Electrically-controlled oil-water well packer

Abstract

The invention discloses an electric control oil-water well packer, and relates to the field of packers.The electric control oil-water well packer comprises an outer barrel assembly used for stretching into a pipeline and a rubber barrel arranged on the outer barrel assembly and used for setting the pipeline, a supporting block is arranged on the rubber barrel, a sliding barrel is arranged on the outer barrel assembly in a sliding mode, and the supporting block is arranged on the sliding barrel. A convex block is arranged on the sliding cylinder; after the rubber sleeve expands to seal the pipeline in a setting mode, the protruding block abuts against the side, close to the central axis of the outer cylinder assembly, of the supporting block. According to the electrically-controlled oil-water well packer, the supporting block is arranged on the rubber barrel, the sliding barrel is slidably arranged on the outer barrel assembly, the protruding block is arranged on the peripheral face of the sliding barrel, and after the rubber barrel expands to set a pipeline, the protruding block abuts against the side, close to the central axis of the outer barrel assembly, of the supporting block; and supporting is carried out from the inner sides of the supporting blocks, so that the rebound amplitude of the rubber barrel is reduced as much as possible, and the stability of the rubber barrel during setting can be improved.

Description

Technical Field

[0001] The invention relates to the field of packers, and in particular to an electrically controlled oil and water well packer. Background Art

[0002] As is known, an oil well pipeline packer is a device used for oil and gas production, which is mainly used to isolate the fluid in the well, prevent the fluids between different layers from mixing with each other, and ensure the safety and efficiency of the production process. The packer is usually installed in the pipeline of the oil well so that the flow of the fluid can be controlled when necessary.

[0003] For example, the Chinese patent document with the authorization announcement number CN221590945U, the announcement date 2024-08-23, and the name "A digital electric packer" includes an inner cylinder assembly, an outer cylinder assembly, a liquid inlet valve assembly and a control assembly. The inner cylinder assembly is provided with a central flow passage. The outer cylinder assembly is sleeved on the outer edge of the inner cylinder assembly, and a hydraulic rubber cylinder is provided on the outer edge of the outer cylinder assembly. A liquid inlet channel is provided between the inner cylinder assembly and the outer cylinder assembly. When liquid is injected into the hydraulic rubber cylinder, the hydraulic rubber cylinder expands. The liquid inlet valve assembly includes a driving member, a transmission mechanism and a liquid inlet valve. The liquid inlet valve includes a valve core and a valve seat. The valve seat is arranged in the liquid inlet channel, and the valve core is connected to the driving member through a transmission mechanism. The driving member is electrically connected to the control assembly, and the control assembly is used to control the movement of the driving member based on the control instruction to open or close the liquid inlet valve. The digital electric packer provided by the utility model can improve the reliability of setting and unsealing.

[0004] The disadvantage of the above-mentioned prior art is that the expandable packer only relies on the medium inside to support the rubber sleeve to fit the inner wall of the pipeline. Since the rubber sleeve and the medium are prone to deformation, a gap may appear between the packer and the pipeline, that is, this method will result in unreliable sealing. Summary of the invention

[0005] The object of the present invention is to provide an electrically controlled oil and water well packer to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: An electrically controlled oil and water well packer comprises an outer cylinder assembly for extending into a pipeline and a rubber cylinder arranged on the outer cylinder assembly for sealing the pipeline, wherein a support block is arranged on the rubber cylinder, a sliding cylinder is slidably arranged on the outer cylinder assembly, and a convex block is arranged on the sliding cylinder; After the rubber cylinder expands to seal the pipeline, the projection abuts against a side of the support block close to the center axis of the outer cylinder assembly.

[0007] In the above-mentioned electrically controlled oil and water well packer, the convex block is provided with an arc surface.

[0008] For the above-mentioned electric control packer for oil and water wells, an inlet is provided on the outer cylinder assembly, and the sliding cylinder is communicated with the inlet.

[0009] For the above-mentioned electric control packer for oil and water wells, a groove is provided on the outer cylinder assembly, and the groove is communicated with the inlet.

[0010] For the above-mentioned electric control packer for oil and water wells, an instantaneous pushing assembly for pushing the sliding cylinder to slide is arranged between the outer cylinder assembly and the sliding cylinder.

[0011] For the above-mentioned electric control packer for oil and water wells, the instantaneous pushing assembly includes an elastic telescopic rod, and two ends of the elastic telescopic rod are respectively rotatably connected to the sliding cylinder and the outer cylinder assembly.

[0012] For the above-mentioned electric control packer for oil and water wells, a wedge-shaped portion is provided on the support block, and the convex block abuts against the wedge-shaped portion.

[0013] For the above-mentioned electric control packer for oil and water wells, a limiting portion is provided on the support block, and an avoidance groove adapted to the limiting portion is provided on the sliding cylinder.

[0014] For the above-mentioned electric control packer for oil and water wells, a blocking plate is slidably arranged on the outer cylinder assembly, and the blocking plate has a first position for blocking the inlet and a second position for opening the inlet; It further includes a driving member for driving the blocking plate to switch between the first position and the second position.

[0015] For the above-mentioned electric control packer for oil and water wells, there are two blocking plates, and the two blocking plates are respectively arranged corresponding to the two inlets.

[0016] In the above technical solution, for the electric control packer for oil and water wells provided by the present invention, a support block is arranged on the rubber cylinder, a sliding cylinder is slidably arranged on the outer cylinder assembly, and a convex block is arranged on the outer peripheral surface of the sliding cylinder. After the rubber cylinder expands to set the pipe, the convex block abuts against the side of the support block close to the central axis of the outer cylinder assembly and supports from the inside of the support block, so as to minimize the rebound amplitude of the rubber cylinder, thereby improving the stability of the rubber cylinder during setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention; Figure 2 It is a schematic diagram of the process of the rubber cylinder from unsealing to setting provided by the embodiment of the present invention; Figure 3 It is a schematic diagram of the sectional structure provided by the embodiment of the present invention; Figure 4 It is a schematic diagram of the sectional structure from another perspective provided by the embodiment of the present invention; Figure 5 It is a schematic diagram of the connection structure between the sliding cylinder and the convex block provided by the embodiment of the present invention; Figure 6 It is a schematic diagram of the partial sectional structure provided by another embodiment of the present invention; Figure 7 It is a schematic diagram of the partial sectional structure provided by still another embodiment of the present invention; Figure 8 It is Figure 3 a schematic diagram of the enlarged partial structure at position A in

[0019] Explanation of the reference numerals: 1. Outer cylinder assembly; 2. Rubber cylinder; 3. Support block; 4. Sliding cylinder; 5. Convex block; 6. Sealing groove; 7. Arc surface; 8. Inlet; 9. Groove; 10. Elastic telescopic rod; 11. Installation groove; 12. Rotating seat; 13. Wedge part; 14. Hollow area; 15. Limiting part; 16. Avoidance groove; 17. Sealing plate; 18. First abutting part; 19. Second abutting part; 20. Elastic member; 21. Activity groove; 22. Slide groove; 23. Pipeline. Detailed implementation manners

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0021] In the description of the present invention, it should be understood that taking Figure 5 the position of the convex block 5 relative to the wedge part 13 as up, and vice versa as down, the orientation or positional relationship indicated by the terms "center", "length", "width", "degree", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Refer to Figures 1-8, A packer for oil and water wells controlled by electricity provided by an embodiment of the present invention includes an outer cylinder assembly 1 for extending into a pipeline 23 and a rubber cylinder 2 provided on the outer cylinder assembly 1 for setting the pipeline 23 in a seated position. A support block 3 is provided on the rubber cylinder 2. A sliding cylinder 4 is slidably provided on the outer cylinder assembly 1, and a convex block 5 is provided on the sliding cylinder 4; After the rubber cylinder 2 expands to set the pipeline 23 in a seated position, the convex block 5 abuts against one side of the support block 3 close to the central axis of the outer cylinder assembly 1 (hereinafter referred to as the central axis for the convenience of description).

[0023] Specifically, the outer cylinder assembly 1 is used in cooperation with an inner cylinder assembly (not shown) and is located outside the inner cylinder assembly. The rubber cylinder 2 is cylindrical and is provided on the outer peripheral surface of the outer cylinder assembly 1. It has elasticity and the ability to self-recover after deformation. A gap for a medium (which can be water or air) to enter is provided between the rubber cylinder 2 and the outer cylinder assembly 1. When sealing the pipeline 23, the medium is injected into the gap through an existing hydraulic system, which will cause the rubber cylinder 2 to expand and store energy for the rubber cylinder 2. When the outer peripheral surface of the rubber cylinder 2 is in close contact with the inner wall of the pipeline 23, the pipeline 23 is blocked, thereby realizing the sealing of the pipeline 23. After the sealing is completed, the power provided by the hydraulic system is released, and the elastic force of the rubber cylinder 2 is released, causing the rubber cylinder 2 to contract inward. At this time, a gap is generated between the rubber cylinder 2 and the pipeline 23 to realize the unsealing of the packer. This is the prior art and will not be elaborated. For details, refer to the patent document with the authorization announcement number CN221590945U previously applied by the applicant. One of the core innovations of the embodiment of the present invention is that a support block 3 is provided on the rubber cylinder 2. The support block 3 is preferably an arc-shaped block and preferably two groups. The two groups of support blocks 3 are symmetrically arranged with respect to the rubber cylinder 2. Each group of support blocks 3 is preferably four. The four support blocks 3 are arranged in an array on the inner wall of the rubber cylinder 2. A sealing groove 6 adapted to the support block 3 is provided on the outer cylinder assembly 1. The support block 3 is slidably and sealingly connected to the sealing groove 6, and the two groups of support blocks 3 are symmetrically arranged with respect to the rubber cylinder 2. A sliding groove 22 adapted to the sliding cylinder 4 is provided inside the outer cylinder assembly 1. The sliding cylinder 4 is slidably connected to the sliding groove 22, and a convex block 5 is provided on the outer peripheral surface of the sliding cylinder 4. The number and position of the convex block 5 are correspondingly arranged with respect to the number and position of the support block 3. The function of such a setting is that after the rubber cylinder 2 expands to set the pipeline 23 in a seated position, it will drive the support block 3 to slide towards the outside of the sealing groove 6. At this time, a gap will be generated between the support block 3 and the sliding cylinder 4. At this time, a reciprocating driving component such as an electric push rod is used to control the sliding cylinder 4 to slide along the axial direction of the outer cylinder assembly 1, so that the convex block 5 is inserted into the gap between the support block 3 and the sliding cylinder 4, so that the plurality of convex blocks 5 respectively abut against one side of the plurality of support blocks 3 close to the central axis, that is, the convex block 5 supports from the inside of the support block 3. At this time, the support block 3 can no longer slide into the sealing groove 6, so as to minimize the rebound amplitude of the rubber cylinder 2, thereby improving the stability of the rubber cylinder 2 when it is set in a seated position.

[0024] Preferably, an arc surface 7 is provided on the bump 5. Specifically, the arc surface 7 is provided at the edge position above the bump 5. The function of such a setting is that when the sliding distance of the support block 3 outward from the sealing groove 6 is not sufficient for the bump 5 to be inserted, at this time, the arc surface 7 on the bump 5 will abut against the edge position of the support block 3, thereby providing a thrust to the support block 3 away from the central axis, so that the bump 5 can smoothly enter between the support block 3 and the sliding cylinder 4 for support.

[0025] Furthermore, an inlet 8 is provided on the outer cylinder assembly 1, and the sliding cylinder 4 communicates with the inlet 8. Specifically, the inlet 8 is close to the bottom end of the outer cylinder assembly 1, and preferably there are two of them. The bottom end of the sliding cylinder 4 is arranged in the inlet 8. That is, when the medium enters the inside of the inlet 8, it will contact the bottom end of the sliding cylinder 4. The function of such a setting is that in the initial process of setting the packer, since the bump 5 abuts against the lower surface of the support block 3, the bump 5 and the sliding cylinder 4 cannot slide upward. The pressure of the medium will cause the sliding cylinder 4 to have a tendency to slide upward, and the medium is injected between the rubber cylinder 2 and the outer cylinder assembly 1. As the medium is continuously filled, the rubber cylinder 2 will expand continuously, and the rubber cylinder 2 will drive the support block 3 to slide outward gradually. When the gap between the support block 3 and the sliding cylinder 4 is sufficient for the bump 5 to be inserted, the medium will push the sliding cylinder 4 upward so that the bump 5 can be passively inserted into the gap to realize its passive support for the support block 3. After the setting of the packer is completed, the pressure provided by the hydraulic system is cancelled, and a negative pressure is applied to the inside of the outer cylinder assembly 1. On the one hand, it can control the reverse sliding of the sliding cylinder 4 for resetting. On the other hand, it can accelerate the speed of the medium discharged from the gap between the rubber cylinder 2 and the outer cylinder assembly 1, thereby improving the speed of releasing the packer.

[0026] Preferably, a groove 9 is provided on the outer cylinder assembly 1, and the groove 9 communicates with the inlet 8. Specifically, there are multiple grooves 9, and the multiple grooves 9 are arranged in an array on the outer peripheral surface of the outer cylinder assembly 1, which can increase the area when the medium enters, thereby accelerating the entry of the medium into the gap between the rubber cylinder 2 and the outer cylinder assembly 1, and further accelerating the setting speed of the packer.

[0027] Further, an instantaneous pushing component for pushing the sliding cylinder 4 to slide is arranged between the outer cylinder component 1 and the sliding cylinder 4. The instantaneous pushing component includes an elastic telescopic rod 10, and two ends of the elastic telescopic rod 10 are respectively rotatably connected to the sliding cylinder 4 and the outer cylinder component 1. Specifically, an installation groove 11 is formed inside the side wall of the outer cylinder component 1. The elastic telescopic rod 10 also includes two sections that are slidably connected to each other, and an elastic component such as a spring is arranged between the two sections. Rotating seats 12 are arranged on the side wall of the installation groove 11 and the outer peripheral surface of the sliding cylinder 4. Two ends of the elastic telescopic rod 10 are respectively rotatably connected to the rotating seats 12 on the side wall of the installation groove 11 and the rotating seats 12 on the outer peripheral surface of the sliding cylinder 4. There are multiple elastic telescopic rods 10, and the multiple elastic telescopic rods 10 are arranged in an array on the outer peripheral surface of the sliding cylinder 4. Under the action of the connection between the elastic telescopic rod 10 and the rotating seat 12, the circumferential direction of the sliding cylinder 4 can be limited, that is, the sliding cylinder 4 cannot rotate relative to the outer cylinder component 1. The purpose of such a setting is that, as Figure 8 shown, when the elastic telescopic rod 10 is at point a, the elastic telescopic rod 10 is arranged obliquely downward, and it provides a vertically downward component force to the sliding cylinder 4, so that the convex block 5 is maintained below the support block 3 and does not contact the support block 3. When the support block 3 and the convex block 5 move away from each other, when the pressure of the medium is greater than the elastic force of the elastic telescopic rod 10, it will push the sliding cylinder 4 to slide upward. When the elastic telescopic rod 10 moves to point b, that is, at this time the elastic telescopic rod 10 is in a horizontal state, the acting force of the elastic telescopic rod 10 in the vertical direction on the sliding cylinder 4 disappears. At this time, under the continuous pressure of the medium, it will cause the elastic telescopic rod 10 to slide from point b to point c. At this time, the elastic telescopic rod 10 is arranged obliquely upward, and it will provide a vertically upward component force to the sliding cylinder 4. The advantages of such a setting are as follows: First, in cooperation with the pressure of the medium, it will cause the convex block 5 to move upward instantaneously to increase the speed at which the convex block 5 inserts into the gap between the support block 3 and the sliding cylinder 4. Second, it will cause the sliding cylinder 4 and the convex block 5 to maintain at this position so that the convex block 5 can stably support the support block 3. After the pipeline 23 is sealed off, a negative pressure operation is performed inside the outer cylinder component 1. Under the action of the negative pressure, the sliding cylinder 4 will receive a vertically downward acting force. When this acting force is greater than the elastic force of the elastic telescopic rod 10, it will cause the sliding cylinder 4 to slide downward. At this time, the end of the elastic telescopic rod 10 rotatably connected to the sliding cylinder 4 moves from point c to point b and finally moves to point c for reset. When the convex block 5 and the support block 3 move away from each other, the support block 3 is driven to reset under the action of the self-elastic force of the rubber cylinder 2.

[0028] It should be noted that the rubber cylinder 2 has a set state and an unsealing state. When it is in the set state, the bump 5 can improve its setting stability. To improve the stability of the rubber cylinder 2 in the unsealing state, as another embodiment of the present invention, a wedge portion 13 is provided on the support block 3, and the bump 5 abuts against the wedge portion 13. Specifically, a wedge surface is also provided on the bump 5. The function of such a setting is that when the rubber cylinder 2 changes from the set state to the unsealing state, the elastic telescopic rod 10 is at point a, and at this time, a vertically downward component force will be provided to the sliding cylinder 4. This component force causes the wedge surface of the bump 5 to abut against the wedge surface on the wedge portion 13, and provides a force to the wedge portion 13 and the support block 3 in a direction close to the central axis, so as to flexibly fix the support block 3 at this position, so that the rubber cylinder 2 will not expand randomly, thereby improving the stability of the packer during unsealing. When it is necessary to set again, and when the pressure of the medium is greater than the elastic force of the rubber cylinder 2 and the elastic force of the elastic telescopic rod 10, it will cause the support block 3 to slide in a direction away from the central axis, and make the wedge surface of the wedge portion 13 abut against the wedge surface of the bump 5, and lift the bump 5 up a small distance to achieve avoidance. When the rubber cylinder 2 changes from the set state to the unsealing state, if the elastic force of the rubber cylinder 2 cannot drive the support block 3 to reset to the initial position, at this time, under the action of the abutment of the wedge surface of the bump 5 and the wedge portion 13, it will drive the support block 3 to slide further in the direction of the central axis to assist the support block 3 to reset.

[0029] A hollow area 14 for accommodating the bump 5 is formed between the wedge portion 13 and the support block 3. When the sliding cylinder 4 drives the bump 5 to reset, if the rubber cylinder 2 recovers slowly, there will be a situation where the bump 5 directly crosses the opening of the hollow area 14. To avoid the bump 5 directly crossing the opening position of the hollow area 14, further, a limiting portion 15 is provided on the support block 3, and an avoidance groove 16 adapted to the limiting portion 15 is opened on the sliding cylinder 4. Specifically, the limiting portion 15 is a protruding structure provided on the wedge portion 13, and the avoidance groove 16 is opened on the outer peripheral surface of the sliding cylinder 4. The function of such a setting is that when the rubber cylinder 2 is in the set state, the limiting portion 15 is inserted into the avoidance groove 16. At this time, the limiting portion 15 is on the movement path of the bump 5, and at this time, the bump 5 cannot move further, so as to avoid the bump 5 directly crossing the opening position of the hollow area 14. When the support block 3 is reset, at this time, the bump 5 is inserted into the hollow area 14. Under the action of negative pressure and the elastic telescopic rod 10, the bump 5 will continue to move downward, and its wedge surface will abut against the wedge surface of the wedge portion 13 to achieve reset.

[0030] When the rubber cylinder 2 is set in place, it is necessary to maintain pressure through the hydraulic system all the time so that the rubber cylinder 2 remains in an expanded state. This way undoubtedly causes waste of power. As another embodiment of the present invention, a plugging plate 17 is slidably arranged on the outer cylinder assembly 1. The plugging plate 17 has a first position for plugging the inlet 8 and a second position for opening the inlet 8; and further includes a driving member for driving the plugging plate 17 to switch between the first position and the second position. Specifically, the plugging plate 17 is horizontally arranged and is preferably an arc-shaped plate. When the plugging plate 17 is in the first position, the plugging plate 17 plugs the inlet 8. When the plugging plate 17 is in the second position, the plugging plate 17 is away from the inlet 8. The driving member can also be an existing reciprocating driving assembly such as an existing electric push rod, and existing detection components such as a pressure sensor can be arranged on the rubber cylinder 2. The function of such a setting is that during the process of setting the rubber cylinder 2 in place, the plugging plate 17 is in the second position. When the pressure sensor senses that the pressure between the rubber cylinder 2 and the pipeline 23 is large enough, that is, at this time the rubber cylinder 2 is in close contact with the pipeline 23, the driving member is controlled to switch the plugging plate 17 from the second position to the first position. At this time, the inlet 8 can be plugged, and the medium between the rubber cylinder 2 and the outer cylinder assembly 1 will not flow out, so that the rubber cylinder 2 always remains in the set-in-place state. After the setting in place is completed, the plugging plate 17 is controlled to switch from the first position to the second position again so that the medium can flow out from the inlet 8 for subsequent unsealing.

[0031] Preferably, there are two plugging plates 17, and the two plugging plates 17 are respectively arranged corresponding to the two inlets 8. By arranging two plugging plates 17, the opening and closing of the two inlets 8 can be controlled respectively.

[0032] As an alternative to the above-mentioned cooperation control of the electric push rod and the pressure sensor to switch the plugging plate 17 between the first position and the second position, the driving member includes a first abutting portion 18 provided on the plugging plate 17, and a second abutting portion 19 is provided on the sliding cylinder 4. The first abutting portion 18 is located on the movement stroke of the second abutting portion 19, and an elastic member 20 is provided between the first abutting portion 18 and the outer cylinder assembly 1. Specifically, the first abutting portion 18 is a rod-shaped structure arranged vertically, and a wedge surface is also provided on the first abutting portion 18. An activity groove 21 is also opened inside the outer cylinder assembly 1. The elastic member 20 is preferably a spring, one end of which is fixedly connected to the side wall of the activity groove 21, and the other end is fixedly connected to the first abutting portion 18. When the second abutting portion 19 is away from the first abutting portion 18, the elastic force of the elastic member 20 causes the plugging plate 17 to be in the second position. The function of such a setting is that when the convex block 5 can be inserted into the gap between the support block 3 and the sliding cylinder 4, that is, when the medium filling between the rubber cylinder 2 and the outer cylinder assembly 1 is completed, the pressure of the medium at this time will cause the sliding cylinder 4 to slide upward. Under the action of the pressure of the medium and the elastic force of the elastic telescopic rod 10, the second abutting portion 19 is driven to abut against the wedge surface of the first abutting portion 18, so as to drive the plugging plate 17 to be passively switched from the second position to the first position and store energy for the elastic member 20. After the setting is completed, a negative pressure pumping operation is performed. Under the action of the negative pressure, the sliding cylinder 4 is driven to slide downward. When the second abutting portion 19 is away from the first abutting portion 18, the elastic force of the elastic member 20 is released, so as to passively switch the plugging plate 17 from the first position to the second position again, thus realizing the passive switching of the plugging plate 17 between the first position and the second position.

[0033] In summary, the sliding cylinder 4 and the convex block 5 have the following effects: First, when the rubber cylinder 2 is in the unsealing state, the convex block 5 abuts against the wedge portion 13, which can provide a force for the support block 3 and the rubber cylinder 2 in the direction of the central axis, so that they can be flexibly limited in this position to improve the stability during unsealing. Second, when the rubber cylinder 2 is in the setting state, the sliding cylinder 4 drives the convex block 5 to be inserted into the gap between the sliding cylinder 4 and the support block 3, which can provide a supporting force for the support block 3 and the rubber cylinder 2 away from the central axis to improve the stability during setting. Third, during the process of the rubber cylinder 2 switching from the unsealing state to the setting state, it will drive the second abutting portion 19 to abut against the first abutting portion 18 to realize the passive plugging of the inlet 8. Fourth, during the process of the rubber cylinder 2 switching from the setting state to the unsealing state, it will drive the second abutting portion 19 to be away from the first abutting portion 18 to realize the passive opening of the inlet 8.

[0034] Only certain exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electrically controlled oil and water well packer, comprising an outer cylinder assembly for extending into a pipeline and a rubber cylinder arranged on the outer cylinder assembly for sealing the pipeline, characterized in that: The rubber cylinder is provided with a support block, the outer cylinder assembly is slidably provided with a slide cylinder, and the slide cylinder is provided with a convex block; After the rubber cylinder expands to seal the pipeline, the projection abuts against a side of the support block close to the center axis of the outer cylinder assembly.

2. The electrically controlled oil and water well packer according to claim 1, characterized in that: The convex block is provided with an arc surface.

3. The electrically controlled oil and water well packer according to claim 1, characterized in that: The outer cylinder assembly is provided with two inlets, and the slide cylinder is communicated with the inlets.

4. The electrically controlled oil and water well packer according to claim 3, characterized in that: The outer cylinder assembly is provided with a groove, and the groove is communicated with the inlet.

5. The electrically controlled oil and water well packer according to claim 1, characterized in that: An instantaneous pushing component for pushing the slide cylinder to slide is arranged between the outer cylinder component and the slide cylinder.

6. The electrically controlled oil and water well packer according to claim 5, characterized in that: The instantaneous pushing assembly comprises an elastic telescopic rod, and two ends of the elastic telescopic rod are rotatably connected to the sliding cylinder and the outer cylinder assembly respectively.

7. An electrically controlled oil and water well packer according to claim 6, characterized in that: The support block is provided with a wedge-shaped portion, and the convex block abuts against the wedge-shaped portion.

8. The electrically controlled oil and water well packer according to claim 7, characterized in that: The support block is provided with a limiting portion, and the slide cylinder is provided with an avoidance groove matched with the limiting portion.

9. The electrically controlled oil and water well packer according to claim 3, characterized in that: A blocking plate is slidably disposed on the outer cylinder assembly, and the blocking plate has a first position for blocking the inlet and a second position for opening the inlet; It also includes a driving member for driving the blocking plate to switch between the first position and the second position.

10. An electrically controlled oil and water well packer according to claim 9, characterized in that: There are two blocking plates, and the two blocking plates are arranged corresponding to the two inlets respectively.

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