A wellhead apparatus comprising a radial lock device and control system for an oil and gas production wellhead casing head and tubing

Abstract

The application discloses a wellhead device of a radial locking device and a control system of an oil and gas production wellhead casing head and a pipeline, which comprises an oil and gas pipeline assembly and a flow direction control system, a load bearing filling part is arranged on the upper portion of the oil and gas pipeline assembly in a sleeved mode, an outer locking mechanism is arranged on the inner side of the load bearing filling part in a penetrating sleeving mode, and an inner locking part is arranged in the load bearing filling part in a sleeved mode. The device is mainly characterized in that a magnetic material bin is arranged in the inner portion of the inner connecting shell body to arrange magnetic fluid, the magnetic fluid is input into the magnetic sleeve rubber ring on the outer side of the inner connecting shell body through a valve port, a plug body and a pressure expansion rod under the action of the outer magnetic force, the magnetic sleeve rubber ring is relatively soft in structure with the magnetic fluid, the magnetic sleeve rubber ring can effectively adapt to the inner wall of the pipe body, and the influence of the poor sealing performance caused by the quality deformation is avoided.

Description

Technical Field

[0001] This invention relates to the field of rubber processing technology, and in particular to a wellhead device comprising a radial locking device and a control system for an oil and gas wellhead casing head and pipeline. Background Technology

[0002] A casing head is used to fix the wellhead of the drilled well, connect the wellhead casing string, support the weight of the technical casing and the oil layer casing, seal the annular space between each layer of casing, provide a transition connection for installing blowout preventers, tubing heads, and Christmas trees, and through two side ports on the casing head body, construction operations such as mud filling, monitoring, and adding balancing fluid can be performed. Casing heads are generally made of 35 or 42 chromium-molybdenum alloy structural steel. A casing hanger is also installed inside the casing head to suspend the casing string of the corresponding specification and seal the annular space gap. The blowout preventer assembly is installed on it. After the oil well is completed, the Christmas tree is installed on the casing head. When drilling on land or at sea, it is a special short joint that is connected to the top of the casing string by threads or flanges and sits on the outer casing in order to support and fix the casing string that has been lowered into the well, install the blowout preventer assembly and other wellhead devices.

[0003] A wellhead device, including a radial locking device and control system for an oil / gas wellhead casing head and pipeline, is described in application number CN202420317569.X. This device comprises: a casing head body, a mandrel-type casing hanger, and a metal sealing assembly. The casing head body is coaxially fitted outside the mandrel-type casing hanger. The mandrel-type casing hanger includes a first connecting part, a second connecting part, and a third connecting part, which are sequentially connected and interconnected. The first connecting part extends out of the casing head body and connects to the tubing head. The second connecting part is located within the casing head body and is sealed to the casing head body via the metal sealing assembly, which uses a combination of metal and rubber sealing. The third connecting part is threaded to the production casing. The outer diameter of the first connecting part is larger than the outer diameter of the production casing connected to the third connecting part. This utility model adopts a spindle-type casing hanger, the dimensions of which can be customized according to the actual casing and tubing head, adapting to casings of different sizes and achieving a sealed connection with the tubing head, reducing spare parts costs and disassembly and assembly workload; however, in the above technologies, the rubber sealing ring is a relatively hard product, which will become brittle after long-term use, resulting in poor sealing performance and difficulty in filling the sealing area of ​​the equipment. Therefore, we propose a wellhead device that includes a radial locking device and control system for oil and gas wellhead casing head and pipeline to solve the above problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a wellhead device comprising a radial locking device and a control system for an oil / gas wellhead casing and pipeline. This wellhead device primarily utilizes a magnetic material chamber within the inner casing to store magnetic fluid. Through the action of an external magnetic force, the magnetic fluid, under pressure, opens the valve, plug, and pressurized telescopic rod, inputting it into a magnetic sleeve ring on the outer side of the inner casing. Because the magnetic sleeve ring and magnetic fluid are relatively flexible, the magnetic sleeve ring can effectively conform to the inner wall of the casing, thus avoiding deformation that could lead to poor sealing.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wellhead device comprising a radial locking device and a control system for an oil and gas wellhead casing head and pipelines, includes an oil and gas pipeline assembly and a flow control system component. A load-bearing filling component is provided above the oil and gas pipeline assembly, and an external locking mechanism is provided on the inner side of the load-bearing filling component. An internal locking component is provided inside the load-bearing filling component, and a flow control system component is provided at the output end of the load-bearing filling component.

[0007] As a further technical solution, the oil and gas pipeline assembly includes a pad, a shock-absorbing base frame, a through base block, a mounting plate, a bolt ring seat, oil and gas pipe fittings, an external threaded seat and an internal threaded seat. The shock-absorbing base frame is bolted above the pad, and the through base block is provided on the top side of the shock-absorbing base frame. The mounting plate is provided above the through base block.

[0008] As a further technical solution, a bolt ring seat for bolt connection is provided on the inner side of the through block, and an oil and gas pipe fitting is provided on the inner side of the bolt ring seat. An external threaded seat is provided on the outer side of one end of the oil and gas pipe fitting, and an internal threaded seat is provided on the inner side of one end of the oil and gas pipe fitting.

[0009] As a further technical solution, the load-bearing filling component includes a bracket plate, an outer sealing ring, an inner sealing ring, a thick flange, hexagonal bolts, a sleeve shell, an inner convex ring shell, a side flange head, a filling valve block, a sealing flange head, a measuring sleeve flange head, a pressure rod, a pressure block, and a pressure gauge. The bracket plate is positioned above the mounting plate, and an outer sealing ring is positioned above the inner end of the bracket plate. An inner sealing ring is positioned above the outer sealing ring. A thick flange is positioned above the side of the bracket plate, and hexagonal bolts are positioned above the thick flange. A sleeve shell is positioned above the middle of the thick flange, and inner convex ring shells are positioned on the inner sides of both ends of the sleeve shell.

[0010] As a further technical solution, a lateral flange head is provided on one side of the casing, and a filling valve block is provided at one end of the lateral flange head, and a sealing flange head is provided at one end of the filling valve block. A test sleeve flange head is provided on the other side of the casing, and a pressure-bearing rod is provided inside the test sleeve flange head. A pressure-bearing block is provided at one end of the pressure-bearing rod, and a pressure gauge is provided on the outer side of one end of the test sleeve flange head.

[0011] As a further technical solution, the external locking mechanism includes a sealing sleeve, an external threaded rod, an external nut, a splined bushing, a shaft seal base, a threaded sleeve, a tapered plug, a tapered socket, a locking ring, a double set of rubber rings, and a grooved threaded sleeve. The sealing sleeve is sleeved and connected to the inner side of the thick flange. An external threaded rod is provided on the outer side of the sealing sleeve, and a threaded external nut is provided on the outer side of the external threaded rod. A splined bushing is provided on the inner side of the sealing sleeve, and a shaft seal base is provided at one end of the splined bushing. A threaded sleeve is provided at one end of the shaft seal base, and a tapered plug is provided at one end of the threaded sleeve.

[0012] As a further technical solution, the inner end of the cone plug is connected to a cone socket, and a locking ring is provided on the inner side of the cone socket. The inner side of the locking ring is provided with a double set of rubber rings, and the inner side of the double set of rubber rings is provided with a grooved threaded sleeve.

[0013] As a further technical solution, the inner locking component includes an inner connecting shell, an inner rubber ring, a threaded rubber ring head, a magnetic material chamber, a connecting pipe, a valve port, a plug, a pressure-bearing telescopic rod, and a magnetic sleeve rubber ring. The inner connecting shell is disposed inside the sleeve body. An inner rubber ring is disposed on the inner side of the inner connecting shell. Threaded rubber ring heads are disposed at both ends of the inner connecting shell. A magnetic material chamber is disposed inside the inner connecting shell, and connecting pipes are disposed at both ends of the magnetic material chamber. A valve port is disposed inside the connecting pipe, and a plug is disposed on one side of the valve port. A pressure-bearing telescopic rod is disposed on one side of the plug. A magnetic sleeve rubber ring is disposed at one end of the connecting pipe.

[0014] As a further technical solution, the flow control system includes an upper pipe shell, a lower valve pipe, a middle connecting valve body, a node compartment, an ejector valve pipe, an upper valve pipe, and an upper end valve pipe. The upper pipe shell is sleeved and connected above the thick flange. A bolted lower valve pipe is provided on the side of the upper pipe shell. A sleeved middle connecting valve body is provided above the upper pipe shell. A node compartment is provided above the middle connecting valve body. An ejector valve pipe is provided above the node compartment. Bolted upper valve pipes are provided on both sides of the node compartment. An upper end valve pipe is provided at one end of the upper valve pipe.

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

[0016] The invention mainly utilizes a magnetic material chamber inside the inner casing to contain the magnetic fluid. Through the action of external magnetic force, the magnetic fluid is forced to open the valve port, plug, and pressurized telescopic rod under certain pressure and input into the magnetic sleeve ring on the outer side of the inner casing. Because the magnetic sleeve ring and the magnetic fluid are relatively flexible, the magnetic sleeve ring can effectively achieve an adaptive fit with the inner wall of the tube, thereby avoiding the effect of deformation and poor sealing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a wellhead device that includes a radial locking device and a control system for oil and gas production wellhead casing head and pipeline.

[0018] Figure 2 This is a schematic diagram of the structure viewed from below in this invention;

[0019] Figure 3 This is a schematic diagram of the structure of the load-bearing filling component in this invention;

[0020] Figure 4 This is a schematic diagram of the external locking mechanism in this invention;

[0021] Figure 5 This is a schematic diagram of the structure of the double-set rubber rings and grooved screw rings in this invention;

[0022] Figure 6 This is a schematic diagram of the structure of the external locking component in this invention.

[0023] In the diagram: 1. Oil and gas pipeline assembly; 101. Gasket; 102. Vibration damping frame; 103. Through block; 104. Mounting plate; 105. Bolt ring seat; 106. Oil and gas pipe fitting; 107. External threaded seat; 108. Internal threaded seat; 2. Load-bearing filling component; 201. Bracket plate; 202. External sealing ring; 203. Internal sealing ring; 204. Thick flange; 205. Hex bolt; 206. Sleeve body; 207. Internal convex ring shell; 208. Side flange; 209. Filling valve block; 2010. Sealing flange; 2011. Test sleeve flange; 2012. Pressure rod; 2013. Pressure block; 2014. Pressure gauge; 3. External locking mechanism; 301. Sealing chamber; 30 2. External screw; 303. External nut; 304. Splined bushing; 305. Shaft seal base; 306. Threaded sleeve; 307. Conical plug; 308. Conical socket; 309. Locking ring; 3010. Double set of rubber rings; 3011. Grooved threaded sleeve; 4. Internal locking components; 401. Inner connecting housing; 402. Inner rubber ring; 403. Threaded rubber ring head; 404. Magnetic hopper; 405. Connecting pipe; 406. Valve port; 407. Plug; 408. Pressure-bearing telescopic rod; 409. Magnetic sleeve rubber ring; 5. Flow control system components; 501. Upper pipe housing; 502. Lower valve pipe; 503. Middle connecting valve body; 504. Node compartment; 505. Ejection valve pipe; 506. Upper valve pipe; 507. Upper valve pipe. Detailed Implementation

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-6 In this embodiment of the invention, a wellhead device comprising a radial locking device and a control system for an oil and gas wellhead casing head and pipelines includes an oil and gas pipeline assembly 1 and a flow control system component 5. A load-bearing filling component 2 is provided above the oil and gas pipeline assembly 1, and an external locking mechanism 3 is provided on the inner side of the load-bearing filling component 2. An internal locking component 4 is provided inside the load-bearing filling component 2, and a flow control system component 5 is provided at the output end of the load-bearing filling component 2.

[0028] The oil and gas pipeline assembly 1 includes a pad 101, a shock-absorbing base 102, a through base 103, a mounting plate 104, a bolt ring seat 105, an oil and gas pipeline fitting 106, an external threaded seat 107, and an internal threaded seat 108. The shock-absorbing base 102, which is bolted, is provided above the pad 101, and the through base 103 is provided on the top side of the shock-absorbing base 102. The mounting plate 104 is provided above the through base 103.

[0029] In an embodiment of the present invention, when in use, the pad 101 is inserted through the oil and gas pipe 106 and then fitted, so that the pad 101 is tightly placed above the location. The shock-absorbing base 102 is used to support the penetrating base 103 to achieve effective support. After processing, the mounting plate 104 provides sealed support for the load-bearing filling component 2.

[0030] A bolt ring seat 105 for bolt connection is provided on the inner side of the base block 103, and an oil and gas pipe fitting 106 is provided on the inner side of the bolt ring seat 105. An external threaded seat 107 is provided on the outer side of one end of the oil and gas pipe fitting 106, and an internal threaded seat 108 is provided on the inner side of one end of the oil and gas pipe fitting 106.

[0031] In the embodiments of the present invention, the oil and gas pipe fitting 106 is bolted onto the inner side of the penetrating base block 103 and the mounting plate 104 by means of bolt ring seat 105 to achieve the effect of sleeve assembly, and the external thread seat 107 and internal thread seat 108 on both sides of one end of the oil and gas pipe fitting 106 can cooperate with the external locking mechanism 3 and the internal locking component 4 to achieve the effect of threaded sleeve.

[0032] The load-bearing filling component 2 includes a bracket plate 201, an outer sealing ring 202, an inner sealing ring 203, a thick flange plate 204, hex bolts 205, a sleeve shell 206, an inner convex ring shell 207, a side flange head 208, a filling valve block 209, a sealing flange head 2010, a measuring sleeve flange head 2011, a pressure rod 2012, a pressure block 2013, and a pressure gauge 2014. The bracket plate 201 is positioned above the mounting plate 104, and an outer sealing ring 202 is positioned above the inner end of the bracket plate 201. An inner sealing ring 203 is positioned above the outer sealing ring 202. A thick flange plate 204 is positioned above the side of the bracket plate 201, and hex bolts 205 are positioned above the thick flange plate 204. A sleeve shell 206 is positioned above the middle part of the thick flange plate 204, and inner convex ring shells 207 are positioned on the inner sides of both ends of the sleeve shell 206.

[0033] In an embodiment of the present invention, when assembly is required, the outer sealing ring 202 and the inner sealing ring 203 are inserted into the upper middle part of the bracket plate 201, so that the upper part of the outer sealing ring 202 and the inner sealing ring 203 are tightly connected with the thick flange plate 204, and the thick flange plate 204 is effectively bolted together with the hexagonal bolts 205, so that the sleeve shell 206 can be sleeved and installed on the oil and gas pipe fitting 106.

[0034] A lateral flange 208 is provided on one side of the casing 206, and a filling valve block 209 is provided at one end of the lateral flange 208. A sealing flange 2010 is provided at one end of the filling valve block 209. A test flange 2011 is provided on the other side of the casing 206, and a pressure rod 2012 is provided inside the test flange 2011. A pressure block 2013 is provided at one end of the pressure rod 2012, and a pressure gauge 2014 is provided on the outside of one end of the test flange 2011.

[0035] In an embodiment of the present invention, when the device is locked, the cooperation of the side flange head 208, the filling valve block 209, and the sealing flange head 2010 fills the inside of the device with material. Combined with the joint action of the test sleeve flange head 2011, the pressure rod 2012, and the pressure block 2013, the pressure gauge 2014 can detect the pressure inside the device in real time.

[0036] The external locking mechanism 3 includes a sealing sleeve 301, an external screw 302, an external nut 303, a splined bushing 304, a shaft seal base 305, a threaded sleeve 306, a tapered plug 307, a tapered socket 308, a locking ring 309, a double set of rubber rings 3010, and a grooved threaded sleeve 3011. The sealing sleeve 301 is sleeved and connected to the inner side of the thick flange 204. The outer side of the sealing sleeve 301 is provided with an external screw 302, and the outer side of the external screw 302 is provided with a threaded external nut 303. The inner side of the sealing sleeve 301 is provided with a splined bushing 304, and one end of the splined bushing 304 is provided with a shaft seal base 305. One end of the shaft seal base 305 is provided with a threaded sleeve 306, and one end of the threaded sleeve 306 is provided with a tapered plug 307.

[0037] In an embodiment of the present invention, the external screw 302 at one end of the sealing sleeve 301 is then used for adjustment. After adjustment, the force is input to the spline bushing 304. The spline bushing 304 and the shaft seal base 305 work together to input the force to the threaded sleeve 306. After the threaded sleeve 306 extends and retracts, the conical plug 307 at one end of the threaded sleeve 306 is inserted into the conical socket 308. After the conical plug 307 and the conical socket 308 are joined, the locking ring 309 achieves a firm locking effect.

[0038] The inner end of the cone plug 307 is connected to the cone socket 308, and the inner end of the cone socket 308 is provided with a locking ring 309. The inner side of the locking ring 309 is provided with a double set of rubber rings 3010, and the inner side of the double set of rubber rings 3010 is provided with a grooved screw ring 3011.

[0039] In embodiments of the present invention, when locking is required, a double set of rubber rings 3010 are used in conjunction with a locking ring 309 to tightly fit the grooved threaded ring 3011 in a ring, so that the assembly of the grooved threaded ring 3011 is threadedly connected to the external threaded seat 107 on the oil and gas pipe fitting 106 to achieve a tight connection effect.

[0040] The inner locking component 4 includes an inner connecting shell 401, an inner rubber ring 402, a threaded rubber ring head 403, a magnetic material chamber 404, a connecting pipe 405, a valve port 406, a plug body 407, a pressure-bearing telescopic rod 408, and a magnetic sleeve rubber ring 409. The inner connecting shell 401 is located inside the sleeve body shell 206. The inner rubber ring 402 is provided on the inner side of the inner connecting shell 401. The threaded rubber ring head 403 is provided at both ends of the inner connecting shell 401. The magnetic material chamber 404 is provided inside the inner connecting shell 401, and the connecting pipe 405 is provided at both ends of the magnetic material chamber 404. The valve port 406 is provided inside the connecting pipe 405, and the plug body 407 is provided on one side of the valve port 406. The pressure-bearing telescopic rod 408 is provided on one side of the plug body 407. The magnetic sleeve rubber ring 409 is provided at one end of the connecting pipe 405.

[0041] In an embodiment of the present invention, after external locking, the inner connecting shell 401 is used in conjunction with the inner rubber ring 402 and the threaded rubber ring head 403 to be threadedly connected to the inner threaded seat 108 on the oil and gas pipe fitting 106, so as to achieve a flexible threaded splicing effect. The attraction of the external magnetic force causes the magnetic fluid in the magnetic hopper 404 to flow through the opening of the connecting pipe 405, valve port 406, plug body 407 and pressure-bearing telescopic rod 408, so that the magnetic fluid is input into the magnetic sleeve rubber ring 409. Through flexible magnetic adhesion, the inner connecting shell 401 and the magnetic sleeve rubber ring 409 are firmly attached to the inside of the sleeve shell 206.

[0042] The flow control system component 5 includes an upper pipe shell 501, a lower valve pipe 502, a middle connecting valve body 503, a node compartment 504, an ejector valve pipe 505, an upper valve pipe 506, and an upper valve pipe 507. The upper pipe shell 501 is sleeved and connected to the upper part of the thick flange 204. The lower valve pipe 502 is bolted and sleeved on the side of the upper pipe shell 501. The middle connecting valve body 503 is sleeved and sleeved on the upper part of the upper pipe shell 501. The node compartment 504 is located above the middle connecting valve body 503. The ejector valve pipe 505 is located above the node compartment 504. The upper valve pipe 506 is bolted and sleeved on both sides of the node compartment 504. The upper valve pipe 507 is located at one end of the upper valve pipe 506.

[0043] In an embodiment of the present invention, after the device is locked in place, the lower valve pipe 502, the middle connecting valve body 503, the ejector valve pipe 505, the upper valve pipe 506, and the upper valve pipe 507 work together to output the flow direction as needed.

[0044] The working principle of this invention is as follows: In use, the gasket 101 is inserted through the oil and gas pipe fitting 106 and then fitted, so that the gasket 101 is tightly placed above the location. The shock-absorbing base frame 102 is used to support the through base block 103 for effective support. After processing, the mounting plate 104 provides sealed support for the load-bearing filling component 2. The oil and gas pipe fitting 106 is bolted to the inner side of the through base block 103 and the mounting plate 104 through the bolt ring seat 105 to achieve the effect of fitting and assembling. The external threaded seat 107 and internal threaded seat 108 on both sides of one end of the oil and gas pipe fitting 106 can cooperate with the external locking mechanism 3 and the internal locking component 4 to achieve the effect of threaded fitting. When assembly is required, the middle of the bracket plate 201 is used to support the oil and gas pipe fitting 106. The outer sealing ring 202 and the inner sealing ring 203 are inserted together, so that the upper part of the outer sealing ring 202 and the inner sealing ring 203 are tightly connected to the thick flange 204. The thick flange 204 is then effectively bolted together with the hexagonal bolts 205, so that the sleeve body 206 can be sleeved and installed on the oil and gas pipe fitting 106. When locking is required, the double set of rubber rings 3010 and the locking ring 309 are used to tightly fit the grooved threaded sleeve 3011 in a ring. The assembly of the grooved threaded sleeve 3011 is threaded into the external threaded seat 107 on the oil and gas pipe fitting 106 to achieve a tight connection. Then, the external thread 302 at one end of the sealing sleeve 301 is used for adjustment. After adjustment, the force is input to the splined bushing 30. 4. The splined bushing 304 and shaft seal base 305 work together to input force into the threaded sleeve 306. After the threaded sleeve 306 extends and retracts, the conical plug 307 at one end of the threaded sleeve 306 is inserted into the conical socket 308. This connection between the conical plug 307 and the conical socket 308 creates a secure locking effect on the locking ring 309. After external locking, the inner connecting shell 401, along with the inner rubber ring 402 and the threaded rubber ring head 403, is threaded onto the inner threaded seat 108 on the oil and gas pipe fitting 106, achieving a flexible threaded connection. The external magnetic attraction causes the magnetic fluid in the magnetic silo 404 to flow through the connecting pipe 405, valve port 406, plug 407, and pressure-bearing telescopic rod 408, allowing the magnetic fluid to... The input material is fed into the magnetic sleeve ring 409. Through flexible magnetic bonding, the inner connecting shell 401 and the magnetic sleeve ring 409 are firmly bonded to the inside of the sleeve shell 206. When the equipment is locked, the cooperation of the side flange head 208, the filling valve block 209, and the sealing flange head 2010 fills the inside of the equipment with material. With the combined action of the measuring sleeve flange head 2011, the pressure rod 2012, and the pressure block 2013, the pressure gauge 2014 can detect the pressure inside the equipment in real time. After the equipment is locked and connected, the cooperation of the lower valve pipe 502, the middle connecting valve body 503, the ejector valve pipe 505, the upper valve pipe 506, and the upper end valve pipe 507 allows for output operation in the required direction.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wellhead device comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, comprising an oil / gas pipeline assembly (1) and a flow direction control system component (5), characterized in that: The oil and gas pipeline assembly (1) is provided with a sleeved load-bearing filling component (2) above it, and the inner side of the load-bearing filling component (2) is provided with a through-sleeved outer locking mechanism (3), the inside of the load-bearing filling component (2) is provided with a sleeved inner locking component (4), and the output end of the load-bearing filling component (2) is provided with a bolted flow direction control system component (5). The oil and gas pipeline assembly (1) includes a pad (101), a shock-absorbing base frame (102), a through base block (103), a mounting plate (104), a bolt ring seat (105), an oil and gas pipeline fitting (106), an external threaded seat (107), and an internal threaded seat (108). The shock-absorbing base frame (102) connected by bolts is provided above the pad (101), and the through base block (103) is provided on the top side of the shock-absorbing base frame (102). The mounting plate (104) is provided above the through base block (103). The load-bearing filling component (2) includes a bracket plate (201), an outer sealing ring (202), an inner sealing ring (203), a thick flange plate (204), hex bolts (205), a sleeve body (206), an inner convex ring shell (207), a side flange head (208), a filling valve block (209), a sealing flange head (2010), a test sleeve flange head (2011), a pressure rod (2012), a pressure block (2013), and a pressure gauge (2014). The bracket plate (201) is disposed on the mounting plate (1). Above 04), and an outer sealing ring (202) is provided above the inner end of the bracket plate (201), an inner sealing ring (203) is provided above the outer sealing ring (202), a thick flange (204) is provided above the side of the bracket plate (201), and a hexagonal bolt (205) is provided above the thick flange (204), a sleeve shell (206) is provided above the middle part of the thick flange (204), and inner convex ring shells (207) are provided on the inner sides of both ends of the sleeve shell (206). The inner locking component (4) includes an inner connecting shell (401), an inner rubber ring (402), a threaded rubber ring head (403), a magnetic material bin (404), a connecting pipe (405), a valve port (406), a plug (407), a pressure-bearing telescopic rod (408), and a magnetic sleeve rubber ring (409). The inner connecting shell (401) is disposed inside the sleeve shell (206), and the inner side of the inner connecting shell (401) is provided with an inner rubber ring (402). The inner shell (401) is provided with threaded rubber ring heads (403) at both ends. A magnetic material hopper (404) is provided inside the inner shell (401). A connecting pipe (405) is provided at both ends of the magnetic material hopper (404). A valve port (406) is provided inside the connecting pipe (405). A plug body (407) is provided on one side of the valve port (406). A pressure-bearing telescopic rod (408) is provided on one side of the plug body (407). A magnetic sleeve rubber ring (409) is provided at one end of the connecting pipe (405).

2. A wellhead device according to claim 1, comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, characterized in that: The inner side of the through block (103) is provided with a bolt ring seat (105) for bolt connection, and the inner side of the bolt ring seat (105) is provided with an oil and gas pipe fitting (106). An external thread seat (107) is provided on the outer side of one end of the oil and gas pipe fitting (106), and an internal thread seat (108) is provided on the inner side of one end of the oil and gas pipe fitting (106).

3. A wellhead device according to claim 1, comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, characterized in that: A lateral flange head (208) is provided on one side of the casing (206), and a filling valve block (209) is provided at one end of the lateral flange head (208). A sealing flange head (2010) is provided at one end of the filling valve block (209). A test sleeve flange head (2011) is provided on the other side of the casing (206), and a pressure rod (2012) is provided inside the test sleeve flange head (2011). A pressure block (2013) is provided at one end of the pressure rod (2012), and a pressure gauge (2014) is provided on the outside of one end of the test sleeve flange head (2011).

4. A wellhead device according to claim 1, comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, characterized in that: The external locking mechanism (3) includes a sealing sleeve (301), an external screw (302), an external nut (303), a splined bushing (304), a shaft seal base (305), a threaded sleeve (306), a tapered plug (307), a tapered socket (308), a locking ring (309), a double set of rubber rings (3010), and a grooved threaded sleeve (3011). The sealing sleeve (301) is fitted onto the inner side of the thick flange (204). 01) is provided with an external screw (302) on its outer side, and an external nut (303) with threaded connection is provided on the outer side of the external screw (302). A spline bushing (304) is provided on the inner side of the sealing sleeve (301), and a shaft seal base (305) is provided at one end of the spline bushing (304). A threaded sleeve (306) is provided at one end of the shaft seal base (305), and a tapered plug (307) is provided at one end of the threaded sleeve (306).

5. A wellhead device comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, as described in claim 4, characterized in that: The inner end of the cone plug (307) is connected to a cone socket (308), and a locking ring (309) is provided on the inner end side of the cone socket (308). A double set of rubber rings (3010) is provided on the inner side of the locking ring (309), and a grooved screw ring (3011) is provided on the inner side of the double set of rubber rings (3010).

6. A wellhead device comprising a radial locking device and a control system for an oil / gas wellhead casing head and pipeline, as described in claim 1, characterized in that: The flow control system component (5) includes an upper pipe shell (501), a lower valve pipe (502), a middle connecting valve body (503), a node compartment (504), an ejector valve pipe (505), an upper valve pipe (506), and an upper valve pipe (507). The upper pipe shell (501) is sleeved and connected to the upper part of the thick flange (204). The lower valve pipe (502) is bolted and sleeved on the side of the upper pipe shell (501). The middle connecting valve body (503) is sleeved and connected above the upper pipe shell (501). The node compartment (504) is provided above the middle connecting valve body (503). The ejector valve pipe (505) is provided above the node compartment (504). The upper valve pipe (506) is bolted and sleeved on both sides of the node compartment (504). The upper valve pipe (507) is provided at one end of the upper valve pipe (506).

Images