve the problem in the background art.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A petroleum drilling plugging device, including shell body, top tight mechanism, plugging piece and rubber plugging pad, the number of plugging piece is three, and one rubber plugging pad is fixed on the outside of each plugging piece, a layer of polytetrafluoroethylene coating is sprayed on the outside of the rubber plugging pad, the top tight mechanism is installed on the shell body, and three plugging pieces are connected with the top tight mechanism respectively, the top tight mechanism includes: bidirectional screw rod, synchronous wheel, synchronous belt, first external thread, second external thread, thread sleeve, swing rod and pin shaft, three bidirectional screw rods are rotatably connected in the shell body, one synchronous wheel is fixed on the upper end of each bidirectional screw rod, the three synchronous wheels are drivingly connected through the synchronous belt, the upper half of the bidirectional screw rod is provided with the first external thread, the lower half of the bidirectional screw rod is provided with the second external thread, the upper half and the lower half of the bidirectional screw rod are provided with the thread sleeve, the rotation directions of the first external thread and the second external thread are opposite, one swing rod is connected to each thread sleeve, one end of the swing rod is rotatably connected with the thread sleeve through the pin shaft, and the other end of the swing rod is rotatably connected with the plugging piece through the pin shaft.

[0006] Preferably, the three plugging pieces are circularly and uniformly distributed with the central axis of the shell body as the reference.

[0007] Preferably, the upper end of the bidirectional screw rod is fixed with a rotating handle, and the rotating handle is located at the top of the shell body.

[0008] Preferably, the shell body is provided with a sliding groove for the swing rod to move.

[0009] Preferably, a plurality of fixing cones are detachably mounted on the outer shell body.

[0010] The petroleum drilling leakage stopping device has the advantages that the outer shell body is inserted into the drilling well mouth, the fixing cone is punched into the ground, the outer shell body is fixed, then a person rotates the rotating handle to drive the bidirectional screw rod to rotate, the two threaded sleeves on the bidirectional screw rod are driven to move close to each other, the swing rod is driven to swing through the threaded sleeves, the sealing piece is pushed outwards when the swing rod swings, the rubber sealing pad is tightly attached to the inner wall of the drilling well, and the water leakage position on the well wall is stopped. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A is a schematic view of a part of the utility model Figure 1 .

[0012] Figure 2 A is a schematic view of a part of the utility model Figure 2 .

[0013] Figure 3 A is a schematic view of a part of the utility model Figure 1 .

[0014] Figure 4 A is a partial view of the utility model Figure 3 .

[0015] Figure 5 A is a schematic view of a part of the utility model Figure 2 .

[0016] LEGEND:

[0017] 1, outer shell body; 101, sliding groove; 2, fixing cone; 3, pressing mechanism; 301, bidirectional screw rod; 3011, rotating handle; 302, synchronous wheel; 303, synchronous belt; 304, first external thread; 305, second external thread; 306, threaded sleeve; 307, swing rod; 308, pin shaft; 4, sealing piece; 5, rubber sealing pad; 501, polytetrafluoroethylene coating. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Specific embodiments are given below.

[0020] Referring to Figures 1-5 The utility model discloses an oil drilling plugging device, including shell body 1, top tight mechanism 3, plugging piece 4 and rubber plugging pad 5, the number of plugging piece 4 is three, three plugging piece 4 is circularly distributed with shell body 1's middle axis as reference, the outside of every plugging piece 4 is fixed with a rubber plugging pad 5, and the rubber plugging pad 5 has certain elastic deformation ability, so that it is better with the inner wall of drilling, the outside of rubber plugging pad 5 is sprayed with a layer of polytetrafluoroethylene coating 501, and the polytetrafluoroethylene coating 501 has good wear resistance and puncture resistance, thereby improve the use performance of rubber plugging pad 5, top tight mechanism 3 is installed on shell body 1, and three plugging piece 4 is connected with top tight mechanism 3 respectively, and top tight mechanism 3 includes: bidirectional screw rod 301, synchronous wheel 302, synchronous belt 303, first external thread 304, second external thread 305, threaded sleeve 306, swing bar 307 and pin shaft 308, three bidirectional screw rods 301 are rotatably connected in shell body 1, and the upper end of every bidirectional screw rod 301 is fixed with a synchronous wheel 302, and the three synchronous wheels 302 are transmissionally connected through synchronous belt 303, the upper half of bidirectional screw rod 301 is provided with first external thread 304, the lower half of bidirectional screw rod 301 is provided with second external thread 305, and the upper half and the lower half of bidirectional screw rod 301 are provided with threaded sleeve 306, and the rotation direction of first external thread 304 and second external thread 305 is opposite, so that the moving direction of two threaded sleeves 306 is opposite when bidirectional screw rod 301 rotates, every threaded sleeve 306 is connected with a swing bar 307, one end of swing bar 307 is rotatably connected with threaded sleeve 306 through pin shaft 308, the other end of swing bar 307 is rotatably connected with plugging piece 4 through pin shaft 308, and shell body 1 is provided with sliding groove 101 for the movement of swing bar 307, and the upper end of bidirectional screw rod 301 is fixed with rotating handle 3011, and rotating handle 3011 is located at the top of shell body 1.

[0021] A plurality of fixing cones 2 are detachably installed on the shell body 1, in use, the fixing cone 2 is driven into the ground at the well mouth of the well, so that the shell body 1 is fixed.

[0022] Working principle: the oil drilling plugging device, in use, first, the shell body 1 is inserted into the well mouth, then the fixing cone 2 is driven into the ground, so that the shell body 1 is fixed, then the person rotates the rotating handle 3011 to drive the bidirectional screw rod 301 to rotate, the two threaded sleeves 306 on the bidirectional screw rod 301 are driven to move towards each other, the swing bar 307 is swung by the threaded sleeve 306, the plugging piece 4 is pushed outwards when the swing bar 307 swings, so that the rubber plugging pad 5 is tightly attached to the inner wall of the well, so that the water leakage on the well wall is plugged.

[0023] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A petroleum drilling leak stoppage device, characterized by, Including outer shell (1), top tight mechanism (3), blocking piece (4) and rubber blocking pad (5), the number of blocking piece (4) is three, the outer side of each blocking piece (4) is fixed with a rubber blocking pad (5), the outer side of the rubber blocking pad (5) is sprayed with a layer of polytetrafluoroethylene coating (501), the top tight mechanism (3) is installed on the outer shell (1), three blocking pieces (4) are connected with the top tight mechanism (3) respectively, the top tight mechanism (3) includes: bidirectional screw (301), synchronous wheel (302), synchronous belt (303), first external thread (304), second external thread (305), threaded sleeve (306), swing lever (307) and pin shaft (308), the outer shell (1) is rotatably connected with three bidirectional screws (301), the upper end of each bidirectional screw (301) is fixed with a synchronous wheel (302), three synchronous wheels (302) are drivenly connected through synchronous belt (303) between the three synchronous wheels (302), the upper half of the bidirectional screw (301) is provided with the first external thread (304), the lower half of the bidirectional screw (301) is provided with the second external thread (305), the upper half and the lower half of the bidirectional screw (301) are provided with the threaded sleeve (306), the rotation directions of the first external thread (304) and the second external thread (305) are opposite, each threaded sleeve (306) is connected with a swing lever (307), one end of the swing lever (307) is rotatably connected with the threaded sleeve (306) through the pin shaft (308), the other end of the swing lever (307) is rotatably connected with the blocking piece (4) through the pin shaft (308).

2. The petroleum drilling leak stoppage device of claim 1, wherein, Three blocking pieces (4) are circularly and uniformly distributed with the central axis of the outer shell (1) as the reference.

3. The petroleum drilling leak stoppage device of claim 1, wherein, The upper end of the bidirectional screw (301) is fixed with a rotating handle (3011), and the rotating handle (3011) is located at the top of the outer shell (1).

4. The petroleum drilling leak stoppage device of claim 1, wherein, The outer shell (1) is provided with a sliding groove (101) for the movement of the swing lever (307).

5. The petroleum drilling leak stoppage device of claim 1, wherein, A plurality of fixing cones (2) are detachably installed on the outer shell (1).

Images