CN114284789A - Wellhead sealing explosion-proof method and device - Google Patents
Wellhead sealing explosion-proof method and device Download PDFInfo
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- CN114284789A CN114284789A CN202111562294.3A CN202111562294A CN114284789A CN 114284789 A CN114284789 A CN 114284789A CN 202111562294 A CN202111562294 A CN 202111562294A CN 114284789 A CN114284789 A CN 114284789A
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- 238000007789 sealing Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004880 explosion Methods 0.000 claims abstract description 10
- 229920001973 fluoroelastomer Polymers 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 6
- 239000003129 oil well Substances 0.000 claims abstract description 5
- 230000002265 prevention Effects 0.000 claims abstract description 5
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 229920001971 elastomer Polymers 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a wellhead sealing explosion-proof method and a device, which provide a reliable fixed platform for a cable (1) through a transfer pipe (2) reliably connected with an oil well wellhead; the cable (1) is butted with an explosion-proof plug (20) through an explosion-proof socket (19) so as to improve the safety and reliability of explosion prevention of an aboveground power supply; meanwhile, a third sealing device consisting of an A sealing ring (7), a B sealing ring (8) and a C sealing ring (9) is arranged at the joint of the cable (1) to prevent the occurrence of oil-gas well mouth leakage accidents. The connector of the cable is completely sealed in the closed cavity formed by the adapter tube and the end cover through the adapter tube and the end cover, and the cable is reliably fixed; meanwhile, the air tightness of the device is improved through the sealing ring A, the sealing ring B and the sealing ring C which are made of special fluororubber materials with low air permeability, and three oil-gas sealing lines are formed to prevent the leakage accident of the wellhead of the oil-gas well. The invention has safe and reliable explosion-proof performance and meets the requirement of safe production.
Description
Technical Field
The invention relates to a wellhead sealing explosion-proof method and device, belonging to the technical field of well logging and well testing instruments.
Background
With the continuous deepening of oil field development, the real-time monitoring of underground formation parameters becomes more and more important, and at present, the oil field uses a direct-reading instrument to carry out the real-time monitoring of the underground formation parameters. One of the important components of direct reading instruments is the communication cable. The electrification, test action and data transmission of the downhole instrument are inseparable from the cable, so the fixation and sealing of the cable at the wellhead become key factors for determining the downhole success of the instrument. Especially in the production of high gas-containing wells and gas injection wells, the gas content is large, and the sealing and explosion prevention of well head cables are a great problem.
Disclosure of Invention
The invention aims to provide a wellhead sealing explosion-proof method and device to solve the problems of sealing and explosion-proof of wellhead cables in the production process of a high-gas-content well and a gas injection well, thereby overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a wellhead sealing explosion-proof method, which provides a reliable fixed platform for a cable through a transfer pipe which is reliably connected with an oil well wellhead; the cable is butted with the explosion-proof plug through the explosion-proof socket so as to improve the safety and reliability of explosion prevention of the aboveground power supply; meanwhile, a third sealing device consisting of an A sealing ring, a B sealing ring and a C sealing ring is arranged at the cable joint to prevent the occurrence of oil-gas well mouth leakage accidents.
In the wellhead sealing explosion-proof method, the sealing ring A, the sealing ring B and the sealing ring C are all O-shaped sealing rings made of special fluororubber materials with low air permeability.
The device formed according to the wellhead sealing explosion-proof method comprises a transfer pipe which is in threaded connection with an oil wellhead through oil pipe threads; a group of C sealing rings are arranged on the outer circle of the upper part of the adapter tube, a cable is arranged in the inner hole of the adapter tube, a compression screw, a sealing copper ball and a compression screw plug are sequentially sleeved outside the cable from bottom to top, and the compression screw is in threaded connection with the bottom opening of the compression screw plug; the power cord of cable is connected with explosion-proof socket through sealed stopper, and explosion-proof socket's earth connection is connected with binding post, and binding post is connected with the nut of screwing up through the earth screw.
In the device, the top end of the compression screw plug is in threaded connection with the sealing plug seat; the outer circle of the compression screw plug is provided with a group of sealing rings A, and the sealing rings A are located between the compression screw plug and the sealing plug seat.
In the device, a group of sealing rings B is arranged on the excircle of the sealing plug seat; the B sealing ring is positioned between the sealing plug seat and the adapter tube.
In the wellhead sealing explosion-proof device, the top of the adapter tube is provided with an end cover; the end cover is in threaded connection with the adapter tube, and a group of C sealing rings are arranged between the end cover and the adapter tube.
In the wellhead sealing explosion-proof device, an explosion-proof socket is installed at the top end of the adapter tube, a power line of the explosion-proof socket is connected with a core wire of a cable, and an explosion-proof plug is inserted into the explosion-proof socket.
In the wellhead sealing explosion-proof device, a rubber gasket is arranged between the explosion-proof socket and the end cover, and the explosion-proof socket and the end cover are fixed through screws.
Due to the adoption of the technical scheme, compared with the prior art, the connector of the cable is completely sealed in the sealed cavity formed by the adapter tube and the end cover through the adapter tube and the end cover, and the cable is reliably fixed; meanwhile, the air tightness of the device is improved through the sealing ring A, the sealing ring B and the sealing ring C which are made of special fluororubber materials with low air permeability, and three oil-gas sealing lines are formed to prevent the leakage accident of the wellhead of the oil-gas well. The invention has safe and reliable explosion-proof performance and meets the requirement of safe production.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The labels in the figures are: the anti-explosion plug comprises a cable 1, a switching tube 2, a compression screw 3, a copper ball 4, a compression screw plug 5, a rubber tail 6, a sealing ring 7-A, a sealing ring 8-B, a sealing ring 9-C, a sealing plug 10, a sealing plug seat 11, a nut 12, a grounding screw 13, a wiring terminal 14, a grounding wire 15, a power wire 16, an end cover 17, a rubber gasket 18, an anti-explosion socket 19 and an anti-explosion plug 20.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
According to the wellhead sealing explosion-proof method, as shown in figure 1, a reliable fixing platform is provided for a cable 1 through a transfer pipe 2 which is reliably connected with an oil wellhead; the cable 1 is butted with an explosion-proof plug 20 through an explosion-proof socket 19 so as to improve the safety and reliability of explosion prevention of the aboveground power supply; meanwhile, a third sealing device consisting of a sealing ring A7, a sealing ring B8 and a sealing ring C9 is arranged at the joint of the cable 1 to prevent the occurrence of the leakage accident of the wellhead of the oil and gas well. The sealing rings A, B, C and A7, B8 and C9 are all O-shaped sealing rings made of special fluororubber materials with low air permeability.
The device formed according to the wellhead sealing explosion-proof method comprises an adapter tube 2 which is connected with an oil wellhead through oil tube threads as shown in figure 1; a group of C-shaped sealing rings 9 are arranged on the outer circle of the upper part of the adapter tube 2, a cable 1 is arranged in an inner hole of the adapter tube 2, a compression screw 3, a sealing copper ball 4 and a compression screw plug 5 are sequentially sleeved outside the cable 1 from bottom to top, and the compression screw 3 is in threaded connection with the bottom opening of the compression screw plug 5; a power line 16 of the cable 1 is connected to an explosion-proof socket 19 through a sealing plug 10, a ground wire 15 of the explosion-proof socket 19 is connected to a terminal 14, and the terminal 14 is connected to a tightening nut 12 through a ground screw 13. The top end of the compression screw plug 5 is in threaded connection with the sealing plug seat 11; the excircle of the compaction screw plug 5 is provided with a group of A sealing rings 7, and the A sealing rings 7 are positioned between the compaction screw plug 5 and a sealing plug seat 11. A group of B sealing rings 8 are arranged on the excircle of the sealing plug seat 11; the B sealing ring 8 is positioned between the sealing plug seat 11 and the adapter tube 2. The top of the adapter tube 2 is provided with an end cover 17; the end cover 17 is in threaded connection with the adapter tube 2, and a group of C-shaped sealing rings 9 are arranged between the end cover 17 and the adapter tube 2. An explosion-proof socket 19 is arranged at the top end of the adapter tube 2, a power line 16 of the explosion-proof socket 19 is connected with a core wire of the cable 1, and an explosion-proof plug 20 is inserted into the explosion-proof socket 19. A rubber gasket 18 is arranged between the anti-explosion socket 19 and the end cover 17, and the anti-explosion socket 19 and the end cover 17 are fixed through screws.
In specific implementation, the cable 1 is connected with the underground instrument and mainly used for supplying power and communicating with the underground instrument. The front end of the adapter tube 2 is processed with oil tube threads which are matched with an oil well mouth to play a role in sealing. The cable 1 passes the 2 holes of switching pipe, installs switching pipe 2 at the well head, and cable 1 passes hold-down screw 3, sealed copper ball 4, compresses tightly plug screw 5, the 6 holes of rubber cement tail in proper order, and the welding of cable conductor is on metal jack, pushes away metal jack inside rubber cement tail. The sealing plug 10 is installed in the hole of the sealing plug seat 11, the A sealing ring 7 is installed in the sealing groove of the compression screw plug 5, the B sealing ring 8 is installed in the sealing groove of the sealing plug seat 11, the compression screw plug 5 is installed in the corresponding hole of the sealing plug seat 11, the sealing plug seat 11 is installed in the corresponding hole of the adapter tube 2, the nut 12 is installed in the corresponding hole of the adapter tube 2, and the sealing plug seat 11 is pressed and installed in place simultaneously in the process of screwing the nut 12. The C sealing ring 9 is arranged in the sealing groove of the adapter tube 2. The power supply wire 16 is welded to the sealing plug 10, the ground wire 15 is welded to the terminal 14, and the terminal 14 is fixed to the end surface of the adapter tube 2 using the ground screw 13. An end cover 17 is arranged on the adapter tube 2, and a grounding wire 15 and a power wire 16 sequentially pass through inner holes of the end cover 17 and the rubber gasket 18 and are arranged in corresponding jacks of the explosion-proof socket 19. The rubber gasket 18 and the explosion-proof socket 19 are fixed to the end cap 17 using screws. The explosion-proof plug 20 is butted with the explosion-proof socket 19 and is connected with an aboveground power supply.
The O-shaped ring materials used by the wellhead sealing explosion-proof device all use special fluororubber with low air permeability so as to improve the air tightness of the device. The wellhead sealing explosion-proof device can fix the cable on the wellhead, has good sealing performance, and can prevent the wellhead leakage accident of the oil and gas well. The well head sealing explosion-proof device is designed to be explosion-proof by combining the explosion-proof socket and the explosion-proof plug, has safe and reliable explosion-proof performance and meets the requirement of safe production.
Claims (8)
1. A wellhead sealing explosion-proof method is characterized in that: the method provides a reliable fixed platform for the cable (1) through the adapter tube (2) which is reliably connected with the wellhead of the oil well; the cable (1) is butted with an explosion-proof plug (20) through an explosion-proof socket (19) so as to improve the safety and reliability of explosion prevention of an aboveground power supply; meanwhile, a third sealing device consisting of an A sealing ring (7), a B sealing ring (8) and a C sealing ring (9) is arranged at the joint of the cable (1) to prevent the occurrence of oil-gas well mouth leakage accidents.
2. A wellhead seal explosion-proof method according to claim 1, characterized in that: the sealing ring A (7), the sealing ring B (8) and the sealing ring C (9) are all O-shaped sealing rings made of special fluororubber materials with low air permeability.
3. The device formed by the wellhead sealing explosion-proof method according to the claim 1 or 2, is characterized in that: the device comprises a transfer pipe (2) which is connected with the screw thread of the wellhead of the oil well through the screw thread of an oil pipe; a group of C sealing rings (9) are arranged on the outer circle of the upper part of the adapter tube (2), a cable (1) is arranged in an inner hole of the adapter tube (2), a compression screw (3), a sealing copper ball (4) and a compression screw plug (5) are sequentially sleeved outside the cable (1) from bottom to top, and the compression screw (3) is in threaded connection with the bottom opening of the compression screw plug (5); a power line (16) of the cable (1) is connected with an explosion-proof socket (19) through a sealing plug (10), a grounding wire (15) of the explosion-proof socket (19) is connected with a wiring terminal (14), and the wiring terminal (14) is connected with a tightening nut (12) through a grounding screw (13).
4. The apparatus of claim 3, wherein: the top end of the compression screw plug (5) is in threaded connection with the sealing plug seat (11); a group of A sealing rings (7) are arranged on the excircle of the compression plug screw (5), and the A sealing rings (7) are positioned between the compression plug screw (5) and the sealing plug seat (11).
5. The apparatus of claim 4, wherein: a group of sealing rings B (8) are arranged on the excircle of the sealing plug seat (11); the B sealing ring (8) is positioned between the sealing plug seat (11) and the adapter tube (2).
6. The apparatus of claim 3, wherein: an end cover (17) is arranged at the top of the adapter tube (2); the end cover (17) is in threaded connection with the adapter tube (2), and a group of C sealing rings (9) are arranged between the end cover (17) and the adapter tube (2).
7. The apparatus of claim 6, wherein: explosion-proof socket (19) are installed on adaptor pipe (2) top, and power cord (16) and the heart yearn of cable (1) of explosion-proof socket (19) are connected, have inserted explosion-proof plug (20) on explosion-proof socket (19).
8. The apparatus of claim 7, wherein: a rubber gasket (18) is arranged between the explosion-proof socket (19) and the end cover (17), and the explosion-proof socket (19) and the end cover (17) are fixed through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562294.3A CN114284789B (en) | 2021-12-20 | 2021-12-20 | Wellhead sealing explosion-proof method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562294.3A CN114284789B (en) | 2021-12-20 | 2021-12-20 | Wellhead sealing explosion-proof method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114284789A true CN114284789A (en) | 2022-04-05 |
| CN114284789B CN114284789B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111562294.3A Active CN114284789B (en) | 2021-12-20 | 2021-12-20 | Wellhead sealing explosion-proof method and device |
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| Country | Link |
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| CN (1) | CN114284789B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262765Y (en) * | 1996-08-06 | 1997-09-17 | 石油勘探开发科学研究院机械研究所 | Downhole cable coupling |
| CN201671652U (en) * | 2010-05-26 | 2010-12-15 | 贵州航天凯山石油仪器有限公司 | Explosion-proof wellhead apparatus |
| CN103151755A (en) * | 2012-12-20 | 2013-06-12 | 贵州航天凯山石油仪器有限公司 | Method and structure capable of improving reliability of downhole instrument connecting cable |
| CN105356138A (en) * | 2015-12-04 | 2016-02-24 | 重庆地质仪器厂 | High-temperature-resistant underground instrument sealing connection member |
| CN205259961U (en) * | 2015-11-02 | 2016-05-25 | 贵州航天凯山石油仪器有限公司 | Center leads to cable formula drilling rod |
| CN108104762A (en) * | 2017-12-18 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of wellhead cable sealing device and encapsulating method |
| CN111355098A (en) * | 2020-03-19 | 2020-06-30 | 南通市通州区三槐机械制造有限公司 | Mining explosion-proof high-voltage cable connector |
| CN216665549U (en) * | 2021-12-20 | 2022-06-03 | 贵州航天凯山石油仪器有限公司 | Wellhead sealing explosion-proof device |
-
2021
- 2021-12-20 CN CN202111562294.3A patent/CN114284789B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262765Y (en) * | 1996-08-06 | 1997-09-17 | 石油勘探开发科学研究院机械研究所 | Downhole cable coupling |
| CN201671652U (en) * | 2010-05-26 | 2010-12-15 | 贵州航天凯山石油仪器有限公司 | Explosion-proof wellhead apparatus |
| CN103151755A (en) * | 2012-12-20 | 2013-06-12 | 贵州航天凯山石油仪器有限公司 | Method and structure capable of improving reliability of downhole instrument connecting cable |
| CN205259961U (en) * | 2015-11-02 | 2016-05-25 | 贵州航天凯山石油仪器有限公司 | Center leads to cable formula drilling rod |
| CN105356138A (en) * | 2015-12-04 | 2016-02-24 | 重庆地质仪器厂 | High-temperature-resistant underground instrument sealing connection member |
| CN108104762A (en) * | 2017-12-18 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of wellhead cable sealing device and encapsulating method |
| CN111355098A (en) * | 2020-03-19 | 2020-06-30 | 南通市通州区三槐机械制造有限公司 | Mining explosion-proof high-voltage cable connector |
| CN216665549U (en) * | 2021-12-20 | 2022-06-03 | 贵州航天凯山石油仪器有限公司 | Wellhead sealing explosion-proof device |
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| Publication number | Publication date |
|---|---|
| CN114284789B (en) | 2024-06-25 |
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