CN202338212U - Continuous oil pipe connector - Google Patents
Continuous oil pipe connector Download PDFInfo
- Publication number
- CN202338212U CN202338212U CN 201120400820 CN201120400820U CN202338212U CN 202338212 U CN202338212 U CN 202338212U CN 201120400820 CN201120400820 CN 201120400820 CN 201120400820 U CN201120400820 U CN 201120400820U CN 202338212 U CN202338212 U CN 202338212U
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- top connection
- continuous oil
- oil pipe
- connector
- 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 - Fee Related
Links
- 230000007704 transition Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of continuous oil pipes, in particular to a continuous oil pipe connector. The tail part of a continuous oil pipe of the connector is cut into a plurality of flaps; the tail end of each flap is of a T-shaped step shape; a plurality of straight flutes are fromed in the outer cylindrical surface of the lower end of an upper joint in design; the continuous oil pipe is inserted into the upper joint and each flap at the tail part of the continuous oil pipe is simultaneously turned upwards to be arranged in the corresponding straight flutes of the upper joint; the T-shaped step surface of the tail end of each flap is hung on the end face of the top of a flute edge of the corresponding straight flute; a lower joint is connected with an external screw thread at the middle part of the upper joint by an internal screw thread at the upper end of the lower joint; the outer diameter of each flute edge of the upper joint is the same as the inner diameter of the matched lower joint; and a step is arranged inside the lower joint in design and supports against the end face of the lower part, which is formed after the continuous oil pipe is turned into the straight flutes of the upper joint. According to the utility model, the tension-compression resistance and torsion resistance capabilities of the continuous oil pipe connector are greatly increased and the full-size inner diameter of the continuous oil pipe is realized; and the passing degree of a cable and a steel ball is ensured. The utility model overcomes the defect that both the tensile resistance and torsion resistance capabilities of the traditional connector cannot meet the requirement of the continuous pipe drilling construction.
Description
Technical field:
The utility model relates to a kind of coiled tubing technical field, particularly a kind of coiled tubing connector.
Background technology:
The coiled tubing technology is the hot issue of the industry of international petroleum drilling in recent years, also is the emphasis problem of each oil field tackling of key scientific and technical problems of China.No matter the coiled tubing technology is to be used for the drilling well aspect, still is used for the underground work aspect, must use special connector to connect downhole tool, just can carry out next step operation.Therefore coiled tubing connector is the indispensable instrument that coiled tubing technology popularization is used.Coiled tubing connector is the important component part that connects coiled tubing and power tool; At present both at home and abroad coiled tubing connector has 3 kinds of form of structure usually: screw top-closed structure, slip-type and groove compacting formula, wherein the slip-type connector is divided into two kinds of internal slip formula and external slips formulas again.Three kinds of form connectors are used for managing continuously in the job execution more; And use the connector of different structure form according to the different work needs; These connectors can both bear certain pulling force and moment of torsion, but the tension of the connector of these three kinds of form of structure and anti-twisting property all can not satisfy the needs of continuous pipe bit well construction.In addition, therefore screw top-closed structure, internal slip formula and groove compacting formula connector have reduced the internal diameter of continuous pipe, the degree of passing through of pitching and cable when having reduced operation owing to install from continuous pipe inside.
The utility model content:
The technical problem that the utility model will solve provides a kind of coiled tubing connector, and this connector has been realized tension pressure, the raising greatly of anti-twisting property and the full-scale internal diameter of coiled tubing, has guaranteed the degree of passing through of cable and steel ball.The tension of existing connector and the deficiency that anti-twisting property all can not satisfy the needs of continuous pipe bit well construction have been overcome.
The technical scheme that the utility model is taked is: a kind of coiled tubing connector comprises coiled tubing, top connection and lower contact; The coiled tubing afterbody cuts into a plurality of flaps, and every lobe is terminal T-shaped step-like; The external cylindrical surface of top connection lower end is designed with a plurality of straight troughs, and coiled tubing penetrates in the top connection, and simultaneously each lobe of afterbody turnup that makes progress is placed in the corresponding straight trough of top connection, and the terminal T shape of every lobe step surface hangs over straight trough groove rib top end; Lower contact is connected with top connection mid portion external screw thread through the upper end internal thread, and top connection groove rib external diameter is identical with the lower contact internal diameter of cooperation, and the lower contact indoor design has a step, withstands on the coiled tubing turnup lower end surface that the back forms in the top connection groove.
The coiled tubing afterbody cuts into 8 lobes, and every lobe end is the wide T shape step of 15mm, and the external cylindrical surface of corresponding top connection lower end is designed with 8 straight troughs.
Top connection least significant end external surface is designed to taper seat, and the inner cylinder face of this taper seat and top connection is an arc transition.
The straight trough groove depth of top connection is greater than coiled tubing wall thickness 1mm.
The O RunddichtringO all is installed between coiled tubing and top connection, top connection and the lower contact.
The beneficial effect of the utility model is: the utility model is owing to adopted the terminal T shape of the every lobe of coiled tubing afterbody step surface to hang over the mode of the straight trough groove rib top end of top connection lower end; Thereby have the full-scale internal diameter that higher tension, antitorque function keep coiled tubing simultaneously, guaranteed the degree of passing through of cable and steel ball; Owing to adopted the O RunddichtringO to seal, thereby possessed good high pressure sealing performance, prevented that drilling fluid is from the connector seepage; In addition, the utility model is simple in structure, and is easy for installation, quick detachable, reusable.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the assembling drawing of coiled tubing and top connection.
The specific embodiment:
Like Fig. 1, shown in Figure 2, a kind of coiled tubing connector comprises coiled tubing 1, top connection 3 and lower contact 4; Coiled tubing 1 afterbody cuts into 8 lobes, and every lobe end is the wide T shape step of 15mm; The external cylindrical surface of top connection 3 lower ends is designed with 8 straight troughs, and the straight trough groove depth is greater than coiled tubing 1 wall thickness 1mm; Coiled tubing 1 penetrates in the top connection 3; Simultaneously each lobe of afterbody turnup that makes progress is placed in the top connection 3 corresponding straight troughs; Prevent that coiled tubing 1 from rotating in the utility model; Thereby make the utility model possess the antitorque function of anti-rotation, the terminal T shape of every lobe step surface hangs over straight trough groove rib top end, prevents in the utility model, to deviate from when coiled tubing 1 from being drawn; Top connection 3 least significant end external surfaces are designed to taper seat, and the inner cylinder face of this taper seat and top connection 3 is an arc transition, have reduced the stress that is drawn behind coiled tubing 1 turnup, produced during pressurized; Lower contact 4 is connected with top connection 3 mid portion external screw threads through the upper end internal thread, and top connection 3 groove rib external diameters are identical with lower contact 4 internal diameters of cooperation, fixed the coiled tubing 1 behind the turnup diametrically and in groove, opened; Lower contact 4 indoor designs have a step, withstand on the coiled tubing 1 turnup lower end surface that the back forms in top connection 3 grooves; Lower contact 4 lower ends are designed to the drilling rod pin thread, are connected with DHA during construction; Between coiled tubing 1 and top connection 3, top connection 3 and the lower contact 4 O RunddichtringO 2 is installed all, has guaranteed the sealing performance of the utility model.
It is understandable that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (5)
1. a coiled tubing connector comprises coiled tubing (1), top connection (3) and lower contact (4); It is characterized in that: coiled tubing (1) afterbody cuts into a plurality of flaps, and every lobe is terminal T-shaped step-like; The external cylindrical surface of top connection (3) lower end is designed with a plurality of straight troughs, and coiled tubing (1) penetrates in the top connection (3), and simultaneously each lobe of afterbody turnup that makes progress is placed in the corresponding straight trough of top connection (3), and the terminal T shape of every lobe step surface hangs over straight trough groove rib top end; Lower contact (4) is connected with top connection (3) mid portion external screw thread through the upper end internal thread; Top connection (3) groove rib external diameter is identical with lower contact (4) internal diameter of cooperation; Lower contact (4) indoor design has a step, withstands on coiled tubing (1) the turnup lower end surface that the back forms in top connection (3) groove.
2. according to the described coiled tubing connector of claim 1, it is characterized in that: said coiled tubing (1) afterbody cuts into 8 lobes, and every lobe end is the wide T shape step of 15mm, and the external cylindrical surface of corresponding top connection (3) lower end is designed with 8 straight troughs.
3. according to the described coiled tubing connector of claim 1, it is characterized in that: said top connection (3) least significant end external surface is designed to taper seat, and the inner cylinder face of this taper seat and top connection (3) is an arc transition.
4. according to the described coiled tubing connector of claim 1, it is characterized in that: the straight trough groove depth of said top connection (3) is greater than coiled tubing (1) wall thickness 1mm.
5. according to the described coiled tubing connector of claim 1, it is characterized in that: between said coiled tubing (1) and top connection (3), top connection (3) and the lower contact (4) O RunddichtringO (2) is installed all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400820 CN202338212U (en) | 2011-10-20 | 2011-10-20 | Continuous oil pipe connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400820 CN202338212U (en) | 2011-10-20 | 2011-10-20 | Continuous oil pipe connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338212U true CN202338212U (en) | 2012-07-18 |
Family
ID=46486905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120400820 Expired - Fee Related CN202338212U (en) | 2011-10-20 | 2011-10-20 | Continuous oil pipe connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338212U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256011A (en) * | 2013-06-04 | 2013-08-21 | 四川宏华石油设备有限公司 | Non-rotary connector used for connecting downhole electric module |
| CN104832084A (en) * | 2014-02-08 | 2015-08-12 | 中国石油化工股份有限公司 | Mechanized operation constant bit weight drilling plug method and pipe string |
| CN106703708A (en) * | 2016-12-30 | 2017-05-24 | 中国石油天然气集团公司 | Dented internal connector for coiled tubing |
| CN107288554A (en) * | 2017-08-02 | 2017-10-24 | 中国石油大学胜利学院 | A kind of novel continuous oil pipe counter-sunk screw connector and application method |
| CN109138856A (en) * | 2018-11-22 | 2019-01-04 | 重庆科技学院 | Coiled tubing connector |
| CN109630038A (en) * | 2019-01-14 | 2019-04-16 | 重庆科技学院 | The equal diameter drilling well coiled tubing connector of enlarged outside diameter |
| GB2569011A (en) * | 2017-10-05 | 2019-06-05 | Baker Hughes A Ge Co Llc | Coiled tubing connector with internal anchor and external seal |
| US10947790B2 (en) | 2017-10-05 | 2021-03-16 | Baker Hughes, A Ge Company, Llc | Coiled tubing connector with internal anchor and external seal |
-
2011
- 2011-10-20 CN CN 201120400820 patent/CN202338212U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256011A (en) * | 2013-06-04 | 2013-08-21 | 四川宏华石油设备有限公司 | Non-rotary connector used for connecting downhole electric module |
| CN103256011B (en) * | 2013-06-04 | 2016-06-15 | 四川宏华石油设备有限公司 | A kind of non-rotating joint connected for down-hole electrical module |
| CN104832084A (en) * | 2014-02-08 | 2015-08-12 | 中国石油化工股份有限公司 | Mechanized operation constant bit weight drilling plug method and pipe string |
| CN106703708A (en) * | 2016-12-30 | 2017-05-24 | 中国石油天然气集团公司 | Dented internal connector for coiled tubing |
| CN107288554A (en) * | 2017-08-02 | 2017-10-24 | 中国石油大学胜利学院 | A kind of novel continuous oil pipe counter-sunk screw connector and application method |
| CN107288554B (en) * | 2017-08-02 | 2023-06-30 | 山东石油化工学院 | Novel coiled tubing countersunk screw connector and use method |
| GB2569011B (en) * | 2017-10-05 | 2021-03-31 | Baker Hughes A Ge Co Llc | Coiled tubing connector with internal anchor and external seal |
| GB2569011A (en) * | 2017-10-05 | 2019-06-05 | Baker Hughes A Ge Co Llc | Coiled tubing connector with internal anchor and external seal |
| US10947790B2 (en) | 2017-10-05 | 2021-03-16 | Baker Hughes, A Ge Company, Llc | Coiled tubing connector with internal anchor and external seal |
| CN109138856A (en) * | 2018-11-22 | 2019-01-04 | 重庆科技学院 | Coiled tubing connector |
| CN109138856B (en) * | 2018-11-22 | 2023-11-10 | 重庆科技学院 | coiled tubing connector |
| CN109630038A (en) * | 2019-01-14 | 2019-04-16 | 重庆科技学院 | The equal diameter drilling well coiled tubing connector of enlarged outside diameter |
| CN109630038B (en) * | 2019-01-14 | 2023-08-29 | 重庆科技学院 | Equal diameter drilling coiled tubing connector with enlarged outer diameter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20121020 |