EP0106702A3 - Drill bit assembly having improved operational life - Google Patents

Drill bit assembly having improved operational life Download PDF

Info

Publication number
EP0106702A3
EP0106702A3 EP83306326A EP83306326A EP0106702A3 EP 0106702 A3 EP0106702 A3 EP 0106702A3 EP 83306326 A EP83306326 A EP 83306326A EP 83306326 A EP83306326 A EP 83306326A EP 0106702 A3 EP0106702 A3 EP 0106702A3
Authority
EP
European Patent Office
Prior art keywords
vanes
flow
drill
housing
bit assembly
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Withdrawn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
EP83306326A
Other languages
German (de)
French (fr)
Other versions
EP0106702A2 (en
Inventor
Donald David Drummond
Roy Wilbert Wood
Walter Frank Johnsey
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.)
DRUMCO
Original Assignee
DRUMCO
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 US06/435,239 external-priority patent/US4541494A/en
Priority claimed from US06/503,265 external-priority patent/US4540055A/en
Application filed by DRUMCO filed Critical DRUMCO
Publication of EP0106702A2 publication Critical patent/EP0106702A2/en
Publication of EP0106702A3 publication Critical patent/EP0106702A3/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Withdrawn legal-status Critical Current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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • 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
    • 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
    • E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids

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

A drill bit assembly has an elongated housing in which a drill is provided with a generally cylindrical shape for receiving an enlarged tool end with somewhat greater diameter, the tool having cutting cones for cutting a drill hole in material to be drilled. Air is fed to a plenum chamber within the housing out of which are fed two air flows. The first flow is directed to the region of the cutting cones and is of reduced magnitude sufficient only for removing dust and cuttings away from the bit assembly up along the sides of the bit. A plurality of vanes are provided on the housing to direct the first flow into a helical path the general pitch of the vanes. The vanes are caused to overlap one another in the direction of flow. A plurality of jet nozzles are provided from the plenum chamber at the side of the housing intermediate each pair of vanes and aligned so that the second flow will be in line with the first flow and generally parallel to the vanes in the general direction of the drill end and away from the cutting cones. Centrifugal force thus imparted keeps parti­ cles away from the drill bit and the pipe extensions and thereby reduces wear.
EP83306326A 1982-10-19 1983-10-18 Drill bit assembly having improved operational life Withdrawn EP0106702A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US435239 1982-10-19
US06/435,239 US4541494A (en) 1982-10-19 1982-10-19 Drill bit assembly
US503265 1983-06-10
US06/503,265 US4540055A (en) 1983-06-10 1983-06-10 Drill bit assembly having improved operational life

Publications (2)

Publication Number Publication Date
EP0106702A2 EP0106702A2 (en) 1984-04-25
EP0106702A3 true EP0106702A3 (en) 1986-02-05

Family

ID=27030480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306326A Withdrawn EP0106702A3 (en) 1982-10-19 1983-10-18 Drill bit assembly having improved operational life

Country Status (1)

Country Link
EP (1) EP0106702A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461345B (en) * 1985-06-03 1990-02-05 Sandvik Rock Tools Ab SETTING AND DEVICE CAREFULLY DOWNLOAD FEEDING ROOMS BY ORIGINAL MARK AND ORIGINAL CONSTRUCTIONS
GB8620362D0 (en) * 1986-08-21 1986-10-01 Smith Int North Sea Milling tool
US20090279966A1 (en) * 2008-05-12 2009-11-12 Baker Hughes Incorporated Reverse flow mill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334788A (en) * 1940-08-12 1943-11-23 Charles M O'leary Hydraulic bore cleaner and cement shoe
US2634101A (en) * 1949-07-08 1953-04-07 Sloan Pearl Apparatus for accelerating the removal of cuttings from the bottom of wells
US3848683A (en) * 1972-02-10 1974-11-19 Atlas Copco Ab Method and means for drilling
US4049066A (en) * 1976-04-19 1977-09-20 Richey Vernon T Apparatus for reducing annular back pressure near the drill bit
US4083417A (en) * 1976-11-12 1978-04-11 Arnold James F Jetting apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334788A (en) * 1940-08-12 1943-11-23 Charles M O'leary Hydraulic bore cleaner and cement shoe
US2634101A (en) * 1949-07-08 1953-04-07 Sloan Pearl Apparatus for accelerating the removal of cuttings from the bottom of wells
US3848683A (en) * 1972-02-10 1974-11-19 Atlas Copco Ab Method and means for drilling
US4049066A (en) * 1976-04-19 1977-09-20 Richey Vernon T Apparatus for reducing annular back pressure near the drill bit
US4083417A (en) * 1976-11-12 1978-04-11 Arnold James F Jetting apparatus

Also Published As

Publication number Publication date
EP0106702A2 (en) 1984-04-25

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860725

17Q First examination report despatched

Effective date: 19870706

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890427

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JOHNSEY, WALTER FRANK

Inventor name: WOOD, ROY WILBERT

Inventor name: DRUMMOND, DONALD DAVID