NO20004441L - Bi-senter borkrone tilpasset ledesko - Google Patents

Bi-senter borkrone tilpasset ledesko

Info

Publication number
NO20004441L
NO20004441L NO20004441A NO20004441A NO20004441L NO 20004441 L NO20004441 L NO 20004441L NO 20004441 A NO20004441 A NO 20004441A NO 20004441 A NO20004441 A NO 20004441A NO 20004441 L NO20004441 L NO 20004441L
Authority
NO
Norway
Prior art keywords
drill bit
cutting
guide shoes
center drill
bit adapted
Prior art date
Application number
NO20004441A
Other languages
English (en)
Other versions
NO20004441D0 (no
Inventor
Coy M Fielder
Rogerio H Silva
Original Assignee
Diamond Products Internat Inc
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 Diamond Products Internat Inc filed Critical Diamond Products Internat Inc
Publication of NO20004441D0 publication Critical patent/NO20004441D0/no
Publication of NO20004441L publication Critical patent/NO20004441L/no

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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Glass Compositions (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

Det er tilveiebragt en bi-senter borkrone (100) som kan anvendes etter tur i et foringsrør og i en formasjon uten behov for å fjerne borkronen fra borehullet. Borkronen omfatter et borkronelegeme (102) som kan forbindes med en borestreng. Legemet definerer en pilotborkrone (103) og en mellomliggende opprømmersekjon (105). Et mangfold kutte-eller sliteelementer (116) befinner seg på kuttebladene anordnet om kuttefronten til pilotseksjonen og opprømmerseksjonen. Legemet definerer en gjennomføringsdimensjon. Kutte- eller sliteelementene anordnet på et eller flere av bladene som strekker seg til eller er nær gjennomføringsdimensjonen definerer en vinkel mellom kontaktlinjen på kutte- eller sliteelementet og materialet som skal bores på mellom 5 og 45°.
NO20004441A 1999-09-08 2000-09-06 Bi-senter borkrone tilpasset ledesko NO20004441L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/392,043 US6340064B2 (en) 1999-02-03 1999-09-08 Bi-center bit adapted to drill casing shoe

Publications (2)

Publication Number Publication Date
NO20004441D0 NO20004441D0 (no) 2000-09-06
NO20004441L true NO20004441L (no) 2001-03-09

Family

ID=23549020

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20004441A NO20004441L (no) 1999-09-08 2000-09-06 Bi-senter borkrone tilpasset ledesko

Country Status (5)

Country Link
US (2) US6340064B2 (no)
EP (1) EP1091083B9 (no)
CA (1) CA2304966C (no)
DE (1) DE60023238T2 (no)
NO (1) NO20004441L (no)

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Also Published As

Publication number Publication date
US6629476B2 (en) 2003-10-07
CA2304966A1 (en) 2001-03-08
EP1091083B1 (en) 2005-10-19
US20010045306A1 (en) 2001-11-29
US20020092378A1 (en) 2002-07-18
US6340064B2 (en) 2002-01-22
EP1091083A1 (en) 2001-04-11
DE60023238D1 (de) 2006-03-02
DE60023238T2 (de) 2006-07-13
EP1091083B9 (en) 2006-06-28
CA2304966C (en) 2005-04-05
NO20004441D0 (no) 2000-09-06

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