Bridge type packer for synchronous injection and production in same well of horizontal well

Abstract

The bridge type packer comprises an upper connector, one end of the upper connector is connected with a flow dividing pipe in a screwed mode, an upper cover of the flow dividing pipe is connected with an upper outer pipe in a sleeved mode, one end of the upper outer pipe is connected and matched with the upper connector, and the portion, in the upper outer pipe, of the flow dividing pipe is connected with a well washing valve in a matched and sleeved mode. One end of the outer sleeve is screwed with a lock pipe, the lock pipe is connected and matched with a clamping seat, the outer side of the lock pipe is sleeved with a cushion, the clamping seat is sleeved with a bearing sleeve, one side of the bearing sleeve is connected with an upper hydraulic cylinder, and one side of the upper hydraulic cylinder is connected with a lower hydraulic cylinder; and a piston is arranged in the upper hydraulic cylinder. The packer has the advantages that in the oil extraction process of an oil well, setting, water injection and unsetting can be rapidly achieved, so that the use convenience is improved, the packer has the water injection cleaning function, the use practicability of the packer is improved, and later maintenance is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge type packers, and more specifically, to a bridge type packer used for synchronous injection and production in a horizontal well. Background Art

[0002] The bridge packer is used for stratified water finding, water plugging and oil testing in oilfield production operations. The synchronous injection and production of horizontal wells is based on key tools such as bridge water injection packers and bridge oil production mandrels, and other supporting tools to achieve the "one-stage injection and two-stage production" injection and production technology. Two bridge water injection packers and ordinary packers are used to divide the wellbore into three layers: upper, middle and lower. Relying on an external channel of a bridge water injection packer I, an external channel of a bridge oil production mandrel, another bridge water injection packer as an external channel, φ89mm oil pipe and φ48mm oil pipe annulus, the casing liquid is injected into the middle layer to achieve the purpose of middle layer water injection. The oil pump extracts the upper layer liquid connected to the bridge oil production mandrel and the lower layer liquid connected to the bottom soluble bottom valve through the bottom plug and φ48mm oil pipe, achieving the purpose of upper and lower layer oil production, which is enough to reflect the importance of bridge packers in oilfield production operations.

[0003] The utility model patent with patent application publication number CN209293741U discloses a bridge type packer, comprising an upper joint, the bottom end of the upper joint is threadedly connected with a center tube, the top end of the outer wall of the center tube is sleeved with an adjusting ring, the bottom end of the adjusting ring is sleeved with a rubber tube, three rubber tubes are provided, and a spacer ring is sleeved between two adjacent rubber tubes, the rubber tube is installed with a cone block, and the bottom end of the cone block is sleeved with a slip seat, and the upper and lower edges of the rubber tube of the bridge type packer are provided with rubber convex rings. After the rubber tube is squeezed, the oil pipe is squeezed by the rubber convex ring, so that the contact between the rubber tube and the oil pipe is tighter, and the sealing and oil pressure resistance effects are better. If the rubber tube is used for a long time, the service life is reduced, the deformation is reduced, and fine gaps appear, when oil enters the rubber tube, the oil absorption sponge strip will absorb and gather this part of the oil, thereby reducing the contact area between the outer side of the rubber tube and the oil, maintaining the friction between the rubber tube and the oil pipe, and making the packer more durable.

[0004] However, in actual use, this structure only improves the tightness of the contact between the rubber sleeve set in the packer and the inner wall of the oil pipe, thereby increasing the service life. However, the packer only realizes the sealing function and fixes the sealing position, but cannot inject water and clean the oil pipe, so other tools need to be equipped for cleaning. The functionality is not perfect enough. Therefore, a bridge packer for synchronous injection and production in horizontal wells is proposed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bridge packer for synchronous injection and production in horizontal wells to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge-type packer for synchronous injection and production in horizontal wells, comprising an upper joint, a shunt pipe is screwed on one end of the upper joint, an upper outer pipe is sleeved on the upper cover of the shunt pipe, one end of the upper outer pipe is connected and cooperated with the upper joint, a well washing valve is sleeved on the shunt pipe in the upper outer pipe, the other end of the upper outer pipe is cooperated and connected with an outer sleeve, a plurality of rubber tubes are sleeved on the outer sleeve, and spacer rings are arranged between each rubber tube, a locking tube is screwed on one end of the outer sleeve, the locking tube is connected and cooperated with a holder, a cushion is sleeved on the outside of the locking tube, a bearing sleeve is sleeved on the outside of the holder, an upper liquid cylinder is connected on one side of the bearing sleeve, a lower liquid cylinder is connected on one side of the upper liquid cylinder, a piston is arranged in the upper liquid cylinder, the other end of the shunt pipe is connected to the lower joint, one end of the lower joint is inserted in the lower liquid cylinder, and an adjusting ring is sleeved on the end where the lower liquid cylinder and the lower joint are connected.

[0007] After the packer is lowered to the set position of the oil well, the upper and lower hydraulic cylinders are started to push the bearing sleeve upward, and the bearing sleeve squeezes the cushion, so that the sealing shear pins are disconnected, and the cushion is separated from the locking tube. The cushion continues to squeeze the rubber cylinder isolated by the spacer ring on the outer casing, so that the rubber cylinder is compressed and expanded outward. Synchronously, during the process of the bearing sleeve pushing upward, it passes through the top of the card seat, so that the retaining spring installed on the card seat is locked with the locking groove on the inner wall of the bearing sleeve, thereby locking the position of the bearing sleeve, thereby achieving sealing, and then the upper The injection holes on the outer tube can be used for water injection, so that an annular water column is formed between the shunt tube and the outer casing. When producing oil, oil can be produced through the oil pipe connected to the upper joint and the lower joint at both ends of the shunt tube. When unsealing, the shunt tube is pulled up to disconnect the pin connecting the upper joint and the upper outer tube, thereby separating the upper joint and the upper outer tube. In the process of pulling up the shunt tube, a gap is generated between the upper joint and the upper outer tube, so that each rubber tube is separated from the inner wall of the wellbore due to elastic shrinkage, thereby achieving unsealing.

[0008] Preferably, a first inner screw ring is provided at one end of the upper joint, an annular nail groove is opened on the outside of the first inner screw ring, the first inner screw ring is connected and cooperated with one end of the shunt tube, and a thread hole is opened on the corresponding upper outer tube, a pin is installed in the thread hole, and the bottom end of the pin is inserted in the nail groove, and the upper joint and the upper outer tube are connected through the pin. When unsealing, the shunt tube is pulled up to connect the rubber tube to the inner wall of the wellbore, so that the pin is disconnected by force, thereby separating the upper joint and the upper outer tube, so that the rubber tube has a retraction space, and is detached from the inner wall of the wellbore and unsealed.

[0009] Preferably, a connector is screwed onto one end of the well flushing valve, and a sealing ring is sleeved at the connection between the well flushing valve and the connector. By providing a sealing ring between the connector and the well flushing valve, the sealing performance of the connection can be improved.

[0010] Preferably, a sealing ring is provided inside the upper outer tube, and the sealing ring is slidably matched with the shunt tube to seal the connection between the upper outer tube and the shunt tube to avoid liquid overflow.

[0011] Preferably, a first screw barrel is welded to one end of the outer sleeve, and the first screw barrel is screwed together with one end of the upper outer tube to facilitate the connection and fixation between the outer sleeve and the upper outer tube.

[0012] Preferably, a retaining ring is welded to the inner wall of one end of the seat cushion, and the retaining ring is slidably matched with the outer sleeve to increase the support area for the rubber cylinder and prevent the rubber cylinder from entering the gap between the seat cushion and the outer sleeve when it expands outward under pressure.

[0013] Preferably, the lower joint comprises a connecting pipe, and the connecting pipe is sleeved on the diverter pipe.

[0014] The outer screw ring is arranged on the connecting pipe and is screwed together with the adjusting ring.

[0015] By connecting the outer screw ring and the adjusting ring, the positions of the lower liquid cylinder and the upper liquid cylinder installed on the shunt pipe can be limited, so that the overall connection is matched.

[0016] Preferably, the lock tube includes a connecting tube, the connecting tube is inserted into the seat cushion, and the connecting tube is screwed together with one end of the outer sleeve.

[0017] The clamp head and the clamp head welding machine are on one side of the connecting tube, and the clamp head is locked and matched with the clamp seat.

[0018] Preferably, a card slot is provided on the connecting tube, a nail hole is provided on the seat cushion, a sealing shear pin is installed in the nail hole, and the bottom end of the sealing shear pin is inserted into the card slot.

[0019] By fixing the connecting tube in a position on the shunt pipe, when the bearing sleeve moves to seal, the connecting tube can block the movement of the holder, so that the retaining spring installed on the holder can be locked with the locking groove provided on the inner wall of the bearing sleeve, and when unsealing, the clamping head can drag the holder, so that the overall structure can be unsealed when the connection is tight.

[0020] Preferably, a third inner spiral ring is provided in the piston, and the third inner spiral ring is connected and cooperated with the diversion pipe.

[0021] Technical effects and advantages of the present invention:

[0022] 1. Through the arrangement of the upper liquid cylinder, the lower liquid cylinder, the bearing sleeve, the cushion, the spacer ring, the rubber tube, the clamping seat, the locking tube and the setting shear nails, compared with the prior art, the operation of the upper liquid cylinder and the lower liquid cylinder can make the cushion squeeze the rubber tube, so that the rubber tube expands outward due to compression to squeeze the inner wall of the wellbore, and the connection and cooperation between the clamping seat and the bearing sleeve are used to fix the position of the cushion to achieve setting, which can prevent the rubber tube from shrinking, thereby improving the fixity and sealing of the packer after setting. At the same time, after setting, water can be injected from the injection hole opened on the upper outer tube for cleaning;

[0023] 2. Through the arrangement of the upper joint, the upper outer tube, the nail groove and the pin, compared with the prior art, by pulling up the diversion tube, the pin connecting the upper joint and the upper outer tube can generate a force under the connection between the rubber tube and the inner wall of the wellbore, thereby breaking the pin and separating the upper joint and the upper outer tube. Combined with the elastic recovery of the rubber tube itself, automatic unsealing can be achieved, thereby improving the convenience of use and facilitating the later maintenance of the unsealed packer.

[0024] In summary, through the design of the packer of the present invention, it is possible to quickly achieve sealing, water injection and unsealing during oil well production, thereby improving the convenience of use, and enabling the packer to have a water injection and cleaning function, thereby improving the practicality of the packer and facilitating subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the packer of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper joint of the present invention.

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper outer tube of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the well flushing valve of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the connector of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the outer sleeve of the present invention.

[0032] Figure 8 It is a structural schematic diagram of a seat cushion of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the card holder of the present invention.

[0034] Fig.10 It is a structural schematic diagram of the upper liquid cylinder of the present invention.

[0035] Fig.11 It is a schematic diagram of the piston structure of the present invention.

[0036] Fig.12 It is a schematic diagram of the structure of the shunt pipe of the present invention.

[0037] Fig.13 It is a structural schematic diagram of the lower joint of the present invention.

[0038] The accompanying drawings are marked as follows: 1. upper joint; 2. upper outer tube; 3. outer sleeve; 4. rubber cylinder; 5. spacer ring; 6. cushion; 7. bearing sleeve; 8. upper liquid cylinder; 9. lower liquid cylinder; 10. adjusting ring; 11. lower joint; 1101. connecting pipe; 1102. outer screw ring; 12. diverter pipe; 13. well washing valve; 14. holder; 15. locking tube; 1501. connecting tube; 1502. clamping head; 16. piston; 17. nail groove; 18. first inner screw ring; 19. sealing ring; 20. connecting head; 21. first screw cylinder; 22. retaining ring; 23. third inner screw ring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] As attached Figure 1-13A bridge packer for synchronous injection and production in horizontal wells shown in the figure comprises an upper joint 1, one end of the upper joint 1 is screwed with a shunt pipe 12, the upper cover of the shunt pipe 12 is sleeved with an upper outer pipe 2, one end of the upper outer pipe 2 is connected and matched with the upper joint 1, the shunt pipe 12 in the upper outer pipe 2 is sleeved with a well washing valve 13, the other end of the upper outer pipe 2 is sleeved with an outer sleeve 3, a plurality of rubber tubes 4 are sleeved on the outer sleeve 3, and spacer rings 5 ​​are arranged between each rubber tube 4, one end of the outer sleeve 3 is screwed with a locking tube 15, the locking tube 15 is connected and matched with a clamping seat 14, a cushion 6 is sleeved on the outer side of the locking tube 15, a bearing sleeve 7 is sleeved on the outer side of the clamping seat 14, and an upper liquid cylinder 8 is connected to one side of the bearing sleeve 7, One side of the upper liquid cylinder 8 is connected to the lower liquid cylinder 9, a piston 16 is arranged in the upper liquid cylinder 8, the other end of the shunt tube 12 is connected to the lower joint 11, one end of the lower joint 11 is inserted in the lower liquid cylinder 9, and the end portion where the lower liquid cylinder 9 and the lower joint 11 are connected is sleeved with an adjusting ring 10, a sealing ring 19 is arranged inside the upper outer tube 2, the sealing ring 19 is slidably matched with the shunt tube 12, a first screw barrel 21 is welded to one end of the outer sleeve 3, the first screw barrel 21 is screwed and matched with one end of the upper outer tube 2, a retaining ring 22 is welded to the inner wall of one end of the seat cushion 6, the retaining ring 22 is slidably matched with the outer sleeve 3, a third inner screw ring 23 is arranged in the piston 16, and the third inner screw ring 23 is connected and matched with the shunt tube 12.

[0042] After the packer is lowered to the set position of the oil well, the upper hydraulic cylinder 8 and the lower hydraulic cylinder 9 are started to push the bearing sleeve 7 upward, and the bearing sleeve 7 squeezes the cushion 6, so that the sealing shear nails are disconnected, and the cushion 6 is separated from the locking tube 15. The cushion 6 continues to squeeze the rubber cylinder 4 isolated by the spacer ring 5 on the outer sleeve 3, so that the rubber cylinder 4 is compressed and expanded outward. Synchronously, during the process of the bearing sleeve 7 pushing upward, it passes through the top of the card seat 14, so that the retaining spring installed on the card seat 14 is locked with the locking groove on the inner wall of the bearing sleeve 7, thereby locking the position of the bearing sleeve 7, thereby realizing the sealing, and then the upper The injection holes opened on the outer tube 2 can be used for water injection, so that an annular water column is formed between the shunt tube 12 and the outer casing 3. When producing oil, oil can be produced through the oil pipe connected by the upper joint 1 and the lower joint 11 at both ends of the shunt tube 12. When unsealing, the shunt tube 12 is pulled up to disconnect the pin connecting the upper joint 1 and the upper outer tube 2, thereby separating the upper joint 1 and the upper outer tube 2. In the process of pulling up the shunt tube 12, a gap is generated between the upper joint 1 and the upper outer tube 2, so that each rubber tube 4 is separated from the inner wall of the wellbore due to elastic shrinkage, thereby achieving unsealing.

[0043] As attached Figure 2 and Figure 3 As shown, a first inner screw ring 18 is provided at one end of the upper joint 1, and an annular nail groove 17 is opened on the outside of the first inner screw ring 18. The first inner screw ring 18 is connected and cooperated with one end of the shunt pipe 12, and a thread hole is opened on the corresponding upper outer tube 2, and a pin is installed in the thread hole, and the bottom end of the pin is inserted into the nail groove 17.

[0044] The upper joint 1 and the upper outer tube 2 are connected by pins. When unsealing, the shunt tube 12 is pulled up to connect the rubber tube 4 to the inner wall of the wellbore, so that the pin is disconnected by force, thereby separating the upper joint 1 and the upper outer tube 2, so that the rubber tube 4 has a retraction space and is separated from the inner wall of the wellbore and unsealed.

[0045] As attached Figure 2 , Figure 5 and Figure 6 As shown, a connector 20 is screwed onto one end of the well-washing valve 13 , and a sealing ring is sleeved at the connection between the well-washing valve 13 and the connector 20 .

[0046] By providing a sealing ring between the connector 20 and the well flushing valve 13 , the sealing performance of the connection can be improved.

[0047] As attached Fig.13 As shown, the lower joint 11 includes a connecting pipe 1101 , and the connecting pipe 1101 is sleeved on the diverter pipe 12 .

[0048] The outer screw ring 1102 is arranged on the connecting pipe 1101 , and the outer screw ring 1102 is screwed together with the adjusting ring 10 .

[0049] By connecting the outer screw ring 1102 with the adjusting ring 10, the positions of the lower liquid cylinder 9 and the upper liquid cylinder 8 installed on the shunt pipe 12 can be limited, so that the overall connection is matched.

[0050] As attached Fig. 9 As shown, the lock tube 15 includes a connecting tube 1501, which is inserted into the seat cushion 6 and is screwed together with one end of the outer sleeve 3.

[0051] The clamp head 1502 , the clamp head 1502 welding machine is on one side of the connecting tube 1501 , and the clamp head 1502 is locked and matched with the clamping seat 14 .

[0052] A card slot is provided on the connecting tube 1501, and a nail hole is provided on the seat cushion 6. A sealing shear nail is installed in the nail hole, and the bottom end of the sealing shear nail is inserted into the card slot.

[0053] By fixing the connecting tube 1501 in a position on the shunt tube 12, when the bearing sleeve 7 moves to seal, the connecting tube 1501 can block the movement of the holder 14, so that the retaining spring installed on the holder 14 can be locked with the locking groove provided on the inner wall of the bearing sleeve 7, and when unsealing, the clamping head 1502 can drag the holder 14, so that the overall structure can be unsealed when the connection is tight.

[0054] Embodiment 2

[0055] As attached Figure 1-13The bridge-type packer shown in the figure is used for synchronous injection and production in horizontal wells. The overall structure is the same as that in the first embodiment, except that it includes multiple rubber tubes 4 sleeved on an outer casing 3, and there are spacer rings 5 ​​between adjacent rubber tubes 4. The outer wall of each rubber tube 4 is provided with an annular triangular groove so that the outer wall of the rubber tube 4 forms a corrugated structure.

[0056] A corrugated structure is formed on the outer wall of each rubber tube 4. When each rubber tube 4 expands outward under pressure and the outer wall contacts the inner wall of the wellbore, the friction between the outer wall of the rubber tube 4 and the inner wall of the wellbore is increased, thereby improving the fixity and sealing of the installation position of the packer during setting.

[0057] Embodiment 3

[0058] As attached Figure 1-13 The bridge packer shown is used for synchronous injection and production in horizontal wells. It has the same overall structure as that in the first embodiment, except that it includes a single rubber sleeve 4 sleeved on an outer casing 3, and the outer wall of the rubber sleeve 4 is provided with a plurality of annular grooves.

[0059] By providing a single rubber cartridge 4 , firstly, it is more convenient to install the rubber cartridge 4 of the packer, and it is more convenient to replace the rubber cartridge 4 later.

[0060] Embodiment 4

[0061] As attached Figure 1-13 The bridge-type seal shown in the figure is used for synchronous injection and production in horizontal wells. The overall structure is the same as that in Example 1, except that two locking holes are symmetrically opened on the adjustment ring 10, and a top screw is screwed into each of the locking holes, and the bottom of the top screw is connected to the outer screw ring 1102.

[0062] By opening a locking hole on the adjusting ring 10, after the packer is assembled and the position of the adjusting ring 10 is fixed, a top screw is installed in the locking hole to connect the outer screw ring 1102, thereby improving the fixity of the installation position of the adjusting ring 10 and avoiding the phenomenon of thread slippage due to excessive force on the adjusting ring 10 during setting or unsealing.

[0063] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0064] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0065] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge packer for synchronous injection and production in a horizontal well, comprising an upper joint (1), characterized in that: One end of the upper joint (1) is screwed with a shunt pipe (12), the upper cover of the shunt pipe (12) is sleeved with an upper outer pipe (2), one end of the upper outer pipe (2) is connected and matched with the upper joint (1), the shunt pipe (12) in the upper outer pipe (2) is sleeved with a well flushing valve (13), the other end of the upper outer pipe (2) is sleeved with an outer sleeve (3), a plurality of rubber tubes (4) are sleeved on the outer sleeve (3), and a spacer ring (5) is arranged between each of the rubber tubes (4), one end of the outer sleeve (3) is screwed with a locking tube (15), and the locking tube (15) The connection is matched with a card seat (14), the outer side of the lock tube (15) is sleeved with a seat cushion (6), the outer side of the card seat (14) is sleeved with a bearing sleeve (7), one side of the bearing sleeve (7) is connected to an upper liquid cylinder (8), one side of the upper liquid cylinder (8) is connected to a lower liquid cylinder (9), a piston (16) is arranged in the upper liquid cylinder (8), the other end of the diverter pipe (12) is connected to a lower joint (11), one end of the lower joint (11) is inserted into the lower liquid cylinder (9), and the end of the lower liquid cylinder (9) connected to the lower joint (11) is sleeved with an adjustment ring (10).

2. A bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: A first inner screw ring (18) is provided at one end of the upper joint (1), and an annular nail groove (17) is provided on the outside of the first inner screw ring (18). The first inner screw ring (18) is connected and matched with one end of the shunt pipe (12), and a thread hole is provided on the corresponding upper outer pipe (2), a pin is installed in the thread hole, and the bottom end of the pin is inserted into the nail groove (17).

3. A bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: One end of the well-washing valve (13) is screwed with a connector (20), and a sealing ring is sleeved at the connection between the well-washing valve (13) and the connector (20).

4. A bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: A sealing ring (19) is arranged inside the upper outer tube (2), and the sealing ring (19) is slidably matched with the diverter tube (12).

5. The bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: A first screw barrel (21) is welded to one end of the outer sleeve (3), and the first screw barrel (21) is screwed together with one end of the upper outer tube (2).

6. The bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: A retaining ring (22) is welded to the inner wall of one end of the seat cushion (6), and the retaining ring (22) is slidably matched with the outer sleeve (3).

7. The bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: The lower joint (11) comprises a connecting pipe (1101), and the connecting pipe (1101) is sleeved on the diverter pipe (12); An external screw ring (1102) is arranged on the connecting pipe (1101), and the external screw ring (1102) is screwed together with the adjusting ring (10).

8. The bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: The locking tube (15) comprises a connecting tube (1501), the connecting tube (1501) is inserted into the seat cushion (6), and the connecting tube (1501) is screwed together with one end of the outer sleeve (3); The clamp head (1502) is welded on one side of the connecting tube (1501), and the clamp head (1502) is locked and matched with the clamp seat (14).

9. A bridge packer for synchronous injection and production in horizontal wells according to claim 8, characterized in that: The connecting tube (1501) is provided with a slot, the cushion (6) is provided with a nail hole, a sealing shear pin is installed in the nail hole, and the bottom end of the sealing shear pin is inserted into the slot.

10. The bridge packer for synchronous injection and production in horizontal wells according to claim 1, characterized in that: A third inner spiral ring (23) is arranged inside the piston (16), and the third inner spiral ring (23) is connected and matched with the shunt pipe (12).

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