DE69735096D1 - Aufweitbohrkopf mit verbesserte stabilität und übergang von der pilotbohrung zur vergrösserten bohrung - Google Patents

Aufweitbohrkopf mit verbesserte stabilität und übergang von der pilotbohrung zur vergrösserten bohrung

Info

Publication number
DE69735096D1
DE69735096D1 DE69735096T DE69735096T DE69735096D1 DE 69735096 D1 DE69735096 D1 DE 69735096D1 DE 69735096 T DE69735096 T DE 69735096T DE 69735096 T DE69735096 T DE 69735096T DE 69735096 D1 DE69735096 D1 DE 69735096D1
Authority
DE
Germany
Prior art keywords
drilling
transition
improved stability
enlarged bore
wire
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 - Lifetime
Application number
DE69735096T
Other languages
English (en)
Inventor
L Doster
C Pessier
M Schnell
T Mcdonald
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes 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 Baker Hughes Inc filed Critical Baker Hughes Inc
Application granted granted Critical
Publication of DE69735096D1 publication Critical patent/DE69735096D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

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)
DE69735096T 1996-10-09 1997-10-08 Aufweitbohrkopf mit verbesserte stabilität und übergang von der pilotbohrung zur vergrösserten bohrung Expired - Lifetime DE69735096D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/727,879 US5765653A (en) 1996-10-09 1996-10-09 Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter
PCT/US1997/018213 WO1998015710A1 (en) 1996-10-09 1997-10-08 Reaming apparatus with enhanced stability and transition from pilot hole to enlarged bore diameter

Publications (1)

Publication Number Publication Date
DE69735096D1 true DE69735096D1 (de) 2006-04-06

Family

ID=24924461

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69735096T Expired - Lifetime DE69735096D1 (de) 1996-10-09 1997-10-08 Aufweitbohrkopf mit verbesserte stabilität und übergang von der pilotbohrung zur vergrösserten bohrung

Country Status (5)

Country Link
US (2) US5765653A (de)
EP (1) EP0865561B1 (de)
AU (1) AU4897297A (de)
DE (1) DE69735096D1 (de)
WO (1) WO1998015710A1 (de)

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Also Published As

Publication number Publication date
AU4897297A (en) 1998-05-05
US6116356A (en) 2000-09-12
WO1998015710A1 (en) 1998-04-16
US5765653A (en) 1998-06-16
EP0865561A1 (de) 1998-09-23
EP0865561B1 (de) 2006-01-11

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Legal Events

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8332 No legal effect for de