GB960482A - Drill collars - Google Patents

Drill collars

Info

Publication number
GB960482A
GB960482A GB5144363A GB5144363A GB960482A GB 960482 A GB960482 A GB 960482A GB 5144363 A GB5144363 A GB 5144363A GB 5144363 A GB5144363 A GB 5144363A GB 960482 A GB960482 A GB 960482A
Authority
GB
United Kingdom
Prior art keywords
drill collars
fox
heading
nov
convex
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
Application number
GB5144363A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB960482A publication Critical patent/GB960482A/en
Expired 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
    • E21B17/16—Drill collars
    • 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
    • E21B17/22—Rods or pipes with helical structure

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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

960,482. Boring earth &c. F. K. FOX. Nov. 13, 1961 [May 3, 1961], No. 51443/63. Addition to 889,078. Divided out of 960,481. Heading E1F. In a modification of a drill collar according to the parent Specification, this surface of the relieved area is concave instead of being flat or convex.
GB5144363A 1961-05-03 1961-11-13 Drill collars Expired GB960482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10737061A 1961-05-03 1961-05-03

Publications (1)

Publication Number Publication Date
GB960482A true GB960482A (en) 1964-06-10

Family

ID=22316289

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4059661A Expired GB960481A (en) 1961-05-03 1961-11-13 Drill pipes
GB5144363A Expired GB960482A (en) 1961-05-03 1961-11-13 Drill collars

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB4059661A Expired GB960481A (en) 1961-05-03 1961-11-13 Drill pipes

Country Status (1)

Country Link
GB (2) GB960481A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517357A1 (en) * 1981-11-27 1983-06-03 Smf Int Boring rod for ground working - is divided into three zones with centre having hard covering and shearing neck at top
NO850691L (en) * 1985-02-21 1986-08-22 Raufoss Ammunisjonsfabrikker BORE ROER.

Also Published As

Publication number Publication date
GB960481A (en) 1964-06-10

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