CN201306144Y - Wellhead sealing device for oil-water well - Google Patents
Wellhead sealing device for oil-water well Download PDFInfo
- Publication number
- CN201306144Y CN201306144Y CNU2008202265581U CN200820226558U CN201306144Y CN 201306144 Y CN201306144 Y CN 201306144Y CN U2008202265581 U CNU2008202265581 U CN U2008202265581U CN 200820226558 U CN200820226558 U CN 200820226558U CN 201306144 Y CN201306144 Y CN 201306144Y
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- CN
- China
- Prior art keywords
- cover body
- oil
- valve seat
- well
- sealing device
- 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
The utility model provides a wellhead sealing device for an oil-water well. A hard outer shell is arranged on the wellhead sealing device; an installing tube is arranged in the hard outer shell; the inner side of the installing tube is provided with a cover body through screw threads; a valve seat is fixed on the inner upper side of the cover body; the inner cavity of the valve body is communicated with a hole of the upper part of the cover body; the outer side of the valve seat is provided with a sleeve tube fixed on the cover body; the outer side of the sleeve tube is provided with a casing through screw threads; the inner side of the casing is provided with a spring; a steel ball is arranged between the spring and the valve seat; and another hole is arranged on the lower part of the casing. The wellhead sealing device can be arranged on the oil-water well with the stolen wellhead or without the connecting sleeve tube for preventing lawless persons from sawing, cutting and damaging the wellhead device, and has the advantages of firmness, reliability, high theft protection performance and high safety of scrapped oil-water wells.
Description
Technical field
The utility model provides the device on a kind of oil field shaft mouth, especially a kind of shut-in well device.
Background technology
In the oil extraction process, can produce many oil-water wells of scrapping.Because abandoned well is in the field usually, the lawless person can steal the sleeve pipe on the oil-water well well head of scrapping and isolate, and makes well head out of hand, will cause great loss in case blowout takes place.Someone adorns ball-and-seat on well head or casing coupling, with cement mortar the well head sealing is got up, to address this problem again.But the lawless person still can amputate the sleeve pipe below the box cupling, makes well head lose the box cupling that connects usefulness.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of oil-water well well head shut-in well device, to improve its theftproof performance, the safety that oil-water well is scrapped in enhancing.
The utility model is to realize like this, oil-water well well head shut-in well device has hard shell on described shut-in well device, installation tube is installed in the hard shell, by screw thread cover body is installed in the installation tube, the upper inner of cover body is fixed with valve seat, and valve base cavity communicates with the hole on cover body top, and the valve seat outside also has sleeve to be fixed on the cover body, the sleeve outside is equipped with housing by screw thread, spring is installed in the housing, between spring and the valve seat steel ball is installed, lower housing portion has another hole.
Adopt the shut-in well device of said structure, can be installed on the oil-water well of screw thread that well head was cut, lacked splicing sleeve, prevent that the lawless person from sawing, cut, smashing wellhead assembly, solid and reliable, the theftproof performance height is scrapped the high safety of oil-water well.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present utility model.
As shown in drawings, the oil-water well well head shut-in well device of the utility model, on described shut-in well device, hard shell 3 is arranged, installation tube 2 is installed in the hard shell, by screw thread cover body 1 is installed in the installation tube, the upper inner of cover body is fixed with valve seat 8, valve base cavity communicates with the hole 10 on cover body top, the valve seat outside also has sleeve 7 to be fixed on the cover body, the sleeve outside is equipped with housing 5 by screw thread, spring 6 is installed in the housing, steel ball 9 is installed between spring and the valve seat, lower housing portion has another hole 4.
This shut-in well device in use, the lower end of installation tube is welded on the sleeve pipe after well head is cut,, again hard shell is covered on the outside of installation tube then with in the installation tube of packing into such as cover body, the lower end of hard shell is welded on the sleeve pipe, thereby this shut-in well device is fixed on the well head.After this, also can be on this shut-in well device the sealing cement mortar.Steel ball is stuck in the valve seat under the effect of spring, play in the well head sleeve pipe to the plugging action of last effluent air, liquid.Hard shell can be made with the hard steel, and anti-sawing, the anti-ability of pounding are strong, can prevent effectively that the lawless person from destroying.
Claims (1)
1, oil-water well well head shut-in well device, it is characterized in that, hard shell (3) is arranged on described shut-in well device, installation tube (2) is installed in the hard shell, by screw thread cover body (1) is installed in the installation tube, the upper inner of cover body is fixed with valve seat (8), valve base cavity communicates with the hole (10) on cover body top, the valve seat outside also has sleeve (7) to be fixed on the cover body, the sleeve outside is equipped with housing (5) by screw thread, spring (6) is installed in the housing, steel ball (9) is installed between spring and the valve seat, lower housing portion has another hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202265581U CN201306144Y (en) | 2008-12-08 | 2008-12-08 | Wellhead sealing device for oil-water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202265581U CN201306144Y (en) | 2008-12-08 | 2008-12-08 | Wellhead sealing device for oil-water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306144Y true CN201306144Y (en) | 2009-09-09 |
Family
ID=41098611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202265581U Expired - Fee Related CN201306144Y (en) | 2008-12-08 | 2008-12-08 | Wellhead sealing device for oil-water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306144Y (en) |
-
2008
- 2008-12-08 CN CNU2008202265581U patent/CN201306144Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20100108 |