CN202531080U - Wellhead sealing hanger - Google Patents
Wellhead sealing hanger Download PDFInfo
- Publication number
- CN202531080U CN202531080U CN2012200500507U CN201220050050U CN202531080U CN 202531080 U CN202531080 U CN 202531080U CN 2012200500507 U CN2012200500507 U CN 2012200500507U CN 201220050050 U CN201220050050 U CN 201220050050U CN 202531080 U CN202531080 U CN 202531080U
- Authority
- CN
- China
- Prior art keywords
- wall
- hanger body
- main body
- ring
- hanger main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000725 suspension Substances 0.000 claims description 11
- 229920002449 FKM Polymers 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 229920001973 fluoroelastomer Polymers 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Gasket Seals (AREA)
Abstract
A wellhead sealing hanger is applied to an oil extraction wellhead device of an oil field. The outer wall of the hanger main body is in a three-step cylinder shape, the hanger main body is provided with a center hole, and two ends of the hanger main body are respectively provided with an oil pipe internal thread. A fluororubber sealing ring is sleeved in the ring groove on the outer wall of the hanger main body; the outer wall of the middle part of the hanger main body is sleeved with an annular gasket; 2-4 groups of sealing assemblies are sleeved on the outer wall of the middle part of the hanger main body; the sealing assembly is formed by an annular spacer ring, a metal O-shaped ring and an annular gasket, and a compression nut is fixed at the lower end of the outer wall of the middle part of the hanger main body through threads. The effect is as follows: the sealing pressure can be 14MPa, and the effective sealing between the oil pipe in the three-pipe wellhead device and the annular space of the casing pipe in the processes of steam injection, production and snubbing workover operation by the fireflood assisted gravity drainage process technology can be solved.
Description
Technical field
The utility model relates to oil well mouth device, particularly is used for the sealed suspension device of three pipe thermal recovery well head devices of ultra thick oil horizontal well fireflood assisted gravity drainage technology.
Background technology
Along with the raising that fireflood mechanism is familiar with and the development of fireflood technology, domestic and international increasing oil field is used for viscous crude and the exploitation of all kinds of oil reservoir with the fireflood technology.And the application of fireflood assisted gravity drainage technology still is in the starting stage.At present, the special-purpose wellhead assembly of thick oil horizontal well that on-the-spot shortage still is applicable to this kind technology, and existing wellhead assembly is difficult to satisfy to the fireflood explained hereafter, annotates the needs of vapour, test and snubbing serving.
The utility model content
The purpose of the utility model is: a kind of well head sealed suspension device is provided, can satisfies fireflood assisted gravity drainage technology to annotating the needs of vapour, production, snubbing serving; Satisfy the technological requirement of fireflood assisted gravity drainage.
The technical scheme that the utility model adopts is: well head sealed suspension device comprises viton seal ring, hanger body, ring washer, spacer ring, metal O type circle, annular gasket and clamping nut; The hanger body outer wall is the three ladder cylinder bodily forms, and hanger body has centre bore, and the hanger body two ends have the oil pipe internal thread respectively, can connect oil pipe.It is characterized in that: in hanger body outer wall upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body outer wall, is with viton seal ring; Be with ring washer on the outer wall of hanger body middle part, the last plane of ring washer contacts with hanger body outer wall step surface; On the outer wall of hanger body middle part, be with 2～4 groups of black boies; Described black box is made up of spacer ring, metal O type circle and the annular gasket of annular; There is external screw thread outer wall lower end, hanger body middle part, and screw thread is fixed with clamping nut in outer wall lower end, hanger body middle part.Ring washer and annular gasket adopt ptfe composite to process.
At first earlier viton seal ring is inserted in the rectangular channel at hanger body top from top, then from the bottom with ring washer, spacer ring, metal O type circle and annular gasket, successively be inserted in hanger body, the clamping nut of screwing at last successively.
This well head sealed suspension device adopts the two-stage sealing, and first order encapsulant is selected viton seal ring for use, is installed in the device top rectangular groove.The pad aggregate erection of metal O type circle and ptfe composite is adopted in second level sealing.If first order sealing in use produces seal failure or can not seal fully; When pressure conducts to the secondary seal position; Because what metal O type circle adopted is bottom slot,, can realize laterally interior effective seal so expand behind the pressurized; Packing ring and pad that the ptfe composite that secondary seal adopts is processed are realized vertically interior effective seal.
The beneficial effect of the utility model: the utility model well head sealed suspension device; Through the room pressure leakage test, ability sealing load 14MPa explains that this is reasonable in design; Novel structure; Reliable operation can solve fireflood assisted gravity drainage technology to annotating in vapour, production and the not kill-job workover treatment process the three effective sealings of pipe well mouth device inner oil tube between casing annulus.
Description of drawings
Fig. 1 is the utility model well head sealed suspension device structural profile sketch map.
Among the figure, 1-viton seal ring, 2-hanger body, 3-ring washer, 4-spacer ring, 5-metal O type circle, 6-annular gasket, 7-clamping nut.
The specific embodiment
Embodiment 1: with a well head sealed suspension device is example, and the utility model is done further explain.
Consult Fig. 1.The utility model well head sealed suspension device comprises viton seal ring 1, hanger body 2, ring washer 3, spacer ring 4, metal O type circle 5, annular gasket 6 and clamping nut 7.
Hanger body 2 outer walls are the three ladder cylinder bodily forms; Hanger body 2 has the centre bore of 100mm; Hanger body 2 two ends have API standard oil pipe internal thread respectively, and the internal thread specification is 41/2TBG, can connect the smooth input that oil pipe satisfies blanking plug in the not kill-job well workover process.In hanger body 2 outer walls upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body 2 outer walls, is with viton seal ring 1.Be with ring washer 3 on the hanger body 2 middle part outer walls, the last plane of ring washer 3 contacts with hanger body 2 outer wall step surfaces.On hanger body 2 middle part outer walls, be with three groups of black boies, realize sealing load 14MPa.Described black box is made up of spacer ring 4, metal O type circle 5 and the annular gasket 6 of annular.There is external screw thread outer wall lower end, hanger body 2 middle part, and screw thread is fixed with clamping nut 7 in outer wall lower end, hanger body 2 middle part.Ring washer 3 adopts ptfe composite to process with annular gasket 6.
Claims (2)
1. a well head sealed suspension device comprises viton seal ring (1), hanger body (2), ring washer (3), spacer ring (4), metal O type circle (5), annular gasket (6) and clamping nut (7); Hanger body (2) outer wall is the three ladder cylinder bodily forms; Hanger body (2) has centre bore; Hanger body (2) two ends have the oil pipe internal thread respectively; It is characterized in that: in hanger body (2) outer wall upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body (2) outer wall, is with viton seal ring (1); Be with ring washer (3) on the outer wall of hanger body (2) middle part, the last plane of ring washer (3) contacts with hanger body (2) outer wall step surface; On the outer wall of hanger body (2) middle part, be with 2～4 groups of black boies; Described black box is made up of spacer ring (4), metal O type circle (5) and the annular gasket (6) of annular; There is external screw thread outer wall lower end, hanger body (2) middle part, and screw thread is fixed with clamping nut (7) in outer wall lower end, hanger body (2) middle part.
2. well head sealed suspension device according to claim 1 is characterized in that: described ring washer (3) and annular gasket (6) adopt ptfe composite to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200500507U CN202531080U (en) | 2012-02-16 | 2012-02-16 | Wellhead sealing hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200500507U CN202531080U (en) | 2012-02-16 | 2012-02-16 | Wellhead sealing hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531080U true CN202531080U (en) | 2012-11-14 |
Family
ID=47132270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200500507U Expired - Fee Related CN202531080U (en) | 2012-02-16 | 2012-02-16 | Wellhead sealing hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531080U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306628A (en) * | 2013-05-22 | 2013-09-18 | 新疆力信油田工程技术有限公司 | Mechanical recovery wellhead boost protector |
| CN103615199A (en) * | 2013-11-28 | 2014-03-05 | 中国石油天然气股份有限公司 | Three-pipe same-well-barrel oil extraction process equipment for steam injection, oil extraction and temperature and pressure real-time monitoring of horizontal well |
| CN110905435A (en) * | 2019-12-29 | 2020-03-24 | 何华 | Be used for sealed hanger of oil well head |
-
2012
- 2012-02-16 CN CN2012200500507U patent/CN202531080U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306628A (en) * | 2013-05-22 | 2013-09-18 | 新疆力信油田工程技术有限公司 | Mechanical recovery wellhead boost protector |
| CN103615199A (en) * | 2013-11-28 | 2014-03-05 | 中国石油天然气股份有限公司 | Three-pipe same-well-barrel oil extraction process equipment for steam injection, oil extraction and temperature and pressure real-time monitoring of horizontal well |
| CN110905435A (en) * | 2019-12-29 | 2020-03-24 | 何华 | Be used for sealed hanger of oil well head |
| CN110905435B (en) * | 2019-12-29 | 2021-10-01 | 山东健源石油工程技术有限公司 | Be used for sealed hanger of oil well head |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20210216 |