Setting tool

Abstract

The utility model discloses a setting tool which comprises a central pipe and a rubber sleeve assembly arranged on the central pipe, and the rubber sleeve assembly comprises a rubber sleeve, an upper taper sleeve, a driving assembly, a lower taper sleeve and a limiting seat. The rubber sleeve sleeves the outer side of the central pipe; the upper taper sleeve movably sleeves the outer side of the central pipe and is positioned above the rubber sleeve, and the lower end of the upper taper sleeve is in contact with the upper end of the rubber sleeve; the driving assembly is arranged above the upper taper sleeve and used for driving the upper taper sleeve to move downwards to extrude the upper end of the rubber sleeve; the lower taper sleeve movably sleeves the outer side of the central pipe and is positioned below the rubber sleeve, and the upper end of the lower taper sleeve is in contact with the lower end of the rubber sleeve; the limiting seat fixedly sleeves the outer side of the central pipe and is located below the lower taper sleeve, an air channel is formed in the limiting seat and is communicated with the interior of the central pipe, and the other end of the limiting seat is located below the lower taper sleeve and used for transmitting pressure in the central pipe to the position below the lower taper sleeve through the air channel, so that the lower taper sleeve moves upwards to extrude the lower end of the rubber sleeve. In conclusion, the utility model has the advantages of novel structure, convenience in use, safety, stability and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil well setting tools, in particular to a setting tool. Background Art

[0002] A setting tool is a device used in downhole operations in oil and gas wells. It is primarily used to set tools such as packers and bridge plugs in predetermined locations to achieve stratified production or containment of oil, gas, and water. The performance of the setting tool directly impacts the effectiveness and safety of downhole operations.

[0003] Explosive perforation is a common method used in oil and gas well development. Its purpose is to penetrate the formation, allowing oil and gas to flow into the wellbore. However, the shock waves generated by explosive perforation can affect downhole equipment, particularly packers. Packers isolate the wellbore during different operation phases, protecting the boundary between the oil and gas formation and the wellbore to prevent contamination and accidents. Explosive perforation can cause packer sealing and positioning failures, compromising operational safety and efficiency. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a setting tool that can further squeeze the rubber sleeve during perforation explosion, thereby increasing the sealing force between the rubber sleeve and the inner wall of the oil well and avoiding setting failure.

[0005] The technical solution of the utility model is: a setting tool, comprising a central tube and a rubber cartridge assembly arranged on the central tube, the rubber cartridge assembly comprising:

[0006] A rubber cylinder is sleeved on the outside of the central tube;

[0007] An upper cone sleeve, which is a movable sleeve arranged on the outside of the central tube, is located above the rubber cylinder, and the lower end of the upper cone sleeve is in contact with the upper end of the rubber cylinder;

[0008] A driving assembly is provided above the upper cone sleeve and is used to drive the upper cone sleeve to move downward to squeeze the upper end of the rubber cylinder;

[0009] A lower cone sleeve is movably arranged on the outside of the central tube, the lower cone sleeve is located below the rubber cylinder, and the upper end of the lower cone sleeve is in contact with the lower end of the rubber cylinder;

[0010] A limit seat and a fixed sleeve are arranged on the outside of the central tube. The limit seat is located below the lower cone sleeve. An air channel is provided in the limit seat. The air channel is connected to the inside of the central tube. The other end is located below the lower cone sleeve and is used to transmit the pressure in the central tube to the bottom of the lower cone sleeve through the air channel, so that the lower cone sleeve moves upward and squeezes the lower end of the rubber cylinder.

[0011] Furthermore, the driving assembly includes:

[0012] A piston cylinder is sleeved on the outside of the central tube, and the piston cylinder is located above the upper cone sleeve;

[0013] A piston rod is disposed in the piston cylinder, wherein the lower end of the piston rod contacts the upper end surface of the upper cone sleeve;

[0014] The micro plunger pump is arranged on the upper part of the piston cylinder and is used for pumping hydraulic oil into the piston cylinder.

[0015] Furthermore, a pressure plate is fixedly provided on the upper end of the upper cone sleeve, and the lower end of the piston rod is in contact with the upper surface of the pressure plate.

[0016] Furthermore, interception nets are provided at both ends of the airway.

[0017] Furthermore, an upper joint and a lower joint are respectively provided at the upper and lower ends of the central tube, the upper joint is connected to a release mechanism, and a ball throwing seat is provided on the inner side of the lower joint.

[0018] Furthermore, a slip assembly is provided on the outer side of the lower portion of the central pipe.

[0019] The working method of the utility model is as follows: the center tube is lowered into the target position in the oil well, the slip assembly is clamped on the inner wall of the oil well by pulling the center tube, and then a ball is thrown into the center tube to seal the ball-throwing sealing seat, and then hydraulic oil is pumped into the piston cylinder by a micro plunger pump to push the piston rod downward, and the piston rod pushes the upper cone sleeve to slide down, the squeeze rubber cylinder is deformed and expanded, and is squeezed and sealed with the inner wall of the oil well; when perforating the oil well, the pressure generated by the explosion acts on the pressure plate, driving the upper cone sleeve to continue to slide down and squeeze the rubber cylinder, and the pressure generated by the explosion will act on the inside of the center tube, enter the lower end of the lower cone sleeve through the airway, push the lower cone sleeve to slide up and squeeze the rubber cylinder, so that the rubber cylinder is further squeezed and deformed, and the sealing force with the inner wall of the oil well is enhanced, thereby avoiding sealing failure.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a sealing tool, which respectively sets an upper cone sleeve and a lower cone sleeve on the rubber cylinder, and uses a driving assembly to drive the upper cone sleeve downward, so that the rubber cylinder is squeezed and deformed, and is sealed with the inner wall of the oil well. A pressure plate is provided on the upper cone sleeve. When the perforating explosion occurs, the impact force generated acts on the pressure plate, which can push the upper cone sleeve to continue to move downward. An air channel is also provided below the lower cone sleeve, which can transfer the pressure in the central tube to the bottom of the lower cone sleeve, and transfer the impact force generated by the explosion to the bottom of the lower cone sleeve, pushing the lower cone sleeve upward, and can further squeeze the rubber cylinder during the explosion, thereby increasing the friction between the rubber cylinder and the inner wall of the oil well and avoiding failure of the sealing. In short, the present invention has the advantages of novel structure, easy use, safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 yes Figure 1 Enlarged view of part A;

[0023] Figure 3 yes Figure 1 Magnified view of part B.

[0024] Among them, 1. Center tube; 11. Upper joint; 12. Lower joint; 2. Rubber cylinder assembly; 21. Rubber cylinder; 22. Upper cone sleeve; 221. Pressure plate; 23. Drive assembly; 231. Piston cylinder; 232. Piston rod; 233. Micro plunger pump; 24. Lower cone sleeve; 25. Limit seat; 251. Air duct; 3. Release mechanism; 4. Ball throwing seat; 5. Cava assembly. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 To the attached Figure 3 , a detailed description of the specific embodiments of the present invention is provided. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0027] It should be noted that the circuit connections involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0028] Example: Figure 1 As shown, a setting tool includes a central tube 1 and a rubber cartridge assembly 2 arranged on the central tube 1.

[0029] The upper and lower ends of the central tube 1 are respectively provided with an upper joint 11 and a lower joint 12. The upper joint 11 is connected to the release mechanism 3. The inner side of the lower joint 12 is provided with a ball-dropping sealing seat 4. The outer side of the lower part of the central tube 1 is provided with a slip assembly 5.

[0030] The rubber cylinder assembly 2 includes a rubber cylinder 21, an upper cone sleeve 22, a driving assembly 23, a lower cone sleeve 24 and a limit seat 25. The rubber cylinder 21 is sleeved on the outside of the central tube 1; the upper cone sleeve 22 is movably sleeved on the outside of the central tube 1, the upper cone sleeve 22 is located above the rubber cylinder 21, and the lower end of the upper cone sleeve 22 contacts the upper end of the rubber cylinder 21; the driving assembly 23 is arranged above the upper cone sleeve 22, and is used to drive the upper cone sleeve 22 to move downward, squeezing the upper end of the rubber cylinder 21, such as Figure 2 As shown, the drive assembly 23 includes a piston cylinder 231, a piston rod 232 and a micro plunger pump 233; the piston cylinder 231 is sleeved on the outside of the central tube 1, and the piston cylinder 231 is located above the upper cone sleeve 22; the piston rod 232 is arranged in the piston cylinder 231, and the lower end of the piston rod 232 contacts the upper end surface of the upper cone sleeve 22, and the upper end of the upper cone sleeve 22 is fixedly provided with a pressure plate 221, and the lower end of the piston rod 232 contacts the upper surface of the pressure plate 221; the micro plunger pump 233 is arranged on the upper part of the piston cylinder 231, and the micro plunger pump 233 is used to pump hydraulic oil into the piston cylinder 231; the lower cone sleeve 24 is movably sleeved on the outside of the central tube 1, the lower cone sleeve 24 is located below the rubber cylinder 21, and the upper end of the lower cone sleeve 24 contacts the lower end of the rubber cylinder 21; the limit seat 25 is fixedly sleeved on the outside of the central tube 1, and the limit seat 25 is located below the lower cone sleeve 24, as shown Figure 3 As shown, an air channel 251 is provided in the limit seat 25, and the air channel 251 is connected to the inside of the central tube 1. The other end is located below the lower cone sleeve 24, which is used to transmit the pressure in the central tube 1 to the bottom of the lower cone sleeve 24 through the air channel 251, so that the lower cone sleeve 24 moves upward and squeezes the lower end of the rubber cylinder 21. Intercepting nets are provided at both ends of the air channel 251.

[0031] The working method of the above embodiment is as follows: the center pipe 1 is lowered into the target position in the oil well, the slip assembly 5 is clamped on the inner wall of the oil well by pulling up the center pipe 1, and then a ball is thrown into the center pipe 1 to seal the ball-throwing sealing seat 4, and then hydraulic oil is pumped into the piston cylinder 231 by the micro plunger pump 233 to push the piston rod 232 downward, and the piston rod 232 pushes the upper cone sleeve 22 to slide down, squeezing the rubber cylinder 21 to deform and expand, and squeeze and seal with the inner wall of the oil well; when perforating in the oil well, the pressure generated by the explosion acts on the pressure plate 221, driving the upper cone sleeve 22 to continue to slide down and squeeze the rubber cylinder 21, and the pressure generated by the explosion will act on the inside of the center pipe 1, and pass into the lower end of the lower cone sleeve 24 through the air channel 251, pushing the lower cone sleeve 24 to slide up and squeeze the rubber cylinder 21, so that the rubber cylinder 21 is further squeezed and deformed, and the sealing force with the inner wall of the oil well is enhanced to avoid sealing failure.

[0032] The specific models of the above electronic components are not specially specified, and ordinary products available on the market can be selected as long as they can meet the use requirements of the present utility model.

[0033] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above is only a specific embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A setting tool, comprising a central tube (1) and a rubber cartridge assembly (2) arranged on the central tube (1), characterized in that: The rubber cartridge assembly (2) comprises: A rubber cylinder (21) is sleeved on the outside of the central tube (1); An upper cone sleeve (22) is movably mounted on the outside of the central tube (1), the upper cone sleeve (22) is located above the rubber cylinder (21), and the lower end of the upper cone sleeve (22) is in contact with the upper end of the rubber cylinder (21); A driving assembly (23) is arranged above the upper cone sleeve (22) and is used to drive the upper cone sleeve (22) to move downward to squeeze the upper end of the rubber cylinder (21); A lower cone sleeve (24) is movably mounted on the outside of the central tube (1), the lower cone sleeve (24) is located below the rubber cylinder (21), and the upper end of the lower cone sleeve (24) is in contact with the lower end of the rubber cylinder (21); A limiting seat (25) is fixedly sleeved on the outside of the central tube (1). The limiting seat (25) is located below the lower cone sleeve (24). An air passage (251) is provided in the limiting seat (25). The air passage (251) is communicated with the interior of the central tube (1). The other end of the air passage (251) is located below the lower cone sleeve (24) and is used to transmit the pressure in the central tube (1) to the bottom of the lower cone sleeve (24) through the air passage (251), so that the lower cone sleeve (24) moves upward and squeezes the lower end of the rubber cylinder (21).

2. A setting tool according to claim 1, characterized in that: The drive assembly (23) comprises: A piston cylinder (231) is sleeved on the outside of the central tube (1), and the piston cylinder (231) is located above the upper cone sleeve (22); A piston rod (232) is disposed in the piston cylinder (231), and the lower end of the piston rod (232) contacts the upper end surface of the upper cone sleeve (22); A micro plunger pump (233) is arranged on the upper portion of the piston cylinder (231), and the micro plunger pump (233) is used to pump hydraulic oil into the piston cylinder (231).

3. A setting tool according to claim 2, characterized in that: A pressure plate (221) is fixedly provided on the upper end of the upper cone sleeve (22), and the lower end of the piston rod (232) contacts the upper surface of the pressure plate (221).

4. A setting tool according to claim 1, characterized in that: Interception nets are provided at both ends of the airway (251).

5. The setting tool according to claim 1, characterized in that: An upper joint (11) and a lower joint (12) are respectively provided at the upper and lower ends of the central tube (1); a hand-dropping mechanism (3) is connected to the upper joint (11); and a ball-dropping sealing seat (4) is provided on the inner side of the lower joint (12).

6. The setting tool according to claim 1, characterized in that: A slip assembly (5) is provided on the outer side of the lower portion of the central pipe (1).

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