CN202731769U - Double-cone-surface double-shoulder thread drilling rig - Google Patents
Double-cone-surface double-shoulder thread drilling rig Download PDFInfo
- Publication number
- CN202731769U CN202731769U CN 201220256009 CN201220256009U CN202731769U CN 202731769 U CN202731769 U CN 202731769U CN 201220256009 CN201220256009 CN 201220256009 CN 201220256009 U CN201220256009 U CN 201220256009U CN 202731769 U CN202731769 U CN 202731769U
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- shoulder
- taper seat
- male connection
- screw thread
- double
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Abstract
The utility model provides a double-cone-surface double-shoulder thread drilling rig which is applied to the technical field of oil and natural gas drilling and extraction. Two ends of a drilling rig body are respectively provided with an external thread joint and an internal thread joint. The external thread joint and the internal thread joint are both provided with main shoulders and auxiliary shoulders. Threads of the external thread joint and the internal thread joint are taper threads, and two ends of thread portions are provided with a first cone surface and a second cone surface. The root portion of the external thread joint is provided with an annular main shoulder, the end portion of the external thread joint is provided with an annular auxiliary shoulder, and threads are arranged between the first cone surface and the second cone surface. The first cone surface is in transitional connection with the top of external threads, and a second cone surface is in transitional connection with the bottom of the external threads. The double-cone-surface double-shoulder thread drilling rig has the advantages of reducing sensitivity coefficients of gaps in thread portions, greatly improving torsion resistance strength and bend resistance strength, and being simple in structure and easy to machine.
Description
Technical field
The utility model relates to oil, natural gas drilling downhole tool technical field, and particularly the coupling part of drilling tool specifically, is the two shoulder screw thread drilling tools of a kind of Double-conical-surface.
Background technology
At present, domestic deep-well, ultradeep well drilling well difficulty continue to increase, the production of Some Domestic drilling tool, usefulness and research unit take on to improve the torsional strength of drilling tool by increase by one at the thread connection small end with the same slave station of main shoulder structure, when using, the straight well section obtained certain effect, but in the complex drilling processes such as horizontal segment, side well section, because it is stressed more complicated, especially under the bending load effect, two shoulder drilling tool rigidity are larger, the easy fracture of internal and external screw thread.
The utility model content
The purpose of this utility model is: provide a kind of Double-conical-surface two shoulder screw thread drilling tools, the bending resistance of energy Effective Raise double shoulder tool joint, torsional property, whole intensity and application life of improving two shoulder drilling tools; Improve simultaneously the sealing performance at screw thread position, reduce the sensitivity factor of notch at screw thread position.Defective, rigidity are large, flexibility is lower, bending resistance, the limited deficiency of torsional property because internal and external threads itself exists to solve existing drilling tool.
The technical solution adopted in the utility model is: the two shoulder screw thread drilling tools of Double-conical-surface, comprise drilling tool body, male connection and female adapter, and there are respectively male connection and female adapter in the two ends of drilling tool body; Drilling tool body, male connection and female adapter have centre bore; Be provided with main shoulder and slave station shoulder in female adapter and the male connection; Main shoulder plane is vertical with center line with slave station shoulder plane; It is characterized in that: the screw thread of female adapter and male connection is taper thread, and there are the first taper seat and the second taper seat in the two ends of threaded portion; The root of male connection has the main shoulder of annular, plays the 38.1mm(1.5in of the main circular bead surface of distance from the main shoulder of male connection) the first taper seat arranged; The end of male connection is the annular secondary shoulder, plays 28.57mm(1.125in apart from the slave station shoulder from the annular secondary shoulder of male connection) the second taper seat arranged; Screw thread between the first taper seat and the second taper seat; The first taper seat of male connection connects with the transition of external screw thread crest, and the second taper seat of male connection connects with transition at the bottom of the external screw thread tooth; The tapering of the first taper seat, the second taper seat and screw thread is identical; Transition arc radius between main shoulder and the first taper seat is 3mm, transition arc radius between the first taper seat and the thread crest is 3mm, transition arc radius between the second taper seat and the Bottom of Thread is 3mm, and the transition arc radius between the second taper seat and the slave station shoulder is 3mm.
The beneficial effects of the utility model: the two shoulder screw thread drilling tools of the utility model Double-conical-surface are compared with common double shoulder drilling tool, have reduced screw thread position sensitivity factor of notch, and antitorque, flexural strength is significantly improved, and simple in structure, easily processing.
Description of drawings
Fig. 1 is the two shoulder screw thread drilling tool syndeton generalized sections of the utility model Double-conical-surface.
Among the figure, 1-male connection, 2-female adapter, 3-master's shoulder, 4-the first taper seat, 5-screw thread, 6-the second taper seat, 7-slave station shoulder.
The specific embodiment
Embodiment 1: take the two shoulder screw thread drilling tools of a Double-conical-surface as example, the utility model is described in further detail.
Consult Fig. 1.The two shoulder screw thread drilling tools of Double-conical-surface comprise drilling tool body, male connection and female adapter, and there are respectively male connection and female adapter in the two ends of drilling tool body.Drilling tool body, male connection and female adapter have a centre bore.Be provided with a main shoulder 3 and a slave station shoulder 7 in female adapter 2 and the male connection 1.It is all vertical with center line that main shoulder 3 planes and slave station are takeed on 7 planes.
The screw thread of female adapter 2 and male connection 1 is taper thread, and there are the first taper seat 4 and the second taper seat 6 in the two ends of threaded portion.The root of male connection 1 has the main shoulder 3 of annular, plays the 38.1mm(1.5in of the main circular bead surface 3 of distance from the main shoulder 3 of male connection 1) the first taper seat 4 arranged.The end of male connection 1 is annular secondary shoulder 7, plays 28.57mm(1.125in apart from slave station shoulder 7 from the annular secondary shoulder 7 of male connection 1) the second taper seat 6 arranged.Screw thread 5 between the first taper seat 4 and the second taper seat 6; The first taper seat 4 of male connection 1 connects with external screw thread 5 crest transition, and the second taper seat 6 of male connection 1 connects with transition at the bottom of external screw thread 5 teeth; The first taper seat 4, the second taper seat 6 are identical with the tapering of screw thread 5.Transition arc radius between main shoulder 3 and the first taper seat 4 is 3mm, transition arc radius between the first taper seat 4 and screw thread 5 crests is 3mm, transition arc radius between at the bottom of the second taper seat 6 and screw thread 5 teeth is 3mm, and the transition arc radius between the second taper seat 6 and the slave station shoulder 7 is 3mm.
Processing method: at first at drilling tool male connection 1, slave station shoulder 7 of female adapter 2 small ends processing, then process main circular bead surface 1, process the first taper seat 4 at the large end of screw thread, tapering is the thread taper direction, and length is 38.10mm; From thread crest cutted thread 5 until slave station takes on 7, be the 28.57mm place in secondary circular bead surface 7 distances of distance, from Bottom of Thread turning the second taper seat during threading; Shoulder 7 distances stop for 28.57mm from the Bottom of Thread cutted thread to slave station during machining internal thread, from internal thread crest car the second taper seat 6; The second taper seat 6 is takeed on 7 arc transition with slave station, and radius is 3mm.
Claims (1)
1. the two shoulder screw thread drilling tools of Double-conical-surface comprise drilling tool body, male connection and female adapter, and there are respectively male connection and female adapter in the two ends of drilling tool body; Drilling tool body, male connection and female adapter have centre bore; Be provided with main shoulder (3) and slave station shoulder (7) in female adapter (2) and the male connection (1); Main shoulder (3) plane is vertical with center line with slave station shoulder (7) plane; It is characterized in that: the screw thread of female adapter (2) and male connection (1) is taper thread, and there are the first taper seat (4) and the second taper seat (6) in the two ends of threaded portion; The root of male connection (1) has the main shoulder (3) of annular, and the 38.1mm that plays the main circular bead surface of distance (3) from the main shoulder (3) of male connection (1) has the first taper seat (4); The end of male connection (1) is annular secondary shoulder (7), and the 28.57mm that plays apart from slave station shoulder (7) from the annular secondary shoulder (7) of male connection (1) has the second taper seat (6); Screw thread (5) between the first taper seat (4) and the second taper seat (6); First taper seat (4) of male connection (1) connects with external screw thread (5) crest transition, and second taper seat (6) of male connection (1) connects with transition at the bottom of external screw thread (5) tooth; The first taper seat (4), the second taper seat (6) are identical with the tapering of screw thread (5); Transition arc radius between main shoulder (3) and the first taper seat (4) is 3mm, transition arc radius between the first taper seat (4) and screw thread (5) crest is 3mm, transition arc radius between at the bottom of the second taper seat (6) and screw thread (5) tooth is 3mm, and the transition arc radius between the second taper seat (6) and the slave station shoulder (7) is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256009 CN202731769U (en) | 2012-06-01 | 2012-06-01 | Double-cone-surface double-shoulder thread drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256009 CN202731769U (en) | 2012-06-01 | 2012-06-01 | Double-cone-surface double-shoulder thread drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731769U true CN202731769U (en) | 2013-02-13 |
Family
ID=47657481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220256009 Expired - Fee Related CN202731769U (en) | 2012-06-01 | 2012-06-01 | Double-cone-surface double-shoulder thread drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952391A (en) * | 2016-06-24 | 2016-09-21 | 江阴德玛斯特钻具有限公司 | Improved double-shouldered drill pipe joint |
-
2012
- 2012-06-01 CN CN 201220256009 patent/CN202731769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952391A (en) * | 2016-06-24 | 2016-09-21 | 江阴德玛斯特钻具有限公司 | Improved double-shouldered drill pipe joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210601 |