High chrome/nickel milling with PDC cutters
    11.
    发明申请
    High chrome/nickel milling with PDC cutters 审中-公开
    高铬/镍铣削与PDC刀具

    公开(公告)号:US20060090897A1

    公开(公告)日:2006-05-04

    申请号:US11212035

    申请日:2005-08-23

    IPC分类号: E21B29/00

    CPC分类号: E21B10/567 E21B29/00

    摘要: A method of downhole milling of an item having high chrome/high nickel content, using polycrystalline diamond cutting elements, exhibiting less wear, requiring less torque and weight, and producing less heat, than prior art tungsten carbide elements.

    摘要翻译: 与现有技术的碳化钨元件相比,使用多晶金刚石切割元件,具有较高的铬/高镍含量的物品的井下研磨,具有较少的磨损,需要更少的扭矩和重量以及产生较少的热量的方法。

    Single mill casing window cutting tool
    12.
    发明申请
    Single mill casing window cutting tool 有权
    单磨套管窗切割工具

    公开(公告)号:US20050150656A1

    公开(公告)日:2005-07-14

    申请号:US11016540

    申请日:2004-12-16

    申请人: Calvin Stowe

    发明人: Calvin Stowe

    摘要: An apparatus for cutting a window in a casing pipe in a well, having only a single mill with full gage primary cutting inserts of a very hard, highly wear resistant, material. The primary inserts can be protected from damage by forming each blade on the mill with an outside edge profile having a shallower angle than the angle of the whipstock which is used to guide the mill through the casing, preventing the primary inserts from riding directly on the whipstock. The primary inserts on each blade can be further protected from damage by a row of secondary inserts of a relatively more durable material, arranged behind each row of primary inserts, or by a full diameter buffer section of mill body or blade.

    摘要翻译: 一种用于在井中的套管中切割窗户的装置,其仅具有仅具有非常硬,高度耐磨的材料的全量具初级切削刀片的单个磨机。 可以通过在磨机上形成每个刀片具有比用于引导磨机穿过套管的造斜器角度更浅的角度的外角边缘轮廓来防止主要刀片受到损坏,从而防止主刀片直接骑在 造斜器 可以进一步防止每个刀片上的主要插入物被排列在每排主要插入件后面的相对更耐用的材料的一排辅助插入件或磨机主体或刀片的全直径缓冲部分所损坏。