Anti-sulfur packer for oil well

Abstract

The utility model discloses a sulfur prevention packer for an oil well, which comprises a main body piece, slots are arranged on the main body piece, the slots are uniformly distributed on the side wall of the main body piece and are pentagram-shaped, an opening component is arranged on the main body piece, an arc-shaped plate is arranged on the opening component, and an elastic sleeve is sleeved on the arc-shaped plate. The utility model belongs to the technical field of oil exploitation, and particularly relates to an anti-sulfur packer for an oil well, which can be mounted in a propping manner according to different inner diameters of wellbores by arranging a propping component, has higher flexibility, and can be matched with the propping component to be tightly attached to the inner diameters of the wellbores by arranging an elastic sleeve to improve the sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum mining, in particular to an anti-sulfur packer for oil wells. Background Art

[0002] Oil well anti-sulfur packers are specially designed to prevent corrosion from harmful gases such as hydrogen sulfide (H2S) in oil wells. They are typically installed in the wellbore to separate different oil and water layers, preventing fluid and pressure interference between the layers, while also protecting the casing from corrosion and damage.

[0003] The sulfur-proof packers used in oil wells in the prior art cannot be adjusted according to the inner diameter of the oil wellbore, and the sealing effect is not very good, which has certain limitations. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the sulfur-proof packer in the prior art cannot be adjusted according to the inner diameter of the oil well and has poor sealing effect.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A sulfur-proof packer for oil wells includes a main body with slots evenly distributed on the side walls of the main body and in the shape of a five-pointed star. The main body is provided with a support assembly, the support assembly is provided with an arc plate, and an elastic sleeve is sleeved on the arc plate.

[0007] Preferably, the expansion assembly includes a large gear, which is connected to the main body through a bearing. The main body is provided with arc grooves and five groups are evenly arranged. The slots are slidably connected to the plug-in plate, and the plug-in plate is fixed with a cylindrical pin, which is arranged in the arc groove.

[0008] Preferably, one group of the slots is fixed to an extension plate on its side, a motor seat is provided on the extension plate, a motor is fixed to the motor seat, the motor output end passes through the extension plate, a small gear is also provided at the motor output end, the large gear is meshed with the small gear, and the end of the slot is fixed to an arc plate.

[0009] Preferably, the top of the cylindrical pin is fixedly connected to a limiting cap.

[0010] Preferably, the main body, slot, insert plate and curved plate are made of AISI 316L stainless steel.

[0011] Preferably, the elastic sleeve is made of a composite material of nitrile rubber and silicone rubber.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows:

[0013] By setting up the expansion component, the expansion installation can be carried out according to the different inner diameters of the wellbore, which has greater flexibility. By setting up the elastic sleeve, the expansion component can be tightly fitted to the inner diameter of the wellbore to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 The cross-sectional structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0016] Figure 3 The cross-sectional structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0017] Figure 4 The cross-sectional structure of the embodiment of the present invention is shown in FIG. Figure 3 ;

[0018] Figure 5 The cross-sectional structure of the embodiment of the present invention is shown in FIG. Figure 4 .

[0019] Among them, 1. Main body, 2. Slot, 3. Spreading assembly, 4. Arc plate, 5. Elastic sleeve, 6. Large gear, 7. Arc groove, 8. Insert plate, 9. Cylindrical pin, 10. Extension plate, 11. Motor seat, 12. Motor, 13. Small gear, 14. Limit cap. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1 、 5 As shown, an anti-sulfur packer for oil wells includes a main body 1, on which slots 2 are evenly distributed on the side wall of the main body 1 and are in the shape of a five-pointed star, and on which a support component 3 is provided. The support component 3 is provided with an arc plate 4, and on which an elastic sleeve 5 is sleeved.

[0022] like Figure 2-5As shown, the expansion assembly 3 includes a large gear 6, which is connected to the main body 1 through a bearing. The main body 1 is provided with an arc groove 7 and five groups are evenly arranged. The slot 2 is slidably connected to the plug plate 8, and the plug plate 8 is fixed with a cylindrical pin 9. The cylindrical pin 9 is arranged in the arc groove 7. One group of slots 2 is fixed to an extension plate 10 on the side, and a motor seat 11 is provided on the extension plate 10. The motor 12 is fixed to the motor seat 11. The output end of the motor 12 passes through the extension plate 10. The output end of the motor 12 is also provided with a small gear 13. The large gear 6 is meshed with the small gear 13. The end of the slot 2 is fixed to the arc plate 4, and the top of the cylindrical pin 9 is fixed to a limiting cap 14 to play a limiting role.

[0023] like Figure 1 、 3 As shown in , 5 , the main body 1 , the slot 2 , the inserting plate 8 and the arc plate 4 are made of AISI 316L stainless steel with good corrosion resistance, and the elastic sleeve 5 is made of a composite material of nitrile rubber and silicone rubber, which also has good corrosion resistance.

[0024] During specific use, first place the anti-sulfur seal into the wellbore, start the motor 12, the motor 12 drives the small gear 13 to rotate, and the small gear 13 drives the large gear 6 to rotate. At this time, the arc groove 7 pushes the cylindrical pin 9 to move as the large gear 6 rotates, and the cylindrical pin 9 pushes the plug plate 8 to move along the slot 2, and the plug plate 8 pushes the arc plate 4 outward, and the arc plate 4 stretches the elastic sleeve 5 until it fits with the inner wall of the wellbore and has a good sealing effect. The composite material of the elastic sleeve 5 made of nitrile rubber and silicone rubber also has a good corrosion resistance effect. In summary, by setting the expansion component 3, it can be expanded and installed according to different wellbore inner diameters, with greater flexibility. By setting the elastic sleeve 5, it can cooperate with the expansion component 3 to fit tightly with the wellbore inner diameter to improve the sealing effect.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0026] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A sulfur-proof packer for an oil well, comprising a main body (1), characterized in that: The main body (1) is provided with slots (2), the slots (2) are evenly distributed on the side wall of the main body (1) and are in the shape of a five-pointed star, the main body (1) is provided with a support assembly (3), the support assembly (3) is provided with an arc plate (4), and the arc plate (4) is sleeved with an elastic sleeve (5).

2. The sulfur-resistant packer for oil wells according to claim 1, characterized in that: The expansion assembly (3) includes a large gear (6), which is connected to the main body (1) through a bearing. The main body (1) is provided with arc grooves (7) and five groups are evenly arranged. A plug plate (8) is slidably connected in the slot (2). A cylindrical pin (9) is fixed on the plug plate (8), and the cylindrical pin (9) is arranged in the arc groove (7).

3. The anti-sulfur packer for oil wells according to claim 2, characterized in that: One group of the slots (2) is fixedly connected to an extension plate (10) on its side, the extension plate (10) is provided with a motor seat (11), a motor (12) is fixedly connected to the motor seat (11), an output end of the motor (12) passes through the extension plate (10), a small gear (13) is further provided at the output end of the motor (12), the large gear (6) is meshed with the small gear (13), and an end of the slot (2) is fixedly connected to an arc-shaped plate (4).

4. The anti-sulfur packer for oil wells according to claim 2, characterized in that: The top of the cylindrical pin (9) is fixedly connected to a limiting cap (14).

5. The anti-sulfur packer for oil wells according to claim 2, characterized in that: The main body (1), the slot (2), the inserting plate (8) and the curved plate (4) are made of AISI 316L stainless steel.

6. The sulfur-resistant packer for oil wells according to claim 1, characterized in that: The elastic sleeve (5) is made of a composite material of nitrile rubber and silicone rubber.

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