Hydraulic oil pipe bridge plug

Abstract

The utility model discloses a hydraulic oil pipe bridge plug, which relates to the field of bridge plugs and comprises a bridge plug, a slip is sleeved on the outer side of the middle of the bridge plug, a plurality of fixing holes are arranged on the outer side of the slip, slip teeth are mounted on the inner sides of the fixing holes, and fixing mechanisms are arranged between the slip teeth and the fixing holes. By arranging the fixing hole, the slip teeth, the limiting movable groove, the limiting ring groove, the fixing ring, the elastic piece, the clamping column and the limiting ring and installing the slip teeth, the fixing ring only needs to be connected to the bottom ends of the slip teeth in a sleeved mode, then the end, provided with the fixing ring, of the slip teeth is inserted into the fixing hole, the elastic piece is extruded to deform, the clamping column is inserted into the limiting movable groove, and the slip teeth are installed. When the elastic pieces slide to the clamping grooves, certain deformation can be recovered, the elastic pieces are clamped in the clamping grooves, and at the moment, the slip teeth are fixed in the fixing holes, so that the installation of the slip teeth is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the field of bridge plugs, in particular to a hydraulic oil pipe bridge plug. Background Art

[0002] During well repair operations in oil fields, in order to balance the downhole pressure and prevent blowout accidents, it is necessary to use well killing hydraulic wells. Since well killing fluids are all chemical agents, they are easy to contaminate the oil layer and affect the oil layer recovery rate. In order to reduce the pollution to the oil layer, when repairing high-pressure oil, gas and water wells, pressure operations are usually adopted, that is, the tubing is raised and lowered without killing the well, without releasing the blowout, and maintaining the original well pressure. Before raising and lowering the oil pipe, the oil pipe plug must be used first to block the oil pipe to prevent high-pressure liquids such as crude oil and water from entering the oil pipe and overflowing from the wellhead.

[0003] In order to ensure that there is sufficient friction in the oil pipe and improve the sealing reliability of the bridge plug, a plurality of slip teeth are embedded on the slip to make the bridge plug bite more firmly. The existing slip teeth are glued to the slips with adhesive, and the gluing action of the plurality of slip teeth is relatively time-consuming. In order to quickly install the slip teeth, a hydraulic oil pipe bridge plug is provided. Utility Model Content

[0004] The utility model aims to provide a hydraulic oil pipe bridge plug to solve the problem that the existing slip teeth are glued to the slips by adhesive and the gluing action of multiple slip teeth is relatively time-consuming.

[0005] To achieve the above object, the utility model provides the following technical solutions: a hydraulic oil pipe bridge plug, comprising a bridge plug, wherein a slip is sleeved on the outer side of the middle part of the bridge plug, a plurality of fixing holes are opened on the outer side of the slip, a slip tooth is installed on the inner side of the fixing hole, and a fixing mechanism is arranged between the slip tooth and the fixing hole;

[0006] The fixing mechanism includes a clamping groove, a limiting movable groove, a limiting ring groove, a fixing ring, a spring sheet, a clamping column, and a limiting ring;

[0007] The clamping groove is opened at the bottom end of the inner wall of the fixing hole and is provided in plurality, and the plurality of clamping grooves are distributed in a ring shape;

[0008] The limiting movable grooves are provided in plurality, and the plurality of limiting movable grooves are evenly opened on the outer wall of the lower end of the slip tooth, the limiting ring groove is opened on the outer wall of the lower end of the slip tooth, and the limiting ring groove is located above the limiting movable groove;

[0009] The fixing ring is sleeved on the outer wall of the lower end of the cava tooth, a plurality of spring sheets are provided, and the plurality of spring sheets are evenly formed on the outer wall of the fixing ring, the clamping column is fixedly connected to the inner side of the spring sheet, and the clamping column is aligned with the opening of the limiting movable groove, the limiting ring is formed on the inner wall of the fixing ring, and the limiting ring is engaged with the limiting ring groove.

[0010] As a further solution of the utility model: the fixing mechanism also includes a slider and a slide groove, the slide groove is opened on the outer wall of the bottom end of the cava tooth and is located directly below the limiting movable groove, the slider is fixedly connected to the inner wall of the bottom end of the fixing ring, and is located directly below the clamping column and is slidably connected to the slide groove.

[0011] As a further solution of the utility model: the fixing ring, the spring sheet and the clamping column are all made of deformable materials, so that the fixing ring can be conveniently sleeved on the lower end of the slip tooth.

[0012] As a further solution of the utility model: the top of the limiting ring is arc-shaped, the inner wall of the top of the limiting ring groove is an arc groove matching the top of the limiting ring, and the limiting movable groove is a downward groove.

[0013] As a further solution of the utility model: the maximum outer diameter of the cava tooth, the outer diameter of the fixing ring, and the diameter of the fixing hole are consistent, the height of the clamping groove is consistent with the distance from the bottom end of the fixing ring to the top end of the spring sheet, and the thickness of the clamping groove always keeps the spring sheet in a compressed state.

[0014] As a further solution of the utility model: the side of the spring sheet is an arc structure, the top is a horizontal structure, and when the spring sheet is in a vertical state, the upper surface of the clamping column is in contact with the top of the inner wall of the limiting movable groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The slip tooth is installed by setting a fixing hole, a slip tooth, a limiting movable groove, a limiting ring groove, a fixing ring, a spring piece, a clamping column and a limiting ring. It is only necessary to sleeve the fixing ring on the bottom end of the slip tooth, and then insert the end of the slip tooth with the fixing ring into the fixing hole. The spring piece is squeezed and deformed, and the clamping column is inserted into the limiting movable groove. When the spring piece slides to the clamping groove, it will restore a certain deformation, and the spring piece is clamped in the clamping groove. At this time, the slip tooth is fixed in the fixing hole, making the installation of the slip tooth more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the slip teeth and the fixing ring of the utility model;

[0019] Figure 3 It is an exploded view of the slip teeth and the fixing ring of the utility model.

[0020] In the figure: 1, bridge plug; 2, slip; 3, fixing hole; 4, clamping groove; 5, slip tooth; 6, limiting movable groove; 7, limiting ring groove; 8, fixing ring; 9, spring piece; 10, clamping column; 11, limiting ring; 12, slider; 13, slide groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 3 In the embodiment of the utility model, a hydraulic oil pipe bridge plug includes a bridge plug 1, a slip 2 is sleeved on the outer side of the middle part of the bridge plug 1, a plurality of fixing holes 3 are opened on the outer side of the slip 2, a slip tooth 5 is installed on the inner side of the fixing hole 3, and a fixing mechanism is arranged between the slip tooth 5 and the fixing hole 3; the fixing mechanism includes a clamping groove 4, a limiting movable groove 6, a limiting ring groove 7, a fixing ring 8, a spring piece 9, a clamping column 10, and a limiting ring 11; the clamping groove 4 is opened at the bottom end of the inner wall of the fixing hole 3 and is provided with a plurality of them, and the plurality of clamping grooves 4 are distributed in a ring shape; a plurality of limiting movable grooves 6 are provided, and the plurality of limiting movable grooves 6 are evenly opened on the outer wall of the lower end of the slip tooth 5, and the limiting ring groove 7 is opened at the clamping groove 4. The outer wall of the lower end of the tile tooth 5, and the limiting ring groove 7 is located above the limiting movable groove 6; the fixed ring 8 is sleeved on the outer wall of the lower end of the tile tooth 5, and a plurality of spring sheets 9 are provided, and a plurality of spring sheets 9 are evenly formed on the outer wall of the fixed ring 8, the clamping column 10 is fixedly connected to the inner side of the spring sheet 9, and the clamping column 10 is aligned with the opening of the limiting movable groove 6, the limiting ring 11 is formed on the inner wall of the fixed ring 8, and the limiting ring 11 is engaged with the limiting ring groove 7; the fixing mechanism also includes a slider 12 and a slide groove 13, the slide groove 13 is opened on the outer wall of the bottom end of the tile tooth 5, and is located directly below the limiting movable groove 6, the slider 12 is fixedly connected to the inner wall of the bottom end of the fixed ring 8, and is located directly below the clamping column 10 and is slidably connected to the slide groove 13.

[0023] In this embodiment: first, align the slider 12 with the slide groove 13, and sleeve the fixing ring 8 on the lower end of the slip tooth 5. The fixing ring 8 will be deformed by force until the limiting ring 11 is inserted into the limiting ring groove 7. At this time, the slider 12 is engaged with the slide groove 13, and the clamping column 10 will align with the limiting movable groove 6. Then, insert the end of the slip tooth 5 with the fixing ring 8 into the fixing hole 3. When the fixing ring 8 enters the fixing hole 3, the spring piece 9 will be squeezed and deformed inwardly, and the clamping column 10 will be inserted into the limiting movable groove 6. When the spring piece 9 slides to the clamping groove 4, it will restore a certain deformation outward, and the spring piece 9 will be stuck in the clamping groove 4. At the same time, the clamping column 10 will not completely break away from the limiting movable groove 6. At this time, the fixing ring 8 is fixed in the fixing hole 3, and the slip tooth 5 is fixed to the fixing ring 8 by the limiting ring 11 and the clamping column 10, so that the slip tooth 5 is quickly fixed in the fixing hole 3.

[0024] Please refer to Figures 2-3 The fixing ring 8, the spring piece 9 and the clamping column 10 are all made of deformable materials, so that the fixing ring 8 is conveniently sleeved on the lower end of the slip tooth 5.

[0025] In this embodiment: it is ensured that the fixing ring 8 can be sleeved on the lower end of the slip tooth 5, the clamping column 10 can be inserted into the limiting movable groove 6, and the spring piece 9 can be deformed by being squeezed.

[0026] Please refer to Figures 2-3 The top of the limiting ring 11 is arc-shaped, the inner wall at the top of the limiting ring groove 7 is an arc groove matching the top of the limiting ring 11, and the limiting movable groove 6 is a downward groove; the side of the spring piece 9 is an arc structure, the top is a horizontal structure, and when the spring piece 9 is in a vertical state, the upper surface of the clamping column 10 is in contact with the top of the inner wall of the groove of the limiting movable groove 6.

[0027] In this embodiment: the top of the limiting ring 11 is in an arc shape, which makes it convenient for the fixing ring 8 to be sleeved on the lower end of the cava tooth 5 and is not easy to be separated from the cava tooth 5. The limiting movable groove 6 is a downward groove. When the clamping column 10 is inserted into the limiting movable groove 6, it will provide a limit for the upward movement of the clamping column 10, so that the spring piece 9 is not easy to deform downward, thereby achieving a stable engagement between the spring piece 9 and the clamping groove 4, making it difficult for the cava tooth 5 to slip upward.

[0028] Please refer to Figures 1-2 The maximum outer diameter of the slip tooth 5, the outer diameter of the fixing ring 8, and the diameter of the fixing hole 3 are consistent, the height of the clamping groove 4 is consistent with the distance from the bottom end of the fixing ring 8 to the top end of the spring piece 9, and the thickness of the clamping groove 4 always keeps the spring piece 9 in a compressed state.

[0029] In this embodiment, it is ensured that when the spring piece 9 slides into the engaging groove 4, it can restore a certain deformation, so that the top of the spring piece 9 contacts the inner wall of the top of the engaging groove 4, so that the fixing ring 8 can no longer slide up, and at the same time ensure that the clamping column 10 will not completely separate from the limiting movable groove 6.

[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic oil pipe bridge plug, comprising a bridge plug (1), wherein a slip (2) is sleeved on the outer side of the middle portion of the bridge plug (1), characterized in that: A plurality of fixing holes (3) are provided on the outer side of the slip (2), a slip tooth (5) is installed on the inner side of the fixing hole (3), and a fixing mechanism is provided between the slip tooth (5) and the fixing hole (3); The fixing mechanism comprises a clamping groove (4), a limiting movable groove (6), a limiting ring groove (7), a fixing ring (8), a spring sheet (9), a clamping column (10), and a limiting ring (11); The clamping groove (4) is opened at the bottom end of the inner wall of the fixing hole (3) and is provided in plurality, and the plurality of clamping grooves (4) are distributed in a ring shape; A plurality of the movable limiting grooves (6) are provided, and the plurality of movable limiting grooves (6) are evenly arranged on the outer wall of the lower end of the slip tooth (5); the limiting ring groove (7) is arranged on the outer wall of the lower end of the slip tooth (5), and the limiting ring groove (7) is located above the movable limiting groove (6); The fixing ring (8) is sleeved on the outer wall of the lower end of the cava tooth (5), a plurality of spring sheets (9) are provided, and the plurality of spring sheets (9) are evenly formed on the outer wall of the fixing ring (8), the clamping column (10) is fixedly connected to the inner side of the spring sheet (9), and the clamping column (10) is aligned with the opening of the limiting movable groove (6), the limiting ring (11) is formed on the inner wall of the fixing ring (8), and the limiting ring (11) is engaged with the limiting ring groove (7).

2. A hydraulic oil pipe bridge plug according to claim 1, characterized in that: The fixing mechanism further comprises a slider (12) and a slide groove (13); the slide groove (13) is formed on the outer wall of the bottom end of the cava tooth (5) and is located directly below the limit movable groove (6); the slider (12) is fixedly connected to the inner wall of the bottom end of the fixing ring (8), and is located directly below the clamping column (10) and is slidably connected to the slide groove (13).

3. A hydraulic oil pipe bridge plug according to claim 1, characterized in that: The fixing ring (8), the spring sheet (9) and the clamping column (10) are all made of deformable materials, so that the fixing ring (8) can be conveniently sleeved on the lower end of the slip tooth (5).

4. A hydraulic oil pipe bridge plug according to claim 1, characterized in that: The top of the limiting ring (11) is in the shape of an arc, the inner wall of the top of the limiting ring groove (7) is in the shape of an arc groove matching the top of the limiting ring (11), and the limiting movable groove (6) is in the shape of a downward groove.

5. The hydraulic oil pipe bridge plug according to claim 1, characterized in that: The maximum outer diameter of the slip tooth (5), the outer diameter of the fixing ring (8), and the diameter of the fixing hole (3) are consistent; the height of the clamping groove (4) is consistent with the distance from the bottom end of the fixing ring (8) to the top end of the spring sheet (9); and the thickness of the clamping groove (4) always keeps the spring sheet (9) in a compressed state.

6. A hydraulic oil pipe bridge plug according to claim 1, characterized in that: The side surface of the spring sheet (9) is in an arc structure, and the top is in a horizontal structure. When the spring sheet (9) is in a vertical state, the upper surface of the clamping column (10) fits with the top of the inner wall of the limiting movable groove (6).

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