CN200940464Y - Continuous oil pipe anti-blow-out box - Google Patents
Continuous oil pipe anti-blow-out box Download PDFInfo
- Publication number
- CN200940464Y CN200940464Y CN 200620119131 CN200620119131U CN200940464Y CN 200940464 Y CN200940464 Y CN 200940464Y CN 200620119131 CN200620119131 CN 200620119131 CN 200620119131 U CN200620119131 U CN 200620119131U CN 200940464 Y CN200940464 Y CN 200940464Y
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- coiled tubing
- guide way
- packing unit
- blowout prevention
- 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 - Lifetime
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Abstract
The utility model relates to a coiled tube blowout prevention box which can be used in the fields of rising and downing tubing under pressure, operation under pressure in coiled tubing operation for petroleum workover, which comprises an upper guide body (2), a sealing rubber core (3), a shell (4), a lower guide body (5), a double-acting liquid cylinder (10) etc. A gland nut (1) is connected with the shell (4), the upper guide body (2) is arranged between the gland nut (1) and the sealing rubber core (3), the sealing rubber core (3) is connected with the lower guide body (5), and the double-acting hydraulic cylinder (10) is connected with a lower-end part (12). The utility model can easily replace the sealing rubber core, shorten the distance from sealing rubber core and upper end, prevent the instability in tubing injection process and make the resetting of the liquid cylinder more reliable. The contact force between the rubber core and the tubing string is adjustable, which makes the monitoring of the wellhead pressure and the adjustment of sealing pressure convenient and timely. .
Description
Technical field
The utility model belongs to petroleum well workover coiled tubing operation band to be pressed, plays oil pipe, Operating Pressure field, specifically, is a kind of coiled tubing blowout prevention box.
Background technology.
Used blowout preventer was from end socket when the band pressure of using in the workover treatment at present removed oil pipe.It mainly is to utilize the elastic deformation of rubber to realize that little latus rectum crosses the large diameter pipe post.Be characterized in; Bearing capacity low (≤3MPa); The glue core life-span is short; Leakage rate is big.
1, make easily continuous coiled tubing unstability, fracture.
2, the power fluid cylinder by spring is not easy to unclamp.
3, change the packing unit inconvenience.
4, shut-in well pressure can only be adjusted according to leakage rate.
Summary of the invention
The purpose of this utility model is to provide a kind of coiled tubing blowout prevention box, it can be convenient for changing packing unit, shorten packing unit and prevent unstability in the oil pipe injection process to the upper end distance, it is more reliable that fluid cylinder is resetted, the contact force of glue core and tubing string is adjustable, make things convenient for the timing monitoring well head pressure, adjust shut-in well pressure.
The utility model is achieved in that and comprises clamp nut, last guide way, packing unit, housing, following guide way, sealing ring, sealing ring, sealing ring, sealing ring, double acting fluid cylinder, measurement interface, lower end-piece, clamp nut is connected with housing, between clamp nut and the packing unit guide way is housed, packing unit is connected with following guide way, the double acting fluid cylinder, is connected with lower end-piece.
On lower end-piece, have the measurement interface.
Between housing and double acting fluid cylinder, be provided with sealing ring, sealing ring.
Between housing and lower end-piece, be provided with sealing ring.
Between double acting fluid cylinder and lower end-piece, be provided with sealing ring.
The last end entrance of last guide way is a rounding.
Packing unit is in the middle of guide way, the following guide way, and is close to housing.
Packing unit adopts split type.
Advantage of the present utility model is:
1, adopts the double acting fluid cylinder, effectively controlled the sealing contact force between glue core and tubing string;
2, employing length guiding also shortens the distance of glue core to the upper end, has effectively prevented the oil pipe unstability, has fractureed.
3, split type packing unit structure makes the replacing packing unit convenient.
4, the measurement interface is set on the housing, can the timely monitor well head pressure.
5, the environmental protection requirement of Shi Yinging effectively reduces operating cost.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
As shown in drawings, packing unit 3 in the pressure transmission is in guide way 2, guide way 5 is middle down, and be close to housing 4, the pressure transmitting portions is made of clamp nut 1, last guide way 2, following guide way 5, housing 4 and double acting fluid cylinder 10, double acting fluid cylinder 10 passes to down guide way 5 with hydraulic coupling, the middle packing unit 3 of last guide way 2 extruding that makes down guide way 5 and be pressed on the housing 4 by clamp nut 1 is out of shape, thereby realizes the pressure transmission, reaches the purpose that packing unit is held tubing string tightly.
Targeting part is made of last guide way 2, following guide way 5, and the last end entrance rounding of last guide way 2 plays automatic centralizing function, makes tubing string enter the blowout prevention box smoothly.Shortened the distance of packing unit 3, made coiled tubing can bear bigger injection force, and be not easy unstability to the upper end.Guarantee that coiled tubing is smoothly by packing unit 3.
Packing unit 3 adopts split type, can change packing unit in working order, and not need coiled tubing is tripped out fully, unloads lower compression nut 1, and guide way 2 in the taking-up, just split type packing unit 3 can be changed; Whole replacing process does not need 10 dismountings of double acting fluid cylinder are guaranteed clean environment.Make easy removal.
On lower end-piece 12, be provided with and measure interface 11, identical with the oil pipe internal pressure, energy timely monitor well head pressure, control shut-in well pressure prevents blowout.
The utility model design the time utilizes pressure delivery system effectively to regulate contact force between packing unit and coiled tubing, prevents effectively that to reach well liquid from leaking or the purpose of blowout prevention; Shorten packing unit to the upper end distance and adopt and go up guide frame, make coiled tubing enter smoothly, by the blowout prevention box, prevent coiled tubing unstability, the purpose that fractures to reach; Adopt the upper end to compress packing unit structure, split packing unit, to reach the purpose that is convenient for changing the glue core.
Shut-in well principle of the present utility model is to unite realization by double acting fluid cylinder 10, housing 4, upper and lower guide way 2,5 and packing unit 3 etc.Adopt the two place's sealing rings 6,7 that seal double acting fluid cylinder 10 and housing 4 everywhere, the sealing ring 8 at union and housing 4 places, the sealing ring 9 of double acting fluid cylinder 10 and lower end-piece 12 unions.During shut-in well, by the sealing ring 7 of double acting fluid cylinder 10 with housing 4 places, the sealing ring 8 at union and housing 4 places, the sealing ring 9 of double acting fluid cylinder 10 and lower end-piece 12 unions, the sealing of three places is worked simultaneously and could be realized, guarantees that sealingly secure reliably is to realize key of the present utility model.Pressure tap can be measured well head pressure in good time, can determine shut-in well pressure according to well head pressure, guarantees shut-in well safety, reliable.
Claims (8)
1, coiled tubing blowout prevention box, comprise clamp nut (1), last guide way (2), packing unit (3), housing (4), following guide way (5), sealing ring (6), sealing ring (7), sealing ring (8), sealing ring (9), double acting fluid cylinder (10), measure interface (11), lower end-piece (12), it is characterized in that: clamp nut (1) is connected with housing (4), between clamp nut (1) and the packing unit (3) guide way (2) is housed, packing unit (3) is connected with following guide way (5), and double acting fluid cylinder (10) is connected with lower end-piece (12).
2, coiled tubing blowout prevention box according to claim 1 is characterized in that: be provided with on lower end-piece (12) and measure interface (11).
3, coiled tubing blowout prevention box according to claim 1 is characterized in that: be respectively equipped with sealing ring (6), sealing ring (7) between housing (4) and double acting fluid cylinder (10).
4, coiled tubing blowout prevention box according to claim 1 is characterized in that: be provided with sealing ring (8) between housing (4) and lower end-piece (12).
5, coiled tubing blowout prevention box according to claim 1 is characterized in that: be provided with sealing ring (9) between double acting fluid cylinder (10) and lower end-piece (12).
6, coiled tubing blowout prevention box according to claim 1 is characterized in that: the last end entrance of going up guide way (2) is a rounding.
7, coiled tubing blowout prevention box according to claim 1 is characterized in that: packing unit (3) is in guide way (2) and guiding (5) is middle down, and is close to housing (4).
8, coiled tubing blowout prevention box according to claim 1 is characterized in that: packing unit (3) adopts split type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119131 CN200940464Y (en) | 2006-08-17 | 2006-08-17 | Continuous oil pipe anti-blow-out box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119131 CN200940464Y (en) | 2006-08-17 | 2006-08-17 | Continuous oil pipe anti-blow-out box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940464Y true CN200940464Y (en) | 2007-08-29 |
Family
ID=38746642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620119131 Expired - Lifetime CN200940464Y (en) | 2006-08-17 | 2006-08-17 | Continuous oil pipe anti-blow-out box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940464Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156060A (en) * | 2015-07-23 | 2015-12-16 | 中国石油大学(华东) | Coiled tubing well sealing device |
| CN107905755A (en) * | 2017-12-01 | 2018-04-13 | 王鲁洋 | A kind of application method of coiled tubing dynamic sealing device |
-
2006
- 2006-08-17 CN CN 200620119131 patent/CN200940464Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156060A (en) * | 2015-07-23 | 2015-12-16 | 中国石油大学(华东) | Coiled tubing well sealing device |
| CN105156060B (en) * | 2015-07-23 | 2018-08-24 | 中国石油大学(华东) | Coiled tubing blowout preventer |
| CN107905755A (en) * | 2017-12-01 | 2018-04-13 | 王鲁洋 | A kind of application method of coiled tubing dynamic sealing device |
| CN107905755B (en) * | 2017-12-01 | 2019-10-22 | 江苏艾伦弗罗机械制造有限公司 | A kind of application method of coiled tubing dynamic sealing device |
| CN110735609A (en) * | 2017-12-01 | 2020-01-31 | 王鲁洋 | Use method of petroleum industrial devices |
| CN110735609B (en) * | 2017-12-01 | 2021-11-09 | 淮北卓本科技有限责任公司 | Application method of device for petroleum industry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070829 |
|
| EXPY | Termination of patent right or utility model |