CN201513641U - Bending resistant anti-compression low contact stress oil sleeve threading connector - Google Patents
Bending resistant anti-compression low contact stress oil sleeve threading connector Download PDFInfo
- Publication number
- CN201513641U CN201513641U CN2009202392115U CN200920239211U CN201513641U CN 201513641 U CN201513641 U CN 201513641U CN 2009202392115 U CN2009202392115 U CN 2009202392115U CN 200920239211 U CN200920239211 U CN 200920239211U CN 201513641 U CN201513641 U CN 201513641U
- Authority
- CN
- China
- Prior art keywords
- thread
- box cupling
- bending
- low contact
- contact stress
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses a bending resistant anti-compression low contact stress oil sleeve threading connector, which comprises a coupling. An internal thread is arranged on the coupling in threaded connection with a pipe body, the thread form on the coupling and the pipe body takes the shape of a hook tooth, and the thread parameters of the coupling and the pipe body are shown as follows: the angle of a thread guide surface ranges from 20 degrees to 45 degrees, and the angle of a bearing surface ranges from 0 degree to 5 degrees; and the thread form takes the hook tooth shape and the parameters setting thereof, thereby resulting in strong bending resistibility, high anti-compression level and low contact stress of the pipe body.
Description
Technical field
The utility model relates to a kind of oil casing threaded joint.
Background technique
In petroleum production, oil well pipe threads such as sleeve pipe, oil pipe and drilling rod are connected to tubing string, tubing string will bear the effect of different composite stress such as stretching, compression, bending, interior pressure, external pressure and thermal cycle for a long time in different well sections, service condition is very abominable, and the threaded connection place of tubing string is the weakest link.
At present, short round thread, oval screw thread and the buttress threads of adopting realize that tubing string is threaded more, but all there is inborn defective in they, and as short round thread, the ability of bearing tension load is lower; Buttress thread, the thread seal performance is lower.They are in the problem that exists aspect structural integrity that guarantees tubing string and the sealing integrity separately.
The model utility content
Technical problem to be solved in the utility model provides the oil casing threaded joint of a kind of counter-bending incompressible LCS.
For solving the problems of the technologies described above, the technical solution of the utility model is: the oil casing threaded joint of counter-bending incompressible LCS, comprise box cupling, described box cupling is provided with internal thread, the described box cupling body that has been threaded, the tooth form of screw thread is the hook tooth flute profile on described box cupling and the described body, and the thread parameter of described box cupling and described body is as follows:
The angular range of screw thread guide surface is 20 °～45 °;
The angular range of supporting plane is 0 °～-5 °.
As optimized technical scheme, on the described body on outside thread and the described box cupling tooth height of internal thread be 1.685mm.
As optimized technical scheme, be parallel to the axis of described body at the bottom of the crest of described screw thread and the tooth.
Owing to adopted technique scheme, the oil casing threaded joint of counter-bending incompressible LCS, comprise box cupling, described box cupling is provided with internal thread, the described box cupling body that has been threaded, the tooth form of screw thread is the hook tooth flute profile on described box cupling and the described body, and the thread parameter of described box cupling and described body is as follows: the angular range of screw thread guide surface is 20 °～45 °; The angular range of supporting plane is 0 °～-5 °: the tooth form of screw thread adopts hook tooth flute profile and parameter setting thereof, makes that strong, the incompressible level height of counter-bending ability, the contact stress of body are low.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the enlarged view at I place among Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the oil casing threaded joint of counter-bending incompressible LCS, comprise box cupling 1, described box cupling 1 is provided with internal thread, described box cupling 1 body 2 that has been threaded, the tooth form of screw thread is the hook tooth flute profile on described box cupling 1 and the described body 2, and the thread parameter of described box cupling 1 and described body 2 is as follows: the angular range of screw thread guide surface 4 is 20 °～45 °; The angular range of screw thread supporting plane 3 is 0 °～-5 °; On the described body 2 on outside thread and the described box cupling 1 the tooth height of internal thread be 1.685mm; The axis that is parallel to described body 2 at the bottom of the crest of described screw thread and the tooth.
The angular range of screw thread guide surface 4 is 20 °～45 °, and the angular range of screw thread supporting plane 3 is 0 °～-5 °, makes the joint of body 2 and box cupling 1 carry following all have preferable performance, internal pressure strength and external-pressure resistance height outside high compression and high bending; The axis that is parallel to described body 2 at the bottom of the crest of screw thread and the tooth, on had better make-up when detaining.
Above-described only is preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, distortion of making and improvement also should be considered as protection domain of the present utility model.
Claims (3)
1. the oil casing threaded joint of counter-bending incompressible LCS, comprise box cupling, described box cupling is provided with internal thread, the described box cupling body that has been threaded, it is characterized in that, the tooth form of screw thread is the hook tooth flute profile on described box cupling and the described body, and the thread parameter of described box cupling and described body is as follows:
The angular range of screw thread guide surface is 20 °～45 °;
The angular range of supporting plane is 0 °～-5 °.
2. the oil casing threaded joint of counter-bending incompressible LCS as claimed in claim 1 is characterized in that: on the described body on outside thread and the described box cupling tooth height of internal thread be 1.685mm.
3. the oil casing threaded joint of counter-bending incompressible LCS as claimed in claim 1 is characterized in that: the axis that is parallel to described body at the bottom of the crest of described screw thread and the tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202392115U CN201513641U (en) | 2009-09-29 | 2009-09-29 | Bending resistant anti-compression low contact stress oil sleeve threading connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202392115U CN201513641U (en) | 2009-09-29 | 2009-09-29 | Bending resistant anti-compression low contact stress oil sleeve threading connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513641U true CN201513641U (en) | 2010-06-23 |
Family
ID=42485052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202392115U Expired - Lifetime CN201513641U (en) | 2009-09-29 | 2009-09-29 | Bending resistant anti-compression low contact stress oil sleeve threading connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900378A (en) * | 2012-09-05 | 2013-01-30 | 中国石油天然气集团公司 | Connecting structure of steel joint and aluminium alloy drill pipe body |
-
2009
- 2009-09-29 CN CN2009202392115U patent/CN201513641U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900378A (en) * | 2012-09-05 | 2013-01-30 | 中国石油天然气集团公司 | Connecting structure of steel joint and aluminium alloy drill pipe body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202039782U (en) | Anti-bending casing pipe threaded connection structure | |
| CN101063502A (en) | Anticompress and anti-bending shouldered hook-shape teeth screwed connection structure | |
| CN206158608U (en) | Special screwed joint of high temperature high pressure gas well oil expenses sleeve pipe | |
| CN201013257Y (en) | Oil pipe coupling | |
| CN201513641U (en) | Bending resistant anti-compression low contact stress oil sleeve threading connector | |
| CN202125258U (en) | Oil sleeve connector with high sealing performance and thread-gluing resistance | |
| CN101899953A (en) | Thread joint structure for high-performance oil casing | |
| CN104018788A (en) | Drill rod joint with thread profiles | |
| CN102852466B (en) | Special buttress thread oil sleeve connecting joint | |
| CN204082029U (en) | A kind of oil bushing threaded connector of high torque resistant high leakproofness | |
| CN202689964U (en) | Casing thread connecting structure for heat production well | |
| CN203453662U (en) | Connection structure of corrugated pipe and pipe fitting | |
| CN202348139U (en) | Drilling pipe adapter structure used for petroleum drilling | |
| CN2886276Y (en) | Anti-compression and anti-bending hook took screw thread connection structure | |
| CN201705230U (en) | Special threading connector for sleeve with small external diameter | |
| CN204238870U (en) | A kind of drill rod connector | |
| CN201059164Y (en) | Novel torsion-resistant disconnecting-proof pumping rod | |
| CN103162029A (en) | Pipe connector of anchor ear type quick-change pipeline | |
| CN203403831U (en) | Direct-connecting oil casing pipe threaded connector | |
| CN201763267U (en) | Anti-bending oil sleeve threaded connection structure | |
| CN101864906A (en) | Bending-resistant oil casing threaded connection structure | |
| CN203202460U (en) | Hoop type quick-changing pipeline pipe-connecting device | |
| CN203925324U (en) | A kind of tool joint of form of thread | |
| CN206206838U (en) | A kind of box cupling for preventing Oil spills | |
| CN201406993Y (en) | Direct-connected oil and gas well pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yangzhou Lontrin Steel Tube Co., Ltd. Assignor: Shandong Molong Petroleum Machinery Co., Ltd. Contract record no.: 2017370000030 Denomination of utility model: Bending resistant anti-compression low contact stress oil sleeve threading connector Granted publication date: 20100623 License type: Common License Record date: 20170426 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |
|
| CX01 | Expiry of patent term |