CN103089165B - A kind of double step screw buckle for connecting drilling well drilling bar - Google Patents
A kind of double step screw buckle for connecting drilling well drilling bar Download PDFInfo
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- CN103089165B CN103089165B CN201110348358.XA CN201110348358A CN103089165B CN 103089165 B CN103089165 B CN 103089165B CN 201110348358 A CN201110348358 A CN 201110348358A CN 103089165 B CN103089165 B CN 103089165B
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Abstract
nullThe present invention relates to screw buckle field，Disclose a kind of double step screw buckle for connecting drilling well drilling bar，They pin parts including cylindricality and ring-type set parts，The front end of described pin parts is provided with pin thread，The inwall of described set parts is provided with female thread，It is threaded connection between described pin parts and described set parts，It is characterized in that，First terrace and second step face it is sequentially provided with on described pin parts，Described First terrace is between described second step face and pin thread，One end inwall that described set parts are connected with described pin parts is sequentially provided with first shoulder and the second shoulder，Described first shoulder is between described second shoulder and female thread，Described first shoulder matches with described First terrace，Described second shoulder matches with described second step face，It is an advantage of the invention that can realize multi-sealed，And higher intensity and moment of torsion can be undertaken，The drilling well needs of deep-well and highly difficult well are fully met，Can effectively extend the service life of drilling rod simultaneously.
Description
Technical field
The present invention relates to screw buckle field, particularly relate to a kind of for connecting drilling well drilling bar
Double step screw buckle.
Background technology
Along with the development of petroleum industry, to high-tech, the matter of high-quality downhole tool drilling rod
Amount requires to step up, and high torque high intensity screw buckle, in drilling process, is drilling tool
Reach one of drilling well method using requirement.Previous screw buckle is common API standard
Series screw buckle, it is impossible to enough meet under complicated geological state and deep-sea well uses.Above-mentioned mark
Accurate screw buckle is usually constructed with the biggest shortcoming, and sealing property is bad, and common spiral shell
After stricture of vagina is buckled in mutually bonding, it is particularly easy to produce thread gluing phenomenon, simultaneously their mechanicalness
All can not can meet deep-sea well and the needs of highly difficult drilling well completely.
Drilling well drilling bar screw buckle needs high-precision lathe and red hardness good in process of production
Impact-resistant blade and the cutter of high intensity.So changing the helicitic texture form of joint,
Improve the impact resistance of joint, increase the anti-wear performance of joint, extend the use of drilling tool
Life-span so that it is fully meet deep-sea well and the needs of highly difficult drilling well, saved iron ore,
Iron and steel equal energy source just becomes a current important subject.
Summary of the invention
In order to solve the problem of above-mentioned existence, it is an object of the invention to provide a kind of structure
Simply, favorable sealing property, can meet deep-sea well and the brill of highly difficult drilling well needs
The double step screw buckle of well drilling rod.
To achieve these goals, the present invention is by the following technical solutions:
A kind of double step screw buckle for connecting drilling well drilling bar, it includes the pin portion of cylindricality
Part and ring-type set parts, the front end of described pin parts is provided with pin thread, described set parts
Inwall be provided with female thread, between described pin parts and described set parts by screw thread even
Connect, it is characterised in that on described pin parts, be sequentially provided with First terrace and second step
Face, described First terrace between second step face and pin thread, described set parts
One end inwall being connected with pin parts is sequentially provided with first shoulder and the second shoulder, First
Take between the second shoulder and female thread, described first shoulder and First terrace kissing
Closing, described second shoulder matches with second step face.
Preferably, described pin parts be provided with pin thread front end external diameter towards set parts side
To tapering into.
Preferably, described set parts are provided with the internal diameter of part of female thread towards pin parts side
To becoming larger.
Preferably, the tapering of described pin thread and female thread is 1: 10, and angle is
60 degree.
Preferably, the initial tooth portion of described pin thread and female thread is provided with big chamfering.
Preferably, it is provided with Stress Release between described First terrace and second step face
Groove.
The invention have the advantage that the unique design by using double step so that First
Terrace and second step face are the most identical with first shoulder and the second shoulder respectively, Ke Yishi
Now sealing, pin thread and mutually spinning of female thread can also realize sealing, and sell component end
Portion can also realize sealing with the inner of set parts, and multi-sealed design makes the present invention's
Sealing property is more preferable, and the most such design, so that the present invention undertakes bigger torsion
Square and bigger intensity, the mechanical performance of the present invention is more preferable, the drilling well connected by the present invention
Drilling rod, mechanical property is the best, can fully meet deep-sea well and the need of highly difficult drilling well
Want, also considerably increase its service life, the increase of drilling life of drill pipe simultaneously, so that it may
To reduce the use of a large amount of iron and steel resources.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of pin parts；
Fig. 3 is the structural representation of set parts.
Figure is numbered:
1, pin parts, 101, pin thread, 102, First terrace, 103, second
Terrace, 104, stress relief grooves, 2, set parts, 201, female thread, 202, first
Shoulder, the 203, second shoulder.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail
Explanation.
As Figure 1-3, a kind of double step screw buckle for connecting drilling well drilling bar,
They pin parts 1 including cylindricality and ring-type set parts 2 two parts, before pin parts
End is provided with pin thread 101, and the inwall of set parts is provided with female thread 201, pin parts and set
Being threaded connection between parts, pin parts are provided with the external diameter of the front end of pin thread towards set
Parts direction tapers into, and set parts are provided with the internal diameter of the part of female thread towards pin parts
Direction becomes larger, and set parts are set on pin parts, and are spun by screw thread, at pin
First terrace 102 and second step face 103, described First it is sequentially provided with on parts
Terrace 102 is between described second step face 103 and described pin thread, at set parts
One end inwall being connected with pin parts is sequentially provided with first shoulder 202 and the second shoulder 203,
First shoulder between the second shoulder and female thread, wherein first shoulder and first step
Face mutually coincide and seals, and the second shoulder and second step face mutually coincide and seal, with
Time plus the sealing produced that mutually coincide between screw thread, also have pin ends and set portion
The inner of part can also realize sealing, and thus can concurrently form multi-sealed, product
Sealing property is the best, can effectively reduce pressure release loss, simultaneously in constantly rotation
In the middle of tight process, owing to first shoulder can have a supporting role to First terrace, the
Two shoulders can have a supporting role to second step face, by two supporting roles, double
The screw buckle of step design just can undertake bigger intensity and moment of torsion, so uses this
The drilling well drilling bar of bright connection just can meet deep-sea well and the drilling well of highly difficult well completely
Need.
The pin thread of the present invention and the tapering of female thread are 1: 10, and angle is 60 degree.
The initial tooth portion of pin thread and female thread is provided with big chamfering simultaneously, so designs and can prevent
High pulling torque, is possible to prevent the generation of thread gluing effect simultaneously, First terrace and second
Being provided with a stress relief grooves 104 between terrace, the inside produced during for discharging drilling well should
Power, reduces the concentration of stress, such that it is able to be effectively protected drilling rod, extends making of drilling rod
Use the life-span.
Outer wall at double step screw buckle uses Surface hardened layer strengthening treatment process so that it is more
Add is wear-resisting, and the relevant parameter of the present invention can reach: hardness 31-34HRC；Tension is strong
Degree 990-1120Mpa；Yield strength 890-995Mpa；Elongation percentage >=16%；Ballistic work
It it is about 110 joules when negative 20 degree；Grain size is more than 9 grades；Field trash sum is less than
21/2 grade.
The above is only the preferred embodiment of the present invention, it is noted that for ability
For the those of ordinary skill of territory, without departing from the concept of the premise of the invention, also may be used
To make some similar deformation and improvement, these also should be regarded as protection scope of the present invention
Within.
Claims (5)
1., for connecting a double step screw buckle for drilling well drilling bar, it includes the pin portion of cylindricality
Part and ring-type set parts, the front end of described pin parts is provided with pin thread, described set parts interior
Wall is provided with female thread, is threaded connection, its feature between described pin parts and described set parts
It is, described pin parts are sequentially provided with First terrace and second step face, described First
Terrace is between second step face and described pin thread, and described set parts are with described pin parts even
One end inwall connect is sequentially provided with first shoulder and the second shoulder, and first shoulder is positioned at the second shoulder
With between female thread, described first shoulder matches with First terrace, described second shoulder with
Second step face matches, and the initial tooth portion of described pin thread and female thread is provided with big chamfering.
A kind of double step spiral shell for connecting drilling well drilling bar the most according to claim 1
Stricture of vagina button, it is characterised in that described pin parts are provided with the external diameter of the front end of pin thread towards set parts
Direction tapers into.
A kind of double step spiral shell for connecting drilling well drilling bar the most according to claim 2
Stricture of vagina button, it is characterised in that described set parts are provided with the internal diameter of the part of female thread towards pin parts
Direction becomes larger.
A kind of double step spiral shell for connecting drilling well drilling bar the most according to claim 3
Stricture of vagina button, it is characterised in that the tapering of described pin thread and female thread is 1: 10, angle
It is 60 degree.
One the most as claimed in any of claims 1 to 4 is used for connecting drilling well
The double step screw buckle of drilling rod, it is characterised in that described First terrace and second step face it
Between be provided with stress relief grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110348358.XA CN103089165B (en) | 2011-11-08 | 2011-11-08 | A kind of double step screw buckle for connecting drilling well drilling bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110348358.XA CN103089165B (en) | 2011-11-08 | 2011-11-08 | A kind of double step screw buckle for connecting drilling well drilling bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089165A CN103089165A (en) | 2013-05-08 |
| CN103089165B true CN103089165B (en) | 2016-11-09 |
Family
ID=48202244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110348358.XA Active CN103089165B (en) | 2011-11-08 | 2011-11-08 | A kind of double step screw buckle for connecting drilling well drilling bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103089165B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901090A (en) * | 2019-11-19 | 2021-06-04 | 扬州埃尔智能设备有限公司 | High-strength low-current-consumption energy-saving connecting buckle |
| CN112901089A (en) * | 2019-11-19 | 2021-06-04 | 扬州埃尔智能设备有限公司 | High-strength low-current-consumption energy-saving intelligent drilling tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438953A (en) * | 1981-02-27 | 1984-03-27 | Hughes Tool Company | Tool joint bench mark |
| US6047997A (en) * | 1996-05-15 | 2000-04-11 | Iberia Threading, Inc. | Threaded connection with radiused surfaces |
| US6056324A (en) * | 1998-05-12 | 2000-05-02 | Dril-Quip, Inc. | Threaded connector |
| CN201513136U (en) * | 2009-09-27 | 2010-06-23 | 无锡西姆莱斯石油专用管制造有限公司 | Double-shoulder drill pipe joint |
| CN101975032A (en) * | 2010-10-28 | 2011-02-16 | 华东理工大学 | High efficiency torsion resistant drill rod joint with good sealing performance |
| CN202280432U (en) * | 2011-11-08 | 2012-06-20 | 南通永大管业股份有限公司 | Double-step threaded buckle used for connecting drilling well drilling rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478344B2 (en) * | 2000-09-15 | 2002-11-12 | Abb Vetco Gray Inc. | Threaded connector |
| CN201301671Y (en) * | 2008-10-24 | 2009-09-02 | 西南石油大学 | Double-shoulder drill pipe joint |
| US8678447B2 (en) * | 2009-06-04 | 2014-03-25 | National Oilwell Varco, L.P. | Drill pipe system |
-
2011
- 2011-11-08 CN CN201110348358.XA patent/CN103089165B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438953A (en) * | 1981-02-27 | 1984-03-27 | Hughes Tool Company | Tool joint bench mark |
| US6047997A (en) * | 1996-05-15 | 2000-04-11 | Iberia Threading, Inc. | Threaded connection with radiused surfaces |
| US6056324A (en) * | 1998-05-12 | 2000-05-02 | Dril-Quip, Inc. | Threaded connector |
| CN201513136U (en) * | 2009-09-27 | 2010-06-23 | 无锡西姆莱斯石油专用管制造有限公司 | Double-shoulder drill pipe joint |
| CN101975032A (en) * | 2010-10-28 | 2011-02-16 | 华东理工大学 | High efficiency torsion resistant drill rod joint with good sealing performance |
| CN202280432U (en) * | 2011-11-08 | 2012-06-20 | 南通永大管业股份有限公司 | Double-step threaded buckle used for connecting drilling well drilling rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103089165A (en) | 2013-05-08 |
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