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AU488255B2 - Underreamer - Google Patents

Underreamer

Info

Publication number
AU488255B2
AU488255B2 AU67912/74A AU6791274A AU488255B2 AU 488255 B2 AU488255 B2 AU 488255B2 AU 67912/74 A AU67912/74 A AU 67912/74A AU 6791274 A AU6791274 A AU 6791274A AU 488255 B2 AU488255 B2 AU 488255B2
Authority
AU
Australia
Prior art keywords
underreamer
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
AU67912/74A
Other versions
AU6791274A (en
Inventor
Howard Furse John
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.)
Smith International Inc
Original Assignee
Smith International Inc
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 Smith International Inc filed Critical Smith International Inc
Priority to AU67912/74A priority Critical patent/AU488255B2/en
Application granted granted Critical
Publication of AU488255B2 publication Critical patent/AU488255B2/en
Publication of AU6791274A publication Critical patent/AU6791274A/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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/34—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type

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)
AU67912/74A 1974-04-16 1974-04-16 Underreamer Expired AU488255B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67912/74A AU488255B2 (en) 1974-04-16 1974-04-16 Underreamer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU67912/74A AU488255B2 (en) 1974-04-16 1974-04-16 Underreamer

Publications (2)

Publication Number Publication Date
AU488255B2 true AU488255B2 (en) 1975-10-16
AU6791274A AU6791274A (en) 1975-10-16

Family

ID=3752006

Family Applications (1)

Application Number Title Priority Date Filing Date
AU67912/74A Expired AU488255B2 (en) 1974-04-16 1974-04-16 Underreamer

Country Status (1)

Country Link
AU (1) AU488255B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118548059B (en) * 2024-07-29 2024-09-27 贵州息烽磷矿有限责任公司 Mining method for protecting surrounding rock of steep-dip thick ore body

Also Published As

Publication number Publication date
AU6791274A (en) 1975-10-16

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