EARTH-BORING TOOLS AND METHODS OF FORMING SUCH EARTH-BORING TOOLS
    3.
    发明公开
    EARTH-BORING TOOLS AND METHODS OF FORMING SUCH EARTH-BORING TOOLS 审中-公开
    地钻工具和形成这种地钻工具的方法

    公开(公告)号:EP2705208A2

    公开(公告)日:2014-03-12

    申请号:EP12779637.3

    申请日:2012-04-20

    IPC分类号: E21B10/43 E21B10/567

    摘要: Earth-boring drill bits comprise a bit body having a plurality of radially extending blades and a plurality of cutting elements attached to the plurality of radially extending blades. Only gouging cutting elements are attached to at least one blade of the plurality of radially extending blades. Only shearing cutting elements are attached to at least another blade of the plurality of radially extending blades. Only shearing cutting elements are attached to a number of blades of the plurality of radially extending blades that is different from a number of blades of the plurality of radially extending blades to which only gouging cutting elements are attached. Methods of forming an earth-boring drill bit comprise forming a bit body including a plurality of radially extending blades. Only shearing cutting elements are attached to a number of blades different from a number of blades to which only gouging cutting elements are attached.

    摘要翻译: 钻地钻头包括具有多个径向延伸叶片和附接到多个径向延伸叶片的多个切割元件的钻头本体。 只有刨削切割元件附接到多个径向延伸叶片中的至少一个叶片。 只有剪切切割元件连接到多个径向延伸叶片中的至少另一个叶片上。 只有剪切切割元件连接到多个径向延伸叶片中的多个叶片,这些叶片不同于多个径向延伸叶片中的仅有气刨切割元件附接到的多个叶片。 形成钻地钻头的方法包括形成包括多个径向延伸叶片的钻头本体。 只有剪切切割元件连接到许多不同于仅连接有气刨切割元件的叶片的叶片上。

    EARTH-BORING TOOLS HAVING CUTTING ELEMENTS WITH CUTTING FACES EXHIBITING MULTIPLE COEFFICIENTS OF FRICTION, AND RELATED METHODS
    4.
    发明公开
    EARTH-BORING TOOLS HAVING CUTTING ELEMENTS WITH CUTTING FACES EXHIBITING MULTIPLE COEFFICIENTS OF FRICTION, AND RELATED METHODS 有权
    与切割元件与切割面具有多摩擦系数和相关方法ERDBOHRWERKZEUG

    公开(公告)号:EP2844819A1

    公开(公告)日:2015-03-11

    申请号:EP13785153.1

    申请日:2013-05-01

    IPC分类号: E21B10/46

    摘要: An earth-boring tool having at least one cutting element with a multi-friction cutting face provides for the steering of formation cuttings as the cuttings slide across the cutting face. The multi-friction cutting element includes a diamond table bonded to a substrate of superabrasive material. The diamond table has a cutting face formed thereon with a cutting edge extending along a periphery of the cutting face. The cutting face has a first area having an average surface finish roughness less than an average surface finish roughness of a second area of the cutting face, the two areas separated by a boundary having a proximal end proximate a tool crown and a distal end remote from the tool crown.

    摘要翻译: 具有与多摩擦切削面的至少一个切割元件的钻地工具提供用于地层钻屑的转向为钻屑越过切削面滑动。 多摩擦切割元件包括结合到超级磨料材料的基板的金刚石台面。 金刚石台具有带切削刃沿切削面的外周延伸形成在其上的切削面。 切削面具有平均表面光洁度粗糙面的第一面积小于在所述切削面的第二区域的平均表面光洁度粗糙度,由具有近端的边界分开的两个区域邻近的工具冠部和从远端远程 该工具冠。

    SHAPED CUTTING ELEMENTS ON DRILL BITS AND OTHER EARTH-BORING TOOLS, AND METHODS OF FORMING SAME
    6.
    发明公开
    SHAPED CUTTING ELEMENTS ON DRILL BITS AND OTHER EARTH-BORING TOOLS, AND METHODS OF FORMING SAME 审中-公开
    形的切割元素对钻头等钻地工具及其形成方法

    公开(公告)号:EP2531690A2

    公开(公告)日:2012-12-12

    申请号:EP11740494.7

    申请日:2011-02-07

    IPC分类号: E21B10/54 E21B10/62 E21B10/56

    CPC分类号: E21B10/5673 E21B10/43

    摘要: 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.

    摘要翻译: 钻地工具包括主体,一个或多个叶片从所述本体向外突出,并通过切割刀片携带元件。 切割元件包括至少一个剪切切割元件和至少一个气刨切削元件。 钻地工具的形成的方法包括安装一个剪切切割元件包括至少基本平坦的切割面的至钻地工具的主体,和安装一个气刨切削元件的非平面切削面包括向的身体 钻地工具。 刨削切割元件可以在钻地工具搜索的主体中定位,DASS模具刨切割元件将挖出在由剪切切割元件的信息材料的切口内切信息材料,或者通过在信息材料切割切口之间 剪切切割元件的多个。

    ANTI-TRACKING FEATURE FOR ROCK BITS
    8.
    发明公开
    ANTI-TRACKING FEATURE FOR ROCK BITS 审中-公开
    反跟踪功能对于凿岩机

    公开(公告)号:EP2297423A2

    公开(公告)日:2011-03-23

    申请号:EP09735461.7

    申请日:2009-04-21

    IPC分类号: E21B10/16 E21B10/43

    CPC分类号: E21B10/16

    摘要: The harmful effects of tracking are reduced for a drill bit having roller cones (29) with at least one of the outermost rows (51) of active teeth (35) containing one or more teeth (35) having a height (65) that does not extend to the height (67) of at least one of the outermost rows on another roller cone on the bit. The crest (63) on this tooth (35) may have a length (58) in a circumferential direction that is wider than an overall width (69) of the tooth (35) in the outer to inner direction. The invention may be used on any cutter row, not just the outermost row (51). The design may be used on a different roller cone or row, or more than one cutter row. The anti-tracking feature may be located between the leading and trailing edges (201) of the tooth (201) on one or more roller cones.