CN105909184A - Anti-galling drilling-tool thread joint - Google Patents
Anti-galling drilling-tool thread joint Download PDFInfo
- Publication number
- CN105909184A CN105909184A CN201610421317.1A CN201610421317A CN105909184A CN 105909184 A CN105909184 A CN 105909184A CN 201610421317 A CN201610421317 A CN 201610421317A CN 105909184 A CN105909184 A CN 105909184A
- Authority
- CN
- China
- Prior art keywords
- thread joint
- section
- conical section
- male connection
- galling
- 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 abstract description 28
- 238000005461 lubrication Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 210000002445 nipple Anatomy 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 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
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
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 relates to an anti-galling drilling-tool thread joint. The taper ratio of an inner thread section of an inner thread joint body to an outer thread section of an outer thread joint body is 1:4-1:8; a first cylindrical section of the outer thread joint body is in clearance fit with a first cylindrical section of the inner thread joint body; a second cylindrical section of the outer thread joint body is in clearance fit with a second cylindrical section of the inner thread joint body; a first conical section of the inner thread joint body is in interference fit with the surface of a conical section of the outer thread joint body, and the interference magnitude ranges from 0.05 mm to 0.20 mm; lubrication grooves are formed in the conical section of the outer thread joint body, and the value of the nose-end arc chamfering radius of the conical section of the outer thread joint body is R1.5. The anti-galling drilling-tool thread joint has the advantages that the thread joint is suitable for drilling operation of the normal working condition, and is also suitable for complex working condition wells such as ultra-deep wells with the large torque, ultra-long horizontal wells, large displacement wells and long-distance directional crossing wells.
Description
Technical field
The present invention relates to drilling tool field, be specifically related to a kind of anti-galling drilling tool thread joint。
Background technology
Drilling tool is oil and gas exploration and the important tool in exploitation, is the important component part of DRILL-STRING SYSTEM, and various drilling tools, such as drilling rod, heavy weight drill pipe, drill collar, crossover sub etc., the mode being threaded connection, form whole drill string.Drill string is not only the circulation canal of drilling fluid, and transmits moment of torsion in drilling well, bears tension and compression, bending, reverses and vibrates, the compound action of the multiple load such as impact.Drill string motion mode in drillng operation, in addition to around own axes rotation, the most usually revolves round the sun with borehole axis for axis, thus causes tool joint and the borehole wall or sleeve pipe generation fretting wear, produces return motion, makes drilling tool thread there is the risk released.Soft or hardStratumThe bit bouncing of the staggered drill bit caused can produce instantaneous reaction torque to drill string, makes drilling tool thread release.Additionally, because of the inhomogeneities of drill bit fractured rock cause drill string bear fromStratumLongitudinal jerk load of reaction force, also makes drill string thread joint there is the risk released.It is true that the phenomenon that releases that drill string is in drilling operation course happens occasionally, thus drilling tool thread joint generation thread gluing or swollen button is caused to lose efficacy.Owing to threaded is released, the contact in torque shoulder face reduces, thus causes the thorn leakage effect in drilling tool thread torque shoulder face.Additionally, due to threaded releases, intermeshing threaded stress changes, and the high stress areas of local occurs, makes threaded generation fatigue failure, causes thorn leakage or the fracture of male connection.These above-mentioned inefficacies have substantial amounts of record in the documents and materials of open report.The reason that drilling tool thread joint releases mainly has the factor of following several respects: ( 1 ) load working condition as above complicated that bears of drilling tool thread joint；( 2 ) in upper button operation, the torque value that torque wrench moment bears less than joint；( 3 ) self structure of current drilling tool thread joint.The most universal single torque shoulder drilling tool thread joint used, uses coarse thread.Torque shoulder contact before, torque wrench moment value is the least, when torque shoulder contact after, torque value rapidly rise violently to set torque wrench moment value.It is to say, when other factors such as vibrations or instantaneous reaction torque cause intermeshing joint circular bead surface that small reverse displacement occurs, the torque value of nipple can decline rapidly, the nipple after especially existing certain abrasion。
Summary of the invention
For solving the deficiencies in the prior art, the present invention provides a kind of anti-galling drilling tool thread joint.
The technical scheme is that a kind of anti-galling drilling tool thread joint, including female adapter and male connection, described female adapter includes torque shoulder face, the first cylindrical section, internal thread segment, the second cylindrical section, the first conical section, the second conical section, described male connection includes that torque shoulder face, the first cylindrical section, external thread section, the second cylindrical section, conical section, the internal thread segment of described female adapter with the taper ratio of the external thread section of male connection are
1:4-1:8
；Described male connection the first cylindrical section is intersegmental for matched in clearance with female adapter the first cylinder；Described male connection the second cylindrical section is intersegmental for matched in clearance with female adapter the second cylinder；Described female adapter the first conical section and male connection conical section surface are interference fit, and the magnitude of interference is
0.05-0.20mm
Between；Described male connection conical section has lubrication groove, and the value of the nose circular arc chamfering radius of the conical section of described male connection is
R1.5
。
Described for the conical section of male connection with the tapering of the first conical section of female adapter it is
1:16
。
The conical section of described male connection a length of
12mm
。
First conical section of female adapter is a length of
13mm
。
The tapering of the second conical section of described female adapter is
1:3
。
The width of described lubrication groove is
3-5mm
, the degree of depth is
0.3-0.5mm
。
The invention has the beneficial effects as follows: this nipple is applicable not only to the drillng operation of conventional operating mode, being also applied for needing the complex working condition wells such as the ultradeep well of high pulling torque, ultra-long horizontal well, extended reach well, distance directional traversing, on the internal and external screw thread joint of the present invention, the torsional strength after button is than same specification
API
Nipple improves
15%
Above, described internal and external screw thread joint is that single torque shoulder design, processing cost and precision take on drilling tool thread joint less than dual stage, easy to maintenance.
Accompanying drawing explanation
Figure
1
Structural representation for the present invention.
Figure
2
Male connection nose enlarged drawing for the present invention.
Wherein:
1
For male connection,
11
For torque shoulder face,
12
Be the first cylindrical section,
13
For external thread section,
14
Be the second cylindrical section,
15
For conical section,
16
For lubrication groove,
17
For nose circular arc chamfering radius,
2
For female adapter,
21
For torque shoulder face,
22
Be the first cylindrical section,
23
For internal thread segment,
24
Be the second cylindrical section,
25
Be the first conical section,
26
It it is the second conical section.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
A kind of anti-galling drilling tool thread joint, including female adapter
2
And male connection
1
, it is characterised in that: described female adapter
2
Including torque shoulder face
21
, the first cylindrical section
22
, internal thread segment
23
, the second cylindrical section
24
, the first conical section
25
, the second conical section
26
, described male connection
1
Including torque shoulder face
11
, the first cylindrical section
12
, external thread section
13
, the second cylindrical section
14
, conical section
15
, described female adapter
2
Internal thread segment
23
With male connection
1
External thread section
13
Taper ratio be
1:4-1:8
；Described male connection
1
First cylindrical section
12
With female adapter
2
First cylindrical section
22
Between be matched in clearance；Described male connection
1
Second cylindrical section
14
With female adapter
2
Second cylindrical section
24
Between be matched in clearance；Described female adapter
2
First conical section
25
And male connection
1
Conical section
15
Surface is interference fit, and the magnitude of interference is
0.05-0.20mm
Between；Described male connection
1
Conical section
15
There is lubrication groove
16
, described male connection
1
Conical section
15
Nose circular arc chamfering radius
17
Value be
R1.5
。
Described for male connection
1
Conical section
15
With female adapter
2
The first conical section
25
Tapering be
1:16
。
Described male connection
1
Conical section
15
A length of
12mm
。
Female adapter
2
The first conical section
2
A length of
13mm
。
Described female adapter
2
The second conical section
26
Tapering be
1:3
。
Described lubrication groove
16
Width be
3-5mm
, the degree of depth is
0.3-0.5mm
。
Implementing parameter more than using, internal and external screw thread joint is when upper button, and externally threaded conical section outer surface contacts with the conical section inner surface of internal thread, forms interference fit, increases torque wrench moment.Along with screwing of screw thread, externally threaded conical section outer surface increases with the contact surface of the conical section inner surface of internal thread, and torque wrench moment is gradually increased, subsequently, the torque shoulder face of internal and external threads joint with contact, when torque value reaches preset value, complete button.
Parameter is implemented more than using, internal and external screw thread joint is after upper button, interference fit between the contact surface of the conical section inner surface of externally threaded conical section outer surface and internal thread will produce radial load, produce elastic deformation energy, make break-out torque increase, effectively reduce tool joint in use produce " on secondary detain " risk.
With 5 〞 S135 NC50 As a example by tool joint, employing is above implements parameter, and through test, the internal and external screw thread joint of present invention torsional strength after upper button is than same specification NC50 API Nipple improves 20%。
Claims (6)
1. an anti-galling drilling tool thread joint, including female adapter (2) and male connection (1), it is characterized in that: described female adapter (2) includes torque shoulder face (21), first cylindrical section (22), internal thread segment (23), second cylindrical section (24), first conical section (25), second conical section (26), described male connection (1) includes torque shoulder face (11), first cylindrical section (12), external thread section (13), second cylindrical section (14), conical section (15), the internal thread segment (23) of described female adapter (2) is 1:4-1:8 with the taper ratio of the external thread section (13) of male connection (1)；It is matched in clearance between described male connection (1) first cylindrical section (12) and female adapter (2) first cylindrical section (22)；It is matched in clearance between described male connection (1) second cylindrical section (14) and female adapter (2) second cylindrical section (24)；Described female adapter (2) first conical section (25) and male connection (1) conical section (15) surface are interference fit, and the magnitude of interference is between 0.05-0.20mm；Described male connection (1) conical section (15) has lubrication groove (16), and the value of nose circular arc chamfering radius (17) of the conical section (15) of described male connection (1) is R1.5.
A kind of anti-galling drilling tool thread joint the most according to claim 1, it is characterised in that: the described conical section for male connection (1) (15) is 1:16 with the tapering of first conical section (25) of female adapter (2).
A kind of anti-galling drilling tool thread joint the most according to claim 1, it is characterised in that: a length of 12mm of the conical section (15) of described male connection (1).
A kind of anti-galling drilling tool thread joint the most according to claim 1, it is characterised in that: the first conical section (25) a length of 13mm of female adapter (2).
A kind of anti-galling drilling tool thread joint the most according to claim 1, it is characterised in that: the tapering of second conical section (26) of described female adapter (2) is 1:3.
A kind of anti-galling drilling tool thread joint the most according to claim 1, it is characterised in that: the width of described lubrication groove (16) is 3-5mm, and the degree of depth is 0.3-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421317.1A CN105909184A (en) | 2016-06-15 | 2016-06-15 | Anti-galling drilling-tool thread joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421317.1A CN105909184A (en) | 2016-06-15 | 2016-06-15 | Anti-galling drilling-tool thread joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909184A true CN105909184A (en) | 2016-08-31 |
Family
ID=56751147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421317.1A Pending CN105909184A (en) | 2016-06-15 | 2016-06-15 | Anti-galling drilling-tool thread joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215183A1 (en) * | 2016-06-15 | 2017-12-21 | 东营威玛石油钻具有限公司 | High torsion drill pipe joint |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220716A (en) * | 1997-03-27 | 1999-06-23 | 法国瓦罗里克·曼尼斯曼油汽公司 | Threaded joint for tubes |
| CN201103350Y (en) * | 2007-09-11 | 2008-08-20 | 山东墨龙石油机械股份有限公司 | Screwed tie-in of oil casing tube for deep mine |
| CN101307845A (en) * | 2008-07-11 | 2008-11-19 | 江苏常宝钢管股份有限公司 | Oil conduit screwed connection structure |
| CN102678065A (en) * | 2012-06-06 | 2012-09-19 | 无锡西姆莱斯石油专用管制造有限公司 | High-airtightness special buttress thread pipe joint |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN202900063U (en) * | 2012-10-23 | 2013-04-24 | 中国石油天然气股份有限公司 | Air-tight seal oil tube threaded connector |
| US20150167869A1 (en) * | 2013-12-16 | 2015-06-18 | Marubeni-Itochu Tubulars America Inc. | Threaded connection |
| CN205778593U (en) * | 2016-06-15 | 2016-12-07 | 东营威玛石油钻具有限公司 | A kind of anti-galling drilling tool thread joint |
-
2016
- 2016-06-15 CN CN201610421317.1A patent/CN105909184A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220716A (en) * | 1997-03-27 | 1999-06-23 | 法国瓦罗里克·曼尼斯曼油汽公司 | Threaded joint for tubes |
| CN201103350Y (en) * | 2007-09-11 | 2008-08-20 | 山东墨龙石油机械股份有限公司 | Screwed tie-in of oil casing tube for deep mine |
| CN101307845A (en) * | 2008-07-11 | 2008-11-19 | 江苏常宝钢管股份有限公司 | Oil conduit screwed connection structure |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN102678065A (en) * | 2012-06-06 | 2012-09-19 | 无锡西姆莱斯石油专用管制造有限公司 | High-airtightness special buttress thread pipe joint |
| CN202900063U (en) * | 2012-10-23 | 2013-04-24 | 中国石油天然气股份有限公司 | Air-tight seal oil tube threaded connector |
| US20150167869A1 (en) * | 2013-12-16 | 2015-06-18 | Marubeni-Itochu Tubulars America Inc. | Threaded connection |
| CN205778593U (en) * | 2016-06-15 | 2016-12-07 | 东营威玛石油钻具有限公司 | A kind of anti-galling drilling tool thread joint |
Non-Patent Citations (3)
| Title |
|---|
| 乔红斌等: "油管螺纹接头耐磨润滑处理技术简述", 《材料保护》 * |
| 洪宜斌: "油管螺纹接头耐磨润滑工艺分析", 《石油天然气学报（江汉石油学院学报）》 * |
| 田峰等: "新型绿色高效螺纹脂在油套管连接中的应用", 《润滑与密封》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215183A1 (en) * | 2016-06-15 | 2017-12-21 | 东营威玛石油钻具有限公司 | High torsion drill pipe joint |
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Legal Events
| 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: 20160831 |