ITTO980751A0 - Utensile di perforazione rotante direzionabile a lame dentate con ag- gressivita' di spessore variabile in senso longitudinale. - Google Patents

Utensile di perforazione rotante direzionabile a lame dentate con ag- gressivita' di spessore variabile in senso longitudinale.

Info

Publication number
ITTO980751A0
ITTO980751A0 IT98TO000751A ITTO980751A ITTO980751A0 IT TO980751 A0 ITTO980751 A0 IT TO980751A0 IT 98TO000751 A IT98TO000751 A IT 98TO000751A IT TO980751 A ITTO980751 A IT TO980751A IT TO980751 A0 ITTO980751 A0 IT TO980751A0
Authority
IT
Italy
Prior art keywords
aggressivity
longitudinal direction
drilling tool
rotary drilling
variable thickness
Prior art date
Application number
IT98TO000751A
Other languages
English (en)
Inventor
Rudolph Pessier
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
Publication of ITTO980751A0 publication Critical patent/ITTO980751A0/it
Publication of ITTO980751A1 publication Critical patent/ITTO980751A1/it
Application granted granted Critical
Publication of IT1303564B1 publication Critical patent/IT1303564B1/it

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • 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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor

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)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling Tools (AREA)
IT1998TO000751A 1997-09-08 1998-09-07 Utensile da perforazione rotante direzionabile a lame dentate conaggressivita' di spessore variabile in senso longitudinale. IT1303564B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/925,227 US5967247A (en) 1997-09-08 1997-09-08 Steerable rotary drag bit with longitudinally variable gage aggressiveness

Publications (3)

Publication Number Publication Date
ITTO980751A0 true ITTO980751A0 (it) 1998-09-07
ITTO980751A1 ITTO980751A1 (it) 2000-03-07
IT1303564B1 IT1303564B1 (it) 2000-11-14

Family

ID=25451421

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1998TO000751A IT1303564B1 (it) 1997-09-08 1998-09-07 Utensile da perforazione rotante direzionabile a lame dentate conaggressivita' di spessore variabile in senso longitudinale.

Country Status (4)

Country Link
US (1) US5967247A (it)
BE (1) BE1012751A5 (it)
GB (1) GB2328964B (it)
IT (1) IT1303564B1 (it)

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US6536543B2 (en) 2000-12-06 2003-03-25 Baker Hughes Incorporated Rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles
US6484825B2 (en) 2001-01-27 2002-11-26 Camco International (Uk) Limited Cutting structure for earth boring drill bits
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Also Published As

Publication number Publication date
GB2328964A (en) 1999-03-10
US5967247A (en) 1999-10-19
ITTO980751A1 (it) 2000-03-07
GB9819187D0 (en) 1998-10-28
IT1303564B1 (it) 2000-11-14
BE1012751A5 (fr) 2001-03-06
GB2328964B (en) 2001-09-12

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