CN105909184A - Anti-galling drilling-tool thread joint - Google Patents

Anti-galling drilling-tool thread joint Download PDF

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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
Application number
CN201610421317.1A
Other languages
Chinese (zh)
Inventor
刘永刚
张传芳
杨莹莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongying Weil-Mclain Oil Drilling Tools Co Ltd
Original Assignee
Dongying Weil-Mclain Oil Drilling Tools Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongying Weil-Mclain Oil Drilling Tools Co Ltd filed Critical Dongying Weil-Mclain Oil Drilling Tools Co Ltd
Priority to CN201610421317.1A priority Critical patent/CN105909184A/en
Publication of CN105909184A publication Critical patent/CN105909184A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/04Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042Threaded
    • E21B17/0426Threaded with a threaded cylindrical portion, e.g. for percussion rods

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

A kind of anti-galling drilling tool thread joint
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.
CN201610421317.1A 2016-06-15 2016-06-15 Anti-galling drilling-tool thread joint Pending CN105909184A (en)

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

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CN201610421317.1A Pending CN105909184A (en) 2016-06-15 2016-06-15 Anti-galling drilling-tool thread joint

Country Status (1)

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CN (1) CN105909184A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

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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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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

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Cited By (1)

* Cited by examiner, † Cited by third party
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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Application publication date: 20160831