CN202249904U - Oilfield wellhead with protection function - Google Patents
Oilfield wellhead with protection function Download PDFInfo
- Publication number
- CN202249904U CN202249904U CN2011204085208U CN201120408520U CN202249904U CN 202249904 U CN202249904 U CN 202249904U CN 2011204085208 U CN2011204085208 U CN 2011204085208U CN 201120408520 U CN201120408520 U CN 201120408520U CN 202249904 U CN202249904 U CN 202249904U
- Authority
- CN
- China
- Prior art keywords
- ball
- wellhead
- control valve
- blow
- oil
- 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 discloses an oilfield wellhead with a protection function, and belongs to the technical field of oil recovery equipment. The oilfield wellhead is characterized in that: the top of the wellhead is provided with a blow-out prevention cavity, and a floating ball is arranged in the blow-out prevention cavity; when a polished rod is broken due to faults, the floating ball can timely block a polished rod through hole, so that an effect of preventing blow-out is achieved; a deviation adjusting ball is arranged at the lower end of a packing box, and the packing box can produce angle displacement relative to the central line of a wellhead main body through the deviation adjusting ball, so that an effect of preventing eccentric abrasion is achieved by adjusting the angle of the deviation adjusting ball; a gas control valve is arranged between an oil pipe and a sleeve; the gas control valve consists of a liquid inlet, a gas inlet, a liquid discharge hole and a central pipe; a spring and a valve ball are arranged in the central pipe; the part close to the valve ball is provided with a special discharge hole for natural gas; and the gas control valve can prevent the sleeve from refluxing and prevent the oil pipe from suppressing a pump.
Description
Technical field
The utility model belongs to the oil production equipment technical field, relates to a kind of oil well mouth, relates in particular to a kind of oil field shaft mouth that installs protection additional.
Background technology
At present, to be still with beam pumping unit be main to the oil production equipment that uses of each oil field at home, and its traditional supporting well head when the polished rod failover is broken blowout can take place in process of production sometimes; When pumping unit horsehead suspension point and well head misalignment, can produce eccentric wear; Conventional well muzzle gas reclaim to adopt oil pipe and sleeve pipe connected mode, is easy to generate the sleeve pipe backflow, oil pipe is suppressed pump, and artificial venting can not in time be operated.
The utility model content
The purpose of the utility model is: a kind of oil field shaft mouth that installs protection additional is provided.
The technical scheme of the utility model is:
Be provided with anti-spray chamber topmost at well head, be provided with the ball float of proportion less than oil well institute production fluid body in the said anti-spray chamber, said ball float external diameter passes through the hole greater than polished rod; Be provided with the tuningout spheroid in the packing box lower end, said tuningout spheroid can make packing box and well head main center line produce angle displacement; Between oil pipe and sleeve pipe, control valve is housed, said control valve is made up of inlet opening, air inlet, outage and central tube, and spring, valve ball are housed in the said central tube, has the special-purpose tap of natural gas near said valve ball position.
The beneficial effect of the utility model is:
When the polished rod failover is broken, fluid can spill in the well head anti-spray chamber topmost through the packing box centre bore, and ball float is held up, and ball float can in time be blocked polished rod through the hole, reaches the effect that stops blowout;
When pumping unit horsehead suspension point and well head misalignment, through the angle position of adjusting the tuningout spheroid upright projection of horse head suspension point and well head center are matched, reach the effect of anti-eccentric wear;
In control valve, when admission pressure during greater than inlet hydraulic, gas promotes valve ball; Pressure is passed to spring, make length of spring compressed, move behind the central tube; Expose gas channel; Gas changes outage over to through the special-purpose tap of natural gas, when inlet hydraulic during greater than admission pressure ball seat close, stop sleeve pipe to reflux.
Description of drawings
Figure one is the utility model sketch map.
1 for polished rod passes through the hole among the figure, and 2 are anti-spray chamber, and 3 is ball float, and 4 is packing box, and 5 is the tuningout spheroid, and 6 is central tube, and 7 is spring, and 8 is valve ball, and 9 is outage, and 10 is the special-purpose tap of natural gas, and 11 is inlet opening, and 12 is air inlet.
The specific embodiment
Do and further describe below in conjunction with a pair of the utility model of figure:
When the polished rod failover is broken, fluid can spill in the well head anti-spray chamber 2 topmost through packing box 4 centre bores, and ball float 3 is held up, and ball float 3 can in time be blocked polished rod through hole 1, reaches the effect that stops blowout; When pumping unit horsehead suspension point and well head misalignment, through the angle position of adjusting tuningout spheroid 5 upright projection of horse head suspension point and well head center are matched, reach the effect of anti-eccentric wear; When air inlet 12 pressure during greater than inlet opening 11 pressure, gas promotes valve ball 8, and pressure is passed to spring 7; Make spring 7 compressions; Move behind the central tube 6, expose gas channel, gas changes outage 9 over to through the special-purpose tap 10 of natural gas; When inlet opening 11 pressure during greater than air inlet 12 pressure ball seat close, stop sleeve pipe to reflux.
Claims (1)
1. oil field shaft mouth that installs protection additional is characterized in that:
A, be provided with anti-spray chamber topmost, be provided with the ball float of proportion in the anti-spray chamber less than oil well institute production fluid body at well head;
B, be provided with the tuningout spheroid in the packing box lower end;
C, between oil pipe and sleeve pipe, control valve is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204085208U CN202249904U (en) | 2011-10-25 | 2011-10-25 | Oilfield wellhead with protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204085208U CN202249904U (en) | 2011-10-25 | 2011-10-25 | Oilfield wellhead with protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249904U true CN202249904U (en) | 2012-05-30 |
Family
ID=46111163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204085208U Expired - Fee Related CN202249904U (en) | 2011-10-25 | 2011-10-25 | Oilfield wellhead with protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075124A (en) * | 2011-10-25 | 2013-05-01 | 季会军 | Oil field wellhead with protection installation |
-
2011
- 2011-10-25 CN CN2011204085208U patent/CN202249904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075124A (en) * | 2011-10-25 | 2013-05-01 | 季会军 | Oil field wellhead with protection installation |
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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: 20120530 Termination date: 20141025 |
|
| EXPY | Termination of patent right or utility model |