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    POLYCRYSTALLINE TABLES,POLYCRYSTALLINE ELEMENTS,AND RELATED METHODS
    82.
    发明专利
    POLYCRYSTALLINE TABLES,POLYCRYSTALLINE ELEMENTS,AND RELATED METHODS 未知

    公开(公告)号：ZA201306587B

    公开(公告)日：2014-06-25

    申请号：ZA201306587

    申请日：2013-09-02

    Applicant: BAKER HUGHES INC

    Inventor： LYONS NICHOLAS J ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  NELMS DEREK L

    IPC: C22C20060101 ,  B24D20060101 ,  E21B20060101

    Abstract: Polycrystalline elements comprise a substrate and a polycrystalline table attached to an end of the substrate. The polycrystalline table comprises a first region of superabrasive material having a first permeability and at least a second region of superabrasive material having a second, lesser permeability, the at least second region being interposed between the substrate and the first region. Methods of forming a polycrystalline element comprise attaching a polycrystalline table comprising a first region of superabrasive material having a first permeability and at least a second region of superabrasive material having a second, lesser permeability to an end of a substrate, the at least a second region being interposed between the first region and the substrate. Catalyst material is removed from at least the first region of the polycrystalline table.

    SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS
    88.
    发明专利
    SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS 未知

    公开(公告)号：CA2864187A1

    公开(公告)日：2013-08-15

    申请号：CA2864187

    申请日：2013-02-08

    Applicant: BAKER HUGHES INC

    Inventor： BILEN JUAN MIGUEL ,  SCOTT DANNY E ,  PATEL SURESH G ,  MATTHEWS OLIVER ,  NELMS DEREK L ,  LYONS NICHOLAS J

    IPC: E21B10/43 ,  E21B10/42 ,  E21B10/62

    Abstract: Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools.

    SHAPE CUTTING ELEMENTS ON DRILL BITS AND OTHER EARTH-BORING TOLLS, AND METHODS OF FORMING SAME
    89.
    发明专利
    SHAPE CUTTING ELEMENTS ON DRILL BITS AND OTHER EARTH-BORING TOLLS, AND METHODS OF FORMING SAME 未知

    公开(公告)号：ZA201205714B

    公开(公告)日：2013-05-29

    申请号：ZA201205714

    申请日：2012-07-27

    Applicant: BAKER HUGHES INC

    Inventor： LYONS NICHOLAS J ,  PESSIER RUDOLF CARL ,  BILEN JUAN MIGUEL ,  SCOTT DANNY E ,  GAVIA DAVID

    IPC: E21B20060101

    Abstract: Earth-boring tools include a body, one or more blades projecting outwardly from the body, and cutting elements carried by the blade. The cutting elements include at least one shearing cutting element and at least one gouging cutting element. Methods of forming an earth-boring tool include mounting a shearing cutting element comprising an at least substantially planar cutting face to a body of an earth-boring tool, and mounting a gouging cutting element comprising a non-planar cutting face to the body of the earth-boring tool. The gouging cutting element may be positioned on the body of the earth-boring tool such that the gouging cutting element will gouge formation material within a kerf cut in the formation material by the shearing cutting element, or between kerfs cut in the formation material by a plurality of shearing cutting elements.

    POLYCRYSTALLINE COMPACTS HAVING DIFFERING REGIONS THEREIN, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS
    90.
    发明专利
    POLYCRYSTALLINE COMPACTS HAVING DIFFERING REGIONS THEREIN, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS 未知

    公开(公告)号：CA2824981A1

    公开(公告)日：2012-07-26

    申请号：CA2824981

    申请日：2012-01-04

    Applicant: BAKER HUGHES INC

    Inventor： SCOTT DANNY E ,  DIGIOVANNI ANTHONY A

    IPC: E21B10/567 ,  B22F7/06 ,  E21B10/42 ,  E21B10/54

    Abstract: Polycrystalline compacts include a hard polycrystalline material comprising first and second regions. The first region comprises a first plurality of grains of hard material having a first average grain size, and a second plurality of grains of hard material having a second average grain size smaller than the first average grain size. The first region comprises catalyst material disposed in interstitial spaces between inter-bonded grains of hard material. Such interstitial spaces between grains of the hard material in the second region are at least substantially free of catalyst material. In some embodiments, the first region comprises a plurality of nanograins of the hard material. Cutting elements and earth-boring tools include such polycrystalline compacts. Methods of forming such polycrystalline compacts include removing catalyst material from interstitial spaces within a second region of a polycrystalline compact without entirely removing catalyst material from interstitial spaces within a first region of the compact.

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