CN206144483U - Anti sulphur drilling rod of high strength - Google Patents
Anti sulphur drilling rod of high strength Download PDFInfo
- Publication number
- CN206144483U CN206144483U CN201620735100.3U CN201620735100U CN206144483U CN 206144483 U CN206144483 U CN 206144483U CN 201620735100 U CN201620735100 U CN 201620735100U CN 206144483 U CN206144483 U CN 206144483U
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- drilling rod
- shoulder
- thread
- screw thread
- high strength
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Abstract
The utility model relates to an anti sulphur drilling rod of high strength adopts CY120N anti sulphur drilling rod of high strength, and anti sulphur performance surpasses IRP1.8 standard requirements, has reduced harmful elements such as P in the material, S, improves the content of elements such as mo in the steel, cr, can make the anti sulphur performance of whole of drilling rod obtain further improvement, it has increased a slave station shoulder through meshing department in pin thread tip and box main aspects simultaneously, the slave station shoulder forms two circular bead structures with the master shoulder promptly, master shoulder face and screw thread section produce certain interference fit, the slave station shoulder is then detain the locate function on just in time having certain assisting, thereby it realizes to guarantee the accurate of master shoulder face and screw thread section interference fit, furthermore, the slave station shoulder also can bear the part -load in operating condition, play certain overload protection effect, and can improve the torsional strength of drilling rod, the security of drilling rod has been guaranteed, the pin thread tip of drilling rod body is trapezoid table simultaneously, trapezoid table forms the enhancement section of pin thread tip, can improve the overall intensity of drilling rod.
Description
Technical field
This utility model is related to a kind of high strength sulfur resisting drilling rod, belongs to oil drill rocker technical field.
Background technology
In the drilling process of oil, natural gas, water source and mineral reserve, it is required for using drilling rod.Drilling rod passes through tool joint
Couple together, in During regular rotation, drilling rod will bear the effect of external and internal pressure, axial force, moment of flexure and moment of torsion simultaneously.
But common drilling rod intensity is not high, after life-time service, tool joint can frequently occur failure accidents so as to into
For the principal mode of drilling rod failure.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of intensity is high, the good high strength sulfur resisting of safety
Drilling rod.
What the purpose of this utility model was realized in：
A kind of high strength sulfur resisting drilling rod, it includes drilling rod body, and the periphery of the pin thread small end of the drilling rod body is provided with
External screw thread, the inwall at the big end of box of drilling rod body are provided with female thread, and the external screw thread of adjacent two drilling rods is engaged with female thread,
So that two drilling rods are coupled together, and drilling rod body opens up platform in the upper and lower ends of externally threaded upper and lower ends and female thread
The step of shoulder based on terrace, the wherein step of external screw thread lower end and female thread lower end, external screw thread upper end and female thread upper end is
Secondary shoulder, while the pin thread small end of drilling rod body is bucking ladder, the bucking ladder forms the strengthening segment of pin thread small end.
This utility model high strength sulfur resisting drilling rod has advantages below：
This utility model high strength sulfur resisting drilling rod adopts CY120N high strength sulfur resisting drilling rods, sulfur resistance to mark more than IRP1.8
Accurate requirement, reduces the harmful element such as P, S in material, improves the content of the element such as Mo, Cr in steel, can make the whole of drilling rod
Body sulfur resistance is further enhanced；
It increased a secondary shoulder, secondary shoulder and main shoulder by the engagement place at pin thread small end and the big end of box simultaneously
Dual stage shoulder structure is formed, main circular bead surface and thread segment produce certain interference fit, and secondary shoulder is then just with certain
Bit function is anchored in auxiliary, so as to ensure the accurate realization of main circular bead surface and thread segment interference fit, additionally, secondary shoulder is in work
Fractional load can be also born in state, certain overload protective function is played, and the torsional strength of drilling rod can also be improved, it is ensured that
The safety of drilling rod；
The pin thread small end of drilling rod body is bucking ladder simultaneously, the strengthening segment of the bucking ladder formation pin thread small end, Ke Yiti
The bulk strength of high drilling rod.
Description of the drawings
Structural representations of the Fig. 1 for this utility model high strength sulfur resisting drilling rod.
Fig. 2 is the enlarged drawing at the external screw thread of drilling rod body, female thread in Fig. 1.
In figure：Drilling rod body 1, external screw thread 2, female thread 3, main shoulder 4, secondary shoulder 5, bucking ladder 6.
Specific embodiment
Referring to Fig. 1 and Fig. 2, this utility model is related to a kind of high strength sulfur resisting drilling rod, including drilling rod body 1, the drilling rod
The periphery of the pin thread small end of body 1 is provided with external screw thread 2, and the inwall at the big end of box of drilling rod body 1 is provided with female thread 3, phase
The external screw thread 2 of adjacent two drilling rods is engaged with female thread 3 so that two drilling rods are coupled together, and drilling rod body 1 is in external screw thread 2
Upper and lower ends and the upper and lower ends of female thread 3 open up step surface, the wherein step of 3 lower end of 2 lower end of external screw thread and female thread
Based on shoulder 4, the step of 3 upper end of 2 upper end of external screw thread and female thread is secondary shoulder 5.
The main shoulder 4 forms dual stage shoulder structure with secondary shoulder 5, and main shoulder 4 and thread segment produce certain interference and match somebody with somebody
Close, and secondary shoulder 5 then just has in certain auxiliary and anchors bit function, so as to the interference for ensureing main shoulder 4 and thread segment is matched somebody with somebody
The accurate realization closed, additionally, secondary shoulder 5 in working order in can also bear fractional load, play certain overload protective function, and
And the torsional strength of drilling rod can also be improved, it is ensured that the safety of drilling rod.
Simultaneously the pin thread small end of drilling rod body 1 is bucking ladder 6, and the bucking ladder 6 forms the strengthening segment of pin thread small end, can be with
Improve the bulk strength of drilling rod.
Claims (1)
1. a kind of high strength sulfur resisting drilling rod, it is characterised in that：It includes drilling rod body（1）, the drilling rod body（1）Pin thread it is little
The periphery at end is provided with external screw thread（2）, drilling rod body（1）The inwall at the big end of box be provided with female thread（3）, adjacent two brills
The external screw thread of bar（2）With female thread（3）Engagement so that two drilling rods are coupled together, and drilling rod body（1）In external screw thread（2）
Upper and lower ends and female thread（3）Upper and lower ends open up step surface, wherein external screw thread（2）Lower end and female thread（3）Lower end
Step based on shoulder（4）, external screw thread（2）Upper end and female thread（3）The step of upper end is secondary shoulder（5）, while drilling rod body
（1）Pin thread small end be bucking ladder（6）, the bucking ladder（6）Form the strengthening segment of pin thread small end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735100.3U CN206144483U (en) | 2016-07-13 | 2016-07-13 | Anti sulphur drilling rod of high strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620735100.3U CN206144483U (en) | 2016-07-13 | 2016-07-13 | Anti sulphur drilling rod of high strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144483U true CN206144483U (en) | 2017-05-03 |
Family
ID=58617710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620735100.3U Active CN206144483U (en) | 2016-07-13 | 2016-07-13 | Anti sulphur drilling rod of high strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014279A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | High-strength anti-sulfur drill rod |
-
2016
- 2016-07-13 CN CN201620735100.3U patent/CN206144483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014279A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | High-strength anti-sulfur drill rod |
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