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1. 发明授权

US4073354A Earth-boring drill bits 失效
标题翻译：钻地钻头
公开(公告)号：US4073354A
公开(公告)日：1978-02-14
申请号：US745087
申请日：1976-11-26
申请人： David S. Rowley , Bruce H. Walker , Coy M. Fielder , Heino J. Rohde
发明人： David S. Rowley , Bruce H. Walker , Coy M. Fielder , Heino J. Rohde
IPC分类号： E21B10/26 , E21B10/56 , E21B10/567 , E21B9/36
CPC分类号： E21B10/567 , E21B10/26
摘要： The invention relates to the design of earth boring bits employing shaped preform cutters containing hard abrasive materials such as diamonds.
摘要翻译：本发明涉及使用含有诸如金刚石等硬磨料的成形预制刀具的钻孔钻头的设计。

2. 发明授权

US4244432A Earth-boring drill bits 失效
标题翻译：钻地钻头
公开(公告)号：US4244432A
公开(公告)日：1981-01-13
申请号：US913571
申请日：1978-06-08
申请人： David S. Rowley , Bruce H. Walker , Coy M. Fielder
发明人： David S. Rowley , Bruce H. Walker , Coy M. Fielder
IPC分类号： E21B10/56 , E21B10/573 , E21B9/36 , E21C13/01
CPC分类号： E21B10/573
摘要： The invention relates to the design of earth bore-hole drill bits employing shaped preform cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in a hard metal bit matrix.
摘要翻译：本发明涉及使用含有硬研磨材料（例如金刚石）的成形预成型切割机的钻孔钻头的设计，切割器安装在硬质金属钻头矩阵中的预制插座中。

3. 发明授权

US6068072A Cutting element 失效
标题翻译：切割元件
公开(公告)号：US6068072A
公开(公告)日：2000-05-30
申请号：US21012
申请日：1998-02-09
申请人： Alain Besson , Gary Michael Thigpen , Coy M. Fielder
发明人： Alain Besson , Gary Michael Thigpen , Coy M. Fielder
IPC分类号： E21B10/56 , E21B10/573 , E21B10/46
CPC分类号： E21B10/573
摘要： A novel cutting element is disclosed as comprised of at an attachment body and a cutting face, where said attachment body is attached to said cutting face via a high temperature braze joint, the attachment body defining a projection and a grooved area, where said grooved area is disposed between the projection and the cutting face, the resultant cutting element providing both enhanced wear characteristics and stability.
摘要翻译：公开了一种新颖的切割元件，其包括在附接体和切割面处，其中所述附接体通过高温钎焊接头附接到所述切割面，所述附接体限定突起和凹槽区域，其中所述开槽面积设置在突起和切割面之间，所得切割元件提供增强的磨损特性和稳定性。

4. 发明授权

US6026919A Cutting element with stress reduction 失效
标题翻译：切削元件减少应力
公开(公告)号：US6026919A
公开(公告)日：2000-02-22
申请号：US129179
申请日：1998-04-16
申请人： Gary Michael Thigpen , Coy M. Fielder , Brad Weston
发明人： Gary Michael Thigpen , Coy M. Fielder , Brad Weston
IPC分类号： E21B10/56 , E21B10/573 , E21B10/12
CPC分类号： E21B10/5735
摘要： An improved disc-shaped cutting element including first and second major flat surfaces and a cutting edge, said element comprised of a hard metal substrate defining an irregular interface bonded to a polycrystalline diamond, where said interface includes a plurality of concentric and redial grooves adapted to receive corresponding protrusions formed on the diamond layer so as to enhance wear like and impact resistance.
摘要翻译：一种改进的盘形切割元件，包括第一和第二主平坦表面和切割边缘，所述元件由限定与多晶金刚石结合的不规则界面的硬金属基底组成，其中所述界面包括多个同心和重拨槽，接收形成在金刚石层上的相应突起，以增强耐磨性和耐冲击性。

5. 发明授权

US5558170A Method and apparatus for improving drill bit stability 失效
标题翻译：提高钻头稳定性的方法和装置
公开(公告)号：US5558170A
公开(公告)日：1996-09-24
申请号：US350362
申请日：1994-12-06
申请人： Gary M. Thigpen , William H. Sherwood, Jr. , Coy M. Fielder
发明人： Gary M. Thigpen , William H. Sherwood, Jr. , Coy M. Fielder
IPC分类号： E21B10/56 , E21B10/567 , E21B10/573 , E21B17/10 , E21B10/46
CPC分类号： E21B10/567 , E21B10/573 , E21B17/1092 , E21B2010/566
摘要： A drag bit having a plurality of blades or ribs on its end face has one or more pockets milled into the top surfaces of said blades. A tungsten carbide button or insert is positioned at the gauge diameter to reduce impact on the gauge diameter cutter in each of the fibs. The tungsten carbide button extends to the borehole gauge diameter to stabilize the bit within the borehole to limit bit whirling. The tungsten carbide button extends just forward of at least the final cutter assembly with respect to the direction of bit rotation to take the impact instead of the cutters. An additional tungsten carbide button or a shaped cutter is used along the blades in line with PDC cutting assemblies for limiting the penetration of the PDC cutting assemblies to thereby limit bit whirling or tilting instabilities. A shaped PDC cutter has a beveled edge with a bevel angle greater than the backrake angle of the PDC cutter so that engagement with the borehole wall is made with the tungsten carbide body rather than the PDC cutting portion to thereby function as a penetration limiter. As the bit wears, the PDC cutting portion begins to engage the formation in the same manner as the other PDC cutting assemblies.
摘要翻译：具有在其端面上的多个叶片或肋的拖曳钻头具有铣削到所述刀片的顶表面中的一个或多个凹坑。碳化钨按钮或插入件位于规格直径处，以减少每个纤维中的直径切割器的冲击。碳化钨按钮延伸到钻孔计直径以将钻头稳定在钻孔内以限制钻头旋转。相对于钻头旋转的方向，碳化钨按钮至少延伸到最终切割器组件的前方，以取代切割器。沿着刀片使用附加的碳化钨纽扣或成形刀具，与PDC切割组件一致，以限制PDC切割组件的穿透，从而限制钻头旋转或倾斜不稳定性。成形的PDC切割器具有斜切边缘，其斜角大于PDC切割器的反向角度，使得与钻孔壁的接合由碳化钨本体而不是PDC切割部分制成，从而用作渗透限制器。当钻头磨损时，PDC切割部分以与其它PDC切割组件相同的方式开始接合结构。

6. 发明授权

US06401845B1 Cutting element with stress reduction 有权
标题翻译：切削元件减少应力
公开(公告)号：US06401845B1
公开(公告)日：2002-06-11
申请号：US09583488
申请日：2000-05-31
申请人： Coy M. Fielder
发明人： Coy M. Fielder
IPC分类号： E21B1012
CPC分类号： E21B10/5735
摘要： The present invention is directed to an improved cutting element for use with rotating downhole tools. More specifically, the present invention is directed to a compact cutter which includes unique configurations for the interface regions between the substrate the abrasive element to promote superior impact resistance and adhesion.
摘要翻译：本发明涉及一种用于旋转井下工具的改进的切割元件。更具体地，本发明涉及一种紧凑型切割器，其包括用于基材之间的界面区域的独特构造，以提供优异的抗冲击性和粘附性。

7. 发明授权

US5979577A Stabilizing drill bit with improved cutting elements 有权
标题翻译：具有改进的切削元件的稳定钻头
公开(公告)号：US5979577A
公开(公告)日：1999-11-09
申请号：US149196
申请日：1998-09-08
申请人： Coy M. Fielder
发明人： Coy M. Fielder
IPC分类号： E21B10/42 , E21B10/43 , E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/573 , E21B17/10 , E21B10/16 , E21B10/46
CPC分类号： E21B10/43 , E21B10/55 , E21B10/5673 , E21B10/5735 , E21B17/1092
摘要： A drilling tool operational with a rotational drive source for drilling in a subterranean formation where said tool comprises a body defining a face disposed about a longitudinal axis, a plurality of cutting elements fixedly disposed on and projecting from said tool face and spaced apart from one another, and one or more stabilizing elements disposed on the tool face and defining a beveled surface.
摘要翻译：一种钻井工具，其与用于在地下地层中钻孔的旋转驱动源一起操作，其中所述工具包括限定围绕纵向轴线设置的面的主体，固定地设置在所述工具面上并从所述工具面突出并且彼此间隔开的多个切割元件以及设置在工具面上并限定斜面的一个或多个稳定元件。

8. 发明授权

US5803196A Stabilizing drill bit 失效
标题翻译：稳定钻头
公开(公告)号：US5803196A
公开(公告)日：1998-09-08
申请号：US655988
申请日：1996-05-31
申请人： Coy M. Fielder
发明人： Coy M. Fielder
IPC分类号： E21B10/42 , E21B10/43 , E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/573 , E21B17/10 , E21B10/46
CPC分类号： E21B10/43 , E21B10/55 , E21B10/5673 , E21B10/5735 , E21B17/1092
摘要： The present invention is directed to an improved, stabilized drill bit including a shank disposed about a longitudinal axis for receiving a rotational drive source, a gauge portion and a face portion which includes a number of symmetrically arranged blades which themselves include radially situated cutting elements disposed at an exaggerated cutting angle.
摘要翻译：本发明涉及一种改进的，稳定的钻头，其包括围绕纵向轴线设置的柄，用于接收旋转驱动源，计量部分和面部部分，其包括多个对称布置的叶片，其本身包括径向设置的切割元件设置以夸张的切割角度。

9. 发明授权

US4351401A Earth-boring drill bits 失效
标题翻译：钻地钻头
公开(公告)号：US4351401A
公开(公告)日：1982-09-28
申请号：US159181
申请日：1980-06-13
申请人： Coy M. Fielder
发明人： Coy M. Fielder
IPC分类号： E21B10/56 , E21B10/573 , E21B10/46
CPC分类号： E21B10/573
摘要： The invention relates to the design of earth bore-hole drill bits embodying shaped preformed cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in the hard metal bit matrix. The extent of penetration of the preformed cutters into the formation being drilled is controlled by providing surface set diamonds embedded in the matrix at or adjacent to its gage portion, the surface set diamonds projecting from the matrix to a much lesser extent than the preformed cutters. As a result, the surface set diamonds can penetrate into the formation only to the extent determined by engagement of the adjacent face of the matrix with the formation. Although the preformed cutters project from the matrix to a greater distance than the surface set diamonds, their extent of penetration into the formation is no greater than that of the surface set diamonds.
摘要翻译：本发明涉及包含硬质研磨材料（例如金刚石）的成形预成型切割机的地球钻孔钻头的设计，切割器安装在硬金属钻头矩阵中的预制插座中。将预成形的切割器穿入正在钻孔的地层中的程度通过提供嵌入基体中的表面镶嵌金刚石或其附近的表面镶嵌金属来控制，表面镶嵌金刚石从基体突出到远小于预成型切割器的程度。结果，表面镶嵌金刚石只能通过基体相邻面与地层的接合而渗透到地层中。虽然预制的切割机从矩阵突出到比表面镶嵌钻石更大的距离，但是它们进入地层的程度不大于表面镶嵌钻石的程度。

10. 发明授权

US06913098B2 Sub-reamer for bi-center type tools 有权
标题翻译：用于双中心型工具的分铰刀
公开(公告)号：US06913098B2
公开(公告)日：2005-07-05
申请号：US10301049
申请日：2002-11-21
申请人： Coy M. Fielder , Rogerio H. Silva
发明人： Coy M. Fielder , Rogerio H. Silva
IPC分类号： E21B10/26 , E21B10/42 , E21B10/43
CPC分类号： E21B10/43 , E21B10/26
摘要： An improved bi-center with improved directional stability and wear resistance is disclosed, said bit optimally utilizing a plurality of shaped PDC cutting elements selectively situated about the cutting surfaces of the pilot and the reamer to produce a minimal force imbalance, where further said pilot bit and the reamer are force balanced to further reduce imbalance in the operation of the tool.
摘要翻译：公开了一种具有改进的方向稳定性和耐磨性的改进的双中心，所述位优化地利用选择性地围绕导向器和铰刀的切割表面定位的多个成形PDC切割元件以产生最小的力不平衡，其中所述导向位并且铰刀是力平衡的，以进一步减少工具的操作不平衡。

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