CN206205816U - A kind of oil pipes box cupling for reducing friction - Google Patents
A kind of oil pipes box cupling for reducing friction Download PDFInfo
- Publication number
- CN206205816U CN206205816U CN201621291734.0U CN201621291734U CN206205816U CN 206205816 U CN206205816 U CN 206205816U CN 201621291734 U CN201621291734 U CN 201621291734U CN 206205816 U CN206205816 U CN 206205816U
- Authority
- CN
- China
- Prior art keywords
- box cupling
- oil
- oil pipes
- friction
- reducing friction
- 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
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model is related to a kind of oil attachment means, specifically provides a kind of oil pipes box cupling for reducing friction.The oil pipes box cupling of friction, including box cupling body are reduced, box cupling shoulder is used（60‑70）° chamfer design, screw threads for fastening chamfering is used（160‑170）° chamfer design.Make oil pipe during rountrip, box cupling shoulder is difficult to be collided with interface arrangement etc., will not be hung tag and reduce the friction with sleeve pipe column wall in casing string specification change location, meet the use requirement of oil field liner oil pipe.
Description
Technical field
The utility model is related to a kind of oil attachment means, specifically provides a kind of oil pipes for reducing friction and connects
Hoop.
Background technology
The tubing coupling that current most of oil fields use is 90 ° of common standard box cuplings of shoulder, the oil pipe of this box cupling
The easy blowout preventer packing unit in lower tubular column operation process is played, and at casing string fouling change or in the well with gradient or
Because the pipe end of neutral in the middle of the box cupling with sleeve pipe tubing string scratches in horizontal well, cause tubing coupling eccentric wear or blocked portion, together
When in oil well or water well operation, due to the chemical composition that stratum water quality or the water quality of injection are complicated, cause connecing for oil pipe column
Neutral gear position fouling, corrosion, while oil pipe pipe end screw thread chamfering inclined-plane is filled with box cupling thread pitch by foulant, lead in the middle of hoop
Oil pipe is caused to scrap or do repair process, furthermore, in oil field compression fracture acidizing treatment, acidifying substance is most easily from the box cupling of oil pipe column
The weak link of middle neutral gear position is corroded, and easily causes tubing coupling to be broken, and causes underground work accident.
Utility model content
For case above, the purpose of this utility model is that existing box cupling structure is improved, and from eccentric abrasion prevention, is prevented
Fouling, anticorrosion aspect and the relevant use of specific liner, improve chamfering and lengthen tubing coupling, and the special type for reaching oil field makes
Use demand.
It is that, up to this purpose, the utility model uses following technical scheme：
A kind of oil pipes box cupling for reducing friction, including box cupling body, box cupling shoulder are used（60-70）° chamfering sets
Meter, screw threads for fastening chamfering is used（160-170）° chamfer design.
The oil pipes box cupling of the reduction friction in the utility model, shoulder bevel is preferably 68 ° of designs, screw threads for fastening
Preferably 165 ° designs of chamfering.
The utility model devises a kind of oil pipes box cupling for reducing friction, and box cupling shoulder and fastening thread use
Angle is designed, and makes oil pipe during rountrip, and box cupling shoulder is difficult collide with interface arrangement etc., in casing string specification change position
The friction that will not be hung tag and reduce with sleeve pipe column wall is put, the use requirement of oil field liner oil pipe is met.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1 screw threads for fastening chamfering, 2 shoulder bevels.
Specific embodiment
With reference to accompanying drawing 1, the utility model is described in further detail：The oil pipes box cupling for reducing friction includes box cupling sheet
Shape of threads is processed at body, the two ends of box cupling body respectively, and box cupling shoulder is used（60-70）° chamfer design, screw threads for fastening chamfering is adopted
With（160-170）° chamfer design.The oil pipes box cupling simple structure for reducing friction of the present utility model, it is reasonable in design, it is full
The foot use requirement of oil field liner oil pipe.
Finally it should be noted that:Above example is only used to illustrate the technical solution of the utility model rather than it is limited
System；Although being described in detail to the utility model with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Specific embodiment of the present utility model can still be modified or some technical characteristics are equally replaced
Change；Without deviating from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
In the middle of scope.
Claims (3)
1. a kind of oil pipes box cupling for reducing friction, including box cupling body, it is characterised in that：In the box cupling body shoulder
Using 60 ° of -70 ° of chamfer designs, screw threads for fastening chamfering uses 160 ° of -170 ° of chamfer designs.
It is 2. as claimed in claim 1 to reduce the oil pipes box cupling for rubbing, it is characterised in that：The box cupling shoulder bevel is excellent
Elect 68 ° as.
It is 3. as claimed in claim 1 or 2 to reduce the oil pipes box cupling for rubbing, it is characterised in that：The screw threads for fastening is fallen
Angle is preferably 165 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291734.0U CN206205816U (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling for reducing friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291734.0U CN206205816U (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling for reducing friction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206205816U true CN206205816U (en) | 2017-05-31 |
Family
ID=58747166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621291734.0U Expired - Fee Related CN206205816U (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling for reducing friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206205816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401497A (en) * | 2016-11-29 | 2017-02-15 | 无锡金顶石油管材配件制造有限公司 | Friction-reduction special oil pipe coupling |
-
2016
- 2016-11-29 CN CN201621291734.0U patent/CN206205816U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401497A (en) * | 2016-11-29 | 2017-02-15 | 无锡金顶石油管材配件制造有限公司 | Friction-reduction special oil pipe coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20171129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |