CN107489378A - A kind of coiled tubing attachment means - Google Patents
A kind of coiled tubing attachment means Download PDFInfo
- Publication number
- CN107489378A CN107489378A CN201710970670.XA CN201710970670A CN107489378A CN 107489378 A CN107489378 A CN 107489378A CN 201710970670 A CN201710970670 A CN 201710970670A CN 107489378 A CN107489378 A CN 107489378A
- Authority
- CN
- China
- Prior art keywords
- slips
- coiled tubing
- slip sleeve
- attachment means
- top connection
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Abstract
The present invention proposes a kind of coiled tubing attachment means, including top connection, slip sleeve, slips, spacer ring and lower contact, the top connection is connected through a screw thread with the lower contact, the side of the lower contact is provided with spacer ring, slips inside the top connection is held out against by spacer ring, the slips bites coiled tubing by inner side slips tooth, the slip sleeve set by outside is connected with the top connection, the slips passes through cone match with slip sleeve, the first gap is provided with the slips, the second gap is provided with the slip sleeve, it is more uniformly stressed coiled tubing, add the load-carrying ability of joint connection, enhance the reliability of connection.
Description
Technical field
The present invention relates to a kind of attachment means, more particularly to a kind of attachment means for coiled tubing.
Background technology
In recent years, oil extraction is more and more, in order to improve oil recovery factor, is carried out usually using continuous oil pipe device
Underground work.Coiled tubing connects underground operation tool by coiled tubing joint, and current coiled tubing joint mainly has recessed
Slot type, pit type, rivet type, slip-type etc.；Divided from installation approach, coiled tubing joint can be divided into inscribed joint and external connect
Head.External slips joint is a kind of conventional slip-type coiled tubing external connector, and conventional external slips joint design is top connection
By cone match between slips, when screw thread rotation is urgent, slips is pushed by cone match, serves fixed continuous oil
The effect of pipe, but the side that such a external slips have thickness of thin takes the lead in deforming, inhomogeneous deformation causes coiled tubing stress not
Uniformly.The present invention proposes a kind of new coiled tubing external connector, and slips passes through cone match, slips and card with slip sleeve
Watt put and to be provided with gap, be more uniformly stressed coiled tubing, add the load-carrying ability of joint connection, enhance connection
Reliability.
The content of the invention
The present invention provides a kind of coiled tubing attachment means, it is intended to solves the problems, such as coiled tubing unbalance stress.
The present invention is achieved in that a kind of coiled tubing attachment means, including top connection, slip sleeve, slips, spacer ring and
Lower contact, the top connection are connected through a screw thread with the lower contact, and the side of the lower contact is provided with spacer ring, passes through spacer ring
The slips inside the top connection is held out against, the slips is bitten coiled tubing by inner side slips tooth, set by outside
Slip sleeve be connected with the top connection, the slips and slip sleeve are provided with the first seam by cone match on the slips
Gap, the second gap is provided with the slip sleeve.
Preferably, the lower contact is provided with groove, and some sealing rings are provided with groove.
Preferably, the outer surface of the slips is continuous screw thread, and the thread form angle of the screw thread is 30 ° -90 °.
Preferably, the outer surface of described slips is that the arrangement of some identical conical surfaces forms, and the drift angle of the conical surface is
30°-150°。
Preferably, the slips cuts out at least 1 first gap vertically.
Preferably, the slip sleeve is tubular structure.
Preferably, the slip sleeve cuts out at least 1 second gap by the axial direction of tubular structure.
The beneficial effects of the invention are as follows：By slips and slip sleeve by cone match, while on slips and slip sleeve
Gap is provided with, is more uniformly stressed coiled tubing, the load-carrying ability of joint connection is added, enhances the reliable of connection
Property.
Brief description of the drawings
Fig. 1 is a kind of structural scheme of mechanism of embodiment of the present invention
Fig. 2 is a kind of slip sleeve schematic diagram of embodiment of the present invention
Fig. 3 is a kind of slips schematic diagram of embodiment of the present invention
Brief description of the drawings：1-top connection, 2-slip sleeve, 3-conical surface, 4-slips, 5-spacer ring, 6-screw thread, 7-under connect
Head, 8-sealing ring, 9-coiled tubing, 10-slips tooth, the 11-the second gap, the 12-the first gap, 13- lower contacts connection
Place.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment
A kind of coiled tubing attachment means as shown in Figure 1, including top connection 1, slip sleeve 2, slips 4, spacer ring 5 and under connect
First 7, top connection 1 is connected with lower contact 7 by screw thread 6, and the side of lower contact 7 is provided with spacer ring 5, is held out against and is located at by spacer ring 5
Slips 4 inside top connection 1, slips 4 bite coiled tubing 9 by inner side slips tooth 10, by outside set slip sleeve 2 with
Top connection 1 is connected, and slips 4 is coordinated with slip sleeve 2 by the conical surface 3, and lower contact 7 is provided with groove, and several are provided with groove
Sealing ring 8, sealing is provided between lower contact 7 and coiled tubing 9.
Slips 4 as shown in Figure 3 is provided with 6 first gaps 12, and it has 3 the side of slips 4 is axially disposed
One gap 12,3 first gap 12 surround the circumferencial direction equidistantly distributed of slips 4, set vertically in the opposite side of slips 4
3 first gaps 12 are equipped with, 3 first gap 12 surrounds the circumferencial direction equidistantly distributed of slips 4.
Slip sleeve 2 as shown in Figure 2 is tubular structure, and 2 second gaps 11 are provided with slip sleeve 2, and this 2 second is stitched
Slip sleeve 2 is split into two halves by gap 11.
The outer surface of slips 4 is that the arrangement of some identical conical surfaces 3 forms, and the drift angle of the conical surface 3 is 90 °, the interior table of slip sleeve 2
The conical surface 3 in face and the outer surface of slips 4 is mutually ratcheting.The outer surface of slips 4 can also be continuous screw thread, and the thread form angle of screw thread is
45 °, the inner surface of slip sleeve 2 and being connected through a screw thread for the outer surface of slips 4.
In use, other downhole tools are connected to the coiled tubing attachment means in the present invention by lower contact junction 13
On, and by axial tension by the threaded function of lower contact junction 13 in lower contact 7, now axial tension is passed by screw thread 6
Top connection 1 is delivered to, top connection 1 promotes slip sleeve 2, because slip sleeve 2 and slips 4 are cone match, so slip sleeve 4 connects downwards
During first 7 direction axial movement, slips 2 can be internally pressed, so that slips tooth 10 bites the outer wall of coiled tubing 9, connects oil pipe
Connection device is fixed on coiled tubing 9, and when pulling force increases, the depth that slips tooth 10 bites coiled tubing 9 is deeper, so as to hold
By bigger pulling force, because the thickness of slips 2 is uniform, so its deformation is uniform, the depth that slips tooth 10 bites coiled tubing 9 is equal
It is even, the uniform force of coiled tubing 9, make coiled tubing 9 be not easy to be destroyed, the contact area of slips tooth 2 and coiled tubing 9 becomes
Greatly, pressure suffered by surface diminishes, therefore preferably protects coiled tubing to be not damaged by.
The thickness of slips 4 of the present invention is fixed, and in the case where tool external diameter is certain, can increase the length of slips 4, so as to
The contact area of slips 4 and coiled tubing 9 is added, joint can be made to bear bigger load.Pass through slips 4 and slip sleeve 2
By cone match, while gap is provided with slips 4 and slip sleeve 2, is more uniformly stressed coiled tubing, adds and connect
The load-carrying ability of head connection, enhance the reliability of connection.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of coiled tubing attachment means, including top connection, slip sleeve, slips, spacer ring and lower contact, the top connection and institute
State lower contact to be connected through a screw thread, the side of the lower contact is provided with spacer ring, holds out against in the top connection by spacer ring
The slips in portion, the slips bite coiled tubing by inner side slips tooth, pass through the slip sleeve that outside is set and the top connection
It is connected, it is characterised in that：The slips and slip sleeve are provided with the first gap, the card by cone match on the slips
Watt put and to be provided with the second gap.
A kind of 2. coiled tubing attachment means according to claim 1, it is characterised in that：The lower contact is provided with ditch
Groove, some sealing rings are provided with groove.
A kind of 3. coiled tubing attachment means according to claim 1, it is characterised in that：The outer surface of the slips is company
Continuous screw thread, the thread form angle of the screw thread is 30 ° -90 °.
A kind of 4. coiled tubing attachment means according to claim 1, it is characterised in that：The outer surface of described slips is
Some identical conical surface arrangements form, and the drift angle of the conical surface is 30 ° -150 °.
A kind of 5. coiled tubing attachment means according to claim 3 or 4, it is characterised in that：The slips is cut vertically
Go out at least 1 first gap.
A kind of 6. coiled tubing attachment means according to claim 1, it is characterised in that：The slip sleeve is tubular knot
Structure.
A kind of 7. coiled tubing attachment means according to claim 6, it is characterised in that：The slip sleeve passes through tubular knot
Cut out at least 1 second gap in the axial direction of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710970670.XA CN107489378B (en) | 2017-10-18 | 2017-10-18 | Coiled tubing connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710970670.XA CN107489378B (en) | 2017-10-18 | 2017-10-18 | Coiled tubing connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489378A true CN107489378A (en) | 2017-12-19 |
| CN107489378B CN107489378B (en) | 2023-07-25 |
Family
ID=60653706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710970670.XA Active CN107489378B (en) | 2017-10-18 | 2017-10-18 | Coiled tubing connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489378B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175308A (en) * | 2021-05-08 | 2021-07-27 | 西安石油大学 | Direct-connected mechanical coiled tubing drilling and grinding drifting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040084191A1 (en) * | 2002-11-01 | 2004-05-06 | Laird Mary L. | Internal coiled tubing connector |
| US20050061500A1 (en) * | 2003-09-24 | 2005-03-24 | Dodd Rex A. | Internal slip connector |
| CN103362493A (en) * | 2012-04-06 | 2013-10-23 | 中国石油化工股份有限公司 | Rotatable adaptive compensator of coiled tubing test string |
| CN206053868U (en) * | 2016-09-30 | 2017-03-29 | 四川赛泰克能源科技有限公司 | A kind of coiled tubing slips ring means of press seals combined type jointing |
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
| CN206468306U (en) * | 2017-01-24 | 2017-09-05 | 中国石油天然气集团公司 | Reducing coiled tubing docking facilities |
| CN207526431U (en) * | 2017-10-18 | 2018-06-22 | 杰瑞能源服务有限公司 | A kind of coiled tubing attachment device |
-
2017
- 2017-10-18 CN CN201710970670.XA patent/CN107489378B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040084191A1 (en) * | 2002-11-01 | 2004-05-06 | Laird Mary L. | Internal coiled tubing connector |
| US20050061500A1 (en) * | 2003-09-24 | 2005-03-24 | Dodd Rex A. | Internal slip connector |
| CN103362493A (en) * | 2012-04-06 | 2013-10-23 | 中国石油化工股份有限公司 | Rotatable adaptive compensator of coiled tubing test string |
| CN206053868U (en) * | 2016-09-30 | 2017-03-29 | 四川赛泰克能源科技有限公司 | A kind of coiled tubing slips ring means of press seals combined type jointing |
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
| CN206468306U (en) * | 2017-01-24 | 2017-09-05 | 中国石油天然气集团公司 | Reducing coiled tubing docking facilities |
| CN207526431U (en) * | 2017-10-18 | 2018-06-22 | 杰瑞能源服务有限公司 | A kind of coiled tubing attachment device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175308A (en) * | 2021-05-08 | 2021-07-27 | 西安石油大学 | Direct-connected mechanical coiled tubing drilling and grinding drifting device |
| CN113175308B (en) * | 2021-05-08 | 2022-10-14 | 西安石油大学 | Direct-connected mechanical coiled tubing drilling and grinding drifting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489378B (en) | 2023-07-25 |
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