GB2170530B - Improvements relating to reamers - Google Patents

Improvements relating to reamers

Info

Publication number
GB2170530B
GB2170530B GB08503041A GB8503041A GB2170530B GB 2170530 B GB2170530 B GB 2170530B GB 08503041 A GB08503041 A GB 08503041A GB 8503041 A GB8503041 A GB 8503041A GB 2170530 B GB2170530 B GB 2170530B
Authority
GB
United Kingdom
Prior art keywords
reamers
improvements relating
relating
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
GB08503041A
Other versions
GB8503041D0 (en
GB2170530A (en
Inventor
Roy Bruce Miller
Ziemowit Jan Sliwinski
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.)
Cementation Skanska Ltd
Original Assignee
Cementation Piling and Foundations Ltd
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 Cementation Piling and Foundations Ltd filed Critical Cementation Piling and Foundations Ltd
Priority to GB08503041A priority Critical patent/GB2170530B/en
Publication of GB8503041D0 publication Critical patent/GB8503041D0/en
Publication of GB2170530A publication Critical patent/GB2170530A/en
Application granted granted Critical
Publication of GB2170530B publication Critical patent/GB2170530B/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor
    • 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
    • E21B7/001—Drilling a non circular hole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB08503041A 1985-02-06 1985-02-06 Improvements relating to reamers Expired GB2170530B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08503041A GB2170530B (en) 1985-02-06 1985-02-06 Improvements relating to reamers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08503041A GB2170530B (en) 1985-02-06 1985-02-06 Improvements relating to reamers

Publications (3)

Publication Number Publication Date
GB8503041D0 GB8503041D0 (en) 1985-03-06
GB2170530A GB2170530A (en) 1986-08-06
GB2170530B true GB2170530B (en) 1987-10-21

Family

ID=10574054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08503041A Expired GB2170530B (en) 1985-02-06 1985-02-06 Improvements relating to reamers

Country Status (1)

Country Link
GB (1) GB2170530B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105401883A (en) * 2014-05-14 2016-03-16 衢州市易凡设计有限公司 Pile hole intelligent expanding method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862393A (en) * 1956-05-18 1961-03-08 Gewerk Eisenhuette Westfalia Roof support with goaf screen in mines
GB878634A (en) * 1957-01-24 1961-10-04 Gewerk Eisenhuette Westfalia Method and apparatus for the automatic winning of coal in steeply inclined seams, more particularly by means of a coal plough

Also Published As

Publication number Publication date
GB8503041D0 (en) 1985-03-06
GB2170530A (en) 1986-08-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930206