公开(公告)号：US20090166091A1

公开(公告)日：2009-07-02

申请号：US12167350

申请日：2008-07-03

申请人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

发明人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

IPC分类号： G06F17/50 ,  E21B10/00 ,  E21B3/02

CPC分类号： E21B10/08 ,  E21B10/16

摘要： A design process and resulting bit structure is provided for drill bits wherein cutter geometries on the face of the bit are tailored to optimize the distribution of one or more of forces, torque, work, or power of each cutter relative to other cutters. Balanced are the forces, torque, work, or power generated by each cutter in respect to other cutters that are working within the same region of cut, so that all cutters within the same region of cut are generating sufficiently comparable forces, torque, work, or power. In this manner all of the cutters on the bit may share as closely as possible the work and loads required to penetrate the subterranean rock. The design process produces a bit structure in which each cutter is doing similar levels of work or creating similar levels of force, torque, or power relative to other cutters within the same region of cut on the bit, within specified ranges of design criteria.

摘要翻译： 为钻头提供了设计过程和结果钻头结构，其中定位钻头表面上的切割器几何形状以优化每个切割器相对于其他切割器的力，力矩，功率或功率的分布。 平衡是由每个切割器相对于在相同切割区域内工作的其他切割器产生的力，扭矩，作业或动力，使得相同切割区域内的所有切割器产生足够可比的力，扭矩， 或电源。 以这种方式，钻头上的所有刀具可以尽可能接近渗透地下岩石所需的工作和载荷。 设计过程产生一个位结构，其中每个切割器在设计标准的特定范围内，在相同的切割区域内，相对于其他切割器在相同的工作水平或者产生类似的力，扭矩或功率水平。

公开(公告)号：US5099929A

公开(公告)日：1992-03-31

申请号：US520035

申请日：1990-05-04

申请人： Carl W. Keith ,  William W. King ,  Robert I. Clayton

发明人： Carl W. Keith ,  William W. King ,  Robert I. Clayton

IPC分类号： E21B7/06 ,  E21B10/00 ,  E21B10/42 ,  E21B10/43 ,  E21B17/10

CPC分类号： E21B10/43 ,  E21B10/00 ,  E21B17/1092 ,  E21B7/064

摘要： A rotary drill bit for cutting an earth formation is provided. The drill bit includes a bit body rotatable about its longitudinal axis. A cutting face is provided on the bit body, with a concave central region and a raised outer periphery terminating at bit shoulder. The bit shoulder is concentric with and substantially parallel to the longitudinal axis of the rotary drill bit. A plurality of bit stabilizing pads are circumferentially disposed about the bit's shoulder. A plurality of stationary cutter elements are fixedly mounted to the cutting face in a selected pattern to provide a region of high cutter density on one side of the cutting face, and a region of low cutter density on the other side of the cutting face. The drill bit cuts earth formations as the bit body is rotated about its central axis. The stationary cutter elements operate to cut into the lower side wall of the wellbore as the bit body is rotated, causing the rotary drill bit to walk to the right.

摘要翻译： 提供用于切割地层的旋转钻头。 钻头包括可围绕其纵向轴线旋转的钻头体。 切割面设置在钻头体上，凹面的中心区域和凸起的外周边终止于钻头的肩部。 钻头台肩与旋转钻头的纵向轴线同心且基本平行。 围绕钻头的肩部周向地布置有多个钻头稳定垫。 多个固定切割元件以选定的图案固定地安装到切割面上，以在切割面的一侧提供高切割深度的区域，并且在切割面的另一侧提供低切割器密度的区域。 当钻头体围绕其中心轴线旋转时，钻头切割地层。 当钻头体旋转时，固定切割元件可操作以切入井筒的下侧壁，从而使旋转钻头向右走。

公开(公告)号：US08437995B2

公开(公告)日：2013-05-07

申请号：US12167350

申请日：2008-07-03

申请人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

发明人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

IPC分类号： G06G7/48

CPC分类号： E21B10/08 ,  E21B10/16

摘要： A design process and resulting bit structure is provided for drill bits wherein cutter geometries on the face of the bit are tailored to optimize the distribution of one or more of forces, torque, work, or power of each cutter relative to other cutters. Balanced are the forces, torque, work, or power generated by each cutter in respect to other cutters that are working within the same region of cut, so that all cutters within the same region of cut are generating sufficiently comparable forces, torque, work, or power. In this manner all of the cutters on the bit may share as closely as possible the work and loads required to penetrate the subterranean rock. The design process produces a bit structure in which each cutter is doing similar levels of work or creating similar levels of force, torque, or power relative to other cutters within the same region of cut on the bit, within specified ranges of design criteria.

摘要翻译： 为钻头提供了设计过程和结果钻头结构，其中定位钻头表面上的切割器几何形状以优化每个切割器相对于其他切割器的力，力矩，功率或功率的分布。 平衡是由每个切割器相对于在相同切割区域内工作的其他切割器产生的力，扭矩，作业或动力，使得相同切割区域内的所有切割器产生足够可比的力，扭矩， 或电源。 以这种方式，钻头上的所有刀具可以尽可能接近渗透地下岩石所需的工作和载荷。 设计过程产生一个位结构，其中每个切割器在设计标准的特定范围内，在相同的切割区域内，相对于其他切割器在相同的工作水平或者产生类似的力，扭矩或功率水平。

公开(公告)号：US5238075A

公开(公告)日：1993-08-24

申请号：US901322

申请日：1992-06-19

申请人： Carl W. Keith ,  Robert I. Clayton

发明人： Carl W. Keith ,  Robert I. Clayton

IPC分类号： E21B10/42 ,  E21B10/43 ,  E21B10/54 ,  E21B10/55

CPC分类号： E21B10/43 ,  E21B10/55

摘要： A fixed cutter drill bit includes a plurality of angularly spaced radial wings each with a row of cutting elements mounted thereon and protruding from the bit for drilling through formation material. On a first of the wings, a first row of the cutting elements has alternately larger and smaller area cutting faces at spaced selected radial positions relative to the center of the bit. Similarly, a second row of cutting elements is mounted on a second of the wings at substantially the same radial positions but with the radial positions of the larger and smaller cutting faces reversed over those on the first wing. A third wing includes a third row of cutting elements with cutting faces of intermediate area located at each of the selected radial positions. The combination of different sizes of cutting elements at each radial position defines a set having a profile with the intermediate and smaller cutting elements located entirely within the larger cutting element. The profiles of the larger cutting elements of adjacent sets overlap each other without substantial overlapping of the profiles of any of the other cutting elements.

公开(公告)号：US20110259649A1

公开(公告)日：2011-10-27

申请号：US13178429

申请日：2011-07-07

申请人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

发明人： Oliver Matthews ,  Robert I. Clayton ,  Shilin Chen

IPC分类号： E21B10/36 ,  G06F17/50

CPC分类号： E21B10/08 ,  E21B10/16

摘要： A design process and resulting bit structure is provided for drill bits wherein cutter geometries on the face of the bit are tailored to optimize the distribution of one or more of forces, torque, work, or power of each cutter relative to other cutters. Balanced are the forces, torque, work, or power generated by each cutter in respect to other cutters that are working within the same region of cut, so that all cutters within the same region of cut are generating sufficiently comparable forces, torque, work, or power. In this manner all of the cutters on the bit may share as closely as possible the work and loads required to penetrate the subterranean rock. The design process produces a bit structure in which each cutter is doing similar levels of work or creating similar levels of force, torque, or power relative to other cutters within the same region of cut on the bit, within specified ranges of design criteria.

摘要翻译： 为钻头提供了设计过程和结果钻头结构，其中定位钻头表面上的切割器几何形状以优化每个切割器相对于其他切割器的力，力矩，功率或功率的分布。 平衡是由每个切割器相对于在相同切割区域内工作的其他切割器产生的力，扭矩，作业或动力，使得相同切割区域内的所有切割器产生足够可比的力，扭矩， 或电源。 以这种方式，钻头上的所有刀具可以尽可能接近渗透地下岩石所需的工作和载荷。 设计过程产生一个位结构，其中每个切割器在设计标准的特定范围内，在相同的切割区域内，相对于其他切割器在相同的工作水平或者产生类似的力，扭矩或功率水平。