Impregnated bit with PDC cutters in cone area
    1.
    发明授权
    Impregnated bit with PDC cutters in cone area 有权
    浸渍钻头与锥形区域的PDC切割机

    公开(公告)号:US06510906B1

    公开(公告)日:2003-01-28

    申请号:US09709999

    申请日:2000-11-10

    IPC分类号: E21B1046

    摘要: A drill bit employing a plurality of discrete, post-like diamond grit impregnated cutting structures extending upwardly from abrasive particulate-impregnated blades defining a plurality of fluid passages therebetween on the bit face. PDC cutters with faces oriented in the general direction of bit rotation are placed in the cone of the bit, which is relatively shallow, to promote enhanced drilling efficiency through softer, non-abrasive formations. A plurality of ports, configured to receive nozzles therein are employed for improved drilling fluid flow and distribution. The blades may extend radially in a linear fashion, or be curved and spiral outwardly to the gage to provide increased blade length and enhanced cutting structure redundancy.

    摘要翻译: 钻头采用多个离散的柱状金刚石砂粒浸渍的切割结构,其从在钻头面上限定多个流体通道的磨料颗粒浸渍刀片向上延伸。 位于钻头旋转大体方向的PDC刀具被放置在比较浅的钻头的锥体中,以通过较软的非磨蚀性地层提高钻井效率。 被配置为在其中接收喷嘴的多个端口用于改善钻井液流动和分布。 叶片可以以线性方式径向延伸,或者弯曲并向外螺旋到量规,以提供增加的叶片长度和增强的切割结构冗余度。

    Impregnated rotary drag bit
    3.
    发明授权
    Impregnated rotary drag bit 有权
    浸渍旋转阻力钻头

    公开(公告)号:US06843333B2

    公开(公告)日:2005-01-18

    申请号:US10301359

    申请日:2002-11-20

    摘要: A drill bit employing a plurality of discrete, post-like, abrasive, particulate-impregnated cutting structures extending upwardly from abrasive, particulate-impregnated blades defining a plurality of fluid passages therebetween on the bit face. Additional cutting elements may be placed in the cone of the bit surrounding the centerline thereof. The blades may extend radially in a linear fashion, or be curved and spiral outwardly to the gage to provide increased blade length and enhanced cutting structure redundancy. Additionally, discrete protrusions may extend outwardly from at least some of the plurality of cutting structures. The discrete protrusions may be formed of a thermally stable diamond product and may exhibit a generally triangular cross-sectional geometry relative to the direction of intended bit rotation.

    摘要翻译: 一种钻头,其采用多个离散的,类似后的,磨料的,颗粒浸渍的切割结构,其从在钻头面上限定多个流体通道的磨粒,颗粒浸渍的刀片向上延伸。 另外的切割元件可以放置在围绕其中心线的钻头的锥体中。 叶片可以以线性方式径向延伸,或者弯曲并向外螺旋到量规,以提供增加的叶片长度和增强的切割结构冗余度。 此外,离散的突起可以从多个切割结构中的至少一些切割结构向外延伸。 分立的突起可以由热稳定的金刚石产品形成,并且可以相对于预期钻头旋转的方向呈现大致三角形的横截面几何形状。