CN204591202U - A kind of wellhead blowout preventer - Google Patents
A kind of wellhead blowout preventer Download PDFInfo
- Publication number
- CN204591202U CN204591202U CN201520285608.3U CN201520285608U CN204591202U CN 204591202 U CN204591202 U CN 204591202U CN 201520285608 U CN201520285608 U CN 201520285608U CN 204591202 U CN204591202 U CN 204591202U
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- CN
- China
- Prior art keywords
- blowout preventer
- polished rod
- wellhead blowout
- elastic device
- directive wheel
- 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 kind of wellhead blowout preventer, be arranged on the blowout prevention box of polished rod sealer, comprise body, the middle part of body is formed can through the polished rod passage of polished rod, the sidepiece of body is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels; The outer setting of body has the directive wheel being against polished rod lateral surface, and directive wheel connects one end of elastic device, and the other end of elastic device is against there being ball sealer.This wellhead blowout preventer can not only solve in pumpingh well and block in time after light rod-broken, can also reduce oil gas and land the pollution caused.
Description
Technical field
The utility model relates to a kind of wellhead blowout preventer, particularly relates to a kind of wellhead blowout preventer in pumping unit with pole.
Background technology
It is affect one of principal element that oil field normally produces that pumping well polish rod breaks de-.In recent years along with taping the latent power continuing to increase of power in oil field, oil pump more under darker, roofbolt load is increasing, the disconnected de-well of polished rod of pumping well is constantly increased, bring great harm to the safety and environmental protection of oil extraction operation and well control work, thereupon, treatment cost is also increasing year by year.
Polished rod of pumping well is in long-term back and forth pumping motion process, the stress at stress and optical-rod clamp place concentrates exchange interaction by bending, often blind crack is produced in polished rod high stress point, micro-crack opening and closing repeatedly under pulsating load effect, along the growth of stress axis vertical plane direction, until surplus material is not enough to sustained load and produces fatigue fracture.Such as, cut-off April in 2015, only the well generation light rod-broken of the model such as TH12140, TK679 is up to 11 wells, brings great well control risk to trouble free service, if disconnected alopecia raw after patrols and examines not in time, very easily cause well head oil gas leakage.
Summary of the invention
In order to overcome the above problems, the utility model provides a kind of wellhead blowout preventer, and this wellhead blowout preventer can not only solve in pumpingh well and block in time after light rod-broken, can also reduce oil gas and land the pollution caused.
To achieve these goals, the utility model provides a kind of wellhead blowout preventer, be arranged on the blowout prevention box of polished rod sealer, comprise body, the middle part of body is formed can through the polished rod passage of polished rod, the sidepiece of body is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels; The outer setting of body has the directive wheel being against polished rod lateral surface, and directive wheel connects one end of elastic device, and the other end of elastic device is against there being ball sealer; During light rod-broken, directive wheel loses polished rod and supports, and drive elastic device to move to the direction near polished rod, elastic device flicks ball sealer, and ball sealer drops in polished rod passage, to prop up the opening of polished rod passage.
As further optimization of the present utility model, elastic device comprises elastic draw bar, and elastic draw bar is provided with spring, and one end of elastic draw bar connects directive wheel, the other end connects the thrust ball seat that can prop up ball sealer, and thrust ball seat is under the action of the spring along the axially reciprocating of resilient channels.
As further optimization of the present utility model, the top open part of polished rod passage is provided with the hemispherical ball seat that can coordinate with ball sealer, during light rod-broken, withstands in hemispherical ball seat under the pressure of ball sealer liquid in polished rod passage.
As further optimization of the present utility model, the end of resilient channels is provided with plug, deviates from resilient channels to prevent elastic device.
As further optimization of the present utility model, sealing film is installed between plug and elastic draw bar, to seal plug and elastic draw bar.
As further optimization of the present utility model, directive wheel is connected with elastic device by support bar.
As further optimization of the present utility model, support bar is two stock compositions forming right angle and connect.
As further optimization of the present utility model, wellhead blowout preventer and blowout prevention box are threaded connection, and are provided with sealing ring between wellhead blowout preventer and blowout prevention box.
As further optimization of the present utility model, ball sealer is resin seal ball.
As further optimization of the present utility model, sealing ring is O RunddichtringO.
The advantage that the utility model has is,
(1) when polished rod of pumping well occur disconnected take off well after, by self spring tension, resin seal ball can be sent into leakage path rapidly, resin balls enters hemispherical seal receptacle place under head of liquid promotes, thus realizes the effect of sealing and plugging;
(2) generation of the gas blowout accident after light rod-broken can effectively be prevented;
(3) reduce oil gas and land the pollution caused, reduce environment protection treating expense.
Accompanying drawing explanation
Fig. 1 is the structural representation of wellhead blowout preventer in the utility model.
Detailed description of the invention
Below, by exemplary embodiment, the utility model is specifically described.But should be appreciated that element, structure and feature in an embodiment also can be attached in other embodiments valuably when not describing further.
See Fig. 1, it is the structural representation of wellhead blowout preventer in the utility model, as shown in Figure 1, wellhead blowout preventer of the present utility model, be arranged on the blowout prevention box of polished rod sealer, wellhead blowout preventer of the present utility model comprises body 13, and the middle part of body 13 is formed can through the polished rod passage of polished rod 10, the sidepiece of body 13 is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels.
The outer setting of body 13 has the directive wheel 9 being against polished rod 10 lateral surface, and directive wheel 9 connects one end of elastic device, and the other end of elastic device is against there being ball sealer 1, and the diameter of sealing ball 1 is consistent with the diameter of polished rod passage, so that play blowout prevention effect; During light rod-broken, directive wheel 9 loses polished rod and supports, and it is downward-sloping under the effect of the gravity of directive wheel 9 own, elastic device is then driven to move to the direction near polished rod, elastic device flicks ball sealer 1, and sealing ball 1 is preferably the resin seal ball of lighter weight, like this, stressedly also can promote ball sealer 1 even if very little, and the use of resin material is conducive to bearing high pressure, corrosion-resistant etc.; When ball sealer 1 drops in polished rod passage, because the bottom of polished rod passage is liquid in well, in well under fluid pressure, ball sealer 1 moves upward, until prop up the opening of polished rod passage, thus realizes the quick closure after light rod-broken, herein, well head pressure is higher, and its sealing effectiveness is better.
Continue see accompanying drawing, above-mentioned elastic device comprises elastic draw bar 5, elastic draw bar 5 is provided with spring 3, one end of elastic draw bar 5 connects directive wheel 9, the other end connects the thrust ball seat 2 that can prop up ball sealer 1, thrust ball seat 2 along the axially reciprocating of resilient channels, and then realizes promoting the effect of ball sealer 1 under the effect of spring 3.It should be noted that herein, the spring 3 on elastic draw bar 5 in its natural state time, ball sealer 1 farthest is in the junction of resilient channels and polished rod passage.
In order to realize better blowout prevention effect, the top open part of polished rod passage is provided with the hemispherical ball seat 11 that can coordinate with ball sealer 1, and during light rod-broken, ball sealer 1 withstands in hemispherical ball seat 11, ball sealer 1 is sealed and matched with hemispherical ball seat 11, and liquid in well is not easily sprayed.
In order to prevent elastic device from deviating from resilient channels, the end of resilient channels is provided with plug 6, and this plug 6 is preferably spring plug.Be provided with between plug 6 and elastic draw bar 5 and seal film 4, can be two seals film, to seal plug and elastic draw bar, prevent oil and gas leakage, also make not easily to misplace between plug 6 and elastic draw bar 5 simultaneously.
Directive wheel 9 is connected with elastic device by support bar 8, as an embodiment, support bar 8 can be two stock compositions forming certain angle and connect, this angle is preferably right angle, use two stocks being mutually certain angle to connect, be conducive to by the centre-of gravity shift of support bar 8 to the direction nearer apart from polished rod, like this when directive wheel 9 departs from polished rod 10, more easily drive elastic device to centroclinal, realize faster and the coordinating of hemispherical ball seat to make ball sealer.
In order to more specific description the utility model, illustrate below in conjunction with the course of work of the present utility model:
Wellhead blowout preventer of the present utility model is arranged on blowout prevention box, the gland at blowout prevention box top need remove herein, wellhead blowout preventer and blowout prevention box are by being threaded, the sealing ring 12 of best mounting O-shaped between wellhead blowout preventer and blowout prevention box, make both better sealings, prevent in use, in well, liquid sprays from junction; In normal state, directive wheel is against the outside portion of polished rod, and directive wheel is balanced because of the active force being subject to polished rod; When light rod-broken, directive wheel disequilibrium power, related elastic device is to polished rod side to movement under gravity, the ball sealer of elastic device end is pushed in polished rod passage, and in polished rod passage liquid effect under, withstand on the hemispherical seal receptacle of polished rod channel roof, to be blocked by polished rod passage, so just achieve the quick closure after light rod-broken.
Be appreciated that the utility model is described by some embodiments, those skilled in the art know, when not departing from spirit and scope of the present utility model, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under instruction of the present utility model, can modify to adapt to concrete situation and material to these characteristic sum embodiments and spirit and scope of the present utility model can not be departed from.Therefore, the utility model is by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs in the scope that the utility model protects.
Claims (10)
1. a wellhead blowout preventer, be arranged on the blowout prevention box of polished rod sealer, it is characterized in that, comprise body (13), the middle part of body (13) is formed with the polished rod passage that can pass polished rod (10), the sidepiece of body (13) is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels; The outer setting of body (13) has the directive wheel (9) being against polished rod (10) lateral surface, and directive wheel (9) connects one end of elastic device, and the other end of elastic device is against there being ball sealer (1).
2. wellhead blowout preventer according to claim 1, it is characterized in that, elastic device comprises elastic draw bar (5), elastic draw bar (5) is provided with spring (3), one end of elastic draw bar (5) connects directive wheel (9), the other end connects can prop up the thrust ball seat (2) of ball sealer (1), thrust ball seat (2) under the effect of spring (3) along the axially reciprocating of resilient channels.
3. wellhead blowout preventer according to claim 1, it is characterized in that, the top open part of polished rod passage is provided with the hemispherical ball seat (11) that can coordinate with ball sealer (1), during light rod-broken, withstand in hemispherical ball seat (11) under the pressure of ball sealer (1) liquid in polished rod passage.
4. wellhead blowout preventer according to claim 1, it is characterized in that, the end of resilient channels is provided with plug (6), deviates from resilient channels to prevent elastic device.
5. wellhead blowout preventer according to claim 4, is characterized in that, be provided with and seal film (4), to seal plug and elastic draw bar between plug (6) and elastic draw bar (5).
6. wellhead blowout preventer according to claim 1, it is characterized in that, directive wheel (9) is connected with elastic device by support bar (8).
7. wellhead blowout preventer according to claim 6, is characterized in that, support bar (8) is two stocks compositions forming right angles and connect.
8. wellhead blowout preventer according to claim 1, it is characterized in that, wellhead blowout preventer and blowout prevention box are threaded connection, and are provided with sealing ring (12) between wellhead blowout preventer and blowout prevention box.
9. wellhead blowout preventer according to claim 1, it is characterized in that, ball sealer (1) is resin seal ball.
10. wellhead blowout preventer according to claim 1, it is characterized in that, sealing ring (12) is O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285608.3U CN204591202U (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285608.3U CN204591202U (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591202U true CN204591202U (en) | 2015-08-26 |
Family
ID=53927367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285608.3U Expired - Fee Related CN204591202U (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591202U (en) |
-
2015
- 2015-05-05 CN CN201520285608.3U patent/CN204591202U/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 |
Granted publication date: 20150826 Termination date: 20200505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |