CN207048693U - A kind of bidirectionally limited expansion locking type coiled tubing built-up joint - Google Patents
A kind of bidirectionally limited expansion locking type coiled tubing built-up joint Download PDFInfo
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- CN207048693U CN207048693U CN201720998129.5U CN201720998129U CN207048693U CN 207048693 U CN207048693 U CN 207048693U CN 201720998129 U CN201720998129 U CN 201720998129U CN 207048693 U CN207048693 U CN 207048693U
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Abstract
A kind of bidirectionally limited expansion locking type coiled tubing built-up joint, including coiled tubing, the expansion sleeve to play the role of positioning is provided with one end of coiled tubing, lower expansion sleeve is housed in the other end of coiled tubing, expansion sleeve is arranged symmetrically with lower expansion sleeve, tapered sleeve is arranged symmetrically on the outside of expansion sleeve and lower expansion sleeve, lower expansion sleeve is connected by connection pipe body with lower contact；The upper expansion sleeve in the top connection of this built-up joint is positioned at coiled tubing appropriate location by holding screw first, secondly tapered sleeve is loaded, lower expansion sleeve loads along coiled tubing, finally lower contact is attached by connection pipe body and lower expansion sleeve, supporting downhole tool is connected to lower contact, completes installation action；In extracting tool, lower contact is dismantled using special tonger rotatable connection body, finally rotates the separating action of lower contact realization and downhole tool；The utility model, which has, connects reliable the characteristics of breaking difficult for drop-off.
Description
Technical field
Jointing technical field between petroleum industry coiled tubing and underground tool string is the utility model is related to, is especially related to
A kind of and bidirectionally limited expansion locking type coiled tubing built-up joint.
Background technology
Continuous oil pipe operation is equipped in the operations such as the drilling well for being widely used in oil gas field, completion, well logging, well workover, therefore
It is referred to as " omnipotent implement ".The various construction operations of coiled tubing all be unable to do without the downhole tool to match with it.Therefore,
The development level of the supporting downhole tool of coiled tubing governs the development of coiled tubing, application to a certain extent.Coiled tubing
Joint is mainly used in the downhole tool to match reliably connecting coiled tubing, and coiled tubing joint being capable of reliable work
Work is the successful key element of coiled tubing construction.Therefore, develop one kind and can be reliably connected, convenient disassembly, reuse,
The cheap coiled tubing joint of cost is the active demand of coiled tubing construction operation.
Coiled tubing connector is used for the one end for coiled tubing being connected to instrument or work string.In oil drilling and its
In his well operations, operator carrys out ascending, descending instrument in the wellbore using coiled tubing.Operator's fastening means is connected to tubing string spool
On the end of coiled tubing.Coiled tubing is put by volume, operator can be inserted into instrument, work string desired in oil well
Position.By withdrawing coiled tubing, operator can recall instrument, work string from oil well.
Coiled tubing technology is the hot issue of the industry of international petroleum drilling in recent years, and each oil field tackling of key scientific and technical problems in China
Emphasis problem.In terms of coiled tubing technology is either used for drilling well, or in terms of underground work, it is necessary to special company
Device connection downhole tool is connect, next step operation could be carried out.Therefore coiled tubing connector is coiled tubing technology popularization and application
Indispensable instrument.Coiled tubing connector is the important component for connecting coiled tubing and power tool.
In continuous pipe drilling process, in well head fastening means pipe string, the drill string that is connected below continuous pipe
All long, most long to reach 40m or so, so long tool pipe string is when well head is connected into well, according to drill-well operation code,
It is not allow rotation, and it is also non-rotatable continuously to manage, it is therefore desirable to a kind of instrument is designed, on the one hand the instrument can rise
To the effect of the continuous pipe of connection and drilling tool pipe string, another aspect and can ensures do not rotating the feelings of continuous pipe and drilling tool
Detained under condition in rotation.
Coiled tubing connector generally has both at home and abroad at present:Screw prefastening, slip-type and groove pressing type, wherein slips
Formula connector is divided into two kinds of internal slip type and wild card tile style again.Three kinds of form connectors are used in continuous pipe job execution, and
Connector from different structure form is needed according to different work, these connectors can bear certain pulling force and torsion
Square, but the tension of the connector of these three structure types can not meet the needs of continuous pipe wellbore construction with anti-twisting property.
In addition, screw prefastening, internal slip type and groove pressing type connector be inside continuous pipe due to being installed, therefore subtract
The small internal diameter of coiled tubing, the degree of passing through of pitching and cable when reducing operation.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of bidirectionally limited expansion lock
Compact form coiled tubing built-up joint, solves the improper failure of coiled tubing joint process under arms, it is established that continuous oil
Mode is reliably connected between pipe and underground tool string, largely avoid due to coiled tubing joint fails and cause
Unnecessary economic loss；It is connected between coiled tubing, downhole tool reliably, is not in that midway is de- in the course of the work
Fall, break, seal failure situations such as, have it is easy to loading and unloading, cheap the characteristics of.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of bidirectionally limited expansion locking type coiled tubing built-up joint, including it is arranged on the expansion on the outside of coiled tubing
Set, the expansion sleeve are divided into expansion sleeve 3 and lower expansion sleeve, and upper expansion is set on coiled tubing one end and plays positioning and locking work
The other end of coiled tubing is mounted in, lower expansion sleeve, described upper expansion sleeve is arranged symmetrically with lower expansion sleeve, in upper expansion sleeve and
Tapered sleeve is arranged symmetrically on the outside of lower expansion sleeve, described lower expansion sleeve is connected by connection pipe body with lower contact.
Described expansion sleeve inner surface setting has a ratchet, and outer surface is provided with equally distributed wedge-like engagement face, ratchet with
It can sting to be close between coiled tubing and connect.
Described upper expansion sleeve is fixed by screw.
C-shaped ring is installed on described tapered sleeve, mutually moved between tapered sleeve and upper expansion sleeve, lower expansion sleeve, C-shaped ring with it is upper
Expansion sleeve, the wedge-like engagement face of lower expansion sleeve, which coordinate, realizes locking.
Described tapered sleeve is wedge surface with upper expansion sleeve, the contact jaw of lower expansion sleeve.
Sealing ring is provided between described upper expansion sleeve, lower expansion sleeve and coiled tubing.
The beneficial effects of the utility model：
Connected between the utility model joint and coiled tubing it is reliable, under arms during be not in the feelings surprisingly to come off
Condition；After establishing connection between coiled tubing, the clenching mechanism in joint can be kept persistently to be engaged, be not in snap-in force pine
The phenomenon of relaxation, that is, it is designed with bidirectional locking, stopping means.
Brief description of the drawings
Fig. 1 is that the utility model locks expansion sleeve structure chart.
Fig. 2 is the utility model compression cone nested structure schematic diagram.
Fig. 3 is the utility model lower contact structural representation.
Fig. 4 is the utility model built-up joint entirety installation diagram.
Embodiment
Narration in detail is made to structural principle of the present utility model and operation principle below in conjunction with the accompanying drawings.
(1) realization of clamping function
As shown in Fig. 1 Fig. 2, the clamping function of the design joint realizes that its general principle is similar to using expansion type principle
Setscrew.In this joint design, clamping body realizes that inner surface of expansion sleeve 3 is set on this using special upper expansion sleeve 3
Ratchet 4 is equipped with, outer surface is provided with equally distributed wedge-like engagement face 5, and clamping function mainly passes through the upper inner surface of expansion sleeve 3
Ratchet 4 bites coiled tubing 8 and realized.
(2) realization of locking function
As shown in figure 4, the locking function of the design joint is mainly worked in coordination to realize using cone, lozenges.
In the design, realizing the structure of locking function has tapered sleeve 7, C-shaped ring 6, upper expansion sleeve 3 and lower expansion sleeve 9 etc..C-shaped ring 6 is installed
On tapered sleeve 7, upper expansion sleeve 3, lower expansion sleeve 9 and tapered sleeve 7 mutually move, by the wedge surface of tapered sleeve 7 extrude upper expansion sleeve 3,
Lower expansion sleeve 9, coordinated by the wedge surface of C-shaped ring 6 with uniform wedge-like engagement face 5 on expansion sleeve outer surface and realize locking function.
(3) realization of bidirectionally limited function
As shown in figure 4, the bidirectionally limited of the design joint, locking function are mainly by being arranged symmetrically tapered sleeve 7, being arranged symmetrically
Upper expansion sleeve 3 and lower expansion sleeve 9, it is symmetrically installed the relative motion of C-shaped ring 6, cooperates to realize.By be arranged symmetrically three
Kind device, structure, limit the up, descending of movable device respectively, reach and mutually restrict motion, mutually restriction movable position, phase
The function of mutual reverse locking.
(4) realization of linkage function
As shown in figure 3, the linkage function of the design joint is mainly for overcoming coiled tubing to be revolved in work progress
Then the problem of instrument installation difficulty such as caused joint.The realization of linkage function in the design mainly passes through the cone of top connection
The mating connection between 7, upper expansion sleeve 3 and lower expansion sleeve 9, connection pipe body 10, lower contact 11 is covered to realize.The tapered sleeve of top connection
7th, between upper expansion sleeve 3 and lower expansion sleeve 9, lower contact 11, connection pipe body 10 using be threadedly coupled, key connection, revolved by tonger
Turn connection pipe body 10 and realize tripping action.
As the kit of coiled tubing, the major function of coiled tubing joint is in coiled tubing and supporting underground work
Establish and be reliably connected between tool, to ensure being smoothed out for construction operation.The design connects for a kind of bidirectionally limited expansion locking type
Continuous oil pipe built-up joint, the joint possess following functions, advantage：
(1) connected between the design joint and coiled tubing it is reliable, under arms during be not in the feelings surprisingly to come off
" sting firm " between condition, i.e. joint and coiled tubing；
(2) after establishing connection between the design joint and coiled tubing, the clenching mechanism in joint can be kept persistently to sting
Close, be not in the phenomenon of snap-in force relaxation, that is, be designed with bidirectional locking, stopping means, ensure between joint and coiled tubing
" locking tightly "；
(3) when connection is established between the design joint and coiled tubing, downhole tool, it is contemplated that coiled tubing can not rotate
The drawbacks of, attachment structure is dexterously devised, passes through the handling of rotation implementation tool and coiled tubing between instrument, i.e. joint
Between coiled tubing, downhole tool " easily assembling ".
(4) connection between the design joint and coiled tubing possesses preferable sealing property, is provided with key position
Sealing ring 2 is not in the phenomenon of the leakages such as fluid, pressure, i.e., between joint and coiled tubing " good seal ".
Operation principle of the present utility model：
Tapered sleeve 7 produces expansion sleeve 3 and lower expansion sleeve 9 in radial direction force compresses when mounted, makes expansion sleeve 3 and lower expansion sleeve
Ratchet 4 on 9 tightly bites coiled tubing 8, realize the tapered sleeve 7 of built-up joint top connection, upper expansion sleeve 3 and lower expansion sleeve 9 with
The connection of coiled tubing 8；It is real by coordinating the lozenges for deserving to be called expansion sleeve 3 and lower expansion sleeve 9 and the symmetrical upper C shape ring 6 of tapered sleeve 7
Existing bidirectionally limited locking；By the body 10 that is rotatably connected, top connection tapered sleeve 7, upper expansion sleeve 3, lower expansion sleeve 9 and lower contact are realized
11st, the connection between downhole tool.
When mounted, the upper expansion sleeve 3 in the top connection of this built-up joint is passed through into the company of being positioned at of holding screw 1 first
The continuous appropriate location of oil pipe 8, next loads tapered sleeve 7, lower expansion sleeve 9 loads along coiled tubing 8, finally passes through lower contact 11
Connection pipe body 10 is attached with lower expansion sleeve 9, supporting downhole tool is connected to lower contact 11, completes installation action.Tearing open
When unloading instrument, lower contact 11 is dismantled using special tonger rotatable connection body 10, lower contact 11 is finally rotated and realizes and underground work
The separating action of tool.
Claims (7)
1. a kind of bidirectionally limited expansion locking type coiled tubing built-up joint, it is characterised in that including being arranged on coiled tubing (8)
The expansion sleeve in outside, the expansion sleeve are divided into expansion sleeve (3) and lower expansion sleeve (9), and upper expansion sleeve (3) is arranged on coiled tubing
(8) one end, plays positioning and locking, and lower expansion sleeve (9) is mounted in the other end of coiled tubing (8), described upper expansion sleeve (3) with
Lower expansion sleeve (9) is arranged symmetrically, and tapered sleeve (7) has been arranged symmetrically on the outside of upper expansion sleeve (3) and lower expansion sleeve (9), under described
Expansion sleeve (9) is connected by connection pipe body (10) with lower contact (11).
2. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
The expansion sleeve inner surface setting stated has ratchet (4), and outer surface is provided with equally distributed wedge-like engagement face (5), and ratchet (4) is with connecting
It can sting to be close between continuous oil pipe (8) and connect.
3. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
The upper expansion sleeve (3) stated is fixed by screw (1).
4. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
C-shaped ring (6) is installed, tapered sleeve (7) and upper expansion sleeve (3), lower expansion sleeve mutually move between (9), c-type on the tapered sleeve (7) stated
The wedge-like engagement face (5) of ring (6) and upper expansion sleeve (3), lower expansion sleeve (9), which coordinates, realizes locking.
5. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
The tapered sleeve (7) stated is wedge surface with upper expansion sleeve (3), the contact jaw of lower expansion sleeve (9).
6. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
Sealing ring (2) is provided between upper expansion sleeve (3), lower expansion sleeve (9) and the coiled tubing (8) stated.
7. the bidirectionally limited expansion locking type coiled tubing built-up joint of one kind according to claim 1, it is characterised in that institute
Tapered sleeve (7), upper expansion sleeve (3), the lower expansion sleeve (9) stated are threadedly coupled with being used between lower contact (11), connection pipe body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998129.5U CN207048693U (en) | 2017-08-10 | 2017-08-10 | A kind of bidirectionally limited expansion locking type coiled tubing built-up joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998129.5U CN207048693U (en) | 2017-08-10 | 2017-08-10 | A kind of bidirectionally limited expansion locking type coiled tubing built-up joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048693U true CN207048693U (en) | 2018-02-27 |
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ID=61499596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720998129.5U Active CN207048693U (en) | 2017-08-10 | 2017-08-10 | A kind of bidirectionally limited expansion locking type coiled tubing built-up joint |
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|---|---|
| CN (1) | CN207048693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288552A (en) * | 2017-08-10 | 2017-10-24 | 西安石油大学 | Bidirectionally limited expansion locking type coiled tubing built-up joint |
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
-
2017
- 2017-08-10 CN CN201720998129.5U patent/CN207048693U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288552A (en) * | 2017-08-10 | 2017-10-24 | 西安石油大学 | Bidirectionally limited expansion locking type coiled tubing built-up joint |
| CN107288552B (en) * | 2017-08-10 | 2024-03-12 | 西安石油大学 | Bidirectional limiting expansion locking type coiled tubing combined joint |
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
| CN111456645B (en) * | 2019-01-22 | 2022-05-10 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
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