CN201083105Y - Well head plunger reciprocating machinery dynamic sealing device - Google Patents
Well head plunger reciprocating machinery dynamic sealing device Download PDFInfo
- Publication number
- CN201083105Y CN201083105Y CNU2007201763142U CN200720176314U CN201083105Y CN 201083105 Y CN201083105 Y CN 201083105Y CN U2007201763142 U CNU2007201763142 U CN U2007201763142U CN 200720176314 U CN200720176314 U CN 200720176314U CN 201083105 Y CN201083105 Y CN 201083105Y
- Authority
- CN
- China
- Prior art keywords
- well head
- pump barrel
- sealing device
- plunger
- dynamic sealing
- 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
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Abstract
A well mouth plunger reciprocating mechanical dynamic seal device mainly solves the sealing problem of a flexible sucker rod and a well mouth. The utility model is characterized in that: a pump barrel (3) is connected under a tubing hanger (1); a falling protection centralizer is connected under the pump barrel (3); the inside of the pump barrel (3) has a plunger (4); the upper end and the lower end of the plunger (4) are respectively connected with a flexible sucker rod (5) and a sucker rod nipple (6). The utility model has the characteristics of excellent seal effect, long service life and a simple structure.
Description
Technical field:
The utility model relates to interior used sealing device, especially well head plunger reciprocating machine dynamic sealing device of well head in the oil recovery field, oil field.
Background technology:
Along with Oilfield developing, technology constantly develops, mechanical oil recovery equip ment from the beam pumping unit to the submersible electric pump, screw pump etc., of a great variety, to adapt to the needs of different productive lives.At present, advantage such as stripper well adopts single-crank multiple-stroke oil pumper lifting well liquid, and is low because of its power consumption, and one-time investment is little is well received.At present, single-crank multiple-stroke flexible type pumping unit adopts flexible rod to replace existing rigidity sucker rod, the sealing of flexible rod and well head exists very big difficulty like this, solve bad meeting and make seal failure, directly influence the ordinary production of well head, cause the well head surrounding environment to pollute and the crude oil waste, also can influence the popularization of this form oil pumper.
The utility model content:
In order to solve the problem of flexible rod and well head sealing, the utility model provides a kind of well head plunger reciprocating machine dynamic sealing device, and this well head plunger type reciprocating machine dynamic sealing device has good sealing effect, long service life and characteristic of simple structure.
The technical solution of the utility model is: this well head plunger reciprocating machine dynamic sealing device comprises tubing string and tubing hanger, be connected with pump barrel under the tubing hanger, be connected with anti-lost centralizer under the pump barrel, plunger is arranged in the pump barrel, the plunger upper and lower end is connected with flexible rod and sucker rod short circuit respectively.
Be connected with flat silk short circuit under the tubing hanger in the such scheme; Be connected with reducer union under the flat silk short circuit, be connected with pump barrel under the reducer union in the tubing string; Pump barrel radially has a sand control groove at least.
The utlity model has following beneficial effect: this well head plunger reciprocating machine dynamic sealing device is owing to take such scheme, because of tubing hanger places in the big four, tubing hanger links to each other with pump barrel, so well liquid can only be by the ring cavity between tubing string and sleeve pipe through big four output down, and the passage that is communicated with well head is cut off by plunger, make well liquid to leak out from well head, thereby solve the problem of flexible rod and well head sealing, play the effect of sealing, and has a good sealing effect, long service life and characteristic of simple structure help applying.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-tubing hanger among the figure, 2-tubing string, 3-pump barrel, 4-plunger, 5-flexible rod, 6-sucker rod short circuit, the flat silk of 7-short circuit, 8-groove, 9-reducer union.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this well head plunger reciprocating machine dynamic sealing device comprises tubing string 2 and tubing hanger 1, tubing hanger is connected with flat silk short circuit 7 for 1 time, flat silk short circuit is connected with reducer union 97 times, be connected with pump barrel 3 in 9 times tubing strings 2 of reducer union, pump barrel is connected with anti-lost centralizer 3 times, and plunger 4 is arranged in the pump barrel 3, pump barrel 3 radially has a sand control groove 8 at least, and plunger 4 upper and lower ends are connected with flexible rod 5 and sucker rod short circuit 6 respectively.Because tubing hanger 1 places in the big four, tubing hanger 1 links to each other with pump barrel 3, well liquid in the tubing string 2 can only be by the ring cavity between tubing string 2 and sleeve pipe through big four output down, and the passage that is communicated with well head is cut off by plunger 4, make well liquid to leak out from well head, thereby solve the problem of flexible rod and well head sealing, and have good sealing effect, long service life and characteristic of simple structure.
Claims (4)
1. well head plunger reciprocating machine dynamic sealing device, comprise tubing string (2) and tubing hanger (1), it is characterized in that: be connected with pump barrel (3) under the tubing hanger (1), pump barrel is connected with anti-lost centralizer under (3), plunger (4) is arranged in the pump barrel (3), and plunger (4) upper and lower end is connected with flexible rod (5) and sucker rod short circuit (6) respectively.
2. well head plunger reciprocating machine dynamic sealing device according to claim 1 is characterized in that: be connected with flat silk short circuit (7) under the tubing hanger (1).
3. well head plunger reciprocating machine dynamic sealing device according to claim 2 is characterized in that: be connected with reducer union (9) under the flat silk short circuit (7), reducer union (9) is connected with pump barrel (3) in the tubing string (2) down.
4. well head plunger reciprocating machine dynamic sealing device according to claim 3 is characterized in that: pump barrel (3) radially has a sand control groove (8) at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201763142U CN201083105Y (en) | 2007-09-07 | 2007-09-07 | Well head plunger reciprocating machinery dynamic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201763142U CN201083105Y (en) | 2007-09-07 | 2007-09-07 | Well head plunger reciprocating machinery dynamic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083105Y true CN201083105Y (en) | 2008-07-09 |
Family
ID=39625570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201763142U Expired - Fee Related CN201083105Y (en) | 2007-09-07 | 2007-09-07 | Well head plunger reciprocating machinery dynamic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083105Y (en) |
-
2007
- 2007-09-07 CN CNU2007201763142U patent/CN201083105Y/en not_active Expired - Fee Related
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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: 20080709 Termination date: 20160907 |