Packer type deflector

Abstract

The present application discloses an isolation type deflector, which belongs to the field of well drilling and repair technology. The isolation type deflector includes a deflector body and a packer body. The deflector body includes an inclined iron and a first sealing anchoring device, and the first sealing anchoring device includes a first outer cylinder and a center pipe located in the first outer cylinder, a first piston body and a first slip. The packer body includes a second sealing anchoring device and a packer assembly, and the second sealing anchoring device includes a second outer cylinder and a center connecting rod located in the second outer cylinder, a second piston body and a second slip, and the packer assembly includes a base and a rubber tube ring. By arranging the first sealing anchoring device, the second sealing anchoring device and the rubber tube ring located between the base and the second sealing anchoring device, the sealing of the well wall can be achieved while the isolation type deflector is set.

Description

Technical Field

[0001] The present application relates to the technical field of well drilling and repairing, and in particular to an isolation type deflector. Background Art

[0002] Side drilling technology is an important technical means to tap the potential and increase production of old oil fields. Side drilling technology has been widely promoted and applied in the field of oil development at home and abroad because it can reduce the cost of drilling adjustment wells, saving land acquisition, road construction and oil production surface engineering. The deflector is an indispensable tool for implementing side drilling.

[0003] A commonly used deflector includes a tubular feeder, with a deflector slant iron and a sealing anchor device connected in sequence at the lower end of the feeder, a liquid guide pipe connecting the inner hole of the feeder and the inner cavity of the sealing anchor device is arranged in the deflector slant iron, and a packer is connected to the lower end of the sealing anchor device, and a packer ring made of a material that swells when exposed to oil and water is arranged on the packer. The packer ring is used to automatically swell when encountering oil and water after drilling to seal the old wellbore, avoiding leakage, well kick and even blowout during side drilling due to the connection between the old wellbore and the formation, and also eliminating the risk of the formation of the new wellbore being connected to the old wellbore when side drilling, achieving permanent well sealing and meeting the requirements of side drilling to seal the old wellbore.

[0004] However, the process of automatic expansion of the isolation ring made of oil- and water-swelling materials when encountering oil and water takes a long time, generally requiring 48-72 hours to achieve a sealing effect, resulting in low production efficiency of the oil well. Summary of the invention

[0005] The present application provides an isolation type deflector, which can solve the problem of low production efficiency of oil wells caused by using isolation rings made of oil and water swelling materials to seal wells. The technical solution is as follows:

[0006] Provided is a packer-type deflector, comprising: a deflector body and a packer body;

[0007] The whipstock body includes a whipstock and a first setting anchoring device, wherein the first setting anchoring device includes a first outer tube and a center tube located inside the first outer tube, a first piston body and a first slip.

[0008] The first piston body is located between the center tube and the first outer tube, a first inclined surface is provided on a side of the first piston body away from the center tube, the first slip is located on the first inclined surface, a first opening is provided on the first outer tube, and the first slip is configured to move radially along the center tube through the first opening when the first piston body moves in the axial direction of the center tube away from the packer body;

[0009] The packer body comprises a second setting anchor device and a packer assembly, wherein the packer assembly is located on a side of the second setting anchor device away from the deflector body, the second setting anchor device comprises a second outer cylinder and a center connecting rod, a second piston body and a second slip located in the second outer cylinder, and the packer assembly comprises a base and a rubber cylinder ring.

[0010] The second piston body is located between the central connecting rod and the second outer cylinder, a second inclined surface is provided on the side of the second piston body away from the central connecting rod, the second slip is located on the second inclined surface, a second opening is provided on the second outer cylinder, and the second slip is configured to move radially along the central connecting rod through the second opening when the second piston body moves along the axial direction of the central connecting rod toward a direction away from the deflector body.

[0011] The rubber sleeve ring is located between the base and the second setting anchor device, the base is fixedly connected to the center connecting rod, the rubber sleeve ring is sleeved on the center connecting rod, and the rubber sleeve ring is configured to deform radially along the center connecting rod under the pressure of the second piston body when the second piston body moves along the axial direction of the center connecting rod in a direction away from the deflector body;

[0012] The first outer tube, the second outer tube and the central connecting rod are fixedly connected via a sealing joint, a pressure storage chamber is formed between the first piston body and the second piston body, and the central tube is connected to the pressure storage chamber.

[0013] Optionally, a pressure cap is provided at one end of the center connecting rod close to the deflector body, and the pressure cap is configured to limit the second piston body in the axial direction of the center connecting rod.

[0014] Optionally, a push rod is provided between the sealing assembly and the second piston body, one end of the push rod abuts against the rubber tube ring, and the push rod is configured to move along the axial direction of the center connecting rod away from the deflector body when the second piston body moves along the axial direction of the center connecting rod to apply pressure to the rubber tube ring.

[0015] Optionally, the push rod is connected to the second outer cylinder via a first shear pin.

[0016] Optionally, the first slip is connected to the first piston body via a second shear pin.

[0017] Optionally, the second slip is connected to the second piston body via a third shear pin.

[0018] Optionally, the deflector body further comprises a first locking member, the first locking member being located between the first piston body and the first outer tube, the first locking member being configured to restrict the first piston body from moving only in the axial direction of the central tube in a direction away from the packer body.

[0019] Optionally, the packer body further comprises a second locking member, the second locking member being located between the second piston body and the second outer tube, the second locking member being configured to restrict the second piston body from moving only along the axial direction of the central connecting rod in a direction away from the deflector body.

[0020] Optionally, a first sealing ring is provided between the first piston body and the central tube, and / or a second sealing ring is provided between the first piston body and the first outer tube.

[0021] Optionally, a third sealing ring is provided between the second piston body and the central connecting rod, and / or a fourth sealing ring is provided between the second piston body and the second outer cylinder.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] By arranging the first setting seal anchor device, the second setting seal anchor device and the rubber sleeve ring between the base and the second setting seal anchor device, when the isolation type deflector is set, the first piston body in the first setting seal anchor device will move upward relative to the central pipe, thereby pushing the first slip to move radially along the central pipe through the first opening, so that the first slip is stuck on the well wall. At the same time, the second piston body in the second setting seal anchor device moves downward relative to the central connecting rod, thereby pushing the second slip to move radially along the central connecting rod through the second opening, and the second piston body moves downward The movement will squeeze the rubber ring, thereby achieving the sealing of the well wall while realizing the sealing of the isolation type deflector; and, by providing the first locking piece, after the first piston body moves upward relative to the first outer tube, the first piston body will not move downward due to the effect of its own gravity, thereby improving the sealing reliability of the deflector body; in addition, by providing the second locking piece, after the second piston body moves downward relative to the second outer tube, the second piston body will not move upward due to the elastic effect of the rubber ring, thereby improving the sealing reliability of the isolation type deflector body and the reliability of the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the full cross-section structure of a packing-type deflector provided in an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the full cross-section structure of another type of sealed deflector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0027] Figure 1 Schematic diagram of the full cross-section structure of a packing type deflector provided in the embodiment of the present application. Figure 1 As shown, the packer type deflector includes a deflector body and a packer body. The deflector body includes a deflector iron 10 and a first setting anchor device 20.

[0028] The first setting and anchoring device 20 includes a first outer cylinder 201 , and a central pipe 202 , a first piston body 203 , and a first slip 204 located inside the first outer cylinder.

[0029] See also Figure 1 The inclined iron 10, the first outer cylinder 201 and the central tube 202 are fixedly connected by a connector L. The deflector body also includes a feeder (not shown in the figure), and the lower end of the feeder is sequentially connected to the inclined iron 10 and the first setting anchor device 20. The inclined iron 10 is provided with a channel connecting the inner hole of the feeder and the central tube 202.

[0030] Optionally, the connecting member L has an internal thread and an external thread, the connecting member L is fixedly connected to the central tube 202 via the internal thread, and the connecting member L is fixedly connected to the first outer tube 201 via the external thread.

[0031] The first piston body 203 is located between the central tube 202 and the first outer tube 201. The first piston body 203 is fitted with the central tube 202 and the first outer tube 201 respectively.

[0032] Optionally, a first sealing ring 30 is provided between the first piston body 203 and the central tube 202 , and / or a second sealing ring 40 is provided between the first piston body 203 and the first outer tube 201 .

[0033] The first sealing ring 30 can be arranged at one end of the first piston body 203 close to the packer body. By arranging the first sealing ring 30 between the first piston body 203 and the central tube 202, it is possible to prevent liquid from entering between the first piston body 203 and the central tube 202 during the anchoring process, thereby ensuring the reliability of the liquid applying pressure to the first piston body 203.

[0034] The second sealing ring 40 can be arranged at one end of the first piston body 203 close to the packer body. By arranging the second sealing ring 40 between the first piston body 203 and the first outer cylinder 201, it is possible to prevent liquid from entering between the first piston body 203 and the first outer cylinder 201 during the anchoring process, thereby ensuring the reliability of the liquid applying pressure to the first piston body 203.

[0035] See also Figure 1 A first inclined surface is provided on the side of the first piston body 203 away from the central tube 202, and the first slip 204 is located on the first inclined surface. A first opening A is provided on the first outer cylinder 201, and the first slip 204 is configured to move radially along the central tube through the first opening A when the first piston body 203 moves in the axial direction of the central tube 202 away from the packer body.

[0036] Optionally, the first slip 204 is connected to the first piston body 203 by a shear nail 50. The first slip 204 is a radial slip. The first setting anchor device 20 may include a plurality of first slips 204 arranged circumferentially, for example, may include three first slips 204 arranged equidistantly along the circumferential direction.

[0037] In the embodiment of the present application, the first slip 204 is clamped in the first opening A. Before the packing-type deflector is set, since the first slip 204 is connected to the first piston body 203 by the shear nail 50, the first piston body 203 is limited in the axial direction of the center tube 202 under the fixing action of the shear nail 50, so that the first piston body 203 cannot move along the axial direction of the center tube 202. During the setting process of the packing-type deflector, the first piston body 203 will be subjected to an upward force. At this time, the shear nail 50 connecting the first slip 204 and the first piston body 203 is sheared off, and the first piston body 203 moves upward. During the upward movement of the first piston body 203, the first inclined surface pushes the first slip 204 outward, so that the first slip 204 moves radially along the center tube 202 through the first opening A, and then the first slip 204 is clamped on the well wall, and then the setting of the deflector body can be completed.

[0038] Optionally, the deflector body further includes a first locking member 60, which is located between the first piston body 203 and the first outer tube 201, and is configured to limit the first piston body 203 to move only along the axial direction of the central tube 202 in a direction away from the packer body.

[0039] Optionally, the first locking member 60 includes a locking spring 601 and a locking tooth block 602. One of the locking spring 601 and the locking tooth block 602 is fixedly arranged on the first piston body 203, and the other is fixedly arranged on the inner wall of the first outer cylinder 201. The interaction between the locking spring 601 and the locking tooth block 602 enables the first piston body 203 to move only in the direction away from the packer body along the axial direction of the central tube 202, but not in the direction close to the packer body.

[0040] In the embodiment of the present application, by providing the first locking piece, when the first piston body moves upward relative to the first outer tube, the first piston body will not move downward due to its own gravity, thereby improving the sealing reliability of the deflector body.

[0041] See also Figure 1 The packer body includes a second setting anchor device 70 and a packer assembly 80. The packer assembly 80 is located on a side of the second setting anchor device 70 away from the deflector body.

[0042] The second setting anchoring device 70 comprises a second outer cylinder 701 and a central connecting rod 702, a second piston body 703 and a second slip 704 located in the second outer cylinder 701. The second piston body 703 is located between the central connecting rod 702 and the second outer cylinder 701.

[0043] The second piston body 703 is located between the central connecting rod 702 and the second outer cylinder 701. The second piston body 703 is fitted with the central connecting rod 702 and the second outer cylinder 701 respectively.

[0044] Optionally, a third sealing ring 90 is disposed between the second piston body 703 and the central connecting rod 702 , and / or a fourth sealing ring 100 is disposed between the second piston body 703 and the second outer cylinder 701 .

[0045] The third sealing ring 90 can be arranged at one end of the second piston body 703 close to the deflector body. By arranging the third sealing ring 90 between the second piston body 703 and the central connecting rod 702, it is possible to prevent liquid from entering between the second piston body 703 and the central connecting rod 702 during the anchoring process, thereby ensuring the reliability of the liquid applying pressure to the second piston body 703.

[0046] The fourth sealing ring 100 can be arranged at one end of the second piston body 703 close to the deflector body. By arranging the fourth sealing ring 100 between the second piston body 703 and the second outer cylinder 701, it is possible to prevent liquid from entering between the second piston body 703 and the second outer cylinder 701 during the anchoring process, thereby ensuring the reliability of the liquid applying pressure to the second piston body 703.

[0047] See also Figure 1 A second inclined surface is provided on the side of the second piston body 703 away from the central connecting rod 702, and the second slip 704 is located on the second inclined surface. A second opening B is provided on the second outer cylinder 701, and the second slip 704 is configured to move radially along the central connecting rod 702 through the second opening B when the second piston body 703 moves along the axial direction of the central connecting rod 702 in a direction away from the deflector body.

[0048] Optionally, the second slip 704 is connected to the second piston body 703 by a shear pin 110. The second slip 704 is a radial slip. The second setting anchor device 70 may include a plurality of second slips 704 arranged circumferentially, for example, may include three second slips 704 arranged equidistantly along the circumferential direction.

[0049] In the embodiment of the present application, the second slip 704 is clamped in the second opening B. Before the packer is set, since the second slip 704 is connected to the second piston body 703 by the shear nail 110, the second piston body 703 is limited in the axial direction of the center connecting rod 702 under the fixing action of the shear nail 110, so that the second piston body 703 cannot move along the axial direction of the center connecting rod 702. During the setting process of the packer, the second piston body 703 will be subjected to a downward force. At this time, the shear nail 110 connecting the second slip 704 and the second piston body 703 is sheared off, and the second piston body 703 moves downward. During the downward movement of the second piston body 703, the second inclined surface pushes the second slip 704 outward, so that the second slip 704 moves radially along the center connecting rod 702 through the second opening B, and then the second slip 704 is clamped on the well wall to complete the setting of the packer body.

[0050] See also Figure 1 The packing assembly 80 includes a base 801 and a rubber ring 802. The rubber ring 802 is located between the base 801 and the second setting anchor device 70. The base 801 is fixedly connected to the center connecting rod 702. The rubber ring 802 is sleeved on the center connecting rod 702. The rubber ring 802 is configured to deform radially along the center connecting rod 702 under the pressure of the second piston body 703 when the second piston body 703 moves along the axial direction of the center connecting rod 702 in a direction away from the deflector body.

[0051] In the embodiment of the present application, the rubber ring is located between the base and the second sealing anchor device, and the base is fixed on the center connecting rod. When the second piston body moves downward, the second piston body will squeeze the rubber ring, so that the rubber ring can be deformed along the radial direction of the center connecting rod, and then the rubber ring can be tightly attached to the well wall, so that the sealing of the well wall can be achieved while achieving the sealing of the seal body.

[0052] Optionally, the packer body further includes a second locking member 120, which is located between the second piston body 703 and the second outer tube 701, and is configured to limit the second piston body 703 to move only along the axial direction of the central connecting rod 702 in a direction away from the deflector body.

[0053] Optionally, the second locking member 120 includes a locking spring 1201 and a locking tooth block 1202. One of the locking spring 1201 and the locking tooth block 1202 is fixedly arranged on the second piston body 703, and the other is fixedly arranged on the inner wall of the second outer cylinder 701. The interaction between the locking spring 1201 and the locking tooth block 1202 enables the second piston body 703 to move only in the direction away from the deflector body along the axial direction of the central connecting rod 702, but not in the direction close to the deflector body.

[0054] In the embodiment of the present application, a second locking piece is provided so that when the second piston body moves downward relative to the second outer cylinder, the second piston body will not move upward due to the elastic action of the rubber ring, thereby improving the sealing reliability of the packer body and allowing the rubber ring to be continuously subjected to pressure to maintain radial deformation along the center connecting rod 2, thereby improving the sealing reliability.

[0055] See also Figure 1 The first outer tube 201, the second outer tube 701 and the central connecting rod 702 are fixedly connected via a sealing joint 130. A pressure storage chamber C is formed between the first piston body 203 and the second piston body 703. The central tube 202 is connected to the pressure storage chamber C.

[0056] In the embodiment of the present application, when the isolation-type incline guide is sealed, a liquid with a certain pressure can be injected from the center tube by using a hydraulic pressure device, and the liquid will flow from the center tube into the pressure storage chamber. When the pressure of the liquid flowing into the pressure storage chamber increases, the first piston body will tend to move upward under the action of the liquid pressure, and at the same time, the second piston body will tend to move downward under the action of the liquid pressure. As the liquid pressure further increases, under the action of the liquid pressure, the shear pins used to fix the first cava and the first piston body are sheared off, and the first piston body moves upward. During the upward movement of the first piston body, the first inclined surface pushes the first cava outward, so that the first cava moves radially along the central pipe through the first opening, and then the first cava is stuck on the well wall, thereby completing the setting of the guide bevel body; at the same time, the shear pins used to fix the second cava and the second piston body are sheared off, and the second piston body moves downward. During the downward movement of the second piston body, the second inclined surface pushes the second cava outward, so that the second cava moves radially along the central connecting rod through the second opening, and then the second cava is stuck on the well wall. Under the pushing action of the second piston body, the push rod can push the rubber sleeve ring to move downward, and then the rubber sleeve ring can be deformed radially along the central connecting rod, and then the rubber sleeve ring can be tightly attached to the well wall, and then the well wall can be sealed while the setting of the packer body is achieved.

[0057] The sealing joint 130 has an internal thread, a first external thread, and a second external thread. The sealing joint 130 is fixedly connected to the central connecting rod 702 through the internal thread, the sealing joint 130 is fixedly connected to the first outer cylinder 201 through the first external thread, and the sealing joint 130 is fixedly connected to the second outer cylinder 701 through the second external thread. A through hole connecting the central tube 202, the first piston body 203, and the second piston body 703 is provided inside the sealing joint 130, and the through hole is the above-mentioned pressure storage chamber C.

[0058] Optionally, a pressing cap 140 is provided at one end of the center connecting rod 702 close to the deflector body. The pressing cap 140 is configured to limit the second piston body 703 in the axial direction of the center connecting rod 702 to prevent the second piston body 703 from moving toward the deflector body during the transportation or use of the packer deflector.

[0059] Optionally, the central connecting rod 702 is connected to the pressing cap 140 via threads.

[0060] Optionally, see Figure 1 A push rod 150 is provided between the packing assembly 80 and the second piston body 703. One end of the push rod 150 abuts against the rubber ring 802, and the push rod 150 is configured to move along the axial direction of the central connecting rod 702 in a direction away from the deflector body when the second piston body 703 moves along the axial direction of the central connecting rod 702 in a direction away from the deflector body, so as to apply pressure to the rubber ring 802.

[0061] In the embodiment of the present application, during the sealing process of the isolation type incline guide, the second piston body moves downward, and the push rod also moves downward under the pushing action of the second piston body. The push rod can then push the rubber ring to move downward, so that the rubber ring can be deformed along the radial direction of the center connecting rod, and then the rubber ring can be tightly attached to the well wall, so that the sealing of the well wall can be achieved while the sealing of the isolation body is achieved.

[0062] Optionally, the central connecting rod 702 is connected to the base 801 via threads.

[0063] Optionally, the central connecting rod 702 includes a first connecting rod 7021 and a second connecting rod 7022, and the diameter of the first connecting rod 7021 is smaller than the diameter of the second connecting rod 7022. The first connecting rod 7021 and the second connecting rod 7022 are fixedly connected.

[0064] In the embodiment of the present application, since the diameter of the first connecting rod is smaller than that of the second connecting rod, the volume of the rubber ring arranged on the second connecting rod is reduced compared with the volume of the rubber ring arranged on the first connecting rod, thereby saving the material of the rubber ring.

[0065] Optionally, the push rod 150 is connected to the second outer cylinder 701 via a shear nail 160 .

[0066] In the embodiment of the present application, during the sealing process of the isolation type incline guide, the second piston body moves downward, and the push rod also tends to move downward under the pushing action of the second piston body. When the pressure further increases, the shear pins used to fix the push rod and the second outer tube are sheared off, so that the push rod can push the rubber tube ring to move downward, and the rubber tube ring can be deformed along the radial direction of the center connecting rod, so that the rubber tube ring can be tightly attached to the well wall, and the sealing of the well wall can be achieved while achieving the sealing of the isolation body.

[0067] The working principle of the packing type deflector provided in the embodiment of the present application is as follows:

[0068] When the packer is set, the packer can be sent to a predetermined position of the wellbore by using a drilling tool, and a liquid with a certain pressure is injected from the central pipe through a hydraulic pressure device, and the liquid flows from the central pipe into the pressure storage chamber. As the liquid pressure increases, the first piston body tends to move upward under the action of the liquid pressure, and the second piston body tends to move downward under the action of the liquid pressure.

[0069] like Figure 2 As shown, with the further increase of liquid pressure, under the action of liquid pressure, the shear nails for fixing the first cava and the first piston body are sheared off, and the first piston body moves upward. During the upward movement of the first piston body, the first inclined surface pushes the first cava outward, so that the first cava moves radially along the central pipe through the first opening, thereby causing the first cava to be stuck on the well wall, thereby completing the sealing of the incline guide body; at the same time, the shear nails for fixing the second cava and the second piston body are sheared off, and the second piston body moves downward. During the downward movement of the second piston body, the second inclined surface pushes the first cava outward, so that the first cava moves radially along the central pipe through the first opening, thereby causing the first cava to be stuck on the well wall, thereby completing the sealing of the incline guide body. The second slip is pushed outward, so that the second slip moves radially along the center connecting rod through the second opening, and then the second slip is stuck on the well wall. Under the pushing action of the second piston body, the push rod also tends to move downward. When the pressure increases further, the shear nails used to fix the push rod and the second outer cylinder are sheared off, so that the push rod can push the rubber tube ring to move downward, and then the rubber tube ring can be deformed radially along the center connecting rod, and then the rubber tube ring can be closely attached to the well wall, and then the well wall can be sealed while the packer body is set. That is, the well wall can be sealed while the packer body and the deflector body are set.

[0070] In summary, the isolation type deflector provided by the present application, by providing a first setting anchor device, a second setting anchor device and a rubber sleeve ring between the base and the second setting anchor device, when the isolation type deflector is set, the first piston body in the first setting anchor device will move upward relative to the center pipe, thereby pushing the first slip to move radially along the center pipe through the first opening, so that the first slip is stuck on the well wall. At the same time, the second piston body in the second setting anchor device will move downward relative to the center connecting rod, thereby pushing the second slip to move radially along the center connecting rod through the second opening. The downward movement of the second piston body will squeeze the rubber ring, thereby achieving the sealing of the well wall while realizing the sealing of the isolation type deflector; and, by providing the first locking piece, after the first piston body moves upward relative to the first outer tube, the first piston body will not move downward due to the effect of its own gravity, thereby improving the sealing reliability of the deflector body; in addition, by providing the second locking piece, after the second piston body moves downward relative to the second outer tube, the second piston body will not move upward due to the elastic effect of the rubber ring, thereby improving the sealing reliability of the isolation type deflector body and the reliability of sealing.

[0071] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0072] The term "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0073] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the concepts and principles of the present application should be included in the protection scope of the present application.

Claims

1. A packer-type deflector, characterized in that: include: The deflector body and the packer body; The whipstock body includes a whipstock and a first setting anchoring device, wherein the first setting anchoring device includes a first outer tube and a center tube located inside the first outer tube, a first piston body and a first slip. The first piston body is located between the center tube and the first outer tube, a first inclined surface is provided on a side of the first piston body away from the center tube, the first slip is located on the first inclined surface, a first opening is provided on the first outer tube, and the first slip is configured to move radially along the center tube through the first opening when the first piston body moves in the axial direction of the center tube away from the packer body; The packer body comprises a second setting anchor device and a packer assembly, wherein the packer assembly is located on a side of the second setting anchor device away from the deflector body, the second setting anchor device comprises a second outer cylinder and a center connecting rod, a second piston body and a second slip located in the second outer cylinder, and the packer assembly comprises a base and a rubber cylinder ring. The second piston body is located between the central connecting rod and the second outer cylinder, a second inclined surface is provided on the side of the second piston body away from the central connecting rod, the second slip is located on the second inclined surface, a second opening is provided on the second outer cylinder, and the second slip is configured to move radially along the central connecting rod through the second opening when the second piston body moves along the axial direction of the central connecting rod toward a direction away from the deflector body. The rubber sleeve ring is located between the base and the second setting anchor device, the base is fixedly connected to the center connecting rod, the rubber sleeve ring is sleeved on the center connecting rod, and the rubber sleeve ring is configured to deform radially along the center connecting rod under the pressure of the second piston body when the second piston body moves along the axial direction of the center connecting rod in a direction away from the deflector body; The first outer tube, the second outer tube and the central connecting rod are fixedly connected via a sealing joint, a pressure storage chamber is formed between the first piston body and the second piston body, and the central tube is connected to the pressure storage chamber.

2. The packing type deflector according to claim 1, characterized in that: A pressing cap is provided at one end of the center connecting rod close to the deflector body, and the pressing cap is configured to limit the second piston body in the axial direction of the center connecting rod.

3. The packing type deflector according to claim 1 or 2, characterized in that: A push rod is arranged between the sealing assembly and the second piston body, one end of the push rod is in contact with the rubber ring, and the push rod is configured to move along the axial direction of the center connecting rod toward a direction away from the deflector body when the second piston body moves along the axial direction of the center connecting rod toward a direction away from the deflector body, so as to apply pressure to the rubber ring.

4. The packing type deflector according to claim 3, characterized in that: The push rod is connected to the second outer cylinder via a first shear nail.

5. The packer-type deflector according to claim 1, characterized in that: The first slip is connected to the first piston body via a second shear pin.

6. The packer-type deflector according to claim 1, characterized in that: The second slip is connected to the second piston body via a third shear pin.

7. The packer-type deflector according to claim 1, characterized in that: The deflector body also includes a first locking member, which is located between the first piston body and the first outer tube, and is configured to limit the first piston body to move only in the axial direction of the central pipe away from the packer body.

8. The packer-type deflector according to claim 1, characterized in that: The packer body also includes a second locking member, which is located between the second piston body and the second outer tube, and is configured to limit the second piston body to move only along the axial direction of the central connecting rod in a direction away from the deflector body.

9. The packer-type deflector according to claim 1, characterized in that: A first sealing ring is provided between the first piston body and the central tube, and / or a second sealing ring is provided between the first piston body and the first outer tube.

10. The packer-type deflector according to claim 1, characterized in that: A third sealing ring is provided between the second piston body and the central connecting rod, and / or a fourth sealing ring is provided between the second piston body and the second outer cylinder.

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