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WO1999028589A1 - Ensemble de coupe a auto-aiguisage continu servant dans des systemes de forage - Google Patents

Ensemble de coupe a auto-aiguisage continu servant dans des systemes de forage Download PDF

Info

Publication number
WO1999028589A1
WO1999028589A1 PCT/US1998/025446 US9825446W WO9928589A1 WO 1999028589 A1 WO1999028589 A1 WO 1999028589A1 US 9825446 W US9825446 W US 9825446W WO 9928589 A1 WO9928589 A1 WO 9928589A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
stud
cutting table
cutting assembly
assembly according
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.)
Ceased
Application number
PCT/US1998/025446
Other languages
English (en)
Inventor
Robert Paul Radtke
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU16154/99A priority Critical patent/AU1615499A/en
Publication of WO1999028589A1 publication Critical patent/WO1999028589A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • 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
    • E21B10/006—Drill bits providing a cutting edge which is self-renewable during drilling

Definitions

  • This invention relates to cutting assemblies used with petroleum or other
  • this invention relates to polycrystalline
  • PDC diamond compact
  • TSP thermally stable polycrystalline diamond
  • sharpening cutting assemblies fabricated in the form of a thick- wall hollow
  • Rotary drill bits used in earth drilling are primarily of two major types.
  • roller cone bit having three legs depending from
  • bit body which support three roller cones carrying steel or tungsten carbide teeth
  • diamond bits There are several types of diamond bits known to the drilling industry. In one type, the diamonds are very small and are randomly distributed in a
  • Another type contains diamonds of a larger size positioned in
  • a diamond bit a PDC diamond bit and a TSP diamond bit, all of which are
  • Rotary drill bits of the kind to which the invention relates to comprise a
  • bit body having a shank, adapted for connection to a drill string, and an internal
  • the bit body carries a
  • Each cutting or
  • cutter assembly comprises a facing table of diamond material, which defines the
  • the drill bit body is formed in the desired shape, and holes or recesses are
  • One type of cutting assembly for an earth-boring rotary bit consists of a
  • substantially planar cutting table bonded or brazed to the supporting surface of a -->-
  • Each cutting assembly comprises a continuous table of
  • PDC polycrystalline diamond
  • thermoly stable polycrystalline diamond such as thermally stable polycrystalline diamond (TSP)
  • a drill bit it is mounted with its front face facing in the direction of movement and
  • cutting assembly provides a degree of self-sharpening to the cutting assembly.
  • bit body may be steel or carbide
  • the TSP diamond material is embedded
  • TSP cutters are especially prone to shear-related failure. As a result, TSP
  • diamond drill bits are used to drill less than 1% of petroleum and geothermal well
  • FIG. 1 is a perspective view of an earth-boring bit showing continuous
  • FIG. 2 is a side view of the earth-boring bit of FIG. 1 showing
  • FIG. 3 is a bottom or end-on view of the earth-boring bit of FIG. 1
  • FIG. 4a is a sectional view taken normal to the surface of the earth-
  • boring bit of FIG. 2 substantially in the plane of line 4-4 on FIG. 3 and through
  • FIG. 4b is a sectional view similar to FIG. 4a taken normal to the surface
  • FIG. 4c is a sectional view similar to FIG. 4a taken normal to the surface
  • FIGS. 5a, 5c, 5e and 5g are fragmentary, perspective section views
  • FIGS. 5b, 5d, 5f and 5h are fragmentary, front views corresponding to
  • FIGS. 5a through 5d showing the progressive wear of continuous self-
  • FIG. 6 is a front-face view of an oblong cutting assembly according to
  • FIG. 7 is an enlarged cross-sectional view through the center of a
  • FIG. 8 is an enlarged cross-sectional view through the center of a
  • FIG. 9 is an enlarged cross-sectional view through the center of a
  • FIG. 10 is an enlarged cross-sectional view through the center of a
  • the drill bit 10 comprises a tubular body 11 which is adapted to be
  • the surface of the drill bit 10 is provided with a
  • FIG. 4a One such recess 12 is shown in FIG. 4a. As will be seen from the bottom plan view in FIG. 3, the sockets or recesses 12, and the cutting assemblies 13 which are
  • positioned therein may be arranged in substantially a circular pattern.
  • the invention is adaptable for use in a wide variety of drill bit geometries and,
  • sockets or recesses 12 are shown in more detail with various cutting assemblies 13
  • the drill bit is rotated by a drill string (not shown).
  • the diamond surfaced cutting assemblies 13 cut into the rock or other earth
  • drilling fluid e.g., drilling mud
  • diamond faced cutters 14 will be positioned with the cutting surfaces 15 facing the
  • a plurality of such cutter assemblies 13 are mounted in the body 1 1 of a
  • the bit body 1 1 is formed over the
  • each socket 12 is the substrate or stud 17 of a cutter assembly 13.
  • the cutter assembly 13 is usually shrink-fitted or brazed into it socket 12.
  • FIGS. 1, 2 and 3 and more significantly in other Figures is a cutter assembly 13
  • a PDC or TSP cutting table 21 in the form of a short hollow cylinder
  • the cutter assembly 13 can be formed by a variety of methods,
  • the techniques for forming the cutter assembly are
  • each cutting assembly 13 comprises a cutting table 21 mounted on a carrier in the form of a stud 22 which is
  • Each cutting assembly 13 is in
  • cross-section comprising a facing table 21 of, for example, PDC or TSP diamond
  • a cutting table 21 is generally defined by
  • embodiment of the cutting table 21 comprises a closed-loop or cylinder
  • the cutting table 21 is also defined in terms of an inner diameter IB and an outer
  • the cutting table may be oval or triangular or chisel-shaped in cross-
  • the cutting table void may, for example, be oval or any other
  • the void may also be disposed asymmetrically in the cutting table (i.e., extending close to the outer edge of the table) without departing from the
  • the cutting table geometry may be altered to suit
  • the cutting table may be
  • substantially planar includes
  • assembly generally comprises a partially hollow cylinder of circular ovoid cross-
  • the stud 22 is generally
  • bit end 41 defined by a bit end 41, an attachment end 42 and an outer surface 43.
  • attachment end of 42 of the stud 22 may have the geometry of a plug dimensioned to partially or completely
  • the recesses 12 are oriented so that when the cutting assemblies are
  • the diamond cutting tables will be positioned with the
  • cutting assemblies 13 can be used in any type of recess or socket which will hold
  • two part assembly i.e., a cutting table and a stud
  • it may comprise a unitary
  • the bit can be manufactured or fabricated such
  • the stud 22 of the cutting assembly is formed of a hard metal such as
  • cemented tungsten carbide or similar material having high hardness and abrasion-
  • tungsten or molybdenum metal or some other softer refractory material may be used or included with the tungsten carbide.
  • the attachment end of the stud may
  • FIG. 4b of this invention, the rear surface 32 of the cutting table 21 is flat and
  • cutting table is not planar as in FIG. 7 but, rather, contains a plug 50 designed to
  • the plug and cavity provide an interference fit.
  • the plug 50 is a continuous part of the plug 50
  • the shape of the plug 50 is
  • the outer diameter of the plug must be greater than the
  • the plug 50 and corresponding cavity 51 may be of any material.
  • the side surface(s) of the plug may be perpendicular to the rear surface of the cutting table, as in FIG. 9, or may be
  • the plug embodiment is brazed or otherwise
  • cutting table is TSP diamond and the stud is tungsten carbide, the tungsten carbide
  • the stud 22 is hollow
  • void 36 of the cutting table may be filled with an abrasive material if desired in
  • the material may
  • this cutter type may be better suited to
  • cutting table is typically between about 3 mm and about 40 mm in diameter and
  • the face of the stud 22 may be inclined relative to the longitudinal axis of the stud
  • the cutting table 21 is bonded
  • the cutting table 21 of the preferred embodiment has a thickness of
  • the cutting table 21 has an inner
  • the void or hole in the cutting table can vary in size and
  • the voids or holes may improve
  • invention may be constructed in the desired shape originally or may be cut to
  • cutting table 21 is formed of PDC or TSP diamond. As stated before, upon installation of the cutting assembly by interference fit in the bit recess 12, one of
  • the cutting table surfaces, the front surface, will define a gage surface
  • gage and heel surfaces converge at a right angle to define a
  • the cutting table may be formed of a different
  • the cutting table is formed of a PDC or TSP material having a
  • the drill bit In operation, the drill bit is rotated by a drill string.
  • drilling mud which flows through the drill string and the drill bit and subsequently ejected. As the cutting assembly 13 abrades and cuts the drilled
  • the cutting table 21 begins to wear away, thus forming a single wear-
  • the width of the wear-flat i.e., the distance between the points
  • the thickness of the table as measured from the wear-flat to the
  • the cutting assembly of the present invention is continuously self- sharpening (CSS) and the drilling life of the cutting assembly is thereby
  • continuous self-sharpening is meant a process
  • edges is itself self-sharpening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un ensemble de coupe à auto-aiguisage continu (13) servant dans un puits de pétrole ou un système de forage analogue. L'ensemble de coupe (13) comporte une table de coupe (21) constituée, de préférence, d'un matériau en diamant polycristallin ou en diamant polycristallin thermiquement stable, ainsi qu'un goujon de support (22) pouvant être formé en carbure de tungstène. La table de coupe (21) et le goujon (22) sont pourvus de cavités ou orifices alignés ou d'alignement (36, 60). Lors de l'utilisation, la table de coupe (21) et le goujon (22) s'usent, mais les cavités (36, 60) assurent une action d'auto-aiguisage continu.
PCT/US1998/025446 1997-12-02 1998-12-01 Ensemble de coupe a auto-aiguisage continu servant dans des systemes de forage Ceased WO1999028589A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16154/99A AU1615499A (en) 1997-12-02 1998-12-01 Continuous self-sharpening cutting assembly for use with drilling systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6713697P 1997-12-02 1997-12-02
US60/067,136 1997-12-02

Publications (1)

Publication Number Publication Date
WO1999028589A1 true WO1999028589A1 (fr) 1999-06-10

Family

ID=22073947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/025446 Ceased WO1999028589A1 (fr) 1997-12-02 1998-12-01 Ensemble de coupe a auto-aiguisage continu servant dans des systemes de forage

Country Status (2)

Country Link
AU (1) AU1615499A (fr)
WO (1) WO1999028589A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8261858B1 (en) 2011-09-02 2012-09-11 Halliburton Energy Services, Inc. Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
WO2012170970A3 (fr) * 2011-06-10 2013-02-07 Halliburton Energy Services, Inc. Élément contenant une matière de diamant polycristallin thermiquement stable et procédés et ensembles pour sa formation
US8821603B2 (en) 2007-03-08 2014-09-02 Kennametal Inc. Hard compact and method for making the same
CN112227959A (zh) * 2020-10-09 2021-01-15 江苏刘一刀精密机械有限公司 一种带有自润滑保护功能的钻头

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529048A (en) * 1982-10-06 1985-07-16 Megadiamond Industries, Inc. Inserts having two components anchored together at a non-perpendicular angle of attachment for use in rotary type drag bits
US5449048A (en) * 1992-12-23 1995-09-12 Baroid Technology, Inc. Drill bit having chip breaker polycrystalline diamond compact and hard metal insert at gauge surface
US5492188A (en) * 1994-06-17 1996-02-20 Baker Hughes Incorporated Stress-reduced superhard cutting element
US5706906A (en) * 1996-02-15 1998-01-13 Baker Hughes Incorporated Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529048A (en) * 1982-10-06 1985-07-16 Megadiamond Industries, Inc. Inserts having two components anchored together at a non-perpendicular angle of attachment for use in rotary type drag bits
US5449048A (en) * 1992-12-23 1995-09-12 Baroid Technology, Inc. Drill bit having chip breaker polycrystalline diamond compact and hard metal insert at gauge surface
US5492188A (en) * 1994-06-17 1996-02-20 Baker Hughes Incorporated Stress-reduced superhard cutting element
US5706906A (en) * 1996-02-15 1998-01-13 Baker Hughes Incorporated Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8821603B2 (en) 2007-03-08 2014-09-02 Kennametal Inc. Hard compact and method for making the same
WO2012170970A3 (fr) * 2011-06-10 2013-02-07 Halliburton Energy Services, Inc. Élément contenant une matière de diamant polycristallin thermiquement stable et procédés et ensembles pour sa formation
CN104185689A (zh) * 2011-06-10 2014-12-03 哈里伯顿能源服务公司 包含热稳定性多晶金刚石材料的元件以及用来形成该元件的方法和组件
AU2012267485B2 (en) * 2011-06-10 2015-11-19 Halliburton Energy Services, Inc. Super abrasive element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
US8261858B1 (en) 2011-09-02 2012-09-11 Halliburton Energy Services, Inc. Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
US8764862B2 (en) 2011-09-02 2014-07-01 Halliburton Energy Services, Inc. Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
US8875814B2 (en) 2011-09-02 2014-11-04 Halliburton Energy Services, Inc. Element containing thermally stable polycrystalline diamond material and methods and assemblies for formation thereof
CN112227959A (zh) * 2020-10-09 2021-01-15 江苏刘一刀精密机械有限公司 一种带有自润滑保护功能的钻头
CN112227959B (zh) * 2020-10-09 2023-09-22 江苏刘一刀精密机械有限公司 一种带有自润滑保护功能的钻头

Also Published As

Publication number Publication date
AU1615499A (en) 1999-06-16

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