GB8500129D0 - Drilling device - Google Patents

Drilling device

Info

Publication number
GB8500129D0
GB8500129D0 GB858500129A GB8500129A GB8500129D0 GB 8500129 D0 GB8500129 D0 GB 8500129D0 GB 858500129 A GB858500129 A GB 858500129A GB 8500129 A GB8500129 A GB 8500129A GB 8500129 D0 GB8500129 D0 GB 8500129D0
Authority
GB
United Kingdom
Prior art keywords
drilling device
drilling
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.)
Withdrawn
Application number
GB858500129A
Other versions
GB2172315A (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.)
Luen L M
Original Assignee
Luen L M
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 Luen L M filed Critical Luen L M
Priority to GB08500129A priority Critical patent/GB2172315A/en
Publication of GB8500129D0 publication Critical patent/GB8500129D0/en
Publication of GB2172315A publication Critical patent/GB2172315A/en
Withdrawn legal-status Critical Current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
    • E21B10/325—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

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)
GB08500129A 1985-01-04 1985-01-04 Expandable-contractable drilling device Withdrawn GB2172315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08500129A GB2172315A (en) 1985-01-04 1985-01-04 Expandable-contractable drilling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08500129A GB2172315A (en) 1985-01-04 1985-01-04 Expandable-contractable drilling device

Publications (2)

Publication Number Publication Date
GB8500129D0 true GB8500129D0 (en) 1985-02-13
GB2172315A GB2172315A (en) 1986-09-17

Family

ID=10572386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08500129A Withdrawn GB2172315A (en) 1985-01-04 1985-01-04 Expandable-contractable drilling device

Country Status (1)

Country Link
GB (1) GB2172315A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968604A (en) * 2017-05-27 2017-07-21 河南理工大学 Reamer inside mine anchor rod hole

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320270B (en) * 1996-12-06 2001-01-17 Psl Tools Ltd Downhole tool
GB2365888B (en) 2000-08-11 2002-07-24 Renovus Ltd Drilling apparatus
CN102220760B (en) * 2011-04-14 2012-11-07 李国忠 Method for casting deep inverted T-shaped pile
CN106968694B (en) * 2017-05-27 2018-12-04 河南理工大学 Roadway support mine anchor rod construction method of installation
CN106958419B (en) * 2017-05-27 2018-08-17 河南理工大学 Mine anchor rod hole screw drive formula reaming drilling rod
CN110552730B (en) * 2019-09-08 2021-03-19 湖南湘牵工业有限公司 Self-advancing anchor rod capable of recycling drill bit for tunnel construction

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB606058A (en) *
GB215051A (en) * 1923-01-08 1924-05-08 Richard Ford Jenkins Improved operative tool for well-boring
GB401721A (en) * 1932-05-18 1933-11-20 Baker Oil Tools Inc Hydraulic underreamer
GB1199031A (en) * 1967-06-14 1970-07-15 Navenby Ltd Improvements in or relating to Cutter Bits and methods of Anchoring
US3552507A (en) * 1968-11-25 1971-01-05 Cicero C Brown System for rotary drilling of wells using casing as the drill string
GB1378712A (en) * 1973-02-01 1974-12-27 Universal Anchorage Holdings L Cutter bit
GB1516491A (en) * 1976-05-06 1978-07-05 A Z Int Tool Co Well drilling method and apparatus therefor
GB2128657A (en) * 1982-10-22 1984-05-02 Coal Ind Drilling methods and equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968604A (en) * 2017-05-27 2017-07-21 河南理工大学 Reamer inside mine anchor rod hole

Also Published As

Publication number Publication date
GB2172315A (en) 1986-09-17

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)