CN203925324U - A kind of tool joint of form of thread - Google Patents
A kind of tool joint of form of thread Download PDFInfo
- Publication number
- CN203925324U CN203925324U CN201420325837.9U CN201420325837U CN203925324U CN 203925324 U CN203925324 U CN 203925324U CN 201420325837 U CN201420325837 U CN 201420325837U CN 203925324 U CN203925324 U CN 203925324U
- Authority
- CN
- China
- Prior art keywords
- thread
- side angle
- tooth side
- male connection
- tool joint
- 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
- 238000005553 drilling Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 3
- 239000003209 petroleum derivative Substances 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000002929 anti-fatigue Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to the tool joint of the tool joint, particularly a kind of form of thread used in petroleum gas drilling process.It comprises male connection and female adapter, described male connection and female adapter have the screw thread of identical tapering vertically, it is characterized in that: the form of thread of described male connection and the form of thread of female adapter are all that distortion is trapezoidal, the first tooth side angle of described male connection form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm, the first tooth side angle of described female adapter form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm.It can be used for improving the torsional property of tool joint, quick upper button, raising abrasion resistance, improve anti-fatigue performance.
Description
Technical field
The utility model relates to the tool joint of the tool joint, particularly a kind of form of thread used in petroleum gas drilling process.
Background technology
In petroleum gas drilling process, drilling rod will bear the effect of the combined stresseses such as stretching, compression, bending, interior pressure, external pressure and thermal cycle for a long time in different well sections.Drill rod thread connecting portion is the weakest link, and due to tool joint work under bad environment, stressing conditions is complicated, is very easy to occur the problems such as thread root fracture, the leakage of burn into screw thread thorn.
The tool joint great majority that use are at present API standard tool joints, and the thread taper of common API tool joint thread is 1:6, and screw thread is triangle round thread, and pitch is 6.35mm.The basic stress of common API tool joint thread is concentrated, notch effect is serious, the tired sensitivity coefficient of screw thread is high, so easy generation fatigue or brittle fracture.The torsional strength of common API tool joint thread, flexible life deficiency are difficult to meet the drilling development requires of ultradeep well, extended reach well.The change of part has been made in the tool joint of other novel properties on the structure of joint and form of thread, for improving the torque fitting forms that adopt two shoulders of tool joint more, on form of thread, made the change of part, but be all to take triangle round thread as basic form of thread.Trapezoidal thread is compared with angular thread has the advantages that transmitting torque is large, anti-twisting property is strong, and tubing and casing generally adopts buttress thread, but petroleum drilling rod screw-thread does not have trapezoidal thread trapezoidal and change property at present.
Summary of the invention
The purpose of this utility model is to provide a kind of tool joint of form of thread, mainly solves the existing technical problem of above-mentioned prior art, and it can be used for improving the torsional property of tool joint, quick upper button, raising abrasion resistance, improve anti-fatigue performance.
For realizing above-mentioned technical purpose, technical scheme of the present invention is:
A kind of tool joint of form of thread, comprise male connection and female adapter, described male connection and female adapter have the screw thread of identical tapering vertically, it is characterized in that: the form of thread of described male connection and the form of thread of female adapter are all that distortion is trapezoidal, the first tooth side angle of described male connection form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm, the first tooth side angle of described female adapter form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm.
The tool joint of described form of thread, is characterized in that: the second tooth side angle that the first tooth side angle of described male connection form of thread equals the first tooth side angle of female adapter form of thread, male connection form of thread equals the second tooth side angle of female adapter form of thread.
The tool joint thread of Novel threaded tooth form of the present utility model torsional strength, fatigue resistance, on detain the aspects such as efficiency and all improve a lot.Its main advantage has:
1) torsional strength is high, and the helicitic texture that two shoulder drilling rod adopt the present invention to design will be higher by 10%～70% than common double shoulder drilling rod torsional strength, than common API tool joint torsional strength, improve 10%～150%.
2) improve the ratio of tool joint and drill pipe body anti-twisting property, can dwindle like this joint external diameter or increase joint hydrophthalmia internal diameter, improved the hydraulic characteristic of drilling rod.
3) improve the friction durability of joint.The raising of joint anti-twisting property can so that tool joint external diameter wear extent than the more great talent's use of demoting of API joint.
4) the shackle time in minimizing, improve drilling well operating efficiency.In drilling operation course, adopt the nipple of coarse pitch, can reduce while pulling out of hole up and down the shackle activity duration on drilling rod, greatly reduced the non-pure brill activity duration, improved drilling well operating efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
As Fig. 1, the utility model discloses a kind of tool joint of form of thread, it comprises male connection 1 and female adapter 2, male connection 1 and female adapter 2 have the screw thread of identical tapering vertically, the form of thread 11 of male connection 1 and the form of thread 21 of female adapter 2 are all that distortion is trapezoidal, the first tooth side angle 12 of male connection 1 form of thread 11 is 30 °～75 °, the second tooth side angle 13 is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm, the first tooth side angle 22 of female adapter 2 form of threads 21 is 30 °～75 °, the second tooth side angle 23 is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm.The first tooth side angle 12 of male connection 1 form of thread 11 equals the first tooth side angle 22 of female adapter 2 form of threads 21, and the second tooth side angle 13 of male connection 1 form of thread 11 equals the second tooth side angle 23 of female adapter 2 form of threads 21.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification all should be technology category of the present utility model.
Claims (2)
1. the tool joint of a form of thread, comprise male connection and female adapter, described male connection and female adapter have the screw thread of identical tapering vertically, it is characterized in that: the form of thread of described male connection and the form of thread of female adapter are all that distortion is trapezoidal, the first tooth side angle of described male connection form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm, the first tooth side angle of described female adapter form of thread is 30 °～75 °, the second tooth side angle is 0 °～-30 °, thread taper is 1:6～1:32, pitch >=6.35mm.
2. the tool joint of form of thread according to claim 1, is characterized in that: the second tooth side angle that the first tooth side angle of described male connection form of thread equals the first tooth side angle of female adapter form of thread, male connection form of thread equals the second tooth side angle of female adapter form of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325837.9U CN203925324U (en) | 2014-06-19 | 2014-06-19 | A kind of tool joint of form of thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325837.9U CN203925324U (en) | 2014-06-19 | 2014-06-19 | A kind of tool joint of form of thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925324U true CN203925324U (en) | 2014-11-05 |
Family
ID=51821153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420325837.9U Expired - Lifetime CN203925324U (en) | 2014-06-19 | 2014-06-19 | A kind of tool joint of form of thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018788A (en) * | 2014-06-19 | 2014-09-03 | 上海海隆石油钻具有限公司 | Drill rod joint with thread profiles |
-
2014
- 2014-06-19 CN CN201420325837.9U patent/CN203925324U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018788A (en) * | 2014-06-19 | 2014-09-03 | 上海海隆石油钻具有限公司 | Drill rod joint with thread profiles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |