CN203515361U - Sleeve type telescopic short joint for well completion pipe column - Google Patents
Sleeve type telescopic short joint for well completion pipe column Download PDFInfo
- Publication number
- CN203515361U CN203515361U CN201320532434.7U CN201320532434U CN203515361U CN 203515361 U CN203515361 U CN 203515361U CN 201320532434 U CN201320532434 U CN 201320532434U CN 203515361 U CN203515361 U CN 203515361U
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- sleeve
- outer sleeve
- type telescopic
- telescopic short
- inner sleeve
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Abstract
The utility model discloses a sleeve type telescopic short joint for a well completion pipe column. The sleeve type telescopic short joint comprises an outer sleeve and an inner sleeve arranged in the outer sleeve. A sealing plug is arranged in the outer sleeve and provided with a pin fixedly connected with the outer sleeve, a buffering space where hydraulic oil is stored is formed by the inner sleeve, the outer sleeve and the sealing plug, a limiting step is arranged in the outer sleeve, a boss matched with the limiting step is arranged on the end portion of the inner sleeve, the sealing plug and the boss are respectively provided with a plurality of annular sealing grooves, sealing rings are arranged in the sealing grooves, the cross sections of the annular sealing grooves are in trapezoid shapes, the bottoms of the trapezoid shapes are provided with chamfers, and the widths of groove openings of the annular sealing grooves are larger than the widths of the groove bottoms of the annular sealing grooves. The sleeve type telescopic short joint is simple in structure, reasonable in design, convenient to operate, good in sealing performance, safe and reliable.
Description
Technical field
The utility model relates to oilfield well completion technical field, is specifically related to a kind of completion tubular column sleeve type telescopic short piece.
Background technology
At present, known completion tubular column need to carry out length adjustment to it when completion practice, in production operation process, during as oil well metaideophone, thermal recovery etc., because the variation of temperature and pressure easily causes tubing length, change, at this moment need to carry out tubing string length compensation, to reduce the profit of tubing string.In order to carry out tubing string length compensation, all need in tubing string, add expansion coupling.Existing expansion coupling comprises telescopic joint, key slot type expansion coupling, locate mode expansion coupling, adjustable type expansion coupling and thermally expansive expansion coupling.Although these expansion coupling functions are many, complex structure, manufacture craft is loaded down with trivial details, and sealing is relatively poor, and cost is higher.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, provides a kind of simple in structure, reasonable in design, convenient operation, good airproof performance, safe and reliable completion tubular column sleeve type telescopic short piece.
Its technical scheme is: completion tubular column sleeve type telescopic short piece, comprise outer sleeve and be arranged on the inner sleeve in described outer sleeve, in described outer sleeve, be provided with seal plug, described seal plug is provided with the pin being fixedly connected with outer sleeve, described inner sleeve, outer sleeve and seal plug form the cushion space that stores hydraulic oil, in described outer sleeve, be provided with limited step, the end of described inner sleeve is provided with the boss matching with limited step, described seal plug and boss are provided with a plurality of annular seal grooves, in described annular seal groove, be provided with sealing ring, the cross section of described annular seal groove is that bottom has the trapezoidal of fillet, the width of rebate of described annular seal groove is greater than the width of bottom land.
The end of described inner sleeve is provided with cushion rubber bumper.
Described outer sleeve is provided with a plurality of annular grooves.
The formed angle of the inwall of described annular seal groove and bottom land is greater than 90 degree and is less than 120 degree.
The utility model compared with prior art, has the following advantages: simple in structure, reasonable in design, and convenient operation, good airproof performance, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the system schematic of a kind of embodiment of the utility model;
Fig. 2 is the structure enlarged drawing at the utility model annular seal groove place.
The specific embodiment
See figures.1.and.2, completion tubular column sleeve type telescopic short piece, comprise outer sleeve 1 and be arranged on the inner sleeve 2 in described outer sleeve 1, in described outer sleeve 2, be provided with seal plug 3, described seal plug 3 is provided with the pin 4 being fixedly connected with outer sleeve 1, described inner sleeve 2, outer sleeve 1 and seal plug 3 form the cushion space 5 that stores hydraulic oil, in described outer sleeve 1, be provided with limited step 6, the end of described inner sleeve 2 is provided with the boss 7 matching with limited step 6, described seal plug 3 and boss 7 are provided with a plurality of annular seal grooves 8, in described annular seal groove 8, be provided with sealing ring 9, the cross section of described annular seal groove 8 is that bottom has the trapezoidal of fillet, the width of rebate of described annular seal groove 8 is greater than the width of bottom land.
The end of described inner sleeve 2 is provided with cushion rubber bumper 10.In the time of preventing inner sleeve 2 with respect to outer sleeve 1 motion by cushion rubber bumper 10, it is produced to rigid friction, safe and reliable, can increase the service life.
Described outer sleeve 1 is provided with a plurality of annular grooves 11.Can not only reduce costs like this, and can alleviate overall weight, result of use is good.
The formed angle of the inwall of described annular seal groove 8 and bottom land is greater than 90 degree and is less than 120 degree.Can play better sealing effectiveness like this.
By annular seal groove 8 is set to the form of structure that width of rebate is greater than the width of bottom land, can make sealing ring 9 when inner sleeve 2 moves with respect to outer sleeve 1, compressed and fill up annular seal groove 8, and reduced the distortion of sealing ring 9 at bottom land place, in the direction set of the screen resilience of sealing ring 9 integral body, point to notch like this, thereby improved sealing, result of use is better.In use, in running string, be lowered to Telescopic short piece, inner sleeve 2 is free to slide and plays the depth compensation effect to tubing string in cushion space 5, by limited step 6 and the boss 7 matching, and seal plug 3 can play axial limiting effect to inner sleeve 2, result of use is good.
The utility model is simple in structure, reasonable in design, convenient operation, and good airproof performance, safe and reliable.
Claims (4)
1. completion tubular column sleeve type telescopic short piece, comprise outer sleeve and be arranged on the inner sleeve in described outer sleeve, it is characterized in that: in described outer sleeve, be provided with seal plug, described seal plug is provided with the pin being fixedly connected with outer sleeve, described inner sleeve, outer sleeve and seal plug form the cushion space that stores hydraulic oil, in described outer sleeve, be provided with limited step, the end of described inner sleeve is provided with the boss matching with limited step, described seal plug and boss are provided with a plurality of annular seal grooves, in described annular seal groove, be provided with sealing ring, the cross section of described annular seal groove is that bottom has the trapezoidal of fillet, the width of rebate of described annular seal groove is greater than the width of bottom land.
2. completion tubular column sleeve type telescopic short piece according to claim 1, is characterized in that: the end of described inner sleeve is provided with cushion rubber bumper.
3. completion tubular column sleeve type telescopic short piece according to claim 1, is characterized in that: described outer sleeve is provided with a plurality of annular grooves.
4. completion tubular column sleeve type telescopic short piece according to claim 1, is characterized in that: the formed angle of the inwall of described annular seal groove and bottom land is greater than 90 degree and is less than 120 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532434.7U CN203515361U (en) | 2013-08-29 | 2013-08-29 | Sleeve type telescopic short joint for well completion pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532434.7U CN203515361U (en) | 2013-08-29 | 2013-08-29 | Sleeve type telescopic short joint for well completion pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515361U true CN203515361U (en) | 2014-04-02 |
Family
ID=50374308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532434.7U Expired - Fee Related CN203515361U (en) | 2013-08-29 | 2013-08-29 | Sleeve type telescopic short joint for well completion pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939307A (en) * | 2017-12-20 | 2018-04-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of long telescopic distance compensation pipe nipple and compensation method |
| CN110410000A (en) * | 2018-04-27 | 2019-11-05 | 中国石油化工股份有限公司 | A kind of underground aided drilling tool |
-
2013
- 2013-08-29 CN CN201320532434.7U patent/CN203515361U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939307A (en) * | 2017-12-20 | 2018-04-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of long telescopic distance compensation pipe nipple and compensation method |
| CN107939307B (en) * | 2017-12-20 | 2023-11-03 | 中国石油天然气集团有限公司 | Long-telescoping-distance compensation short joint and compensation method |
| CN110410000A (en) * | 2018-04-27 | 2019-11-05 | 中国石油化工股份有限公司 | A kind of underground aided drilling tool |
| CN110410000B (en) * | 2018-04-27 | 2020-10-20 | 中国石油化工股份有限公司 | Well drilling assisting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |