Mechanical packer

Abstract

The utility model relates to the technical field of packers, in particular to a mechanical packer, which is characterized in that when a connecting thread is damaged, the whole driving rod does not need to be replaced, so that the waste of resources is avoided, and the maintenance cost is saved. Comprising a driving pipe, a sealing assembly and a locking mechanism are arranged on the left portion of the driving pipe, a driving rod is arranged in the driving pipe, a limiting clamping table is integrally and fixedly arranged at the right end of the driving rod, a connecting thread used for connection is arranged on the outer wall of a connecting column, a threaded butt joint column is fixedly arranged at the left end of the connecting column, and the threaded butt joint column and the connecting column are integrally formed; threaded butt joint holes are formed in the driving rod and the limiting clamping table, the threaded butt joint columns are installed on the driving rod and the limiting clamping table in a screwed mode through cooperation with the threaded butt joint holes, positioning holes are formed in the positions, close to the limiting clamping table, of the outer wall of the driving rod, positioning bolts are inserted into the positioning holes, and positioning screw holes are formed in the threaded butt joint columns. And the positioning bolt is screwed in the positioning screw hole.

Description

Technical Field

[0001] This utility model relates to the technical field of packers, and in particular to a mechanical packer. Background Technology

[0002] A packer is a downhole tool that is attached to the downhole tubing string and used to seal the annular space between the tubing and the casing or open hole of an oil or gas well.

[0003] The prior art, patent publication number CN215907812U, discloses a mechanical packer, including a drive tube, a sealing assembly, and a locking mechanism. The driving tube is a cylindrical cavity structure with open ends, and a drive rod is provided inside the driving tube. One end of the drive rod is connected to the locking mechanism. The locking mechanism includes a pressing platform, a sliding plate, a telescopic rod, and a limiting plate fixed on the drive rod. The sliding plate is fixed to the outer wall of the driving tube by the telescopic rod, and several limiting plates are provided on the sliding plate. The sealing assembly is a flexible rubber sleeve, and the sealing assembly is provided with at least three pieces, which can solve the problem of easy detachment when the existing water-filled packer is seated and locked.

[0004] However, the mechanical packer in the aforementioned patented technology has the following drawbacks when in use. In this packer, a limiting plate and a connecting thread are provided at the right end of the drive rod. This structure is an integral structure. When the connecting thread is damaged due to impact and cannot be connected, the entire drive rod needs to be replaced. However, other parts of the drive rod are not damaged, which results in a waste of resources and affects maintenance costs. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a mechanical packer that eliminates the need to replace the entire drive rod when the connecting thread is damaged, thus avoiding waste of resources and saving maintenance costs.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mechanical packer, comprising a drive tube and a connecting assembly. The left side of the drive tube is provided with a sealing assembly and a locking mechanism. A drive rod is provided inside the drive tube. A limiting plate is integrally fixed at the right end of the drive rod. The connecting assembly includes a connecting post. The outer wall of the connecting post is provided with a connecting thread for connection. A threaded mating post is fixed at the left end of the connecting post. The threaded mating post is integrally formed with the connecting post. Threaded mating holes are provided on the drive rod and the limiting plate. The threaded mating post is screwed onto the drive rod and the limiting plate by mating with the threaded mating holes. The left end of the connecting post abuts against the right end of the limiting plate. A positioning hole is provided on the outer wall of the drive rod near the limiting plate, communicating with the threaded mating hole. A positioning bolt is inserted into the positioning hole. A positioning screw hole is provided on the threaded mating post, and the positioning bolt is screwed into the positioning screw hole.

[0008] Preferably, the positioning holes, positioning bolts, and positioning screw holes are all provided in three sets, and the three sets of positioning holes are distributed in a ring at equal intervals on the outer wall of the drive rod near the limiting plate. The three sets of positioning bolts are inserted into the drive rod by cooperating with the positioning holes, and the three sets of positioning screw holes are distributed in a ring at equal intervals on the threaded mating post. The three sets of positioning bolts are screwed into the three sets of positioning screw holes respectively.

[0009] Preferably, all three sets of positioning holes are countersunk holes, and all three sets of positioning bolts are internal hexagonal bolts.

[0010] Preferably, spring washers are fitted on all three sets of positioning bolts.

[0011] Preferably, the right end of the connecting column has an internal hexagonal groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the connecting thread on the outer wall of the connecting column is damaged due to bumps during carrying or handling, the positioning hole can be unscrewed from the positioning screw hole first, and then the threaded mating column can be rotated counterclockwise through the connecting column to disengage the threaded mating column from the threaded mating hole, thereby disassembling the connecting column and replacing it with a new one. The detachable structure eliminates the need to replace the entire drive rod, avoiding waste of resources and saving maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the present invention;

[0015] Figure 3 This is a partial isometric sectional view of the present invention.

[0016] Figure 4This is an exploded isometric view of the connection component and the drive rod in this utility model.

[0017] Figure 5 This is a left-side partial isometric structural diagram of the connection between the drive rod and the limiting plate in this utility model;

[0018] The following are labels in the attached diagram: 1. Drive tube; 2. Sealing assembly; 3. Locking mechanism; 4. Drive rod; 5. Limiting plate; 6. Connecting post; 7. Connecting thread; 8. Threaded mating post; 9. Threaded mating hole; 10. Positioning hole; 11. Positioning bolt; 12. Positioning screw hole; 13. Spring washer; 14. Internal hexagonal groove. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] Example

[0021] Please see Figures 1-5 This utility model discloses a mechanical packer, comprising a drive tube 1, a sealing assembly 2 and a locking mechanism 3 on the left side of the drive tube 1, a drive rod 4 inside the drive tube 1, a limiting plate 5 integrally fixed on the right end of the drive rod 4, a connecting thread 7 on the outer wall of a connecting column 6 for connection, a threaded mating column 8 fixed on the left end of the connecting column 6, the threaded mating column 8 being integrally formed with the connecting column 6, threaded mating holes 9 on the drive rod 4 and the limiting plate 5, the threaded mating column 8 being screwed onto the drive rod 4 and the limiting plate 5 through the mating holes 9, and the left end of the connecting column 6 abutting against the right end of the limiting plate 5, the outer wall of the drive rod 4 near the limiting plate 5 being connected to... The threaded mating hole 9 is connected to a positioning hole 10, in which a positioning bolt 11 is inserted. The threaded mating post 8 has a positioning screw hole 12, in which the positioning bolt 11 is screwed. In use, if the connecting thread 7 on the outer wall of the connecting post 6 is damaged due to impact during carrying or handling, the positioning hole 10 can be unscrewed from the positioning screw hole 12. Then, the threaded mating post 8 can be rotated counterclockwise through the connecting post 6 to disengage it from the threaded mating hole 9, thereby removing the connecting post 6 and replacing it with a new one. The detachable structure eliminates the need to replace the entire drive rod, avoiding resource waste and saving maintenance costs.

[0022] The positioning holes 10, positioning bolts 11, and positioning screw holes 12 are all provided in three sets. The three sets of positioning holes 10 are distributed equidistantly in a ring on the outer wall of the drive rod 4 near the limiting plate 5. The three sets of positioning bolts 11 are inserted into the drive rod 4 by cooperating with the positioning holes 10. The three sets of positioning screw holes 12 are distributed equidistantly in a ring on the threaded docking post 8. The three sets of positioning bolts 11 are screwed into the three sets of positioning screw holes 12 respectively. With the three sets of positioning holes 10, positioning bolts 11, and positioning screw holes 12 arranged equidistantly in a ring, after the threaded docking post 8 is tightened, the three sets of positioning holes 10 are exactly aligned with the three sets of positioning screw holes 12 respectively. At this time, the positioning bolts 11 are passed through the positioning holes 10 and screwed into the positioning screw holes 12 to further fix the threaded docking post 8. The equidistant distribution in a ring makes the threaded docking post 8 more secure and stable, effectively preventing the threaded docking post 8 from loosening and improving the connection strength between the threaded docking post 8 and the threaded docking hole 9.

[0023] All three sets of positioning holes 10 are countersunk, and all three sets of positioning bolts 11 are hexagonal socket bolts. By making the positioning holes 10 countersunk and using hexagonal socket bolts, the bolt heads can be sunk into the positioning holes 10, so that the positioning bolts 11 can be installed in place and there will be no protrusions on the outer wall of the drive rod 4.

[0024] All three sets of positioning bolts 11 are fitted with spring washers 13. By setting the spring washers 13, after the positioning bolts 11 are screwed into the positioning screw holes 12 and tightened, the cooperation of the spring washers 13 can effectively prevent the positioning bolts 11 from loosening, making the positioning bolts 11 more secure and reliable.

[0025] The right end of the connecting post 6 is provided with an internal hexagonal groove 14; by providing the internal hexagonal groove 14, it is easy to use a hexagonal wrench to rotate the connecting post 6, making the connecting post 6 easier and less labor-intensive to assemble and disassemble.

[0026] The working principle of this utility model of a mechanical packer is as follows: When the connecting thread 7 on the outer wall of the connecting column 6 is damaged due to impact during carrying or handling, the positioning hole 10 can be unscrewed from the positioning screw hole 12 first, and then the threaded docking column 8 can be rotated counterclockwise through the connecting column 6 to disengage the threaded docking column 8 from the threaded docking hole 9, thereby removing the connecting column 6 and replacing it with a new one. During installation, the threaded docking column 8 is first tightened into the threaded docking hole 9, so that the three sets of positioning holes 10 are aligned with the three sets of positioning screw holes 12 respectively, and then the positioning bolt 11 is tightened into the positioning screw hole 12 to complete the installation.

[0027] The mechanical packer of this utility model has common mechanical installation, connection or setting methods, and can be implemented as long as it can achieve the beneficial effect. The drive tube, sealing assembly, locking mechanism, drive rod and limit plate in this utility model are all referenced from a mechanical packer with patent publication number CN215907812U, which belongs to the disclosed prior art. Its specific structure and working principle have been described in detail in the patent, so this application will not repeat it in too much detail.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mechanical packer, comprising a driving pipe (1), the left part of the driving pipe (1) is provided with a sealing assembly (2) and a locking mechanism (3), the inside of the driving pipe (1) is provided with a driving rod (4), the right end of the driving rod (4) is integrally provided with a limiting card table (5), characterized in that, The connecting assembly further comprises a connecting column (6) provided with connecting threads (7) on the outer wall of the connecting column (6) for connection, a threaded butt joint column (8) fixedly arranged at the left end of the connecting column (6), the threaded butt joint column (8) being integrally formed with the connecting column (6), a threaded butt joint hole (9) arranged on the driving rod (4) and the limiting clamping table (5), the threaded butt joint column (8) being screwed on the driving rod (4) and the limiting clamping table (5) through cooperation with the threaded butt joint hole (9), and the left end of the connecting column (6) abutting against the right end of the limiting clamping table (5), a positioning hole (10) arranged at the position of the outer wall of the driving rod (4) close to the limiting clamping table (5) and in communication with the threaded butt joint hole (9), and a positioning bolt (11) inserted into the positioning hole (10), and a positioning screw hole (12) arranged on the threaded butt joint column (8) and in which the positioning bolt (11) is screwed. The positioning hole (10), the positioning bolt (11) and the positioning screw hole (12) are all arranged in three groups, the three groups of positioning holes (10) being annularly and equidistantly arranged at the position of the outer wall of the driving rod (4) close to the limiting clamping table (5), the three groups of positioning bolts (11) being inserted into the driving rod (4) through cooperation with the positioning holes (10), and the three groups of positioning screw holes (12) being annularly and equidistantly arranged on the threaded butt joint column (8), the three groups of positioning bolts (11) being screwed into the three groups of positioning screw holes (12) respectively.

2. A mechanical packer as defined in claim 1, wherein The three groups of positioning holes (10) are all arranged in a counterbore structure, and the three groups of positioning bolts (11) are all arranged in an inner hexagonal structure.

3. A mechanical packer according to claim 2, wherein, A spring washer (13) is sleeved on each of the three groups of positioning bolts (11).

4. A mechanical packer according to claim 3, wherein: An inner hexagonal groove (14) is arranged at the right end of the connecting column (6).

5. A mechanical packer according to claim 4, wherein, ​

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