公开(公告)号：US20090014217A1

公开(公告)日：2009-01-15

申请号：US12172364

申请日：2008-07-14

申请人： Anton F. Zahradnik ,  Terry J. Koltermann ,  Aaron J. Dick ,  Don Q. Nguyen ,  Eric C. Sullivan ,  Greg Ricks

发明人： Anton F. Zahradnik ,  Terry J. Koltermann ,  Aaron J. Dick ,  Don Q. Nguyen ,  Eric C. Sullivan ,  Greg Ricks

IPC分类号： E21B10/00

CPC分类号： E21B10/22 ,  F16C33/121 ,  F16C2352/00

摘要： A journal bearing element for use in forming a roller cone bit coupled to a bearing shaft to prevent circumferential sliding. Also included are material compositions of the journal bearing element. A journal bearing element is fixed in place relative to a head section and comprised of dense high purity powdered metal alloys with uniform micro-structure. A preferred material is comprised of a metal made of a carbon content of about 2.3% by weight, chromium of about 14% by weight, vanadium of about 9% by weight, and molybdenum at about 1% by weight.

摘要翻译： 一种轴颈轴承元件，用于形成与轴承轴联接以防止周向滑动的辊锥头。 还包括轴颈轴承元件的材料组成。 轴颈轴承元件相对于头部部分固定在适当位置，并且由具有均匀微观结构的致密高纯度粉末金属合金组成。 优选的材料由碳含量为约2.3重量％，约14重量％的铬，约9重量％的钒和约1重量％的钼制成的金属组成。

公开(公告)号：US08002053B2

公开(公告)日：2011-08-23

申请号：US12191442

申请日：2008-08-14

申请人： Greg Ricks ,  Leroy William Ledgerwood, III

发明人： Greg Ricks ,  Leroy William Ledgerwood, III

IPC分类号： E21B10/16

CPC分类号： E21B10/16

摘要： Embodiments of a system, method, and apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.

摘要翻译： 公开了一种用于通过调整紧凑间距来预测和减少通过滚子锥头的跟踪的系统，方法和装置的实施例。 相邻紧凑件或齿之间的不同间距提供了一个基本上不太可能跟踪的锥形排。 锥体上的给定行可以包括在连续组中以大约一半的连续组排列的压块。 剩余的大约一半的行包括交替的间距。 这种配置使得能够在现有技术的反跟踪间距方案中看不到非常宽的空间和随之而来的断裂和磨损的抗跟踪行为。

公开(公告)号：US20090044985A1

公开(公告)日：2009-02-19

申请号：US12191442

申请日：2008-08-14

申请人： Greg Ricks ,  Leroy William Ledgerwood, III

发明人： Greg Ricks ,  Leroy William Ledgerwood, III

IPC分类号： E21B10/08

CPC分类号： E21B10/16

摘要： Embodiments of a system, method, and apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.

摘要翻译： 公开了一种用于通过调整紧凑间距来预测和减少通过滚子锥头的跟踪的系统，方法和装置的实施例。 相邻紧凑件或齿之间的不同间距提供了一个基本上不太可能跟踪的锥形排。 锥体上的给定行可以包括在连续组中以大约一半的连续组排列的压块。 剩余的大约一半的行包括交替的间距。 这种配置使得能够在现有技术的反跟踪间距方案中看不到非常宽的空间和随之而来的断裂和磨损的抗跟踪行为。