GB1133803A - Method and drill bit for widening the lower end of a drill hole drilled in the earth - Google Patents

Method and drill bit for widening the lower end of a drill hole drilled in the earth

Info

Publication number
GB1133803A
GB1133803A GB56923/66A GB5692366A GB1133803A GB 1133803 A GB1133803 A GB 1133803A GB 56923/66 A GB56923/66 A GB 56923/66A GB 5692366 A GB5692366 A GB 5692366A GB 1133803 A GB1133803 A GB 1133803A
Authority
GB
United Kingdom
Prior art keywords
bit
hole
earth
widening
hole drilled
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
GB56923/66A
Other languages
English (en)
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.)
JURGEN HOCHSTRASCER
Original Assignee
JURGEN HOCHSTRASCER
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 JURGEN HOCHSTRASCER filed Critical JURGEN HOCHSTRASCER
Publication of GB1133803A publication Critical patent/GB1133803A/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
    • 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
    • E21B11/00—Other drilling tools
    • E21B11/02—Boring rams
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB56923/66A 1966-04-06 1966-12-20 Method and drill bit for widening the lower end of a drill hole drilled in the earth Expired GB1133803A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEH0059028 1966-04-06
DEH0060280 1966-08-19

Publications (1)

Publication Number Publication Date
GB1133803A true GB1133803A (en) 1968-11-20

Family

ID=25980408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56923/66A Expired GB1133803A (en) 1966-04-06 1966-12-20 Method and drill bit for widening the lower end of a drill hole drilled in the earth

Country Status (9)

Country Link
US (1) US3430717A (OSRAM)
AT (1) AT263668B (OSRAM)
BE (1) BE692019A (OSRAM)
CH (1) CH459075A (OSRAM)
DE (2) DE1634388B1 (OSRAM)
DK (1) DK111171B (OSRAM)
FR (1) FR1513620A (OSRAM)
GB (1) GB1133803A (OSRAM)
NL (1) NL6618252A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514650B1 (OSRAM) * 1970-03-16 1976-02-13

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US221646A (en) * 1879-11-11 Improvement in rock-drills
US281922A (en) * 1883-07-24 Rock-drill
US230863A (en) * 1880-08-10 Rock-drill
US711506A (en) * 1901-08-23 1902-10-21 William E Johnston Drill for oil or other wells.
GB256150A (en) * 1926-03-16 1926-08-05 August Wolfsholz Improvements in the construction of concrete piles
US1888282A (en) * 1929-11-19 1932-11-22 Miller Anthony Paul Method of installing piling
DE544182C (de) * 1930-12-03 1932-02-15 Georg Rothgiesser Abbauvorrichtung fuer unloesliche Massen, insbesondere Ton, durch Ausspuelen von Bohrloechern
US2011938A (en) * 1932-07-18 1935-08-20 Miller Anthony Paul Excavating tool
US2552939A (en) * 1948-06-05 1951-05-15 Elmo L Condra Wire line cleanout tool for oil wells
DE851488C (de) * 1951-03-22 1952-10-06 Braunkohlen Und Briketwerke Ro Verfahren und Vorrichtung zur Gewinnung und Foerderung von Mineralien

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514650B1 (OSRAM) * 1970-03-16 1976-02-13

Also Published As

Publication number Publication date
DK111171B (da) 1968-06-24
DE1634388B1 (de) 1970-05-27
US3430717A (en) 1969-03-04
FR1513620A (fr) 1968-02-16
CH459075A (de) 1968-06-30
BE692019A (OSRAM) 1967-06-30
NL6618252A (OSRAM) 1967-10-09
AT263668B (de) 1968-07-25
DE1634392A1 (de) 1970-12-17

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