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    • 4. 发明申请
    • CUTTING ELEMENT FOR SUBTERRANEAN DRILLING
    • 用于地下钻探的切削元件
    • WO2008157110A3
    • 2009-04-02
    • PCT/US2008066300
    • 2008-06-09
    • BAKER HUGHES INCSCOTT DAN E
    • SCOTT DAN E
    • E21B10/567
    • E21B10/567B22F7/062B22F2005/001B22F2005/002C22C26/00
    • A drill bit (100) or milling tool includes a bit body on which a plurality of cutting elements (116) are disposed. At least some of the plurality of cutting elements include a diamond table and a superabrasive material non-reactive with iron-based materials disposed over at least a portion of an exterior surface of the diamond table. The diamond table is suitable for drilling through a subterranean formation and the non-reactive superabrasive material is suitable for drilling through a casing or casing-associated component comprising an iron-based material and disposed within the subterranean formation. The diamond table may comprise a PDC and the non-reactive superabrasive material may comprise cubic boron nitride.
    • 钻头(100)或铣削工具包括其上设置有多个切削元件(116)的钻头本体。 多个切割元件中的至少一些包括金刚石台和与设置在金刚石台的外表面的至少一部分上的铁基材料不反应的超级磨料材料。 该金刚石台适用于钻穿地下地层,并且该非反应性超级研磨材料适合于穿过包括铁基材料并设置在地下地层内的套管或套管相关部件进行钻探。 金刚石台可以包括PDC,并且非反应性超级研磨材料可以包括立方氮化硼。
    • 5. 发明申请
    • IMPREGNATED BIT WITH INCREASED BINDER PERCENTAGE
    • 增加了BINDER百分比
    • WO2010123906A3
    • 2011-03-03
    • PCT/US2010031759
    • 2010-04-20
    • BAKER HUGHES INCSCOTT DAN E
    • SCOTT DAN E
    • E21B10/46B22F7/06C22C29/08
    • E21B10/54
    • Control of the carbide volume in the matrix in an impregnated bit is accomplished by coating the hard particles in the matrix to space them further apart to increase the soft binder percentage in a controllable manner. The softer binder due to lower volume content of hard particles allows more rapid matrix wear in the softer formations to allow more diamond grit to cut better before getting flat spots and to be replaced faster with additional diamond grit further into the matrix as the higher content of the softer binder and the softer coating on the hard particles in the matrix promotes more effective cutting with more frequent emergence of diamond grit on the bit face as cutting progresses.
    • 通过将基质中的硬质颗粒涂覆在基质中来控制基体中的碳化物体积,使它们进一步分开,以可控的方式增加软粘合剂的百分比。 由于较硬的颗粒体积含量,较软的粘合剂使得较软地层中的基体更容易磨损,从而允许更多的金刚石砂粒在得到平坦点之前更好地切割,并且在进一步加入到基质中的另外的金刚石砂粒中更快地被更换,因为更高的含量 在切割过程中,较软的粘结剂和基体上的硬质颗粒上较软的涂层促进了更有效的切割,更频繁地在钻头上出现金刚石砂粒。
    • 7. 发明申请
    • CHAMFERED EDGE GAGE CUTTERS, DRILL BITS SO EQUIPPED, AND METHODS OF CUTTER MANUFACTURE
    • 切割边缘切割机,这样的钻头和切割机的制造方法
    • WO2009029649A3
    • 2010-05-20
    • PCT/US2008074433
    • 2008-08-27
    • BAKER HUGHES INCPATEL SURESH GSCOTT DAN ESINOR ALLEN
    • PATEL SURESH GSCOTT DAN ESINOR ALLEN
    • E21B10/567
    • E21B10/5673
    • A cutting element (30) for an earth boring bit, wherein the PDC layer (39) of the cutting element has a flat (36) on a periphery thereof terminating longitudinally at en edge spaced from of the cutting face of the PDC layer. A chamfer (34) adjacent the cutting face desirably has a length that exceeds its depth. Embodiments include a chamfer along the entire circumference of the cutting element, multiple step-wise, radially adjacent chamfers, and multiple circumferentially spaced portions of the uppermost radius of the PDC layer of the cutting element that each includes a chamfer with an associated flat. An embodiment including a flat terminating at a radial edge with the cutting face of a PDC layer is also disclosed, as are drill bits incorporating embodiments of the cutting elements of the invention and a method of forming the cutting elements.
    • 一种用于钻地钻头的切割元件(30),其中切割元件的PDC层(39)在其周边上具有在与PDC层的切割面间隔开的边缘处纵向延伸的平坦(36)。 与切割面相邻的倒角(34)优选具有超过其深度的长度。 实施例包括沿着切割元件的整个圆周的倒角,多个逐步的,径向相邻的倒角,以及切割元件的PDC层的最上半径的多个周向间隔的部分,每个包括具有相关平面的倒角。 还公开了一种包括具有PDC层的切割面的径向边缘处的平坦的实施例,以及结合本发明的切割元件的实施例的钻头以及形成切割元件的方法。