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    Hybrid drill bit with secondary backup cutters positioned with high side rake angles
    2.
    发明授权
    Hybrid drill bit with secondary backup cutters positioned with high side rake angles 有权
    混合钻头与二次备用切割机定位，具有高侧前角

    公开(公告)号：US08047307B2

    公开(公告)日：2011-11-01

    申请号：US12340299

    申请日：2008-12-19

    申请人： Rudolf Carl Pessier ,  Michael S. Damschen

    发明人： Rudolf Carl Pessier ,  Michael S. Damschen

    IPC分类号： E21B10/00 ,  E21B10/43

    CPC分类号： E21B10/14 ,  E21B10/43

    摘要： A hybrid drill bit may have a bit body, at least one blade extending longitudinally and radially outward from the face, at least one rolling cutter assembly mounted on the bit body, at least one primary cutter, and at least one cutter set including a first cutter and a second cutter. The cutter set may be positioned to substantially follow the at least one primary cutter along the cutting path upon rotation of the bit body. At least one cutter of the cutter set may have a high side rake angle.

    摘要翻译： 混合钻头可以具有钻头体，从表面纵向和径向向外延伸的至少一个叶片，安装在钻头体上的至少一个滚切刀组件，至少一个主切割器和至少一个切割器组，其包括第一 切割器和第二切割器。 切割器组可以被定位成在钻头体旋转时沿着切割路径基本上跟随至少一个主切割器。 切割器组的至少一个切割器可以具有高的侧倾角。

    HYBRID DRILL BIT
    5.
    发明申请
    HYBRID DRILL BIT 有权
    混合钻头

    公开(公告)号：US20100288561A1

    公开(公告)日：2010-11-18

    申请号：US12465377

    申请日：2009-05-13

    申请人： Anton F. Zahradnik ,  Ron D. McCormick ,  Rudolf C. Pessier ,  Jack T. Oldham ,  Michael S. Damschen ,  Don Q. Nguyen ,  Matt Meiners ,  Karlos B. Cepeda ,  Mark P. Blackman

    发明人： Anton F. Zahradnik ,  Ron D. McCormick ,  Rudolf C. Pessier ,  Jack T. Oldham ,  Michael S. Damschen ,  Don Q. Nguyen ,  Matt Meiners ,  Karlos B. Cepeda ,  Mark P. Blackman

    IPC分类号： E21B10/14 ,  E21B10/00

    CPC分类号： E21B10/14 ,  E21B10/00

    摘要： A bit body is configured at its upper extent for connection into a drillstring. At least one fixed blade extends downwardly from the bit body, and has a radially outermost gage surface. A plurality of fixed cutting elements is secured to the fixed blade, preferably in a row at its rotationally leading edge. At least one bit leg is secured to the bit body and a rolling cutter is mounted for rotation on the bit leg. At least one stabilizer pad is disposed between the bit leg and the fixed blade, the stabilizer pad extending radially outward to substantially the gage surface. The radially outermost gage surface of each blade can extend axially downward parallel to the bit axis or angled (non-parallel), spirally or helically, relative to the bit axis.

    摘要翻译： 一个位体在其上部配置用于连接到一个钻柱。 至少一个固定刀片从钻头体向下延伸，并具有径向最外面的表面。 多个固定切割元件固定在固定刀片上，优选地在其旋转前缘处成行。 至少一个位腿被固定到钻头体上，并且滚动切割器被安装成用于在钻头腿上旋转。 至少一个稳定器垫设置在钻头腿和固定刀片之间，稳定器垫径向向外延伸到基本上为表面。 每个叶片的径向最外面的表面可以平行于钻头轴线轴向向下延伸，或相对于钻头轴线螺旋状或螺旋状地成角度（非平行）延伸。

    Hybrid drill bit
    6.
    发明授权
    Hybrid drill bit 有权
    混合钻头

    公开(公告)号：US08459378B2

    公开(公告)日：2013-06-11

    申请号：US12465377

    申请日：2009-05-13

    申请人： Anton F. Zahradnik ,  Ron D. McCormick ,  Rudolf C. Pessier ,  Jack T. Oldham ,  Michael S. Damschen ,  Don Q. Nguyen ,  Matt Meiners ,  Karlos B. Cepeda ,  Mark P. Blackman

    发明人： Anton F. Zahradnik ,  Ron D. McCormick ,  Rudolf C. Pessier ,  Jack T. Oldham ,  Michael S. Damschen ,  Don Q. Nguyen ,  Matt Meiners ,  Karlos B. Cepeda ,  Mark P. Blackman

    IPC分类号： E21B10/00

    CPC分类号： E21B10/14 ,  E21B10/00

    摘要： A bit body is configured at its upper extent for connection into a drillstring. At least one fixed blade extends downwardly from the bit body, and has a radially outermost gage surface. A plurality of fixed cutting elements is secured to the fixed blade, preferably in a row at its rotationally leading edge. At least one bit leg is secured to the bit body and a rolling cutter is mounted for rotation on the bit leg. At least one stabilizer pad is disposed between the bit leg and the fixed blade, the stabilizer pad extending radially outward to substantially the gage surface. The radially outermost gage surface of each blade can extend axially downward parallel to the bit axis or angled (non-parallel), spirally or helically, relative to the bit axis.

    摘要翻译： 一个位体在其上部配置用于连接到一个钻柱。 至少一个固定刀片从钻头体向下延伸，并具有径向最外面的表面。 多个固定切割元件固定在固定刀片上，优选地在其旋转前缘处成行。 至少一个位腿被固定到钻头体上，并且滚动切割器被安装成用于在钻头腿上旋转。 至少一个稳定器垫设置在钻头腿和固定刀片之间，稳定器垫径向向外延伸到基本上为表面。 每个叶片的径向最外面的表面可以平行于钻头轴线轴向向下延伸，或相对于钻头轴线螺旋状或螺旋状地成角度（非平行）延伸。

    EARLY WEAR DETECTION
    7.
    发明申请
    EARLY WEAR DETECTION 审中-公开
    早期磨损检测

    公开(公告)号：US20110290560A1

    公开(公告)日：2011-12-01

    申请号：US12791377

    申请日：2010-06-01

    申请人： Robert J. Buske ,  Mark Philip Blackman ,  John F. Bradford ,  Michael S. Damschen ,  Robert D. Bradshaw ,  Rudolf C. Pessier

    发明人： Robert J. Buske ,  Mark Philip Blackman ,  John F. Bradford ,  Michael S. Damschen ,  Robert D. Bradshaw ,  Rudolf C. Pessier

    IPC分类号： E21B12/02

    CPC分类号： E21B12/02 ,  E21B10/14 ,  E21B10/60

    摘要： A drill bit with a bit body having a central bore in communication with a plurality of nozzles for directing drilling fluid; a plurality of cutters defining a cutting face of the bit; and a passageway extending from the central bore toward the cutting face, such that excessive wear of the cutting face opens the passageway to allow the drilling fluid to flow therethrough, thereby reducing a surface pressure of the drilling fluid and indicating excessive wear of the bit. The passageway may extend to adjacent, or within one half inch or three inches of, the cutting face, such that excessive wear opens the passageway to the cutting face. In some cases, the passageway may actually extend through the cutting face with a plug inserted into the passageway at the cutting face to prevent the drilling fluid from exiting the passageway absent wear of the bit.

    摘要翻译： 一种钻头，其具有具有与用于引导钻井液体的多个喷嘴连通的中心孔的钻头; 限定所述钻头的切割面的多个切割器; 以及从中心孔朝向切割面延伸的通道，使得切割面的过度磨损打开通道以允许钻井流体流过其中，从而降低钻井液的表面压力并且指示钻头的过度磨损。 通道可以延伸到切割面的相邻的或半英寸或三英寸以内，使得过度磨损将通道打开到切割面。 在一些情况下，通道实际上可以通过插入到切割面处的通道中的塞子延伸穿过切割面，以防止钻井液离开通道而没有钻头的磨损。

    BEARING BLOCKS FOR DRILL BITS, DRILL BIT ASSEMBLIES INCLUDING BEARING BLOCKS AND RELATED METHODS
    9.
    发明申请
    BEARING BLOCKS FOR DRILL BITS, DRILL BIT ASSEMBLIES INCLUDING BEARING BLOCKS AND RELATED METHODS 审中-公开
    用于钻头，钻头组合的轴承座，包括轴承座及相关方法

    公开(公告)号：US20100276200A1

    公开(公告)日：2010-11-04

    申请号：US12766988

    申请日：2010-04-26

    申请人： Thorsten Schwefe ,  Chad J. Beuershausen ,  Michael S. Damschen

    发明人： Thorsten Schwefe ,  Chad J. Beuershausen ,  Michael S. Damschen

    IPC分类号： E21B10/46 ,  E21B7/00 ,  E21B10/42 ,  E21B10/54 ,  E21B10/55 ,  B21K5/04

    CPC分类号： E21B10/43 ,  E21B10/55

    摘要： Methods of drilling subterranean formations include coupling at least one bearing block having an initial thickness to a drill bit, engaging a formation with the drill bit within an initial depth of cut range, and reducing the initial thickness of the bearing block by contacting the formation to cause the initial depth of cut range to be at least partially increased. Methods of forming drill bits for drilling subterranean formations include forming at least one rubbing surface of at least one bearing block from at least one material exhibiting a reduced coefficient of friction and coupling the at least one bearing block to the drill bit. Drill bit assemblies include at least one bearing block having a distal portion configured to provide an initial depth of cut range and a base portion configured to provide an increased depth of cut range greater than the initial depth of cut range.

    摘要翻译： 钻探地下地层的方法包括将具有初始厚度的至少一个轴承座联接到钻头，在初始切割深度范围内将钻头与钻头接合，并且通过使地层接触而减小轴承座的初始厚度 导致切割范围的初始深度至少部分增加。 形成用于钻探地下地层的钻头的方法包括从至少一种表现出减小的摩擦系数的材料形成至少一个轴承座的至少一个摩擦表面，并将至少一个轴承座联接到钻头。 钻头组件包括至少一个轴承座，其具有构造成提供初始切割深度范围的远侧部分和被配置为提供大于切割范围的初始深度的增加的切割范围的深度的基部。