CN103089165A - Double-step threaded buckle for connecting drill rod for well drilling - Google Patents
Double-step threaded buckle for connecting drill rod for well drilling Download PDFInfo
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- CN103089165A CN103089165A CN201110348358XA CN201110348358A CN103089165A CN 103089165 A CN103089165 A CN 103089165A CN 201110348358X A CN201110348358X A CN 201110348358XA CN 201110348358 A CN201110348358 A CN 201110348358A CN 103089165 A CN103089165 A CN 103089165A
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Abstract
The invention relates to the field of threaded buckles and discloses a double-step threaded buckle for connecting a drill rod for well drilling. The double-step threaded buckle comprises a column-shaped pin component and an annular sleeve component, male threads are arranged at the front end of the pin component, female threads are arranged on the inner wall of the sleeve component, and the pin component is connected with the sleeve component through threads. The double-step threaded buckle is characterized in that a first step surface and a second step surface are sequentially arranged on the pin component, the first step surface is located between the second step surface and the male threads, a first shoulder and a second shoulder are sequentially arranged on the inner wall of one end of the sleeve component connected with the pin component, the first shoulder is located between the second shoulder and the female threads, the first shoulder is meshed with the first step surface, and the second shoulder is meshed with the second step surface. The double-step threaded buckle for connecting the drill rod for the well drilling has the advantage of being capable of achieving multiple sealing and bearing higher strength and torque, meeting requirements for well drilling of deep wells and difficult wells fully, and simultaneously being capable of prolonging service life of the drilling rod effectively.
Description
Technical field
The present invention relates to the screw buckle field, relate in particular to a kind of double step screw buckle for connecting drilling well drilling bar.
Background technology
Along with the development of petroleum industry, the quality requirement of high-tech, high-quality downhole tool drilling rod is progressively improved, high moment of torsion high strength screw buckle in drilling process, is one of drilling tool method of reaching the drilling well instructions for use.Previous screw buckle is common API standard series screw buckle, can not satisfy under the complicated geological state and the use of deep-sea well.The screw buckle of above-mentioned standard has very large shortcoming usually, and sealing performance is bad, and common screw buckle especially easily produces the thread gluing phenomenon after mutually bonding, and their mechanical performance all can not satisfy the needs of deep-sea well and highly difficult drilling well completely simultaneously.
The drilling well drilling bar screw buckle needs high-precision lathe and the good impact-resistant blade of red hardness and high-intensity cutter in process of production.So change the helicitic texture form of joint, improve the impact resistance of joint, increase the anti-wear performance of joint, extend the application life of drilling tool, make it satisfy the needs of deep-sea well and highly difficult drilling well fully, saved iron ore, the 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, the object of the present invention is to provide a kind of simple in structurely, favorable sealing property, can satisfy the double step screw buckle that the drilling well drilling bar of deep-sea well and highly difficult drilling well needs is used.
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 comprises the pin parts of cylindricality and the cover parts of ring-type, the front end of described pin parts is provided with pin thread, the inwall of described cover parts is provided with negative thread, be threaded connection between described pin parts and described cover parts, it is characterized in that, be provided with successively First terrace and second step face on described pin parts, described First terrace is between second step face and pin thread, the end inwall that described cover parts are connected with the pin parts is provided with the first shoulder and the second shoulder successively, the first shoulder is between the second shoulder and negative thread, described the first shoulder and First terrace match, described the second shoulder and second step face match.
Preferably, the described pin parts external diameter that is provided with the front end of pin thread diminishes gradually towards cover parts direction.
Preferably, the described cover parts internal diameter that is provided with the part of negative thread becomes large gradually towards pin parts direction.
Preferably, the tapering of described pin thread and negative thread is 1: 10, and angle is 60 degree.
Preferably, the initial tooth section of described pin thread and negative thread is provided with large chamfering.
Preferably, be provided with stress relief grooves between described First terrace and second step face.
advantage of the present invention is: by adopting the unique design of double step, make First terrace and second step face respectively with the first shoulder and the second shoulder mutually coincide, can realize sealing, mutually spinning of pin thread and negative thread also can realize sealing, the pin ends also can be realized sealing with the inner of cover parts, multi-sealed design makes sealing performance of the present invention better, simultaneously such design, can be so that the present invention bears larger moment of torsion and larger intensity, mechanical performance of the present invention is better, drilling well drilling bar with the present invention's connection, mechanical property is very good, can satisfy the needs of deep-sea well and highly difficult drilling well fully, also greatly increased its application life simultaneously, the increase of drilling life of drill pipe, just can reduce the use of a large amount of iron and steel resources.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of pin parts;
Fig. 3 is the structural representation of cover parts.
Number in the figure is:
1, pin parts, 101, pin thread, 102, the First terrace, 103, the second step face, 104, stress relief grooves, 2, the cover parts, 201, negative thread, the 202, first shoulder, the 203, second shoulder.
The specific embodiment
Below in conjunction with drawings and the specific embodiments 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 and using, it comprises the pin parts 1 of cylindricality and cover parts 2 two parts of ring-type, front end at the pin parts is provided with pin thread 101, the inwall of cover parts is provided with negative thread 201, be threaded connection between pin parts and cover parts, the external diameter that the pin parts are provided with the front end of pin thread diminishes gradually towards cover parts direction, the internal diameter that the cover parts are provided with the part of negative thread becomes large gradually towards pin parts direction, the cover parts are set on the pin parts, and spin by screw thread, be provided with successively First terrace 102 and second step face 103 on the pin parts, described First terrace 102 is between described second step face 103 and described pin thread, an end inwall that is connected with the pin parts at the cover parts is provided with the first shoulder 202 and the second shoulder 203 successively, the first shoulder is between the second shoulder and negative thread, wherein the first shoulder and First terrace mutually coincide and seal, the second shoulder and second step face mutually coincide and seal, add simultaneously the sealing that mutually coincide and produce between screw thread, sell in addition ends and also can realize sealing with the inner of cover parts, so just can form simultaneously multi-sealed, product hermeticity can be more good, can effectively reduce the pressure release loss, constantly screwing in the middle of process simultaneously, because the first shoulder can have a supporting role to the First terrace, the second shoulder can have a supporting role to the second step face, by two supporting roles, the screw buckle of double step design just can be born larger intensity and moment of torsion, the drilling well drilling bar that uses the present invention to connect so just can satisfy the drilling well needs of deep-sea well and highly difficult well completely.
The tapering of pin thread of the present invention and negative thread is 1: 10, and angle is 60 degree.Simultaneously the initial tooth section of pin thread and negative thread is provided with large chamfering; design can prevent high pulling torque like this; can prevent simultaneously the generation of thread gluing effect; be provided with a stress relief grooves 104 between First terrace and second step face; the internal stress that produces when being used for discharging drilling well; reduce concentrating of stress, thereby can effectively protect drilling rod, extend the application life of drilling rod.
Outer wall at the double step screw buckle adopts surface sclerosis strengthening treatment process, makes it more wear-resisting, and relevant parameter of the present invention can reach: hardness 31-34HRC; Tensile strength 990-1120Mpa; Yield strength 890-995Mpa; Elongation per unit length 〉=16%; Ballistic work negative 20 is 110 joules of left and right when spending; Grain size is greater than 9 grades; The field trash sum is less than 21/2 grade.
The above is only the preferred embodiment of the present invention; should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the invention design; can also make some similar distortion and improvement, within these also should be considered as protection scope of the present invention.
Claims (6)
1. double step screw buckle that be used for to connect drilling well drilling bar, it comprises the pin parts of cylindricality and the cover parts of ring-type, the front end of described pin parts is provided with pin thread, the inwall of described cover parts is provided with negative thread, be threaded connection between described pin parts and described cover parts, it is characterized in that, be provided with successively First terrace and second step face on described pin parts, described First terrace is between second step face and described pin thread, the end inwall that described cover parts are connected with described pin parts is provided with the first shoulder and the second shoulder successively, the first shoulder is between the second shoulder and negative thread, described the first shoulder and First terrace match, described the second shoulder and second step face match.
2. a kind of double step screw buckle for connecting drilling well drilling bar according to claim 1, is characterized in that, the external diameter that described pin parts are provided with the front end of pin thread diminishes gradually towards cover parts direction.
3. a kind of double step screw buckle for connecting drilling well drilling bar according to claim 2, is characterized in that, the internal diameter that described cover parts are provided with the part of negative thread becomes large gradually towards pin parts direction.
4. a kind of double step screw buckle for connecting drilling well drilling bar according to claim 3, is characterized in that, the tapering of described pin thread and negative thread is 1: 10, and angle is 60 degree.
5. a kind of double step screw buckle for connecting drilling well drilling bar according to claim 4, is characterized in that, the initial tooth section of described pin thread and negative thread is provided with large chamfering.
6. the described a kind of double step screw buckle for connecting drilling well drilling bar of any one according to claim 1 to 5, is characterized in that, is provided with stress relief grooves between described First terrace and second step face.
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 true CN103089165A (en) | 2013-05-08 |
| CN103089165B CN103089165B (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110348358.XA Active CN103089165B (en) | 2011-11-08 | 2011-11-08 | A kind of double step screw buckle for connecting drilling well drilling bar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863782A (en) * | 2019-11-04 | 2020-03-06 | 河南中原重型锻压有限公司 | Drill rod stabilizer |
| 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 |
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| 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 |
| US20020033603A1 (en) * | 2000-09-15 | 2002-03-21 | Pallini Joseph W. | Threaded connector |
| CN201301671Y (en) * | 2008-10-24 | 2009-09-02 | 西南石油大学 | Double Shoulder Tool Joint |
| 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 |
| US20100308577A1 (en) * | 2009-06-04 | 2010-12-09 | National Oilwell Varco, L.P. | drill pipe system and method for using same |
| 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 |
-
2011
- 2011-11-08 CN CN201110348358.XA patent/CN103089165B/en active Active
Patent Citations (9)
| 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 |
| US20020033603A1 (en) * | 2000-09-15 | 2002-03-21 | Pallini Joseph W. | Threaded connector |
| CN201301671Y (en) * | 2008-10-24 | 2009-09-02 | 西南石油大学 | Double Shoulder Tool Joint |
| US20100308577A1 (en) * | 2009-06-04 | 2010-12-09 | National Oilwell Varco, L.P. | drill pipe system and method for using same |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863782A (en) * | 2019-11-04 | 2020-03-06 | 河南中原重型锻压有限公司 | Drill rod stabilizer |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103089165B (en) | 2016-11-09 |
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