CN105156060A - Coiled tubing well sealing device - Google Patents
Coiled tubing well sealing device Download PDFInfo
- Publication number
- CN105156060A CN105156060A CN201510438705.6A CN201510438705A CN105156060A CN 105156060 A CN105156060 A CN 105156060A CN 201510438705 A CN201510438705 A CN 201510438705A CN 105156060 A CN105156060 A CN 105156060A
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- lining
- blowout preventer
- ring
- 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.)
- Granted
Links
Landscapes
- Pipe Accessories (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to a coiled tubing well sealing device used for under-pressure rising and lowering coiled tubing and under-pressure well drilling and workover during petroleum coiled tubing operation. Sealing of borehole annulus is realized by utilizing elastic deformation of rubber, and requirements on under-pressure rising and lowering of the coiled tubing and well drilling and workover are met. A double-head screw connects an upper body with a lower body, a safety side door is mounted on the double-head screw, a hydraulic cylinder is connected with the upper body, a sleeve is connected with the hydraulic cylinder, a shell is connected with the lower body, a union nut is connected with the shell, an upper bushing is mounted in the sleeve, a lower bushing is mounted in the shell, and a sealing rubber core is mounted between the upper bushing and the lower bushing. According to the well sealing device, distance from the sealing rubber core to an injection head is shortened, and instability of the coiled tubing in the process of injection can be prevented; a rubber core is convenient to replace and can be replaced without taking the coiled tubing out of the well sealing device when the well sealing device is at a working position.
Description
Technical field
The present invention relates to a kind of for coiled tubing blowout preventer when with pressure of continuous oil pipe operation, lower oil pipe and brill with pressure, well workover, belong to petroleum gas jet-preventing tool.
Background technology
Owing to adopting continuous oil pipe operation not need to make up a joint, therefore coiled tubing is carried out boring as connection device of going into the well, workover treatment is more and more general.When continuous oil pipe operation, usually needing to seal the annular space between coiled tubing and well, because pipe preventer installation site distance injection head is comparatively far away, adopting pipe preventer sealing annular space, the easy unstability of oil pipe when betting coiled tubing by force.Therefore, need a kind of coiled tubing blowout preventer that can be directly installed on below injection head, it can not only seal bore hole annulus, can also play support coiled tubing, prevents the effect of tubing deformation unstability.
Coiled tubing blowout preventer, by piston compression packing unit, makes glue core generation elastic deformation thus holds the object that coiled tubing realizes sealing annular space tightly.Glue core in blowout preventer and lining are vulnerable parts, in order to ensure the sealing effectiveness of blowout preventer in operation process, usually need to change glue core and the lining of experience wear.Current coiled tubing blowout preventer, the replacing of glue core and sleeve needs blowout preventer to pull down from injection head, and Renewal process is wasted time and energy, and security reliability is poor.
Summary of the invention
The object of the invention is to for the brill of coiled tubing, workover treatment provide a kind of coiled tubing blowout preventer, this blowout preventer is directly installed on below coiled tubing injection head, shorten the distance between packing unit to injection head, prevent from, in coiled tubing injection process, flexing unstability occurs.The stud of blowout preventer is provided with safe side door, can prevents piston from surprisingly opening.Blowout preventer housing has measured hole, facilitates timing monitoring well head pressure, by adjustment shut-in well pressure, realize positiver sealing.
In order to achieve the above object and requirement, the present invention solves this technical problem and have employed following technical scheme: coiled tubing blowout preventer is made up of lining pressure cap, dog screw, pilot bushing, sleeve, fluid cylinder, upper lining, piston, upper body, stud, pressure ring, anti-convex packing ring, packing unit, lower lining, primary seal circle, back-up ring, secondary seal ring, lower body, measured hole, housing, union nut, safe side door and lock bolt.It is characterized in that: upper body and lower body link together by stud, safe side door is arranged on stud, fluid cylinder is connected with upper body, sleeve is connected with fluid cylinder, housing is connected with lower body, union nut is connected with housing, and upper lining is arranged in sleeve, lower lining is installed in the housing, packing unit is arranged between lining and lower lining.
The invention has the advantages that:
1. coiled tubing blowout preventer is directly installed on below injection head, shortens the distance of glue core to injection head, effectively prevents the flexing unstability of oil pipe;
2. adopt long pilot bushing, add the support to oil pipe and centering effect, alleviate the wearing and tearing of oil pipe to packing unit;
3. packing unit adopts split type structure, does not need to pull down blowout preventer, also can change packing unit easily when coiled tubing is in blowout preventer;
4. anti-convex packing ring is installed above packing unit, improves sealing effectiveness and the life-span of glue core;
5. on housing, be provided with measured hole, can monitor well head pressure in good time;
6. two sealing rings are installed on housing, when after the wearing and tearing of primary seal circle, remove primary seal circle, secondary seal ring is moved to the position of primary seal circle;
7. safe side door is provided with lock bolt, lock bolt can prevent safe side door from surprisingly opening;
8. be provided with back-up ring in piston, when safe side door is not opened, back-up ring can prevent piston from surprisingly opening.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated, but the present invention is not limited to following examples.
Fig. 1 is the longitudinal sectional drawing of coiled tubing blowout preventer of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1. lining pressure cap, 2. dog screw, 3. pilot bushing, 4. sleeve, 5. fluid cylinder, 6. goes up lining, 7. piston, 8. goes up body, 9. stud, 10. pressure ring, 11. anti-convex packing rings, 12. packing units, 13. times linings, 14. primary seal circles, 15. back-up rings, 16. secondary seal rings, 17. times bodies, 18. measured holes, 19. housings, 20. union nuts, 21. safe side doors, 22. lock bolts.
Detailed description of the invention
In fig. 1 and 2, coiled tubing blowout preventer is made up of lining pressure cap 1, dog screw 2, pilot bushing 3, sleeve 4, fluid cylinder 5, upper lining 6, piston 7, upper body 8, stud 9, pressure ring 10, anti-convex packing ring 11, packing unit 12, lower lining 13, primary seal circle 14, back-up ring 15, secondary seal ring 16, lower body 17, measured hole 18, housing 19, union nut 20, safe side door 21 and lock bolt 22.
Packing unit 12 is between upper lining 6 and lower lining 13, piston 7 is close in glue core 12 outer ring, lower lining 13 is fixed on housing 19, when hydraulic oil promotion piston 7 is descending, hydraulic coupling is delivered on packing unit 12 respectively by pressure ring 10, upper lining 6, anti-convex packing ring 11, by crush seal glue core 12, make packing unit 12 produce dilatancy in radial direction, thus realize the object of holding tubing seal annular space tightly.Can pass through measured hole 18 timing monitoring well head pressure after sealing annular space, the safety guaranteeing to shunt in a well by regulating corresponding shut-in well pressure is with reliable.
Adopt long guide frame, pilot bushing 3 and upper lining 6 pairs of coiled tubings play support and centering effect, namely alleviate the wearing and tearing of oil pipe to packing unit 12, guarantee that again coiled tubing can bear larger injection force and buckling deformation is less likely to occur.
Packing unit 12 adopts split type structure, when blowout preventer is in operating position and replaceable glue core, and will not take out from blowout preventer by coiled tubing, safe side door 21 is opened after unclamping lock bolt 22, pass into after piston 7 is moved upward to top by hydraulic oil, just can change packing unit 12.
Claims (9)
1. a coiled tubing blowout preventer, comprise lining pressure cap, dog screw, pilot bushing, sleeve, fluid cylinder, upper lining, piston, upper body, stud, pressure ring, anti-convex packing ring, packing unit, lower lining, primary seal circle, back-up ring, secondary seal ring, lower body, measured hole, housing, union nut, safe side door and lock bolt, it is characterized in that: upper body and lower body link together by stud, safe side door is arranged on stud, fluid cylinder is connected with upper body, sleeve is connected with fluid cylinder, housing is connected with lower body, union nut is connected with housing, upper lining is arranged in sleeve, lower lining is installed in the housing, packing unit is arranged between lining and lower lining.
2. coiled tubing blowout preventer according to claim 1, is characterized in that: housing is provided with measured hole.
3. coiled tubing blowout preventer according to claim 1, is characterized in that: pilot bushing is connected to sleeve upper end by lining pressure cap and dog screw.
4. coiled tubing blowout preventer according to claim 1, is characterized in that: on housing, be provided with two sealing rings, when after the wearing and tearing of primary seal circle, removes primary seal circle, secondary seal ring is moved to the position of primary seal circle.
5. coiled tubing blowout preventer according to claim 1, is characterized in that: when piston is in running order, rubber glue core is positioned at internal piston.
6. coiled tubing blowout preventer according to claim 1, is characterized in that: on stud, be provided with safe side door.
7. coiled tubing blowout preventer according to claim 1, is characterized in that: safe side door is provided with lock bolt, can prevent safe side door from surprisingly opening after lock bolt locking.
8. coiled tubing blowout preventer according to claim 1, is characterized in that: be provided with back-up ring in piston, and when safe side door is not opened, back-up ring can prevent piston from surprisingly opening.
9. coiled tubing blowout preventer according to claim 1, is characterized in that: when piston is moved upward to topmost, can change upper lining, anti-convex packing ring, rubber glue core and lower lining.
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 true CN105156060A (en) | 2015-12-16 |
| CN105156060B 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) |
Cited By (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 |
| CN110725662A (en) * | 2017-12-01 | 2020-01-24 | 王鲁洋 | Device for petroleum industry |
| RU196757U1 (en) * | 2019-12-31 | 2020-03-13 | Общество с ограниченной ответственностью "РГМ-Нефть-Газ-Сервис" | SEALER |
| CN112031696A (en) * | 2018-08-29 | 2020-12-04 | 曲睿婕 | Coiled tubing four-ram blowout preventer |
| RU2744288C1 (en) * | 2020-09-15 | 2021-03-04 | Юрий Иванович Князев | Long-size coupling-free pipe sealer |
Citations (6)
| 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 |
| US20120098258A1 (en) * | 2010-10-21 | 2012-04-26 | Kamran Toudehfallah | Apparatus for connecting and sealing pipelines |
| CN204984333U (en) * | 2015-07-23 | 2016-01-20 | 中国石油大学(华东) | Coiled tubing blowout preventer |
-
2015
- 2015-07-23 CN CN201510438705.6A patent/CN105156060B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| US20120098258A1 (en) * | 2010-10-21 | 2012-04-26 | Kamran Toudehfallah | Apparatus for connecting and sealing pipelines |
| CN204984333U (en) * | 2015-07-23 | 2016-01-20 | 中国石油大学(华东) | Coiled tubing blowout preventer |
Cited By (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 |
| CN110725662A (en) * | 2017-12-01 | 2020-01-24 | 王鲁洋 | Device for petroleum industry |
| CN112031696A (en) * | 2018-08-29 | 2020-12-04 | 曲睿婕 | Coiled tubing four-ram blowout preventer |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105156060B (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105156060A (en) | Coiled tubing well sealing device | |
| EP2623707B1 (en) | Method and system for improving drilling speed by using drill string vibration | |
| CN102817575B (en) | Downhole blow-out preventer with automatic controlling and anchoring function | |
| CN101748984B (en) | Automatically controlled well blowout preventer mounted in drilling column | |
| CN102200000A (en) | Blowout preventing box of continuous oil pipe and drill rod | |
| CN203383772U (en) | Packer with safety valve | |
| CN102828719A (en) | Integrated pluralistic oil production wellhead device | |
| CN107387015A (en) | A kind of sealed casing head of HTHP MULTIPLE COMPOSITE | |
| CN204984333U (en) | Coiled tubing blowout preventer | |
| CN2512899Y (en) | High pressure oil-gas water well operation device with pressure | |
| CN203175445U (en) | Well mouth pressurization plug drilling device | |
| CN202755942U (en) | Simple blowout preventer | |
| CN201016290Y (en) | Hydraulic double-gate flat-type oil-test blow-out preventer | |
| CN204283312U (en) | A kind of downhole blow-out preventer | |
| CN105275422A (en) | Thermal recovery casing head | |
| CN202441310U (en) | Hydraulic control well closing device | |
| CN102536149B (en) | Hydraulic control well plugging device | |
| CN203321418U (en) | Near-bit downhole blowout preventer | |
| CN201818272U (en) | High-pressure oil and gas well anti-jack device | |
| CN201273172Y (en) | Novel oil well blowout-prevention drip | |
| CN201902189U (en) | Blowout preventing device | |
| CN201159065Y (en) | Blowout prevention air deflector | |
| CN103806859A (en) | Double-wedge-disc blowout prevention device with high practicability | |
| CN203742521U (en) | Improved double-ram type preventer | |
| CN203066925U (en) | Double-tube blowout preventer for oil well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20200723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |