EP0979922A3 - Tube rod - Google Patents

Tube rod Download PDF

Info

Publication number
EP0979922A3
EP0979922A3 EP99305930A EP99305930A EP0979922A3 EP 0979922 A3 EP0979922 A3 EP 0979922A3 EP 99305930 A EP99305930 A EP 99305930A EP 99305930 A EP99305930 A EP 99305930A EP 0979922 A3 EP0979922 A3 EP 0979922A3
Authority
EP
European Patent Office
Prior art keywords
tube rod
threaded end
rod
flank
female threaded
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.)
Granted
Application number
EP99305930A
Other languages
German (de)
French (fr)
Other versions
EP0979922A2 (en
EP0979922B1 (en
Inventor
Nigel Roberts
James Yao
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.)
Boart Longyear Ltd
Original Assignee
Boart Longyear 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 Boart Longyear Ltd filed Critical Boart Longyear Ltd
Publication of EP0979922A2 publication Critical patent/EP0979922A2/en
Publication of EP0979922A3 publication Critical patent/EP0979922A3/en
Application granted granted Critical
Publication of EP0979922B1 publication Critical patent/EP0979922B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

A tube rod for rock drilling has a female threaded end (12) into which a male thread (either on a male connector or on the end of another tube rod) can be screwed to form part of a drill string. The female threaded end (12) is (a) of larger external diameter than the central section (10) of the rod and (b) has an annular groove (42%) with an asymmetrical profile, the flank of this groove nearest to the threaded end being steeper than the other flank.
EP99305930A 1998-07-30 1999-07-26 Tube rod Expired - Lifetime EP0979922B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9816494A GB2340148B (en) 1998-07-30 1998-07-30 Tube rod
GB9816494 1998-07-30

Publications (3)

Publication Number Publication Date
EP0979922A2 EP0979922A2 (en) 2000-02-16
EP0979922A3 true EP0979922A3 (en) 2001-01-17
EP0979922B1 EP0979922B1 (en) 2004-01-28

Family

ID=10836359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99305930A Expired - Lifetime EP0979922B1 (en) 1998-07-30 1999-07-26 Tube rod

Country Status (4)

Country Link
EP (1) EP0979922B1 (en)
AT (1) ATE258645T1 (en)
CA (1) CA2278987A1 (en)
GB (1) GB2340148B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2465111C (en) 2001-10-22 2008-10-21 Ion Peleanu Method for conditioning wellbore fluids and sucker rod therefore
SE524155C2 (en) 2002-05-22 2004-07-06 Atlas Copco Secoroc Ab String drill string thread for striking rock drilling
CN102926673A (en) * 2012-12-02 2013-02-13 中国石油化工股份有限公司 Destabilization-prevention oil pipe joint
EP3095954A1 (en) * 2015-05-22 2016-11-23 Sandvik Intellectual Property AB Drill rod or adaptor with strengthened spigot coupling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912930A (en) * 1960-05-31 1962-12-12 American Iron & Machine Works Integral tool joint drill pipe
US4601491A (en) * 1983-10-19 1986-07-22 Vetco Offshore, Inc. Pipe connector
EP0220147A2 (en) * 1985-10-17 1987-04-29 Santrade Ltd. Thread coupling for percussion drilling
GB2285645A (en) * 1994-01-13 1995-07-19 Prideco Inc Stress relief groove for drill pipe
US5535837A (en) * 1994-07-05 1996-07-16 Grant Prideco, Inc. Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355968A (en) * 1993-05-20 1994-10-18 Grant Tfw, Inc. Tool joint stress relief groove

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912930A (en) * 1960-05-31 1962-12-12 American Iron & Machine Works Integral tool joint drill pipe
US4601491A (en) * 1983-10-19 1986-07-22 Vetco Offshore, Inc. Pipe connector
EP0220147A2 (en) * 1985-10-17 1987-04-29 Santrade Ltd. Thread coupling for percussion drilling
GB2285645A (en) * 1994-01-13 1995-07-19 Prideco Inc Stress relief groove for drill pipe
US5535837A (en) * 1994-07-05 1996-07-16 Grant Prideco, Inc. Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies

Also Published As

Publication number Publication date
CA2278987A1 (en) 2000-01-30
EP0979922A2 (en) 2000-02-16
ATE258645T1 (en) 2004-02-15
EP0979922B1 (en) 2004-01-28
GB2340148A (en) 2000-02-16
GB9816494D0 (en) 1998-09-23
GB2340148B (en) 2002-12-31

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