CN104806190A - Wellhead blowout preventer - Google Patents
Wellhead blowout preventer Download PDFInfo
- Publication number
- CN104806190A CN104806190A CN201510224741.2A CN201510224741A CN104806190A CN 104806190 A CN104806190 A CN 104806190A CN 201510224741 A CN201510224741 A CN 201510224741A CN 104806190 A CN104806190 A CN 104806190A
- Authority
- CN
- China
- Prior art keywords
- polished rod
- blowout preventer
- wellhead blowout
- ball sealer
- elastic
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005457 optimization Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 201000004384 Alopecia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 231100000360 alopecia Toxicity 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a wellhead blowout preventer. The wellhead blowout preventer is mounted on a blowout prevention box of a polished rod sealer and comprises a body, wherein a polished rod passes through the body; a sealing ball capable of leaning against a polished rod hole in the body is also arranged in the body; a thrusting device leaning against the outer side surface of the polished rod is arranged outside the body; the thrusting device can be used for pushing the sealing ball to lean against the polished rod hole in the body when the polished rod is broken off. The wellhead blowout prevention has the advantages of being capable of blocking the polished rod hole in time when the polished rod in an oil-pumping well is broken off and reducing pollution caused by oil gas which falls on ground.
Description
Technical field
The present invention relates to a kind of wellhead blowout preventer, particularly relate 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 invention provides a kind of wellhead blowout preventer, 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 invention provides a kind of wellhead blowout preventer, be arranged on the blowout prevention box of polished rod sealer, comprise body, polished rod is through body, body interior is also provided with the ball sealer that can prop up polished rod hole in body, and the outer setting of body has the thrust device being against polished rod lateral surface, and thrust device can promote ball sealer and be against on intrinsic polished rod hole when light rod-broken.
As further optimization of the present invention, the middle part of body is formed can through the polished rod passage of polished rod, and the sidepiece of body is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels; Thrust device includes the directive wheel be against on 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 invention, 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 invention, 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 invention, the end of resilient channels is provided with plug, deviates from resilient channels to prevent elastic device.
As further optimization of the present invention, sealing film is installed between plug and elastic draw bar, to seal plug and elastic draw bar.
As further optimization of the present invention, directive wheel is connected with elastic device by support bar.
As further optimization of the present invention, support bar is two stock compositions forming right angle and connect.
As further optimization of the present invention, 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 invention, ball sealer is resin seal ball.
The advantage that the present invention 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 present invention.
Detailed description of the invention
Below, by exemplary embodiment, the present invention 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 present invention, as shown in Figure 1, wellhead blowout preventer of the present invention, is arranged on the blowout prevention box of polished rod sealer, and wellhead blowout preventer of the present invention comprises body 13, polished rod 10 can pass body 13, body 13 inside is also provided with the ball sealer 1 that can prop up polished rod hole in body 13, and the outer setting of body 13 has the thrust device being against polished rod 10 lateral surface, and thrust device can promote ball sealer and be against on intrinsic polished rod hole when light rod-broken.
The middle part of body 13 is formed can through the polished rod passage of polished rod 10, and the sidepiece of body 13 is formed with the resilient channels communicated with polished rod passage, is provided with elastic device in resilient channels.Above-mentioned thrust device comprises 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 not less than 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; Elastic draw bar 5 is connected by bolt 7 with between support bar 8, to make the connection between elastic draw bar 5 and support bar 8 more firm simultaneously.
In order to more specific description the present invention, illustrate below in conjunction with the course of work of the present invention:
Wellhead blowout preventer of the present invention 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 resisted against the outside portion of polished rod under the effect of support bar, and directive wheel is balanced because of the active force being subject to polished rod; When light rod-broken, directive wheel loses the active force of polished rod, because forming the support bar center of gravity of two bars formations of certain angle between two bars, therefore directive wheel tilts under gravity obliquely, thus drives elastic device to polished rod side to movement, and 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 present invention is described by some embodiments, those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under the teachings of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and can not the spirit and scope of the present invention be departed from.Therefore, the present invention 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 present invention 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), polished rod (10) is through body (13), body (13) inside is also provided with the ball sealer (1) that can prop up the interior polished rod hole of body (13), the outer setting of body (13) has the thrust device being against polished rod (10) lateral surface, and thrust device can promote ball sealer and be against on intrinsic polished rod hole when light rod-broken.
2. wellhead blowout preventer according to claim 1, it is characterized in that, 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; Thrust device includes the directive wheel (9) be against on polished rod 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); During light rod-broken, directive wheel (9) loses polished rod and supports, and drive elastic device to move to the direction near polished rod, elastic device flicks ball sealer (1), ball sealer (1) drops in polished rod passage, to prop up the opening of polished rod passage.
3. wellhead blowout preventer according to claim 2, 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.
4. wellhead blowout preventer according to claim 2, 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.
5. wellhead blowout preventer according to claim 2, it is characterized in that, the end of resilient channels is provided with plug (6), deviates from resilient channels to prevent elastic device.
6. wellhead blowout preventer according to claim 5, 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).
7. wellhead blowout preventer according to claim 2, it is characterized in that, directive wheel (9) is connected with elastic device by support bar (8).
8. wellhead blowout preventer according to claim 7, is characterized in that, support bar (8) is two stocks compositions forming right angles and connect.
9. 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.
10. wellhead blowout preventer according to claim 1, it is characterized in that, ball sealer (1) is resin seal ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224741.2A CN104806190B (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224741.2A CN104806190B (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806190A true CN104806190A (en) | 2015-07-29 |
| CN104806190B CN104806190B (en) | 2017-06-23 |
Family
ID=53691343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510224741.2A Active CN104806190B (en) | 2015-05-05 | 2015-05-05 | A kind of wellhead blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806190B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507844A (en) * | 2015-12-23 | 2016-04-20 | 西安秦森科技有限公司 | Blowout preventer of wellhead of pumping well and control system of blowout preventer |
| CN108952615A (en) * | 2018-07-04 | 2018-12-07 | 中国石油天然气股份有限公司 | Automatic sealing device |
| CN109441395A (en) * | 2019-01-08 | 2019-03-08 | 成都百胜野牛科技有限公司 | A kind of preventer and oil/gas well |
| CN114354092A (en) * | 2021-12-29 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Testing device and testing method for blowout prevention box |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
| CN115199232A (en) * | 2022-09-13 | 2022-10-18 | 胜利油田东强机电设备制造有限公司 | Polished rod sealing device with polished rod break-protection function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109713A (en) * | 1977-03-25 | 1978-08-29 | Clow Joseph Kenton | Pumping well blow-out preventer |
| US4907650A (en) * | 1987-07-24 | 1990-03-13 | Double E, Inc. | Wellhead with safety valve for pumping well |
| CN2630482Y (en) * | 2003-08-09 | 2004-08-04 | 赵健茗 | Blow-out preventer |
| CN201386533Y (en) * | 2009-03-17 | 2010-01-20 | 东营市东达机械制造有限责任公司 | Well-head angle blowout control valve |
| CN201763290U (en) * | 2010-06-30 | 2011-03-16 | 天津津港石油机械修造有限公司 | Wellhead polished rod sealer |
| CN203130017U (en) * | 2013-03-20 | 2013-08-14 | 黄泽浩 | Device for preventing crude oil from blowout |
| CN203640666U (en) * | 2013-12-10 | 2014-06-11 | 段鹏飞 | Lever type oil well broken rod blowout preventer |
-
2015
- 2015-05-05 CN CN201510224741.2A patent/CN104806190B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109713A (en) * | 1977-03-25 | 1978-08-29 | Clow Joseph Kenton | Pumping well blow-out preventer |
| US4907650A (en) * | 1987-07-24 | 1990-03-13 | Double E, Inc. | Wellhead with safety valve for pumping well |
| CN2630482Y (en) * | 2003-08-09 | 2004-08-04 | 赵健茗 | Blow-out preventer |
| CN201386533Y (en) * | 2009-03-17 | 2010-01-20 | 东营市东达机械制造有限责任公司 | Well-head angle blowout control valve |
| CN201763290U (en) * | 2010-06-30 | 2011-03-16 | 天津津港石油机械修造有限公司 | Wellhead polished rod sealer |
| CN203130017U (en) * | 2013-03-20 | 2013-08-14 | 黄泽浩 | Device for preventing crude oil from blowout |
| CN203640666U (en) * | 2013-12-10 | 2014-06-11 | 段鹏飞 | Lever type oil well broken rod blowout preventer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507844A (en) * | 2015-12-23 | 2016-04-20 | 西安秦森科技有限公司 | Blowout preventer of wellhead of pumping well and control system of blowout preventer |
| CN108952615A (en) * | 2018-07-04 | 2018-12-07 | 中国石油天然气股份有限公司 | Automatic sealing device |
| CN109441395A (en) * | 2019-01-08 | 2019-03-08 | 成都百胜野牛科技有限公司 | A kind of preventer and oil/gas well |
| CN114354092A (en) * | 2021-12-29 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Testing device and testing method for blowout prevention box |
| CN114354092B (en) * | 2021-12-29 | 2023-08-11 | 烟台杰瑞石油装备技术有限公司 | Testing device and testing method for blowout prevention box |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
| CN115199232A (en) * | 2022-09-13 | 2022-10-18 | 胜利油田东强机电设备制造有限公司 | Polished rod sealing device with polished rod break-protection function |
| CN115199232B (en) * | 2022-09-13 | 2022-11-25 | 胜利油田东强机电设备制造有限公司 | Polished rod sealing device with polished rod break-and-break protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806190B (en) | 2017-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104806190A (en) | Wellhead blowout preventer | |
| CN204311987U (en) | A kind of tubing string plug slip-type underground snubber | |
| CN103161427A (en) | Multifunctional continuous circulating safety valve | |
| CN106401528A (en) | Grouting method for drilling rod | |
| CN109667559A (en) | A kind of oil pumping machine well head energy conservation and environmental protection water-tight equipment | |
| WO2015101347A1 (en) | Floating sealing method of floating bushing sealing reciprocating impact apparatus and floating sealing reciprocating impact apparatus of sealing floating bushing of mining loader | |
| CN103899775B (en) | Hydraulic self-locking kingston valve | |
| CN204061976U (en) | Dress formula floating ball valve in one | |
| CN204591202U (en) | A kind of wellhead blowout preventer | |
| CN205154090U (en) | Transfer oblique wear -resisting packing box | |
| CN204703835U (en) | Wellhead blowout preventor | |
| CN208764526U (en) | A kind of coal mine high pressure rotary sealing connector | |
| CN213684060U (en) | Wellhead remote blowout preventer | |
| CN202850931U (en) | Blowout prevention device of oil well mouth | |
| CN205277360U (en) | Automatic blowout preventer of oil pumping motor -pumped well | |
| CN203347726U (en) | Well mouth deflection regulator | |
| CN203463062U (en) | Hydraulic universal sealer | |
| CN102418490A (en) | Sealing device | |
| CN204139998U (en) | A kind of blowout-prevention anti-falling integral type helicoid hydraulic motor | |
| CN204266972U (en) | A kind of multifunctional capping device | |
| CN204024572U (en) | Pit shaft spraying prevention switch device and oil extraction pump assembly | |
| CN202832357U (en) | Blowout preventer for rod breakage of screw pump well | |
| CN208686344U (en) | The disconnected de- automatic well-packer of pumping well polish rod | |
| CN106401514A (en) | Backpressure valve capable of achieving automatic slurry injecting | |
| CN203626692U (en) | Automatic backflow type well head sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |