Bridge packer for simultaneous injection and production in horizontal well

Abstract

The application discloses a bridge-type packer for horizontal well simultaneous injection and production, and particularly relates to the field of bridge-type packers, which comprises an upper joint, a shunt pipe is screwed at one end of the upper joint, a cover sleeve of the shunt pipe is sleeved with an upper outer pipe, one end of the upper outer pipe is connected and matched with the upper joint, a washing valve is matched and sleeved on the shunt pipe in the upper outer pipe, the other end of the upper outer pipe is matched and connected with an outer sleeve pipe, a plurality of rubber tubes are sleeved on the outer sleeve pipe, a spacer ring is arranged between each rubber tube, one end of the outer sleeve pipe is screwed with a lock pipe, the lock pipe is connected and matched with a clamping seat, a seat cushion is sleeved outside the lock pipe, a bearing sleeve is sleeved outside the clamping seat, 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, and a piston is arranged in the upper liquid cylinder. The application has the advantages that the packer can quickly realize setting, water injection and unsetting in the process of oil production of the oil well, thereby improving the convenience of use, the packer has the water injection cleaning function, the practicality of the packer is improved, and the maintenance in the later period is facilitated.

Description

Technical Field

[0001] This invention relates to the field of bridge packer technology, and more specifically, to a bridge packer for simultaneous injection and production in horizontal wells. Background Technology

[0002] A bridge packer is used in oilfield production operations for stratified water exploration, water shut-off, and oil testing. Simultaneous injection and production in horizontal wells is based on key tools such as bridge water injection packers and bridge production tubing, along with other supporting tools, to achieve a "one-stage injection, two-stage production" injection and production technology. This technology uses two bridge water injection packers and a conventional packer to divide the wellbore into upper, middle, and lower layers. Using one bridge water injection packer I external channel, the bridge production tubing external channel, and another bridge water injection packer as an external channel, along with an annulus of φ89mm and φ48mm tubing, casing fluid is injected into the middle layer, achieving the purpose of water injection into the middle layer. The pump extracts the upper layer fluid (connected to the bridge production tubing) and the lower layer fluid (connected to the bottom soluble bottom valve) through the bottom insertion pipe and φ48mm tubing, achieving the purpose of oil production from both layers. This clearly demonstrates the importance of bridge packers in oilfield production operations.

[0003] Utility model patent CN209293741U discloses a bridge-type packer, including an upper connector. A central tube is threaded to the bottom of the upper connector. An adjusting ring is fitted onto the top of the outer wall of the central tube. A rubber sleeve is fitted onto the bottom of the adjusting ring. Three rubber sleeves are provided, with spacers between adjacent sleeves. A conical block is mounted on each rubber sleeve, and a slip seat is fitted onto the bottom of the conical block. Rubber protrusions are provided along the upper and lower edges of the rubber sleeves. After the rubber sleeves are compressed, the rubber protrusions compress the oil pipe, making the contact between the rubber sleeve and the oil pipe tighter, resulting in better sealing and oil pressure resistance. Furthermore, if the rubber sleeves experience a decrease in lifespan and deformation due to long-term use, resulting in minor gaps, when oil enters the rubber sleeves, the oil-absorbing sponge strip will absorb and collect this oil, thus reducing the contact area between the outer side of the rubber sleeve and the oil, maintaining friction between the rubber sleeve and the oil pipe, making the packer more durable.

[0004] However, in actual use, this structure only improves the tightness of the contact between the rubber sleeve inside the packer and the inner wall of the tubing, thus increasing its service life. However, this packer only realizes the sealing function and fixes the setting position, but it cannot inject water to clean the tubing. Therefore, it is necessary to use other tools for cleaning, and its functionality is not perfect. Therefore, a bridge packer for simultaneous 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 simultaneous injection and production in horizontal wells, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bridge packer for simultaneous injection and production in horizontal wells, comprising an upper connector, a shunt pipe screwed to one end of the upper connector, an upper outer pipe sleeved on the shunt pipe, one end of the upper outer pipe connected to the upper connector, a well-washing valve sleeved on the shunt pipe inside the upper outer pipe, an outer sleeve connected to the other end of the upper outer pipe, a plurality of rubber sleeves sleeved on the outer sleeve, a spacer ring provided between each rubber sleeve, a locking pipe screwed to one end of the outer sleeve, a retaining seat connected to the retaining seat, a seat pad sleeved on the outside of the retaining seat, a bearing sleeve sleeved on the outside of the retaining sleeve, an upper liquid cylinder connected to one side of the bearing sleeve, a lower liquid cylinder connected to one side of the upper liquid cylinder, a piston provided inside the upper liquid cylinder, a lower connector connected to the other end of the shunt pipe, one end of the lower connector inserted into the lower liquid cylinder, and an adjusting ring sleeved on the end of the lower liquid cylinder connected to the lower connector.

[0007] After the packer is lowered to the set position on the well, the upper and lower hydraulic cylinders are activated to push the bearing sleeve upwards. The bearing sleeve compresses the seat, causing the setting shear pins to break and the seat to separate from the locking tube. The seat continues to compress the rubber sleeve on the outer sleeve, which is separated by the spacer ring, causing the rubber sleeve to compress and expand outwards. Simultaneously, as the bearing sleeve pushes upwards, it passes the top of the locator, causing the retaining spring installed on the locator to lock with the locking groove opened in the inner wall of the bearing sleeve, thereby locking the position of the bearing sleeve and achieving setting. Then, through the upper... The injection holes on the outer pipe allow for water injection, creating an annular water column between the diverter and the outer casing. During oil extraction, oil can be extracted through the tubing connected to the upper and lower connectors at both ends of the diverter. When unsealing, pulling up the diverter disconnects the pin connecting the upper connector and the outer casing, thus separating the upper connector and the outer casing. During the process of pulling up the diverter, a gap is created between the upper connector and the outer casing, causing each rubber sleeve to elastically retract and separate from the inner wall of the wellbore, thus achieving unsealing.

[0008] Preferably, one end of the upper connector is provided with a first internal threaded ring, and the outer side of the first internal threaded ring is provided with an annular nail groove. The first internal threaded ring is connected and fitted to one end of the diverter pipe, and the corresponding upper outer pipe is provided with a threaded hole. A pin is installed in the threaded hole, and the bottom end of the pin is inserted into the nail groove. The upper connector and the upper outer pipe are connected by the pin. When unsealing, the diverter pipe is pulled up, so that the rubber sleeve is connected to the inner wall of the well barrel, causing the pin to be broken by force, thereby separating the upper connector and the upper outer pipe, so that the rubber sleeve has a retraction space and is detached from the inner wall of the well barrel to be unsealed.

[0009] Preferably, a connector is screwed onto one end of the well-washing valve, and a sealing ring is fitted at the connection between the well-washing valve and the connector. By setting a sealing ring between the connector and the well-washing 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 slides in conjunction with the diverter tube to seal the connection between the upper outer tube and the diverter tube and prevent liquid from overflowing.

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

[0012] Preferably, a retaining ring is welded to the inner wall of one end of the seat cushion. The retaining ring slides in conjunction with the outer sleeve to increase the support area of ​​the rubber tube and prevent the rubber tube from entering the gap between the seat cushion and the outer sleeve when it expands outward under pressure.

[0013] Preferably, the lower connector includes a connecting pipe, which is sleeved on the diverter pipe.

[0014] An external threaded ring is installed on the connecting pipe and is screwed into the adjusting ring.

[0015] By connecting the external threaded ring and the adjusting ring, the positions of the lower liquid cylinder and the upper liquid cylinder on the distributor pipe can be limited, thereby ensuring the overall connection and fit.

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

[0017] The clamp head is welded on one side of the connecting cylinder, and the clamp head is locked to the clamp seat.

[0018] Preferably, the connecting cylinder has a slot, the seat cushion has a nail hole, a seat sealing scissor nail is installed in the nail hole, and the bottom end of the seat sealing scissor nail is inserted into the slot.

[0019] By fixing the connecting cylinder on the diverter pipe, the connecting cylinder can block the movement of the card seat when the bearing sleeve moves to set the seal. This allows the snap ring installed on the card seat to lock into the locking groove opened on the inner wall of the bearing sleeve. When unsealing, the card head can drag the card seat, so that the entire structure can be unsealed while the connection is tight.

[0020] Preferably, a third internal threaded ring is provided inside the piston, and the third internal threaded ring is connected and fitted with the flow divider.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. By using the upper liquid cylinder, lower liquid cylinder, bearing sleeve, seat, spacer ring, rubber sleeve, clamp, locking pipe and setting shear pin, compared with the existing technology, the operation of the upper liquid cylinder and lower liquid cylinder can make the seat squeeze the rubber sleeve, so that the rubber sleeve expands outward due to compression and squeezes the inner wall of the wellbore. With the connection and cooperation of the clamp and bearing sleeve, the position of the seat is fixed, and the setting is achieved. This can prevent the rubber sleeve from shrinking back, thereby improving the stability and sealing of the packer after setting. At the same time, after setting, water can be injected for cleaning through the injection hole opened on the upper outer pipe.

[0023] 2. By setting up the upper connector, upper outer tube, nail groove, and pin, compared with the existing technology, by pulling the diverter pipe upward, the pin connecting the upper connector and the upper outer tube can be subjected to force under the connection between the rubber sleeve and the inner wall of the well barrel, thereby causing the pin to break and the upper connector and the upper outer tube to separate. Combined with the elastic recovery of the rubber sleeve itself, automatic unsealing can be achieved, thereby improving the convenience of use and facilitating the later maintenance of the packer after unsealing.

[0024] In summary, the packer design of this invention enables rapid setting, water injection, and unsealing during oil well production, thereby improving ease of use. It also provides a water injection cleaning function, enhancing the practicality of the packer and facilitating subsequent maintenance. Attached Figure Description

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

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

[0027] Figure 3 This is a three-dimensional structural diagram of the upper connector of the present invention.

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

[0029] Figure 5 This is a schematic diagram of the well-washing valve of the present invention.

[0030] Figure 6 This is a schematic diagram of the connector structure of the present invention.

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

[0032] Figure 8 This is a schematic diagram of the structure of the cushion of the present invention.

[0033] Figure 9 This is a schematic diagram of the card holder structure of the present invention.

[0034] Figure 10 This is a schematic diagram of the upper liquid cylinder of the present invention.

[0035] Figure 11 This is a schematic diagram of the piston structure of the present invention.

[0036] Figure 12 This is a schematic diagram of the structure of the shunt tube of the present invention.

[0037] Figure 13 This is a schematic diagram of the lower connector of the present invention.

[0038] The attached diagram is labeled as follows: 1. Upper connector; 2. Upper outer tube; 3. Outer tube; 4. Rubber sleeve; 5. Spacer ring; 6. Seat cushion; 7. Bearing sleeve; 8. Upper liquid cylinder; 9. Lower liquid cylinder; 10. Adjusting ring; 11. Lower connector; 1101. Connecting pipe; 1102. External threaded ring; 12. Diverter pipe; 13. Well washing valve; 14. Card seat; 15. Locking pipe; 1501. Connecting cylinder; 1502. Card head; 16. Piston; 17. Nail groove; 18. First internal threaded ring; 19. Sealing ring; 20. Connector; 21. First threaded cylinder; 22. Retaining ring; 23. Third internal threaded ring. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] As attached Figure 1-13The bridge packer shown is used for simultaneous injection and production in horizontal wells. It includes an upper connector 1, with a shunt pipe 12 screwed to one end. An upper outer pipe 2 is fitted onto the shunt pipe 12, with one end connected to the upper connector 1. A well-washing valve 13 is fitted onto the shunt pipe 12 inside the upper outer pipe 2. An outer sleeve 3 is fitted onto the other end of the upper outer pipe 2, with multiple rubber sleeves 4 fitted onto the outer sleeve 3. A spacer ring 5 is provided between each rubber sleeve 4. A locking pipe 15 is screwed to one end of the outer sleeve 3, and a retainer 14 is fitted onto the locking pipe 15. A seat 6 is fitted onto the outside of the locking pipe 15, and a bearing sleeve 7 is fitted onto the outside of the retainer 14. An upper liquid cylinder 8 is connected to one side of the bearing sleeve 7. A lower liquid cylinder 9 is connected to one side of the upper liquid cylinder 8. A piston 16 is installed inside the upper liquid cylinder 8. A lower connector 11 is connected to the other end of the diverter pipe 12. One end of the lower connector 11 is inserted into the lower liquid cylinder 9, and an adjusting ring 10 is sleeved on the end of the lower liquid cylinder 9 connected to the lower connector 11. A sealing ring 19 is installed inside the upper outer tube 2. The sealing ring 19 is slidably engaged with the diverter pipe 12. A first screw 21 is welded to one end of the outer tube 3. The first screw 21 is screwed into one end of the upper outer tube 2. A retaining ring 22 is welded to the inner wall of one end of the seat 6. The retaining ring 22 is slidably engaged with the outer tube 3. A third inner screw ring 23 is installed inside the piston 16. The third inner screw ring 23 is connected to the diverter pipe 12.

[0042] After the packer is lowered to the set position on the well, the upper cylinder 8 and lower cylinder 9 are activated to push the bearing sleeve 7 upward. The bearing sleeve 7 compresses the seat 6, causing the setting shear pin to break and the seat 6 to separate from the locking tube 15. The seat 6 continues to compress the rubber sleeve 4 separated by the spacer ring 5 on the outer sleeve 3, causing the rubber sleeve 4 to compress and expand outward. Simultaneously, during the upward pushing process of the bearing sleeve 7, it passes the top of the retainer 14, causing the retaining spring installed on the retainer 14 to lock with the locking groove opened in the inner wall of the bearing sleeve 7, thereby locking the position of the bearing sleeve 7 and achieving setting. Then, through the upper... The injection hole on the outer pipe 2 allows for water injection, forming an annular water column between the diversion pipe 12 and the outer casing 3. During oil extraction, oil can be extracted through the tubing connected to the upper connector 1 and the lower connector 11 at both ends of the diversion pipe 12. When unsealing, the diversion pipe 12 is pulled up, causing the pin connecting the upper connector 1 and the upper outer pipe 2 to break, thus separating the upper connector 1 and the upper outer pipe 2. During the process of pulling up the diversion pipe 12, a gap is generated between the upper connector 1 and the upper outer pipe 2, causing each rubber sleeve 4 to elastically retract and separate from the inner wall of the wellbore, thus achieving unsealing.

[0043] As attached Figure 2 and Figure 3 As shown, one end of the upper connector 1 is provided with a first internal threaded ring 18, and an annular nail groove 17 is provided on the outside of the first internal threaded ring 18. The first internal threaded ring 18 is connected and engaged with one end of the diverter pipe 12, and a threaded hole is provided on the corresponding upper outer pipe 2. A pin is installed in the threaded hole, and the bottom end of the pin is inserted into the nail groove 17.

[0044] The upper connector 1 and the upper outer pipe 2 are connected by a pin. When unsealing, the diversion pipe 12 is pulled up, so that the rubber sleeve 4 is connected to the inner wall of the well, causing the pin to break under force, thereby separating the upper connector 1 and the upper outer pipe 2, so that the rubber sleeve 4 has a retraction space and is detached from the inner wall of the well 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 fitted at the connection between the well-washing valve 13 and the connector 20.

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

[0047] As attached Figure 13 As shown, the lower connector 11 includes a connecting pipe 1101, which is sleeved on the diversion pipe 12.

[0048] An external threaded ring 1102 is provided on the connecting pipe 1101, and the external threaded ring 1102 is screwed into the adjusting ring 10.

[0049] By connecting the external threaded ring 1102 with the adjusting ring 10, the positions of the lower liquid cylinder 9 and the upper liquid cylinder 8 on the diversion pipe 12 can be limited, thereby ensuring the overall connection and fit.

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

[0051] The clamp head 1502 is welded on one side of the connecting cylinder 1501, and the clamp head 1502 is locked to the clamp seat 14.

[0052] The connecting cylinder 1501 has a slot, and the seat cushion 6 has a nail hole. A seat sealing scissor nail is installed in the nail hole, and the bottom end of the seat sealing scissor nail is inserted into the slot.

[0053] By fixing the connecting cylinder 1501 on the diverter pipe 12, when the bearing sleeve 7 moves to set the seal, the connecting cylinder 1501 can block the movement of the card seat 14, so that the snap ring installed on the card seat 14 can lock and engage with the locking groove opened in the inner wall of the bearing sleeve 7. When unsealing, the card head 1502 can drag the card seat 14, so that the overall structure can be unsealed while the connection is tight.

[0054] Example 2

[0055] As attached Figure 1-13The bridge packer shown is used for simultaneous injection and production in horizontal wells. It has the same overall structure as that in Embodiment 1. The difference is that it includes multiple rubber sleeves 4 sleeved on the outer sleeve 3. There are spacer rings 5 ​​between adjacent rubber sleeves 4, and each rubber sleeve 4 has an annular triangular groove on its outer wall so that the outer wall of the rubber sleeve 4 forms a corrugated structure.

[0056] By forming a corrugated structure on the outer wall of each rubber sleeve 4, when each rubber sleeve 4 expands outward under pressure, the friction between the outer wall of the rubber sleeve 4 and the inner wall of the wellbore increases when the outer wall comes into contact with the inner wall of the wellbore, thereby improving the fixation and sealing of the packer position during setting.

[0057] Example 3

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

[0059] By using a single rubber sleeve 4, it is more convenient to install the rubber sleeve 4 of the packer, and it is also more convenient to replace the rubber sleeve 4 later.

[0060] Example 4

[0061] As attached Figure 1-13 The bridge packer shown is used for simultaneous injection and production in horizontal wells. It has the same overall structure as that in Embodiment 1. The difference is that it includes two locking holes symmetrically opened on the adjusting ring 10. Each locking hole is screwed with a top screw, and the bottom of each top screw is abutted on the outer threaded 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 set screw is installed in the locking hole to engage the external threaded ring 1102, thereby improving the fixation of the position of the adjusting ring 10 and preventing the adjusting ring 10 from slipping due to excessive force during setting or unsetting.

[0063] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0064] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0065] In conclusion, 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 within the protection scope of the present invention.

Claims

1. A bridge packer for simultaneous injection and production in horizontal wells, comprising an upper connector (1), characterized in that: One end of the upper connector (1) is provided with a first internal threaded ring (18), and an annular nail groove (17) is opened on the outside of the first internal threaded ring (18). The first internal threaded ring (18) is connected to one end of the diversion pipe (12), and a threaded hole is opened on the corresponding upper outer pipe (2). A pin is installed in the threaded hole, and the bottom end of the pin is inserted into the nail groove (17). One end of the upper connector (1) is screwed with a diversion pipe (12), and an upper outer pipe (2) is sleeved on the upper cover of the diversion pipe (12). One end of the upper outer pipe (2) is connected to the upper connector (1), and a well washing valve (13) is sleeved on the diversion pipe (12) inside the upper outer pipe (2). 2) The other end is connected to an outer tube (3), and multiple rubber tubes (4) are sleeved on the outer tube (3). A spacer ring (5) is provided between each rubber tube (4). A locking tube (15) is screwed to one end of the outer tube (3). A sealing ring (19) is provided inside the upper outer tube (2). The sealing ring (19) is slidably engaged with the diverter pipe (12). A first screw cylinder (21) is welded to one end of the outer tube (3). The first screw cylinder (21) is screwed to one end of the upper outer tube 2 (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 engaged with the outer tube (3). The locking tube (15) includes a connecting cylinder (1501). (1501) is inserted into the seat cushion (6), and the connecting tube (1501) is screwed into 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 into the clamp seat (14); the locking tube (15) is connected to the clamp seat (14), and the clamp seat (14) is sleeved with a bearing sleeve (7) on the outside of the clamp seat (14). During the process of the bearing sleeve (7) being pushed upward, it passes the top of the clamp seat (14), so that the snap ring installed on the clamp seat (14) locks into the locking groove opened on the inner wall of the bearing sleeve (7), thereby locking the position of the bearing sleeve (7), thereby achieving the seat seal, and then through The injection hole on the upper outer tube (2) can be used to inject water, so that an annular water column is formed between the diversion tube (12) and the outer tube (3); the upper liquid cylinder (8) is connected to one side of the bearing sleeve (7), and the lower liquid cylinder (9) is connected to one side of the upper liquid cylinder (8). A piston (16) is provided in the upper liquid cylinder (8), and a third inner threaded ring (23) is provided in the piston (16). The third inner threaded ring (23) is connected to the diversion tube (12). The other end of the diversion tube (12) is connected to the lower connector (11). One end of the lower connector (11) is inserted into the lower liquid cylinder (9), and an adjusting ring (10) is sleeved on the end of the lower liquid cylinder (9) connected to the lower connector (11).

2. A bridge packer for simultaneous 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 fitted at the connection between the well-washing valve (13) and the connector (20).

3. A bridge packer for simultaneous injection and production in horizontal wells according to claim 1, characterized in that: The upper outer tube (2) is provided with a sealing ring (19) inside, and the sealing ring (19) slides in conjunction with the diversion tube (12).

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

5. A bridge packer for simultaneous 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 cushion (6), and the retaining ring (22) slides in conjunction with the outer sleeve (3).

6. A bridge packer for simultaneous injection and production in horizontal wells according to claim 1, characterized in that: The lower connector (11) includes a connecting pipe (1101), which is sleeved on the diversion pipe (12); An external threaded ring (1102) is provided on the connecting pipe (1101) and is screwed into the adjusting ring (10).

7. A bridge packer for simultaneous injection and production in horizontal wells according to claim 1, characterized in that: The connecting cylinder (1501) has a slot, and the seat cushion (6) has a nail hole. A seat sealing scissor is installed in the nail hole, and the bottom end of the seat sealing scissor is inserted into the slot.

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