Rock drilling tool
    1.
    发明申请
    Rock drilling tool 审中-公开
    岩石钻具

    公开(公告)号:US20090065224A1

    公开(公告)日:2009-03-12

    申请号:US11919793

    申请日:2006-05-03

    申请人: Roger Noel

    发明人: Roger Noel

    IPC分类号: E21B7/00 E21B17/10

    CPC分类号: E21B17/00 E21B1/00

    摘要: The present invention relates to a rock drilling element for percussive drilling that is designed to reduce the stress usually developed on a thread joint when the shock wave transmits from a slender portion to a thicker part. The rock drilling element has an elongated body comprising a first portion and a second portion. The first portion has a female or male thread intended to be connected to a drill rod or a drill tube. The first portion has an outer diameter approximately equal to the major diameter of said thread. The second portion has a male or female thread intended to be connected to a drill bit or a guide tube. The second portion forms a guide portion for radial guiding in a hole being drilled. The length of the first portion is at least 500 mm, such that the thread joint is moved away from an unfavorable reflection area. Furthermore, the present invention relates to a drill string and a method of transferring impact energy in a drill string.

    摘要翻译: 本发明涉及一种用于冲击钻探的岩石钻孔元件,其被设计成当冲击波从细长部分向较厚部分传递时,减少通常在螺纹接头上产生的应力。 岩石钻井元件具有包括第一部分和第二部分的细长主体。 第一部分具有用于连接到钻杆或钻杆的阴螺纹或外螺纹。 第一部分具有大致等于所述螺纹的主直径的外径。 第二部分具有用于连接到钻头或引导管的阳螺纹或阴螺纹。 第二部分形成用于在被钻孔中径向引导的引导部分。 第一部分的长度为至少500mm,使得螺纹接头远离不利的反射区域移动。 此外,本发明涉及一种钻柱和在钻柱中传递冲击能的方法。