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)

Also Published As

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

Similar Documents

Publication Publication Date Title
CA1027416A (en) Wingfold configuration
AU497203B2 (en) Neohelometer
CA1028819A (en) Homohedral construction
AU467292B2 (en) Eye-bush
AU496973B2 (en) 5-nitro-imidazoles
AU488255B2 (en) Underreamer
AU492578B2 (en) New thiadiazolymidazolidinones
AU493001B2 (en) new PYRIDYLYANOGUANIDINES
AU490416B2 (en) NEW lbt-HYDROXY-STEROIDS
AU489057B2 (en) New thiadiazolylimidazolines
CA1010926A (en) Timelock construction
AU480112B2 (en) Wingfold configuration
AU485075B2 (en) 2-nitroimidazoles
AU488720B2 (en) 2-deutero-3-fluoro-alanine
AU496205B2 (en) Pyridylthioureas
AU468625B2 (en) Wire-connector
AU475114B2 (en) Arylalkylsulphoxides
AU482293B2 (en) 7-methoxycephalosporins
AU482405B2 (en) Seco-prostaglandins
AU482524B2 (en) Pyridoindoles
AU483104B2 (en) Dipenylpropylamines
AU484632B2 (en) Aryloxyphenylpropylamines
AU484806B2 (en) Benzopyran-3-carbonitriles
AU493659B2 (en) 1-thiadiazolyl-6-acyloxyetrahydro-pyrimidinones
AU485931B2 (en) Triazine-diones