FR2301680A1 - Rotating drilling bit nozzle arrangement - has large nozzle between first and second cutting parts of each of three arms - Google Patents

Rotating drilling bit nozzle arrangement - has large nozzle between first and second cutting parts of each of three arms

Info

Publication number
FR2301680A1
FR2301680A1 FR7604158A FR7604158A FR2301680A1 FR 2301680 A1 FR2301680 A1 FR 2301680A1 FR 7604158 A FR7604158 A FR 7604158A FR 7604158 A FR7604158 A FR 7604158A FR 2301680 A1 FR2301680 A1 FR 2301680A1
Authority
FR
France
Prior art keywords
cutting
nozzle
arms
cutting parts
passage
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.)
Withdrawn
Application number
FR7604158A
Other languages
French (fr)
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries 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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of FR2301680A1 publication Critical patent/FR2301680A1/en
Withdrawn legal-status Critical Current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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems

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)

Abstract

The drill bit for bore holes has a body with a passage for supplying fluid to the bore hole face. Each arm is fitted with a bearing shaft supporting three individual cutting parts, forming three cutting pairs. The cutting pairs (15,, 16, 17) are not uniformly spaced on the bit body (11) and between at least one cutting pair is a nozzle for guiding the fluid through the bit body. The nozzle consists of an unusually large hollow nozzle mounted between one cutting pair and connected to the passage, or of two unusually larger hollow nozzle mounted between two cutting pairs and connected to the passage. Each of the downwards projecting arms (12, 13, 14) has a downwards and inwards projecting shaft which supports three conical cutting parts (15, 16, 17).
FR7604158A 1975-02-18 1976-02-16 Rotating drilling bit nozzle arrangement - has large nozzle between first and second cutting parts of each of three arms Withdrawn FR2301680A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55078275A 1975-02-18 1975-02-18

Publications (1)

Publication Number Publication Date
FR2301680A1 true FR2301680A1 (en) 1976-09-17

Family

ID=24198547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7604158A Withdrawn FR2301680A1 (en) 1975-02-18 1976-02-16 Rotating drilling bit nozzle arrangement - has large nozzle between first and second cutting parts of each of three arms

Country Status (4)

Country Link
DE (1) DE2606712A1 (en)
FR (1) FR2301680A1 (en)
NO (1) NO760008L (en)
SE (1) SE7601187L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687067A (en) * 1986-05-01 1987-08-18 Smith International, Inc. Crossflow rotary cone rock bit with extended nozzles

Also Published As

Publication number Publication date
SE7601187L (en) 1976-08-19
NO760008L (en) 1976-08-19
DE2606712A1 (en) 1976-08-19

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Legal Events

Date Code Title Description
ST Notification of lapse