专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP0972908A3 A method of determining characteristics of a rotary drag-type drill bit 有权
标题翻译：一种用于确定Fräsbohrmeissels的特性的方法
公开(公告)号：EP0972908A3
公开(公告)日：2000-12-13
申请号：EP99305258.8
申请日：1999-07-02
申请人： Camco International (UK) Limited
发明人： Jelley, David John , Wilcox, Nigel Shaun
IPC分类号： E21B10/46 , E21B10/42
CPC分类号： E21B10/43 , Y10S706/929
摘要： A method is disclosed for determining the characteristics of a rotary drag-type drill bit. The method comprises the steps of creating a model or representation of the shapes of the cutter (12) and their positions relative to an axis of the bit, projecting the shape of one of the cutters (20) onto a fixed plane (21), overlaying the plane (21) with an array (24) of cells and assigning a first marker to those cells which overlie the projection (23). The model is then rotated, conveniently in the reverse direction, and moved axially. As each of the cutters (12) move through the plane (21), their shapes are projected onto the plane (21), and those cells which overlie both the projection of the selected cutter (20) and the projections of one or more of the the other cutters (12) are assigned a second marker. One or more parameters are derived using the markers applied to the cells of the array (24).

2. 发明公开

EP0972908A2 A method of determining characteristics of a rotary drag-type drill bit 有权
标题翻译：一种确定旋转拖式钻头特征的方法
公开(公告)号：EP0972908A2
公开(公告)日：2000-01-19
申请号：EP99305258.8
申请日：1999-07-02
申请人： Camco International (UK) Limited
发明人： Jelley, David John , Wilcox, Nigel Shaun
IPC分类号： E21B10/00
CPC分类号： E21B10/43 , Y10S706/929
摘要： A method is disclosed for determining the characteristics of a rotary drag-type drill bit. The method comprises the steps of creating a model or representation of the shapes of the cutter (12) and their positions relative to an axis of the bit, projecting the shape of one of the cutters (20) onto a fixed plane (21), overlaying the plane (21) with an array (24) of cells and assigning a first marker to those cells which overlie the projection (23). The model is then rotated, conveniently in the reverse direction, and moved axially. As each of the cutters (12) move through the plane (21), their shapes are projected onto the plane (21), and those cells which overlie both the projection of the selected cutter (20) and the projections of one or more of the the other cutters (12) are assigned a second marker. One or more parameters are derived using the markers applied to the cells of the array (24).
摘要翻译：公开了一种用于确定旋转拖式钻头的特征的方法。该方法包括以下步骤：创建刀具（12）的形状的模型或表示及其相对于钻头的轴线的位置，将刀具（20）中的一个的形状投影到固定平面（21）上，将平面（21）与单元阵列（24）重叠，并将第一标记分配给覆盖突起（23）的那些单元。然后旋转模型，方便地沿相反方向旋转，并沿轴向移动。当每个刀具（12）穿过平面（21）时，它们的形状被投影到平面（21）上，并且这些单元覆盖选定刀具（20）的投影和一个或多个其他刀具（12）被分配第二标记。使用应用于阵列（24）的单元的标记导出一个或多个参数。

3. 发明授权

EP0972908B1 A method of determining characteristics of a rotary drag-type drill bit 有权
标题翻译：一种用于确定Fräsbohrmeissels的特性的方法
公开(公告)号：EP0972908B1
公开(公告)日：2005-01-12
申请号：EP99305258.8
申请日：1999-07-02
申请人： Camco International (UK) Limited
发明人： Jelley, David John , Wilcox, Nigel Shaun
IPC分类号： E21B10/46 , E21B10/42
CPC分类号： E21B10/43 , Y10S706/929

4. 发明授权

EP1008718B1 Rotary drag-type drill bits and methods of designing such bits 有权
标题翻译：旋钻铣工具和开发方法
公开(公告)号：EP1008718B1
公开(公告)日：2004-09-15
申请号：EP99309759.1
申请日：1999-12-03
申请人： Camco International (UK) Limited
发明人： Taylor, Malcolm Roy , Murdock, Andrew , Jelley, David John
IPC分类号： E21B10/46 , E21B10/56 , E21B10/60
CPC分类号： E21B10/42

5. 发明公开

EP1008718A3 Rotary drag-type drill bits and methods of designing such bits 有权
标题翻译：旋钻铣工具和开发方法
公开(公告)号：EP1008718A3
公开(公告)日：2001-04-11
申请号：EP99309759.1
申请日：1999-12-03
申请人： Camco International (UK) Limited
发明人： Taylor, Malcolm Roy , Murdock, Andrew , Jelley, David John
IPC分类号： E21B10/46 , E21B10/56 , E21B10/60
CPC分类号： E21B10/42
摘要： The invention provides a rotary drag-type drill bit in which the relationship of torque to rotary bit speed is such that torque generally increases with bit speed. Such a bit has a reduced tendency to exhibit the phenomenon known as "stick-slip" while drilling, when compared with bits having a different torque /speed characteristic, as a result of the positive damping effect of the torque/speed relationship. One method of designing such a drill bit comprises ascertaining the torque/rotary bit speed relationship, or other correlated relationships, for a number of different drill bit designs and then selecting from those designs a design having the desired type of relationship. Examples of drill bit structures specifically designed to achieve the desired torque/speed relationship are also disclosed.

6. 发明公开

EP1008718A2 Rotary drag-type drill bits and methods of designing such bits 有权
标题翻译： Drehbohr-Fräsmeisselund Verfahren zu deren Entwicklung
公开(公告)号：EP1008718A2
公开(公告)日：2000-06-14
申请号：EP99309759.1
申请日：1999-12-03
申请人： Camco International (UK) Limited
发明人： Taylor, Malcolm Roy , Murdock, Andrew , Jelley, David John
IPC分类号： E21B10/46 , E21B10/56 , E21B10/60
CPC分类号： E21B10/42
摘要： The invention provides a rotary drag-type drill bit in which the relationship of torque to rotary bit speed is such that torque generally increases with bit speed. Such a bit has a reduced tendency to exhibit the phenomenon known as "stick-slip" while drilling, when compared with bits having a different torque /speed characteristic, as a result of the positive damping effect of the torque/speed relationship. One method of designing such a drill bit comprises ascertaining the torque/rotary bit speed relationship, or other correlated relationships, for a number of different drill bit designs and then selecting from those designs a design having the desired type of relationship. Examples of drill bit structures specifically designed to achieve the desired torque/speed relationship are also disclosed.
摘要翻译：本发明提供了一种旋转阻力式钻头，其中扭矩与旋转钻头速度的关系使得扭矩通常随钻头速度而增加。作为扭矩/速度关系的正阻尼效应的结果，与钻头时相比，具有不同扭矩/速度特性的钻头，这种位置具有降低的倾向。设计这种钻头的一种方法包括确定许多不同钻头设计的扭矩/旋转钻头速度关系或其他相关关系，然后从这些设计中选择具有所需类型关系的设计。还公开了专门设计用于实现期望的扭矩/速度关系的钻头结构的实例。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式