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DE59811400D1 - DRILL RODS FOR IMPACT DRILLING, ESPECIALLY FOR OVERLAY DRILLING - Google Patents

DRILL RODS FOR IMPACT DRILLING, ESPECIALLY FOR OVERLAY DRILLING

Info

Publication number
DE59811400D1
DE59811400D1 DE59811400T DE59811400T DE59811400D1 DE 59811400 D1 DE59811400 D1 DE 59811400D1 DE 59811400 T DE59811400 T DE 59811400T DE 59811400 T DE59811400 T DE 59811400T DE 59811400 D1 DE59811400 D1 DE 59811400D1
Authority
DE
Germany
Prior art keywords
thread
drilling
male
string
drill pipes
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.)
Expired - Fee Related
Application number
DE59811400T
Other languages
German (de)
Inventor
Friedrich Flemming
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 GmbH and Co KG
Original Assignee
Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik
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 GmbH and Co KG Hartmetallwerkzeugfabrik, Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik filed Critical Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Application granted granted Critical
Publication of DE59811400D1 publication Critical patent/DE59811400D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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)
  • Drilling Tools (AREA)

Abstract

The invention relates to a string of drill pipes for rotary percussion drilling, especially for simultaneous drilling. One of the ends of the individual pipes of the string of drill pipes has a male thread (1) and the other end has a female thread (2). Both threads have a larger, load-bearing flank and a smaller, non-load bearing flank. The aim of the invention is to reduce thread wear to a minimum for a string of drill pipes, especially the wear that occurs when the drill pipes are assembled. To this end, the pipe ends are provided with an non-threaded insertion section (3) which is followed by the male or female thread. The profile of the male thread (1) has a flat thread crest and a thread root in the shape of a circular arc while the profile of the female thread (2) has a thread crest in the shape of a circular arc and a flat thread root. The pipe end which is provided with the male thread (1) has a circumferential shoulder (5) which serves to transmit the impact effect to a subsequent drill pipe.
DE59811400T 1998-10-01 1998-10-01 DRILL RODS FOR IMPACT DRILLING, ESPECIALLY FOR OVERLAY DRILLING Expired - Fee Related DE59811400D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/006264 WO2000020720A1 (en) 1998-10-01 1998-10-01 String of drill pipes for rotary percussion drilling, especially for simultaneous drilling

Publications (1)

Publication Number Publication Date
DE59811400D1 true DE59811400D1 (en) 2004-06-17

Family

ID=8167084

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59811400T Expired - Fee Related DE59811400D1 (en) 1998-10-01 1998-10-01 DRILL RODS FOR IMPACT DRILLING, ESPECIALLY FOR OVERLAY DRILLING

Country Status (6)

Country Link
EP (1) EP1117897B1 (en)
JP (1) JP3961769B2 (en)
KR (1) KR100556271B1 (en)
AT (1) ATE266796T1 (en)
DE (1) DE59811400D1 (en)
WO (1) WO2000020720A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006019396B4 (en) * 2006-04-24 2014-10-16 Tracto-Technik Gmbh drill pipe
DE102006062882B4 (en) * 2006-04-24 2013-03-28 Tracto-Technik Gmbh Drill rod for manufacturing earth drilling, comprises pipe sections connected with each other by plug in couplings, and housing that is closed along its longitudinal direction and interior couplings that can be actuated from inside
FR2969738B1 (en) * 2010-12-28 2016-03-25 Vallourec Mannesmann Oil & Gas THREADED JOINT FOR DRILLING AND OPERATING HYDROCARBON WELLS
US9810029B2 (en) 2011-01-26 2017-11-07 Bly Ip Inc. Drill string components resistant to jamming
US9850723B2 (en) 2011-01-26 2017-12-26 Bly Ip Inc. Drill string components having multiple-thread joints
US10557316B2 (en) 2011-01-26 2020-02-11 Bly Ip Inc. Drill string components having multiple-thread joints
EP2653706A1 (en) 2012-04-20 2013-10-23 Caterpillar Motoren GmbH & Co. KG Monitoring the fuel injection system of dual fuel engines
US9874058B2 (en) * 2014-07-31 2018-01-23 Baker Hughes, A Ge Company, Llc Fatigue resistant thread profile with combined curve rounding
JP6137115B2 (en) * 2014-10-27 2017-05-31 Ｊｆｅスチール株式会社 Steel pipe joints
US10041307B2 (en) 2015-01-22 2018-08-07 National Oilwell Varco, L.P. Balanced thread form, tubulars employing the same, and methods relating thereto
CA2940209C (en) 2015-08-27 2020-02-18 Diversity Technologies Corporation Threaded joint
DE202015104842U1 (en) 2015-09-11 2015-09-18 Sysbohr Gmbh - Bohrtechnik Für Den Spezialtiefbau Threaded connection and drill pipe with threaded connection
EP3712374B1 (en) * 2019-03-18 2022-09-28 Sandvik Mining and Construction Tools AB Drill string rod

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173046B (en) * 1958-12-30 1964-07-02 Boehler & Co Ag Geb Connection of the drill rods of percussion drills
US4799844A (en) * 1988-01-11 1989-01-24 Trw Inc Elliptical thread design
DE19803304C5 (en) * 1997-05-29 2010-09-30 Boart Longyear Gmbh & Co. Kg Hartmetallwerkzeugfabrik Drill pipe for rotary impact drilling, in particular for overlay drilling
DE29721748U1 (en) * 1997-12-09 1998-01-29 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Tillage tool

Also Published As

Publication number Publication date
WO2000020720A1 (en) 2000-04-13
JP3961769B2 (en) 2007-08-22
KR100556271B1 (en) 2006-03-03
KR20010106500A (en) 2001-11-29
ATE266796T1 (en) 2004-05-15
EP1117897A1 (en) 2001-07-25
EP1117897B1 (en) 2004-05-12
JP2002526701A (en) 2002-08-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee