CN203729940U - Follow-up type wellhead sealing device under pressure - Google Patents
Follow-up type wellhead sealing device under pressure Download PDFInfo
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- CN203729940U CN203729940U CN201420046081.4U CN201420046081U CN203729940U CN 203729940 U CN203729940 U CN 203729940U CN 201420046081 U CN201420046081 U CN 201420046081U CN 203729940 U CN203729940 U CN 203729940U
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- follow
- sealing device
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- under pressure
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Abstract
The utility model relates to a follow-up type wellhead sealing device under pressure. The follow-up type wellhead sealing device under pressure comprises a polish rod, a base and a protective cover. The base is fixed to a wellhead, the polish rod penetrates through the base to be connected to the inside of a well, and the protective cover is fixed to the polish rod on the upper portion of the base. The follow-up type wellhead sealing device under pressure further comprises a telescopic body capable of stretching out and drawing back in the axial direction, the upper end of the telescopic body is fixed to the polish rod through a pressing device, the lower end of the telescopic body is fixed to the base through pressing cap pieces, and the polish rod is axially sleeved with the telescopic body. The base is in threaded connection with the wellhead. The telescopic body is formed by pressing a plurality of guide rings spaced in parallel through nitrile rubber and glass fibers in an integrated mode, and the guide rings are coaxially connected with the polish rod in a sleeved mode. The upper end of the telescopic body is covered with the protective cover. The follow-up type wellhead sealing device under pressure is reasonable in structure, safety production can be guaranteed, the follow-up type wellhead sealing device under pressure can be used at wellheads under any condition such as deviated holes and highly corroded sucker rods, daily maintenance by workers is not needed, and the service life is long.
Description
Technical field:
The utility model relates to a kind of Follow-up wellheadpressure sealing device.
Background technology:
For a long time, the structure design due to traditional wellhead packing box is passive seal.Its structure is comprised of base, rubber pad, sealed compartment, pressure cap, passive seal, easy to wear, expense is artificial, the short time must change sealing rubber pad, in use every several days, just need manually press pressure cap, when pressure cap is pressed onto spacing can not pressure again, will cause stopping the well waste oil pumper activity duration by pressure release replacing rubber gasket.Make applying unit reduce the waste that output has increased running cost and manpower.
Summary of the invention:
The purpose of this utility model is the deficiency that overcomes existing wellhead packing box, provide a kind of rational in infrastructure, can guarantee safety in production, can use the well head in any situation again, as sucker rod of inclined to one side well, high corrosion etc., without daily artificial maintenance, the well head slave tape pressure sealing device of long service life.
Solution of the present utility model is: a kind of Follow-up wellheadpressure sealing device, comprise polished rod, base and protection receipts joint cover, base is fixed on well head, polished rod is connected in well through base, protection is received joint cover and is fixed on the polished rod of base top, also comprise can axial stretching extrusome, described extrusome upper end is fixed on polished rod by compactor, extrusome lower end is fixed on base by pressure cap sheet, and extrusome is axially socketed on polished rod.
Further, described base with well head for being threaded.
Further, described extrusome is formed through nitrile rubber and the compacting of glass fiber one by the guide ring of a plurality of parallel interval, and a plurality of guide ring coaxial sleeves are connected on polished rod.
Further again, described protection is received joint and is covered in extrusome upper end.
Adopt the advantage of the present embodiment to be:
1. the design that base internal thread and outer wellhead are threaded, is easy to dismounting and the assembling of equipment, is applicable to various types of oil wells.
2. utilize pressure cap sheet that the lower end of telescopic body is fixed on base, with compactor by the upper end of telescopic body by being fixed on polished rod, again protective cover and compactor are fixed, when oil machine operation polished rod moves upward, telescopic body upwards draws high, when oil pumper operation polished rod moves downward, telescopic body is shunk downwards, and protective cover draws in downwards simultaneously.Liquid shrinkable is followed light Follow-up seal.Without artificial daily nurse; Slave tape means of press seals, does not need rubber seal parts, cost-saving.
3. on the socket of the guide ring on extrusome and polished rod, for guiding, without friction, physical life is long.Device system contains base, pressure cap sheet, extrusome, compactor, protective cover and combines, and disassembly and assembly are convenient and swift, easy to maintenance, cost-saving.
Accompanying drawing explanation
Fig. 1 is generalized section of the invention process.
In figure: joint cover 1, compactor 2, extrusome 3, guide ring 4, polished rod 5, pressure cap sheet 6, base 7 are received in protection.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model and embodiment are described in further detail.
In shown in Fig. 1, a kind of Follow-up wellheadpressure sealing device, comprises protection receipts joint cover 1, compactor 2, extrusome 3, guide ring 4, polished rod 5, pressure cap sheet 6, base 7.The upper end of extrusome 3 is fixed on polished rod 5 by compactor 2, and lower end is fixed on base 7 by pressure cap sheet 6, and protection is received joint cover 1 and is fixed on compactor 2, and polished rod 5 is deep in well head through the base 8 being fixed on well head.
When oil pumper is worked, polished rod 5 is flexible up and down, when polished rod 5 protrudes upward, the effect of tightening up due to compactor 2, together with polished rod 5 drive extrusomes 4 and protection receipts joint cover 1, protrude upward, be socketed on the guide ring 3 coaxial slide-and-guide on polished rod 5 on polished rod 5, the lower end of extrusome 4 is fixed on base 7 by pressure cap sheet 6, and the space forming after extrusome stretches is to wellhead sealing; In like manner, when polished rod 5 contracts downwards, the effect of tightening up due to compactor 2, together with polished rod 5 drive extrusomes 4 and protection receipts joint cover 1, contract downwards, be socketed on the guide ring 3 coaxial slide-and-guide on polished rod 5 on polished rod 5, the lower end of extrusome 4 is fixed on base 7 by pressure cap sheet 6, and the space after extrusome shrinks is to well head hydrodynamic reciprocating sealing.
Claims (4)
1. a Follow-up wellheadpressure sealing device, comprise polished rod, base and protection receipts joint cover, base is fixed on well head, polished rod is connected in well through base, protection is received joint cover and is fixed on the polished rod of base top, it is characterized in that: also comprise can axial stretching extrusome, described extrusome upper end is fixed on polished rod by compactor, extrusome lower end is fixed on base by pressure cap sheet, and extrusome is axially socketed on polished rod.
2. a kind of Follow-up wellheadpressure sealing device according to claim 1, is characterized in that: described base with well head for being threaded.
3. a kind of Follow-up wellheadpressure sealing device according to claim 1, is characterized in that: described extrusome is formed through nitrile rubber and the compacting of glass fiber one by the guide ring of a plurality of parallel interval, and a plurality of guide ring coaxial sleeves are connected on polished rod.
4. a kind of Follow-up wellheadpressure sealing device according to claim 1, is characterized in that: described protection is received joint and covered in extrusome upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046081.4U CN203729940U (en) | 2014-01-24 | 2014-01-24 | Follow-up type wellhead sealing device under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046081.4U CN203729940U (en) | 2014-01-24 | 2014-01-24 | Follow-up type wellhead sealing device under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729940U true CN203729940U (en) | 2014-07-23 |
Family
ID=51200020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420046081.4U Expired - Fee Related CN203729940U (en) | 2014-01-24 | 2014-01-24 | Follow-up type wellhead sealing device under pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790545A (en) * | 2014-01-24 | 2014-05-14 | 王鹏 | Follow-up type device for sealing well mouth under pressure |
-
2014
- 2014-01-24 CN CN201420046081.4U patent/CN203729940U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790545A (en) * | 2014-01-24 | 2014-05-14 | 王鹏 | Follow-up type device for sealing well mouth under pressure |
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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: 20140723 Termination date: 20180124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |