CN106437551A - High-torsion-resistance drill pipe connector with good sealing - Google Patents
High-torsion-resistance drill pipe connector with good sealing Download PDFInfo
- Publication number
- CN106437551A CN106437551A CN201611001473.9A CN201611001473A CN106437551A CN 106437551 A CN106437551 A CN 106437551A CN 201611001473 A CN201611001473 A CN 201611001473A CN 106437551 A CN106437551 A CN 106437551A
- Authority
- CN
- China
- Prior art keywords
- conical section
- sealing
- drill pipe
- male connection
- section
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 210000002445 nipple Anatomy 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 2
- 210000001215 vagina Anatomy 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002002 slurry 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
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 a high-torsion-resistance drill pipe connector with good sealing, wherein an external-thread connector base cylindrical segment is in clearance fit with an internal-thread connector borehole segment; an external-thread connector seal conical segment is in interference fit with an internal-thread connector seal conical segment and are identical in taper, with a taper range of 1:12 to 1:36; the external-thread connector seal conical segment is provided with 1 to 6 circular lubricating grooves; the length of the external-thread connector seal conical segment ranges from 8 mm to 25 mm; the length of the internal-thread connector seal conical segment is 8-22 mm; the outer diameter of the tail end of the external-thread connector seal conical segment is 0.04-0.16 mm greater than the inner diameter of the tail end of the internal-thread connector seal conical segment. The high-torsion-resistance drill pipe connector with good sealing has the advantages that the drill pipe connector has good sealing and high torsion strength after being connected, is suitable for drilling operations under conventional conditions, and is also suitable for complex condition wells of high-pressure oil-gas reservoirs requiring high torsion.
Description
Technical field
The present invention relates to drilling tool field, and in particular to a kind of excellent high anti-twisting drill pipe joint of sealing property.
Background technology
Drilling rod be oil and gas exploration with exploitation in important tool, be the important component part of DRILL-STRING SYSTEM, drilling rod
Single whole drill string is formed by the connection of tool joint.Drill string is not only the circulation canal of drilling fluid, and passes in drilling well
Torque delivery, bears tension and compression, bending, the compound action of multiple load such as reverses and vibrate, impacts.Contact pressure when torque shoulder
During power deficiency, high-pressure slurry will be pierced through from sealing shoulder face, so as to cause the failure of tool joint.
Content of the invention
It is an object of the invention to for solving the deficiencies in the prior art, and provide a kind of excellent height of sealing property antitorque brill
Knock-off joint.
The new technical scheme of the present invention is：A kind of excellent high anti-twisting drill pipe joint of sealing property, including female adapter
And male connection, described female adapter includes main torque shoulder face, bore hole section, and internal thread segment seals conical section, secondary turns round
Square circular bead surface；Male connection includes main torque shoulder face, base cylinder section, external thread section, sealing conical section, accessory torque shoulder
Face.Male connection base cylinder section is intersegmental with female adapter bore hole for gap cooperation；Male connection sealing conical section with
Female adapter sealing circular cone is intersegmental for interference fit；Male connection sealing conical section and female adapter sealing conical section tool
There is identical taper, range of taper is 1：12-1：36；1-6 bar annular lubricant groove is machined with male connection sealing conical section；
The length range of male connection sealing conical section is 8-25mm；Female adapter sealing circular cone segment length is 8-22mm；Outer spiral shell
The external diameter of stricture of vagina joint sealing conical section end 0.04-0.16mm big with the internal diameter of female adapter sealing conical section end.
Described sealing conical section is 1 with the taper of sealing conical section：20.
The length of described male connection sealing conical section is 16mm.
Described female adapter sealing circular cone segment length is 14mm.
3 width are evenly equipped with for 3mm in described male connection sealing conical section, depth is the annular lubricant of 0.35mm
Groove.
The external diameter of described male connection sealing conical section end seals the internal diameter of conical section end with female adapter
Big 0.07mm.
Described male connection sealing conical section and female adapter sealing conical section formed upon connection multiple mutually
The independent metal-metal conical seal (contact) face for being sealed by contact pressure.
The invention has the beneficial effects as follows：Described internal and external screw thread joint upper button after, externally threaded sealing conical section appearance
Be interference fit between the contact surface of face and the sealing conical section inner surface of female thread, the contact stress of radial direction is produced in contact surface,
So as to form sealing surface.Described internal and external screw thread joint is during upper button, and male connection seals the annular lubricant of taper seat
Thread compound in groove will be lubricated to sealing conical surface, it is to avoid contact surface causes to connect because of the frictional heat that interference fit is produced
The risk of contacting surface bonding.Described internal and external screw thread joint is after upper button, and main torque shoulder face and accessory torque circular bead surface effectively connect
Touch, make nipple have high torsional property；Described internal and external screw thread joint is after upper button, and through test, torsional strength ratio is with rule
The API nipple of lattice improves more than 50%, and joint sealing pressure reaches 160MPa.The nipple is applicable not only to conventional work
The drillng operation of condition, is also applied for needing the complex working condition well of the hydraulic oil gas reservoir of high pulling torque.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of the male connection sealing conical section of the present invention.
Wherein：1 be male connection, torque shoulder face based on 11,12 be base cylinder section, 13 be external thread section, 14 be
Sealing conical section, 15 be accessory torque circular bead surface, 16 be annular lubricant groove；2 be female adapter, torque shoulder face based on 21,22
For bore hole section, 23 be internal thread segment, 24 for sealing conical section, 25 be accessory torque circular bead surface.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
A kind of excellent high anti-twisting drill pipe joint of sealing property, including female adapter 2 and male connection 1, described
Female adapter 2 includes main torque shoulder face 21, bore hole section 22, internal thread segment 23, sealing conical section 24, accessory torque circular bead surface
25；Male connection 1 includes main torque shoulder face 11, base cylinder section 12, external thread section 13, sealing conical section 14, accessory torque
Circular bead surface 15；Coordinate for gap between 1 base cylinder section 12 of male connection and 2 bore hole section 22 of female adapter；Male connection 1
It is interference fit that sealing conical section 14 and female adapter 2 are sealed between conical section 24；Male connection 1 seal conical section 14 with interior
Nipple 2 seals conical section 24 with identical taper, and range of taper is 1：12-1：36；Male connection 1 seals conical section
1-6 bar annular lubricant groove is machined with 14；It is 8-25mm that male connection 1 seals the length range of conical section 14；Female thread connects
2 24 length of sealing conical section be；The external diameter that male connection 1 seals 14 end of conical section is close with female adapter 2
The big 0.04-0.16mm of internal diameter of envelope 24 end of conical section.
Described sealing conical section 14 is 1 with the taper of sealing conical section 24：20.
It is 16mm that described male connection 1 seals the length of conical section 14.
It is 14mm that described female adapter 2 seals 24 length of conical section.
Described male connection 1 is sealed and is evenly equipped with 3 width in conical section 14 for 3mm, and depth is the annular of 0.35mm
Lubrication groove 16.
Described male connection 1 seals the external diameter of 14 end of conical section and female adapter 2 seals 24 end of conical section
The big 0.07mm of internal diameter.
Described male connection sealing conical section 14 and female adapter sealing conical section 24 form multiple upon connection
The separate metal-metal conical seal (contact) face for being sealed by contact pressure.
Implement parameter using above, internal and external screw thread joint in upper button, externally threaded 14 outer surface of sealing conical section with interior
24 inner surface of the sealing conical section contact of screw thread, produces interference fit, produces the contact stress of radial direction in contact surface, formed multiple
Separate metal to metal seal face.Thread compound in the annular lubricant groove of male connection sealing taper seat will be to sealing
Conical surface is lubricated, it is to avoid contact surface causes the risk that contact surface bonds because of frictional heat that interference fit is produced.Inside and outside
The accessory torque circular bead surface of nipple and main torque shoulder face successively contact, and torque value reaches preset value, completes button.
Implement parameter using above, internal and external screw thread joint is after upper button, and the externally threaded conical section 14 that seals is with female thread
24 inner surface of sealing conical section will form multiple separate metal to metal seal faces for being sealed by contact pressure,
Sealing intensity and the sealing reliability of tool joint is greatly improved, seal pressure is up to 160MPa.
Implement parameter using above, internal and external screw thread joint is after upper button, and main torque shoulder face and accessory torque circular bead surface are effective
Contact, makes nipple have high torsional property, improves 60% than the API nipple of same specification.
Claims (7)
1. the excellent high anti-twisting drill pipe joint of a kind of sealing property, including female adapter（2）And male connection（1）, which is special
Levy and be：Described female adapter（2）Including main torque shoulder face（21）, bore hole section（22）, internal thread segment（23）, sealing circle
The conical surface（24）, accessory torque circular bead surface（25)；Male connection (1) includes main torque shoulder face (11), base cylinder section (12), outward
Thread segment (13), sealing conical section (14), accessory torque circular bead surface (15)；Male connection (1) base cylinder section (12) and interior spiral shell
Coordinate for gap between stricture of vagina joint (2) bore hole section (22)；Male connection (1) sealing conical section (14) is close with female adapter (2)
It is interference fit between envelope conical section (24)；Male connection (1) sealing conical section (14) seals conical section with female adapter (2)
(24) with identical taper, range of taper is 1：12-1：36；1-6 is machined with male connection (1) sealing conical section (14)
Bar annular lubricant groove；The length range of male connection (1) sealing conical section (14) is 8-25mm；Female adapter (2) is sealed
Conical section (24) length is 8-22mm；The external diameter of male connection (1) sealing conical section (14) end is close with female adapter (2)
The big 0.04-0.16mm of internal diameter of envelope conical section (24) end.
2. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is close
Envelope conical section (14) is 1 with the taper of sealing conical section (24)：20.
3. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is outer
The length of nipple (1) sealing conical section (14) is 16mm.
4. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is interior
Nipple (2) sealing conical section (24) length is 14mm.
5. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is outer
3 width are evenly equipped with nipple (1) sealing conical section (14) for 3mm, depth is the annular lubricant groove of 0.35mm（16）.
6. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is outer
The external diameter of nipple (1) sealing conical section (14) end is big with the internal diameter of female adapter (2) sealing conical section (24) end
0.07mm.
7. the excellent high anti-twisting drill pipe joint of a kind of sealing property according to claim 1, it is characterised in that：Described is outer
Nipple seals conical section（14）Conical section is sealed with female adapter（24）Multiple separate lead to is formed upon connection
Cross the metal-metal conical seal (contact) face sealed by contact pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001473.9A CN106437551A (en) | 2016-11-15 | 2016-11-15 | High-torsion-resistance drill pipe connector with good sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001473.9A CN106437551A (en) | 2016-11-15 | 2016-11-15 | High-torsion-resistance drill pipe connector with good sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437551A true CN106437551A (en) | 2017-02-22 |
Family
ID=58207752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611001473.9A Pending CN106437551A (en) | 2016-11-15 | 2016-11-15 | High-torsion-resistance drill pipe connector with good sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437551A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720006A (en) * | 2017-05-12 | 2020-01-21 | 超优质服务有限责任公司 | Curve sealing system |
| CN116537710A (en) * | 2023-06-07 | 2023-08-04 | 上海海隆石油管材研究所 | A limit torque oil drill pipe joint and its preparation method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2764922Y (en) * | 2005-01-31 | 2006-03-15 | 宝山钢铁股份有限公司 | Double shoulder metal hermetic sealing drill pipe joint |
| CN201013259Y (en) * | 2007-02-15 | 2008-01-30 | 宝山钢铁股份有限公司 | Highly anti-torsion oil pipe |
| CN201013257Y (en) * | 2007-02-16 | 2008-01-30 | 陆金福 | Oil pipe coupling |
| CN201826771U (en) * | 2010-06-25 | 2011-05-11 | 上海海隆石油钻具有限公司 | Air-tight anti-gluing drill pipe connector |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN203729903U (en) * | 2013-12-20 | 2014-07-23 | 东营威玛石油钻具有限公司 | Extremely-high anti-torsional thread connection device |
| CN203925326U (en) * | 2014-06-19 | 2014-11-05 | 上海海隆石油钻具有限公司 | The antitorque high pressure sealing drilling rod joint of height for oil gas drilling |
| CN204186304U (en) * | 2014-09-26 | 2015-03-04 | 宝山钢铁股份有限公司 | The tool joint of a kind of antifatigue ultrahigh anti-torsion |
| CN105422019A (en) * | 2015-12-09 | 2016-03-23 | 中国石油集团石油管工程技术研究院 | Rapid buckling threaded structure for expansion pipe in large expansion rate and machining and preparing method |
| CN206346712U (en) * | 2016-11-15 | 2017-07-21 | 东营威玛石油钻具有限公司 | A kind of excellent high anti-twisting drill pipe joint of sealing property |
-
2016
- 2016-11-15 CN CN201611001473.9A patent/CN106437551A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2764922Y (en) * | 2005-01-31 | 2006-03-15 | 宝山钢铁股份有限公司 | Double shoulder metal hermetic sealing drill pipe joint |
| CN201013259Y (en) * | 2007-02-15 | 2008-01-30 | 宝山钢铁股份有限公司 | Highly anti-torsion oil pipe |
| CN201013257Y (en) * | 2007-02-16 | 2008-01-30 | 陆金福 | Oil pipe coupling |
| CN201826771U (en) * | 2010-06-25 | 2011-05-11 | 上海海隆石油钻具有限公司 | Air-tight anti-gluing drill pipe connector |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN203729903U (en) * | 2013-12-20 | 2014-07-23 | 东营威玛石油钻具有限公司 | Extremely-high anti-torsional thread connection device |
| CN203925326U (en) * | 2014-06-19 | 2014-11-05 | 上海海隆石油钻具有限公司 | The antitorque high pressure sealing drilling rod joint of height for oil gas drilling |
| CN204186304U (en) * | 2014-09-26 | 2015-03-04 | 宝山钢铁股份有限公司 | The tool joint of a kind of antifatigue ultrahigh anti-torsion |
| CN105422019A (en) * | 2015-12-09 | 2016-03-23 | 中国石油集团石油管工程技术研究院 | Rapid buckling threaded structure for expansion pipe in large expansion rate and machining and preparing method |
| CN206346712U (en) * | 2016-11-15 | 2017-07-21 | 东营威玛石油钻具有限公司 | A kind of excellent high anti-twisting drill pipe joint of sealing property |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720006A (en) * | 2017-05-12 | 2020-01-21 | 超优质服务有限责任公司 | Curve sealing system |
| CN110720006B (en) * | 2017-05-12 | 2021-12-03 | 超优质服务有限责任公司 | Curve sealing system |
| CN116537710A (en) * | 2023-06-07 | 2023-08-04 | 上海海隆石油管材研究所 | A limit torque oil drill pipe joint and its preparation method |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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| WD01 | Invention patent application deemed withdrawn after publication |