Adjustable water plugging rubber plug for oil well

Abstract

The utility model discloses an adjustable water plugging rubber plug for an oil well. The adjustable water plugging rubber plug comprises a contraction seat, a connecting rod is arranged on one side of the telescopic seat; wherein a sliding rod is arranged in the middle of the connecting rod, and an inclined block is fixedly connected to the inner side of the sliding rod; wherein a lifting rod is slidably connected to the outer side of the inclined block, a rubber plug block is arranged at one end of the lifting rod, an adjusting rod is slidably connected to the middle of the connecting frame, a reset plate is fixedly connected to one end of the adjusting rod, a reset groove is slidably connected to the outer side of the reset plate, and an attaching block is fixedly connected to one side of the reset groove. The other side of the reset plate is fixedly connected with a reset spring, the rubber plug block is driven by the lifting rod to deform and contract, the shape of the unfolded rubber plug block is more stable when the shape of the rubber plug block is restored, and therefore the attaching effect of the rubber plug block and the well wall is enhanced conveniently, and the attaching effect of the rubber plug block and the well wall is improved by arranging an attaching block in the middle of the rubber plug block. And the fitting degree of the water plugging rubber plug and the well wall during use can be further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well exploitation, in particular to an adjustable water plugging rubber plug for an oil well. Background Art

[0002] In oil well exploitation, water plugging plugs are first used as an important tool to isolate different strata. Since each layer in the geological stratum has different physical properties, these properties sometimes change suddenly, such as changes in pressure and permeability. Water plugging plugs can effectively isolate these strata and avoid fluid mixing and interference between different strata, thereby ensuring stability and safety during the exploitation process.

[0003] The patent document with the announcement number CN221722765U discloses an adjustable water plugging plug for oil wells, the adjustable water plugging plug for oil wells comprises a through pipe and a rubber bowl component sleeved on the through pipe, and the rubber bowl component comprises a casing, an upper rubber bowl and a lower rubber bowl are fixedly arranged on the casing, and an adjusting component for adjusting the opening and closing degree of the upper rubber bowl and the lower rubber bowl is arranged on the casing between the upper rubber bowl and the lower rubber bowl, and the upper rubber bowl and the lower rubber bowl in the adjustable water plugging plug for oil wells can flexibly adjust their expanded inner diameters, so that when grouting, the inner diameters of the upper rubber bowl and the lower rubber bowl can be increased, so that the upper rubber bowl and the lower rubber bowl are fixedly fitted with the well wall, and the stability of the rubber bowl component in the well wall is improved, and when the water plugging plug falls along the well wall, the inner diameters of the upper rubber bowl and the lower rubber bowl are reduced, which can effectively avoid the difficulty of the upper rubber bowl and the lower rubber bowl in the process of falling in the well wall, but the patent still has the following problems in actual use:

[0004] The water-blocking rubber plug achieves the fit and fixation of the rubber bowl to the well wall through the rubber ribs by opening and closing the rubber bowl component. However, since the rubber bowl itself is flexible, the rubber ribs are expanded by means of support. At this time, the outer sides of the rubber ribs are difficult to expand evenly, resulting in limited fit between the rubber ribs and the well wall. In addition, the edges of the rubber ribs are relatively smooth, resulting in poor stability during use.

[0005] Therefore, an adjustable water plugging plug for oil wells is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide an adjustable water-plugging rubber plug for oil wells, so as to solve the problem proposed in the above background technology that the water-plugging rubber plug currently realizes the fitting and fixing of the rubber bowl to the well wall through the rubber ribs by the opening and closing of the rubber bowl component, but since the rubber bowl itself has flexibility, it realizes the expansion of the rubber ribs by means of support, and at this time the outer sides of the rubber ribs are difficult to expand evenly, so that the fitting degree between the rubber ribs and the well wall is limited, and the edges of the rubber ribs are relatively smooth, resulting in poor stability during use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil well adjustable water plugging rubber plug, comprising a shrink seat;

[0008] A cylinder is installed in the middle of the retractable seat;

[0009] Also includes:

[0010] A contraction groove is provided on one side of the contraction seat, a connection block 1 is provided in the middle of the contraction groove, a connection rod is fixedly connected to one side of the connection block 1, a connection block 2 is fixedly connected to one end of the connection rod, a base is provided on the outer side of the connection block 2, and an isolation ring is sleeved on the outer side of the connection rod;

[0011] Wherein, a sliding rod is arranged in the middle of the connecting rod, one end of the sliding rod is fixedly connected to a supporting seat, the other end of the sliding rod is fixedly connected to a sliding seat, and the inner side of the sliding rod is fixedly connected to an inclined block;

[0012] Among them, a lifting rod is slidably connected to the outer side of the inclined block, an inclined surface is provided in the middle of the lifting rod, one end of the lifting rod is fixedly connected to a connecting frame, one side of the connecting frame is connected to a rubber plug block, an adjusting rod is slidably connected to the middle of the connecting frame, an adjusting surface is provided in the middle of the adjusting rod, one end of the adjusting rod is fixedly connected to a reset plate, a reset groove is slidably connected to the outer side of the reset plate, a fitting block is fixedly connected to one side of the reset groove, and a reset spring is fixedly connected to the other side of the reset plate.

[0013] Preferably, the contraction groove is opened on a side of the contraction seat close to the base, the sliding seat is slidably connected to the middle of the contraction groove, and the sliding seat is fixedly connected to one end of the cylinder to facilitate the positioning of the sliding seat.

[0014] Preferably, the connecting rods are arranged in four groups, and the four groups of connecting rods are evenly fixedly connected between connecting block one and connecting block two; the sliding rods are arranged in four groups, and the four groups of sliding rods are evenly fixedly connected in the middle of the supporting seat and the sliding seat; the sliding rods are aligned with the middle of adjacent connecting rods to facilitate the positioning of the connecting rods and the sliding rods.

[0015] Preferably, the support seat is slidably connected to the middle of the connecting block 1, the connecting rod and the connecting block 2, and the side of the support seat away from the sliding rod is overlapped with the middle of the support seat to facilitate the positioning of the support seat.

[0016] Preferably, the rubber plug blocks are arranged in two groups, and the two groups of rubber plug blocks are respectively arranged in the middle of the shrink seat and the isolation ring and in the middle of the isolation ring and the base, so as to facilitate the positioning of the rubber plug blocks.

[0017] Preferably, the connecting frame is arranged in an "I" shape, the connecting frame is fixedly connected to one side of the inner wall of the plug block, the lower end of the lifting rod passes through the middle of the adjacent connecting rod and is connected to the sliding rod, and the inclined surface is slidably connected to the inclined block to facilitate the positioning of the lifting rod.

[0018] Preferably, the adjustment surface is slidably connected to one side of the inclined block, the reset groove is opened in the middle of the outer side of the rubber plug block, the fitting block is slidably connected to the outer side of the rubber plug block, and the reset spring is fixedly connected to the side of the reset plate close to the lifting rod to facilitate the positioning of the fitting block.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the adjustable water plugging plug for oil wells drives the plug block to deform and shrink by the lifting rod, so that when the plug block is restored to its shape, the shape of the plug block after expansion is more stable, thereby facilitating the adhesion between the plug block and the well wall, and by arranging a bonding block in the middle of the plug block, it is convenient to further enhance the adhesion between the water plugging plug and the well wall when in use. The specific contents are as follows:

[0020] 1. The adjustable water plugging plug for oil wells is provided with a lifting rod, an inclined block and a sliding rod in the middle of the plug block, so that the sliding rod is driven to move by the cylinder to achieve the effect of deforming and shrinking the plug block. After the water plugging plug is moved to a suitable position, the shape of the plug block is restored, so that the shape of the plug block after unfolding is more stable, thereby facilitating the fitting effect between the plug block and the well wall, thereby making the adjustable water plugging plug for oil wells more practical;

[0021] 2. The adjustable water-plugging plug for oil wells is provided with a fitting block in the middle of the plug block, and a reset plate, a reset spring and an adjusting rod are provided on one side of the fitting block, so that the fitting block can follow the expansion and contraction of the plug block, thereby facilitating further enhancing the fit between the water-plugging plug and the well wall when in use, thereby making the adjustable water-plugging plug for oil wells more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front cross-section structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the local structure of the rubber plug block of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the rubber plug block of the utility model;

[0025] Figure 4 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 5 This is a schematic diagram of the sliding rod structure of the utility model.

[0027] In the figure: 1. retractable seat; 2. cylinder; 3. retractable groove; 4. connecting block 1; 5. connecting rod; 6. connecting block 2; 7. isolating ring; 8. base; 9. supporting seat; 10. sliding rod; 11. inclined block; 12. sliding seat; 13. lifting rod; 14. inclined surface; 15. connecting frame; 16. rubber plug block; 17. adjusting rod; 18. adjusting surface; 19. reset plate; 20. reset groove; 21. fitting block; 22. reset spring. DETAILED DESCRIPTION

[0028] 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0029] See also Figure 1-Figure 5 The utility model provides a technical solution: an oil well adjustable water plugging plug, comprising a contraction seat 1; a cylinder 2 is installed in the middle of the contraction seat 1; and further comprising: a contraction groove 3 is opened on one side of the contraction seat 1, a connecting block 4 is arranged in the middle of the contraction groove 3, a connecting rod 5 is fixedly connected to one side of the connecting block 4, one end of the connecting rod 5 is fixedly connected to a connecting block 2 6, a base 8 is arranged on the outer side of the connecting block 2 6, and an isolating ring 7 is sleeved on the outer side of the connecting rod 5; the contraction groove 3 is opened on one side of the contraction seat 1 close to the base 8, a sliding seat 12 is slidably connected to the middle of the contraction groove 3, and the sliding seat 12 is fixedly connected to one end of the cylinder 2; the connecting rod 5 is arranged in four groups, and the four groups of connecting rods 5 are evenly fixedly connected between the connecting block 1 4 and the connecting block 2 6. By arranging the connecting blocks 1 4 and the connecting blocks 2 6 at both ends of the connecting rod 5, it is convenient to realize the connection between the contraction seat 1, the isolating ring 7 and the base 8, and it is convenient to position the plug block 16, thereby facilitating the stable expansion and contraction of the plug block 16, so that the water plugging plug has stronger practicality.

[0030] Among them, a sliding rod 10 is arranged in the middle of the connecting rod 5, one end of the sliding rod 10 is fixedly connected to a support seat 9, the other end of the sliding rod 10 is fixedly connected to a sliding seat 12, and an inclined block 11 is fixedly connected to the inner side of the sliding rod 10; the sliding rod 10 is arranged in four groups, and the four groups of sliding rods 10 are evenly fixedly connected in the middle of the support seat 9 and the sliding seat 12, and the sliding rod 10 is aligned with the middle of the adjacent connecting rod 5; the support seat 9 is slidably connected to the middle of the connecting block 1 4, the connecting rod 5 and the connecting block 2 6, and the side of the support seat 9 away from the sliding rod 10 is overlapped with the middle of the support seat 9. By arranging the inclined block 11 on the inner side of the sliding rod 10, it is convenient to adjust the position of the inclined block 11 by moving the sliding rod 10, thereby making the contraction of the rubber plug block 16 more convenient and quick, and also convenient for the rubber plug block 16 to be quickly restored, so that the shape of the rubber plug block 16 after expansion is more stable.

[0031] Among them, the outer side of the inclined block 11 is slidably connected with a lifting rod 13, a slant 14 is provided in the middle of the lifting rod 13, one end of the lifting rod 13 is fixedly connected with a connecting frame 15, one side of the connecting frame 15 is connected with a rubber plug block 16, the middle of the connecting frame 15 is slidably connected with an adjusting rod 17, an adjusting surface 18 is provided in the middle of the adjusting rod 17, one end of the adjusting rod 17 is fixedly connected with a reset plate 19, the outer side of the reset plate 19 is slidably connected with a reset groove 20, one side of the reset groove 20 is fixedly connected with a fitting block 21, and the other side of the reset plate 19 is fixedly connected with a reset spring 22; the rubber plug block 16 is provided in two groups, and the two groups of rubber plug blocks 16 are respectively provided in the middle of the shrink seat 1 and the isolation ring 7 and in the middle of the isolation ring 7 and the base 8; the connecting frame 15 is provided It is in the shape of an "I". The connecting frame 15 is fixedly connected to one side of the inner wall of the rubber plug block 16. The lower end of the lifting rod 13 passes through the middle of the adjacent connecting rod 5 and is connected to the sliding rod 10. The inclined surface 14 is slidably connected to the inclined block 11; the adjusting surface 18 is slidably connected to one side of the inclined block 11. The reset groove 20 is opened in the middle of the outer side of the rubber plug block 16. The fitting block 21 is slidably connected to the outer side of the rubber plug block 16. The reset spring 22 is fixedly connected to the side of the reset plate 19 close to the lifting rod 13. By arranging the fitting block 21 in the middle of the rubber plug block 16 and cooperating with the adjusting rod 17, it is convenient for the fitting block 21 to follow the expansion and contraction of the rubber plug block 16, thereby enhancing the fitting effect of the fitting block 21 with the well wall, making the use of the water plugging plug more stable.

[0032] Working principle: When using the adjustable water-plugging plug for oil wells, first, by controlling the cylinder 2 in the contraction seat 1 to contract, the cylinder 2 drives the sliding seat 12 to slide in the contraction groove 3, so that the sliding seat 12 drives the inclined block 11 to slide through the sliding rod 10 and the support seat 9. At this time, the sliding rod 10 slides between the connecting block 1 4, the connecting rod 5 and the connecting block 2 6.

[0033] Secondly, the rubber plug block 16 slides and contracts on the inclined block 11 through the inclined surface 14 via the lifting rod 13 on the inner side of the connecting frame 15, so that the connecting frame 15 drives the rubber plug block 16 to contract between the contraction seat 1 and the isolation ring 7 and between the isolation ring 7 and the base 8 respectively. At the same time, the adjusting rod 17 slides on the inclined block 11 through the adjusting surface 18, so that the adjusting rod 17 drives the reset plate 19 and the fitting block 21 to slide in the reset groove 20, and the reset spring 22 contracts, so that the water plugging plug can be placed at a suitable position in the oil well.

[0034] Finally, the sliding rod 10 is reset by controlling the extension of the air cylinder 2, so that the shape of the rubber plug block 16 is restored, and under the action of the reset spring 22, the fitting block 21 is fitted to the inner wall of the oil well.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable water plugging plug for an oil well, comprising a shrink seat (1); A cylinder (2) is installed in the middle of the retractable seat (1); It is characterized in that Also includes: A contraction groove (3) is provided on one side of the contraction seat (1), a connection block (4) is provided in the middle of the contraction groove (3), a connection rod (5) is fixedly connected to one side of the connection block (4), one end of the connection rod (5) is fixedly connected to a connection block (6), a base (8) is provided on the outer side of the connection block (6), and an isolation ring (7) is sleeved on the outer side of the connection rod (5); A sliding rod (10) is arranged in the middle of the connecting rod (5); one end of the sliding rod (10) is fixedly connected to a support seat (9); the other end of the sliding rod (10) is fixedly connected to a sliding seat (12); and the inner side of the sliding rod (10) is fixedly connected to an inclined block (11); The outer side of the inclined block (11) is slidably connected to a lifting rod (13), a slanted surface (14) is provided in the middle of the lifting rod (13), one end of the lifting rod (13) is fixedly connected to a connecting frame (15), one side of the connecting frame (15) is connected to a rubber plug block (16), the middle of the connecting frame (15) is slidably connected to an adjusting rod (17), an adjusting surface (18) is provided in the middle of the adjusting rod (17), one end of the adjusting rod (17) is fixedly connected to a reset plate (19), the outer side of the reset plate (19) is slidably connected to a reset groove (20), one side of the reset groove (20) is fixedly connected to a fitting block (21), and the other side of the reset plate (19) is fixedly connected to a reset spring (22).

2. The adjustable water plugging plug for oil wells according to claim 1, characterized in that: The shrinkage groove (3) is provided on a side of the shrinkage seat (1) close to the base (8), the sliding seat (12) is slidably connected to the middle of the shrinkage groove (3), and the sliding seat (12) is fixedly connected to one end of the cylinder (2).

3. The adjustable water plugging plug for oil wells according to claim 1, characterized in that: The connecting rods (5) are arranged in four groups, and the four groups of connecting rods (5) are evenly fixedly connected between the first connecting block (4) and the second connecting block (6). The sliding rods (10) are arranged in four groups, and the four groups of sliding rods (10) are evenly fixedly connected in the middle of the support seat (9) and the sliding seat (12). The sliding rods (10) are aligned with the middle of adjacent connecting rods (5).

4. The adjustable water plugging plug for oil wells according to claim 3, characterized in that: The support seat (9) is slidably connected to the middle of the connecting block 1 (4), the connecting rod (5) and the connecting block 2 (6), and the side of the support seat (9) away from the sliding rod (10) is overlapped with the middle of the support seat (9).

5. The adjustable water plugging plug for oil wells according to claim 1, characterized in that: The rubber plug blocks (16) are arranged in two groups, and the two groups of rubber plug blocks (16) are arranged in the middle of the shrink seat (1) and the isolation ring (7) and in the middle of the isolation ring (7) and the base (8), respectively.

6. The adjustable water plugging plug for oil wells according to claim 1, characterized in that: The connecting frame (15) is arranged in an "I" shape, the connecting frame (15) is fixedly connected to one side of the inner wall of the rubber plug block (16), the lower end of the lifting rod (13) passes through the middle of the adjacent connecting rod (5) and is connected to the sliding rod (10), and the inclined surface (14) is slidably connected to the inclined block (11).

7. The adjustable water plugging plug for oil wells according to claim 1, characterized in that: The adjustment surface (18) is slidably connected to one side of the inclined block (11), the reset groove (20) is provided in the middle of the outer side of the rubber plug block (16), the fitting block (21) is slidably connected to the outer side of the rubber plug block (16), and the reset spring (22) is fixedly connected to one side of the reset plate (19) close to the lifting rod (13).

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