NO20022831L - Borekrone for boring under kjöring av fôringsrör - Google Patents

Borekrone for boring under kjöring av fôringsrör

Info

Publication number
NO20022831L
NO20022831L NO20022831A NO20022831A NO20022831L NO 20022831 L NO20022831 L NO 20022831L NO 20022831 A NO20022831 A NO 20022831A NO 20022831 A NO20022831 A NO 20022831A NO 20022831 L NO20022831 L NO 20022831L
Authority
NO
Norway
Prior art keywords
drill bit
drilling
feeding casing
soft
drill
Prior art date
Application number
NO20022831A
Other languages
English (en)
Other versions
NO20022831D0 (no
NO325412B1 (no
Inventor
Michael Wardley
Original Assignee
Weatherford Lamb
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 GBGB9930287.9A external-priority patent/GB9930287D0/en
Priority claimed from GB0018309A external-priority patent/GB0018309D0/en
Application filed by Weatherford Lamb filed Critical Weatherford Lamb
Publication of NO20022831D0 publication Critical patent/NO20022831D0/no
Publication of NO20022831L publication Critical patent/NO20022831L/no
Publication of NO325412B1 publication Critical patent/NO325412B1/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/14—Casing shoes for the protection of the bottom of the casing
    • 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Landscapes

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

Abstract

En borekrone (1) for boring under kjøring av foringsrør i et borehull. Borekronen er oppbygd av en kombinasjon av relativt mykt og relativt hardt materiale. Materialforholdene velges slik at borekronen tilveiebringer en hensiktsmessig skjæring og boring av borehullet mens den kan gjennombores av en sen-ere borekrone. Det er tilveiebrakt fremgangsmåter for påfø-ring av harde materialer på et mykt materiale.
NO20022831A 1999-12-22 2002-06-14 Borekrone for boring under kjoring av fôringsror NO325412B1 (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9930287.9A GB9930287D0 (en) 1999-12-22 1999-12-22 Casing drilling bit
GB0018309A GB0018309D0 (en) 2000-07-27 2000-07-27 Casing drilling bit
PCT/GB2000/004936 WO2001046550A1 (en) 1999-12-22 2000-12-21 Drilling bit for drilling while running casing

Publications (3)

Publication Number Publication Date
NO20022831D0 NO20022831D0 (no) 2002-06-14
NO20022831L true NO20022831L (no) 2002-06-14
NO325412B1 NO325412B1 (no) 2008-04-21

Family

ID=26244723

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20022831A NO325412B1 (no) 1999-12-22 2002-06-14 Borekrone for boring under kjoring av fôringsror

Country Status (7)

Country Link
US (1) US7216727B2 (no)
EP (1) EP1242711B1 (no)
AU (1) AU776634B2 (no)
CA (1) CA2393754C (no)
DE (1) DE60030159D1 (no)
NO (1) NO325412B1 (no)
WO (1) WO2001046550A1 (no)

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NO20022831D0 (no) 2002-06-14
AU2015801A (en) 2001-07-03
US20020189863A1 (en) 2002-12-19
EP1242711A1 (en) 2002-09-25
NO325412B1 (no) 2008-04-21
EP1242711B1 (en) 2006-08-16
US7216727B2 (en) 2007-05-15
AU776634B2 (en) 2004-09-16
WO2001046550A1 (en) 2001-06-28
CA2393754A1 (en) 2001-06-28
DE60030159D1 (de) 2006-09-28

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