GB2208672B - Drill bit with full offset cutter bodies - Google Patents

Drill bit with full offset cutter bodies

Info

Publication number
GB2208672B
GB2208672B GB8822256A GB8822256A GB2208672B GB 2208672 B GB2208672 B GB 2208672B GB 8822256 A GB8822256 A GB 8822256A GB 8822256 A GB8822256 A GB 8822256A GB 2208672 B GB2208672 B GB 2208672B
Authority
GB
United Kingdom
Prior art keywords
drill bit
cutter bodies
full offset
offset cutter
full
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
Application number
GB8822256A
Other versions
GB2208672A (en
GB8822256D0 (en
Inventor
Lawrence Frear
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.)
SPIRAL DRILLING SYSTEMS Inc
Original Assignee
SPIRAL DRILLING SYSTEMS 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
Priority claimed from US06/626,237 external-priority patent/US4552232A/en
Priority claimed from GB08527556A external-priority patent/GB2182692B/en
Application filed by SPIRAL DRILLING SYSTEMS Inc filed Critical SPIRAL DRILLING SYSTEMS Inc
Priority to GB8822256A priority Critical patent/GB2208672B/en
Publication of GB8822256D0 publication Critical patent/GB8822256D0/en
Publication of GB2208672A publication Critical patent/GB2208672A/en
Application granted granted Critical
Publication of GB2208672B publication Critical patent/GB2208672B/en
Expired 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
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant
    • 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
    • E21B10/08—Roller bits
    • E21B10/10—Roller bits with roller axle supported at both ends
    • 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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement

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)
GB8822256A 1984-06-29 1988-09-21 Drill bit with full offset cutter bodies Expired GB2208672B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8822256A GB2208672B (en) 1984-06-29 1988-09-21 Drill bit with full offset cutter bodies

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/626,237 US4552232A (en) 1984-06-29 1984-06-29 Drill-bit with full offset cutter bodies
GB08527556A GB2182692B (en) 1984-06-29 1985-11-08 Drill bit with full offset cutter bodies
GB8822256A GB2208672B (en) 1984-06-29 1988-09-21 Drill bit with full offset cutter bodies

Publications (3)

Publication Number Publication Date
GB8822256D0 GB8822256D0 (en) 1988-10-26
GB2208672A GB2208672A (en) 1989-04-12
GB2208672B true GB2208672B (en) 1989-10-11

Family

ID=27262839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8822256A Expired GB2208672B (en) 1984-06-29 1988-09-21 Drill bit with full offset cutter bodies

Country Status (1)

Country Link
GB (1) GB2208672B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167107A (en) * 1984-11-15 1986-05-21 Keith Malcolm Brown Drilling bits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167107A (en) * 1984-11-15 1986-05-21 Keith Malcolm Brown Drilling bits

Also Published As

Publication number Publication date
GB2208672A (en) 1989-04-12
GB8822256D0 (en) 1988-10-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20031108