CN212614634U - High temperature and high pressure resistant metal sealing device for oil extraction well head - Google Patents
High temperature and high pressure resistant metal sealing device for oil extraction well head Download PDFInfo
- Publication number
- CN212614634U CN212614634U CN202020750412.8U CN202020750412U CN212614634U CN 212614634 U CN212614634 U CN 212614634U CN 202020750412 U CN202020750412 U CN 202020750412U CN 212614634 U CN212614634 U CN 212614634U
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- Prior art keywords
- valve pipe
- oil
- pipe
- valve
- sealing
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 68
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 238000000605 extraction Methods 0.000 title claims description 10
- 239000003921 oil Substances 0.000 claims abstract description 52
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 53
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims 1
- 239000010779 crude oil Substances 0.000 abstract description 23
- 238000005553 drilling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a high temperature and high pressure resistant oil recovery metal seal device for well head relates to well head sealing device technical field, if well head sealing device for solving among the prior art is in the sealed state of closing for a long time, inside crude oil pressure is increase just not continuous, when opening the valve, the oil pressure of collecting together can lead to valve port department to appear cracked problem. The wellhead sealing device main part includes the sealing valve pipe and subtracts the valve pipe, and the sealing valve pipe passes through flange joint with subtracting the valve pipe, the top of sealing valve pipe is provided with the speed reducer subassembly, and the speed reducer subassembly passes through flange joint with the sealing valve pipe, the top of speed reducer subassembly is provided with driving motor, and driving motor passes through the transfer line with the speed reducer subassembly and is connected, the below that subtracts the valve pipe is provided with the well head pipeline, and the well head pipeline passes through flange joint with subtracting the valve pipe, the inside of sealing valve pipe is provided with forwards the chamber.
Description
Technical Field
The utility model relates to a well head sealing device technical field specifically is a metal sealing device for high temperature and high pressure resistant oil recovery well head.
Background
An oil well is a borehole drilled by a drilling method. After drilling oil layer, the oil layer casing is set, and the cement is injected into the annular space between casing and well wall to maintain well wall and seal oil, gas and water layer.
However, if the existing wellhead sealing device is in a sealing closed state for a long time, the pressure of the crude oil inside the wellhead sealing device is not continuously increased, and when a valve is opened, the accumulated oil pressure may cause the valve port to be broken; therefore, the existing requirements are not met, and the metal sealing device for the oil extraction wellhead resistant to high temperature and high pressure is provided for the requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature and high pressure resistant oil recovery metal seal device for well head to if the well head sealing device who provides in solving above-mentioned background art is in sealed state of closing for a long time, inside crude oil pressure is increase just not continuous, when opening the valve, the oil pressure of collecting together can lead to valve port department to appear cracked problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature and high pressure resistant oil recovery metal seal device for well head, includes well head sealing device main part, well head sealing device main part includes the sealing valve pipe and subtracts the valve pipe, and the sealing valve pipe passes through flange joint with subtracting the valve pipe, the top of sealing valve pipe is provided with the speed reducer subassembly, and the speed reducer subassembly passes through flange joint with the sealing valve pipe, the top of speed reducer subassembly is provided with driving motor, and driving motor passes through the transfer line with the speed reducer subassembly and is connected, the below that subtracts the valve pipe is provided with the well head pipeline, and the well head pipeline passes through flange joint with subtracting the valve pipe, the inside of sealing valve pipe is provided with forwards the chamber, the inside that subtracts the valve pipe is provided with the oil storage chamber, and forwards the chamber diameter and be greater than the oil storage chamber.
Preferably, the outside of sealing valve pipe all is provided with the output mouth of pipe, and the output mouth of pipe has four, the orificial outside of output is provided with oil pipeline, and oil pipeline passes through flange joint with the output mouth of pipe, oil pipeline's surface is provided with the oil delivery control valve.
Preferably, the inside of transmitting the chamber is provided with the transmission lead screw, and the transmission lead screw rotates with the speed reducer subassembly to be connected, the below of transmission lead screw is provided with the piston, and piston outer lane diameter is the same with oil storage chamber diameter.
Preferably, the top of the piston is provided with a fixed bearing, the fixed bearing is connected with the piston through a clamping groove, and the piston is rotatably connected with the transmission screw rod through the fixed bearing.
Preferably, hydraulic oil valve members are arranged on two sides of the flow reducing valve pipe and connected with the flow reducing valve pipe through flanges.
Preferably, the outer side of the hydraulic oil valve is provided with a telescopic push rod, and the telescopic push rod is rotatably connected with the hydraulic oil valve through an internal thread.
Preferably, a hydraulic oil cavity is formed in the hydraulic oil valve, a circular valve block is arranged in the hydraulic oil cavity and is connected with the telescopic push rod in a welded mode, and an expansion sealing core is arranged on the other side of the hydraulic oil cavity and is connected with the flow reducing valve pipe through a clamping groove.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses an inside of sealing valve pipe is provided with a set of transmission lead screw, and the transmission lead screw is driven by the motor, is provided with a piston below the transmission lead screw, changes piston outer lane diameter and oil storage chamber diameter the same, and after the piston was pushed into the oil storage chamber of below by the transmission lead screw, crude oil just can't flow into and transmit the chamber, only when the piston leaves the oil storage chamber, crude oil can enter;
2. the utility model discloses a subtract and flow valve outside of tubes side and be provided with two sets of hydraulic oil valve spare, and the inside of hydraulic oil valve spare is provided with the hydraulic oil cavity, a certain amount of hydraulic oil is stored in the inside of hydraulic oil cavity, be provided with flexible push rod outside hydraulic oil valve spare, rotate through the internal thread between flexible push rod and the hydraulic oil valve spare and be connected, when flexible push rod inwards promotes, the circular valve piece will be with the opposite side propelling movement of hydraulic oil toward the hydraulic oil cavity, and along with the removal of hydraulic oil, the inflation seal core that is located subtract and flows the valve pipe inboard will be to intraductal expansion, at this moment, the flow diameter that subtracts and flow the valve pipe will reduce, thereby control the flow velocity of crude oil, avoid opening.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;
fig. 3 is an enlarged structural diagram a of the present invention.
In the figure: 1. a wellhead sealing device body; 2. sealing the valve tube; 3. a drive motor; 4. a reducer assembly; 5. an output nozzle; 6. an oil pipeline; 7. an oil delivery control valve; 8. a flow reducing valve tube; 9. a wellhead piping; 10. a hydraulic oil valve; 11. a transmission screw rod; 12. fixing the bearing; 13. a piston; 14. an oil storage chamber; 15. a transfer chamber; 16. expanding the sealing core; 17. a hydraulic oil chamber; 18. a telescopic push rod; 19. a circular valve block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the present invention provides an embodiment: a metal sealing device for a high-temperature and high-pressure resistant oil extraction well mouth comprises a well mouth sealing device main body 1, wherein the well mouth sealing device main body 1 comprises a sealing valve pipe 2 and a flow reducing valve pipe 8, the sealing valve pipe 2 is connected with the flow reducing valve pipe 8 through a flange, the sealing valve pipe 2 is used for transferring crude oil, when the device is in a closed state, the inside of the sealing valve pipe 2 cannot contain crude oil, and the device is also in a relatively sealed environment, the flow reducing valve pipe 8 can perform flow limiting operation on the flowing crude oil to prevent the excessive crude oil from flowing into the sealing valve pipe 2 above, a speed reducer assembly 4 is arranged above the sealing valve pipe 2, the speed reducer assembly 4 is connected with the sealing valve pipe 2 through a flange, a driving motor 3 is arranged above the speed reducer assembly 4, the driving motor 3 is connected with the speed reducer assembly 4 through a transmission rod, and automatic control is realized through the driving of the motor, subtract and flow valve pipe 8's below is provided with well head pipeline 9, well head pipeline 9 is the top of installing at the exploitation well head, it is fixed that the convenience is connected well head and corresponding device, and well head pipeline 9 and subtract and flow valve pipe 8 pass through flange joint, guarantee leakproofness, the inside of sealing valve pipe 2 is provided with forwards chamber 15, the inside that subtracts flow valve pipe 8 is provided with oil storage chamber 14, and forwards 15 diameters in chamber and be greater than oil storage chamber 14, crude oil in the storage well.
Further, the outer side of the sealing valve pipe 2 is provided with four output pipe orifices 5, the outer side of each output pipe orifice 5 is provided with an oil conveying pipeline 6, the oil conveying pipelines 6 are connected with the output pipe orifices 5 through flanges, and the outer surfaces of the oil conveying pipelines 6 are provided with oil conveying control valves 7 to realize the conveying operation of crude oil.
Further, a transmission screw rod 11 is arranged inside the transfer cavity 15, the transmission screw rod 11 is rotatably connected with the speed reducer assembly 4, a piston 13 is arranged below the transmission screw rod 11, the diameter of the outer ring of the piston 13 is the same as that of the oil storage cavity 14, when the piston 13 is pushed into the oil storage cavity 14 below by the transmission screw rod 11, crude oil cannot flow into the transfer cavity 15, and only when the piston 13 leaves the oil storage cavity 14, crude oil can enter.
Further, a fixed bearing 12 is arranged at the top of the piston 13, the fixed bearing 12 is connected with the piston 13 through a clamping groove, the piston 13 is rotatably connected with the transmission screw rod 11 through the fixed bearing 12, and the relative movement of the piston 13 and the transmission screw rod 11 is realized through the fixed bearing 12.
Further, hydraulic oil valve members 10 are arranged on two sides of the flow reducing valve pipe 8, the hydraulic oil valve members 10 are connected with the flow reducing valve pipe 8 through flanges, and the flow rate of crude oil inside the flow reducing valve pipe 8 can be controlled through the hydraulic oil valve members 10.
Further, the outside of hydraulic oil valve member 10 is provided with flexible push rod 18, and flexible push rod 18 passes through the internal thread with hydraulic oil valve member 10 and is connected with, and flexible push rod 18 can be through the mode of pivoted adjusting in the valve member is inside.
Further, a hydraulic oil cavity 17 is arranged inside the hydraulic oil valve 10, a certain amount of hydraulic oil is stored inside the hydraulic oil cavity 17, a circular valve block 19 is arranged inside the hydraulic oil cavity 17, the circular valve block 19 is connected with a telescopic push rod 18 in a welded mode, an expansion sealing core 16 is arranged on the other side of the hydraulic oil cavity 17, the expansion sealing core 16 is connected with the flow reducing valve pipe 8 through a clamping groove, when the telescopic push rod 18 pushes the hydraulic oil inwards, the circular valve block 19 pushes the hydraulic oil towards the other side of the hydraulic oil cavity 17, the expansion sealing core 16 located on the inner side of the flow reducing valve pipe 8 expands towards the inside of the pipe along with the movement of the hydraulic oil, the flowing diameter of the flow reducing valve pipe 8 is reduced, the flowing speed of crude oil is controlled, and the situation that the valve is damaged due to overlarge pressure of the.
The working principle is as follows: when in use, the wellhead sealing device main body 1 is arranged above an oil production well, the wellhead sealing device main body 1 mainly comprises a sealing valve pipe 2 and a flow reducing valve pipe 8, the sealing valve pipe 2 is used for transferring crude oil, a transmission screw rod 11 driven by a motor is arranged in the wellhead sealing device main body, a piston 13 is arranged below the transmission screw rod 11, the crude oil cannot flow into a transfer cavity 15 after the piston 13 is pushed into an oil storage cavity 14 below by the transmission screw rod 11, when the device is in a closed state, the crude oil cannot exist in the sealing valve pipe 2 and is also in a relatively sealed environment, the crude oil can enter only when the piston 13 leaves the oil storage cavity 14, the flow reducing valve pipe 8 can perform flow limiting operation on the flowing crude oil, hydraulic oil valve pieces 10 are arranged on two sides of the flow reducing valve pipe 8, and a telescopic push rod 18 is arranged on the outer sides of the hydraulic oil valve pieces 10, the hydraulic oil cavity 17 is formed in the hydraulic oil valve 10, a certain amount of hydraulic oil is stored in the hydraulic oil cavity 17, when the telescopic push rod 18 pushes inwards, the circular valve block 19 in the hydraulic oil cavity 17 pushes the hydraulic oil to the other side of the hydraulic oil cavity 17, the expansion sealing core 16 on the inner side of the flow reducing valve pipe 8 expands towards the inside of the pipe along with the movement of the hydraulic oil, the flowing diameter of the flow reducing valve pipe 8 is reduced, the flowing speed of crude oil is controlled, and the valve is prevented from being damaged due to the fact that the valve is opened after being closed for a long time and the pressure of the crude oil is too high.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a high temperature and high pressure resistant oil recovery metal seal device for well head, includes well head sealing device main part (1), its characterized in that: the wellhead sealing device main body (1) comprises a sealing valve pipe (2) and a flow reducing valve pipe (8), the sealing valve pipe (2) is connected with the flow reducing valve pipe (8) through a flange, a speed reducer component (4) is arranged above the sealing valve pipe (2), the speed reducer component (4) is connected with the sealing valve pipe (2) through a flange, a driving motor (3) is arranged above the speed reducer component (4), and the driving motor (3) is connected with the speed reducer component (4) through a transmission rod, a wellhead pipeline (9) is arranged below the flow reducing valve pipe (8), and the wellhead pipeline (9) is connected with the flow reducing valve pipe (8) through a flange, a transfer cavity (15) is arranged inside the sealing valve pipe (2), an oil storage cavity (14) is formed in the flow reducing valve pipe (8), and the diameter of the transfer cavity (15) is larger than that of the oil storage cavity (14).
2. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 1, wherein: the outside of sealing valve pipe (2) all is provided with output mouth of pipe (5), and output mouth of pipe (5) has four, the outside of output mouth of pipe (5) is provided with oil pipeline (6), and oil pipeline (6) pass through flange joint with output mouth of pipe (5), the surface of oil pipeline (6) is provided with oil delivery control valve (7).
3. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 1, wherein: the transmission cavity (15) is internally provided with a transmission screw rod (11), the transmission screw rod (11) is rotatably connected with the speed reducer assembly (4), a piston (13) is arranged below the transmission screw rod (11), and the diameter of the outer ring of the piston (13) is the same as that of the oil storage cavity (14).
4. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 3, wherein: the top of piston (13) is provided with fixing bearing (12), and fixing bearing (12) are connected through the draw-in groove with piston (13), piston (13) are connected with transmission lead screw (11) rotation through fixing bearing (12).
5. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 1, wherein: and hydraulic oil valve pieces (10) are arranged on two sides of the flow reducing valve pipe (8), and the hydraulic oil valve pieces (10) are connected with the flow reducing valve pipe (8) through flanges.
6. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 5, wherein: the outer side of the hydraulic oil valve piece (10) is provided with a telescopic push rod (18), and the telescopic push rod (18) is rotatably connected with the hydraulic oil valve piece (10) through internal threads.
7. The metal sealing device for the high-temperature and high-pressure resistant oil extraction wellhead as claimed in claim 6, wherein: the hydraulic oil valve is characterized in that a hydraulic oil cavity (17) is formed in the hydraulic oil valve (10), a circular valve block (19) is arranged in the hydraulic oil cavity (17), the circular valve block (19) is connected with a telescopic push rod (18) in a welding mode, an expansion sealing core (16) is arranged on the other side of the hydraulic oil cavity (17), and the expansion sealing core (16) is connected with a flow reducing valve pipe (8) through a clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020750412.8U CN212614634U (en) | 2020-05-09 | 2020-05-09 | High temperature and high pressure resistant metal sealing device for oil extraction well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020750412.8U CN212614634U (en) | 2020-05-09 | 2020-05-09 | High temperature and high pressure resistant metal sealing device for oil extraction well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212614634U true CN212614634U (en) | 2021-02-26 |
Family
ID=74726774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020750412.8U Expired - Fee Related CN212614634U (en) | 2020-05-09 | 2020-05-09 | High temperature and high pressure resistant metal sealing device for oil extraction well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212614634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187435A (en) * | 2021-04-15 | 2021-07-30 | 西派集团有限公司 | Subsea tree control valve |
-
2020
- 2020-05-09 CN CN202020750412.8U patent/CN212614634U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187435A (en) * | 2021-04-15 | 2021-07-30 | 西派集团有限公司 | Subsea tree control valve |
| CN113187435B (en) * | 2021-04-15 | 2022-09-27 | 西派集团有限公司 | Subsea tree control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |