EP0220147A3 - Thread coupling for percussion drilling - Google Patents

Thread coupling for percussion drilling Download PDF

Info

Publication number
EP0220147A3
EP0220147A3 EP86850341A EP86850341A EP0220147A3 EP 0220147 A3 EP0220147 A3 EP 0220147A3 EP 86850341 A EP86850341 A EP 86850341A EP 86850341 A EP86850341 A EP 86850341A EP 0220147 A3 EP0220147 A3 EP 0220147A3
Authority
EP
European Patent Office
Prior art keywords
thread
thread coupling
percussion drilling
threads
coupling
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.)
Withdrawn
Application number
EP86850341A
Other languages
German (de)
French (fr)
Other versions
EP0220147A2 (en
Inventor
Sören Liljekvist
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.)
Santrade Ltd
Original Assignee
Santrade 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 Santrade Ltd filed Critical Santrade Ltd
Publication of EP0220147A2 publication Critical patent/EP0220147A2/en
Publication of EP0220147A3 publication Critical patent/EP0220147A3/en
Withdrawn legal-status Critical Current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)

Abstract

A thread coupling for drill rods for percussion rock drilling comprising a male thread (15) and a co-operating female thread (12). The threads (12, 15) are designed internally in such a way that an essentially unchanged contact surface is maintained between the contact shoulders (16) of the threads adjacent to the thread clearance of the female thread (12) or the thread outlet of the male thread (15).
EP86850341A 1985-10-17 1986-10-08 Thread coupling for percussion drilling Withdrawn EP0220147A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8504842A SE8504842L (en) 1985-10-17 1985-10-17 DRILLING ROCK FOR BACKGROUND MOUNTING
SE8504842 1985-10-17

Publications (2)

Publication Number Publication Date
EP0220147A2 EP0220147A2 (en) 1987-04-29
EP0220147A3 true EP0220147A3 (en) 1988-11-17

Family

ID=20361778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86850341A Withdrawn EP0220147A3 (en) 1985-10-17 1986-10-08 Thread coupling for percussion drilling

Country Status (8)

Country Link
EP (1) EP0220147A3 (en)
JP (1) JPS62125192A (en)
CN (1) CN86107149A (en)
AU (1) AU6367286A (en)
BR (1) BR8605070A (en)
FI (1) FI864185A (en)
SE (1) SE8504842L (en)
ZA (1) ZA867682B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514137C2 (en) * 1998-03-24 2001-01-08 Sandvik Ab Threaded joints for striking drilling, male and female part to be included in a threaded joint for striking drilling as well as method for manufacturing a product with a thread to be included in a threaded joint for striking drilling
GB2340148B (en) * 1998-07-30 2002-12-31 Boart Longyear Ltd Tube rod
EP2845992B1 (en) * 2013-09-09 2016-01-13 Sandvik Intellectual Property AB Drill string with bend resistant coupling
EP3095955A1 (en) * 2015-05-22 2016-11-23 Sandvik Intellectual Property AB Threaded coupling end for drill string component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645802A (en) * 1925-06-09 1927-10-18 Lewis F Davis Deep-well pump-plunger attachment
US2005498A (en) * 1933-04-28 1935-06-18 Raymond S Hart Detachable bit for rock drills
US2979993A (en) * 1956-04-17 1961-04-18 Sandvikens Jernverks Ab Rock drill bit and method of manufacturing same
US3542406A (en) * 1969-03-26 1970-11-24 Ideal Ind Connector and method
US4397484A (en) * 1982-04-16 1983-08-09 Mobil Oil Corporation Locking coupling system
DE3610880A1 (en) * 1985-04-04 1986-10-16 Santrade Ltd., Luzern THREAD STRUCTURE FOR STONE DRILLING

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645802A (en) * 1925-06-09 1927-10-18 Lewis F Davis Deep-well pump-plunger attachment
US2005498A (en) * 1933-04-28 1935-06-18 Raymond S Hart Detachable bit for rock drills
US2979993A (en) * 1956-04-17 1961-04-18 Sandvikens Jernverks Ab Rock drill bit and method of manufacturing same
US3542406A (en) * 1969-03-26 1970-11-24 Ideal Ind Connector and method
US4397484A (en) * 1982-04-16 1983-08-09 Mobil Oil Corporation Locking coupling system
DE3610880A1 (en) * 1985-04-04 1986-10-16 Santrade Ltd., Luzern THREAD STRUCTURE FOR STONE DRILLING

Also Published As

Publication number Publication date
BR8605070A (en) 1987-07-21
SE8504842L (en) 1987-04-18
EP0220147A2 (en) 1987-04-29
FI864185A0 (en) 1986-10-16
CN86107149A (en) 1987-05-20
SE8504842D0 (en) 1985-10-17
FI864185A (en) 1987-04-18
ZA867682B (en) 1987-05-27
JPS62125192A (en) 1987-06-06
AU6367286A (en) 1987-04-30

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Inventor name: LILJEKVIST, SOEREN