Oil and gas well one-trip type well cementation tool assembly with one-position multi-effect function

Abstract

The invention discloses an oil and gas well one-trip type well cementation tool assembly with a one-position multi-effect function, and relates to the technical field of well cementation tools, the oil and gas well one-trip type well cementation tool assembly comprises a well cementation assembly, the well cementation assembly comprises an upper connector, an upper shell is fixed to one side of the upper connector, a communicating piece is fixed to one side of the upper shell, and the surface of the communicating piece is sleeved with a vulcanization ring; and one side of the communicating piece is sleeved with an outer barrel piece, a lower connector is embedded in one side of the outer barrel piece, and an upper sliding sleeve is arranged in an inner cavity of the communicating piece. Compared with the prior art, the well cementation device has the beneficial effects that through cooperation of the multi-channel switching mechanism and the pressurization control system, the process conversion efficiency and the operation continuity are remarkably improved, the problems of tedious disassembly and connection delay are effectively solved, the sealing reliability of all channels is guaranteed, well cementation defects caused by operation delay are avoided, and the well cementation device is suitable for well cementation. And meanwhile, rapid switching and intelligent process control of one-turn-to-change are achieved, and the well cementation operation efficiency and the construction quality are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cementing tools, in particular to a one-trip cementing tool assembly for oil and gas wells with multiple functions. Background Art

[0002] In oil and gas well cementing operations, a one-trip cementing tool assembly with multiple functions is required to complete continuous operations in multiple sections, achieving integrated protection of casing centering, cement ring sealing, and wellbore integrity.

[0003] Existing one-trip cementing tool assemblies for oil and gas wells have obvious defects in path switching. They mostly use multi-stage sliding sleeves and matching switching tools to achieve path switching, and multiple accurate operations are required to complete the process conversion. This operational defect not only greatly reduces operational efficiency, but is also likely to lead to the wrong sliding sleeve due to inaccurate positioning, or affect the cementing quality due to untimely conversion, ultimately restricting the overall efficiency of oil and gas well cementing operations. Summary of the Invention

[0004] In view of the above problems existing in the existing one-trip cementing tool assembly for oil and gas wells with multiple functions, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the existing tool assembly is cumbersome to switch the internal passage, and it is impossible to switch the internal passage through simple operations such as pressurization and throwing a ball.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a one-trip cementing tool assembly for oil and gas wells with multiple functions, comprising: a cementing component, comprising an upper joint, an upper shell fixed to one side of the upper joint, a connecting piece fixed to one side of the upper shell, a surface of the connecting piece sleeved with a vulcanized ring, an outer cylinder sleeved on one side of the connecting piece, a lower joint embedded on one side of the outer cylinder, an upper sliding sleeve provided in the inner cavity of the connecting piece, a lower sliding piece provided on one side of the upper sliding sleeve; and,

[0007] The auxiliary component is arranged in the inner cavity of the cementing component, and includes a driving transmission member fixedly connected to the surface of the upper sleeve. A transmission seal is provided on one side of the driving transmission member, and the transmission seal is fixed to the inner wall of the upper sleeve. A guide member is fixed to the inner wall of the driving transmission member.

[0008] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the connecting piece includes a cylinder fixed to one side of the upper shell, a first through hole is opened on the surface of the cylinder, and a first bolt hole is opened on one side of the cylinder.

[0009] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, a second connecting hole is opened on the outer side of the cylinder, a first shear screw is embedded in the inner wall of the cylinder, a third shear screw is embedded in the inner wall of the first bolt hole, and an extrusion rod is fixed to the inner wall of the first through hole.

[0010] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the sliding member includes a sliding sleeve slidably connected to the inner wall of the barrel, and the surface of the sliding sleeve is provided with a second through hole that cooperates with the second connecting hole.

[0011] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the inner wall of the sliding sleeve is movably connected to a limiting claw, the inner wall of the sliding sleeve is fixed with a ball seat, the inner wall of the ball seat is movably connected to a sphere, and a second shear screw is embedded in the surface of the sliding sleeve.

[0012] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multiple functions according to the present invention, the outer cylinder comprises a first cylinder sleeved on one side of the cylinder, and a connecting cylinder is fixed to the inner wall of the first cylinder.

[0013] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the driving transmission member includes a fixed shell fixed to the surface of the upper sliding sleeve, a transmission rod is provided through one side of the fixed shell, a first extrusion block is fixed to one side of the transmission rod, a plug-in rod is fixed to one side of the first extrusion block, and a limit plate is provided on the surface of the plug-in rod.

[0014] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, a first guide rod is fixed to the inner wall of the fixed shell, a first spring is sleeved on the surface of the first guide rod, and a first connecting sleeve is sleeved on the surface of the first spring.

[0015] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the transmission seal includes a connecting shell fixed to the inner wall of the upper sliding sleeve, the inner wall of the connecting shell is fixed with a fixed guide seat, the inner wall of the fixed guide seat is slidably connected with a sliding cross bar, one side of the sliding cross bar is rotatably connected to a connecting slide bar, one side of the connecting slide bar is rotatably connected to a second extrusion block, the inner wall of the connecting shell is fixed with a liquid storage shell, one side of the sliding cross bar is fixed with a piston, the top of the liquid storage shell is connected to a sealing rubber airbag, and the inner wall of the upper sliding sleeve is provided with a connecting groove that cooperates with the sealing rubber airbag.

[0016] As a preferred solution of the one-trip cementing tool assembly for oil and gas wells with multi-effect functions described in the present invention, the guide member includes a second guide rod fixed to the inner wall of the fixed shell, the surface of the second guide rod is sleeved with a second connecting sleeve, the second connecting sleeve is fixed to one side of the second extrusion block, and the surface of the second guide rod is sleeved with a second spring.

[0017] The beneficial effects of the present invention are: through the coordinated cooperation of the multi-channel switching mechanism and the boost control system, the process conversion efficiency and operation continuity are significantly improved, and the problems of cumbersome disassembly and connection delays are effectively solved. It not only ensures the sealing reliability of each channel, but also avoids cementing defects caused by operational delays. At the same time, it realizes "one-turn-and-change" rapid switching and intelligent process control, greatly improving the cementing operation efficiency and construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 The diagram shows the structure of a one-trip cementing tool assembly for oil and gas wells that has multiple functions.

[0020] Figure 2 This is a structural diagram of the upper sliding sleeve of a one-trip cementing tool assembly for oil and gas wells with multiple functions.

[0021] Figure 3 This is a structural diagram of the down-sliding sleeve of a one-trip cementing tool assembly for oil and gas wells with multiple functions.

[0022] Figure 4 Another perspective view of the upper sleeve of the one-trip cementing tool assembly for oil and gas wells with multiple functions.

[0023] Figure 5 A one-trip cementing tool assembly for oil and gas wells with multiple functions Figure 2 A magnified view of center.

[0024] Figure 6 A one-trip cementing tool assembly for oil and gas wells with multiple functions Figure 2 Magnified view of B.

[0025] In the figure: 1. Cementing assembly; 11. Upper joint; 12. Upper shell; 13. Vulcanizing ring; 14. Connecting piece; 14-1. Cylinder; 14-2. First through hole; 14-3. First bolt hole; 14-4. Second connecting hole; 14-5. First shear screw; 14-6. Third shear screw; 14-7. Extrusion rod; 15. Outer cylinder; 15-1. First cylinder; 15-2. Connecting cylinder; 16. Lower joint; 17. Upper sliding sleeve; 18. Lower sliding piece; 18-1. Lower sliding sleeve; 18-2. Second through hole; 18-3. Limiting claw; 18-4. Ball; 18-5. Ball seat; 18-6. Second shear screw; 2. Auxiliary assembly; 21. Drive transmission Parts; 21-1, fixed shell; 21-2, telescopic block; 21-3, transmission rod; 21-4, first extrusion block; 21-5, limit plate; 21-6, plug-in rod; 21-7, first guide rod; 21-8, first connecting sleeve; 21-9, first spring; 22, transmission seal; 22-1, connecting shell; 22-2, second extrusion block; 22-3, fixed guide seat; 22-4, sliding cross bar; 22-5, sealing rubber airbag; 22-6, piston; 22-7, liquid storage shell; 22-8, connecting groove; 22-9, connecting slide rod; 23, guide part; 23-1, second connecting sleeve; 23-2, second guide rod; 23-3, second spring. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a one-trip cementing tool assembly for oil and gas wells with multiple functions. The one-trip cementing tool assembly for oil and gas wells with multiple functions includes a cementing component 1 and an auxiliary component 2.

[0031] Through the coordinated cooperation of cementing component 1 and auxiliary component 2, the process conversion efficiency and operation continuity are significantly improved, and the problems of cumbersome disassembly and connection delays are effectively solved. It not only ensures the sealing reliability of each passage, but also avoids cementing defects caused by operational delays. At the same time, it realizes the "one-turn-and-change" rapid switching and intelligent process control, greatly improving the cementing operation efficiency and construction quality.

[0032] Specifically, the cementing assembly 1 includes an upper joint 11, an upper shell 12 is fixed to one side of the upper joint 11, a connecting piece 14 is fixed to one side of the upper shell 12, a surface of the connecting piece 14 is sleeved with a vulcanized ring 13, one side of the connecting piece 14 is sleeved with an outer cylinder 15, one side of the outer cylinder 15 is embedded with a lower joint 16, the inner cavity of the connecting piece 14 is provided with an upper sliding sleeve 17, and one side of the upper sliding sleeve 17 is provided with a lower sliding piece 18.

[0033] The upper connector 11 realizes quick connection with the wellhead device and adopts API standard thread with tensile strength ≥758MPa. The vulcanized ring 13 provides dynamic sealing function and is made of fluororubber with temperature resistance of 205℃ / pressure resistance of 70MPa and compression permanent deformation rate of <15%.

[0034] Specifically, the auxiliary component 2 is arranged in the inner cavity of the cementing component 1, and includes a driving transmission member 21 fixedly connected to the surface of the upper sleeve 17. A transmission seal 22 is provided on one side of the driving transmission member 21. The transmission seal 22 is fixed to the inner wall of the upper sleeve 17, and a guide member 23 is fixed to the inner wall of the driving transmission member 21.

[0035] The drive transmission part 21 converts axial displacement into multi-directional motion with a transmission efficiency of >90%. It has a built-in tungsten steel wear-resistant bushing with a service life of 500 cycles. The guide part 23 ensures accurate motion trajectory with a straightness error of <0.05mm / m and is hard chrome plated on the surface.

[0036] Example 2

[0037] Reference Figures 2 to 6 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0038] Specifically, the connecting member 14 includes a cylinder 14 - 1 fixed to one side of the upper shell 12 , a first through hole 14 - 2 is opened on the surface of the cylinder 14 - 1 , and a first bolt hole 14 - 3 is opened on one side of the cylinder 14 - 1 .

[0039] The cylinder 14 - 1 is provided with the first through hole 14 - 2 , so as to realize the flow channel switching in different operation stages and meet the multi-process requirements of one-trip operation.

[0040] Specifically, a second connecting hole 14-4 is opened on the outer side of the cylinder 14-1, a first shear screw 14-5 is embedded in the inner wall of the cylinder 14-1, a third shear screw 14-6 is embedded in the inner wall of the first bolt hole 14-3, and an extrusion rod 14-7 is fixed to the inner wall of the first through hole 14-2.

[0041] The first shear screw 14-5, through a precisely machined V-groove setting, can accurately break under a predetermined pressure of 35MPa±2%, triggering the first-level channel switching.

[0042] Specifically, the lower sliding member 18 includes a lower sliding sleeve 18 - 1 slidably connected to the inner wall of the cylinder 14 - 1 , and a second through hole 18 - 2 that matches the second connecting hole 14 - 4 is opened on the surface of the lower sliding sleeve 18 - 1 .

[0043] The lower sleeve 18 - 1 is provided with the second through hole 18 - 2 , so as to establish a secondary flow channel after the shear screw breaks, thereby maintaining the continuity of operation.

[0044] Specifically, the inner wall of the lowering sleeve 18-1 is movably connected to the limiting claw 18-3, the inner wall of the lowering sleeve 18-1 is fixed with a ball seat 18-5, the inner wall of the ball seat 18-5 is movably connected to the sphere 18-4, and the surface of the lowering sleeve 18-1 is embedded with a second shear screw 18-6.

[0045] The limiting claw 18-3 allows the ball to pass through in one direction and prevents backflow through the setting of the inclined locking mechanism, providing anti-backflow protection. At the same time, the ball seat 18-5 can achieve precise seating of the ball 18-4 through the setting of the conical sealing structure, establishing an initial pressure barrier.

[0046] Specifically, the outer cylinder 15 includes a first cylinder 15 - 1 sleeved on one side of the cylinder 14 - 1 , and a connecting cylinder 15 - 2 is fixed to the inner wall of the first cylinder 15 - 1 .

[0047] Specifically, the driving transmission member 21 includes a fixed shell 21-1 fixed to the surface of the upper sliding sleeve 17, a transmission rod 21-3 is provided through one side of the fixed shell 21-1, a first extrusion block 21-4 is fixed on one side of the transmission rod 21-3, a plug-in rod 21-6 is fixed on one side of the first extrusion block 21-4, and a limit plate 21-5 is provided on the surface of the plug-in rod 21-6.

[0048] The driving transmission member 21 can convert the linear motion of the upper sleeve 17 into a multi-directional mechanical action through the setting of a lever-type transmission mechanism. The first extrusion block 21-4 can convert the axial displacement into a lateral thrust through the setting of the inclined contact, triggering the limit plate 21-5 to release the lock.

[0049] Specifically, a first guide rod 21 - 7 is fixed to the inner wall of the fixed shell 21 - 1 , a first spring 21 - 9 is sleeved on the surface of the first guide rod 21 - 7 , and a first connecting sleeve 21 - 8 is sleeved on the surface of the first spring 21 - 9 .

[0050] Specifically, the transmission seal 22 includes a connecting shell 22-1 fixed to the inner wall of the upper sleeve 17, a fixed guide seat 22-3 is fixed to the inner wall of the connecting shell 22-1, and a sliding cross bar 22-4 is slidably connected to the inner wall of the fixed guide seat 22-3. One side of the sliding cross bar 22-4 is rotatably connected to the connecting slide bar 22-9, and one side of the connecting slide bar 22-9 is rotatably connected to the second extrusion block 22-2. A liquid storage shell 22-7 is fixed to the inner wall of the connecting shell 22-1, a piston 22-6 is fixed to one side of the sliding cross bar 22-4, and the top of the liquid storage shell 22-7 is connected to a sealing rubber airbag 22-5. The inner wall of the upper sleeve 17 is provided with a connecting groove 22-8 that cooperates with the sealing rubber airbag 22-5.

[0051] The sealing rubber airbag 22-5 is hydraulically expanded to provide emergency sealing when the main seal fails, forming a double protection mechanism.

[0052] Specifically, the guide member 23 includes a second guide rod 23-2 fixed to the inner wall of the fixed shell 21-1, the surface of the second guide rod 23-2 is sleeved with a second connecting sleeve 23-1, the second connecting sleeve 23-1 is fixed to one side of the second extrusion block 22-2, and the surface of the second guide rod 23-2 is sleeved with a second spring 23-3.

[0053] The guide member 23 can ensure the accuracy of the motion trajectory of the second extrusion block 22-2 and avoid jamming by setting a precision sliding pair.

[0054] When in use, the initial equipment is in standby mode, the first channel remains completely unobstructed, and the limit claws 18-3 in the channel are in an expanded position to provide an unobstructed path for subsequent operations. The operator needs to confirm that all connection parts are well sealed and the pressure gauge reading is within a safe range.

[0055] When the ball 18-4 is put into operation, the operation process is officially started. When the ball falls along the pipe wall to the ball seat 18-5, the one-way locking mechanism will be triggered: during the downward process, the ball passes through the limit claw 18-3 smoothly; and during the reverse movement, the inclined structure of the claw will be automatically locked. As the pressure continues to increase, the lowering sleeve 18-1 begins to move downward under the action of hydraulic pressure. At this time, the vulcanized ring 13 is gradually compressed and deformed to achieve reliable sealing. When the system pressure reaches the corresponding breaking pressure, the first shear screw 14-5 breaks, and the lowering sleeve 18-1 completely cuts off the first channel.

[0056] When the pressure is continuously increased to the corresponding fracture pressure, the second shear screw 18-6 breaks, and the ball seat 18-5 assembly separates from the main body. At this time, the liquid flows through the second channel formed by the second through hole 18-2. When three-level channel switching is required, the operator puts in a special ball. When the pressure rises to the corresponding fracture pressure, the third shear screw 14-6 breaks, and the upper sleeve 17 moves downward to open the third channel. At the same time, the check mechanism designed inside it will be deployed synchronously to form a one-way flow structure.

[0057] During the downward movement of the upper sleeve 17, the corresponding transmission rod 21-3 will be squeezed and driven by the extrusion rod 14-7 under the action of gravity, driving the first extrusion block 21-4 to move, thereby driving the plug-in rod 21-6 through the first extrusion block 21-4 to release the limit lock on the limit plate 21-5, and then the telescopic block 21-2 will pop out quickly under the elastic force generated by the recovery deformation of the first spring 21-9, and impact the inner cavity of the first through hole 14-2, thereby achieving the effect of clearing and preventing blockage.

[0058] During the movement of the first extrusion block 21-4, the connecting slide rod 22-9 will be driven to transmit to the corresponding sliding cross bar 22-4 by squeezing the second extrusion block 22-2. The sliding cross bar 22-4 will first drive the liquid storage shell 22-7 to move horizontally as a whole under the action of damping, thereby driving the sealing rubber airbag 22-5 to move to the appropriate position. Then the sliding cross bar 22-4 will squeeze the piston 22-6 to pressurize the material inside the liquid storage shell 22-7, so that it enters the inner cavity of the sealing rubber airbag 22-5, driving it to expand, thereby ejecting the broken third shear screw 14-6 to avoid it causing other effects on the connection of the equipment.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A one-trip cementing tool assembly for oil and gas wells with multiple functions, characterized by: include, A cementing assembly (1) comprises an upper joint (11), an upper shell (12) is fixed to one side of the upper joint (11), a connecting piece (14) is fixed to one side of the upper shell (12), a surface of the connecting piece (14) is sleeved with a vulcanized ring (13), an outer cylinder (15) is sleeved on one side of the connecting piece (14), a lower joint (16) is embedded in one side of the outer cylinder (15), an upper sliding sleeve (17) is provided in the inner cavity of the connecting piece (14), and a lower sliding piece (18) is provided on one side of the upper sliding sleeve (17); and, The auxiliary component (2) is arranged in the inner cavity of the cementing component (1), and includes a driving transmission member (21) fixedly connected to the surface of the upper sleeve (17), a transmission seal (22) is provided on one side of the driving transmission member (21), the transmission seal (22) is fixed to the inner wall of the upper sleeve (17), and a guide member (23) is fixed to the inner wall of the driving transmission member (21).

2. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 1, characterized in that: The connecting piece (14) comprises a cylinder (14-1) fixed to one side of the upper shell (12), a first through hole (14-2) is opened on the surface of the cylinder (14-1), and a first bolt hole (14-3) is opened on one side of the cylinder (14-1).

3. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 2, characterized in that: A second connecting hole (14-4) is opened on the outer side of the cylinder (14-1), a first shear screw (14-5) is embedded in the inner wall of the cylinder (14-1), a third shear screw (14-6) is embedded in the inner wall of the first bolt hole (14-3), and an extrusion rod (14-7) is fixed to the inner wall of the first through hole (14-2).

4. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 3, characterized in that: The lower sliding member (18) comprises a lower sliding sleeve (18-1) slidably connected to the inner wall of the cylinder (14-1), and a second through hole (18-2) matching the second connecting hole (14-4) is provided on the surface of the lower sliding sleeve (18-1).

5. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 4, characterized in that: The inner wall of the lowering sleeve (18-1) is movably connected to a limiting claw (18-3), the inner wall of the lowering sleeve (18-1) is fixed with a ball seat (18-5), the inner wall of the ball seat (18-5) is movably connected to a sphere (18-4), and a second shear screw (18-6) is embedded in the surface of the lowering sleeve (18-1).

6. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 5, characterized in that: The outer cylinder (15) comprises a first cylinder (15-1) sleeved on one side of the cylinder (14-1), and a connecting cylinder (15-2) is fixed on the inner wall of the first cylinder (15-1).

7. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 6, characterized in that: The driving transmission member (21) comprises a fixed shell (21-1) fixed to the surface of the upper sliding sleeve (17); a transmission rod (21-3) is provided through one side of the fixed shell (21-1); a first extrusion block (21-4) is fixed to one side of the transmission rod (21-3); a plug-in rod (21-6) is fixed to one side of the first extrusion block (21-4); and a limiting plate (21-5) is sleeved on the surface of the plug-in rod (21-6).

8. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 7, characterized in that: A first guide rod (21-7) is fixed to the inner wall of the fixed shell (21-1), a first spring (21-9) is sleeved on the surface of the first guide rod (21-7), and a first connecting sleeve (21-8) is sleeved on the surface of the first spring (21-9).

9. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 8, characterized in that: The transmission seal (22) comprises a connecting shell (22-1) fixed to the inner wall of the upper sliding sleeve (17); a fixed guide seat (22-3) is fixed to the inner wall of the connecting shell (22-1); a sliding cross bar (22-4) is slidably connected to the inner wall of the fixed guide seat (22-3); one side of the sliding cross bar (22-4) is rotatably connected to a connecting slide bar (22-9); one side of the connecting slide bar (22-9) is rotatably connected to a second extrusion block (22-2); a liquid storage shell (22-7) is fixed to the inner wall of the connecting shell (22-1); a piston (22-6) is fixed to one side of the sliding cross bar (22-4); a top of the liquid storage shell (22-7) is connected to a sealing rubber airbag (22-5); and a connecting groove (22-8) that cooperates with the sealing rubber airbag (22-5) is provided on the inner wall of the upper sliding sleeve (17).

10. The one-trip cementing tool assembly for oil and gas wells with multiple functions as claimed in claim 9, characterized in that: The guide member (23) comprises a second guide rod (23-2) fixed to the inner wall of the fixed shell (21-1); a second connecting sleeve (23-1) is sleeved on the surface of the second guide rod (23-2); the second connecting sleeve (23-1) is fixed to one side of the second extrusion block (22-2); and a second spring (23-3) is sleeved on the surface of the second guide rod (23-2).

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