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1. 发明申请

US20110079438A1 DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING, METHODS OF MANUFACTURING SUCH DRILL BITS AND TOOLS AND METHODS OF DIRECTIONAL AND OFF CENTER DRILLING 有权
标题翻译：钻井钻机和钻井工具，制造这种钻头和工具的方法以及方向和离心钻孔的方法
公开(公告)号：US20110079438A1
公开(公告)日：2011-04-07
申请号：US12898451
申请日：2010-10-05
申请人： Thorsten Schwefe , Cara D. Weinheimer
发明人： Thorsten Schwefe , Cara D. Weinheimer
IPC分类号： E21B7/04 , E21B10/36
CPC分类号： E21B10/62 , E21B7/04 , E21B10/42 , E21B10/43 , E21B10/54
摘要： A drill bit may include a bit body including at least one blade extending at least partially over a cone region of the bit body. Additionally, the drill bit may include a plurality of cutting structures mounted to the at least one blade and a rubbing zone within the cone region of the at least one blade, wherein cutting structures within the rubbing zone have a reduced average exposure. Additionally, a method of directional drilling may include positioning a depth-of-cut controlling feature of a drill bit away from a formation to prevent substantial contact between the depth-of-cut controlling feature and rotating the drill bit off-center to form a substantially straight borehole segment. The method may also include positioning the depth-of-cut controlling feature of the drill bit into contact with the formation to control the depth-of-cut and rotating the drill bit on-center to form a substantially nonlinear borehole segment.
摘要翻译：钻头可以包括钻头体，其包括至少部分地在钻头体的锥形区域上延伸的至少一个刀片。此外，钻头可以包括安装到至少一个叶片上的多个切割结构和在至少一个叶片的锥形区域内的摩擦区域，其中摩擦区域内的切割结构具有降低的平均曝光。另外，定向钻孔的方法可以包括将钻头的切削深度控制特征定位远离地层以防止切削深度控制特征之间的实质接触并且使钻头偏离中心以形成基本上直的井眼段。该方法还可以包括将钻头的深度切割控制特征定位成与地层接触以控制切削深度并使钻头在中心旋转以形成基本非线性的钻孔段。

2. 发明授权

US09309723B2 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of directional and off center drilling 有权
标题翻译：用于地下钻孔的钻头和工具，制造这种钻头和工具的方法以及定向和偏心钻削的方法
公开(公告)号：US09309723B2
公开(公告)日：2016-04-12
申请号：US12898451
申请日：2010-10-05
申请人： Thorsten Schwefe , Cara D. Weinheimer
发明人： Thorsten Schwefe , Cara D. Weinheimer
IPC分类号： E21B10/43 , E21B10/42
CPC分类号： E21B10/62 , E21B7/04 , E21B10/42 , E21B10/43 , E21B10/54
摘要： A drill bit may include a bit body including at least one blade extending at least partially over a cone region of the bit body. Additionally, the drill bit may include a plurality of cutting structures mounted to the at least one blade and a rubbing zone within the cone region of the at least one blade, wherein cutting structures within the rubbing zone have a reduced average exposure. Additionally, a method of directional drilling may include positioning a depth-of-cut controlling feature of a drill bit away from a formation to prevent substantial contact between the depth-of-cut controlling feature and rotating the drill bit off-center to form a substantially straight borehole segment. The method may also include positioning the depth-of-cut controlling feature of the drill bit into contact with the formation to control the depth-of-cut and rotating the drill bit on-center to form a substantially nonlinear borehole segment.
摘要翻译：钻头可以包括钻头体，其包括至少部分地在钻头体的锥形区域上延伸的至少一个刀片。此外，钻头可以包括安装到至少一个叶片上的多个切割结构和在至少一个叶片的锥形区域内的摩擦区域，其中摩擦区域内的切割结构具有降低的平均曝光。另外，定向钻孔的方法可以包括将钻头的切削深度控制特征定位远离地层以防止切削深度控制特征之间的实质接触并且使钻头偏离中心以形成基本上直的井眼段。该方法还可以包括将钻头的深度切割控制特征定位成与地层接触以控制切削深度并使钻头在中心旋转以形成基本非线性的钻孔段。

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