Drill bit and cutting inserts for hard/abrasive formations
    2.
    发明授权
    Drill bit and cutting inserts for hard/abrasive formations 有权
    钻头和切削刀片用于硬/磨料地层

    公开(公告)号:US07690442B2

    公开(公告)日:2010-04-06

    申请号:US11383584

    申请日:2006-05-16

    IPC分类号: E21B10/16

    CPC分类号: E21B10/16 E21B10/52

    摘要: A rolling cone drill bit comprises a plurality of bottomhole cutter elements positioned in a first circumferential row, wherein at least one of the cutter elements comprises a cutting portion extending from a base portion to a point furthermost from the base portion, defining an extension height. The ratio of the cross-sectional area of the cutter element at a point equal to ninety-four percent of the extension height to the cross-sectional area of the cutter element base is greater than 0.2. Moreover, the ratio of the extension height to the base diameter is not greater than 0.75.

    摘要翻译: 滚动锥钻头包括定位在第一周向排中的多个井底切割元件,其中至少一个切割元件包括从基部延伸到距离基部最远的点的切割部分,限定延伸高度。 切割元件的截面积等于延伸高度的94%与切割元件基底的横截面面积的比率大于0.2。 此外,延伸高度与基础直径的比率不大于0.75。

    Gage configurations for drill bits
    3.
    发明申请
    Gage configurations for drill bits 审中-公开
    钻头的量规配置

    公开(公告)号:US20080060852A1

    公开(公告)日:2008-03-13

    申请号:US11517179

    申请日:2006-09-07

    IPC分类号: E21B10/16

    CPC分类号: E21B10/16

    摘要: A drill bit includes a plurality of cutting elements are positioned on the at least two roller cones, wherein cutting elements contributing to an operative gage row of the drill bit comprise less than 31 percent of a total cutting elements of the drill bit that contact the bottom of the borehole. A method to design a roller cone drill bit includes designing an initial bit, testing the initial bit; and adjusting the bit design to optimize at least one of rate of penetration and wear resistance, wherein cutting elements contributing to an operative gage row of the adjusted bit design comprise less than 31 percent of a total of cutting elements on the adjusted bit design that contact a bottom of a borehole.

    摘要翻译: 钻头包括多个切割元件,其定位在所述至少两个滚子锥体上,其中对钻头的操作计量行进行贡献的切割元件包括少于钻头的总切割元件的31% 的钻孔。 设计辊锥钻头的方法包括设计初始位,测试初始位; 并且调整钻头设计以优化穿透速率和耐磨性中的至少一个,其中对调节钻头设计的操作量具行有贡献的切削元件包括小于调节钻头设计中的总共切削元件的31% 钻孔的底部。

    Drill Bit and Cutting Inserts For Hard/Abrasive Formations
    4.
    发明申请
    Drill Bit and Cutting Inserts For Hard/Abrasive Formations 有权
    钻头和切削刀片用于硬/磨料组

    公开(公告)号:US20060260846A1

    公开(公告)日:2006-11-23

    申请号:US11383584

    申请日:2006-05-16

    IPC分类号: E21B10/36

    CPC分类号: E21B10/16 E21B10/52

    摘要: A rolling cone drill bit comprises a plurality of bottomhole cutter elements positioned in a first circumferential row, wherein at least one of the cutter elements comprises a cutting portion extending from a base portion to a point furthermost from the base portion, defining an extension height. The ratio of the cross-sectional area of the cutter element at a point equal to ninety-four percent of the extension height to the cross-sectional area of the cutter element base is greater than 0.2. Moreover, the ratio of the extension height to the base diameter is not greater than 0.75.

    摘要翻译: 滚动锥钻头包括定位在第一周向排中的多个井底切割元件,其中至少一个切割元件包括从基部延伸到距离基部最远的点的切割部分,限定延伸高度。 切割元件的截面积等于延伸高度的94%与切割元件基底的横截面面积的比率大于0.2。 此外,延伸高度与基础直径的比率不大于0.75。