AU640749B2 - Drill bit cutting array having discontinuities therein - Google Patents

Drill bit cutting array having discontinuities therein Download PDF

Info

Publication number
AU640749B2
AU640749B2 AU72617/91A AU7261791A AU640749B2 AU 640749 B2 AU640749 B2 AU 640749B2 AU 72617/91 A AU72617/91 A AU 72617/91A AU 7261791 A AU7261791 A AU 7261791A AU 640749 B2 AU640749 B2 AU 640749B2
Authority
AU
Australia
Prior art keywords
discontinuity
drill bit
array
cutting
discontinuities
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 - Fee Related
Application number
AU72617/91A
Other languages
English (en)
Other versions
AU7261791A (en
Inventor
Jacob Chow
Ralph M. Horton
Mark L. Jones
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.)
Saint Gobain Abrasives Inc
Original Assignee
Norton Co
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 Norton Co filed Critical Norton Co
Publication of AU7261791A publication Critical patent/AU7261791A/en
Application granted granted Critical
Publication of AU640749B2 publication Critical patent/AU640749B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like
AU72617/91A 1990-03-06 1991-03-05 Drill bit cutting array having discontinuities therein Expired - Fee Related AU640749B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49004190A 1990-03-06 1990-03-06
US490041 1995-06-13

Publications (2)

Publication Number Publication Date
AU7261791A AU7261791A (en) 1991-09-12
AU640749B2 true AU640749B2 (en) 1993-09-02

Family

ID=23946370

Family Applications (1)

Application Number Title Priority Date Filing Date
AU72617/91A Expired - Fee Related AU640749B2 (en) 1990-03-06 1991-03-05 Drill bit cutting array having discontinuities therein

Country Status (5)

Country Link
EP (1) EP0446765B1 (fr)
AU (1) AU640749B2 (fr)
CA (1) CA2037480A1 (fr)
DE (1) DE69109160T2 (fr)
NO (1) NO910866L (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6883624B2 (en) * 2003-01-31 2005-04-26 Smith International, Inc. Multi-lobed cutter element for drill bit
US6929079B2 (en) 2003-02-21 2005-08-16 Smith International, Inc. Drill bit cutter element having multiple cusps
GB2436025B (en) 2005-05-17 2008-02-20 Smith International Rolling cone drill bit
US7757789B2 (en) 2005-06-21 2010-07-20 Smith International, Inc. Drill bit and insert having bladed interface between substrate and coating
US7743855B2 (en) 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
US8205692B2 (en) 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US7798258B2 (en) 2007-01-03 2010-09-21 Smith International, Inc. Drill bit with cutter element having crossing chisel crests
US7686106B2 (en) 2007-01-03 2010-03-30 Smith International, Inc. Rock bit and inserts with wear relief grooves
US7631709B2 (en) 2007-01-03 2009-12-15 Smith International, Inc. Drill bit and cutter element having chisel crest with protruding pilot portion
US8607899B2 (en) 2011-02-18 2013-12-17 National Oilwell Varco, L.P. Rock bit and cutter teeth geometries
US20140182947A1 (en) 2012-12-28 2014-07-03 Smith International, Inc. Cutting insert for percussion drill bit
EP3117065A4 (fr) * 2014-03-11 2017-12-27 Varel International, Ind., L.P. Trépans à matrice courte et méthodologies de fabrication de trépans à matrice courte
AU2017207287A1 (en) 2016-01-13 2018-07-12 Schlumberger Technology B.V. Angled chisel insert

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233851B1 (fr) * 1986-02-19 1990-11-28 Strata Bit Corporation Elément de coupe comprenant un matériau composite brasé sur un boulon

Also Published As

Publication number Publication date
DE69109160T2 (de) 1995-08-31
EP0446765B1 (fr) 1995-04-26
EP0446765A1 (fr) 1991-09-18
NO910866D0 (no) 1991-03-05
DE69109160D1 (de) 1995-06-01
AU7261791A (en) 1991-09-12
NO910866L (no) 1991-09-09
CA2037480A1 (fr) 1991-09-07

Similar Documents

Publication Publication Date Title
US5147001A (en) Drill bit cutting array having discontinuities therein
US6725953B2 (en) Drill bit having diamond impregnated inserts primary cutting structure
US4889017A (en) Rotary drill bit for use in drilling holes in subsurface earth formations
EP0718462B1 (fr) Elément coupant pour trépan de forage et procédé de montage d'un élément coupant sur un trépan de forage
US4991670A (en) Rotary drill bit for use in drilling holes in subsurface earth formations
EP0828917B1 (fr) Structures de coupe essentiellement en diamant destinees aux forages
CA2552934C (fr) Pieces rapportees en diamant stables a la chaleur pour jauge et talon de trepans a molettes
US6009962A (en) Impregnated type rotary drill bits
AU640749B2 (en) Drill bit cutting array having discontinuities therein
US4186628A (en) Rotary drill bit and method for making same
US6009963A (en) Superabrasive cutting element with enhanced stiffness, thermal conductivity and cutting efficiency
US5881830A (en) Superabrasive drill bit cutting element with buttress-supported planar chamfer
EP0169683B1 (fr) Trépans de forage rotatif
US6202770B1 (en) Superabrasive cutting element with enhanced durability and increased wear life and apparatus so equipped
EP0916803B1 (fr) Trépan de forage rotatif pour le fraisage d'un tubage de puits et de forage d'une formation souterraine
EP0246789A2 (fr) Elément de coupe pour un trépan rotatif, trépan rotatif avec un tel élément, et procédé de fabrication de cet élément
EP0144222B1 (fr) Trépan de forage rotatif
EP0155026B1 (fr) Trépan de forage rotatif avec éléments de coupe comportant une fine couche abrasive
US7469757B2 (en) Drill bit with diamond impregnated cutter element
EP0291314A2 (fr) Structure de coupe et trépan de forage rotatif comportant une telle structure
US5092310A (en) Mining pick
CA2584928C (fr) Trepan comprenant une structure de coupe principale avec pieces rapportees impregnees de diamant