Plug-in mounting type casing head for deep sea oil drilling

Abstract

The invention belongs to the technical field of casing head equipment, and discloses a plug-in mounting type casing head for deep sea oil drilling, which is technically characterized by comprising a casing head body and a pipe body, fixing rings are fixedly mounted at two ends of the casing head body respectively, a positioning ring is fixedly mounted at the end of the pipe body, a slot is formed in the surface of each fixing ring, and a through hole is formed in the surface of each positioning ring. An inserting ring is fixedly installed on the surface of the positioning ring, a positioning mechanism is arranged in the fixing ring and comprises a clamping assembly and an adjusting assembly, a sealing mechanism is arranged in the inserting groove and comprises a sealing assembly and a monitoring assembly, and the clamping assembly and the adjusting assembly are arranged to be matched with each other, so that the sealing assembly can seal the sealing assembly and the monitoring assembly; the inserting ring can be conveniently positioned in the inserting groove in the surface of the fixing ring, then the pipe body can be conveniently mounted and dismounted at the end of the casing head body, and the problems that at present, workers need to manually mount multiple sets of bolts, the labor intensity is large, and the mounting efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of casing head equipment, and specifically relates to an insert-mounted casing head for deep-sea oil drilling. Background Art

[0002] With the continuous development of science and technology, the oil extraction technology is also constantly improving. For the extraction of deep-sea oil, there are many mechanical and equipment requirements to meet the development and progress of the extraction work. In the extraction and transportation of oil, oil casings are often used, and casing heads are often required for docking during the installation of oil casings.

[0003] The casing head is an important connecting piece between the casing and the wellhead device, and is a device used for connecting between various layers of casings, between the casing and the blowout preventer, and for supporting and connecting with the oil production wellhead after well completion.

[0004] When the existing casing head is installed with the casing, it generally uses a flange and bolts for threaded connection for fixation. When using the existing connection method, it requires workers to manually install multiple groups of bolts, with a large labor intensity and low installation efficiency. Moreover, fasteners such as bolts are directly exposed outside the casing head and the casing, and the fasteners are prone to rust and looseness, resulting in poor stability at the connection between the casing head and the casing. Summary of the Invention

[0005] The purpose of the present invention is to provide an insert-mounted casing head for deep-sea oil drilling to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An insert-mounted casing head for deep-sea oil drilling, including a casing head body and a pipe body. Fixed rings are respectively fixedly installed at both ends of the casing head body, and a positioning ring is fixedly installed at the end of the pipe body. An annular slot is formed on the surface of the fixed ring, and an insertion ring that cooperates with the slot is fixedly installed on the surface of the positioning ring. A positioning mechanism that cooperates with the insertion ring is arranged inside the fixed ring. The positioning mechanism includes a clamping component and an adjusting component. The clamping component is located inside the fixed ring and is connected to the insertion ring, and the adjusting component is located inside the fixed ring and is connected to the clamping component. The adjusting component is used to install and disassemble the insertion ring in the slot by cooperating with the clamping component. A sealing mechanism that cooperates with the insertion ring is arranged in the slot. The sealing mechanism includes a sealing component and a monitoring component. The sealing component is located on the side wall of the slot and is connected to the insertion ring. The sealing component is used to seal the gap between the slot and the insertion ring. The monitoring component is located inside the slot and is used to monitor the sealing state of the gap between the slot and the insertion ring.

[0008] As a further solution of the present invention: The clamping component includes a plurality of clamping holes which are arranged in a circular shape and equally spaced on the surface of the insertion ring. A circular cavity is formed inside the fixed ring. A plurality of connecting holes communicating with the slot are formed on the outer side wall of the cavity. A plurality of fixed plates opposite to the connecting holes are fixedly installed in the cavity. A plurality of bearing plates are slidably installed in the cavity along the diameter direction of the fixed ring. An extrusion spring is fixedly installed on the side wall of the fixed plate, and the telescopic end of the extrusion spring is connected to the bearing plate. A clamping column which passes through the connecting hole and cooperates with the clamping hole is fixedly installed on the side wall of the bearing plate.

[0009] As a further solution of the present invention: The adjusting component includes a control ring rotatably installed in the cavity, and a plurality of winding rollers rotatably installed in the cavity. The winding rollers are located between the control ring and the fixed plate. A pulling rope is fixedly installed on the side wall of the bearing plate. The end of the pulling rope away from the bearing plate passes through the fixed plate and is connected to the winding roller. A circular gear ring is arranged on the inner side wall of the control ring. A fixed gear disk meshing with the gear ring is fixedly installed on the surface of the winding roller. Two semi-circular driving frames are detachably installed on the surface of the fixed ring. A plurality of first magnetic positioning pieces are fixedly installed on the side wall of the driving frame facing the fixed ring. A plurality of second magnetic positioning pieces cooperating with the first magnetic positioning pieces are fixedly installed on the outer side wall of the control ring. A limiting portion cooperating with the fixed ring is arranged on the surface of the driving frame.

[0010] As a further solution of the present invention: The limiting portion includes a plurality of limiting holes which are arranged in a circular shape and equally spaced on the surface of the fixed ring. A limiting rod cooperating with the limiting hole is rotatably installed on the surface of the driving frame.

[0011] As a further solution of the present invention: The sealing component includes a circular first inner sealing ring fixedly installed on the inner side wall of the slot, a second inner sealing ring cooperating with the first inner sealing ring fixedly installed on the inner side wall of the insertion ring, a circular first outer sealing ring fixedly installed on the outer side wall of the slot, and a second outer sealing ring cooperating with the first outer sealing ring fixedly installed on the outer side wall of the insertion ring.

[0012] As a further solution of the present invention: The monitoring component includes a detection cavity formed in the slot. The detection cavity is located between the first inner sealing ring and the first outer sealing ring, and a humidity sensor is arranged in the detection cavity.

[0013] As a further solution of the present invention: Magnetic strips are fixedly installed at both ends of the two driving frames facing each other.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the clamping component and the adjusting component to cooperate with each other, the insertion ring can be conveniently positioned in the slot on the surface of the fixing ring, and then the pipe body can be conveniently installed and disassembled at the end of the casing head body, solving the problem that at present, workers need to manually install multiple groups of bolts, resulting in high labor intensity and low installation efficiency.

[0015] By setting the sealing component to cooperate with the insertion ring and the slot, the clamping component and the adjusting component can be sealed and protected, effectively avoiding rusting of the clamping component and the adjusting component, and effectively preventing unauthorized personnel from carrying out destructive disassembly of the pipe body, solving the problem that at present, fasteners such as bolts are directly exposed outside the casing head and the casing, and the fasteners are prone to rust and looseness.

[0016] By setting the monitoring component to cooperate with the sealing component, the sealing condition of the gap between the insertion ring and the slot can be monitored in real time, and when leakage occurs, it can be repaired in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention Figure 1 。

[0018] Figure 2 is a schematic three-dimensional structure diagram of an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention Figure 2 。

[0019] Figure 3 is a schematic front view structure diagram of an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention.

[0020] Figure 4 is Figure 3 an enlarged structure diagram of A in

[0021] Figure 5 is a schematic structure diagram of a fixing ring and its connection structure in an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention.

[0022] Figure 6 is a schematic structure diagram of a positioning ring and its connection structure in an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention.

[0023] Figure 7 is a schematic structure diagram of a control ring in an insertion-mounted casing head for deep-sea oil drilling provided in an embodiment of the present invention.

[0024] Figure 8 is Figure 7 an enlarged structure diagram of B in

[0025] Figure 9 This is a schematic diagram of a drive frame and its connection structure in an insert - type casing head for deep - sea oil drilling provided in an embodiment of the present invention.

[0026] Wherein: 1 - casing head body, 11 - fixing ring, 2 - pipe body, 21 - positioning ring, 3 - slot, 4 - insertion ring, 5 - positioning mechanism, 51 - clamping assembly, 511 - clamping hole, 512 - cavity, 513 - fixing plate, 514 - connection hole, 515 - bearing plate, 516 - clamping post, 517 - compression spring, 52 - adjusting assembly, 521 - control ring, 522 - winding roller, 523 - pulling rope, 524 - gear ring, 525 - fixed gear disk, 526 - drive frame, 527 - first magnetic positioning piece, 528 - second magnetic positioning piece, 6 - closing mechanism, 61 - sealing assembly, 611 - first inner sealing ring, 612 - second inner sealing ring, 613 - first outer sealing ring, 614 - second outer sealing ring, 62 - monitoring assembly, 621 - detection cavity, 622 - humidity sensor, 7 - limiting part, 71 - limiting rod, 72 - limiting hole, 8 - magnetic strip. Specific embodiments

[0027] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0028] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0029] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown in the figure, it is a structural diagram of an insertion-mounted casing head for deep-sea oil drilling provided by an embodiment of the present invention, including a casing head body 1 and a pipe body 2. Fixed rings 11 are respectively fixedly installed at both ends of the casing head body 1. A positioning ring 21 is fixedly installed at the end of the pipe body 2. An annular slot 3 is formed on the surface of the fixed ring 11. An insertion ring 4 that cooperates with the slot 3 is fixedly installed on the surface of the positioning ring 21. A positioning mechanism 5 that cooperates with the insertion ring 4 is arranged inside the fixed ring 11. The positioning mechanism 5 includes a clamping component 51 and an adjusting component 52. The clamping component 51 is located inside the fixed ring 11 and is connected to the insertion ring 4. The adjusting component 52 is located inside the fixed ring 11 and is connected to the clamping component 51. The adjusting component 52 is used to install and disassemble the insertion ring 4 in the slot 3 by cooperating with the clamping component 51. A sealing mechanism 6 that cooperates with the insertion ring 4 is arranged inside the slot 3. The sealing mechanism 6 includes a sealing component 61 and a monitoring component 62. The sealing component 61 is located on the side wall of the slot 3 and is connected to the insertion ring 4. The sealing component 61 is used to seal the gap between the slot 3 and the insertion ring 4. The monitoring component 62 is located inside the slot 3. The monitoring component 62 is used to monitor the sealing state of the gap between the slot 3 and the insertion ring 4.

[0030] When it is necessary to connect the pipe body 2 and the casing head body 1, the insertion ring 4 on the surface of the positioning ring 21 at the end of the pipe body 2 is inserted into the slot 3 on the surface of the fixed ring 11 at the end of the casing head body 1. The adjusting component 52 and the clamping component 51 cooperate with each other, and the position of the insertion ring 4 can be conveniently fixed in the slot 3. By the cooperation of the insertion ring 4 and the slot 3, the fixed ring 11 and the positioning ring 21 can be connected into a whole, and then the pipe body 2 is fixedly installed at both ends of the casing head 1 body. After the pipe body 2 and the casing head body 1 are installed, the sealing component 61 can automatically seal the gap between the insertion ring 4 and the slot 3. The clamping component 51 and the adjusting component 52 as a whole are located inside the fixed ring 11, and the sealing component 61 can effectively prevent the clamping component 51 from being exposed to the external environment, thereby effectively preventing the clamping component 51 and the adjusting component 52 from rusting. During use, the monitoring component 62 can monitor the sealing condition of the gap between the insertion ring 4 and the slot 3 in real time. When there is a leakage condition in the gap between the insertion ring 4 and the slot 3, the monitoring component 62 can issue a warning signal in time, and the staff can repair it in time. When it is necessary to disassemble the pipe body 2 on the surface of the casing head body 1, the adjusting component 52 and the clamping component 51 cooperate with each other, and the positioning of the insertion ring 4 can be conveniently released in the slot 3, and then the insertion ring 4 can be conveniently taken out of the slot 3.

[0031] Such as Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、Figure 8 As shown, as a preferred embodiment of the present invention, the clamping assembly 51 includes a plurality of clamping holes 511 formed on the surface of the insertion ring 4 and distributed at equal intervals in a circular shape. An annular cavity 512 is formed inside the fixed ring 11. A plurality of connection holes 514 communicating with the slot 3 are formed on the outer side wall of the cavity 512. A plurality of fixing plates 513 opposite to the connection holes 514 are fixedly installed inside the cavity 512. A plurality of bearing plates 515 are slidably installed inside the cavity 512 along the diameter direction of the fixed ring 11. A compression spring 517 is fixedly installed on the side wall of the fixing plate 513. The telescopic end of the compression spring 517 is connected to the bearing plate 515. A clamping post 516 passing through the connection hole 514 and cooperating with the clamping hole 511 is fixedly installed on the side wall of the bearing plate 515.

[0032] Initially, the compression spring 517 exerts a thrust on the bearing plate 515, and the clamping post 516 on the surface of the bearing plate 515 extends through the connection hole 514 into the slot 3. When the pipe body 2 needs to be installed, the adjusting assembly 52 exerts a pulling force on the bearing plate 515 to move the clamping post 516 outside the slot 3. At this time, the insertion ring 4 is inserted into the slot 3. After the insertion ring 4 is installed in the slot 3, the adjusting assembly 52 releases the pulling force on the bearing plate 515, and the compression spring 517 pushes the bearing plate 515 to move backward to its original position. At this time, the clamping post 516 extends into the slot 3 again and passes through the clamping hole 511 on the surface of the insertion ring 4. The plurality of clamping posts 516 cooperate with the clamping holes 511, and the insertion ring 4 can be conveniently fixed in the slot 3. At this time, the pipe body 2 is stably fixed at the end of the casing head body 1. When the pipe body 2 needs to be disassembled, the adjusting assembly 52 exerts a pulling force on the bearing plate 515 to move the clamping post 516 outside the slot 3. At this time, the clamping post 526 is separated from the clamping hole 511, and the insertion ring 4 can be conveniently taken out of the slot 3, and then the pipe body 2 can be conveniently removed from the end of the casing head body 1.

[0033] As Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9As shown, as a preferred embodiment of the present invention, the adjusting assembly 52 includes a control ring 521 rotatably installed in the cavity 512. A plurality of winding rollers 522 are rotatably installed in the cavity 512. The winding rollers 522 are located between the control ring 521 and the fixing plate 513. A pulling rope 523 is fixedly installed on the side wall of the bearing plate 515. One end of the pulling rope 523 away from the bearing plate 515 passes through the fixing plate 513 and is connected to the winding roller 522. A ring-shaped gear ring 524 is provided on the inner side wall of the control ring 521. A fixed gear disk 525 meshingly connected with the gear ring 524 is fixedly installed on the surface of the winding roller 522. Two semi-circular driving frames 526 are detachably installed on the surface of the fixed ring 11. A plurality of first magnetic positioning pieces 527 are fixedly installed on the side wall of the driving frame 526 facing the fixed ring 11. A plurality of second magnetic positioning pieces 528 cooperating with the first magnetic positioning pieces 527 are fixedly installed on the outer side wall of the control ring 521. A limiting portion 7 cooperating with the fixed ring 11 is provided on the surface of the driving frame 526.

[0034] Initially, the staff stores the driving frame 526. When it is necessary to install and disassemble the pipe body 2, the staff sleeves the two driving frames 526 relatively on the outside of the fixed ring 11 and pushes the driving frame 526 to rotate on the surface of the fixed ring 11. When the driving frame 526 rotates, it drives the first magnetic positioning piece 527 to rotate synchronously. The first magnetic positioning piece 527 is integrated with the second magnetic positioning piece 528 through magnetic attraction. The first magnetic positioning piece 527 and the second magnetic positioning piece 528 cooperate with each other to drive the control ring 521 to rotate in the cavity 512. The control ring 521 drives the gear ring 524 to rotate synchronously. The gear ring 524 and the fixed gear disk 525 are in meshing transmission to drive the winding roller 522 to rotate in the cavity 512. When the winding roller 522 rotates, it winds up the pulling rope 523. The pulling rope 523 pulls the bearing plate 515 to move in the cavity 512, and thus the position of the clamping post 516 can be adjusted conveniently. After the insertion ring 4 is fixed in the slot 3, the driving frame 526 is removed from the surface of the fixed ring 11. The clamping assembly 51 and the adjusting assembly 52 as a whole are inside the fixed ring 11. The sealing assembly 61 seals and protects the gap between the insertion ring 4 and the slot 3, effectively preventing the clamping assembly 51 and the adjusting assembly 52 from rusting. And it effectively prevents unauthorized personnel from destructively disassembling the pipe body 2.

[0035] As Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 9 As shown, as a preferred embodiment of the present invention, the limiting portion 7 includes a plurality of limiting holes 72 arranged in an annular and equally spaced manner on the surface of the fixed ring 11. A limiting rod 71 cooperating with the limiting holes 72 is rotatably installed on the surface of the driving frame 526.

[0036] When the driving frame 526 is installed on the surface of the fixed ring 11 and rotates, the limiting rod 71 and the limiting hole 72 are separated from each other at this time. After the driving frame 526 rotates to a suitable position, the limiting rod 71 is rotated and inserted into the limiting hole 72. The limiting rod 71 and the limiting hole 72 cooperate with each other, and the driving frame 526 can be temporarily positioned on the surface of the fixed ring 11, which is convenient for subsequent adjustment of the position of the driving frame 526 again.

[0037] Such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown in, as a preferred embodiment of the present invention, the sealing assembly 61 includes a ring-shaped first inner sealing ring 611 fixedly installed on the inner side wall of the slot 3, a second inner sealing ring 612 fixedly installed on the inner side wall of the insertion ring 4 and cooperating with the first inner sealing ring 611, a ring-shaped first outer sealing ring 613 fixedly installed on the outer side wall of the slot 3, and a second outer sealing ring 614 fixedly installed on the outer side wall of the insertion ring 4 and cooperating with the first outer sealing ring 613.

[0038] After the insertion ring 4 is inserted into the slot 3, the first inner sealing ring 611 and the second inner sealing ring 612 are pressed and fitted with each other, the first outer sealing ring 613 and the second outer sealing ring 614 are pressed and fitted with each other. The first inner sealing ring 611, the second inner sealing ring 612, the first outer sealing ring 613 and the second outer sealing ring 614 cooperate with each other, and the gap between the insertion ring 4 and the slot 3 can be double-sealed and protected, and the fastening components such as the clamping column 516 can be protected against rust.

[0039] Such as Figure 3 , Figure 4 , Figure 5 As shown in, as a preferred embodiment of the present invention, the monitoring assembly 62 includes a detection cavity 621 opened in the slot 3. The detection cavity 621 is located between the first inner sealing ring 611 and the first outer sealing ring 613, and a humidity sensor 622 is arranged in the detection cavity 621.

[0040] After the insertion ring 4 is installed in the slot 3, the first inner sealing ring 611 and the second inner sealing ring 612 cooperate with each other to seal and protect one side of the detection cavity 621, and the first outer sealing ring 613 and the second outer sealing ring 614 cooperate with each other to seal and protect the other side of the detection cavity 621. The humidity sensor 622 monitors the humidity in the detection cavity 621 in real time. When there is a leakage in the gap between the insertion ring 4 and the slot 3, more moisture appears in the detection cavity 621 at this time, and the humidity sensor 622 can send out a warning signal in time.

[0041] Such as Figure 9As shown, as a preferred embodiment of the present invention, magnetic strips 8 are fixedly mounted on opposite ends of the two sets of driving frames 526.

[0042] When the two groups of drive frames 526 are relatively placed on the outside of the fixed ring 11, the magnetic strips 8 at the ends of the two groups of drive frames 526 are connected into a whole through magnetic attraction, which effectively improves the stability of the two groups of drive frames 526 when rotating on the outside of the fixed ring 11. After use, the drive frames 526 can be easily removed from the surface of the fixed ring 11.

[0043] The working principle of the present invention is: initially, the staff will store the driving frame 526. When the tube body 2 needs to be installed and disassembled, the staff will relatively sleeve the two groups of driving frames 526 on the outside of the fixing ring 11, and push the driving frame 526 to rotate on the surface of the fixing ring 11. When the driving frame 526 rotates, it drives the first magnetic positioning piece 527 to rotate synchronously. The first magnetic positioning piece 527 is connected to the second magnetic positioning piece 528 as a whole through magnetic attraction. The first magnetic positioning piece 527 cooperates with the second magnetic positioning piece 528 to drive the control ring 521 to rotate in the cavity 512. The control ring 521 drives the gear ring 524 to rotate synchronously. The gear ring 524 engages with the fixed gear disc 525 for transmission, which can drive the winding roller 522 to rotate in the cavity 512. When the winding roller 522 rotates, it reels the pulling rope 523. The pulling rope 523 pulls the bearing plate 515 to move in the cavity 512, so that the position of the clamping column 516 can be conveniently adjusted. When the clamping column 516 moves to the outside of the slot 3, the plug ring 4 is inserted into the slot 3. After the plug ring 4 is installed in the slot 3, the driving frame 526 is pushed to rotate in the opposite direction, thereby driving the control ring 521 to rotate in the opposite direction in the cavity 512, releasing the pulling force on the supporting plate 515, and the extrusion spring 517 pushes the supporting plate 515 to move in the opposite direction to its original position. At this time, the clamping column 516 extends into the slot 3 again and passes through the clamping hole 511 on the surface of the plug ring 4. Multiple groups of clamping columns 516 cooperate with the clamping holes 511 to conveniently fix the plug ring 4 in the slot 3. At this time, the tube body 2 is stably fixed to the end of the sleeve head body 1.

[0044] When the position of the tube body 2 is fixed, the driving frame 526 is removed from the surface of the fixing ring 11, the first inner sealing ring 611 and the second inner sealing ring 612 are pressed and fitted with each other, the first outer sealing ring 613 and the second outer sealing ring 614 are pressed and fitted with each other, and the first inner sealing ring 611, the second inner sealing ring 612, the first outer sealing ring 613 and the second outer sealing ring 614 cooperate with each other, which can provide double sealing protection for the gap between the insert ring 4 and the slot 3, and can provide anti-corrosion protection for the fastening parts such as the clamping column 516. It can also effectively prevent irrelevant personnel from destructively disassembling the tube body 2.

[0045] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A plug-in type casing head for deep-sea oil drilling, comprising a casing head body and a pipe body, wherein both ends of the casing head body are respectively fixedly installed with fixing rings, and the end of the pipe body is fixedly installed with a positioning ring, characterized in that: The surface of the fixing ring is provided with an annular slot, and the surface of the positioning ring is fixedly provided with an insert ring that cooperates with the slot; A positioning mechanism cooperating with the insert ring is arranged in the fixing ring, and the positioning mechanism includes a clamping assembly and an adjusting assembly; The clamping assembly is located in the fixed ring and connected to the plug ring, the adjusting assembly is located in the fixed ring and connected to the clamping assembly, and the adjusting assembly is used to install and remove the plug ring in the slot by cooperating with the clamping assembly; A closing mechanism cooperating with the insert ring is arranged in the slot, and the closing mechanism includes a sealing component and a monitoring component; The sealing component is located on the side wall of the slot and connected to the insert ring. The sealing component is used to seal the gap between the slot and the insert ring. The monitoring component is located in the slot and is used to monitor the sealing state of the gap between the slot and the insert ring.

2. The plug-in installation type casing head for deep-sea oil drilling according to claim 1, characterized in that: The clamping assembly includes a plurality of groups of clamping holes arranged in an annular shape and at equal intervals on the surface of the insert ring, an annular cavity is arranged inside the fixing ring, a plurality of connecting holes connected to the slots are arranged outwardly on the side wall of the cavity, a plurality of fixing plates arranged opposite to the connecting holes are fixedly installed in the cavity, a plurality of bearing plates are slidably installed in the cavity along the diameter direction of the fixing ring, an extrusion spring is fixedly installed on the side wall of the fixing plate, the telescopic end of the extrusion spring is connected to the bearing plate, and a clamping column passing through the connecting hole and cooperating with the clamping hole is fixedly installed on the side wall of the bearing plate.

3. The plug-in installation type casing head for deep-sea oil drilling according to claim 2, characterized in that: The adjusting component includes a control ring rotatably installed in a cavity, multiple groups of winding rollers rotatably installed in the cavity, the winding roller is located between the control ring and the fixed plate, a pulling rope is fixedly installed on the side wall of the load-bearing plate, the end of the pulling rope away from the load-bearing plate passes through the fixed plate and is connected to the winding roller, the inner wall of the control ring is provided with an annular gear ring, a fixed gear disk meshing with the gear ring is fixedly installed on the surface of the winding roller, two groups of semicircular driving frames are detachably installed on the surface of the fixed ring, multiple groups of first magnetic positioning plates are fixedly installed on the side wall of the driving frame facing the fixed ring, multiple groups of second magnetic positioning plates cooperating with the first magnetic positioning plates are fixedly installed on the outer wall of the control ring, and a limiting part cooperating with the fixed ring is provided on the surface of the driving frame.

4. The plug-in installation casing head for deep-sea oil drilling according to claim 3, characterized in that: The limiting part comprises a plurality of groups of limiting holes which are arranged in an annular shape and are distributed at equal intervals on the surface of the fixing ring, and a limiting rod which cooperates with the limiting holes is rotatably mounted on the surface of the driving frame.

5. The plug-in installation type casing head for deep-sea oil drilling according to claim 1, characterized in that: The sealing assembly includes a first annular inner sealing ring fixedly installed on the inner side wall of the slot, a second inner sealing ring fixedly installed on the inner side wall of the insert ring and cooperating with the first inner sealing ring, a first annular outer sealing ring fixedly installed on the outer side wall of the slot, and a second outer sealing ring fixedly installed on the outer side wall of the insert ring and cooperating with the first outer sealing ring.

6. The plug-in installation casing head for deep-sea oil drilling according to claim 5, characterized in that: The monitoring component includes a detection cavity opened in the slot, the detection cavity is located between the first inner sealing ring and the first outer sealing ring, and a humidity sensor is arranged in the detection cavity.

7. The plug-in installation type casing head for deep-sea oil drilling according to claim 3, characterized in that: Magnetic strips are fixedly mounted on opposite ends of the two sets of drive frames.

Images