GB9708677D0 - Drill means - Google Patents

Drill means

Info

Publication number
GB9708677D0
GB9708677D0 GBGB9708677.1A GB9708677A GB9708677D0 GB 9708677 D0 GB9708677 D0 GB 9708677D0 GB 9708677 A GB9708677 A GB 9708677A GB 9708677 D0 GB9708677 D0 GB 9708677D0
Authority
GB
United Kingdom
Prior art keywords
drill means
drill
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Withdrawn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
GBGB9708677.1A
Other versions
GB2312700A (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.)
BULROC U K Ltd
Original Assignee
BULROC U K 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
Priority claimed from GBGB9609078.2A external-priority patent/GB9609078D0/en
Application filed by BULROC U K Ltd filed Critical BULROC U K Ltd
Priority to GB9708677A priority Critical patent/GB2312700A/en
Publication of GB9708677D0 publication Critical patent/GB9708677D0/en
Publication of GB2312700A publication Critical patent/GB2312700A/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Withdrawn legal-status Critical Current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
    • E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

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)
GB9708677A 1996-05-01 1997-04-30 Eccentric drill head detachably secured to drive means Withdrawn GB2312700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9708677A GB2312700A (en) 1996-05-01 1997-04-30 Eccentric drill head detachably secured to drive means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9609078.2A GB9609078D0 (en) 1996-05-01 1996-05-01 Drill means
GB9708677A GB2312700A (en) 1996-05-01 1997-04-30 Eccentric drill head detachably secured to drive means

Publications (2)

Publication Number Publication Date
GB9708677D0 true GB9708677D0 (en) 1997-06-18
GB2312700A GB2312700A (en) 1997-11-05

Family

ID=26309243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9708677A Withdrawn GB2312700A (en) 1996-05-01 1997-04-30 Eccentric drill head detachably secured to drive means

Country Status (1)

Country Link
GB (1) GB2312700A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6112835A (en) * 1998-07-23 2000-09-05 Sandvik Ab Drilling apparatus having a radially displaceable reamer
DE102005054041A1 (en) * 2005-11-12 2007-05-24 Karnebogen Gmbh Drilling tool for drilling in earthy and / or stony ground

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE458943B (en) * 1984-10-10 1989-05-22 Jan Persson CLUTCH BETWEEN A DRILL CHRONICLE AND BORRAXEL
US5009271A (en) * 1990-07-16 1991-04-23 Milan Maric Drill assembly

Also Published As

Publication number Publication date
GB2312700A (en) 1997-11-05

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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)