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公开(公告)号:US20050109543A1
公开(公告)日:2005-05-26
申请号:US10871605
申请日:2004-06-18
申请人: George Witman , Peter Wilson , Richard Butland , Dan Belnap , John Herman , Ronald Birne-Browne , Per Nese , Louis Loiselle
发明人: George Witman , Peter Wilson , Richard Butland , Dan Belnap , John Herman , Ronald Birne-Browne , Per Nese , Louis Loiselle
CPC分类号: E21B17/1092 , E21B10/16
摘要: A cutting element arrangement for a single roller cone bit includes both at least one substantially non-planar cutting element and at least one substantially planar cutting element. The substantially non-planar cutting element is disposed on an inner row of the single roller cone and the substantially planar cutting element is disposed on an outer row of the single roller cone. With such an arrangement, the substantially non-planar inner row cutting elements effectively penetrate formations while the substantially planar outer row cutting elements maintain bore hole gage.
摘要翻译: 用于单个辊锥头的切割元件布置包括至少一个基本上非平面的切割元件和至少一个基本上平面的切割元件。 基本上非平面的切割元件设置在单个辊锥体的内排上,并且基本上平面的切割元件设置在单个辊锥体的外排上。 通过这样的布置,基本上非平面的内排切割元件有效地穿透地层,而基本上平面的外排切割元件保持钻孔规。
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公开(公告)号:US07152701B2
公开(公告)日:2006-12-26
申请号:US10920718
申请日:2004-08-17
申请人: Richard Butland , John J. Herman , Ronald Birne-Browne , Per Nese , Louis Loiselle , J. Daniel Belnap
发明人: Richard Butland , John J. Herman , Ronald Birne-Browne , Per Nese , Louis Loiselle , J. Daniel Belnap
IPC分类号: E21B10/08
CPC分类号: E21B10/5676 , E21B10/006 , E21B10/16 , E21B10/52
摘要: A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where at least one of the plurality of cutting elements is formed of an inner region that is at least partially surrounded by an outer region, where the inner region is more abrasive resistant than the outer region. Such an arrangement in a single roller cone bit allows the at least one cutting element to be “self-sharpening.”
摘要翻译: 滚子锥形钻头包括适于联接到钻柱的钻头体,从钻头体悬垂的轴承轴颈和可旋转地附接到轴承轴颈的单个滚子圆锥体。 单个辊筒具有多个切割元件,其中多个切割元件中的至少一个切割元件由至少部分地被外部区域包围的内部区域形成,其中内部区域比外部区域更具有耐磨性 。 在单个辊锥头中的这种布置允许至少一个切割元件“自锐化”。
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