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DE3566564D1 - Hole opener - Google Patents

Hole opener

Info

Publication number
DE3566564D1
DE3566564D1 DE8585305111T DE3566564T DE3566564D1 DE 3566564 D1 DE3566564 D1 DE 3566564D1 DE 8585305111 T DE8585305111 T DE 8585305111T DE 3566564 T DE3566564 T DE 3566564T DE 3566564 D1 DE3566564 D1 DE 3566564D1
Authority
DE
Germany
Prior art keywords
hole opener
opener
hole
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
DE8585305111T
Other languages
German (de)
Inventor
Neil Andrew Abercrombi Simpson
Alan Martyn Eddison
Ian Alexander Millar
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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
Priority claimed from US06/634,956 external-priority patent/US4589504A/en
Priority claimed from GB858510911A external-priority patent/GB8510911D0/en
Application filed by Diamant Boart NV SA filed Critical Diamant Boart NV SA
Application granted granted Critical
Publication of DE3566564D1 publication Critical patent/DE3566564D1/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
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

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)
  • Walking Sticks, Umbrellas, And Fans (AREA)
DE8585305111T 1984-07-27 1985-07-18 Hole opener Expired DE3566564D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/634,956 US4589504A (en) 1984-07-27 1984-07-27 Well bore enlarger
GB858510911A GB8510911D0 (en) 1985-04-30 1985-04-30 Hole opener

Publications (1)

Publication Number Publication Date
DE3566564D1 true DE3566564D1 (en) 1989-01-05

Family

ID=26289185

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585305111T Expired DE3566564D1 (en) 1984-07-27 1985-07-18 Hole opener

Country Status (3)

Country Link
EP (1) EP0176180B1 (en)
DE (1) DE3566564D1 (en)
NO (1) NO169609C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8620362D0 (en) * 1986-08-21 1986-10-01 Smith Int North Sea Milling tool
DE4012222A1 (en) * 1990-04-14 1991-10-17 Gerhard Bihler Deep boring drill assembly - has quick tool-changing mechanism to substitute roller chisels and fixed chisels
GB9211946D0 (en) * 1992-06-05 1992-07-15 Panther Oil Tools Uk Ltd Backreaming stabilizer
SE506342C2 (en) * 1996-04-09 1997-12-08 Sandvik Ab Clearing tools for rock drilling and ancillary part for this
US6742607B2 (en) 2002-05-28 2004-06-01 Smith International, Inc. Fixed blade fixed cutter hole opener

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028910A (en) * 1934-02-03 1936-01-28 John W Macclatchie Reamer
US2149798A (en) * 1936-06-27 1939-03-07 Arthur E Krick Well-drilling bit
US2140417A (en) * 1937-12-28 1938-12-13 Conklin Ancil Brooks Core taker for rotary drills
US2249732A (en) * 1939-09-22 1941-07-22 Paul F Green Off center reamer
US2607562A (en) * 1951-03-19 1952-08-19 Phipps Orville Self-piloted rotary drill bit
GB788104A (en) * 1954-10-01 1957-12-23 Modern Hardmetals Ltd Improvements in or relating to rock drilling bits
US3324957A (en) * 1963-09-24 1967-06-13 Gulf Research Development Co Hydraulic jet method of drilling a well through hard formations
US3237705A (en) * 1963-11-13 1966-03-01 Williams Joseph W Reamer for enlarging and straightening bore holes
US3908771A (en) * 1974-03-01 1975-09-30 Wylie P Garrett Drill collar incorporating device for jetting drilling fluid transversely into bore hole
JPS56500897A (en) * 1979-06-19 1981-07-02

Also Published As

Publication number Publication date
NO852975L (en) 1986-01-28
NO169609C (en) 1992-07-15
NO169609B (en) 1992-04-06
EP0176180A1 (en) 1986-04-02
EP0176180B1 (en) 1988-11-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee