Well-flushing packer

Abstract

The utility model relates to the technical field of oil extraction devices in oil fields, in particular to a packer capable of washing a well. The well flushing packer comprises a packer body, and two symmetrically-distributed semi-arc-shaped protection plates are arranged outside a lower connector of the packer body in a sleeving mode. Mounting grooves are formed in the opposite faces of the two semi-arc-shaped protection plates, a plurality of evenly-distributed positioning grooves are formed in the mounting grooves, the same arc-shaped connecting plate is embedded between the mounting grooves in the two semi-arc-shaped protection plates, and a plurality of evenly-distributed positioning protruding strips are arranged on the inner wall of the arc-shaped connecting plate. And the outer walls of the positioning raised lines abut against the inner walls of the positioning grooves. According to the packer capable of washing the well, the connection stability of the two semi-arc-shaped protection plates can be improved by increasing the stress points of the connection of the two semi-arc-shaped protection plates, and therefore the protection effect of the packer capable of washing the well in later use can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield production devices, in particular to a washable well packer. Background Art

[0002] In the field of oilfield development, the packer is used in cooperation with a water distributor and other auxiliary tools to achieve layered water injection, maintain or restore the reservoir pressure, make the reservoir have a strong driving force, and improve the production rate and recovery rate of the reservoir.

[0003] There is a prior art washable well packer with the Chinese patent publication number CN221032522U. This packer mainly protects the outer side of the lower joint of the packer body by sleeving a first fastener and a second fastener on the lower joint part. The connection between the first fastener and the second fastener is fixed by simply screwing in self-tapping screws. All the bearing points of the connection between the first fastener and the second fastener act on the self-tapping screws. Its support nodes are small and the support strength is relatively weak. Therefore, during use, the first fastener and the second fastener are likely to separate and fall off due to unstable connection nodes, which will affect the overall protection effect.

[0004] Therefore, it is necessary to provide a new washable well packer to solve the above technical problems. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a washable well packer.

[0006] The washable well packer provided by the utility model includes: a packer body, and two symmetrically distributed semi-circular guard plates are sleeved outside the lower joint of the packer body;

[0007] Installation grooves are provided on the opposite surfaces of the two semi-circular guard plates. A number of uniformly distributed positioning grooves are formed inside the installation grooves. The same arc-shaped connecting plate is inlaid between the installation grooves in the two semi-circular guard plates. A number of uniformly distributed positioning convex strips are provided on the inner wall of the arc-shaped connecting plate, and the outer wall of the positioning convex strip abuts against the inner wall of the positioning groove.

[0008] Preferably, staggered slots and protrusions are further formed on the opposite surfaces of the two semi-circular guard plates, and the outer wall of the protrusion on one side semi-circular guard plate abuts against the inner wall of the slot on the other side semi-circular guard plate.

[0009] Preferably, magnetic blocks are provided at the ends of the protrusions and inside the slots, and the magnetic blocks at the ends of the protrusions and the magnetic blocks inside the slots have opposite magnetic polarities.

[0010] Preferably, a connection groove is formed inside the arc-shaped connecting plate, a through groove is formed at a position inside the semi-circular guard plate corresponding to the connection groove, and a limit pin connected by a thread is inserted into the through groove and the connection groove.

[0011] Preferably, a protective pad is arranged inside the semi-circular guard plate, and the inner wall of the protective pad abuts against the outer wall of the lower joint of the packer body.

[0012] Preferably, rubber strips for sealing are arranged on the opposite surfaces of the two semi-circular guard plates.

[0013] Preferably, the specifications of the butting inner walls of the two installation grooves are the same as those of the outer wall of the arc-shaped connecting plate.

[0014] Compared with the related art, the washable packer provided by the present utility model has the following beneficial effects:

[0015] 1. By increasing the stress points of the connection between the two semi-circular guard plates, the present utility model can improve the connection stability between the two, and thus can improve the protection effect of the device during later use.

[0016] 2. During installation, the present utility model can initially position the two semi-circular guard plates through the mutual adsorption of the magnets between the convex blocks and the slots, so as to avoid the phenomenon of misalignment and falling off of the two semi-circular guard plates after alignment during installation, and further improve the portability of the device during later installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a preferred embodiment of the washable packer provided by the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the semi-circular guard plate, the arc-shaped connecting plate and the limit pin shown in;

[0019] Figure 3 is Figure 2 a schematic structural diagram of the arc-shaped connecting plate shown in;

[0020] Figure 4 is Figure 2 a schematic structural diagram of the semi-circular guard plate shown in;

[0021] Figure 5 is Figure 2 a schematic structural diagram of the limit pin shown in.

[0022] Reference numerals in the figures: 1. Packer body; 11. Lower joint; 2. Semi-circular guard plate; 21. Installation groove; 22. Positioning groove; 23. Slot; 24. Convex block; 25. Through groove; 3. Arc-shaped connecting plate; 31. Positioning rib; 32. Connection groove; 4. Limit pin; 5. Protective pad. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] The following describes the specific implementation of the present utility model in detail with reference to specific embodiments.

[0025] Please refer to Figures 1 to 5 , a washable well packer provided by an embodiment of the present utility model, the washable well packer includes: a packer body 1.

[0026] In an embodiment of the present utility model, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , two symmetrically distributed semi-circular guard plates 2 are sleeved outside the lower joint 11 of the packer body 1; mounting grooves 21 are provided on the opposite surfaces of the two semi-circular guard plates 2, and a plurality of uniformly distributed positioning grooves 22 are formed inside the mounting grooves 21. The same arc-shaped connecting plate 3 is embedded between the mounting grooves 21 of the two semi-circular guard plates 2. A plurality of uniformly distributed positioning protrusions 31 are provided on the inner wall of the arc-shaped connecting plate 3, and the outer wall of the positioning protrusion 31 abuts against the inner wall of the positioning groove 22.

[0027] It should be noted that: by connecting the two semi-circular guard plates 2 with the arc-shaped connecting plate 3, and by the abutment of a plurality of protruding positioning protrusions 31 on the inner wall of the arc-shaped connecting plate 3 with the positioning grooves 22, the connection stress points of the two semi-circular guard plates 2 can be increased, and thus the connection stability of the two can be improved. Therefore, during the later use of the device, the connection part of the two semi-circular guard plates 2 can be prevented from being broken by external forces, resulting in the detachment of the two semi-circular guard plates 2. Therefore, the two semi-circular guard plates 2 can be sleeved on the packer body 1, and thus the protection effect of the two semi-circular guard plates 2 during the later use of the device can be improved.

[0028] In an embodiment of the present utility model, please refer to Figure 2 , Figure 3 and Figure 4 , the opposite surfaces of the two semi-circular guard plates 2 are also provided with staggered slots 23 and protrusions 24. The outer wall of the protrusion 24 on one side semi-circular guard plate 2 abuts against the inner wall of the slot 23 on the other side semi-circular guard plate 2. Magnets are provided at the end of the protrusion 24 and inside the slot 23, and the magnets at the end of the protrusion 24 and the magnets inside the slot 23 have opposite magnetic polarities.

[0029] It should be noted that during installation, the two semi-circular guard plates 2 can be initially positioned by the mutual adsorption of the magnets between the bumps 24 and the slots 23. Therefore, it can be avoided that the two semi-circular guard plates 2 are misaligned and fall off after alignment during installation, thereby improving the portability of the later installation of the device.

[0030] In an embodiment of the present invention, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 , a connection groove 32 is formed inside the arc-shaped connecting plate 3, a through groove 25 is formed at a position inside the semi-circular guard plate 2 opposite to the connection groove 32, and a limit pin 4 connected by threads is inserted into the through groove 25 and the connection groove 32.

[0031] It should be noted that: through the setting of the limit pin 4, during the installation process, after the limit pin 4 is screwed into the through groove 25 and the connection groove 32 through the thread structure, the connection between the semi-circular guard plate 2 and the arc-shaped connecting plate 3 can be fixed, and thus the arc-shaped connecting plate 3 can stably connect the two semi-circular guard plates 2 on both sides.

[0032] In an embodiment of the present invention, please refer to Figure 1 and Figure 2 , a protective pad 5 is provided inside the semi-circular guard plate 2, and the inner wall of the protective pad 5 abuts against the outer wall of the lower joint 11 of the packer body 1.

[0033] It should be noted that: through the setting of the protective pad 5, when installing the semi-circular guard plate 2, the contact part between the semi-circular guard plate 2 and the lower joint 11 of the packer body 1 can be protected. At the same time, the protective pad 5 can also deform when being subjected to the extrusion force during the installation process of the semi-circular guard plate 2, filling the connection part between the semi-circular guard plate 2 and the packer body 1, thereby improving the installation stability of the semi-circular guard plate 2.

[0034] In an embodiment of the present invention, rubber strips for sealing (not shown) are provided on the opposite surfaces of the two semi-circular guard plates 2.

[0035] It should be noted that: through the setting of the sealing rubber strips, when the semi-circular guard plates 2 are assembled and installed, when the sealing rubber strips on the opposite surfaces of the two semi-circular guard plates 2 are deformed under the extrusion force, the connection part between the two semi-circular guard plates 2 can be filled and sealed, so the sealing effect after the assembly of the semi-circular guard plates 2 can be improved.

[0036] In an embodiment of the present invention, please refer to Figure 2 and Figure 3 , the specifications of the butting inner walls of the two installation grooves 21 are the same as the specifications of the outer wall of the arc-shaped connecting plate 3.

[0037] It should be noted that: After connecting the arc-shaped connecting plate 3 with the installation groove 21 in the later stage, the fitting of the arc-shaped connecting plate 3 and the semi-circular guard plate 2 can be made more regular, thereby improving the integral ring effect after the connection of the semi-circular guard plate 2.

[0038] The working principle of the washable well packer provided by the present utility model is as follows:

[0039] When using this device in the later stage, first, two semi-circular guard plates 2 can be taken out and clamped outside the lower joint 11 of the packer body 1. At this time, the bumps 24 in the two semi-circular guard plates 2 can be inserted into the slots 23 in the opposite semi-circular guard plates 2. Then, through the mutual adsorption of the end parts of the bumps 24 and the magnets inside the slots 23, the two semi-circular guard plates 2 can be initially positioned and stably located outside the lower joint 11.

[0040] Then, the arc-shaped connecting plate 3 required for connection can be taken out and inserted into the installation grooves 21 of the two semi-circular guard plates 2. During this process, the positioning ribs 31 on the inner wall of the arc-shaped connecting plate 3 can abut against the positioning grooves 22 in the installation grooves 21. Then, the limit pin 4 can be taken out and screwed into the through grooves 25 and the connecting grooves 32 to complete the installation of the semi-circular guard plates 2 and the arc-shaped connecting plate 3. At this time, the two semi-circular guard plates 2 can be stably assembled through the arc-shaped connecting plate 3.

[0041] Due to the clamping between the multiple positioning ribs 31 inside the arc-shaped connecting plate 3 and the positioning grooves 22, the contact points of the connection between the arc-shaped connecting plate 3 and the semi-circular guard plate 2 can be increased. Therefore, when the two semi-circular guard plates 2 protect the lower joint 11 in the packer body 1 in the later stage, the phenomenon of the two semi-circular guard plates 2 falling off can be reduced, thereby improving the protection effect of the two semi-circular guard plates 2.

[0042] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A washable well packer, characterized in that, Comprising: A packer body (1), and two symmetrically distributed semi-circular guard plates (2) are sleeved outside the lower joint (11) of the packer body (1); Mounting grooves (21) are provided on the opposite surfaces of the two semi-circular guard plates (2), and a number of uniformly distributed positioning grooves (22) are formed inside the mounting grooves (21). An identical arc-shaped connecting plate (3) is inlaid between the mounting grooves (21) of the two semi-circular guard plates (2). A number of uniformly distributed positioning ridges (31) are provided on the inner wall of the arc-shaped connecting plate (3), and the outer wall of the positioning ridge (31) abuts against the inner wall of the positioning groove (22).

2. The washable well packer according to claim 1, characterized in that, Slots (23) and protrusions (24) are also formed on the opposite surfaces of the two semi-circular guard plates (2) in a staggered manner, and the outer wall of the protrusion (24) on one semi-circular guard plate (2) abuts against the inner wall of the slot (23) on the other semi-circular guard plate (2).

3. The washable well packer according to claim 2, characterized in that, Magnetic blocks are provided at the ends of the protrusions (24) and inside the slots (23), and the magnetic blocks at the ends of the protrusions (24) and the magnetic blocks inside the slots (23) have opposite magnetic polarities.

4. The washable well packer according to claim 1, characterized in that, A connecting groove (32) is formed inside the arc-shaped connecting plate (3), a through groove (25) is formed at a position inside the semi-circular guard plate (2) opposite to the connecting groove (32), and a limiting pin (4) connected by threads is inserted inside the through groove (25) and the connecting groove (32).

5. The washable well packer according to claim 1, wherein, A protective pad (5) is provided inside the semi-circular guard plate (2), and the inner wall of the protective pad (5) abuts against the outer wall of the lower joint (11) of the packer body (1).

6. The washable well packer according to claim 1, characterized in that, Rubber strips for sealing are provided on the opposite surfaces of the two semi-circular guard plates (2).

7. The washable well packer according to claim 1, characterized in that The specifications of the butt-jointed inner walls of the two mounting grooves (21) are the same as the specifications of the outer wall of the arc-shaped connecting plate (3).

Images