CN203769693U - Hydraulic releasing device for continuous oil pipes - Google Patents
Hydraulic releasing device for continuous oil pipes Download PDFInfo
- Publication number
- CN203769693U CN203769693U CN201420153843.0U CN201420153843U CN203769693U CN 203769693 U CN203769693 U CN 203769693U CN 201420153843 U CN201420153843 U CN 201420153843U CN 203769693 U CN203769693 U CN 203769693U
- Authority
- CN
- China
- Prior art keywords
- sub
- lock ring
- connector
- releasing
- coiled tubing
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a hydraulic releasing device for continuous oil pipes. The hydraulic releasing device comprises an upper connector, an upper releasing connector, a lower connector and a lower releasing connector which are sequentially axially arranged from top to bottom. The upper connector and the lower connector are respectively connected with the upper releasing connector and the lower releasing connector in a threaded manner. The hydraulic releasing device is characterized by further comprising a ball seat and a lock ring sleeve, the ball seat is arranged in the upper releasing connector, a cavity is formed between the outer wall of the upper releasing connector and the inner wall of the lower releasing connector, the upper end of the lock ring sleeve is arranged in the cavity, the lower end of the lock ring sleeve is arranged in the lower connector, the lock ring sleeve is connected with the inner wall of the lower releasing connector by connecting devices, a protrusion is arranged on the inner wall of the lower releasing connector, a lock ring is arranged between the lower end of the protrusion and the upper end of the lock ring sleeve, the ball seat is concentric with the upper releasing connector, and the lock ring is concentric with the lower releasing connector. The hydraulic releasing device has the unique advantages that a releasing effect can be realized in a hydraulic mode under emergency conditions, and accordingly the safety of strings can be guaranteed.
Description
Technical field
The utility model relates to a kind of oil drilling and extracting equipment, particularly a kind of coiled tubing hydraulic release device.
Background technology
Fast and the performance driving economy of operating speed is the outstanding advantages of employing coiled tubing technology.Current coiled tubing accounts for 75% of the total workload of coiled tubing for the workload of well-flushing, note nitrogen and acid filling, and coiled tubing, for pressure break, the fast development of drillng operation amount, had reached 15% of total workload in recent years.As can be seen here, along with the increasing of oil extraction and the development of oil development technology, continuous oil pipe operation is to diversified development in recent years.In horizontal well, can utilize coiled tubing to comprise many operations such as sand-flushing, acidifying, pressure break, wax removal, squeezing off, gaslift, salvaging, brill plug, demixing injection-production, if tubing string occurs abnormal, can not normally remove, to bring about great losses, therefore, in tubing string, must be equipped with a kind of instrument that can give up in emergency, to ensure the safety of tubing string.
Utility model content
The purpose of this utility model is to provide a kind of coiled tubing hydraulic release device, and it can in case of emergency can adopt hydraulic way to give up, to ensure the safety of tubing string.
The technical scheme that realizes the utility model object is: a kind of coiled tubing hydraulic release device, comprise the top connection of arranging successively from top to bottom vertically, upper back-off sub, lower contact and lower back-off sub, described is upper, lower contact is respectively with upper, lower back-off sub is threaded, it is characterized in that: there is a ball seat, this ball seat is arranged in back-off sub, between the inwall of the outer wall of described upper back-off sub and lower back-off sub, form cavity, there is a lock ring cover, the upper end of this lock ring cover is arranged in cavity, lower end is arranged in lower contact, described lock ring cover is connected with the inwall of lower back-off sub by linkage, the inwall of described lower back-off sub has projection, between the upper end of the lower end of this projection and lock ring cover, there is lock ring, described ball seat is concentric with upper back-off sub, described lock ring is concentric with lower back-off sub.
And described linkage is pin, described lock ring cover lower end edge outer wall is provided with a series of pin holes, and this pin one end is held and stayed ring to be connected the other end with lower back-off sub to be placed in pin hole lock ring is overlapped to locking by pin.
And upper back-off sub upper end is provided with inside and outside by-pass prot.
And upper back-off sub inwall is provided with and stopped step.
And upper back-off sub bottom and lower back-off sub top intermeshing by groove milling.
And lower back-off sub inwall upper end has standard fishing neck.
And lock ring internal diameter has a series of dovetail grooves, this lock ring also has the groove milling that a series of left and right replace in the axial direction.
The utility model has the advantage of: 1. it can in case of emergency can adopt hydraulic way to give up, to ensure the safety of tubing string.2. descend back-off sub inwall upper end to there is standard fishing neck, be convenient to salvage in the future.
Brief description of the drawings
Fig. 1 is the structural representation of coiled tubing hydraulic release device;
Fig. 2 is the structural representation of lock ring.
Detailed description of the invention
The utility model is described further below with reference to embodiment referring to Fig. 1～2.
A kind of oil drilling and extracting equipment, particularly a kind of coiled tubing hydraulic release device, comprise the top connection 1 of arranging successively from top to bottom vertically, upper back-off sub 2, lower contact 3 and lower back-off sub 4, described is upper, lower contact 3 is respectively with upper, lower back-off sub 4 is threaded, it is characterized in that: there is a ball seat 5, this ball seat 5 is arranged in back-off sub 2, between the outer wall of described upper back-off sub 2 and the inwall of lower back-off sub 4, form cavity, there is a lock ring cover 7, the upper end of this lock ring cover 7 is arranged in cavity, lower end is arranged in lower contact 3, described lock ring cover 7 is connected with the inwall of lower back-off sub 4 by linkage, the inwall of described lower back-off sub 4 has projection, between the upper end of the lower end of this projection and lock ring cover 7, there is lock ring 8, described ball seat 5 is concentric with upper back-off sub 2, described lock ring 8 is concentric with lower back-off sub 4.
In the time that generation emergency need to be given up, from coiled tubing, drop into steel ball 6, take a seat at the upper end of ball seat 5 conical surface, from coiled tubing to the interior pump pressure of ball seat 5, reach after certain pressure, the descending promotion lock ring of ball seat 5 overlaps 7 descending until pins and holds and stay ring 9 to touch lower contact 3, continue pump pressure and reach the shear force value that pin 10 designs, pin 10 is cut off, ball seat 5 continues to promote lock rings and overlaps 7 descending, descending due to lock ring cover 7, lock ring 8 cylindricals will lose support, on carry coiled tubing tubing string, to drive top connection 1, upper back-off sub 2 is released up from lock ring 8, ball seat 5 is articulated in quilt in back-off sub 2 and is taken away fish simultaneously, thereby realize hydraulic releasing.The place of giving up has left lower contact 3 and the latter half.
And described linkage is pin 10, described lock ring overlaps 7 lower end edge outer walls and is provided with a series of pin holes, and these pin 10 one end are held and stayed ring 9 to be connected the other end with lower back-off sub 4 to be placed in and in pin hole, lock ring to be overlapped to 7 lockings by pin.
Pin 10 is used for fixing lock ring cover 7, and need to give up time, when pressure reaches after the shear force value of pin 10, thereby pin 10 will be cut off and can continue the action of giving up.
Further technical scheme can be that upper back-off sub 2 upper ends are provided with inside and outside by-pass prot.
After giving up, ball seat 5 is descending, exposes inside and outside by-pass prot, when lift pipe string, avoids the interior liquid flooding of tubing string to well head.
And upper back-off sub 2 inwalls are provided with and stopped step.
Thereby on upper back-off sub 2 inwalls, arrange and stopped step and reach ball seat 5 is carried out to spacing object.
Further technical scheme can be that upper back-off sub 2 bottoms and lower back-off sub 4 tops are intermeshing by groove milling.
Adopt the structure being meshed by groove milling to make it can bear certain moment of torsion.
And lower back-off sub 4 inwall upper ends have standard fishing neck.
In lower back-off sub 4 inwall upper ends, standard fishing neck is set, is convenient to implement salvage rescue in the future.
Further technical scheme can also be that lock ring 8 internal diameters have a series of dovetail grooves, and this lock ring 8 also has the groove milling that a series of left and right replace in the axial direction.
Not only locking is effective, can also in the time need to giving up, avoid flicking the generation of situation.
The utility model is on the same day, with regard to a subject application patent of invention.
Claims (7)
1. a coiled tubing hydraulic release device, comprise the top connection of arranging successively from top to bottom vertically, upper back-off sub, lower contact and lower back-off sub, described is upper, lower contact is respectively with upper, lower back-off sub is threaded, it is characterized in that: there is a ball seat, this ball seat is arranged in back-off sub, between the inwall of the outer wall of described upper back-off sub and lower back-off sub, form cavity, there is a lock ring cover, the upper end of this lock ring cover is arranged in cavity, lower end is arranged in lower contact, described lock ring cover is connected with the inwall of lower back-off sub by linkage, the inwall of described lower back-off sub has projection, between the upper end of the lower end of this projection and lock ring cover, there is lock ring, described ball seat is concentric with upper back-off sub, described lock ring is concentric with lower back-off sub.
2. a kind of coiled tubing hydraulic release device according to claim 1, it is characterized in that: described linkage is pin, described lock ring cover lower end edge outer wall is provided with a series of pin holes, and this pin one end is held and stayed ring to be connected the other end with lower back-off sub to be placed in pin hole lock ring is overlapped to locking by pin.
3. a kind of coiled tubing hydraulic release device according to claim 1, is characterized in that: upper back-off sub upper end is provided with inside and outside by-pass prot.
4. a kind of coiled tubing hydraulic release device according to claim 1, is characterized in that: upper back-off sub inwall is provided with and stopped step.
5. a kind of coiled tubing hydraulic release device according to claim 1, is characterized in that: upper back-off sub bottom and lower back-off sub top are intermeshing by groove milling.
6. a kind of coiled tubing hydraulic release device according to claim 1, is characterized in that: lower back-off sub inwall upper end has standard fishing neck.
7. a kind of coiled tubing hydraulic release device according to claim 1, is characterized in that: lock ring internal diameter has a series of dovetail grooves, and this lock ring also has the groove milling that a series of left and right replace in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153843.0U CN203769693U (en) | 2014-04-01 | 2014-04-01 | Hydraulic releasing device for continuous oil pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153843.0U CN203769693U (en) | 2014-04-01 | 2014-04-01 | Hydraulic releasing device for continuous oil pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203769693U true CN203769693U (en) | 2014-08-13 |
Family
ID=51286894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153843.0U Withdrawn - After Issue CN203769693U (en) | 2014-04-01 | 2014-04-01 | Hydraulic releasing device for continuous oil pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203769693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912229A (en) * | 2014-04-01 | 2014-07-09 | 四机赛瓦石油钻采设备有限公司 | Coiled tubing hydraulic releasing device |
-
2014
- 2014-04-01 CN CN201420153843.0U patent/CN203769693U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912229A (en) * | 2014-04-01 | 2014-07-09 | 四机赛瓦石油钻采设备有限公司 | Coiled tubing hydraulic releasing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140813 Effective date of abandoning: 20170419 |
|
| AV01 | Patent right actively abandoned |