A bridge-type concentric water distributor for oil production

Abstract

The present invention relates to the technical field of concentric water distributors, and specifically relates to a bridge-type concentric water distributor for oil extraction, which includes an external water distribution cylinder. An external water injection port is provided on the external water distribution cylinder. An internal water distribution cylinder is slidably arranged inside the external water distribution cylinder. A fixed support plate is fixedly connected inside the internal water distribution cylinder. A lifting fixed column is fixedly connected to the upper end of the fixed support plate. Through the cooperation of the installation fixing member and the partition blocking member, by controlling the electric telescopic rod to extend, the electric telescopic rod moves downward. The first hinged push plate drives the hinged fixed seat to move away from the moving vertical rod, and then the vertical sliding push plate is pushed to move through the fixed sliding rod, the reset connecting spring and the sliding sleeve rod. The vertical sliding push plate slides on the support sliding rod, and the fixed connecting plate is driven to move through the driving hinge connecting plate, so that the two blocking arc plates move away from each other. Furthermore, while the internal water distribution cylinder can be fixedly installed, the external water injection port can also be opened.

Description

Technical Field

[0001] The present invention relates to the technical field of concentric water distributors, and specifically to a bridge-type concentric water distributor for oil extraction. Background Art

[0002] In oilfield exploitation, as the oil reservoir exploitation decreases, the reservoir pressure also decreases accordingly. At this time, injection wells are set in the reservoir to inject water into the reservoir through the injection wells to increase the reservoir pressure and ensure the exploitation efficiency. The bridge-type concentric water distributor is a layered water injection tool designed specifically for oil extraction. Its innovation lies in the adoption of a bridge-type flow-through channel and an electromechanical integrated concentric measurement and adjustment technology, effectively solving the problems of difficult operation and low efficiency of traditional water distributors under complex reservoir conditions, and providing key technical support for improving the oilfield development efficiency and crude oil recovery rate.

[0003] For example, the authorized announcement number is CN117948110B, a concentric intelligent water distributor device, including a middle water distribution cylinder body, an inner adjustment control sleeve, an outer water distribution cylinder body and an injection well cylinder body. An inner adjustment control sleeve slides axially inside the middle water distribution cylinder body. The middle water distribution cylinder body slides and fits inside the outer water distribution cylinder body, and the outer water distribution cylinder body slides and fits inside the injection well cylinder body. The motor spindle of the middle control module is fixed to a middle screw rod. The middle screw rod is rotationally connected to an upper sliding cylinder. A lower sliding cylinder slides and connects to the inner side of the lower part of the upper sliding cylinder. Outer fixing balls are annularly arranged on both the upper and lower parts of the middle water distribution cylinder body. The middle water distribution cylinder body and the outer water distribution cylinder body are directly separated, and the replacement operation of the connection structures such as the middle water distribution cylinder body is performed, eliminating the disassembly operation of the pipe string, that is, the outer water distribution cylinder body, and solving the problem that when maintaining and replacing the water distributor, the pipe string and the water distributor need to be lifted together, and the disassembly of the pipe string section by section increases the replacement time. Although the above-mentioned prior art can achieve the separation between the middle water distribution cylinder body and the outer water distribution cylinder body, when taking out the middle water distribution cylinder body, the lower water injection holes on the outer water distribution cylinder body are always in an open state, and the downhole fluid is likely to flow out from the lower water injection holes on the outer water distribution cylinder body, which may affect the downhole pressure balance. At the same time, fluid leakage will cause oil stains or other harmful substances to leak into the environment, increasing the cleaning and repair costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a bridge-type concentric water distributor for oil extraction to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a bridge-type concentric water distributor for oil exploitation, including an external water distribution cylinder, an external water injection port is provided on the external water distribution cylinder, an internal water distribution cylinder is slidably arranged inside the external water distribution cylinder, a fixed support plate is fixedly connected inside the internal water distribution cylinder, a lifting fixed column is fixedly connected to the upper end of the fixed support plate, a water volume adjustment ring sleeve is slidably arranged inside the internal water distribution cylinder, an installation and fixing member for limiting and fixing the internal water distribution cylinder inside the external water distribution cylinder is arranged at the lower end of the fixed support plate, a driving and adjusting member for driving the water volume adjustment ring sleeve to move up and down is arranged on the installation and fixing member, a fixed cavity is arranged inside the external water distribution cylinder, a partition and plugging member cooperating with the installation and fixing member is arranged inside the fixed cavity, the partition and plugging member is used for plugging the external water injection port, an internal water injection port is arranged on the internal water distribution cylinder, the external water injection port and the internal water injection port are communicated, and the water volume adjustment ring sleeve is used for blocking the internal water injection port.

[0006] Preferably, the installation and fixing member includes an electric telescopic rod, a moving vertical rod, a first articulated push plate, an articulated fixing seat, a fixed sliding rod, a sliding sleeve rod, a sliding cavity, a reset connecting spring, and a locking and limiting hole. The electric telescopic rod is fixedly connected to the lower end of the fixed support plate, and the output end of the electric telescopic rod is fixedly connected to the moving vertical rod.

[0007] Preferably, two first articulated push plates are symmetrically articulated on the moving vertical rod. One end of the first articulated push plate away from the moving vertical rod is articulated with an articulated fixing seat. One end of the articulated fixing seat is fixedly connected with a fixed sliding rod, and a sliding sleeve rod is sleeved on the fixed sliding rod. A sliding cavity is arranged inside the sliding sleeve rod.

[0008] Preferably, the fixed sliding rod is slidably connected in the sliding cavity. One end of the fixed sliding rod is fixedly connected with a reset connecting spring, and the other end of the reset connecting spring is fixedly connected to the sliding sleeve rod. The sliding sleeve rod slidably penetrates the internal water distribution cylinder, and a locking and limiting hole for the sliding sleeve rod to extend into is arranged on the external water distribution cylinder. The locking and limiting hole is communicated with the fixed cavity.

[0009] Preferably, the partition and plugging member includes a support sliding rod, a vertical sliding push plate, a driving articulated connecting plate, a fixed connecting plate, a plugging arc plate, a fixed square support plate, a sliding insertion rod, and a reset spring. The support sliding rod is fixedly connected inside the fixed cavity, and the vertical sliding push plate is slidably connected to the support sliding rod.

[0010] Preferably, one end of the vertical sliding push plate close to the fixed cavity is articulated with a driving articulated connecting plate. One end of the driving articulated connecting plate away from the vertical sliding push plate is articulated with a fixed connecting plate. One end of the fixed connecting plate is fixedly connected to the plugging arc plate, and the fixed square support plate is fixedly connected inside the fixed cavity.

[0011] Preferably, one end of the fixed square support plate is fixedly connected with a sliding insertion rod, the end of the sliding insertion rod away from the fixed square support plate is slidably inserted into the inside of the sealing arc plate, a return spring is sleeved on the sliding insertion rod, one end of the return spring is fixedly connected with the fixed square support plate, and the other end of the return spring is fixedly connected with the sealing arc plate.

[0012] Preferably, the driving and adjusting member includes a fixed mounting plate, a motor support seat, a driving motor, a driving threaded rod, a cross mounting frame, a fixed worm gear, a support connecting plate and a driving worm gear. The fixed mounting plate is fixedly connected to the moving vertical rod, and the motor support seat is fixedly connected to the fixed mounting plate.

[0013] Preferably, the driving motor is fixedly installed on the motor support seat, the driving threaded rod is rotatably connected to the middle of the fixed mounting plate, the upper end of the driving threaded rod is fixedly connected with the fixed worm gear, the support connecting plate is fixedly connected to the fixed mounting plate, and the driving worm gear is rotatably connected to the support connecting plate.

[0014] Preferably, the driving worm gear meshes with the fixed worm gear, one end of the driving worm gear is fixedly connected to the output end of the driving motor, the driving threaded rod passes through the cross mounting frame, and the driving threaded rod is threadedly connected with the cross mounting frame. The cross mounting frame is fixedly installed inside the water volume adjusting collar.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] Through the cooperation of the installation and fixing member and the partition and sealing member, by controlling the electric telescopic rod to extend, the electric telescopic rod moves downward, and the first articulated push plate drives the articulated fixed seat away from the moving vertical rod. Then, through the fixed sliding rod, the reset connection spring and the sliding sleeve rod, the vertical sliding push plate is pushed to move. The vertical sliding push plate slides on the support sliding rod, and the driving articulated connecting plate drives the fixed connecting plate to move, realizing that the two sealing arc plates move away from each other. Thus, while the internal water distribution cylinder can be fixedly installed, the external water injection port can also be opened, facilitating the installation and fixing of the internal water distribution cylinder and the water injection operation.

[0017] By providing the installation and fixing member and the partition and sealing member, when the internal water distribution cylinder needs to be maintained and replaced, the electric telescopic rod is controlled to extend and retract. The electric telescopic rod drives the moving vertical rod to move upward. The moving vertical rod drives the articulated fixed seat to move through the first articulated push plate. The articulated fixed seat drives the sliding sleeve rod to move out of the fixed cavity through the fixed sliding rod. Under the elastic action of the return spring, the two sealing arc plates can move closer and contact each other, realizing the sealing of the external water injection port and avoiding fluid leakage.

[0018] By providing a driving and adjusting member, a driving worm is rotated by a driving motor. The driving worm meshes with a fixed worm wheel. When the driving worm rotates, it drives the fixed worm wheel to rotate. The rotation of the fixed worm wheel can drive a driving threaded rod to rotate. The driving threaded rod is threadedly connected to a cross mounting bracket. The rotation of the driving threaded rod can drive the cross mounting bracket and the water flow regulating collar thereon to move up and down, thereby controlling the water flow rate by blocking the internal water injection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the fixed cavity position of the present invention.

[0022] Figure 4 For the present invention Figure 3 schematic diagram of the structure at position A.

[0023] Figure 5 It is a schematic diagram of the cooperative structure of the installation and fixing member and the partition and sealing member of the present invention.

[0024] Figure 6 It is a schematic diagram of the installation structure of the water flow regulating collar of the present invention.

[0025] Figure 7 It is a schematic diagram of the internal water distribution cylinder structure of the present invention.

[0026] Figure 8 It is a schematic diagram of the external water distribution cylinder structure of the present invention.

[0027] Figure 9 It is a schematic diagram of the sliding sleeve rod structure of the present invention.

[0028] Figure 10 It is a schematic diagram of the internal structure of the sliding sleeve rod of the present invention.

[0029] Figure 11 It is a schematic diagram of the cross mounting bracket structure of the present invention.

[0030] Figure 12 It is a schematic plan view of the internal structure of the present invention.

[0031] Figure 13 It is a schematic diagram of the position structure of the sliding sleeve rod of the present invention.

[0032] In the figure: 1. External water distribution cylinder; 2. External water injection port; 3. Internal water distribution cylinder; 4. Fixed support plate; 5. Fishing-up fixed column; 6. Installation and fixing member; 7. Partition and plugging member; 8. Fixed cavity; 9. Driving and adjusting member; 10. Internal water injection port; 11. Water volume adjusting ring sleeve; 61. Electric telescopic rod; 62. Moving vertical rod; 63. First articulated push plate; 64. Articulated fixing seat; 65. Fixed sliding rod; 66. Sliding sleeve rod; 67. Sliding cavity; 68. Reset connecting spring; 69. Locking and limiting hole; 71. Support sliding rod; 72. Vertical sliding push plate; 73. Driving articulated connecting plate; 74. Fixed connecting plate; 75. Plugging arc plate; 76. Fixed square support plate; 77. Sliding insertion rod; 78. Reset spring; 91. Fixed mounting plate; 92. Motor support seat; 93. Driving motor; 94. Driving threaded rod; 95. Cross mounting frame; 96. Fixed worm gear; 97. Support connecting plate; 98. Driving worm gear. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 13, the present invention provides a technical solution: a bridge-type concentric water distributor for oil exploitation, which includes an external water distribution cylinder 1. An external water injection port 2 is provided on the external water distribution cylinder 1. An internal water distribution cylinder 3 is slidably arranged inside the external water distribution cylinder 1. A fixed support plate 4 is fixedly connected inside the internal water distribution cylinder 3. A lifting fixed column 5 is fixedly connected to the upper end of the fixed support plate 4. A water volume adjustment ring sleeve 11 is slidably arranged inside the internal water distribution cylinder 3. An installation and fixation member 6 for limiting and fixing the internal water distribution cylinder 3 inside the external water distribution cylinder 1 is arranged at the lower end of the fixed support plate 4. A driving and adjusting member 9 for driving the water volume adjustment ring sleeve 11 to move up and down is arranged on the installation and fixation member 6. A fixed cavity 8 is opened inside the external water distribution cylinder 1. A partition and sealing member 7 that cooperates with the installation and fixation member 6 is arranged inside the fixed cavity 8. The partition and sealing member 7 is used to block the external water injection port 2. An internal water injection port 10 is opened on the internal water distribution cylinder 3. The external water injection port 2 and the internal water injection port 10 are communicated. The water volume adjustment ring sleeve 11 is used to block the internal water injection port 10. Through the cooperation of the installation and fixation member 6 and the partition and sealing member 7, by controlling the electric telescopic rod 61 to extend, the electric telescopic rod 61 moves downward. The first articulated push plate 63 drives the articulated fixed seat 64 to move away from the moving vertical rod 62. Then, through the fixed slide rod 65, the reset connection spring 68 and the sliding sleeve rod 66, the vertical sliding push plate 72 is pushed to move. The vertical sliding push plate 72 slides on the support slide rod 71. The driving articulated connecting plate 73 drives the fixed connecting plate 74 to move, realizing the mutual separation of the two sealing arc plates 75. Thus, while fixing and installing the internal water distribution cylinder 3, the external water injection port 2 can be opened, facilitating the installation and fixation of the internal water distribution cylinder 3 and the water injection operation. By providing the installation and fixation member 6 and the partition and sealing member 7, when the internal water distribution cylinder 3 needs to be maintained and replaced, the electric telescopic rod 61 is controlled to expand and contract. The electric telescopic rod 61 drives the moving vertical rod 62 to move upward. The moving vertical rod 62 drives the articulated fixed seat 64 to move through the first articulated push plate 63. The articulated fixed seat 64 drives the sliding sleeve rod 66 to move out of the fixed cavity 8 through the fixed slide rod 65. Under the elastic action of the reset spring 78, the two sealing arc plates 75 can be made to approach and contact each other, realizing the blocking of the external water injection port 2 and avoiding fluid leakage. By providing the driving and adjusting member 9, the driving motor 93 drives the driving worm 98 to rotate. The driving worm 98 meshes with the fixed worm gear 96. The rotation of the driving worm 98 drives the fixed worm gear 96 to rotate. The rotation of the fixed worm gear 96 can drive the driving threaded rod 94 to rotate. The driving threaded rod 94 is threadedly connected to the cross installation frame 95. The rotation of the driving threaded rod 94 can drive the cross installation frame 95 and the water volume adjustment ring sleeve 11 thereon to move up and down, controlling the size of the water flow by blocking the internal water injection port 10.

[0035] The installation and fixing member 6 includes an electric telescopic rod 61, a movable vertical rod 62, a first articulated push plate 63, an articulated fixing seat 64, a fixed sliding rod 65, a sliding sleeve rod 66, a sliding cavity 67, a reset connecting spring 68, and a locking and limiting hole 69. The lower end of the fixed support plate 4 is fixedly connected to the electric telescopic rod 61. The output end of the electric telescopic rod 61 is fixedly connected to the movable vertical rod 62. Two first articulated push plates 63 are symmetrically articulated on the movable vertical rod 62. One end of the first articulated push plate 63 away from the movable vertical rod 62 is articulated to the articulated fixing seat 64. One end of the articulated fixing seat 64 is fixedly connected to the fixed sliding rod 65. The fixed sliding rod 65 is sleeved with the sliding sleeve rod 66. The sliding cavity 67 is opened inside the sliding sleeve rod 66. The fixed sliding rod 65 is slidably connected inside the sliding cavity 67. One end of the fixed sliding rod 65 is fixedly connected to the reset connecting spring 68. The other end of the reset connecting spring 68 is fixedly connected to the sliding sleeve rod 66. The sliding sleeve rod 66 slidably penetrates through the internal water distribution cylinder 3. The external water distribution cylinder 1 is provided with a locking and limiting hole 69 for the sliding sleeve rod 66 to extend into. The locking and limiting hole 69 is communicated with the fixed cavity 8.

[0036] The partition and plugging member 7 includes a support sliding rod 71, a vertical sliding push plate 72, a driving articulated connecting plate 73, a fixed connecting plate 74, a plugging arc plate 75, a fixed square support plate 76, a sliding insertion rod 77, and a reset spring 78. The support sliding rod 71 is fixedly connected inside the fixed cavity 8. The vertical sliding push plate 72 is slidably connected to the support sliding rod 71. One end of the vertical sliding push plate 72 close to the fixed cavity 8 is articulated to the driving articulated connecting plate 73. One end of the driving articulated connecting plate 73 away from the vertical sliding push plate 72 is articulated to the fixed connecting plate 74. One end of the fixed connecting plate 74 is fixedly connected to the plugging arc plate 75. The fixed square support plate 76 is fixedly connected inside the fixed cavity 8. One end of the fixed square support plate 76 is fixedly connected to the sliding insertion rod 77. The end of the sliding insertion rod 77 away from the fixed square support plate 76 is slidably inserted inside the plugging arc plate 75. The reset spring 78 is sleeved on the sliding insertion rod 77. One end of the reset spring 78 is fixedly connected to the fixed square support plate 76. The other end of the reset spring 78 is fixedly connected to the plugging arc plate 75.

[0037] The drive adjustment member 9 includes a fixed mounting plate 91, a motor support base 92, a drive motor 93, a drive threaded rod 94, a cross mounting bracket 95, a fixed worm gear 96, a support connection plate 97, and a drive worm 98. The fixed mounting plate 91 is fixedly connected to the moving vertical rod 62. The motor support base 92 is fixedly connected to the fixed mounting plate 91. The drive motor 93 is fixedly mounted on the motor support base 92. The drive threaded rod 94 is rotatably connected to the middle of the fixed mounting plate 91. The upper end of the drive threaded rod 94 is fixedly connected to the fixed worm gear 96. The support connection plate 97 is fixedly connected to the fixed mounting plate 91. The drive worm 98 is rotatably connected to the support connection plate 97. The drive worm 98 meshes with the fixed worm gear 96. One end of the drive worm 98 is fixedly connected to the output end of the drive motor 93. The drive threaded rod 94 passes through the cross mounting bracket 95, and the drive threaded rod 94 is threadedly connected to the cross mounting bracket 95. The cross mounting bracket 95 is fixedly mounted inside the water volume adjustment collar 11. When the water volume needs to be adjusted, the drive motor 93 drives the drive worm 98 to rotate. The drive worm 98 meshes with the fixed worm gear 96. The rotation of the drive worm 98 drives the rotation of the fixed worm gear 96. The rotation of the fixed worm gear 96 can drive the rotation of the drive threaded rod 94. The drive threaded rod 94 is threadedly connected to the cross mounting bracket 95. The rotation of the drive threaded rod 94 can drive the cross mounting bracket 95 and the water volume adjustment collar 11 thereon to move up and down, and control the size of the water flow by blocking the internal water injection port 10.

[0038] In actual use, the internal water distribution cylinder 3 is installed inside the external water distribution cylinder 1. When the installation of the internal water distribution cylinder 3 is completed, the electric telescopic rod 61 is in the extended state, the sliding sleeve rod 66 abuts against the vertical sliding push plate 72, the two sealing arc plates 75 are far away from each other, and the return spring 78 is in the compressed state. At this time, the external water injection port 2 is in the open state, and water injection into the oil layer can be realized; when the internal water distribution cylinder 3 needs to be maintained and replaced, control the electric telescopic rod 61 to contract. The electric telescopic rod 61 drives the moving vertical rod 62 to move upward. The moving vertical rod 62 drives the hinged fixed seat 64 to move through the first hinged push plate 63. The hinged fixed seat 64 drives the sliding sleeve rod 66 to move out of the fixed cavity 8 through the fixed sliding rod 65. At this time, the semi-spherical end of the sliding sleeve rod 66 is in the locking limit hole 69, releasing the restriction of the sliding sleeve rod 66 on the vertical sliding push plate 72. Under the elastic action of the return spring 78, the two sealing arc plates 75 can be made to approach and contact each other, realizing the sealing of the external water injection port 2 and avoiding fluid leakage. By lifting the lifting fixing column 5 upward, under the extrusion of the locking limit hole 69, the sliding sleeve rod 66 moves to one side of the hinged fixed seat 64 and compresses the return connection spring 68, realizing the sliding sleeve rod 66 moving out of the locking limit hole 69, and the separation of the internal water distribution cylinder 3 from the external water distribution cylinder 1 can be realized, facilitating the replacement and maintenance of the internal water distribution cylinder 3 and its internal components without lifting the external water distribution cylinder 1, improving the convenience; when installing the external water distribution cylinder 1, as Figure 7 shown, the semi-circular end of the sliding sleeve rod 66 protrudes outside the internal water distribution cylinder 3, facilitating installation and positioning. The sliding sleeve rod 66 is compressed into the chute on the internal water distribution cylinder 3 under extrusion. When the semi-circular end of the sliding sleeve rod 66 moves to the locking limit hole 69, under the elastic action of the return connection spring 68, the semi-circular end of the sliding sleeve rod 66 can extend into the locking limit hole 69, thereby realizing the preliminary positioning of the internal water distribution cylinder 3. Then, by controlling the electric telescopic rod 61 to extend, the electric telescopic rod 61 moves downward, drives the hinged fixed seat 64 to move away from the moving vertical rod 62 through the first hinged push plate 63, and then drives the vertical sliding push plate 72 to move through the fixed sliding rod 65, the return connection spring 68 and the sliding sleeve rod 66. The vertical sliding push plate 72 slides on the support sliding rod 71, drives the fixed connecting plate 74 to move through the driving hinge connecting plate 73, and then realizes the two sealing arc plates 75 moving away from each other, realizing the opening of the external water injection port 2 and facilitating the water injection operation; when the water volume needs to be adjusted, drive the driving worm 98 to rotate through the driving motor 93. The driving worm 98 meshes with the fixed worm wheel 96. The rotation of the driving worm 98 drives the fixed worm wheel 96 to rotate. The rotation of the fixed worm wheel 96 can drive the driving threaded rod 94 to rotate. The driving threaded rod 94 is threadedly connected to the cross mounting bracket 95. The rotation of the driving threaded rod 94 can drive the cross mounting bracket 95 and the water volume adjustment ring sleeve 11 thereon to move up and down, controlling the size of the water flow by blocking the internal water injection port 10.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge-type concentric water distributor for oil production, comprising an external water distribution cylinder (1), characterized in that: An external water distribution cylinder (1) is provided with an external water injection port (2). An internal water distribution cylinder (3) is slidably arranged inside the external water distribution cylinder (1). A fixed support plate (4) is fixedly connected inside the internal water distribution cylinder (3). A lifting fixed column (5) is fixedly connected to the upper end of the fixed support plate (4). A water volume adjustment ring sleeve (11) is slidably arranged inside the internal water distribution cylinder (3). An installation and fixing member (6) for limiting and fixing the internal water distribution cylinder (3) inside the external water distribution cylinder (1) is arranged at the lower end of the fixed support plate (4). A driving and adjusting member (9) for driving the water volume adjustment ring sleeve (11) to move up and down is arranged on the installation and fixing member (6). A fixed cavity (8) is formed inside the external water distribution cylinder (1). A partition and sealing member (7) that cooperates with the installation and fixing member (6) is arranged inside the fixed cavity (8). The partition and sealing member (7) is used to block the external water injection port (2). An internal water injection port (10) is formed on the internal water distribution cylinder (3). The external water injection port (2) is communicated with the internal water injection port (10). The water volume adjustment ring sleeve (11) is used to block the internal water injection port (10); The installation and fixing member (6) includes an electric telescopic rod (61), a moving vertical rod (62), a first hinged push plate (63), a hinged fixing seat (64), a fixed sliding rod (65), a sliding sleeve rod (66), a sliding cavity (67), a reset connecting spring (68), and a locking and limiting hole (69). An electric telescopic rod (61) is fixedly connected to the lower end of the fixed support plate (4). The output end of the electric telescopic rod (61) is fixedly connected to a moving vertical rod (62); Two first hinged push plates (63) are symmetrically hinged on the moving vertical rod (62). One end of the first hinged push plate (63) away from the moving vertical rod (62) is hinged to a hinged fixing seat (64). A fixed sliding rod (65) is fixedly connected to one end of the hinged fixing seat (64). A sliding sleeve rod (66) is sleeved on the fixed sliding rod (65). A sliding cavity (67) is formed inside the sliding sleeve rod (66); The fixed sliding rod (65) is slidably connected inside the sliding cavity (67). A reset connecting spring (68) is fixedly connected to one end of the fixed sliding rod (65). The other end of the reset connecting spring (68) is fixedly connected to the sliding sleeve rod (66). The sliding sleeve rod (66) slidably penetrates through the internal water distribution cylinder (3). A locking and limiting hole (69) for the sliding sleeve rod (66) to extend into is formed on the external water distribution cylinder (1). The locking and limiting hole (69) is communicated with the fixed cavity (8); The partition and plugging member (7) includes a support sliding rod (71), a vertical sliding push plate (72), a driving hinge connecting plate (73), a fixed connecting plate (74), a plugging arc plate (75), a fixed square support plate (76), a sliding insertion rod (77), and a return spring (78). The support sliding rod (71) is fixedly connected inside the fixed cavity (8), and the vertical sliding push plate (72) is slidably connected to the support sliding rod (71).

2. The bridge-type concentric water distributor for oil exploitation according to claim 1, characterized in that: One end of the vertical sliding push plate (72) close to the fixed cavity (8) is hinged with a driving hinge connecting plate (73). One end of the driving hinge connecting plate (73) away from the vertical sliding push plate (72) is hinged with a fixed connecting plate (74). One end of the fixed connecting plate (74) is fixedly connected to the plugging arc plate (75). The fixed square support plate (76) is fixedly connected inside the fixed cavity (8).

3. The bridge-type concentric water distributor for oil exploitation according to claim 2, characterized in that: One end of the fixed square support plate (76) is fixedly connected with a sliding insertion rod (77). The end of the sliding insertion rod (77) away from the fixed square support plate (76) is slidably inserted inside the plugging arc plate (75). A return spring (78) is sleeved on the sliding insertion rod (77). One end of the return spring (78) is fixedly connected to the fixed square support plate (76), and the other end of the return spring (78) is fixedly connected to the plugging arc plate (75).

4. A bridge-type concentric water distributor for oil exploitation according to claim 1, characterized in that: The driving and adjusting member (9) includes a fixed mounting plate (91), a motor support base (92), a driving motor (93), a driving threaded rod (94), a cross mounting frame (95), a fixed worm gear (96), a support connecting plate (97), and a driving worm (98). The fixed mounting plate (91) is fixedly connected to the moving vertical rod (62), and the motor support base (92) is fixedly connected to the fixed mounting plate (91).

5. The bridge-type concentric water distributor for oil exploitation according to claim 4, characterized in that: The driving motor (93) is fixedly mounted on the motor support base (92). The middle part of the fixed mounting plate (91) is rotatably connected with a driving threaded rod (94). The upper end of the driving threaded rod (94) is fixedly connected with a fixed worm gear (96). The support connecting plate (97) is fixedly connected to the fixed mounting plate (91), and the driving worm (98) is rotatably connected to the support connecting plate (97).

6. The bridge-type concentric water distributor for oil production according to claim 5, wherein: The driving worm (98) meshes with the fixed worm gear (96). One end of the driving worm (98) is fixedly connected to the output end of the driving motor (93). The driving threaded rod (94) passes through the cross mounting frame (95), and is threadedly connected between the driving threaded rod (94) and the cross mounting frame (95). The cross mounting frame (95) is fixedly mounted inside the water volume adjusting ring sleeve (11).

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