Outer cylinder dismounting tool

Abstract

The utility model relates to the technical field of petroleum drilling underground testing instruments, in particular to an outer cylinder disassembling tool. The outer cylinder disassembling tool comprises an outer ring, the outer ring plays a connecting role, and the rear end of the outer ring is connected with a baffle and a puller; and a fixing bolt is mounted on the outer surface of the outer ring. According to the tool, the outer cylinder of a part can be quickly disassembled, the disassembling time can be shortened by 2 / 3, the tool utilizes the principle of a puller, only one operator is needed to manually rotate a handle of the puller, and labor is greatly saved; and in the whole dismounting process, the outer barrel is slowly driven to exit from the gamma framework through rotation of threads of the puller, and in the dismounting mode, the outer barrel and the gamma framework are not in contact with force in the radial direction, and the inner sealing face of the outer barrel and the sealing face, matched with the outer barrel, on the gamma framework cannot be damaged.

Description

Technical Field

[0001] This invention relates to the field of downhole testing instruments for oil drilling, and in particular to a tooling for disassembling an outer cylinder. Background Technology

[0002] Currently, in horizontal well drilling, the use of rotary steerable systems plays a crucial role in reservoir development. Azimuth gamma rays are essential tools for identifying oil-bearing formations and determining whether an oil-bearing formation is from the upper or lower layer during on-site drilling. After on-site drilling, the outer casing needs to be disassembled for maintenance. On-site, a chain clamp is used to hold the outer casing in place, and someone assists by pushing the clamp lever to slowly remove it. However, this method is time-consuming and labor-intensive. The clamp teeth can easily damage the surface of the outer casing, as well as the inner sealing surface and the mating sealing surface on the gamma ray frame. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides an outer cylinder disassembly fixture, which enables rapid disassembly of the outer cylinder.

[0005] (II) Technical Solution

[0006] To solve the above problems, the present invention provides an outer cylinder disassembly fixture, comprising:

[0007] The outer ring has a baffle and a puller connected at its rear end; fixing bolts are installed on the outer surface of the outer ring. Multiple friction plates are installed between the bushing and the threaded sleeve to reduce resistance.

[0008] Preferably, the fixing bolt and the outer ring are connected by threads.

[0009] Preferably, the wire baffle and the outer ring are made of 4145H material.

[0010] Preferably, the outer ring structure is hollow, with an outer ring stepped surface, and the outer circular surface has at least six threaded through holes for fixing the outer cylinder.

[0011] Preferably, the outer diameter of the baffle is smaller than the inner diameter of the inner hole of the outer ring.

[0012] Preferably, the front end of the rotating sleeve is milled into a hook shape, and the middle is milled into a space for hooking the middle rib of the outer cylinder. The rear end is connected and fixed to the ball screw with bolts.

[0013] Preferably, the sliding sleeve has two threaded holes in the middle position, which are connected and fixed to the front end of the handle by male thread.

[0014] (III) Beneficial Effects

[0015] The outer cylinder disassembly fixture introduced in this utility model can quickly disassemble the outer cylinder of the part, reducing the disassembly time by 2 / 3. This fixture utilizes the principle of a puller, requiring only one operator to manually rotate the handle of the puller, which is very labor-saving. Moreover, during the entire disassembly process, the outer cylinder is slowly pulled out of the gamma frame by the rotation of the puller's own thread. Under this disassembly method, there is no radial force contact between the outer cylinder and the gamma frame, which will not damage the inner sealing surface of the outer cylinder or the sealing surface on the gamma frame that mates with it. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the outer cylinder disassembly fixture of the present invention;

[0017] Figure 2 This is a perspective view of the main body of the outer cylinder disassembly fixture of the present invention.

[0018] Figure 3 This is a diagram illustrating the working process of the outer cylinder disassembly fixture of the present invention.

[0019] Figure 4 This is a schematic diagram of the outer ring structure of the present invention.

[0020] Among them, 1. outer ring; 2. fixing bolt; 3. baffle; 4. puller. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings. The purpose is only to facilitate the description of this invention and to simplify the description. It is not intended to indicate or imply that the component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0023] like Figure 1-2 As shown, the present invention provides an outer cylinder disassembly fixture, specifically including: an outer ring (1), the outer ring (1) serves as a connection, and the rear end of the outer ring (1) is connected to a baffle (3) and a puller (4); a fixing bolt (2) is installed on the outer surface of the outer ring (1).

[0024] It should be noted that the outer ring (1) and the fixing bolt (2) are connected by threads.

[0025] In this invention, six fixing bolts (2) are used and screwed into the threaded holes reserved in the outer ring (1) to fix the outer cylinder.

[0026] It should be noted that the baffle (3) is installed at the rear end of the puller (4), which is the support point of the puller (4) and the front end of the male thread that pushes the gamma skeleton when disassembling the outer cylinder.

[0027] In this invention, the push-pull rod 5 is inserted into the hole at the rear end of the ball screw 4, and is fixed at the tail end with a bolt M6X10 coated with thread adhesive. The front end of the bolt M6X10 locks the groove in the middle of the push-pull rod 5 to prevent the push-pull rod 5 from moving during operation.

[0028] In this invention, the outer ring (1) is made of 4145H material to avoid deformation during operation.

[0029] In this invention, the outer ring (1) is hollow, with an outer ring stepped surface, and the outer circular surface has at least six threaded through holes.

[0030] In this invention, the outer diameter of the baffle (3) is smaller than the inner diameter of the inner hole of the outer ring (1).

[0031] In this invention, the handle on the left side of the puller (4) is rotated until the right side of the baffle (3) contacts the stepped surface of the left thread front end of the gamma skeleton (5). Then the handle is rotated slowly until the outer cylinder (6) is dislodged from the sealing surface of the gamma skeleton (5). Then the tooling is removed.

[0032] First, assemble the entire tooling according to the drawings. When disassembling the outer cylinder, put the outer ring (1) on the left side of the gamma frame (5). When the inner step surface of the outer ring (1) contacts the step surface on the left side of the outer cylinder (6), fix the 6 fixing bolts (2) in opposite directions. Then, hook the two front claws of the puller (4) onto the step surface on the left side of the outer ring (1). Then, rotate the handle on the left side of the puller (4). Stop when the right side of the baffle (3) contacts the step surface at the front end of the thread on the left side of the gamma frame (5). Then, continue to slowly rotate the handle. At this time, observe whether the outer cylinder (6) moves to the left along with the outer ring (1). If they move synchronously, keep rotating. After the outer cylinder (6) is separated from the sealing surface of the gamma frame (5), remove the tooling. Then, one person can manually remove the outer cylinder. If the outer cylinder (6) does not move to the left with the outer ring (1) during disassembly, it means that the fixing bolt (2) does not hold the outer cylinder (6) tightly. In this case, the fixing bolt (2) should be reinforced again, and then the above operation can be repeated to quickly remove the outer cylinder (6).

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tooling for disassembling an outer cylinder, characterized in that, Include: The outer ring (1) is connected, the rear end of the outer ring (1) is connected with the baffle (3) and the puller (4); the outer surface of the outer ring (1) is provided with fixing bolts (2).

2. The outer cylinder dismounting tool according to claim 1, characterized in that The fixing bolt (2) is used six, which is screwed into the threaded hole reserved in the outer ring (1), which plays a role in fixing the outer cylinder.

3. The outer cylinder dismounting tool according to claim 1, wherein The baffle (3) is installed at the rear end of the puller (4), which is the supporting point of the puller (4) when disassembling the outer cylinder and the front end of the male thread of the gamma skeleton.

4. The outer cylinder dismounting tool according to claim 1, wherein The material of the outer ring (1) is made of 4145H to avoid deformation during work.

5. The outer cylinder dismounting tool according to claim 1, wherein The outer ring (1) is hollow, the outer surface is annular stepped surface, and the outer circular surface has at least six threaded holes.

6. The outer cylinder dismounting tool according to claim 1, wherein The outer diameter of the baffle (3) is smaller than the inner diameter of the inner hole of the outer ring (1).

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