CN105952390A - Large-torque drill stem thread structure - Google Patents
Large-torque drill stem thread structure Download PDFInfo
- Publication number
- CN105952390A CN105952390A CN201610480054.1A CN201610480054A CN105952390A CN 105952390 A CN105952390 A CN 105952390A CN 201610480054 A CN201610480054 A CN 201610480054A CN 105952390 A CN105952390 A CN 105952390A
- Authority
- CN
- China
- Prior art keywords
- angle
- thread
- drill stem
- drilling rod
- thread segment
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 claims description 37
- 238000010276 construction Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a large-torque drill stem thread structure. The large-torque drill stem thread structure comprises a drill stem body and a thread section arranged at the end of the drill stem body, wherein the thread taper of the thread section is 1:16, a thread pitch of the thread section is 7.257 mm, a thread form angle of the thread section consists of an angle A and an angle B, the angle A is greater than the angle B, and the angle A is located at the front end of the angle B in the screwing direction of the thread section. Under the condition of same-thread large diameter D, the thread taper of the large-torque drill stem thread structure is designed to be1:16, and the torque bearing capability of the thread is improved. The large-torque drill stem thread structure facilitates operation and also improves the screwing speed of a drill stem. In addition, the resistance of the drill stem during construction is reduced, and construction is promoted.
Description
Technical field
The present invention relates to a kind of drilling rod, especially relate to a kind of high pulling torque threaded structure of drill rod.
Background technology
Drilling rod is the afterbody steel pipe with a chain for binding criminals stricture of vagina, is used for connecting rig landscape apparatus and being positioned at drilling well bottom boring mill
Equipment or bottom outlet device.The purposes of drilling rod is that drilling mud is transported to drill bit, and improve together with drill bit,
Reduce or rotate bottom outlet device.Drilling rod allows for bearing huge interior external pressure, distorts, bends and vibrate.
In the exploitation and extractive process of oil gas, drilling rod can be used for multiple times.
Therefore, helicitic texture is the important component part of drilling rod, refers to shown in Fig. 1, and Fig. 1 is traditional
The schematic diagram of threaded structure of drill rod, the thread form angle of existing threaded structure of drill rod is made up of A angle and B angle, institute
Stating the equal in magnitude of A angle and B angle, and be 30 °, Major Diam is D, and thread pitch is 6.35mm,
The tapering of screw thread is 1:6, and drilling rod clamp external diameter is D1, and drill pipe bore aperture is d1, described D1:D=1.25,
D1:D=0.4.The design of this kind of helicitic texture has a disadvantage in that in concrete application process
1) have some setbacks during male and female screwed tight, twist speed slowly, be not easy to operation；
2), during construction, drilling rod resistance is bigger；
3) moment of torsion that pitch is born is less.
Summary of the invention
It is an object of the invention to provide a kind of high pulling torque threaded structure of drill rod, it has high pulling torque, is easy to behaviour
Make and reduce the feature of drilling rod construction resistance, to solve the problems referred to above that in prior art, drilling rod exists.
For reaching this purpose, the present invention by the following technical solutions:
A kind of high pulling torque threaded structure of drill rod, it includes drilling rod body and is opened in described drilling rod body end
Thread segment, wherein, the tapering of the screw thread of described thread segment is 1:16, and the thread pitch of described thread segment is 7.257
mm。
Especially, the form of thread angle of described thread segment is made up of A angle and B angle, and described A angle is more than B angle,
The A angle described in direction that is screwed into along described thread segment is positioned at the front end at B angle.
Especially, described A angle is 45 °, and described B angle is 30 °.
Especially, the drilling rod clamp external diameter of described drilling rod body is D2, and the Major Diam of described thread segment is D,
D2:D=1.15.
Especially, the endoporus aperture of described drilling rod body is d2, and the Major Diam of described thread segment is D, d2:
D=0.55.
Beneficial effects of the present invention is, the most described high pulling torque threaded structure of drill rod exists as follows
Advantage:
1) in the case of identical Major Diam D, being 1:16 by the taper design of screw thread, screw thread bears torsion
The ability of square strengthens；
2) form of thread angle is made up of A angle and B angle, and described A angle is more than B angle, i.e. increases nose threads
Angle, improve its steering capability, make male and female screw thread guide when tightening more smooth and easy；
3) thread pitch is designed as 7.257mm, improves the stubborn button speed of drilling rod；
4) in the case of bearing equal moment of torsion, drilling rod clamp outer diameter D 2 is little compared with D1, drilling rod and body
The area of the transition conical surface reduces, and soil resistance during construction also reduces；
5) on the premise of ensureing screw thread effective stress sectional area, the endoporus aperture d2 larger compared with d1,
The resistance that mud flows in drilling rod diminishes, and flow increases, and is beneficial to construction；
6) due to endoporus aperture d2 larger, thickening amount when producing drilling rod reduces accordingly, the former material of body
Material length reduces, and saves production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional threaded structure of drill rod；
Fig. 2 is the schematic diagram of the high pulling torque threaded structure of drill rod that the specific embodiment of the invention 1 provides.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Referring to shown in Fig. 2, Fig. 2 is the high pulling torque drill rod thread knot that the specific embodiment of the invention 1 provides
The schematic diagram of structure.
In the present embodiment, a kind of high pulling torque threaded structure of drill rod includes drilling rod body 1 and is opened in described drilling rod
The thread segment 2 of body 1 end, wherein, the form of thread angle of described thread segment 2 is made up of A angle and B angle,
Described A angle is more than B angle, and the A angle described in direction that is screwed into along described thread segment 2 is positioned at the front end at B angle, and
Described A angle is 45 °, and described B angle is 30 °, improves its steering capability, makes male and female screw thread when tightening
Guide more smooth and easy.The thread pitch of described thread segment is 7.257mm, improves the stubborn button speed of drilling rod.
The tapering of the screw thread of described thread segment 2 is 1:16, in the case of identical Major Diam D, by screw thread
Taper design be 1:16, screw thread bear moment of torsion ability strengthen.
The drilling rod clamp external diameter of described drilling rod body 1 is D2, and the Major Diam of described thread segment is D, D2:
D=1.15, in the case of bearing equal moment of torsion, drilling rod clamp outer diameter D 2 diminishes, drilling rod body 1 and body
The transition conical surface 3 area reduce, soil resistance during construction also reduces.
The endoporus aperture of described drilling rod body 1 is d2, and the Major Diam of described thread segment 2 is D, d2:D=0.55,
On the premise of ensureing screw thread effective stress sectional area, the larger of endoporus aperture d2, mud is in drilling rod
The resistance of flowing diminishes, and flow increases, and is beneficial to construction, simultaneously because endoporus aperture d2 larger, produces
Thickening amount during drilling rod reduces accordingly, and body raw material length reduces, and saves production cost.
Above example simply elaborates ultimate principle and the characteristic of the present invention, and the present invention is not limited by above-mentioned example
System, without departing from the spirit and scope of the present invention, the present invention also has various change and change, these
Change and change both fall within scope of the claimed invention.Claimed scope is by appended power
Profit claim and equivalent thereof define.
Claims (5)
1. a high pulling torque threaded structure of drill rod, it includes drilling rod body and is opened in described drilling rod body end
Thread segment, it is characterised in that the tapering of the screw thread of described thread segment is 1:16, the screw thread of described thread segment
Pitch is 7.257mm.
High pulling torque threaded structure of drill rod the most according to claim 1, it is characterised in that described thread segment
Form of thread angle be made up of A angle and B angle, described A angle be more than B angle, along the side of being screwed into of described thread segment
The front end at B angle it is positioned to described A angle.
High pulling torque threaded structure of drill rod the most according to claim 2, it is characterised in that described A angle is
45 °, described B angle is 30 °.
High pulling torque threaded structure of drill rod the most according to claim 1, it is characterised in that described drilling rod is originally
The drilling rod clamp external diameter of body is D2, and the Major Diam of described thread segment is D, D2:D=1.15.
High pulling torque threaded structure of drill rod the most according to claim 1, it is characterised in that described drilling rod is originally
The endoporus aperture of body is d2, and the Major Diam of described thread segment is D, d2:D=0.55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480054.1A CN105952390A (en) | 2016-06-27 | 2016-06-27 | Large-torque drill stem thread structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480054.1A CN105952390A (en) | 2016-06-27 | 2016-06-27 | Large-torque drill stem thread structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105952390A true CN105952390A (en) | 2016-09-21 |
Family
ID=56905325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610480054.1A Pending CN105952390A (en) | 2016-06-27 | 2016-06-27 | Large-torque drill stem thread structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105952390A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030156918A1 (en) * | 2001-12-07 | 2003-08-21 | Baker Hughes Incorporated | Modular thread connection with high fatigue resistance |
| RU2297512C2 (en) * | 2005-04-01 | 2007-04-20 | ОАО "Таганрогский металлургический завод" | Air-tight threaded oil-field pipe connection |
| CN101571035A (en) * | 2009-06-17 | 2009-11-04 | 北京中煤矿山工程有限公司 | Sawtooth thread of drill pipe joint |
| CN201778667U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Double-shouldered drill pipe with improved fatigue strength |
| CN201972619U (en) * | 2011-02-28 | 2011-09-14 | 上海海隆石油管材研究所 | Digital non-standard drill tool connecting mechanism |
| CN201972629U (en) * | 2011-03-14 | 2011-09-14 | 唐山市金石超硬材料有限公司 | Threaded structure of drill rod |
| CN202039785U (en) * | 2011-03-14 | 2011-11-16 | 上海海隆石油管材研究所 | Durable drill pipe joint with ultrahigh torsional strength |
| CN102678068A (en) * | 2012-06-06 | 2012-09-19 | 中国石油集团渤海石油装备制造有限公司 | Toothed thread drill stem joint |
| CN202706935U (en) * | 2012-07-12 | 2013-01-30 | 唐山市金石超硬材料有限公司 | Drill rod structure with reinforced end part |
| CN103015913A (en) * | 2012-12-25 | 2013-04-03 | 江苏和信石油机械有限公司 | Exploration drill rod thread structure with 12-3/4-inch ultra-large caliber |
| CN103114816A (en) * | 2013-03-09 | 2013-05-22 | 长沙创远高新机械有限责任公司 | High load drill stem and raise boring machine with the same |
| CN103184836A (en) * | 2011-12-30 | 2013-07-03 | 江阴德玛斯特钻具有限公司 | Directly-connected drill rod |
| 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 |
| CN204040938U (en) * | 2014-07-31 | 2014-12-24 | 攀钢集团成都钢钒有限公司 | A kind of Oil/gas Well thimble assembly |
| CN204877303U (en) * | 2015-07-31 | 2015-12-16 | 江苏隆盛钻采机械制造有限公司 | High torsion resistant drill pipe sub |
| CN205858205U (en) * | 2016-06-27 | 2017-01-04 | 无锡双马钻探工具有限公司 | A kind of high pulling torque threaded structure of drill rod |
-
2016
- 2016-06-27 CN CN201610480054.1A patent/CN105952390A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030156918A1 (en) * | 2001-12-07 | 2003-08-21 | Baker Hughes Incorporated | Modular thread connection with high fatigue resistance |
| RU2297512C2 (en) * | 2005-04-01 | 2007-04-20 | ОАО "Таганрогский металлургический завод" | Air-tight threaded oil-field pipe connection |
| CN101571035A (en) * | 2009-06-17 | 2009-11-04 | 北京中煤矿山工程有限公司 | Sawtooth thread of drill pipe joint |
| CN201778667U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Double-shouldered drill pipe with improved fatigue strength |
| CN201972619U (en) * | 2011-02-28 | 2011-09-14 | 上海海隆石油管材研究所 | Digital non-standard drill tool connecting mechanism |
| CN201972629U (en) * | 2011-03-14 | 2011-09-14 | 唐山市金石超硬材料有限公司 | Threaded structure of drill rod |
| CN202039785U (en) * | 2011-03-14 | 2011-11-16 | 上海海隆石油管材研究所 | Durable drill pipe joint with ultrahigh torsional strength |
| CN103184836A (en) * | 2011-12-30 | 2013-07-03 | 江阴德玛斯特钻具有限公司 | Directly-connected drill rod |
| CN102678068A (en) * | 2012-06-06 | 2012-09-19 | 中国石油集团渤海石油装备制造有限公司 | Toothed thread drill stem joint |
| CN202706935U (en) * | 2012-07-12 | 2013-01-30 | 唐山市金石超硬材料有限公司 | Drill rod structure with reinforced end part |
| CN103015913A (en) * | 2012-12-25 | 2013-04-03 | 江苏和信石油机械有限公司 | Exploration drill rod thread structure with 12-3/4-inch ultra-large caliber |
| CN103114816A (en) * | 2013-03-09 | 2013-05-22 | 长沙创远高新机械有限责任公司 | High load drill stem and raise boring machine with the same |
| 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 |
| CN204040938U (en) * | 2014-07-31 | 2014-12-24 | 攀钢集团成都钢钒有限公司 | A kind of Oil/gas Well thimble assembly |
| CN204877303U (en) * | 2015-07-31 | 2015-12-16 | 江苏隆盛钻采机械制造有限公司 | High torsion resistant drill pipe sub |
| CN205858205U (en) * | 2016-06-27 | 2017-01-04 | 无锡双马钻探工具有限公司 | A kind of high pulling torque threaded structure of drill rod |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |