CN2616674Y - Gas-injection oil-production static well head valve - Google Patents
Gas-injection oil-production static well head valve Download PDFInfo
- Publication number
- CN2616674Y CN2616674Y CN 03211111 CN03211111U CN2616674Y CN 2616674 Y CN2616674 Y CN 2616674Y CN 03211111 CN03211111 CN 03211111 CN 03211111 U CN03211111 U CN 03211111U CN 2616674 Y CN2616674 Y CN 2616674Y
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- China
- Prior art keywords
- valve
- utility
- gas injection
- oil
- 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
The utility model relates to a fixed head valve for gas injection and oil production in an oilfield, which uses a right angle structure with a big drift diameter and a small volume. The utility model adopts the technical proposal that: high temperature resistance materials are fully used, bidirectional sealing is used in a valve flap and the sealing surface is sealed by a steel taper wire. Sealing elements in rotary parts of the valve can be changed in working time whenever. The valve in a major overhaul arranged at the wellhead is always in a sealing state. The utility model has the advantages of a long period of usage for whole using, simple structure, low cost of maintenance and oil production as well as being applied for the oil well gas injection and oil production widely.
Description
Technical field:
The utility model relates to a kind of oilfield gas injection motionless head valve that recovers the oil, also can be as the valve on other device.
Background technology
Oilfield gas injection, the used valve of production wellhead are old-fashioned flashboard type, ball type valve door at present, owing to be subjected to the restriction of structure and encapsulant, above-mentioned two kinds the valve volume is big, passage is little, the elevated-temperature seal poor performance, it is low often to change the potted component whole service life, the maintenance cost height improves cost for oil production.
The utility model content
In order to overcome existing old-fashioned valve owing to be subjected to the restriction of structure and encapsulant, the valve volume is big, passage is little, the elevated-temperature seal poor performance, and whole service life is low, the deficiency that maintenance cost is high, the utility model provides a kind of gas injection motionless head valve that recovers the oil, this valve is owing to adopt the right-angle type structure, all adopt exotic material, thereby latus rectum is reasonable, volume is little, sealing surface adopts the rigidity linear sealing to guarantee elevated-temperature seal intensity, and whole service life is long, and maintenance cost is low.
The technical scheme that its technical problem that solves the utility model adopts is: the design of this valve is to adopt the right-angle type structure, and latus rectum is reasonable, volume is little, all adopts exotic material, and sealing surface adopts the rigidity linear sealing to guarantee elevated-temperature seal intensity; This valve has also adopted two way seal simultaneously, it can change the potted component of rotation place at work at any time, thereby, improved the whole service life of this valve, this valve is in sealing state all the time in the overhaul phase of wellhead assembly, does not reduce cost for oil production thereby maintenance cost does not take place.This valve is that conical valve is distinguished end and the valve body screwed connection that is enclosed within cylinder-shaped valve rod, again joint ring is put into the circular groove of valve stem nut, cylindrical gland is placed on valve stem nut top with adjusting screw, and the form right angle formula gas injection motionless head valve that recovers the oil.
The beneficial effects of the utility model are these valves owing to adopt the right-angle type structure, and latus rectum is reasonable, and volume is little, all adopt exotic material, adopt two way seal, sealing surface has guaranteed elevated-temperature seal intensity with the rigidity linear sealing, improved the whole service life of valve, cost for oil production is low, simple in structure.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model overall structure schematic diagram.
Among the figure 1, valve body, 2, valve distinguishes, 3, valve rod, 4, valve stem nut, 5, joint ring, 6, gland, 7, adjust screw.
The specific embodiment
In the embodiment shown in fig. 1, this valve is that taper shape is adopted two way seal, sealing surface distinguishes that with the valve of rigidity tapering linear sealing 2 are enclosed within the end and valve body 1 screwed connection of cylinder-shaped valve rod 3, joint ring 5 is put into the circular groove of valve stem nut 4, the top that cylindrical gland 6 is placed on valve stem nut 4 is with adjusting the fixing and form right angle formula gas injection of the screw 7 motionless head valve that recovers the oil again.
Claims (1)
1, a kind of oilfield gas injection motionless head valve that recovers the oil is characterized in that: conical valve is distinguished that (2) are enclosed within the end and valve body (1) screwed connection of cylinder-shaped valve rod (3), joint ring (5) is put into the circular groove of valve stem nut (4), the top that cylindrical gland (6) is placed on valve stem nut (4) is with adjusting the fixing and form right angle formula gas injection of screw (7) the motionless head valve that recovers the oil again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211111 CN2616674Y (en) | 2003-01-21 | 2003-01-21 | Gas-injection oil-production static well head valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211111 CN2616674Y (en) | 2003-01-21 | 2003-01-21 | Gas-injection oil-production static well head valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2616674Y true CN2616674Y (en) | 2004-05-19 |
Family
ID=34241639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03211111 Expired - Fee Related CN2616674Y (en) | 2003-01-21 | 2003-01-21 | Gas-injection oil-production static well head valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2616674Y (en) |
-
2003
- 2003-01-21 CN CN 03211111 patent/CN2616674Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |