SE9302280L - Threaded joint for drill string elements for striking drilling - Google Patents

Threaded joint for drill string elements for striking drilling

Info

Publication number
SE9302280L
SE9302280L SE9302280A SE9302280A SE9302280L SE 9302280 L SE9302280 L SE 9302280L SE 9302280 A SE9302280 A SE 9302280A SE 9302280 A SE9302280 A SE 9302280A SE 9302280 L SE9302280 L SE 9302280L
Authority
SE
Sweden
Prior art keywords
drill string
string elements
threaded joint
thread
spigot
Prior art date
Application number
SE9302280A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE501356C2 (en
SE9302280D0 (en
Inventor
Leif Nordfeldt
Karl Erik Kangas
Original Assignee
Uniroc Ab
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 Uniroc Ab filed Critical Uniroc Ab
Priority to SE9302280A priority Critical patent/SE501356C2/en
Publication of SE9302280D0 publication Critical patent/SE9302280D0/en
Priority to CA002126027A priority patent/CA2126027C/en
Priority to AU66092/94A priority patent/AU671024B2/en
Publication of SE9302280L publication Critical patent/SE9302280L/en
Publication of SE501356C2 publication Critical patent/SE501356C2/en

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)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Ropes Or Cables (AREA)
  • Earth Drilling (AREA)

Abstract

: Thread coupling for drill string elements for percussion drilling. The thread coupling comprises a first drill string element (1) provided with a sleeve formed part (2) having an internal thread (3) and a free end (4) for cooperation with a second drill string element (6) provided with a stop face (10) and a spigot (7) with an external thread (8). The free end (4) and the stop face (10) are hardened during manufacturing, preferably through case-hardening, to a depth of at least 2 mm. Furthermore, thesleeve formed part (2) and the spigot (7) are given such dimensions during manufacturing that a bottom play (A) of 1.1-2.0 mm, preferably 1.1-1.5 mm, is obtained when coupling newly made drill string elements.
SE9302280A 1993-07-02 1993-07-02 Threaded joint for drill string elements for striking drilling SE501356C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9302280A SE501356C2 (en) 1993-07-02 1993-07-02 Threaded joint for drill string elements for striking drilling
CA002126027A CA2126027C (en) 1993-07-02 1994-06-16 Thread coupling for drill string elements for percussion drilling
AU66092/94A AU671024B2 (en) 1993-07-02 1994-06-30 Thread coupling for drill string elements for percussion drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9302280A SE501356C2 (en) 1993-07-02 1993-07-02 Threaded joint for drill string elements for striking drilling

Publications (3)

Publication Number Publication Date
SE9302280D0 SE9302280D0 (en) 1993-07-02
SE9302280L true SE9302280L (en) 1995-01-03
SE501356C2 SE501356C2 (en) 1995-01-23

Family

ID=20390491

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9302280A SE501356C2 (en) 1993-07-02 1993-07-02 Threaded joint for drill string elements for striking drilling

Country Status (3)

Country Link
AU (1) AU671024B2 (en)
CA (1) CA2126027C (en)
SE (1) SE501356C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE506695C2 (en) * 1994-11-23 1998-02-02 Uniroc Ab Threaded joint for striking drilling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469603B (en) * 1988-07-08 1993-08-02 Sandvik Ab GAENGFOERBAND

Also Published As

Publication number Publication date
SE501356C2 (en) 1995-01-23
AU6609294A (en) 1995-01-12
SE9302280D0 (en) 1993-07-02
CA2126027C (en) 2005-11-08
AU671024B2 (en) 1996-08-08
CA2126027A1 (en) 1995-01-03

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Legal Events

Date Code Title Description
NUG Patent has lapsed