Modularized sealing well mouth device suitable for complex stratums

Abstract

The invention relates to the technical field of modularized sealing wells, in particular to a modularized sealing well mouth device adapting to complex stratum.The modularized sealing well mouth device comprises a well mouth structure, a protective building seat, a butt joint guide seat, a pressure detector and a communication guide groove, the protective building seat is fixedly arranged on the outer side of the well mouth structure in a pouring mode, and the lower end of the well mouth structure is fixedly connected with the butt joint guide seat; a communicating guide groove is formed in the butt joint guide seat, the communicating guide groove is matched with a wellhead structure, and a pressure detector is further mounted on the butt joint guide seat and used for detecting internal pressure; a motor controls a worm to rotate, so that turbines on the two sides rotate along with the worm, the turbines are matched with a driving shaft to control a crankshaft to rotate, and a hinge ring and a connecting rod drive a compression ring seat to slide through a hinge seat block to be matched with compression treatment of gas in a pressurization seat; and the second control valve controls the communication of the guide butt-joint pipe. And through the arrangement of the wellhead structure, sealing protection work of the sealing well is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of modular sealed wells, and in particular to a modular sealed well head device suitable for complex formations. Background Art

[0002] Modular storage wells are an innovative technology that aims to achieve efficient and safe storage of underground resources through modular design, while improving the flexibility and scalability of the storage system;

[0003] The sealed wells are decomposed into multiple independent modules, each of which has a specific function (such as collection, storage, monitoring, etc.). The modules are connected through standardized interfaces to support rapid assembly, disassembly and replacement to adapt to different geological conditions and storage requirements.

[0004] It integrates functions such as pressure monitoring, leakage warning, and data transmission to achieve full life cycle management. Some designs support "one well for multiple uses", such as simultaneous carbon dioxide storage and groundwater reinjection.

[0005] According to Chinese patent publication number CN119021616A, a carbon dioxide geological storage well is disclosed, comprising: a well body, a sealing self-locking assembly, a pressurized filling assembly, and a gas pressure sensor. The top of the well body is fixedly connected to a wellhead casing, and the outer periphery of the top of the wellhead casing is provided with a sealing well edge, and the top surface of the sealing well edge is provided with a sealing cover. The sealing self-locking assembly includes a fixed ear seat fixed to one side of the wellhead casing, a fixed seat and a gas lift rod fixed to the top surface of the sealing cover, and a lug plate rotatably connected to the surface of the fixed ear seat. A drive cylinder is rotatably mounted on the inner side of the fixed ear seat. By integrating the wellhead sealing structure of the carbon dioxide geological storage well with the injection equipment, arranging the pressurized filling assembly on the surface of the sealing cover can be used to perform daily pressurization on the storage well with insufficient pressure. The internal pressurization of the storage well causes the carbon dioxide to enter a critical state of liquid state, which is more easily absorbed by the rock formation. During the carbon dioxide injection process, the wellhead end is pressurized to increase the filling pressure and improve the filling effect.

[0006] At present, the existing modular sealing wellhead devices that are suitable for complex formations and the above-mentioned cases are not convenient for efficient pressurization and introduction during use, resulting in uneven compression of carbon dioxide and inability to perform continuous reciprocating pressure injection. Therefore, improvements are made to address the above-mentioned problems. Summary of the Invention

[0007] In response to the problems in the prior art, the present invention provides a modular sealing well head device that is adaptable to complex formations.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a modular sealing wellhead device suitable for complex formations, including a wellhead structure, a protective masonry seat, a docking guide seat, a pressure detector and a connecting guide groove. The protective masonry seat is fixedly cast on the outside of the wellhead structure, the lower end of the wellhead structure is fixedly connected to the docking guide seat, and a connecting guide groove is opened on the docking guide seat. The connecting guide groove is adaptively arranged with the wellhead structure. The docking guide seat is also equipped with a pressure detector for internal pressure detection.

[0009] The wellhead structure is pressurized. The electric motor controls the rotation of the worm, so that the turbines on both sides rotate accordingly. The turbine controls the rotation of the crankshaft through the coordinated drive shaft, so that the hinge ring and the connecting rod drive the compression ring seat to slide through the hinge seat block, and compresses the gas in the pressurized seat. After reaching the specified compression value, the second control valve is used to control the guide to connect the docking pipe.

[0010] Specifically, the wellhead structure includes a pressurized conduction component and a built-in protection frame, the pressurized conduction component is fixedly supported on the built-in protection frame, and the built-in protection frame is adapted to be arranged with the protection base.

[0011] Specifically, the pressurized conduction component includes a drive control mechanism, a first compression processing mechanism and a second compression processing mechanism. One side of the drive control mechanism is driven and connected to the first compression processing mechanism, and the other side of the drive control mechanism is driven and connected to the second compression processing mechanism. The drive control mechanism synchronously controls the operation adjustment of the first compression processing mechanism and the second compression processing mechanism.

[0012] Specifically, the drive control mechanism includes a motor, a protective top plate, a mounting frame, a buffer frame and a support frame. The motor is installed at the central upper end of the protective top plate, the mounting frame is fixedly connected to the lower end side of the protective top plate, and the lower end of the mounting frame is buffer-connected to the support frame through the buffer frame.

[0013] Specifically, the lower end of the motor is fixedly connected to the drive rod, the lower end of the drive rod is fixedly connected to a worm, the worm is meshed with a turbine, the side end of the turbine is fixedly connected to the mating drive shaft, and the turbine is supported by a symmetrical mounting frame, the turbine is rotated and adjusted on the mounting frame, and the bottom of the worm is rotatably connected to the bearing ring seat.

[0014] Specifically, the first compression processing mechanism includes a crankshaft control unit and a compression control unit. The lower end of the crankshaft control unit is movably connected to the compression control unit. The gas compression processing is performed through the movable adjustment of the crankshaft control unit on the compression control unit. The worm can symmetrically drive the two turbines, and then drive the two cooperating drive shafts to rotate, so that the crankshaft control units and compression control units arranged on both sides move in coordination to achieve the purpose of continuous compression. The mounting frame performs buffer support work on the bottom through the buffer frame and the support frame. The lower end of the worm is rotatably connected to the bearing ring seat, and the bearing ring seat facilitates the bottom support and load-bearing work.

[0015] Specifically, the crankshaft control unit includes a hinge ring, a crankshaft, a connecting rod, an articulated seat block, a compression ring seat and a docking support end seat. The motor drives the drive rod and the worm to rotate, and the worm is meshed with the turbine to control the turbine to rotate on the mounting frame, and the turbine is fixedly connected to the crankshaft through the mating drive shaft. The crankshaft rotates on the docking support end seat. A hinge ring is hinged on the crankshaft, and the lower end of the hinge ring is fixed to the connecting rod. The lower end of the connecting rod is articulated to the articulated seat block. When the crankshaft rotates, the hinge ring in the eccentric position can control the movement of the compression ring seat, and the compression ring seat slides in the mating pressurizing seat to compress the gas. The compressed product is then conducted through the opening of the second control valve, and finally guided to the specified position in the well through the guiding docking pipe and the connecting guide groove. The side end is supported by a docking support end seat, and a hinge ring is hinged on the crankshaft. The lower end of the hinge ring is fixedly connected to a connecting rod, and the lower end of the connecting rod is hinged to the hinge seat block. The lower end of the hinge seat block is fixedly connected to a compression ring seat. The structural setting of the pressurized transmission component is convenient for compression matching. The drive control mechanism is used for driving work. The motor can control the rotation of the drive rod and the worm, so that the worm drives the turbine to rotate on the mounting frame. The side end of the turbine is fixed to the matching drive shaft to realize power transmission, so that the matching drive shaft controls the crankshaft to rotate. A hinge ring is provided on the crankshaft to control the movement of the hinge ring. The lower end of the hinge ring is hinged to the hinge seat block through the connecting rod, and can push the compression ring seat back and forth to move on the matching pressurized seat to perform compression regulation.

[0016] Specifically, the compression control unit includes an air guide pipe, a longitudinal pipe, a first control valve, a guide groove seat, a branch pipe, a matching pressurizing seat, a guide docking pipe and a second control valve. The lower end of the air guide pipe is connected to a longitudinal pipe, and the lower end of the longitudinal pipe is connected to the guide groove seat. The first control valve is installed on the guide groove seat to control the connection between the guide groove seat and the branch pipe. The lower end of the branch pipe is connected to the matching pressurizing seat. The lower end of the matching pressurizing seat is connected to a guide docking pipe, and the second control valve is installed on the guide docking pipe. The structural setting of the compression control unit is convenient for matching compression work. The gas is guided to the guide groove seat through the air guide pipe and the longitudinal pipe, and the first control valve controls the connection between the guide groove seat and the branch pipe, so that the gas reaches the inside of the matching pressurizing seat through the branch pipe. When the compression ring seat moves, extrusion and matching are performed. After reaching a certain pressure, the second control valve is opened at this time to guide the compressed product into the well through the guide docking pipe and the connecting guide groove.

[0017] Specifically, the compression ring seat is slidably adjusted on the matching pressurizing seat, and guides the lower end of the docking tube to dock and connect with the connecting guide groove, and the interior of the built-in protection frame supports and fixes the docking support end seat.

[0018] Specifically, the side end of the crankshaft is fixedly connected to the mating drive shaft, the lower end of the bearing ring seat is fixed to the docking guide seat, the lower end of the support frame is fixed to the docking guide seat, and the air guide pipe and the built-in protective frame are connected.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention facilitates compression and fitting work through the structural setting of the pressurized conduction component, wherein the drive control mechanism is used for driving work, and the electric motor can control the rotation of the drive rod and the worm, so that the worm drives the turbine to rotate and fit on the mounting frame, and the side end of the turbine is fixed to the matching drive shaft to realize power transmission, so that the matching drive shaft controls the rotation of the crankshaft, and a hinge ring is provided on the crankshaft to control the movement of the hinge ring. The lower end of the hinge ring is hinged to the hinge seat block through a connecting rod, and can push the compression ring seat back and forth to move on the matching pressurized seat to perform compression regulation work.

[0021] Second, the present invention facilitates the coordinated compression work through the structural setting of the compression control unit. The gas is guided to the guide groove seat through the air guide pipe and the longitudinal pipe, and the first control valve controls the connection between the guide groove seat and the branch pipe, so that the gas reaches the interior of the coordinated pressurizing seat through the branch pipe. When the compression ring seat moves, it is squeezed and matched. After reaching a certain pressure, the second control valve opens at this time to guide the compressed product into the well through the guide docking pipe and the connecting guide groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1This is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0024] Figure 2 This is a split diagram of the main body of the present invention;

[0025] Figure 3 This is a disassembled diagram of the wellhead structure in the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the pressurized conductive component from the front perspective of the present invention;

[0027] Figure 5 This is an exploded view of the pressurized conductive component of the present invention;

[0028] Figure 6 Schematic diagram of the front perspective three-dimensional structure of the drive control mechanism of the present invention;

[0029] Figure 7 This is a disassembled diagram of the drive control mechanism of the present invention;

[0030] Figure 8 is a three-dimensional diagram of the first compression processing mechanism of the present invention;

[0031] Figure 9 A perspective view of a crankshaft control unit according to the present invention;

[0032] Figure 10 It is a three-dimensional diagram of the compression control unit in the present invention.

[0033] In the figure: 1-wellhead structure, 2-protective masonry seat, 3-docking guide seat, 4-pressure detector, 5-connecting guide groove, 6-pressurization conduction component, 7-built-in protection frame, 8-drive control mechanism, 9-first compression processing mechanism, 10-second compression processing mechanism, 11-motor, 12-protective top plate, 13-mounting frame, 14-buffer frame, 15-support frame, 16-drive rod, 17-worm, 18-bearing ring seat, 19-turbine, 20-matching drive shaft, 21-crankshaft control unit, 22-compression control unit, 23-hinge ring, 24-crankshaft, 25-connecting rod, 26-articular seat block, 27-compression ring seat, 28-docking support end seat, 29-air guide pipe, 30-longitudinal pipe, 31-first control valve, 32-guide groove seat, 33-branch pipe, 34-matching pressurization seat, 35-guide docking pipe, 36-second control valve. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Example

[0037] like Figure 1-10 As shown, the modular sealing wellhead device of the present invention, which is adaptable to complex formations, includes a wellhead structure 1, a protective masonry seat 2, a docking guide seat 3, a pressure detector 4, and a connecting guide groove 5. The protective masonry seat 2 is fixedly cast on the outside of the wellhead structure 1. The lower end of the wellhead structure 1 is fixedly connected to the docking guide seat 3, and the docking guide seat 3 is provided with a connecting guide groove 5. The connecting guide groove 5 is adapted to the wellhead structure 1. The docking guide seat 3 is also equipped with a pressure detector 4 for internal pressure detection.

[0038] The wellhead structure 1 is pressurized. The motor 11 controls the worm 17 to rotate, so that the turbines 19 on both sides rotate accordingly. The turbine 19 controls the rotation of the crankshaft 24 by cooperating with the drive shaft 20, so that the hinge ring 23 and the connecting rod 25 drive the compression ring seat 27 to slide through the hinge seat block 26, and compress the gas in the pressurization seat 34. After reaching the specified compression value, the second control valve 36 is used to control the connection of the docking pipe 35.

[0039] The wellhead structure 1 includes a pressurized conductive component 6 and a built-in protective frame 7 . The pressurized conductive component 6 is fixedly supported on the built-in protective frame 7 , and the built-in protective frame 7 is adapted to be arranged with the protective masonry seat 2 .

[0040] The pressurized conduction component 6 includes a drive control mechanism 8, a first compression processing mechanism 9 and a second compression processing mechanism 10. One side of the drive control mechanism 8 is driven and connected to the first compression processing mechanism 9, and the other side of the drive control mechanism 8 is driven and connected to the second compression processing mechanism 10. The drive control mechanism 8 synchronously controls the operation adjustment of the first compression processing mechanism 9 and the second compression processing mechanism 10.

[0041] The drive control mechanism 8 includes a motor 11, a protective top plate 12, a mounting frame 13, a buffer frame 14 and a support frame 15. The motor 11 is installed at the central upper end of the protective top plate 12, and the mounting frame 13 is fixedly connected to the lower end side of the protective top plate 12. The lower end of the mounting frame 13 is buffer-connected to the support frame 15 through the buffer frame 14.

[0042] The lower end of the motor 11 is fixedly connected to the drive rod 16, and the lower end of the drive rod 16 is fixedly connected to a worm 17, and a turbine 19 is meshedly connected to the worm 17. The side end of the turbine 19 is fixedly connected to the mating drive shaft 20, and the turbine 19 is supported by a symmetrical mounting frame 13. The turbine 19 is rotated and adjusted on the mounting frame 13, and the bottom of the worm 17 is rotatably connected to the bearing ring seat 18.

[0043] The first compression processing mechanism 9 includes a crankshaft control unit 21 and a compression control unit 22. The lower end of the crankshaft control unit 21 is movably connected to the compression control unit 22. The gas is compressed by adjusting the crankshaft control unit 21 on the compression control unit 22. The motor 11 works, and the motor 11 drives the drive rod 16 and the worm 17 to rotate. The worm 17 is meshed with the turbine 19, and the turbine 19 is controlled to rotate on the mounting frame 13. The turbine 19 is fixedly connected to the crankshaft 24 through the driving shaft 20. The crankshaft 24 rotates on the docking support end seat 28, and a hinge ring 23 is hingedly set on the crankshaft 24. The lower end of the hinge ring 23 is fixed to the connecting rod 25, and the lower end of the connecting rod 25 is hingedly set to the hinge seat block 26. When the crankshaft 24 rotates, the hinge ring 23 in the eccentric position can control the movement of the compression ring seat 27. The compression ring seat 27 slides in the matching pressurizing seat 34 to compress the gas. After that, the compressed product is conducted through the opening of the second control valve 36, and finally guided to the designated position in the well through the guide docking pipe 35 and the connecting guide groove 5.

[0044] The crankshaft control unit 21 includes a hinge ring 23, a crankshaft 24, a connecting rod 25, an articulated seat block 26, a compression ring seat 27 and a docking support end seat 28. The side end of the crankshaft 24 is docked and supported by the docking support end seat 28. The crankshaft 24 is hinged with a hinge ring 23. The lower end of the hinge ring 23 is fixedly connected to the connecting rod 25. The lower end of the connecting rod 25 is hinged to the articulated seat block 26. The lower end of the articulated seat block 26 is fixedly connected to the compression ring seat 27. The structural setting of the pressurized conduction component 6 facilitates the compression fit work, wherein the drive control mechanism 8 is used In the driving operation, the motor 11 can control the rotation of the driving rod 16 and the worm 17, so that the worm 17 drives the turbine 19 to rotate on the mounting frame 13. The side end of the turbine 19 is fixed to the cooperating driving shaft 20 to realize the transmission of power, so that the cooperating driving shaft 20 controls the rotation of the crankshaft 24. The crankshaft 24 is provided with a hinge ring 23, which can control the movement of the hinge ring 23. The lower end of the hinge ring 23 is hinged to the hinge seat block 26 through a connecting rod 25, and can push the compression ring seat 27 back and forth to move on the cooperating pressurizing seat 34 to perform compression regulation.

[0045] The compression control unit 22 includes an air guide pipe 29, a longitudinal pipe 30, a first control valve 31, a guide groove seat 32, a branch pipe 33, a matching pressurizing seat 34, a guide docking pipe 35 and a second control valve 36. The gas is introduced through the air guide pipe 29, and the gas is conducted to the longitudinal pipe 30 through the air guide pipe 29, and then guided into the guide groove seat 32. The guide groove seat 32 is provided with a first control valve 31, which can control the communication between the guide groove seat 32 and the branch pipe 33, so that the gas reaches the matching pressurizing seat 34 through the branch pipe 33. The lower end of the air guide pipe 29 is connected with the longitudinal pipe 30, and the lower end of the longitudinal pipe 30 is connected with the guide groove seat 32. The first control valve 31 is installed on the guide groove seat 32 to control the communication between the guide groove seat 32 and the branch pipe 33 The lower end of the branch pipe 33 is connected to the matching pressurizing seat 34. The lower end of the matching pressurizing seat 34 is connected with a guide docking pipe 35, and a second control valve 36 is installed on the guide docking pipe 35. The structural setting of the compression control unit 22 is convenient for matching compression work. The gas is guided to the guide groove seat 32 through the air guide pipe 29 and the longitudinal pipe 30, and the first control valve 31 controls the connection between the guide groove seat 32 and the branch pipe 33, so that the gas reaches the inside of the matching pressurizing seat 34 through the branch pipe 33. When the compression ring seat 27 moves, it is squeezed and matched. After reaching a certain pressure, the second control valve 36 is opened at this time to guide the compressed product into the well through the guide docking pipe 35 and the connecting guide groove 5.

[0046] The compression ring seat 27 slides and adjusts on the matching pressurizing seat 34 , and guides the lower end of the docking pipe 35 to dock and connect with the connecting guide groove 5 , and the interior of the built-in protection frame 7 supports and fixes the docking support end seat 28 .

[0047] The side end of the crankshaft 24 is fixedly connected to the mating drive shaft 20, the lower end of the bearing ring seat 18 is fixed to the docking guide seat 3, the lower end of the support frame 15 is fixed to the docking guide seat 3, and the air guide pipe 29 is connected to the built-in protection frame 7.

[0048] The working principle is as follows: when in use, the user installs the docking guide seat 3, the pressure detector 4, and the connecting guide groove 5 at the wellhead position, and then installs the pressurized conductive component 6 and the built-in protective frame 7 on the docking guide seat 3. After the pressurized conductive component 6 and the built-in protective frame 7 are installed, the protective masonry seat 2 is lined to provide support and protection for the wellhead structure 1;

[0049] During operation, gas is introduced through the gas guide pipe 29, and then conducted to the longitudinal pipe 30. The gas is then guided into the guide groove seat 32. The guide groove seat 32 is provided with a first control valve 31, which can control the communication between the guide groove seat 32 and the branch pipe 33, so that the gas reaches the matching pressurizing seat 34 through the branch pipe 33.

[0050] At this time, the motor 11 is working, and the motor 11 drives the driving rod 16 and the worm 17 to rotate, and the worm 17 is meshed with the turbine 19, controlling the turbine 19 to rotate on the mounting frame 13, and the turbine 19 is fixedly connected to the crankshaft 24 through the mating drive shaft 20, and the crankshaft 24 rotates on the docking support end seat 28. A hinge ring 23 is hinged on the crankshaft 24, and the lower end of the hinge ring 23 is fixed to the connecting rod 25. The lower end of the connecting rod 25 is hinged to the hinge seat block 26. When the crankshaft 24 rotates, the hinge ring 23 in the eccentric position can control the movement of the compression ring seat 27, and the compression ring seat 27 slides in the mating pressurizing seat 34 to compress the gas. After that, the compressed product is conducted through the opening of the second control valve 36, and finally guided to the specified position in the well through the guide docking pipe 35 and the connecting guide groove 5.

[0051] The worm 17 can symmetrically drive two turbines 19, and then drive the two cooperating drive shafts 20 to rotate, so that the crankshaft control unit 21 and the compression control unit 22 arranged on both sides can cooperate to move and achieve the purpose of continuous compression. The mounting frame 13 performs the buffer support work at the bottom through the buffer frame 14 and the support frame 15. The lower end of the worm 17 is rotatably connected to the bearing ring seat 18, and the bearing ring seat 18 facilitates the bottom support and load-bearing work to complete the work.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A modular wellhead device for sealing wells adapted to complex formations, characterized by: The invention comprises a wellhead structure (1), a protective masonry seat (2), a docking guide seat (3), a pressure detector (4) and a connecting guide groove (5); the protective masonry seat (2) is fixedly cast on the outside of the wellhead structure (1); the lower end of the wellhead structure (1) is fixedly connected to the docking guide seat (3); and a connecting guide groove (5) is provided on the docking guide seat (3); the connecting guide groove (5) is adapted to be arranged with the wellhead structure (1); and a pressure detector (4) is also installed on the docking guide seat (3) for internal pressure detection; The wellhead structure (1) is pressurized, and the motor (11) controls the worm (17) to rotate, so that the turbines (19) on both sides rotate accordingly. The turbine (19) controls the crankshaft (24) to rotate by cooperating with the drive shaft (20), so that the hinge ring (23) and the connecting rod (25) drive the compression ring seat (27) to slide through the hinge seat block (26), and compress the gas in the pressurization seat (34). After reaching the specified compression value, the second control valve (36) is used to control the connection of the docking pipe (35).

2. The modular sealing wellhead device adapted to complex formations according to claim 1 is characterized by: The wellhead structure (1) comprises a pressurized conduction component (6) and a built-in protection frame (7); the pressurized conduction component (6) is fixedly supported on the built-in protection frame (7), and the built-in protection frame (7) is adapted to be arranged on the protection base (2).

3. The modular sealing wellhead device adapted to complex formations according to claim 2 is characterized by: The pressurized conduction component (6) includes a drive control mechanism (8), a first compression processing mechanism (9) and a second compression processing mechanism (10). One side of the drive control mechanism (8) is drive-connected to the first compression processing mechanism (9), and the other side of the drive control mechanism (8) is drive-connected to the second compression processing mechanism (10). The drive control mechanism (8) synchronously controls the operation and adjustment of the first compression processing mechanism (9) and the second compression processing mechanism (10).

4. The modular sealing wellhead device adapted to complex formations according to claim 3 is characterized by: The drive control mechanism (8) comprises a motor (11), a protective top plate (12), a mounting frame (13), a buffer frame (14) and a support frame (15); the motor (11) is mounted on the central upper end of the protective top plate (12); the mounting frame (13) is fixedly connected to the side of the lower end of the protective top plate (12); and the lower end of the mounting frame (13) is buffer-connected to the support frame (15) via the buffer frame (14).

5. The modular sealing wellhead device adapted to complex formations according to claim 4 is characterized by: The lower end of the motor (11) is fixedly connected to the driving rod (16), the lower end of the driving rod (16) is fixedly connected to a worm (17), the worm (17) is meshedly connected to a turbine (19), the side end of the turbine (19) is fixedly connected to a matching driving shaft (20), and the turbine (19) is supported by a symmetrical mounting frame (13). The turbine (19) is rotatably adjusted on the mounting frame (13), and the bottom of the worm (17) is rotatably connected to a bearing ring seat (18).

6. The modular sealing wellhead device adapted to complex formations according to claim 5 is characterized by: The first compression processing mechanism (9) includes a crankshaft control unit (21) and a compression control unit (22). The lower end of the crankshaft control unit (21) is movably connected to the compression control unit (22). The gas is compressed by adjusting the crankshaft control unit (21) on the compression control unit (22).

7. The modular sealing wellhead device adapted to complex formations according to claim 6 is characterized by: The crankshaft control unit (21) includes a hinge ring (23), a crankshaft (24), a connecting rod (25), an articulated seat block (26), a compression ring seat (27) and a docking support end seat (28). The side end of the crankshaft (24) is docked and supported by the docking support end seat (28). The crankshaft (24) is hingedly provided with a hinge ring (23). The lower end of the hinge ring (23) is fixedly connected to the connecting rod (25). The lower end of the connecting rod (25) is hingedly arranged with the articulated seat block (26). The lower end of the articulated seat block (26) is fixedly connected to the compression ring seat (27).

8. The modular sealing wellhead device adapted to complex formations according to claim 7 is characterized by: The compression control unit (22) comprises an air guide pipe (29), a longitudinal pipe (30), a first control valve (31), a guide groove seat (32), a branch pipe (33), a matching pressurizing seat (34), a guide docking pipe (35) and a second control valve (36). The lower end of the air guide pipe (29) is connected to a longitudinal pipe (30), the lower end of the longitudinal pipe (30) is connected to the guide groove seat (32), the first control valve (31) is installed on the guide groove seat (32) to control the connection between the guide groove seat (32) and the branch pipe (33), the lower end of the branch pipe (33) is connected to the matching pressurizing seat (34), the lower end of the matching pressurizing seat (34) is connected to a guide docking pipe (35), and the second control valve (36) is installed on the guide docking pipe (35).

9. The modular sealing wellhead device adapted to complex formations according to claim 8 is characterized by: The compression ring seat (27) is slidably adjusted on the matching pressurizing seat (34), and guides the lower end of the docking pipe (35) to dock and connect with the connecting guide groove (5), and the interior of the built-in protection frame (7) supports and fixes the docking support end seat (28).

10. The modular sealing wellhead device adapted to complex formations according to claim 9, characterized in that: The side end of the crankshaft (24) is fixedly connected to the matching drive shaft (20), the lower end of the bearing ring seat (18) is fixed to the docking guide seat (3), the lower end of the liner frame (15) is fixed to the docking guide seat (3), and the air guide pipe (29) is connected to the built-in protection frame (7).

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