CN202788725U - Metal hard sealing oil tube head - Google Patents
Metal hard sealing oil tube head Download PDFInfo
- Publication number
- CN202788725U CN202788725U CN 201220491655 CN201220491655U CN202788725U CN 202788725 U CN202788725 U CN 202788725U CN 201220491655 CN201220491655 CN 201220491655 CN 201220491655 U CN201220491655 U CN 201220491655U CN 202788725 U CN202788725 U CN 202788725U
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- Prior art keywords
- seal
- ring
- hanger body
- hanger
- oil tube
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- Expired - Fee Related
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Abstract
The utility model relates to a metal hard sealing oil tube head comprising an oil tube cross, an oil tube hanger and a sleeve tube secondary sealing mechanism arranged at the bottom of the oil tube cross. The oil tube hanger is fixed at the upper end of a vertical through hole of the oil tube cross through a top thread. The top of the oil tube cross is provided with a flange and connected with the flange through a fastening piece. The oil tube hanger comprises a hanger body, a first sealing piece arranged on the upper portion of the hanger body, and a second sealing piece arranged in the middle of the hanger body. The excircle of the upper portion and the excircle of the middle portion of the hanger body are respectively provided with steps matched with the two sealing pieces, the top end of the hanger body is provided with a metal check ring, and an upper end inner hole and a lower end inner hole of the hanger body are provided with oil tube threads. The metal hard sealing oil tube head has the advantages of being large in plastic deformation capacity, strong in elastic compensation capacity, reliable in sealing performance, and particularly suitable for being used in gas well mouths and well mouths containing sulfur and carbon dioxide.
Description
Technical field
The novel tubing head that hangs oil pipe in a kind of oil drilling process that relates to of this use belongs to the petroleum machinery technical field.
Background technology
In the oil exploitation process, every mouthful of well all must be installed a cover wellhead assembly, wellhead assembly all is comprised of tubing head and production tree, tubing head is comprised of oil pipe four-way, boll-weevil hanger, crossover flange and valve, all need to carry out effective sealing between boll-weevil hanger and crossover flange, boll-weevil hanger and oil pipe four-way, lower parts casing pipe and oil pipe four-way, what mostly use at present is rubber seal, the applicable temperature range of rubber seal is narrower, and has easily aging, the drawback such as application life is short, safety factor is low; The example that adopts metal sealing is also arranged in the prior art, but all be simple tapered squeezing sealing, exist the problems such as plastic deformation ability is poor, elastic compensating power not enough, sealing performance is unreliable, leakage of oil, gas leak phenomenon also appear easily, when particularly having pernicious gas in the down-hole, harmfulness is very large, directly has influence on the safety of the person and equipment.
Summary of the invention
For overcoming the deficiencies in the prior art part, this use is novel to provide that a kind of plastic deformation ability is large, strong, the reliable metal hard-sealing tubing head of sealing performance of elastic compensating power foot.
The technical solution of the utility model: a kind of metal hard-sealing tubing head, comprise the oil pipe four-way, boll-weevil hanger and the sleeve pipe secondary seal mechanism that is positioned at oil pipe four-way bottom, boll-weevil hanger is fixed on oil pipe four-way vertical through hole upper end by jackscrew, oil pipe four-way top is provided with flange, and be connected by securing member with flange, described boll-weevil hanger comprises the hanger body, be contained in first seal on hanger body top and second seal at middle part, be respectively equipped with the step that matches with the first seal and the second seal on the top of hanger body and the middle part cylindrical, the top of hanger body is equipped with metal collar, and upper end endoporus and the lower end endoporus of hanger body are equipped with tubing round thread.
Described the first seal and the second seal mainly are made of pressure ring, double flute joint ring and support ring, and the upper and lower V-type groove that is provided with of described double flute joint ring is respectively equipped with the boss that matches with the V-type groove on pressure ring and the support ring; Be provided with below the second seal for supporting the second seal, tapped tight cap, the relevant position of hanger body is provided with the screw thread that matches with tight cap internal thread.
Described sleeve pipe secondary seal mechanism comprises spacer ring, interior conical ring, outer cone ring and the compacting ring that connects successively from top to bottom, and compacting ring is bolted on the bottom of oil pipe four-way.
The beneficial effects of the utility model are: adopted upper and lower surface to be provided with the double flute joint ring of V-type groove and be provided with match with the V-type groove pressure ring of boss and the shape metallic leak-proof structure of support ring, has large, strong, the reliable advantage of sealing performance of elastic compensating ability of plastic deformation ability, can can not lose efficacy with the nonvolatil use of wellhead assembly, avoided to cause because of simple tapered squeezing sealing post compensation scarce capacity the harm of gas leakage, be particularly suitable for using in gas well mouth, sulfur-bearing and carbon dioxide well head, sealing reliability, safety are high.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of boll-weevil hanger in the utility model;
Fig. 3 is the A place enlarged drawing of Fig. 2;
Fig. 4 is the structural representation of the utility model middle sleeve secondary seal mechanism.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1 to Fig. 4, metal hard-sealing tubing head of the present utility model, comprise oil pipe four-way 1, boll-weevil hanger 2 and be positioned at the sleeve pipe secondary seal mechanism 3 of oil pipe four-way bottom, boll-weevil hanger 2 is fixed on oil pipe four-way 1 vertical through hole upper end by jackscrew 4, oil pipe four-way 1 top is provided with flange 5, and is connected by bolt 6 with flange 5; Described boll-weevil hanger 2 comprises hanger body 2-1, is contained in first seal on hanger body 2-1 top and second seal at middle part, be respectively equipped with the step that matches with the first seal and the second seal on the top of hanger body 2-1 and the middle part cylindrical, the first seal and the second seal mainly are made of pressure ring 2-3, double flute joint ring 2-4 and support ring 2-5, the upper and lower V-type groove that is provided with of double flute joint ring is respectively equipped with the boss that matches with the V-type groove on pressure ring and the support ring; Below the second seal, be provided with for supporting the second seal, tapped tight cap 2-2, the relevant position of hanger body 2-1 is provided with the screw thread that matches with tight cap 2-2 internal thread, the top of hanger body 2-1 is equipped with metal collar 2-6, and upper end endoporus and the lower end endoporus of hanger body 2-1 are equipped with tubing round thread; Described sleeve pipe secondary seal mechanism 3 comprises spacer ring 3-1, interior conical ring 3-2, outer cone ring 3-3 and the compacting ring 3-4 that connects successively from top to bottom, and compacting ring 3-4 is fixed on the bottom of oil pipe four-way by bolt 3-5.
Boll-weevil hanger 2 assemblings: hanger body 2-1 is just put, finish the installation of the first seal, reinstall metal collar 2-6; Hanger body 2-1 is inverted, and the support ring 2-5 that packs into successively, double flute joint ring 2-4, pressure ring 2-3 reinstall tight cap 2-2 and screw screw thread.
During assembling, oil pipe four-way 1 is inverted (large flange face is upper), the sleeve pipe secondary seal mechanism 3 of packing into.After the installation, qualified through pressure test, enter into lower oil pipe program.When lower last root oil pipe, the lower end inner hole thread of the hanger body 2-1 of the boll-weevil hanger 2 that assembling is complete is connected with oil pipe upper end screw thread and is fastening, transfer tubing string, under the tubing string Action of Gravity Field, the pressure ring 2-3 of boll-weevil hanger 2 is located on the endoporus shoulder of oil pipe four-way 1, tighten jackscrew 4, fixedly boll-weevil hanger 2, flange 5 bottom endoporus are aimed at the cylinder that protrude on boll-weevil hanger 2 tops, place until be inserted in fully downwards, with bolt 6 that flange 5 and oil pipe four-way 1 is in addition fastening, along with tightening of bolt 6, flange 5 endoporus shoulders push the pressure ring on the first seal, the endoporus shoulder of oil pipe four-way 1 pushes the pressure ring on the second seal, support ring on the first seal and the second seal is subject to reaction force, respectively with two seals on pressure ring simultaneously up and down two V-type grooves of double flute joint ring are formed extruding, the double flute joint ring produces dilatancy, the inner hole wall of oil pipe four-way 1 is close in the outside of the second seal, the cylindrical of boll-weevil hanger body 2-1 is close in inside, has realized the metal sealing between boll-weevil hanger 2 and the oil pipe four-way 1; The inner hole wall of flange 5 is close in the outside of the first seal, and the cylindrical of boll-weevil hanger body 2-1 is close in inside, has realized the metal sealing between boll-weevil hanger 2 and the flange 5.
Claims (3)
1. metal hard-sealing tubing head, comprise the oil pipe four-way, boll-weevil hanger and the sleeve pipe secondary seal mechanism that is positioned at oil pipe four-way bottom, boll-weevil hanger is fixed on oil pipe four-way vertical through hole upper end by jackscrew, oil pipe four-way top is provided with flange, and be connected by securing member with flange, it is characterized in that, described boll-weevil hanger comprises the hanger body, be contained in first seal on hanger body top and second seal at middle part, be respectively equipped with the step that matches with the first seal and the second seal on the top of hanger body and the middle part cylindrical, the top of hanger body is equipped with metal collar, and upper end endoporus and the lower end endoporus of hanger body are equipped with tubing round thread.
2. metal hard-sealing tubing head as claimed in claim 1, it is characterized in that, described the first seal and the second seal mainly are made of pressure ring, double flute joint ring and support ring, the upper and lower V-type groove that is provided with of described double flute joint ring is respectively equipped with the boss that matches with the V-type groove on pressure ring and the support ring; Be provided with below the second seal for supporting the second seal, tapped tight cap, the relevant position of hanger body is provided with the screw thread that matches with tight cap internal thread.
3. metal hard-sealing tubing head as claimed in claim 1 or 2 is characterized in that, described sleeve pipe secondary seal mechanism comprises spacer ring, interior conical ring, outer cone ring and the compacting ring that connects successively from top to bottom, and compacting ring is bolted on the bottom of oil pipe four-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220491655 CN202788725U (en) | 2012-09-21 | 2012-09-21 | Metal hard sealing oil tube head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220491655 CN202788725U (en) | 2012-09-21 | 2012-09-21 | Metal hard sealing oil tube head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788725U true CN202788725U (en) | 2013-03-13 |
Family
ID=47816001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220491655 Expired - Fee Related CN202788725U (en) | 2012-09-21 | 2012-09-21 | Metal hard sealing oil tube head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788725U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234657A (en) * | 2014-09-23 | 2014-12-24 | 江苏金石科技有限公司 | Double-limiting metal sealing oil pipe suspender |
| CN105507850A (en) * | 2016-01-19 | 2016-04-20 | 中国石油集团渤海石油装备制造有限公司 | Metal-sealed fracturing shale gas production wellhead |
| CN107724969A (en) * | 2017-11-03 | 2018-02-23 | 苏州优力克流体控制科技有限公司 | A kind of oil pipe head connector |
| CN108019179A (en) * | 2017-11-21 | 2018-05-11 | 纽威石油设备（苏州）有限公司 | A kind of metal sealing component and boll-weevil hanger |
| CN113167107A (en) * | 2018-09-28 | 2021-07-23 | 普莱克薛斯股份公开有限公司 | Improved seal for a well |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN113250667A (en) * | 2021-06-17 | 2021-08-13 | 东营政阳自动化科技有限公司 | Thermal recovery wellhead assembly |
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
| CN113622857A (en) * | 2021-08-30 | 2021-11-09 | 江苏益马机械有限公司 | High-pressure anti-corrosion integral wellhead device |
| CN116291291A (en) * | 2023-05-10 | 2023-06-23 | 建湖县鸿达阀门管件有限公司 | 175MPa three-layer ultrahigh pressure casing head |
| CN117248850A (en) * | 2023-11-17 | 2023-12-19 | 大庆市璞庆钻采设备制造有限公司 | Wellhead sealing protection device for oil well fracturing |
-
2012
- 2012-09-21 CN CN 201220491655 patent/CN202788725U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234657A (en) * | 2014-09-23 | 2014-12-24 | 江苏金石科技有限公司 | Double-limiting metal sealing oil pipe suspender |
| CN105507850A (en) * | 2016-01-19 | 2016-04-20 | 中国石油集团渤海石油装备制造有限公司 | Metal-sealed fracturing shale gas production wellhead |
| CN107724969A (en) * | 2017-11-03 | 2018-02-23 | 苏州优力克流体控制科技有限公司 | A kind of oil pipe head connector |
| CN108019179A (en) * | 2017-11-21 | 2018-05-11 | 纽威石油设备（苏州）有限公司 | A kind of metal sealing component and boll-weevil hanger |
| CN113167107B (en) * | 2018-09-28 | 2024-03-29 | 普莱克薛斯股份公开有限公司 | Improved seal for well |
| CN113167107A (en) * | 2018-09-28 | 2021-07-23 | 普莱克薛斯股份公开有限公司 | Improved seal for a well |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN113250667A (en) * | 2021-06-17 | 2021-08-13 | 东营政阳自动化科技有限公司 | Thermal recovery wellhead assembly |
| CN113250667B (en) * | 2021-06-17 | 2021-11-12 | 胜利方兰德石油装备股份有限公司 | Thermal recovery wellhead assembly |
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
| CN113622857A (en) * | 2021-08-30 | 2021-11-09 | 江苏益马机械有限公司 | High-pressure anti-corrosion integral wellhead device |
| CN113622857B (en) * | 2021-08-30 | 2022-10-21 | 江苏益马机械有限公司 | High-pressure anti-corrosion integral wellhead device |
| CN116291291A (en) * | 2023-05-10 | 2023-06-23 | 建湖县鸿达阀门管件有限公司 | 175MPa three-layer ultrahigh pressure casing head |
| CN117248850A (en) * | 2023-11-17 | 2023-12-19 | 大庆市璞庆钻采设备制造有限公司 | Wellhead sealing protection device for oil well fracturing |
| CN117248850B (en) * | 2023-11-17 | 2024-02-20 | 大庆市璞庆钻采设备制造有限公司 | Wellhead sealing protection device for oil well fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |