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公开(公告)号：US20100012386A1
公开(公告)日：2010-01-21
申请号：US12567477
申请日：2009-09-25
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US20100012385A1
公开(公告)日：2010-01-21
申请号：US12564779
申请日：2009-09-22
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US20080142262A1
公开(公告)日：2008-06-19
申请号：US11610680
申请日：2006-12-14
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit. And with an extended crown height, the drill bit can last longer and require less tripping in and out of the borehole to replace the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。 并且具有延长的冠高度，钻头可以持续更长时间，并且需要更少的钻孔和出口的钻孔以更换钻头。
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公开(公告)号：US07918288B2
公开(公告)日：2011-04-05
申请号：US12564779
申请日：2009-09-22
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US07909119B2
公开(公告)日：2011-03-22
申请号：US12568204
申请日：2009-09-28
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US07874384B2
公开(公告)日：2011-01-25
申请号：US12568231
申请日：2009-09-28
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US07828090B2
公开(公告)日：2010-11-09
申请号：US12564540
申请日：2009-09-22
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US20100012382A1
公开(公告)日：2010-01-21
申请号：US12568231
申请日：2009-09-28
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US20100012381A1
公开(公告)日：2010-01-21
申请号：US12568204
申请日：2009-09-28
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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公开(公告)号：US07628228B2
公开(公告)日：2009-12-08
申请号：US11610680
申请日：2006-12-14
CPC分类号： E21B10/02
摘要： Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
摘要翻译： 这里描述了具有长冠高度的钻头。 核心钻头具有一系列不位于表冠尖端处的狭槽或开口，因此封闭在表冠的主体中。 槽可以在整个表冠处交错和/或阶梯。 当钻头的切割部分通过正常使用而侵蚀时，钻头尖端处的流体/碎屑缺口被消除。 随着侵蚀的进行，槽变得暴露，然后它们作为流体/碎屑的方式起作用。 该构造允许冠部高度被延伸和延长，而基本上不会降低钻头的结构完整性。
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