AT264423B - Method and roller bit for widening a borehole in rock - Google Patents

Method and roller bit for widening a borehole in rock

Info

Publication number
AT264423B
AT264423B AT796666A AT796666A AT264423B AT 264423 B AT264423 B AT 264423B AT 796666 A AT796666 A AT 796666A AT 796666 A AT796666 A AT 796666A AT 264423 B AT264423 B AT 264423B
Authority
AT
Austria
Prior art keywords
borehole
widening
rock
roller bit
bit
Prior art date
Application number
AT796666A
Other languages
German (de)
Original Assignee
Beteiligungs & Patentverw Gmbh
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 Beteiligungs & Patentverw Gmbh filed Critical Beteiligungs & Patentverw Gmbh
Application granted granted Critical
Publication of AT264423B publication Critical patent/AT264423B/en

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
    • E21B10/325—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 the cutter being shifted by a spring mechanism
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads
    • E21D9/115—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads with cutting tools mounted pivotably or slidable on the head

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
AT796666A 1965-08-24 1966-08-22 Method and roller bit for widening a borehole in rock AT264423B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0083403 1965-08-24

Publications (1)

Publication Number Publication Date
AT264423B true AT264423B (en) 1968-08-26

Family

ID=6981954

Family Applications (1)

Application Number Title Priority Date Filing Date
AT796666A AT264423B (en) 1965-08-24 1966-08-22 Method and roller bit for widening a borehole in rock

Country Status (3)

Country Link
AT (1) AT264423B (en)
CH (1) CH439185A (en)
GB (1) GB1111256A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO176528C (en) * 1992-02-17 1995-04-19 Kverneland Klepp As Device at drill bit
GB2412388B (en) 2004-03-27 2006-09-27 Schlumberger Holdings Bottom hole assembly

Also Published As

Publication number Publication date
GB1111256A (en) 1968-04-24
CH439185A (en) 1967-07-15

Similar Documents

Publication Publication Date Title
AT302933B (en) Device for cementing a drill pipe in a borehole
AR215408A1 (en) APPARATUS FOR INVESTIGATING FORMATIONS ADAPTED TO BE SUSPENDED IN A DRILL WELL THROUGH LAND FORMATIONS
AT291892B (en) Device for cementing casing in a borehole
AT333687B (en) METHOD AND DEVICE FOR ROCK DRILLING AND / OR EARTH DRILLING
CA949058A (en) Method and apparatus for use in drilling offshore wells
AT274708B (en) Method of cementing a borehole
AT296190B (en) Overlay drilling rig and method for its operation
AT338727B (en) METHOD AND DEVICE FOR MINER ROTARY OR ROTARY DRILLING
CH512056A (en) Device for setting up a drilling and boring tool
CH517243A (en) Rock and earth auger for rotary drilling
CH464093A (en) Method and device for drilling through dams from layers of earth or rock
DK109441C (en) Method for hydraulically drilling a borehole and apparatus for performing the method.
AT293977B (en) Drilling device for drilling a directed borehole
AT303905B (en) Method and device for reworking a hardened steel roll
AT270537B (en) Method and device for drilling holes in a mountain covered by earth or loose rock
AT262190B (en) Method of knocking down the drill bit of a drill bit and drill bit
BR7300550D0 (en) IMPROVEMENTS IN DENSITY MEDICATION PROCESSES AND DEVICES FOR GEOLOGICAL FORMATIONS
CH520864A (en) Holding device for a cutting insert in a rotatable drill head for rock drilling and method for its operation
CH439185A (en) Method and device for widening a borehole in rock
AT303646B (en) Method and roller bit for removing drilled material from a borehole
AT274528B (en) Method and device for deep drawing a blank
AT288292B (en) Method and device for attaching rock bolts
AT272040B (en) Drilling machine for face and boring
CA703946A (en) Method and apparatus for drilling and working in offshore wells
AT249474B (en) Process for core drilling long boreholes