ATE258645T1 - DRILL ROD WITH INNER TUBE - Google Patents

DRILL ROD WITH INNER TUBE

Info

Publication number
ATE258645T1
ATE258645T1 AT99305930T AT99305930T ATE258645T1 AT E258645 T1 ATE258645 T1 AT E258645T1 AT 99305930 T AT99305930 T AT 99305930T AT 99305930 T AT99305930 T AT 99305930T AT E258645 T1 ATE258645 T1 AT E258645T1
Authority
AT
Austria
Prior art keywords
threaded end
inner tube
drill rod
flank
rod
Prior art date
Application number
AT99305930T
Other languages
German (de)
Inventor
Nigel Roberts
James Yao
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
Application granted granted Critical
Publication of ATE258645T1 publication Critical patent/ATE258645T1/en

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. <IMAGE>
AT99305930T 1998-07-30 1999-07-26 DRILL ROD WITH INNER TUBE ATE258645T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE258645T1 true ATE258645T1 (en) 2004-02-15

Family

ID=10836359

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99305930T ATE258645T1 (en) 1998-07-30 1999-07-26 DRILL ROD WITH INNER TUBE

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
RU2286444C2 (en) 2001-10-22 2006-10-27 Йон ПЕЛЯНУ Well fluid conditioning method and sucker rod
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067593A (en) * 1960-08-29 1962-12-11 American Iron & Machine Works Integral tool joint drill pipe
US4601491A (en) * 1983-10-19 1986-07-22 Vetco Offshore, Inc. Pipe connector
SE8504842L (en) * 1985-10-17 1987-04-18 Santrade Ltd DRILLING ROCK FOR BACKGROUND MOUNTING
US5358285A (en) * 1992-12-03 1994-10-25 Prideco, Inc. Stress relief groove for drill pipe
US5355968A (en) * 1993-05-20 1994-10-18 Grant Tfw, Inc. Tool joint stress relief groove
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
GB2340148A (en) 2000-02-16
EP0979922B1 (en) 2004-01-28
EP0979922A2 (en) 2000-02-16
GB9816494D0 (en) 1998-09-23
GB2340148B (en) 2002-12-31
EP0979922A3 (en) 2001-01-17
CA2278987A1 (en) 2000-01-30

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties