CN105156060B - Coiled tubing blowout preventer - Google Patents
Coiled tubing blowout preventer Download PDFInfo
- Publication number
- CN105156060B CN105156060B CN201510438705.6A CN201510438705A CN105156060B CN 105156060 B CN105156060 B CN 105156060B CN 201510438705 A CN201510438705 A CN 201510438705A CN 105156060 B CN105156060 B CN 105156060B
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- CN
- China
- Prior art keywords
- bushing
- coiled tubing
- blowout preventer
- shell
- side door
- 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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- Pressure Vessels And Lids Thereof (AREA)
- Pipe Accessories (AREA)
Abstract
When being used for oil continuous oil pipe operation the present invention relates to one kind, coiled tubing blowout preventer when with pressure, lower coiled tubing and brill with pressure, well workover.It realizes sealing bore hole annulus using the flexible deformation of rubber, meet coiled tubing it is with pressure make a trip and bore, the requirement of workover treatment.The stud of the device links together upper body and lower body, safe side door is mounted on stud, fluid cylinder connect with upper body, the connection of sleeve and fluid cylinder, shell and lower body connection, union nut and shell connect, upper bushing is mounted in sleeve, the installation of lower bushing in the housing, packing unit is mounted between upper bushing and lower bushing.The blowout preventer shortens packing unit to the distance of injection head, can prevent unstability in coiled tubing injection process；It is convenient that glue core is replaced, when blowout preventer is in operating position, that is, replaceable rubber core of lubricator, and without coiled tubing is taken out from blowout preventer.
Description
Technical field
Continuous oil when the present invention relates to a kind of for pressure of continuous oil pipe operation, lower oil pipe and brill with pressure, well workover
Pipe blowout preventer belongs to petroleum gas jet-preventing tool.
Background technology
Due to that need not be made up a joint using continuous oil pipe operation, carried out coiled tubing as connection equipment of going into the well
Brill, workover treatment are more and more common.In continuous oil pipe operation, it is often necessary to the annular space between coiled tubing and wellbore is sealed,
Due to pipe preventer installation site apart from injection head farther out, annular space is sealed using pipe preventer, in the continuous oil of bet by force
Oil pipe is easy unstability when pipe.Therefore, it is necessary to a kind of coiled tubing blowout preventers that can be directly installed below injection head, it can not only
Seal bore hole annulus, moreover it is possible to play the role of support coiled tubing, prevent tubing deformation unstability.
Coiled tubing blowout preventer makes glue core that flexible deformation occur to hold coiled tubing tightly by piston compression seal glue core
Realize the purpose of sealing annular space.Glue core and bushing in blowout preventer are vulnerable parts, in order to ensure blowout preventer in operation process
Sealing effect, it is often necessary to replace the glue core and bushing having worn out.Current coiled tubing blowout preventer, glue core and sleeve are more
It changes and needs to remove blowout preventer from injection head, replacement process is time-consuming and laborious, and security reliability is poor.
Invention content
It is an object of the invention to the brill for coiled tubing, workover treatments to provide a kind of coiled tubing blowout preventer, the shut-in well
Device is directly installed below coiled tubing injection head, is shortened packing unit the distance between to injection head, is prevented coiled tubing
Buckling unstability occurs in injection process.Safe side door is installed on the stud of blowout preventer, piston can be prevented to be opened accidentally.Envelope
It is provided with measured hole on well device shell, facilitates timing monitoring well head pressure, by adjusting shut-in well pressure, realizes reliable sealing.
It in order to achieve the above object and requires, the present invention solves this technical problem and uses following technical scheme：Continuous oil
Pipe blowout preventer be by bushing pressure cap, positioning screw, pilot bushing, sleeve, fluid cylinder, upper bushing, piston, upper body, stud,
Pressure ring prevents that convex washer, packing unit, lower bushing, primary seal circle, baffle ring, secondary seal ring, lower body, measured hole, shell, pipe connect
Nut, safe side door and clamping screw composition.It is characterized in that：Stud links together upper body and lower body, safety
Side door is mounted on stud, and fluid cylinder is connect with upper body, sleeve and fluid cylinder connect, shell and lower body connection, pipe connect spiral shell
Mother connect with shell, upper bushing is mounted in sleeve, lower bushing install in the housing, packing unit is mounted on upper bushing and lower lining
Between set.
The advantage of the invention is that：
1. coiled tubing blowout preventer is directly installed below injection head, glue core is shortened to the distance of injection head, is effectively prevented
The only buckling unstability of oil pipe；
2. using long pilot bushing, the support to oil pipe and centering effect are increased, alleviates oil pipe to packing unit
Abrasion；
3. packing unit uses split type structure, blowout preventer need not be removed, also can when coiled tubing is in blowout preventer
Easily replace packing unit；
4. being equipped with anti-convex washer above packing unit, sealing effect and the service life of glue core are improved；
5. being equipped with measured hole on shell, well head pressure can be monitored in due course；
6. there are two sealing rings for installation on shell, after primary seal circle is worn, primary seal circle is removed, secondary seal ring is moved
Move the position of primary seal circle；
7. being equipped with clamping screw on safe side door, clamping screw can prevent safe side door to be opened accidentally；
8. being equipped with baffle ring in piston, in the case where safe side door is not turned on, baffle ring can prevent piston unexpected
It opens.
Description of the drawings
The present invention will be further described below with reference to the drawings, but the invention is not limited in following embodiments.
Fig. 1 is the longitudinal sectional drawing of coiled tubing blowout preventer of the present invention.
Fig. 2 is the A-A sectional views of Fig. 1.
In figure：1. bushing pressure cap, 2. positioning screws, 3. pilot bushings, 4. sleeves, 5. fluid cylinders, 6. upper bushings, 7. pistons,
8. upper body, 9. studs, 10. pressure rings, 11. anti-convex washers, 12. packing units, 13. times bushings, 14. primary seal circles, 15.
Baffle ring, 16. secondary seal rings, 17. lower bodies, 18. measured holes, 19. shells, 20. union nuts, 21. safe side doors, 22. lockings
Bolt.
Specific implementation mode
In fig. 1 and 2, coiled tubing blowout preventer is by bushing pressure cap 1, positioning screw 2, pilot bushing 3, sleeve 4, liquid
Cylinder 5, upper bushing 6, piston 7, upper body 8, stud 9, pressure ring 10, anti-convex washer 11, packing unit 12, lower bushing 13, master
Sealing ring 14, baffle ring 15, secondary seal ring 16, lower body 17, measured hole 18, shell 19, union nut 20, safe side door 21 and lock
Tight bolt 22 forms.
Packing unit 12 is located between upper bushing 6 and lower bushing 13, and piston 7 is close in 12 outer ring of glue core, and lower bushing 13 is fixed
On shell 19, when hydraulic oil pushes 7 downlink of piston, hydraulic coupling is passed by pressure ring 10, upper bushing 6, anti-convex washer 11 respectively
It is delivered on packing unit 12, by crush seal glue core 12, so that packing unit 12 is radially being generated dilatancy, embraced to realize
The purpose of tight tubing seal annular space.It can be corresponding by adjusting by 18 timing monitoring well head pressure of measured hole after sealing annular space
Shut-in well pressure ensure the safety of shut-in well and reliable.
Using long guide frame, pilot bushing 3 and upper bushing 6 play support and centering effect to coiled tubing, that is, mitigate
Abrasion of the oil pipe to packing unit 12 also ensures that coiled tubing can bear larger injection force and unstability change is less likely to occur
Shape.
Packing unit 12 uses split type structure, when blowout preventer be in operating position, that is, replaceable glue core, and without general
Coiled tubing takes out from blowout preventer, and safe side door 21 is opened after unclamping clamping screw 22, is passed through hydraulic oil by piston 7 to moving up
It moves to top, so that it may to be replaced to packing unit 12.
Claims (1)
1. a kind of coiled tubing blowout preventer, which is characterized in that the coiled tubing blowout preventer include bushing pressure cap, positioning screw,
Pilot bushing, sleeve, fluid cylinder, upper bushing, piston, upper body, stud, pressure ring, prevent convex washer, packing unit, lower bushing,
Primary seal circle, baffle ring, secondary seal ring, lower body, measured hole, shell, union nut, safe side door and clamping screw, wherein double
Hook bolt links together upper body and lower body, and safe side door is mounted on stud, and fluid cylinder connect with upper body, covers
Cylinder is connect with fluid cylinder, shell and lower body connect, union nut and shell connect, and upper bushing is mounted in sleeve, lower bushing is pacified
Dress in the housing, packing unit be mounted between upper bushing and lower bushing；Shell is equipped with measured hole, and pilot bushing passes through bushing
Pressure cap and positioning screw are connected to sleeve upper end, and there are two sealing rings for installation on shell, after primary seal circle is worn, remove master
Secondary seal ring is moved to the position of primary seal circle by sealing ring, and when piston is in running order, rubber glue core, which is located at, lives
Plug is internal, and safe side door is equipped on stud, and clamping screw is equipped on safe side door, can be prevented after clamping screw locking
Only safe side door is opened accidentally, and baffle ring is equipped in piston, and in the case where safe side door is not turned on, baffle ring can prevent
Piston is opened accidentally, can be to upper bushing, anti-convex washer, rubber glue core and lower bushing after piston is moved upward to the top
It is replaced；Piston is close in the outer ring of packing unit, and lower bushing is fixed on the housing, and the measured hole is for monitoring in real time
Well head pressure, the pilot bushing and the upper bushing are used for coiled tubing support and centering, and the packing unit is subdivision
Formula structure, the coiled tubing blowout preventer are directly installed below injection head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438705.6A CN105156060B (en) | 2015-07-23 | 2015-07-23 | Coiled tubing blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438705.6A CN105156060B (en) | 2015-07-23 | 2015-07-23 | Coiled tubing blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156060A CN105156060A (en) | 2015-12-16 |
| CN105156060B true CN105156060B (en) | 2018-08-24 |
Family
ID=54797062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510438705.6A Expired - Fee Related CN105156060B (en) | 2015-07-23 | 2015-07-23 | Coiled tubing blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156060B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355197A (en) * | 2016-05-10 | 2017-11-17 | 中国石油天然气股份有限公司 | Well-sealing device and shut-in well method |
| CN107989569B (en) * | 2017-12-01 | 2020-05-01 | 北京中海沃邦能源投资有限公司 | Coiled tubing dynamic seal device |
| CN109184611B (en) * | 2018-08-29 | 2020-11-06 | 徐州企润食品有限公司 | Coiled tubing four-ram blowout preventer semi-sealing device |
| RU196757U1 (en) * | 2019-12-31 | 2020-03-13 | Общество с ограниченной ответственностью "РГМ-Нефть-Газ-Сервис" | SEALER |
| RU2744288C1 (en) * | 2020-09-15 | 2021-03-04 | Юрий Иванович Князев | Long-size coupling-free pipe sealer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940464Y (en) * | 2006-08-17 | 2007-08-29 | 中国石油天然气集团公司 | Continuous oil pipe anti-blow-out box |
| US7267179B1 (en) * | 2004-02-02 | 2007-09-11 | Leo William Abel | Method for rapid installation of a smaller diameter pressure control device usable on blow out preventers |
| CN201250633Y (en) * | 2008-07-31 | 2009-06-03 | 河北华北石油荣盛机械制造有限公司 | Blowout preventer assembly of a continuous oil pipe |
| CN201786313U (en) * | 2010-09-06 | 2011-04-06 | 中国石油天然气集团公司 | Oil tube blowout control box |
| CN204984333U (en) * | 2015-07-23 | 2016-01-20 | 中国石油大学(华东) | Coiled tubing blowout preventer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120098258A1 (en) * | 2010-10-21 | 2012-04-26 | Kamran Toudehfallah | Apparatus for connecting and sealing pipelines |
-
2015
- 2015-07-23 CN CN201510438705.6A patent/CN105156060B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267179B1 (en) * | 2004-02-02 | 2007-09-11 | Leo William Abel | Method for rapid installation of a smaller diameter pressure control device usable on blow out preventers |
| CN200940464Y (en) * | 2006-08-17 | 2007-08-29 | 中国石油天然气集团公司 | Continuous oil pipe anti-blow-out box |
| CN201250633Y (en) * | 2008-07-31 | 2009-06-03 | 河北华北石油荣盛机械制造有限公司 | Blowout preventer assembly of a continuous oil pipe |
| CN201786313U (en) * | 2010-09-06 | 2011-04-06 | 中国石油天然气集团公司 | Oil tube blowout control box |
| CN204984333U (en) * | 2015-07-23 | 2016-01-20 | 中国石油大学(华东) | Coiled tubing blowout preventer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105156060A (en) | 2015-12-16 |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20200723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |