WO2013113551A2 - Trépan - Google Patents

Trépan Download PDF

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Publication number
WO2013113551A2
WO2013113551A2 PCT/EP2013/050687 EP2013050687W WO2013113551A2 WO 2013113551 A2 WO2013113551 A2 WO 2013113551A2 EP 2013050687 W EP2013050687 W EP 2013050687W WO 2013113551 A2 WO2013113551 A2 WO 2013113551A2
Authority
WO
WIPO (PCT)
Prior art keywords
drill bit
inserts
insert
bit according
skewed
Prior art date
Application number
PCT/EP2013/050687
Other languages
English (en)
Other versions
WO2013113551A3 (fr
Inventor
Kenneth Monyak
Joseph Fader
Adrienne Schmoll
Dwight Dyer
Original Assignee
Sandvik Intellectual Property Ab
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 Sandvik Intellectual Property Ab filed Critical Sandvik Intellectual Property Ab
Priority to CN201380006115.5A priority Critical patent/CN104066920A/zh
Publication of WO2013113551A2 publication Critical patent/WO2013113551A2/fr
Publication of WO2013113551A3 publication Critical patent/WO2013113551A3/fr

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
    • 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
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • 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
    • 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
    • E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
    • 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
    • E21B10/58—Chisel-type 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • the present disclosure relates to a drill bit and a drilling device including the drill bit.
  • the drill bit includes at least two insert pockets with cutting edges that extend from an inner position offset radially from the rotational axis of the bit to a linear outer cutting edge. More particularly, the disclosure relates to drill bits for boring and drilling in mining and construction.
  • Existing drill bits include either a non-coring substantially continuous curved cutting edge extending from its high entry point beyond the outer gauge-cutting margins or a coring-type rotary drill bit having non-linear type working surfaces.
  • Figure 9 shows a non-coring drill bit with a continuous planar cutting edge extending from its high entry point in both directions to the outer margin.
  • Cutting inserts may be positioned in insert pockets open to opposite sides of the drill bit.
  • a new drill bit was designed having a new blade geometry.
  • the new blade geometry enables the formation of drill bits having the benefit of a superhard material with a geometry that extends the life of the inserts and drill bit.
  • An exemplary drill bit includes a head portion and a connecting portion for attachment to a drilling device.
  • the head portion includes at least two insert pockets each including an insert with cutting edges that extend from an inner position offset radially from the rotational axis of the bit to a linear outer cutting edge.
  • a further exemplary drill bit includes a head portion and a connecting portion for attachment to a drilling device.
  • the head portion includes at least two insert pockets each including an insert with cutting edges that extend from an inner position offset radially from the rotational axis of the bit to a linear outer cutting edge.
  • the inserts have a top surface that is non-planar extending along a linear path.
  • a yet further exemplary drill bit includes a head portion and a connecting portion for attachment to a drilling device.
  • the head portion includes at least two insert pockets each including an insert with cutting edges that extend from an inner position offset radially from the rotational axis of the bit to a linear outer cutting edge.
  • the inserts are raked back with a rake angle of about 1 0 ° to about 30 ° , skewed with a skew angle of about 1 ° to about 20 ° , and leaned with a lean angle of about 10 ° to about 30 °
  • An exemplary drilling device includes a drill bit according to any of the embodiments described above.
  • FIG. 1 shows a perspective view of an exemplary embodiment of a drill bit containing two inserts offset radially from the rotational axis of the bit.
  • FIG. 2 shows a front view of the drill bit illustrated in Fig. 1 .
  • FIG. 3 shows a side view of the drill bit illustrated in Fig. 1 .
  • FIG. 4 shows a top view from the upper side of the drill bit illustrated in Fig. 1 .
  • FIG. 5 shows a perspective view of another exemplary embodiment of a drill bit containing two inserts offset radially from the rotational axis of the bit.
  • FIG. 6 shows a front view of the drill bit illustrated in Fig. 5.
  • FIG. 7 shows a side view of the drill bit illustrated in Fig. 5.
  • FIG. 8 shows a top view from the upper side of the drill bit illustrated in Fig. 5.
  • FIG. 9 illustrates a prior art drill bit containing a continuous cutting edge extending from a leading cutting edge in both directions to the outer margins of the drill bit.
  • FIGS. 1 -4 An exemplary embodiment of a drill bit containing two insert pockets offset radially from the rotational axis of the bit is shown in FIGS. 1 -4.
  • the drill bit is designed to rotate about the rotational axis of the bit.
  • the drill bit 20 includes a head portion 26 and a connecting portion 22 for attachment to a drilling device (not shown).
  • the connecting portion 22 can include a bolt hole 24 or other connecting structure for attachment.
  • the head portion 26 contains at least two insert pockets 28, which contain inserts 30. In further embodiments, the head portion 26 may contain three, four or more insert pockets and respective inserts.
  • the inserts are distributed evenly around an open core. For example, if the head portion contains two inserts, the inserts are approximately 180 ° apart. Similarly, for example, if three inserts, then they are each approximately 120 ° apart, and if four inserts, then they are each approximately 90 ° apart.
  • Each insert 30 includes at least a cutting edge 32, outer cutting edge 34, top surface 36, wear surface 38, inner surface 40, and outer surface 42.
  • the inner surface 40 of each insert 30 faces the open core 44 located at the rotational axis of the drill bit 20.
  • the wear surface 38 and top surface 36 intersect to form the cutting edge 32, and the wear surface 38 and outer surface 42 intersect to form the outer cutting edge 34.
  • the wear surface 38 serves as a chip face for the cutting edge 32, because it faces the direction of the rotation of the drill bit.
  • the inserts 30 are set in insert pockets 28 to form the wear surface.
  • the inserts 30 are polygonal in shape with linear, planar cutting edges 32, 34 and angular corners.
  • the inserts may be set in the insert pockets by chemical or mechanical attachment, including, for example, brazing, using a set screw or clamp, or adhesively bonding using a structural adhesive.
  • the inserts may be formed of a superhard material or of a cemented carbide base with a superhard material fused to the base as a working wear surface.
  • the cemented carbide is preferably tungsten carbide.
  • the superhard material may be diamond, cubic boron nitride, or any other material with similar hardness properties. Exemplary hardness properties for suitable superhard materials have a Knoop hardness number greater than 2000 HK. Specifically, the superhard material may be polycrystalline diamond.
  • the superhard material covers the top surface 36, wear surface 38, outer surface 42, and/or inner surface 40.
  • the top surface 36 of the insert 30 will be the leading entry surface in contact with the rock or other material to be drilled.
  • the outer surface 42 contacts the rock or other material to be drilled by being the outermost surface in contact with the radial extent of the drilled hole.
  • the inner surface 40 will contact and help break up the core of rock or other material to be drilled formed by the gap in the rotational sweep of the top surface 36 of each insert formed by the inserts being offset from the rotational axis.
  • the wear surface 38 functions as the chip face. Therefore, any of the four surfaces may contain a superhard material to extend tool life. Further, in other embodiments, all surfaces of the inserts may be covered with superhard material, which can be beneficial in simplifying the manufacturing steps.
  • other parts of the head portion 26 may also be formed of a similar substrate covered by a superhard material.
  • the insert pockets, especially top surfaces and/or outer surfaces of the insert pockets, may be covered by a superhard material to add strength and wear resistance to the wear surfaces for reasons similar to their use on corresponding surfaces of the inserts. Further, in other embodiments, the entire head portion may be covered by the superhard material.
  • FIGS. 5-8 illustrate another exemplary embodiment of a drill bit 120 similar to the drill bit illustrated in FIGS. 1 -4.
  • the drill bit 120 includes a head portion 126 and a connecting portion 122 for attachment to a drilling device (not shown).
  • the connecting portion 122 can include a bolt hole 124 or other connecting structure for attachment.
  • the head portion 126 contains at least two insert pockets 128, which contain inserts 130.
  • the head portion 126 may also include additional insert pockets and inserts in similar manner as head portion 26 illustrated in FIGS. 1 -4.
  • Each insert 130 contains four linear edges with angular corners including cutting edge 132, outer cutting edge 134, top surface 136, wear surface 138, inner surface 140, and outer surface 142.
  • the top 136, wear 138, inner 140, and outer 142 surfaces each extend substantially along a linear path, but at least the top surface 136 is linear but non-planar.
  • the non-planar surfaces may include a wavy, serrated, notched, or stepped surface. In the embodiment of FIGS. 5-8, the top surface 136 includes a wavy surface.
  • the top surfaces include offset waves, where the waves of a top surface on one insert is 180 ° out of phase with the top surface of the other insert. Similar designs can be applied when more than two insert pockets are included in the head portion. For example, if there are three insert pockets, then the waves of the top surface of each insert and insert pocket is 120 ° out of phase with the other two insert pockets.
  • other surfaces of the insert may be non-planar.
  • the inner surface of the insert may include a non-planar surface to help break out the core produced during the drilling operations.
  • the outer surface of the insert may include a non-planar surface to help score out the hole being drilled.
  • the top, inner, and outer surfaces may include any alternative design including waves, serrations, notches or steps, where the design on each insert is arranged on the respective surface such that the designs are in-line or offset when rotating during drilling operations.
  • the designs are offset so as to evenly distribute the cutting forces across each of the inserts.
  • the rake angle (a, a') is the angle to which the linear path of the top surface of the insert is raked back from being perpendicular to the axial direction of the drill bit.
  • the rake angle is from about 10 ° to about 30 ° .
  • the rake angle is from about 15 ° to about 25 ° .
  • the rake angle is about 20 ° .
  • the skew angle ( ⁇ , ⁇ ') is the angle to which the back surface of the insert connected to the insert pocket is skewed from a radius of the drill bit.
  • the skew angle is the angle to which the two insert pockets are skewed from being parallel to each other.
  • the skew angle would include the angle to which the insert pockets are skewed from being parallel with radii evenly spaced around the drill bit.
  • the skew angle would include the angle to which each insert pocket is skewed from its complementary radius, wherein each complementary radius is 120 ° apart.
  • the skew angle may be positive or negative.
  • a positive skew is in the direction opposite the rotation of the drill bit.
  • a negative skew is in the direction of the rotation of the drill bit.
  • a positive skew brings the cutting edge and wear face closer to the rotational axis of the drill bit, and a negative skew takes the cutting edge and wear face further from the rotational axis of the drill bit.
  • the skew angle is from about -20 ° to about +20 ° .
  • the skew angle is positive. In more specific embodiments, the skew angle is from about +1 ° to about +20 ° . In yet more specific embodiments, the skew angle is from about +5 ° to about +15 ° . In further specific embodiments, the skew angle is from about +5 ° to about +10 ° .
  • the lean angle ( ⁇ , ⁇ ') is the angle to which the wear surface is leaned back from parallel to the axial direction.
  • the lean angle is from about 10 ° to about 30 ° . In specific embodiments, the lean angle is from about 15 ° to about 25 ° . In more specific embodiments, the lean angle is from about 18 to about 22 ° . In yet a more specific embodiment, the lean angle is about 20 ° . [0038] Because the insert pockets are offset with certain rake, skew, and lean angles, the inserts are positioned a certain distance from each other. This distance between the inserts adjacent the top surfaces can be from about 25% to about 75% of the total diameter of the drill bit. In certain embodiments, the distance is from about 25% to about 60%. In further embodiments, the distance is from about 25% to about 40%. In yet further embodiments, the distance is from about 30% to about 35%.
  • the distance between the inserts often times can be shorter when measured at the portion of the head portion closest to the connecting portion of the drill bit.
  • the distance between the inserts at the portion of the head portion closest to the connection portion can be from about 2% to about 30%. In certain embodiments, the distance is from about 5% to about 20%. In further embodiments, the distance is from about 10% to about 15%. In yet further embodiments, the distance is from about 5% to about 10%.

Landscapes

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

Abstract

La présente invention porte sur un trépan qui comprend une partie tête et une partie couplage pour le fixer à un dispositif de forage. La partie tête comprend au moins deux cavités à éléments rapportés qui peuvent contenir des éléments rapportés, avec des bords coupants qui s'étendent depuis un emplacement intérieur radialement décalé de l'axe de rotation du trépan par rapport à un bord coupant extérieur. Le bord coupant est formé par l'intersection d'une surface supérieure et d'une surface d'usure de la cavité à élément rapporté ou de l'élément rapporté. La surface supérieure est linéaire, mais peut être plane ou non plane.
PCT/EP2013/050687 2012-01-30 2013-01-16 Trépan WO2013113551A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380006115.5A CN104066920A (zh) 2012-01-30 2013-01-16 钻头

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261592215P 2012-01-30 2012-01-30
US61/592,215 2012-01-30

Publications (2)

Publication Number Publication Date
WO2013113551A2 true WO2013113551A2 (fr) 2013-08-08
WO2013113551A3 WO2013113551A3 (fr) 2014-06-12

Family

ID=47603643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050687 WO2013113551A2 (fr) 2012-01-30 2013-01-16 Trépan

Country Status (3)

Country Link
US (1) US20130192902A1 (fr)
CN (1) CN104066920A (fr)
WO (1) WO2013113551A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561084B (zh) * 2018-04-20 2024-04-02 德清爱得机械有限公司 一种旋挖机刀座
US10577870B2 (en) * 2018-07-27 2020-03-03 Baker Hughes, A Ge Company, Llc Cutting elements configured to reduce impact damage related tools and methods—alternate configurations
US11008814B2 (en) * 2018-11-12 2021-05-18 Ulterra Drilling Technologies, Lp Drill bit
CN110548902B (zh) * 2019-06-26 2024-06-14 承德石油高等专科学校 机夹钻头
USD1009105S1 (en) * 2021-09-08 2023-12-26 Apex Brands, Inc. Tri-paddle bit
USD1012131S1 (en) 2022-03-03 2024-01-23 Kennametal Inc. Roof bit

Citations (8)

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Publication number Priority date Publication date Assignee Title
US4984642A (en) * 1989-05-17 1991-01-15 Societe Industrielle De Combustible Nucleaire Composite tool comprising a polycrystalline diamond active part
WO1992020897A1 (fr) * 1991-05-23 1992-11-26 Brady William J Outils rotatifs pour exploitation miniere
US5429199A (en) * 1992-08-26 1995-07-04 Kennametal Inc. Cutting bit and cutting insert
US5467837A (en) * 1993-09-01 1995-11-21 Kennametal Inc. Rotary drill bit having an insert with leading and trailing relief portions
WO1999004129A1 (fr) * 1997-07-15 1999-01-28 Kennametal Inc. Ensemble trepan tranchant rotatif a ensemble de maintien a verrouillage par coin
US5979578A (en) * 1997-06-05 1999-11-09 Smith International, Inc. Multi-layer, multi-grade multiple cutting surface PDC cutter
US6374932B1 (en) * 2000-04-06 2002-04-23 William J. Brady Heat management drilling system and method
US20110284294A1 (en) * 2009-03-09 2011-11-24 Us Synthetic Corporation Rotational drill bits and drilling apparatuses including the same

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Publication number Priority date Publication date Assignee Title
US4352400A (en) * 1980-12-01 1982-10-05 Christensen, Inc. Drill bit
US4550791A (en) * 1983-10-03 1985-11-05 Kennametal Inc. Two-prong rotary bit, especially for use with roof drills, and insert therefor
US7228922B1 (en) * 2004-06-08 2007-06-12 Devall Donald L Drill bit
US7513319B2 (en) * 2004-06-08 2009-04-07 Devall Donald L Reamer bit
US8807884B2 (en) * 2009-12-18 2014-08-19 Kennametal Inc. Tool holder for multiple differently-shaped cutting inserts
US8584777B2 (en) * 2010-06-04 2013-11-19 Dover Bmcs Acquisition Corporation Rotational drill bits and drilling apparatuses including the same
US8899356B2 (en) * 2010-12-28 2014-12-02 Dover Bmcs Acquisition Corporation Drill bits, cutting elements for drill bits, and drilling apparatuses including the same
USD682325S1 (en) * 2012-01-30 2013-05-14 Sandvik Intellectual Property Ab Drill bit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984642A (en) * 1989-05-17 1991-01-15 Societe Industrielle De Combustible Nucleaire Composite tool comprising a polycrystalline diamond active part
WO1992020897A1 (fr) * 1991-05-23 1992-11-26 Brady William J Outils rotatifs pour exploitation miniere
US5429199A (en) * 1992-08-26 1995-07-04 Kennametal Inc. Cutting bit and cutting insert
US5467837A (en) * 1993-09-01 1995-11-21 Kennametal Inc. Rotary drill bit having an insert with leading and trailing relief portions
US5979578A (en) * 1997-06-05 1999-11-09 Smith International, Inc. Multi-layer, multi-grade multiple cutting surface PDC cutter
WO1999004129A1 (fr) * 1997-07-15 1999-01-28 Kennametal Inc. Ensemble trepan tranchant rotatif a ensemble de maintien a verrouillage par coin
US6374932B1 (en) * 2000-04-06 2002-04-23 William J. Brady Heat management drilling system and method
US20110284294A1 (en) * 2009-03-09 2011-11-24 Us Synthetic Corporation Rotational drill bits and drilling apparatuses including the same

Also Published As

Publication number Publication date
CN104066920A (zh) 2014-09-24
US20130192902A1 (en) 2013-08-01
WO2013113551A3 (fr) 2014-06-12

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