CN104806190B - A kind of wellhead blowout preventer - Google Patents
A kind of wellhead blowout preventer Download PDFInfo
- Publication number
- CN104806190B CN104806190B CN201510224741.2A CN201510224741A CN104806190B CN 104806190 B CN104806190 B CN 104806190B CN 201510224741 A CN201510224741 A CN 201510224741A CN 104806190 B CN104806190 B CN 104806190B
- Authority
- CN
- China
- Prior art keywords
- polished rod
- blowout preventer
- ball sealer
- rod
- ball
- 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.)
- Active
Links
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000005457 optimization Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 201000004384 Alopecia Diseases 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
- 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
- 210000004907 gland Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 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 kind of wellhead blowout preventer, on the blowout prevention box of polished rod sealer, including body, polished rod passes through body, body interior is additionally provided with the ball sealer that can prop up polished rod hole in body, the outside of body is provided with the thrust device for being against polished rod lateral surface, and thrust device can promote ball sealer to be against in intrinsic smooth rod aperture in light rod-broken.The wellhead blowout preventer can not only solve to be blocked in time after light rod-broken in pumpingh well, moreover it is possible to reduce the pollution that oil gas landing is caused.
Description
Technical field
The present invention relates to a kind of wellhead blowout preventer, more particularly to a kind of blowout preventer dress in pumping unit with pole
Put.
Background technology
It is to influence oil field normally one of principal element of production that pumping well polish rod breaks de-.Taped the latent power power recently as oil field
Continue to increase, oil pump more under it is deeper, roofbolt load is increasing so that the disconnected de- well of polished rod of pumping well is continuously increased, and gives
Safety and environmental protection and the well control work of oil extraction operation bring greatly harm, and therewith, treatment cost is also increasing year by year.
Polished rod of pumping well in long-term reciprocal pumping motion process, the stress concentration at stress and optical-rod clamp by bending
Exchange interaction, blind crack is often produced in polished rod high stress point, micro-crack opening and closing repeatedly under pulsating load effect, along should
Power axis vertical plane direction grows, until surplus material is not enough to sustained load and produces fatigue fracture.For example, 2015 cut
There is light rod-broken and be up to 11 wells in the well in only April, the only model such as TH12140, TK679, brought greatly to trouble free service
Well control risk, if being patrolled and examined not in time after disconnected alopecia life, easily causes well head oil and gas leakage.
The content of the invention
In order to solve problem above, the invention provides a kind of wellhead blowout preventer, the wellhead blowout preventer can not only
Blocked in time after light rod-broken in solution pumpingh well, moreover it is possible to reduce the pollution that oil gas landing is caused.
To achieve these goals, the invention provides a kind of wellhead blowout preventer, installed in the blowout prevention of polished rod sealer
On box, including body, polished rod passes through body, and body interior is additionally provided with the ball sealer that can prop up polished rod hole in body, body
Outside is provided with the thrust device for being against polished rod lateral surface, and thrust device can promote ball sealer to be against in body in light rod-broken
Light rod aperture on.
Used as further optimization of the invention, being formed with the middle part of body can pass through the polished rod passage of polished rod, the side of body
Portion is formed with the resilient channels communicated with polished rod passage, and elastic device is provided with resilient channels；Thrust device is included and is against
Directive wheel on polished rod lateral surface, directive wheel connects one end of elastic device, and the other end of elastic device is against there is ball sealer；Light
When bar is disconnected de-, directive wheel loses polished rod support, drives elastic device to be moved near the direction of polished rod, and elastic device flicks sealing
Ball, ball sealer is dropped into polished rod passage, to prop up the opening of polished rod passage.
Used as further optimization of the invention, elastic device includes elastic draw bar, spring is provided with elastic draw bar, elasticity
One end connection directive wheel of pull bar, other end connection can prop up the thrust ball seat of ball sealer, and thrust ball seat is under the action of the spring
Along the axially reciprocating of resilient channels.
Used as further optimization of the invention, the top open part of polished rod passage is provided with the hemisphere that can coordinate with ball sealer
Shape ball seat, during light rod-broken, ball sealer is withstood in hemispherical ball seat in the polished rod passage under the pressure of liquid.
Used as further optimization of the invention, the end of resilient channels is provided with plug, to prevent elastic device from elasticity
Abjection in passage.
As further optimization of the invention, sealing film is installed between plug and elastic draw bar, with seal plug with
Elastic draw bar.
Used as further optimization of the invention, directive wheel is connected by support bar with elastic device.
Used as further optimization of the invention, support bar is two stock compositions for forming right angle connection.
Used as further optimization of the invention, wellhead blowout preventer is connected through a screw thread with blowout prevention box, wellhead blowout preventer
Sealing ring is installed between blowout prevention box.
Used as further optimization of the invention, ball sealer is resin seal ball.
It is of the invention to be had an advantage in that,
(1) after polished rod of pumping well occurs disconnected taking off into well, itself spring tension can be run through and send resin seal ball
Enter leakage path, resin balls enter at hemispherical seal receptacle under head of liquid promotion, so as to realize the effect of sealing and plugging；
(2) generation of the gas blowout accident after light rod-broken can effectively be prevented；
(3) pollution that oil gas landing is caused is reduced, environment protection treating expense is reduced.
Brief description of the drawings
Fig. 1 is the structural representation of wellhead blowout preventer in the present invention.
Specific embodiment
Below, the present invention is specifically described by exemplary implementation method.It should be appreciated, however, that not entering one
In the case of step narration, element, structure and features in an implementation method can also be advantageously incorporated into other embodiment
In.
It is the structural representation of wellhead blowout preventer in the present invention, as shown in figure 1, blowout preventer of the invention referring to Fig. 1
Device, on the blowout prevention box of polished rod sealer, wellhead blowout preventer of the invention includes body 13, and polished rod 10 can be through this
Body 13, being additionally provided with inside body 13 can prop up the ball sealer 1 of light rod aperture in body 13, and the outside of body 13 is provided with and is against light
The thrust device of the lateral surface of bar 10, thrust device can promote ball sealer to be against in intrinsic smooth rod aperture in light rod-broken.
The middle part of body 13 is formed with the polished rod passage that can pass through polished rod 10, and the sidepiece of body 13 is formed with and polished rod passage
The resilient channels for communicating, are provided with elastic device in resilient channels.Above-mentioned thrust device includes being against leading for the lateral surface of polished rod 10
To wheel 9, directive wheel 9 connects one end of elastic device, the other end of elastic device against there is ball sealer 1, the diameter of the ball sealer 1
Not less than the diameter of polished rod passage, in order to play blowout prevention effect；During light rod-broken, directive wheel 9 loses polished rod and supports, and
It is downward-sloping in the presence of directive wheel 9 gravity itself, then drive elastic device to be moved near the direction of polished rod, elastic device bullet
Ball sealer 1 is opened, the ball sealer 1 is preferably the resin seal ball of lighter weight, so, even if the stress of very little can also promote sealing
Ball 1, and the use of resin material is conducive to bearing high pressure, corrosion-resistant etc.；In ball sealer 1 drops into polished rod passage, because of polished rod
The bottom of passage is liquid in well, and under fluid pressure in well, ball sealer 1 is moved upwards, until the opening of polished rod passage is propped up,
So as to realize the quick closure after light rod-broken, herein, well head pressure is higher, and its sealing effectiveness is better.
With continued reference to accompanying drawing, above-mentioned elastic device includes elastic draw bar 5, and spring 3 is provided with elastic draw bar 5, and elasticity is drawn
One end connection directive wheel 9 of bar 5, other end connection can prop up the thrust ball seat 2 of ball sealer 1, work of the thrust ball seat 2 in spring 3
With the lower axially reciprocating along resilient channels, and then realize promoting the effect of ball sealer 1.Herein it should be noted that elasticity
Spring 3 on pull bar 5 in its natural state when, the farthest of ball sealer 1 is in the junction of resilient channels and polished rod passage.
In order to realize more preferable blowout prevention effect, the top open part of polished rod passage is provided with can coordinate with ball sealer 1 half
Spherical ball seat 11, during light rod-broken, ball sealer 1 is withstood in hemispherical ball seat 11, and ball sealer 1 is matched somebody with somebody with the sealing of hemispherical ball seat 11
Close, make liquid in well be difficult to spray.
In order to prevent elastic device from deviating from from resilient channels, the end of resilient channels is provided with plug 6, and the plug 6 is excellent
Elect spring plug as.Sealing film 4 is installed between plug 6 and elastic draw bar 5, can be two seals film, to seal plug
With elastic draw bar, oil and gas leakage is prevented, while also making to be not susceptible to dislocation between plug 6 and elastic draw bar 5.
Directive wheel 9 is connected by support bar 8 with elastic device, and used as one embodiment, support bar 8 can be two formation one
Determine the stock composition of angle connection, the angle is preferably right angle, connected using two mutually angled stocks, be conducive to by
The centre-of gravity shift of support bar 8 so when directive wheel 9 departs from polished rod 10, is more easy to band dynamic elasticity to the direction nearer apart from polished rod
Device is to centroclinal, so that ball sealer realizes the cooperation with hemispherical ball seat faster；While elastic draw bar 5 and support bar 8
Between can be connected by bolt 7 so that the connection between elastic draw bar 5 and support bar 8 is more firm.
For the more specific description present invention, illustrated below in conjunction with the course of work of the invention：
Wellhead blowout preventer of the invention is arranged on blowout prevention box, the gland at the top of blowout prevention box need to remove herein, well head
Blowout hookup can be connected through a screw thread with blowout prevention box, the sealing ring of best mounting O-shaped between wellhead blowout preventer and blowout prevention box
12, make both better seals, prevent when in use, liquid sprays from junction in well；In normal state, directive wheel is in branch
The outside portion of polished rod is resisted against in the presence of strut, directive wheel is balanced because of the active force by polished rod；When light rod-broken,
Directive wheel loses the active force of polished rod, and the support bar center of gravity constituted by two bars for forming certain angle therefore is led between two bars
Inclined obliquely under gravity to wheel, so that drive elastic device to be moved to polished rod direction, the sealing of elastic device end
Ball is pushed into polished rod passage, and in the presence of liquid in polished rod passage, withstands on the hemispherical sealing of polished rod channel roof
On seat, polished rod passage is blocked, be so achieved that the quick closure after light rod-broken.
It is appreciated that the present invention is described by some embodiments, and what those skilled in the art knew, do not taking off
In the case of the spirit and scope of the present invention, various changes or equivalence replacement can be carried out to these features and embodiment.Separately
Outward, under the teachings of the present invention, these features and embodiment can be modified with adapt to particular situation and material without
The spirit and scope of the present invention can be departed from.Therefore, the present invention is not limited to the particular embodiment disclosed, and is fallen with
Embodiment in the range of claims hereof is belonged in the range of of the invention protection.
Claims (6)
1. a kind of wellhead blowout preventer, on the blowout prevention box of polished rod sealer, it is characterised in that including body (13), light
Bar (10) is additionally provided with the ball sealer (1) that can prop up the interior light rod aperture of body (13), body through body (13) inside body (13)
(13) outside is provided with the thrust device for being against polished rod (10) lateral surface, and thrust device can promote ball sealer in light rod-broken
It is against in intrinsic smooth rod aperture；
Being formed with the middle part of body (13) can pass through the polished rod passage of polished rod (10), and the sidepiece of body (13) is formed with and leads to polished rod
The resilient channels that road is communicated, are provided with elastic device in resilient channels；Thrust device is included and is against leading on polished rod lateral surface
To wheel (9), directive wheel (9) connects one end of elastic device, and the other end of elastic device is against there is ball sealer (1)；Light rod-broken
When, directive wheel (9) loses polished rod support, drives elastic device to be moved near the direction of polished rod, and elastic device flicks ball sealer
(1) during, ball sealer (1) drops into polished rod passage, to prop up the opening of polished rod passage；
Elastic device includes elastic draw bar (5), and spring (3), one end connection of elastic draw bar (5) are provided with elastic draw bar (5)
Directive wheel (9), other end connection can prop up the thrust ball seat (2) of ball sealer (1), and thrust ball seat (2) is in the presence of spring (3)
Along the axially reciprocating of resilient channels；
Directive wheel (9) is connected by support bar (8) with elastic device, and support bar (8) is two stock groups for forming right angle connection
Into.
2. wellhead blowout preventer according to claim 1, it is characterised in that the top open part of polished rod passage is provided with can be with
The hemispherical ball seat (11) that ball sealer (1) coordinates, during light rod-broken, ball sealer (1) is pushed up in the polished rod passage under the pressure of liquid
In hemispherical ball seat (11).
3. wellhead blowout preventer according to claim 1, it is characterised in that the end of resilient channels is provided with plug (6), with
Prevent elastic device from deviating from from resilient channels.
4. wellhead blowout preventer according to claim 3, it is characterised in that be provided between plug (6) and elastic draw bar (5)
Sealing film (4), to seal plug and elastic draw bar.
5. wellhead blowout preventer according to claim 1, it is characterised in that wellhead blowout preventer is connected with blowout prevention box by screw thread
Connect, sealing ring (12) is installed between wellhead blowout preventer and blowout prevention box.
6. wellhead blowout preventer according to claim 1, it is characterised 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 CN104806190A (en) | 2015-07-29 |
| CN104806190B true 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) |
Families Citing this family (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 |
| 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 |
| 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 |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806190A (en) | 2015-07-29 |
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